Chess Middlegames [1 ed.] 3895086835, 9783895086830

Table of contents :
FRONT PAGE
Contents
1. Epaulet mate
2. Back rank
3. Double attack
4. Deflection
5. Decoy
6. Clearance
7. Discovered attack
8. Opening up the diagonal
9. Long diagonal
10. Opening up a line
11. Open line
12. Closing a line
13. Pin
14. Rook on the 7th or the 2nd rank
15. Sacrifice on h7
16. Sacrifice on h6
17. Sacrifice on g7
18. Sacrifice on g6
19. Sacrifice on f7
20. Sacrifice on f6
21. Attack against the kingside
22. Hunting the king
23. Annihilation of the defensive piece
24. King in the middle
25. March with the king
26. Opposite side castling
27. Counter attack
28. Defence
29. Attack with pawns
30. Pawn breakthrough
31. Pawn hunt
32. Advantage in development
33. Positional pawn sacrifice
34. Positional exchange sacrifice
35. Positional piece sacrifice
36. Positional queen sacrifice
37. Penetration
38. Activation of pieces
39. Intermediate move
40. Weakness of the isolated pawn
41. Isolated pawn, attack
42. Isolated pawn, breakthrough by d5
43. Hanging pawns
44. Backward pawn
45. Passed pawn
46. Phalanx
47. Rook manoeuvre
48.Knight manoeuvre
49.Bishop manoeuvre
50.Queen manoeuvre
51. Capturing the queen
52. Piece on a bad square
53. Knight on the edge of the board
54. Knight on d6, e6 or d3, e3
55. Opposite coloured bishops
56. A Pair of bishops
57. Strong knight versus bad bishop
58. Exchange of a piece
59. Avoiding exchanges
60. Liquidation
61. Advantage in the centre
62. Breakthrough in the centre
63. Blowing up the centre
64. Hedgehog
65. Hedgehog, blowing up with d5
66.Minority attack
67. Stone wall
68. King's Indian attack against the white king
69. Sicilian piece sacrifice on d5
70. Sicilian exchange sacrifice on c3
71. Other Sicilian piece sacrifices
72. Blockade
73. Weak square
74. Perpetual check
75. Profilax
76. Space advantage
77. Double rook sacrifice
Solutions

Citation preview

Contents 1) Epaulet mate — (1-54) 2) Back rank — (55-108) 3) Double attack — (109-162) 4) Deflection — (163-216) 5) Decoy — (217-270) 6) Clearance — (271-324) 7) Discovered attack — (325-378) 8) Opening up the diagonal — (379-432) 9) Long diagonal — (433-486) 10) Opening up a line — (487-540) 11) Open line — (541-594) 12) Closing a line — (595-648) 13) Pin — (649-702) 14) Rook on the 7th or the 2nd rank — (703-756) 15) Sacrifice on h7 — (757-810) 16) Sacrifice on h6 — (811-864) 17) Sacrifice on g7 — (865-918) 18) Sacrifice on g6 — (919-972) 19) Sacrifice on f7 — (973-1026) 20) Sacrifice on f6 — (1027-1080) 21) Attack against the kingside — (1081-1134) 22) Hunting the king — (1135-1188) 23) Annihilation of the defensive piece — (1189-1242) 24) King in the middle — (1243-1296) 25) March with the king — (1297-1350) 26) Opposite side castling — (1351-1404)

Laszlo Polgar

Chess Middlegames

27) Counter attack — (1405-1458) 28) Defence — (1459-1512) 29) Attack with pawns — (1513-1566) 30) Pawn breakthrough — (1567-1620) 31) Pawn hunt — (1621-1674) 32) Advantage in development — (1675-1728) 33) Positional pawn sacrifice — (1729-1782) 34) Positional exchange sacrifice — (1783-1836) 35) Positional piece sacrifice — (1837-1890) 36) Positional queen sacrifice — (1891-1944) 37) Penetration — (1945-1998) 38) Activation of pieces — (1999-2052) 39) Intermediate move — (2053-2106) 40) Weakness of the isolated pawn — (2107-2160) 41) Isolated pawn, attack — (2161-2214) 42) Isolated pawn, breakthrough by d5 — (2215-2268) 43) Hanging pawns — (2269-2322) 44) Backward pawn — (2323-2376) 45) Passed pawn — (2377-2430) 46) Phalanx — (2431-2484) 47) Rook manoeuvre — (2485-2538) 48) Knight manoeuvre — (2539-2592) 49) Bishop manoeuvre — (2593-2646) 50) Queen manoeuvre — (2647-2700) 51) Capturing the queen — (2701-2754) 52) Piece on a bad square — (2755-2808) 53) Knight on the edge of the board — (2809-2862) 54) Knight on d6, e6 or d3, e3 — (2863-2916) 55) Opposite coloured bishops — (2917-2970) 56) A Pair of bishops — (2971-3024) 57) Strong knight versus bad bishop — (3025-3078)

Laszlo Polgar

Chess Middlegames

58) Exchange of a piece — (3079-3132) 59) Avoiding exchanges — (3133-3186) 60) Liquidation — (3187-3240) 61) Advantage in the centre — (3241-3294) 62) Breakthrough in the centre — (3295-3348) 63) Blowing up the centre — (3349-3402) 64) Hedgehog — (3403-3456) 65) Hedgehog, blowing up with d5 — (3457-3510) 66) Minority attack — (3511-3564) 67) Stone wall — (3565-3618) 68) King’s Indian attack against the white king — (36193672) 69) Sicilian piece sacrifice on d5 — (3673-3726) 70) Sicilian exchange sacrifice on c3 — (3727-3780) 71) Other Sicilian piece sacrifices — (3781-3834) 72) Blockade — (3835-3888) 73) Weak square — (3889-3942) 74) Perpetual check — (3943-3996) 75) Profilax — (3997-4050) 76) Space advantage — (4051-4104) 77) Double rook sacrifice — (4105-4158)

Laszlo Polgar

Chess Middlegames

Epaulet mate

1 8 7 6 5 4 3 2 1

4

rmbZkZ0s opopaNZp 0Z0Z0m0Z Z0Z0Z0ZQ 0Z0ZPZ0Z Z0M0Z0Z0 POPO0Z0O S0A0JBZq a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZbj0s0Z opopaQZp 0Z0Z0MnZ Z0Z0o0M0 0ZBmPZ0Z Z0ZPZ0Z0 POPZ0lPO S0AKZ0ZR a

b

2 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

f

g

h

a

b

c

d

e

f

g

h

6

rZ0Z0j0s o0o0Zpop 0aNZbZ0Z Z0Z0O0Z0 QZ0Z0ZqO Z0O0Z0Z0 PZ0Z0OPZ SNZ0ZRJ0 a

e

rZbZkZ0s o0opa0Zp 0ZnZ0ZNZ Z0Z0Z0oQ 0ZpZ0Z0Z Z0Z0Z0Z0 PO0Z0OPO Z0Z0Z0J0

3 8

d

5

rZkZ0Z0s opo0aqZp 0ZnZNZ0Z Z0Z0Z0A0 0Z0o0ZQZ Z0Z0Z0Z0 POPZ0OPO S0Z0Z0J0 a

c

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0mkZ opl0Zpop 0Z0Z0Z0Z ZBO0o0MQ 0Z0Z0o0Z Z0Z0Z0Z0 PO0Z0OPO Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

7 8 7 6 5 4 3 2 1

10

kZ0Z0Z0Z opZrZ0Z0 0m0Z0a0Z ZNZ0Z0Z0 0Z0Z0LpZ Z0Z0ZpOq 0Z0Z0O0Z Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0Zrj opo0m0op 0ZnZbZqZ Z0ZpZpZ0 0Z0Z0Z0S Z0LBZNZ0 PA0Z0OPO Z0Z0S0J0 a

8 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

12

0Z0Z0Zrj ZbZ0Z0sp 0ZqZ0m0Z o0m0Z0Z0 0Z0ZpZ0L ZPM0ZNZ0 PAPZRZ0Z J0Z0S0Z0 a

c

0Z0s0Zrj opZ0Z0op 0ZnopZqZ Z0o0Z0MN 0Z0Z0O0Z O0Z0Z0Z0 0APZ0Z0O ZKZRZ0ZQ

9 8

b

11

rm0j0a0Z opobZ0o0 0Z0Z0Z0Z Z0ZQZPZ0 0Z0Z0ZnZ Z0Z0ZNl0 POPOBZ0Z SNAKZ0Z0 a

Epaulet mate

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srZkZ opZ0Zpop 0Z0Z0l0Z Z0ZbZ0Z0 0O0L0m0Z O0Z0ZBZ0 0M0Z0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

13 8 7 6 5 4 3 2 1

16

rm0l0s0j opobo0ap 0Z0Z0opA Z0Z0Z0M0 0ZQZ0Z0Z Z0O0Z0Z0 PO0ZPOPO S0Z0JBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZrZ0j o0ZnZQap bZ0Z0Z0Z l0ZNMpZ0 0oBZ0Z0Z Z0Z0Z0Z0 PZ0Z0OPO Z0ZRZRJ0 a

14 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

18

0Z0ZrZkZ Z0oRO0op 0ZpZ0Z0Z o0Z0ZpM0 0Z0Z0LnZ l0Z0Z0O0 PZ0ZPO0O Z0Z0Z0J0 a

c

rZ0l0skZ Z0o0a0op pZnZ0m0Z ZpZpZbM0 0Z0Z0Z0Z ZBO0A0Z0 PO0M0OPO S0ZQZRJ0

15 8

b

17

0Zrs0ZkZ o0Z0Z0ap 0onZRZ0Z Z0opZpM0 0Z0Z0O0Z ZPl0Z0O0 PZ0L0A0O Z0ZRZKZ0 a

Epaulet mate

c

d

e

f

g

h

8 7 6 5 4 3 2 1

kZ0Z0Z0s sbZ0ZRZp NL0Z0ZpZ Z0o0ZnZ0 0o0Z0Z0Z Z0Z0Z0Z0 POnZ0ZPO Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

19 8 7 6 5 4 3 2 1

22

0Z0m0s0j Zpo0ZpZp 0s0Z0o0M o0Z0ZNZQ 0Z0ZPZRZ ZPl0Z0OK PZ0Z0Z0O Z0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZrZ0l0j opm0ZnZp 0Z0Z0O0Z Z0Z0ZNS0 PZpA0Z0Z Z0O0Z0Z0 0Z0Z0ZQO Z0Z0Z0J0 a

20 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

24

0Z0Z0skZ Z0Z0Zpop pZrZ0Z0Z ZpZpZ0l0 0OnAnZ0Z ONZ0OBZb 0Z0Z0OPO L0ZRZRZK a

c

0ZrZrZkZ Zbl0Zpo0 pZ0Z0a0Z mpZpMNo0 0Z0O0Z0Z Z0ZQZPZP POBZRZPZ S0Z0Z0J0

21 8

b

23

rZ0Z0skZ ZbZpZpop ponZ0ZnZ Z0Z0lNAQ 0ZBZPZ0Z Z0O0Z0Z0 PZPZ0ZPO S0Z0ZRJ0 a

Epaulet mate

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0a0Z0s opZ0l0j0 0Z0Z0ZpZ Z0ZpZpOp 0ZpOrO0J O0O0O0Z0 0O0ARZ0Z Z0Z0S0L0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

25 8 7 6 5 4 3 2 1

28

0Z0j0Z0s ZbZpZ0ap 0o0Z0ZpZ Z0Z0opZ0 0Z0ZnZ0l Z0Z0ZnZP POPO0OPZ S0AQZRMK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0skZ Z0Z0o0ap 0l0ZpmpZ Z0Z0Z0Z0 QOpZ0Z0Z Z0Z0Z0O0 0Z0AnOBO ZRS0Z0ZK a

26 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

30

kZrZrZ0Z o0Z0Z0o0 0a0L0Z0Z mNZ0A0Z0 0Z0ZpZ0Z ZBZ0ZpOq 0O0Z0O0O S0ZRZ0ZK a

c

0Z0Z0Z0s o0o0Z0j0 0o0o0o0Z Z0ZPo0o0 0ZqZPmPs Z0O0LPJn PZPZ0Z0O Z0M0ARZR

27 8

b

29

0Z0Z0ZkZ opZ0ZpZp 0ZpZ0ZpZ Z0ZpZ0Zn 0O0O0l0Z O0Z0ZNZP 0Z0ZnZBZ ZRS0Z0ZK a

Epaulet mate

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0snl0Zrj o0ZbZpZp 0ZnopOpL Z0o0Z0Z0 0Z0ZPZ0M Z0OPZ0O0 PZ0Z0ZBO Z0ZNSRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

31 8 7 6 5 4 3 2 1

34

0Z0Z0jrZ S0Z0Z0Zp 0Z0Z0a0Z Z0Z0m0Z0 0Z0M0ZPl Z0O0Z0ZP 0Z0L0Z0J Z0Z0ZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0s0j o0Z0Z0op 0o0Z0Z0Z Z0Z0Z0s0 0Z0ZQm0Z Z0Z0Z0Sq PO0Z0O0O Z0Z0ZRJN a

32 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

36

0Z0ZkZrZ opo0Z0Zp 0Z0Z0Z0Z Z0Z0o0Z0 0Z0ZPZ0Z Z0M0Z0Zn POPZ0ZrO Z0ZRZRZK a

c

rZ0m0Zrj Z0ZPA0ap 0Z0ZQZpZ ZqZ0Z0Z0 0ZpZNZ0Z Z0Z0Z0Z0 0O0Z0ZPO Z0ZRZRZK

33 8

b

35

rmbj0a0s oplpmQZp 0Z0ZpZpZ Z0o0M0A0 0Z0ZNZ0Z Z0Z0Z0Z0 POPZ0OPO S0Z0JBZR a

Epaulet mate

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0arj Z0Z0ZpMp 0Z0o0O0Z o0Z0o0Z0 0oqZbZ0Z Z0Z0ZNZQ POPZ0Z0O ZKZRS0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

37 8 7 6 5 4 3 2 1

40

rZbl0Z0j opo0mQo0 0Z0ZpM0o Z0Z0Z0M0 0ZBO0Z0Z Z0O0m0Z0 PO0Z0ZPO S0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0l0Zks o0o0ZpZp 0o0Z0o0A Z0a0m0Z0 PZpoNZbZ Z0Z0ZNZ0 0OPZ0OPO S0ZQS0J0 a

38 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

42

rZbZ0ZkZ opo0m0Zp 0ZnZ0lpA Z0Z0Z0M0 0Z0MPZ0Z Z0LPZ0O0 PZPZ0ZBO Z0Z0Z0J0 a

c

0Z0Z0AkZ ZpZqZ0o0 pZ0ZpZ0o Z0Z0Z0m0 0Z0Z0Z0L ZBZ0ZbZ0 PZPZ0Z0O Z0Z0ZRJ0

39 8

b

41

NZkZra0s ZpZ0Z0o0 nZNobo0o L0ZpZ0Z0 0Z0Z0Z0Z Z0Z0A0Zq POPZ0O0O ZKZRZ0S0 a

Epaulet mate

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ ZpZ0Zpo0 pZqZ0ZNZ O0o0Z0m0 0Z0Z0ZbZ Z0M0O0A0 0OQZ0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

43 8 7 6 5 4 3 2 1

46

rZblrj0Z opZ0apoB 0Zpm0Z0o Z0ZpM0ZQ 0Z0O0O0Z Z0M0Z0Z0 PO0Z0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0Z0s opo0mkZp 0ZnZNM0Z Z0Z0o0Z0 0l0a0ZQZ Z0Z0Z0Z0 PZ0Z0OPO S0A0S0J0 a

44 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

48

rmbZrZ0Z opo0Zkop 0Z0Z0Z0Z Z0ZPZpZ0 0L0Z0O0l Z0Z0ZNZ0 POPMBZ0O S0AKZ0Zn a

c

0ZqZ0ZkZ o0Z0Opap 0o0Z0mpZ Z0ZPZ0Z0 0ZPZ0m0Z Z0Z0ZbZ0 PA0Z0OPO L0Z0SNJ0

45 8

b

47

rZblkZ0s opZpmpZp 0ZpZ0ZpA ZBa0Z0Z0 0ZNZPZ0Z Z0Z0Z0Z0 PZPZ0OPO ZRZQZRJ0 a

Epaulet mate

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZQZ0ZRZ Z0Z0lpZp po0s0Zpj Z0Z0Z0Z0 0O0ZPm0O Z0Z0Z0M0 PZ0Z0OPZ Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

49 8 7 6 5 4 3 2 1

52

rZ0lrj0Z ZbZ0apoB pZ0Z0Z0Z ZpZPM0Z0 0m0Z0Z0Z Z0Z0Z0Z0 0A0ZQOPO Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0Z0ZkZ o0o0Zpo0 0a0s0Z0o Z0ZPZ0Z0 QO0Z0Z0Z Z0Z0ZNZ0 PZ0ZqOPO Z0Z0ZRJR a

50 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

54

rZ0l0skZ obZ0Apop 0Z0ZpZ0Z ZpZ0Z0Z0 0ZpmPZnZ Z0Z0Z0M0 POPM0ZPO S0L0SBJ0 a

c

0ZksNZ0Z opZ0Z0Z0 0ZnZ0ZQZ Z0o0Z0Z0 0ZbZNZ0Z Z0OpZ0Z0 qZ0Z0OPZ Z0Z0S0J0

51 8

b

53

0Z0s0m0j Z0ZPZ0Zp po0Z0l0Z Z0oQo0Z0 PZPZ0ZBZ Z0ZbZ0S0 0O0Z0Z0O Z0Z0Z0J0 a

Epaulet mate

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblrZkZ opZ0Z0op 0Z0a0m0Z Z0opm0M0 0Z0Z0M0Z Z0OBZ0Z0 PO0Z0OPO S0AQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

55 8 7 6 5 4 3 2 1

58

0Z0Z0ZkZ Z0Z0lpZ0 0A0Z0Zpo Z0S0a0Z0 PZ0MbZ0Z ZPZ0L0Z0 rZ0Z0OPO Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZrZkZ ZpSqZ0ap pZ0opZpZ Z0Z0Z0Z0 PZ0MPZQZ Z0Z0Z0Z0 0O0Z0ZPO Z0S0Z0ZK a

56 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

60

0Z0s0skZ o0Znmpo0 0Z0ZpZ0o l0o0O0Z0 PZPZ0Z0Z Z0Z0ZNZ0 0ZQZ0OPO ZRARZ0J0 a

c

0Z0s0ZkZ o0ZrZpo0 0Z0Z0a0Z Z0Z0Z0Zp 0O0o0l0Z Z0ARZ0Z0 PZ0ZQZPO Z0ZRZ0J0

57 8

b

59

0ZrZrZkZ ZpZqZpop 0Z0o0a0Z o0ZPZ0Z0 0Z0L0Z0Z Z0Z0ZNZ0 PO0ZROPO Z0Z0S0J0 a

Back rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ Z0Z0Z0lp po0Z0ZpZ Z0oPZ0Z0 0Z0ZPo0Z ZPZ0Z0Z0 PZRZ0ZPO Z0Z0L0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

61 8 7 6 5 4 3 2 1

64

0Z0s0akZ opl0Z0op 0ZpZ0Z0Z Z0O0ZQZB 0Z0Z0Z0Z ZPZ0Z0O0 PZ0Z0Z0O Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0Z0s0j Z0o0Z0op 0Z0Z0l0Z Z0L0Z0Z0 0m0S0m0Z Z0Z0ZNZ0 0Z0M0OPO Z0Z0S0J0 a

62 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

66

0Z0s0ZkZ o0l0Zpop 0o0Z0m0Z Z0Z0OBZb 0ZpL0Z0Z OPZ0Z0ZP 0Z0M0ZPZ Z0Z0S0J0 a

c

0s0Z0s0j Z0Z0Zpap pZ0S0Z0Z Z0ZBo0L0 0Z0ZPo0Z Zqm0M0Z0 0Z0Z0OPO Z0Z0ZRJ0

63 8

b

65

0ZrlbZ0j Z0Z0Z0op 0Z0ZPo0Z Z0ZBL0Z0 pZ0Z0SpZ Z0Z0Z0Z0 0O0ZPZKO Z0Z0Z0Z0 a

Back rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZrZkZ opZ0ZpZp 0Z0Z0ZpZ Z0ZpZ0Z0 0Z0a0Z0Z O0ZRZPZ0 0O0A0ZPO ZRZ0Z0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

67 8 7 6 5 4 3 2 1

70

rZ0Z0ZkZ Z0Z0Zpo0 Bs0Z0Z0o Z0S0m0Z0 0Z0Z0Z0Z ZpJ0OPZ0 0O0Z0Z0O S0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0srZkZ ZpZ0Zpop pZ0Z0Z0Z S0ZbM0l0 0L0OPZ0Z Z0Z0Z0Z0 0O0Z0OPO Z0Z0S0J0 a

68 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

72

0s0Z0ZkZ Z0l0Zpop 0ZrZ0Z0Z Z0Z0oBZ0 0obZ0Z0Z Z0Z0ZPZ0 0O0L0ZPO S0ZRZ0ZK a

c

0Z0ZrZ0j ZpZ0O0op pa0Z0Z0Z Z0o0lNZ0 0Z0o0ZQZ O0O0Z0Z0 0O0Z0ZPO Z0Z0ZRZK

69 8

b

71

0Z0ZrZkZ o0Z0Zpop bZ0Z0ZqZ Z0LNZ0Z0 0A0Z0OPZ O0Z0Z0Z0 0OPZrZ0O Z0JRZ0Z0 a

Back rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0l0ZkZ Z0Z0Zpo0 0o0Z0a0o ZBmPZ0Z0 0ZQMrZ0Z s0Z0Z0Z0 PZ0Z0OPO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

73 8 7 6 5 4 3 2 1

76

rZ0ZrZkZ oRZ0apop 0ZpZ0m0Z Z0Z0L0Z0 0Z0O0A0Z lBZ0Z0Z0 PZ0Z0OPO Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrskZ Z0Z0Z0op 0ZpAbZ0Z Z0Z0Z0Z0 0opZ0Z0Z O0Z0S0Z0 0O0Z0OPO S0Z0Z0J0 a

74 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

78

rZ0ZrZkZ ZpZbZpo0 0o0Z0Z0o Z0ZPl0Z0 0S0Z0Z0Z O0ZQZBZ0 0O0Z0ZPO S0Z0Z0ZK a

c

rZ0s0ZkZ Z0l0Zpop 0Z0Z0Z0Z opZRO0Z0 0Z0Z0Z0Z ZpO0L0Z0 0O0Z0OPO Z0ZRZ0J0

75 8

b

77

0s0Z0Z0j Z0Z0mpop pZ0Z0lbZ O0Z0Z0Z0 0oRZ0Z0Z ZBZ0Z0Z0 0O0LRZPO Z0Z0Z0J0 a

Back rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rl0s0ZkZ Zpa0Zbop pZ0Z0o0Z O0MPm0Z0 0O0A0Z0Z Z0L0ZBO0 0ZPZ0Z0O S0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

79 8 7 6 5 4 3 2 1

82

rZblrZkZ opZnZpZp 0ZpZ0apA Z0ZBZ0Z0 0Z0Z0ZNZ Z0Z0ZQZ0 POPZ0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Zrs0ZkZ Z0Z0Zpo0 pM0Zpa0Z L0Z0Z0Z0 0S0Z0Z0Z O0ZqZ0Z0 0Z0Z0OPO Z0Z0ZRJ0 a

80 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

84

RmkZ0Z0Z ZpZ0Z0o0 0OpZ0oqZ Z0A0s0Z0 0O0Z0Z0Z Z0Z0Z0ZP 0Z0s0ZPL Z0Z0ZRJ0 a

c

0j0srZ0Z Z0o0Zpop 0oQZ0Z0Z Z0Z0a0l0 0Z0Z0Z0Z S0Z0Z0Z0 PO0Z0MPO Z0S0Z0J0

81 8

b

83

0Z0Z0skZ o0Z0SpZp 0Z0Z0ZpZ L0Z0Z0Z0 0Z0ZPlbZ Z0Z0Z0Z0 PZRZ0OPO Z0ZrM0J0 a

Back rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrjrZ0Z Z0Z0oQZR pZqoPo0Z Z0Z0Z0Z0 0ZpZ0O0Z Z0Z0Z0Z0 POPZ0ZPZ Z0JRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

85 8 7 6 5 4 3 2 1

88

0ZbZ0s0j opZ0Z0op 0Z0Z0Z0Z Z0l0s0Z0 0Z0o0ZnO O0ZBZ0O0 0OPL0ZKZ Z0ZNSRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0skZ Z0Z0Zpop 0Z0Z0Z0Z Z0Z0Z0Z0 0Z0Z0Z0Z Z0Z0OQZ0 rZqZ0OPO SRZ0Z0J0 a

86 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

90

rZbZ0skZ o0o0apop 0ZpZ0Z0Z Z0ZqZ0Z0 0Z0Z0Z0Z ZPZ0Z0O0 PZPZQJ0O SNA0S0Z0 a

c

rm0Z0s0j Z0Z0Z0op 0oNZ0o0Z o0Z0M0Z0 0ORZ0Z0Z OQZ0OPoq 0Z0Z0m0Z Z0S0Z0J0

87 8

b

89

0s0ZrZkZ o0Z0ZpZp 0Z0Z0ZpA l0Z0Z0Z0 0Z0Z0Z0Z Z0ZQZ0O0 PaPZ0OKO ZRZ0ZRZ0 a

Back rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

kZrZrZ0Z opZ0Z0Zp 0l0Z0Z0Z Z0ZRZNo0 0a0Z0Z0Z ZPZ0ZPZ0 0ZQZRZPO Z0Z0Z0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

91 8 7 6 5 4 3 2 1

94

0Z0Z0s0j obZ0Z0op 0opl0s0Z Z0ZpZ0M0 0ZnZ0M0Z ZQZ0O0Z0 PO0Z0Z0Z Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0ZkZ orZ0Zpop 0o0Z0lnZ Z0Z0ZNL0 0ZpZ0Z0Z Z0Z0Z0Z0 PZ0Z0OPO Z0Z0S0J0 a

92 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

96

0Z0Z0ZkZ Z0Z0Zpa0 0o0M0Z0o o0Z0Z0o0 0Z0Z0l0Z L0Z0Z0ZP POrZ0Z0Z Z0ZRS0ZK a

c

0Z0s0skZ opZ0Zpop 0Z0Z0Z0Z Z0o0Z0Z0 0Z0ZPA0m O0O0ZqOP QZ0ZRO0J Z0Z0Z0S0

93 8

b

95

0Z0Z0Z0Z Z0ZrZpj0 0L0Z0ZpZ Zpo0ZqZp 0ZBm0ObZ Z0O0Z0Z0 PO0S0ZPO Z0JRZ0Z0 a

Back rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0j0Z Z0s0mpo0 po0SpZ0o Z0Z0O0Z0 POPM0Z0Z ZKZ0Z0O0 0Z0Z0Z0O Z0ZRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

97 8 7 6 5 4 3 2 1

100

rmbZ0Zks opo0Zpop 0a0Z0Z0Z Z0ZqZ0Z0 0Z0oNZ0Z L0Z0ZNZ0 POPZ0JPO S0A0S0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

kZ0s0Z0Z opl0Z0o0 0Z0Z0o0Z Z0Z0o0ZQ 0ZnZ0Z0O Z0O0Z0O0 POBS0O0Z Z0J0Z0Z0 a

98 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

102

0ZRZ0s0j o0m0lpop no0ZpZ0Z Z0Z0O0Z0 0O0ZNZ0Z O0Z0Z0O0 0Z0Z0OBO Z0ZQZ0J0 a

c

rZ0Z0ZkZ ZpZ0Zpop 0l0Z0Z0Z onZ0o0Z0 0oQZ0Z0Z Z0Z0Z0OP PO0Z0OBZ Z0ZRZ0J0

99 8

b

101

0s0s0ZkZ Z0l0Zpop pZ0ZbZ0Z Z0Z0o0Z0 0o0ZPZ0Z Z0Z0ZBZ0 POPS0LPO Z0ZRZ0ZK a

Back rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZ0j ZqZ0snop pZ0Z0o0Z Zpo0Z0Z0 0Z0Z0ZQZ ZPZ0ZPZ0 PAPZ0JPO Z0ZRS0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

103 8 7 6 5 4 3 2 1

106

kZrZ0Z0Z opZrZ0ZR 0Z0ZqZ0Z Z0Z0oQZ0 0Z0Z0Z0Z Z0ZPZ0Z0 PO0Z0SPO Z0Z0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

kZrZ0Z0Z opZqZ0Z0 0ZpM0Z0Z Z0Z0ZQZ0 0ZPZ0Z0Z ZPZ0Z0Z0 PZ0Z0ZPO Z0Z0Z0ZK a

104 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

108

0s0ZrZkZ o0ZqZpap 0Z0Z0ZpZ Z0Z0m0Z0 0Z0Z0L0Z Z0M0Z0Ob POPZ0OBO S0ARZ0J0 a

c

0Z0Z0skZ Z0l0Zpop 0Z0ZBZ0Z Z0Z0Z0Z0 0o0ZPZ0Z ZPZ0ZQaP 0ZrZ0Z0Z Z0ZRZRZK

105 8

b

107

rZ0s0ZkZ ZqZ0mpop 0Z0obZ0Z Z0Z0o0Z0 0OBZPZ0Z Z0Z0M0Z0 QZ0Z0OPO S0ZRZ0J0 a

Back rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0Z0j o0Z0Z0op 0o0Z0Z0l Z0Z0Z0Z0 0O0Z0ZPZ Z0Z0ZBLb PZ0ZPZ0O Z0ZRZ0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

109 8 7 6 5 4 3 2 1

112

0sqZ0skZ opZ0opZp 0ZnZ0ZpZ Z0oNL0Z0 0ZPZ0ZbZ Z0Z0Z0O0 PO0ZPOBO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZrZkZ Z0ZRApap pZ0ZpZpZ Zpo0O0Z0 0ZPZ0Z0Z Z0Z0ZQZ0 PZqZ0OPO Z0Z0S0J0 a

110 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

114

0m0ZrZkZ Zbs0Z0op po0l0Z0Z Z0ZPo0Z0 0ZPZ0ZQZ Z0ZBZ0Z0 PA0Z0ZPO Z0S0S0J0 a

c

0ZrZRm0j ZpZqZ0op pZ0Z0Z0Z Z0Z0ZpZ0 0Z0O0Z0Z ZBO0Z0O0 PZ0ZQO0O Z0Z0Z0J0

111 8

b

113

rZ0Z0ZkZ o0ZnZpop 0Z0Z0Z0Z Z0ZpZ0Z0 0l0AnZ0Z Z0Z0ZQZ0 0Z0Z0OPO S0Z0S0J0 a

Double attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0l0Z0ZkZ Z0Z0oRZ0 pZ0ZrZpZ Z0Z0Z0O0 0Z0Z0Z0Z O0O0ZQZ0 KO0Z0Z0Z Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

115 8 7 6 5 4 3 2 1

118

0Z0Z0Z0j opZRZ0Zp 0ZpZps0Z Z0Z0a0Z0 PO0ZPZPZ Z0Z0Z0ZP 0ZPZQZ0Z Z0Z0l0MK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0ZkZ Z0Z0Z0op pZ0Z0Z0Z ZplPZrM0 0ZpZ0ZQZ Z0ZbZ0Z0 PO0Z0ZPO Z0Z0S0ZK a

116 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

120

0ZbZ0Z0j Z0o0l0op 0oPZ0Z0Z o0Z0Z0Z0 0Z0Z0s0O O0L0ZBZ0 0Z0Z0OPZ Z0ZRZ0J0 a

c

0Z0s0ZkZ ZpZ0Z0op pZ0s0o0Z Z0Z0l0Z0 0Z0mPZ0Z ZPM0Z0ZP 0O0S0LPZ Z0ZRZ0J0

117 8

b

119

rZbZ0s0j opZ0ZRop 0ZpZ0Z0Z Z0l0ZpZ0 0Z0Z0Z0Z ZBZ0Z0Z0 PZ0ZQOPO ZRZ0Z0J0 a

Double attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0mkZ o0Z0spop 0o0Z0Z0Z Z0ZqMQZ0 0Z0Z0Z0Z Z0Z0O0Z0 PZ0Z0OPO ZRS0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

121 8 7 6 5 4 3 2 1

124

0Z0s0Z0Z Z0mnS0Zp 0Z0o0ZkZ o0oPo0o0 NZPZPZ0Z O0ZNZ0O0 0Z0Z0ZKO Z0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrZkZ Z0Z0Zpop 0Z0Z0Z0Z Z0ZNZ0Z0 0ZQZPO0Z a0Z0Z0Z0 0Z0Z0lPO S0Z0Z0ZK a

122 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

126

0ZrZ0Z0j ZpZ0l0op pZbZ0o0Z O0Z0o0Z0 0OPA0L0Z Z0ZrZ0Z0 0Z0Z0OPO ZRS0Z0J0 a

c

rZblka0s opoPZ0op 0Z0Z0m0Z Z0Z0ZpA0 0ZPZ0Z0Z Z0M0Z0Z0 PO0ZPOpO S0ZQJBZR

123 8

b

125

0ZrZ0s0Z opZ0Zpj0 0m0Zqmpo Z0Z0o0Z0 0Z0ZPZ0Z O0Z0ZNMP 0O0L0OPZ Z0S0ZRJ0 a

Double attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrskZ opL0ZpZp 0ZpZ0ZpZ Z0Z0Zqm0 0ZPZ0Z0Z Z0Z0Z0Z0 PZ0SBOPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

127 8 7 6 5 4 3 2 1

130

rm0l0skZ Z0Z0opap pZ0Z0ZpZ ZpZnM0Z0 0Z0O0Z0Z ZBZ0Z0Z0 PO0ZQOPO ZRA0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZkZ0s Z0obZ0a0 0Z0ZpZ0Z opl0o0op 0Z0ZPZ0Z ZQO0M0O0 PO0ZBOPZ Z0JRS0Z0 a

128 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

132

0Z0Z0Z0j opZ0sRap 0mpZqZpZ Z0ZpM0Z0 0Z0O0Z0Z Z0O0Z0LP PO0Z0ZPA Z0Z0Z0J0 a

c

0s0Z0skZ Z0Z0Z0ap 0o0l0mpZ Z0mPopZ0 NS0ZPZ0Z Z0Z0A0Z0 0Z0Z0OPO Z0ZQSBJ0

129 8

b

131

0Z0Z0Z0Z ZpZ0Z0ok 0Z0Z0Z0o Z0Zqo0Z0 rm0oNZ0Z Z0ZPZ0Z0 PZRL0OPO Z0Z0Z0J0 a

Double attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0lrZkZ Z0ZbZpZp nZ0o0mpa ZpZPo0Z0 0S0ZPZ0Z O0M0Z0Z0 0ZQM0OPO Z0A0SBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

133 8 7 6 5 4 3 2 1

136

0Z0Z0Zrj o0Z0Z0ap 0o0L0Z0Z Z0o0A0Z0 0ZPZ0Z0Z ZPZ0S0ZP qZ0Z0ZPJ Z0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZkZ0s ZpZbZ0op pZ0ZpoqZ Zna0ZNZ0 0Z0Z0O0A Z0O0Z0O0 POBZQZKO S0Z0ZRZ0 a

134 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

138

0sbZ0s0j Z0lnapop pZpZpZ0Z Z0ZpO0Z0 0Z0M0ZQZ Z0O0Z0M0 PO0Z0OPO S0A0S0J0 a

c

rZ0Z0skZ Zbl0apZp pZ0ZpZpZ Z0Z0Z0Zn RZ0M0Z0Z ZPZBZ0ZQ 0APZ0OPO Z0Z0S0J0

135 8

b

137

rm0lka0s ZbZ0Z0Z0 pZ0ZpoNZ Z0m0Z0Ap PoNo0Z0Z ZBZ0Z0Z0 0O0Z0OPO S0ZQZRJ0 a

Double attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrs0akZ obZ0Zpop 0Z0ZpZ0Z ZBmPZ0Zq 0Z0ZPZ0Z O0Z0ZNA0 QZ0Z0OPO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

139 8 7 6 5 4 3 2 1

142

rZ0l0skZ o0Z0Zpop 0onZpZ0Z Z0a0Z0Z0 0m0Z0Z0Z OPM0ZBO0 0Z0A0O0O S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0l0skZ Z0Z0Zpop pZ0Z0Z0Z mpZ0ObZ0 0Z0oNA0Z O0ZQZ0Z0 0O0Z0OPO Z0S0S0J0 a

140 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

144

0Z0s0Zka obZqZpZp 0o0ZpZpO Z0Z0Z0Z0 0ZrOPZ0Z O0Z0LNZ0 0A0Z0OPZ Z0ZRS0J0 a

c

rZbZ0ZkZ Z0l0a0Z0 pZ0o0ZPo Z0Z0o0ZP 0o0ZNZ0Z ZPZ0Z0Z0 0OPZQO0Z Z0J0Z0ZR

141 8

b

143

rZ0s0akZ Z0lbZ0o0 po0opZpZ Z0m0Z0Z0 Pm0ZPZ0Z ZNM0A0ZB 0OPZQZ0O S0Z0ZRZK a

Double attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbs0ZkZ opZ0Zpop 0Z0Z0m0Z Z0Z0Z0Zq 0O0m0A0Z O0MBZ0Z0 0Z0Z0OPO SQZ0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

145 8 7 6 5 4 3 2 1

148

rZ0Z0ZkZ Z0ZbZpap po0Z0ZpZ M0Zno0Z0 PZ0Z0Z0Z Z0O0ZBZ0 0O0Z0OPO S0A0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrZkZ Zno0s0op 0opo0l0Z Z0Z0Z0M0 0O0Z0O0Z Z0Z0SQO0 0Z0Z0Z0O Z0Z0S0J0 a

146 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

150

kZ0Z0Z0Z ZpZqZpo0 pZ0o0Z0Z O0ZPZ0O0 0Z0ZRZ0s Z0Z0Z0Zr KOPZQZRZ Z0Z0Z0Z0 a

c

0Z0Z0skZ o0Z0Z0op 0Z0ZRZ0Z l0ZNZ0Z0 0aPZ0s0Z Z0ZQZ0Z0 PZ0Z0ZPO Z0S0Z0ZK

147 8

b

149

0m0ZrZkZ s0Z0apop pM0o0Z0Z l0o0Z0Z0 0Z0ZBL0Z Z0Z0Z0O0 PZ0ZPO0O ZRZ0ZRJ0 a

Double attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

qZ0Z0skZ Z0s0Zpop 0o0ZpZ0Z Z0ZnZ0Z0 0ZBO0a0Z ZQZ0Z0O0 PA0Z0O0O ZRZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

151 8 7 6 5 4 3 2 1

154

rZbZrmkZ ZpZ0Zpa0 0lpo0ZpZ Z0m0Z0Z0 0ZPMPZ0o ZPM0Z0OP 0Z0S0OBJ ARZQZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0Z0s ZpZ0j0Z0 0ZbopZ0Z o0Z0mpZ0 PZPS0Z0Z Z0M0ZPO0 0O0Z0ZKZ Z0ZBZ0Z0 a

152 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

156

0Zks0a0s o0o0m0Z0 0onZqo0Z Z0Z0o0op QZ0ZPZ0M ZNO0A0O0 PO0Z0OKO S0ZRZ0Z0 a

c

rZbZRZ0Z o0Z0Zrjp 0ZpZ0opZ Zpl0Z0Z0 0ZPZ0OnL Z0Z0Z0Z0 PO0M0ZPO ZBJ0S0Z0

153 8

b

155

rZ0ZnZ0Z Z0Z0ZkoB 0Z0Z0oNo Z0ZbZ0Z0 0lpZ0L0Z Z0Z0Z0Z0 0O0Z0OPO Z0Z0S0J0 a

Double attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zka0s Z0onZpZp pZ0ZpZpZ ZPZqZ0MQ 0ZpO0Z0Z Z0O0Z0O0 0Z0Z0O0O S0A0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

157 8 7 6 5 4 3 2 1

160

0Z0Z0ZkZ Z0o0Z0Zp pZ0o0Z0Z Z0ZPs0Zq 0ZPZ0Z0Z Z0L0Z0Ob 0O0Z0M0O Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Zbj0s ZpZ0apZ0 0Z0Zpm0Z o0Z0M0Zp 0ZPo0A0Z Z0Z0Z0Z0 qZBZQOPO Z0ZRZRJ0 a

158 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

162

0Z0Z0Z0j Z0Z0Z0Zp pZ0o0ZrZ ZpZRaps0 0Z0Z0o0l Z0ONZQZ0 PO0Z0OPO Z0Z0Z0SK a

c

qZrZ0ZkZ obs0apop 0onZpZ0Z ZQZPZ0Z0 0Z0Z0Z0Z ZPZ0Z0O0 PA0Z0OBO Z0SRM0J0

159 8

b

161

rZblrakZ Z0Z0ZpZp 0Zpo0ZnA opZ0Z0ZQ 0Z0ZPZ0Z OBMPS0ZP 0O0Z0ZPZ S0Z0Z0J0 a

Double attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ Zpo0Zpop 0o0Z0l0Z Z0ZnZ0Z0 0O0S0Z0Z Z0OPZ0Z0 PZ0LBZPO S0Z0M0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

163 8 7 6 5 4 3 2 1

166

rZ0l0skZ Z0Z0opZp bZ0o0ZpZ Z0oPZ0Z0 0Z0aPO0Z Z0MnA0O0 PO0ZRZBO S0ZQZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0l0ZkZ ZbZ0Z0op 0opZ0O0s oBapO0Z0 0Z0ZpZ0Z OPZ0O0Z0 0A0ZQZPO Z0S0ZRJ0 a

164 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

168

0Z0s0m0Z ZRZPZ0j0 0Z0Z0ZpZ Zpo0Z0Z0 0ZpaPlBZ Z0Z0Z0Z0 0O0ZQZKZ S0Z0Z0Z0 a

c

0Z0s0ZkZ o0Z0Z0ap 0o0Z0ZpZ Z0Z0ZpZ0 0Z0OnZ0Z OqZ0ZNOP 0A0ZQO0J Z0ZRZ0Z0

165 8

b

167

0ZrZ0ZkZ Z0Z0Zpo0 0ZbZpZ0o Z0Z0SPZ0 0ZpMPZ0Z Z0Z0L0Z0 0l0Z0ZPO Z0Z0Z0J0 a

Deflection

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0skZ0s opZ0opap 0Z0Z0o0Z l0ZNZ0Z0 0Z0L0O0Z Z0Z0Z0Z0 POPZ0ZPO Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

169 8 7 6 5 4 3 2 1

172

rZ0Z0skZ o0l0ZpZp 0ZpZ0ZpZ Z0apm0Z0 0ZPZ0L0Z ZBZ0Z0Ob PO0M0O0O S0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0skZ Z0ZQZNZp 0Z0ZnOpZ Z0opZ0Z0 0Z0ZqZ0Z Z0O0Z0ZP 0Z0Z0ZPZ Z0Z0ZRZK a

170 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

174

0Z0s0l0j oQZ0ZBZp 0Z0Z0Z0Z Z0ZRZ0o0 0Z0Z0ZbZ Z0Z0Z0O0 PO0ZrZ0O Z0Z0ZRJ0 a

c

0Z0Z0ZrZ L0ZbjpZ0 0o0o0Z0S Z0oPZ0oB 0Z0ZpZ0Z Z0Z0O0Z0 0Z0ZKOPZ Z0l0Z0Z0

171 8

b

173

0Z0Z0skZ S0Z0o0Zp 0Z0aqZpA ZpZ0Z0Z0 0O0ONmPZ Z0O0ZQZP 0Z0Z0Z0Z Z0Z0Z0J0 a

Deflection

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZrZ Zplko0Zp pZbo0Z0Z Z0Z0ZNZp 0Z0LPO0Z Z0O0Z0Z0 PO0Z0ZrO S0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

175 8 7 6 5 4 3 2 1

178

0Z0Z0s0j Z0ZbZ0o0 pZ0Z0Z0o ZpSpS0Z0 0O0O0ZqZ O0Z0ZpO0 0Z0Z0LnO ZBZ0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZbZ0skZ opZ0Z0op 0Z0ZpZ0Z l0Z0mpZ0 0Z0ZBA0Z Z0Z0Z0O0 PO0Z0O0O Z0SQZRJ0 a

176 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

180

rm0lka0Z opo0o0Zr 0Z0Z0ZpZ Z0Z0MbAp 0ZBOpZ0Z Z0Z0Z0Z0 POPZ0ZPO S0ZQZRJ0 a

c

0Z0l0s0Z s0ZBZ0jp pZ0aQopZ mpZPZ0Z0 0Z0Z0Z0A Z0Z0ZPZ0 0Z0Z0ZPO Z0S0S0J0

177 8

b

179

rZbZ0Zks o0mplpZp 0o0Z0ZpA Z0Z0o0Z0 0ZPZNZ0Z Z0Z0Z0L0 PZ0S0OPO Z0ZRZ0J0 a

Deflection

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0aRs0ZkZ Z0Z0Zpo0 pZ0ZpZpZ l0Z0Z0Z0 0o0ZNO0Z Z0Z0O0ZP PZ0ZQZPZ Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

181 8 7 6 5 4 3 2 1

184

0Z0ZrZ0j S0Z0Z0Zp 0Z0m0s0l Z0ZQo0Z0 0Z0Z0o0Z Z0Z0ZPZ0 PO0ZNZ0O Z0Z0Z0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0s0ZkZ Z0Z0lpa0 pZ0ZnZpZ ZpZ0mpZ0 0Z0Z0Z0Z ZPZ0OPM0 PA0ZQZNO ZRZ0Z0J0 a

182 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

186

0Z0l0skZ s0Z0Z0o0 0ZbonZPZ o0oNZpZ0 PZPmPZ0o Z0ZPA0ZP 0Z0Z0L0J ZRZBZRZ0 a

c

0Z0ZkZ0Z o0O0Z0o0 0ZqZno0o Z0ZNZ0Z0 0Z0Z0Z0Z ZQZ0ZPO0 0Z0Z0ZKO Z0Z0Z0Z0

183 8

b

185

rZ0ZrZkZ ZpZ0ZpZp pZ0a0ZpZ Z0ZPZ0Z0 0Z0L0lPZ Z0Z0Z0ZP PO0Z0OBZ S0ZRZ0J0 a

Deflection

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0Z Z0ZrZnjp pl0O0o0Z ZpZ0sPoP 0ZpSNZPZ Z0Z0S0Z0 0O0L0OKZ Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

187 8 7 6 5 4 3 2 1

190

rZnZnskZ o0Z0ZpZp 0l0Z0ZpL Z0o0oNZ0 0oBZPZPZ Z0Z0ZPZ0 POPZ0Z0O ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

nZrZrZkZ SQZ0Zpap 0Z0AplpZ ZPZ0Z0Z0 0Z0o0Z0Z Z0Z0M0O0 0Z0ZPO0O Z0ZRZ0J0 a

188 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

192

0Z0Z0Z0Z Z0s0SpZk 0Z0Z0ZpZ Z0AQZ0Z0 0ZPZ0Zqm Z0Z0Z0Z0 0Z0Z0O0Z Z0Z0ZKZ0 a

c

0Z0s0ZkZ ZpZ0ZpZ0 pZ0ZpZpZ Z0O0Z0ZR qZ0Z0Z0Z Z0Z0ZRL0 0Z0s0Z0O Z0Z0ZBZK

189 8

b

191

0Z0Z0Z0Z Z0Z0Z0ok 0ZQZ0Z0o Z0Z0ZpZ0 0Z0Z0Oqm ZPZrZ0Z0 PZ0Z0ZPO Z0A0ZRJ0 a

Deflection

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrZkZ opo0Zpap 0Z0o0ZpZ Z0Z0Z0l0 0ZPZPm0Z Z0M0APZ0 PO0L0ZPO S0ZBZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

193 8 7 6 5 4 3 2 1

196

rZbs0Z0j opZ0lpop 0ZpZ0Z0M Z0Z0ZpZ0 0ZPO0Z0Z Z0Z0Z0Z0 PO0L0ORO Z0JRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Zrs0ZkZ ZbZ0Zpop pa0ZpZ0Z ZpZ0O0Z0 0O0ZBOnl O0M0Z0O0 0A0ZQZ0O S0Z0ZRZK a

194 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

198

0ZrZ0Z0S o0ZkmrS0 0o0o0Z0Z Z0o0o0o0 0ZPZBZ0Z Z0OPZPZ0 PZ0Z0ZKZ Z0Z0Z0Z0 a

c

ks0ZrZ0Z oRo0Z0op QZPZ0Z0Z Z0Z0Z0Z0 Po0ZpZ0Z Z0ZpZ0ZP 0Z0Z0lPJ Z0S0Z0Z0

195 8

b

197

rZ0ZkZ0s Z0ZbZpop pZ0Z0Z0Z ZpaBZPZq 0Z0ZPZnZ Z0OQA0Z0 0O0Z0ZPO SNZ0ZRJ0 a

Deflection

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0j0Z obo0ZrZ0 0o0Z0Z0o Z0Z0S0oP 0OPZ0Z0Z Z0Z0Z0Z0 PJBL0l0Z Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

199 8 7 6 5 4 3 2 1

202

0s0ZrZkZ Zbo0ZpZp pZqZ0ZpA Z0Z0Z0Z0 Po0m0Z0Z ZBZ0SPL0 0ZPZ0ZPO Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0Z0Z0j o0o0Z0op 0Z0Z0Z0Z Z0Z0Z0Z0 0Z0ZpZ0Z O0O0S0Z0 0O0L0lrZ Z0JRZ0Z0 a

200 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

204

0Zrl0skZ Z0Zbapop pZ0Zpm0Z ZpZpM0Z0 0ZnO0A0Z O0MBO0ZQ 0O0Z0OPO Z0S0ZRJ0 a

c

rZ0Z0skZ ZpabZ0op pZpZpZ0l Z0OpZ0Z0 0O0OnZ0Z O0Z0A0ZP 0ZQZBOPZ S0Z0ZRMK

201 8

b

203

0Z0Z0ZkZ Z0Z0Zpop 0Z0ZpZ0Z o0a0m0Z0 PoPZPl0Z Z0Z0ZbAP 0Z0ZBZ0J S0Z0SQZ0 a

Deflection

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0Z o0Z0l0jp 0o0ZPmpZ Z0ZpL0Z0 0ZpO0Z0Z ZnO0Z0M0 0A0Z0ZPO Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

205 8 7 6 5 4 3 2 1

208

0ZrZ0ZkZ M0Z0ZpZp 0Z0Z0ZpZ S0ZbL0Z0 0o0Z0Z0l Z0Z0Z0Z0 0O0Z0ZPO Z0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0Z0akZ Z0ZbZqZp pZ0Z0ZpZ Zro0Z0ZR 0ZPZ0M0Z O0A0Z0O0 0OQZ0Z0O Z0JRZ0Z0 a

206 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

210

rZ0s0ZkZ ZpZ0Zpop 0Z0a0Z0Z oPZnZ0Zq 0Z0MpZ0Z O0Z0ObOP 0ARZBO0J Z0S0ZQZ0 a

c

0Z0Z0Z0Z Z0Z0opak 0Z0Z0ZpZ Z0SPOqZn 0ZNZ0Z0Z S0Z0ZPZp 0Z0A0ZPO Z0Z0ZKZ0

207 8

b

209

kZ0sRZ0Z opl0Zpa0 0m0s0Z0o A0o0ZQZP 0ZpZ0Z0Z O0Z0ZNO0 KO0S0O0Z Z0Z0Z0Z0 a

Deflection

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0ZbL Zpo0ZkZp pZ0Z0MpZ Z0o0ZrO0 0Z0Z0Z0l Z0ZPSpSP POPZ0O0Z Z0Z0Z0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

211 8 7 6 5 4 3 2 1

214

0Zks0Z0s opo0lpo0 0ZpZ0Z0Z Z0a0ZbZ0 0ZPZpOPZ ZPZ0O0o0 PAQOBZ0Z SNZ0J0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0l0ZkZ Z0Zrspo0 po0o0Z0o Z0ZbZ0Z0 PONOpL0Z Z0Z0O0ZP 0Z0Z0OPZ Z0S0ZRJ0 a

212 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

216

0sqZks0Z o0Zbo0a0 0Z0o0Z0o ANoPm0o0 pZPZ0ZPZ S0Z0Z0ZP 0ZBZQO0Z Z0Z0ZRJ0 a

c

rZ0Z0s0Z opZ0Z0jp 0ZpMbZ0Z Z0O0ZRZn 0Z0Z0Z0Z ZPZ0l0OP PZQZNZ0J Z0Z0ZRZ0

213 8

b

215

0Z0Z0skZ Z0Z0Zpap pZ0o0ZrZ l0ZPZ0Z0 0Z0A0Z0Z Z0Z0ZQZ0 PZ0Z0ZPO Z0S0ZRZK a

Deflection

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0Z obZ0Z0jq 0o0o0o0Z ZPo0s0o0 PZQmPZ0Z Z0M0ZPO0 0Z0Z0ZBs ZRZ0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

217 8 7 6 5 4 3 2 1

220

rZblrZkZ Z0Z0Zpap 0Z0o0mpZ o0ZPZ0A0 0S0ZPZ0Z ZPZ0ZPM0 0Z0LBZPO S0Z0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0ZrZ o0ZqZpj0 0onZpZpZ Z0opO0O0 0Z0O0LpS Z0O0Z0Z0 PO0M0Z0Z Z0Z0ZRJ0 a

218 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

222

rjbZ0Z0s Z0Z0SpZp pZPS0o0a Z0Z0Z0Z0 0Z0Z0Z0Z Z0Z0ZNZ0 PZ0Z0OPO Z0Z0Z0J0 a

c

0Z0ZrZrj Z0onZ0a0 0o0o0l0o Z0ZPZpZ0 0OPZpO0Z Z0Z0Z0ZR 0ZQZBZPO Z0A0ZRJ0

219 8

b

221

0Z0Z0ZkZ Z0Z0Z0o0 0ZqZpZPZ Z0Z0OnZQ 0Z0Z0Z0Z Z0Z0ZRA0 0Z0Z0Z0J Z0s0Z0Z0 a

Decoy

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0Z ZpZ0ORZ0 pZ0Z0Z0j Z0sNl0Zp 0Z0Z0Z0Z JPZ0Z0Z0 PZ0Z0ZRO Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

223 8 7 6 5 4 3 2 1

226

0Z0Z0ZRZ o0Z0ZrZ0 0o0Z0s0o Z0Z0Lbok 0O0Z0Z0Z O0ZqZ0O0 0Z0Z0S0J Z0A0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0s0Z0j o0Z0Zqop 0o0Z0Z0Z Z0O0L0m0 0ZPZ0M0Z Z0Z0Z0O0 PS0Z0O0O Z0Z0Z0ZK a

224 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

228

rZ0Z0s0Z Z0Z0Z0jp 0ZplpopZ obS0Z0Z0 0Z0O0Z0Z Z0Z0LNZ0 PO0Z0OPO Z0S0Z0J0 a

c

0Z0ZrZ0Z opZns0Z0 0ZpZ0Z0o Z0Z0oka0 0Z0ZRO0Z ZPANZ0O0 PZPZKZ0Z Z0ZRZ0Z0

225 8

b

227

rZ0s0ZkZ opZbopap 0Z0l0ZpZ Z0ZPm0Z0 0ZBZPZ0O ZQZ0APZ0 PZ0ZNZPZ Z0S0J0ZR a

Decoy

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ ZpZ0lpo0 0mpZpZpZ o0Z0M0Z0 0ZPONZ0Z aPZ0Z0ZR 0Z0ZQOPO Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

229 8 7 6 5 4 3 2 1

232

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8 7 6 5 4 3 2 1

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230 8 7 6 5 4 3 2 1

b

c

d

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8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

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b

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a

b

c

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234

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231 8

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233

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Decoy

c

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8 7 6 5 4 3 2 1

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b

c

d

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f

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h

Laszlo Polgar

Chess Middlegames

235 8 7 6 5 4 3 2 1

238

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b

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8 7 6 5 4 3 2 1

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236 8 7 6 5 4 3 2 1

b

c

d

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8

7 6 5 4 3 2 1

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h

b

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a

b

c

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240

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237 8

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239

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Decoy

c

d

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g

h

8 7 6 5 4 3 2 1

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b

c

d

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f

g

h

Laszlo Polgar

Chess Middlegames

241 8 7 6 5 4 3 2 1

244

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b

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242 8 7 6 5 4 3 2 1

b

c

d

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7 6 5 4 3 2 1

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a

b

c

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246

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243 8

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Decoy

c

d

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8 7 6 5 4 3 2 1

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b

c

d

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Laszlo Polgar

Chess Middlegames

247 8 7 6 5 4 3 2 1

250

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248 8 7 6 5 4 3 2 1

b

c

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8

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a

b

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252

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249 8

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251

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Decoy

c

d

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f

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h

8 7 6 5 4 3 2 1

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b

c

d

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h

Laszlo Polgar

Chess Middlegames

253 8 7 6 5 4 3 2 1

256

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254 8 7 6 5 4 3 2 1

b

c

d

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f

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8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

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b

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a

b

c

d

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258

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255 8

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Decoy

c

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8 7 6 5 4 3 2 1

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b

c

d

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Laszlo Polgar

Chess Middlegames

259 8 7 6 5 4 3 2 1

262

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260 8 7 6 5 4 3 2 1

b

c

d

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f

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8

7 6 5 4 3 2 1

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b

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f

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h

a

b

c

d

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h

264

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261 8

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263

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Decoy

c

d

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h

8 7 6 5 4 3 2 1

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b

c

d

e

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g

h

Laszlo Polgar

Chess Middlegames

265 8 7 6 5 4 3 2 1

268

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b

c

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8 7 6 5 4 3 2 1

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266 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

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h

a

b

c

d

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f

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h

270

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267 8

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Decoy

c

d

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f

g

h

8 7 6 5 4 3 2 1

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b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

271 8 7 6 5 4 3 2 1

274

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c

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8 7 6 5 4 3 2 1

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272 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

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b

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a

b

c

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276

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273 8

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Clearance

c

d

e

f

g

h

8 7 6 5 4 3 2 1

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b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

277 8 7 6 5 4 3 2 1

280

rZ0l0skZ opZ0apop 0ZnZ0Z0Z Z0O0Z0Z0 NZ0onZ0Z Z0Z0Z0O0 POQAPONO S0Z0ZRJ0 a

b

c

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f

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8 7 6 5 4 3 2 1

h

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278 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

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h

a

b

c

d

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h

282

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279 8

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Clearance

c

d

e

f

g

h

8 7 6 5 4 3 2 1

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b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

283 8 7 6 5 4 3 2 1

286

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b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

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284 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

288

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285 8

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287

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Clearance

c

d

e

f

g

h

8 7 6 5 4 3 2 1

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b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

289 8 7 6 5 4 3 2 1

292

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b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

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290 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

294

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291 8

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293

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Clearance

c

d

e

f

g

h

8 7 6 5 4 3 2 1

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b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

295 8 7 6 5 4 3 2 1

298

rZ0lns0Z ZpZbZ0ak nZ0o0Z0o o0oPZpZ0 0ZPZpO0M OPM0A0OP 0Z0L0Z0Z ZRZ0SBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0skZ opo0Z0ap 0Z0o0Z0Z Z0ZPobZ0 0ZPZ0Z0l Z0ZBZPZ0 PO0Z0M0O S0ZQZRJ0 a

296 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

300

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297 8

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299

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Clearance

c

d

e

f

g

h

8 7 6 5 4 3 2 1

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b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

301 8 7 6 5 4 3 2 1

304

rZ0Z0skZ opo0Z0Z0 0Z0Z0aqZ Z0oPZ0o0 0ZPZ0oBZ Z0Z0Z0Z0 PO0Z0OPZ S0ZQZKZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

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302 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

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f

g

h

306

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c

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303 8

b

305

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Clearance

c

d

e

f

g

h

8 7 6 5 4 3 2 1

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b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

307 8 7 6 5 4 3 2 1

310

0Z0Z0s0Z Z0l0o0j0 pZ0ZQZpZ Zpo0ZnM0 0Z0a0Z0Z ZPZ0Z0Z0 PZ0Z0ZPO Z0S0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

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308 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

312

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c

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309 8

b

311

rZ0ZbZ0Z oNS0Z0Z0 kZ0Z0Z0Z Z0ZpZnZ0 PZ0o0A0Z Z0O0Z0Z0 0ZPZ0OrO ZRZKZ0Z0 a

Clearance

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zbl0mka Z0o0Z0Zp 0Zpo0Z0L s0Z0ZNoN pZ0OPZ0Z Z0O0Z0Z0 PO0Z0ZPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

313 8 7 6 5 4 3 2 1

316

rZ0Z0skZ Z0ZqZpop pZnZ0Z0Z ZpopO0ZN 0Z0Z0LbZ ZPZ0ZNZ0 0OPZ0OPO Z0Z0SRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrZ0Z Z0Z0ZrZp RZpZ0opZ ZpZbj0Z0 0Z0ZpMPO Z0O0J0Z0 0ZPZ0O0Z Z0ZRZ0Z0 a

314 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

318

rZ0Z0ZrZ o0obl0Zk 0apZnZ0o Z0MpOpZ0 0Z0Z0O0Z ZNZ0A0Z0 POPZ0L0O Z0Z0ZRZK a

c

0Z0Z0ZkZ opZbZrZ0 0Z0O0Z0o Z0ZQZ0o0 0O0ZpZ0Z O0Z0OnZq 0Z0S0O0O Z0ZRZNZK

315 8

b

317

0srmbakZ opZqZ0Zp 0m0ZpOpZ Z0ZpO0L0 0Z0O0ZNZ ZPZ0Z0O0 PA0M0ZBZ Z0Z0ZRJ0 a

Clearance

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0sqs0Z ZbZ0ZpZp pZ0ZnO0j ZpopOQa0 0Z0O0ZPO ZPO0M0Z0 0O0Z0Z0Z S0A0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

319 8 7 6 5 4 3 2 1

322

0Z0Z0s0Z Z0Z0Z0Zk QZ0O0lpo o0Z0S0Z0 0o0Z0Z0Z Z0Z0Z0O0 0Z0ZRZKO Z0Z0ZrZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0m0Z0j ZpZqapZr pZ0Z0ZpZ m0ZpO0Zp 0Z0O0M0Z OPZQZNS0 0Z0Z0ZPO S0A0Z0J0 a

320 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

324

rZ0ZnZrj o0Z0l0Zp 0oRapZ0Z Z0ZpMpZN 0Z0O0O0Z Z0Z0Z0ZR PO0ZQZPO Z0Z0Z0J0 a

c

rZbl0Z0Z o0Z0Zrjp 0ZpZ0o0m Z0OpZPoQ 0Z0O0Z0Z Z0ZBZ0MP PZ0ZRZPZ Z0Z0S0J0

321 8

b

323

0Z0ZrZkZ Zpo0lpo0 0Z0o0Z0o Z0ZPZ0Z0 POPZ0S0Z Z0ZQZ0Z0 RZ0Z0JPO Z0Z0s0Z0 a

Clearance

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0l0s0Z Z0Z0apj0 pZ0ZpZ0Z ZpM0M0mp 0ZpO0Z0Z Z0Z0OpAb POQZ0Z0O ZBZRJ0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

325 8 7 6 5 4 3 2 1

328

0Zrl0s0j o0Z0S0a0 0Z0Z0ZPZ ZpZ0L0Zp 0Z0Z0ZbO ZBZ0ZpZ0 POPZ0ZPZ Z0JRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZbj0ZrZ opo0Z0a0 0Zno0lNo Z0Z0Z0oQ 0ZPZPo0Z Z0Z0Z0O0 PO0Z0ZBO S0A0ZRJ0 a

326 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

330

0l0srZkZ Z0Z0Zpap pobopmpZ Z0m0Z0Z0 0ZPZPZ0Z ZPM0Z0OP PANZROBZ Z0ZRL0J0 a

c

rZ0Z0Z0Z o0ZbZNZ0 nZ0OkZ0o Z0o0Z0o0 0ZpZ0ZPZ O0Z0Z0JP 0ZBZ0Z0Z Z0Z0ZRZ0

327 8

b

329

rZbZ0skZ opZpopap 0lnZ0mpZ Z0Z0Z0Z0 0ZBMPZ0Z Z0M0APZ0 POPL0ZPO S0Z0J0ZR a

Discovered attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ opZ0lpZ0 0ZnZ0m0o Z0ZpZ0o0 NO0a0ZbZ O0Z0ZNO0 0Z0APOBO Z0SQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

331 8 7 6 5 4 3 2 1

334

rZ0Zkl0s o0obZ0Zp 0o0Z0o0Z Z0Z0o0Z0 0ZBmNZ0Z O0Z0Z0Z0 0OPSQO0O Z0JRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rmbs0ZkZ Z0Z0opa0 0l0Z0ZpZ o0o0Z0Z0 Po0MNZ0Z ZBZ0A0Z0 0OPL0OPZ Z0JRZ0ZR a

332 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

336

0Z0s0s0j opZ0Z0op 0Z0Z0Z0Z Z0Z0Z0M0 0Z0ZRZ0Z Z0ZQZ0Z0 POnZ0lPO S0Z0Z0ZK a

c

0ZrZnj0Z Z0Z0lpaQ 0Z0ZbZ0Z ZpZ0SpO0 0Z0ZPZ0Z o0Z0Z0Z0 PAPZ0Z0Z ZKZ0Z0ZR

333 8

b

335

0Zra0skZ Z0Z0Z0op 0Z0o0Z0O Z0ZPoqA0 pZPZQZRZ OpZ0Z0Z0 0O0Z0Z0Z J0Z0Z0S0 a

Discovered attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ Z0o0lnap pZpo0ZpZ Z0Z0ZpZ0 0ZPLPZ0Z ZPM0ZNZP PA0Z0OPZ Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

337 8 7 6 5 4 3 2 1

340

0s0Z0Z0Z Z0j0Z0Z0 0o0ZpZ0o ZQZpOpZ0 0OpO0Z0Z S0Z0Z0O0 0ZPZqZPZ Z0J0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZRZ0Z Z0Z0Zrsk 0Z0o0Z0Z o0ZqZ0Zp PZ0A0Z0Z Z0O0Z0ZP 0O0L0ZPZ Z0Z0Z0J0 a

338 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

342

0Z0s0ZkZ obZrZpo0 0onZ0l0o Z0ZBZ0Z0 0Z0Z0ZQZ O0Z0ZNO0 0O0Z0OPZ Z0ZRS0J0 a

c

0Z0ZrmkZ Z0lnZ0o0 pZ0ZbZ0o Zpo0M0Z0 0ZPZ0Z0Z Z0Z0O0L0 PA0Z0ZPO ZBZ0ZRJ0

339 8

b

341

0Z0s0ZkZ Z0Z0Z0Zp bl0ZpZpZ o0S0OpZ0 Po0Z0Z0O Z0Z0LBZ0 0O0Z0OPZ Z0Z0Z0J0 a

Discovered attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrakZ Z0ZqZpop rZ0Z0Z0Z o0ZpZNZ0 0m0ZPA0Z Z0Z0Z0SP 0O0Z0OPZ Z0ZQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

343 8 7 6 5 4 3 2 1

346

rZbZ0skZ Z0Z0Zpop pZ0SnZ0Z ZpZ0o0l0 0Z0ZPZ0Z O0A0ZQO0 0OBZ0Z0J S0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrskZ oponZ0op 0Zno0Z0Z Z0ZNZ0Zq 0ZPZ0O0Z OPZ0ZRZ0 0A0Z0ZPO S0ZQZ0J0 a

344 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

348

rm0lkZ0s opZ0Zpa0 0Z0ZpZ0o Z0ZbZ0Z0 0ZBZ0Z0Z Z0O0ZNZ0 PZ0A0OPO S0ZQS0J0 a

c

0Zrs0ZkZ ZbZqapop no0ZpZ0Z o0ZpA0Z0 0ZPZ0MnZ OPM0Z0O0 0L0ZPOBO Z0SRZ0J0

345 8

b

347

rZ0ZrZkZ opoqZpop 0a0Z0mnZ Z0ZpZ0A0 0Z0OPZ0Z ZBMQZPZ0 PO0Z0OKO S0Z0Z0S0 a

Discovered attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ opm0a0op 0ZnZbZ0Z Z0Z0M0Z0 0Z0ZNZQZ Z0Z0O0O0 0A0Z0OBO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

349 8 7 6 5 4 3 2 1

352

0s0Z0ZkZ ZqZ0ZpZp 0Z0opZpZ ZbZ0ZnZ0 0L0Z0O0Z ZNZ0Z0Z0 0OPZ0APO Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZrmkZ obZ0Zpo0 0Z0opZ0o ZqZ0Z0AQ 0O0O0Z0Z Z0Z0M0S0 PZ0Z0OPO Z0Z0S0J0 a

350 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

354

0Z0Z0Z0j ZbZrZ0o0 pZ0Z0Z0o ZpZ0lNZ0 0Z0aPZ0Z Z0ZQZ0Z0 PZ0Z0ZPO ZBZRZ0ZK a

c

0Z0ZrZ0j o0Z0Z0lp bo0ZBZpZ Z0ZPZpZ0 0ZnZ0M0Z Z0S0Z0Z0 PL0Z0OPO Z0Z0Z0J0

351 8

b

353

rZqZ0skZ obZ0Zpo0 0o0Z0m0m Z0Z0ZQZp 0OBM0Z0Z O0Z0Z0A0 0Z0Z0OPO Z0SRZ0J0 a

Discovered attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0skZ Z0ZqZ0Zp po0ZpZpZ Z0ZnZ0Z0 PZBSQZ0Z Z0Z0Z0Z0 0O0Z0sPO Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

355 8 7 6 5 4 3 2 1

358

rZ0Z0Z0Z ZplnZ0jp 0ZpZpZpZ o0Z0o0Z0 Pm0ZPs0Z Z0L0ZNMP 0OPZ0OPZ S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rm0s0ZkZ obZ0Zpo0 0o0ZpZ0o l0Z0Z0AQ 0Z0Z0ZRZ Z0ZBZ0Z0 0Z0Z0OPO Z0ZRZ0J0 a

356 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

360

RZ0Z0Z0Z Zpo0Z0ak 0Z0Z0Zpo ZPoNZ0Zn 0ZQo0O0Z Z0ZPZ0O0 0Z0ZqOBJ Z0Z0s0Z0 a

c

0Z0ZrZ0s o0o0Z0j0 0o0Z0ZqZ Z0Z0S0mR 0Z0Z0ZPZ Z0Z0Z0L0 PO0Z0OPZ Z0Z0Z0J0

357 8

b

359

0ZqZrZkZ ZpZnZpZp 0ZpZ0apZ Z0OpZ0Z0 0O0O0OPm Z0ZBZ0A0 0Z0Z0Z0O L0ZNZRJ0 a

Discovered attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZrZ ZpoQSNak 0Z0o0Z0o o0ZPZ0oB 0ZPl0Z0Z Z0ZbZ0O0 PO0Z0ZPJ Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

361 8 7 6 5 4 3 2 1

364

rZ0Z0Z0Z Z0Z0Z0ak 0Z0MRZpo o0ZPZ0Z0 0mPZ0ZqZ Z0Z0ZNZ0 0Z0Z0OPZ ZQZ0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0ZkZ0s Zbl0apop pZ0ZpZ0Z ZpZnZ0Z0 0Z0M0Z0Z ZPZBZ0ZQ PAPZ0OPO Z0ZRZRJ0 a

362 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

366

0Zks0a0s Z0ZnZ0o0 pZ0ZpZ0Z l0ZbZ0O0 No0Z0Z0Z ZPZ0A0ZB PZPL0Z0Z Z0JRZ0ZR a

c

0ZrZ0ZkZ Z0Z0Zqmp pZ0ZpZpZ Z0ZpZ0Z0 0a0M0ZQA Z0Z0Z0Z0 PO0Z0OPO Z0ZRZ0J0

363 8

b

365

rZ0Z0Z0Z ZpZ0orjp pZ0Z0opZ l0m0ZbO0 0ZPL0Z0M Z0M0Z0ZP PO0Z0O0Z Z0JRS0Z0 a

Discovered attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0s0Z o0ZnZ0Z0 bo0ZpZkZ Z0apO0o0 0Z0M0ZNs Z0Z0ZPZ0 PO0Z0AKZ S0Z0S0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

367 8 7 6 5 4 3 2 1

370

rZ0Z0s0Z ZbZ0Z0op 0ZnZ0ZkZ o0Z0ZpM0 0oqO0Z0Z Z0Z0ZQZ0 0O0Z0ZPJ S0A0ZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0Z0l0j o0Z0s0Zp 0Z0L0ZbZ Z0Z0o0SN 0Z0o0Z0O Z0Z0ZPZ0 POPZ0Z0Z Z0JRZ0Z0 a

368 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

372

0ZrZrZkZ ZbZ0ZpZp pZ0Z0ZpZ Zpl0m0Z0 0Z0Z0Z0Z ZPm0Z0ZP PL0ZNOPZ ZBS0SNJ0 a

c

rZ0Z0skZ Z0Z0Zqop 0Z0Z0Z0Z Z0ZQZ0Z0 0o0Z0Z0Z ZPZ0Z0ZP PA0Z0ZPZ Z0Z0S0J0

369 8

b

371

rZ0l0ZkZ ZbZ0Zpap pZ0Z0ZpZ ZpZpm0Z0 0ZpZ0Z0Z O0M0O0ZB 0OQS0OPO Z0Z0ZRJ0 a

Discovered attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZblrZkZ Z0Z0spZp pZ0o0ZpZ Z0ZPZ0Zn 0ZPonO0Z Z0ZBZ0O0 POQZ0ZNO S0A0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

373 8 7 6 5 4 3 2 1

376

0ZrZ0Z0Z ZpZkZpa0 0Z0ZpZpZ ZqZ0O0Z0 pZpO0OPZ O0A0ZQZ0 0O0Z0ZKZ Z0S0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0Z0Z Z0lbZko0 pZ0ZpZpZ Z0ZpS0Z0 0Z0M0O0Z Z0O0Z0LP Ps0Z0ZPJ Z0Z0Z0Z0 a

374 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

378

rZ0Z0skZ ZqZ0Zpo0 pZbo0Z0o ZpZ0ZPa0 0Z0A0ZnZ O0M0Z0S0 BOPL0ZPO Z0Z0ZRZK a

c

0a0Z0ZkZ ZpZ0ZrZ0 pZpZ0o0Z Z0O0Z0oQ PZ0O0Z0Z Z0ZqANZn 0Z0ZROPZ Z0Z0ZKZ0

375 8

b

377

rZbZrZkZ ZpZ0lpap pZ0M0ZpZ Z0oRm0Z0 0ZPZ0Z0Z ZPM0Z0O0 PZQZPO0O S0A0Z0J0 a

Discovered attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

qZ0s0ZkZ abZ0ZpZ0 0Z0ZpZ0A Z0Z0Z0Z0 0ZQZnZpZ Z0Z0Z0O0 0Z0ZBZ0O S0Z0MKZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

379 8 7 6 5 4 3 2 1

382

0ZbZ0s0Z spo0Zpjp 0Z0oqZ0Z Z0oRZ0O0 0ZnZPZNZ Z0O0ZBZ0 0O0Z0L0O ZKZ0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0skZ s0l0ZpZp pZ0ZpL0Z ZbOpZpZ0 0S0Z0Z0Z Z0ZBO0Z0 PZ0Z0OPO ZRZ0Z0J0 a

380 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

384

0ZrZrlnZ Z0Z0Z0ok pZ0oPoRo ZpZ0ZPZQ 0ZpaPZPZ Z0Z0Z0ZR PZBA0Z0O Z0Z0Z0ZK a

c

0Z0sqs0Z o0Z0ZpZk bo0Z0Z0Z m0o0OpZ0 0Z0Z0Z0o Z0ONZBZP PO0ZQZ0J S0ZRZ0Z0

381 8

b

383

0Zrl0skZ obZna0Zp 0Z0Z0ZpZ Z0opZpZ0 0Z0Z0Z0Z ZPA0ONZB PZ0ZQOPO S0ZRZ0J0 a

Opening up the diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0s opZ0Z0j0 0Z0onZpZ l0oBZbZ0 0ZPZ0Z0Z Z0Z0ZNS0 0O0Z0OPZ Z0L0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

385 8 7 6 5 4 3 2 1

388

0Zrl0ZkZ obZ0ZpZp 0o0Z0apA Z0ZPZ0Z0 nZ0Z0Z0Z O0Z0LNZ0 BZ0Z0OPO Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0srakZ Zbl0Zpop po0Z0Z0Z Z0ZpOPZ0 0O0Znm0Z Z0M0LNZ0 PA0Z0ZPO ZBZ0SRZK a

386 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

390

0ZrZ0skZ obl0apop 0o0ZpZ0Z m0Z0Z0Z0 0ZPO0Z0Z O0ZBZNZ0 0A0ZQOPO Z0ZRZRJ0 a

c

rZbZ0skZ opl0Zpop 0Z0ZpZ0Z mBO0m0Z0 PZ0ZPA0Z L0O0ZPZN 0Z0Z0ZPO S0Z0J0ZR

387 8

b

389

0Zrs0j0Z Z0l0apo0 0Z0ZpZ0o m0o0Z0Z0 0Z0OQZ0Z o0A0ZNZP PZ0Z0OPZ Z0SRZ0J0 a

Opening up the diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0Z0skZ obZ0lpop 0Z0ZpZ0Z Z0OnO0Z0 PoBZ0Z0Z ZNZ0ZNZ0 0O0Z0OPO S0ZQJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

391 8 7 6 5 4 3 2 1

394

rZbZ0skZ opZ0Zqa0 nZ0o0Zpo Z0oPZpZ0 0ZPZ0Z0M ZPA0Z0O0 PZQZ0OBO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0sqZ0m Z0o0s0ok 0o0Z0o0o o0o0ZRZP PZ0ZPZ0Z ZPAPZ0L0 0ZPZ0ZPZ Z0Z0ZRJ0 a

392 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

396

nZ0l0s0j Z0Z0apZp 0Z0ZpZ0Z Z0Z0O0o0 0ZpONL0Z Z0o0Z0ZR 0Z0Z0OPO Z0A0Z0J0 a

c

0mblrskZ Z0Z0a0Zp pZRZpZpZ ZpZpO0Z0 0O0L0Z0Z O0Z0ZNZP 0A0Z0OPZ Z0ZBS0J0

393 8

b

395

0ZqsrZkZ obZ0Zpop 0Z0Z0m0Z ZNapM0Z0 0Z0Z0O0Z O0ZQZ0Z0 0APO0ZPO ZRZ0ZRZK a

Opening up the diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zkmns opZ0Z0Zp 0ZpSbopZ Z0A0o0Z0 0Z0ZPZ0Z Z0M0Z0Z0 POPZBOPO Z0JRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

397 8 7 6 5 4 3 2 1

400

rZ0l0Z0j obZ0Z0op 0o0o0ZrZ Z0Z0Zpm0 0O0ZnZ0Z O0ZQO0Z0 0A0ZBOPO Z0ZRMRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZbs0akZ ZplnZ0op pZnopZ0Z Z0Z0Z0Z0 0Z0ZPZ0Z Z0MBZNL0 POPZ0ZPO S0A0ZRZK a

398 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

402

qZ0Z0ZkZ ZrZ0Zpa0 0Z0Z0mbo Z0LPm0Z0 0s0ZPZ0Z ZPM0Z0M0 PZKABZ0O Z0ZRZ0S0 a

c

rZbZrZkZ Zplnapop pZnopZ0Z Z0Z0Z0Z0 0Z0ZPO0Z Z0MBZNL0 POPZ0ZPO S0A0ZRZK

399 8

b

401

0s0Z0ZkZ ZpZqZ0sp 0o0ZbSnL Z0o0O0Z0 0Z0ZPZ0Z Z0ZPZ0O0 PA0Z0ZBZ Z0Z0ZRJ0 a

Opening up the diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0ZkZ Z0a0Zpop pZpZ0Z0s Z0Zpm0Z0 0Z0Z0Z0Z APM0O0O0 PZ0Z0OBO Z0SQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

403 8 7 6 5 4 3 2 1

406

0sbZrZkZ ZpZ0Zpap pZ0Z0ZpZ O0oqO0Z0 0ZNZ0ZPZ Z0OBZ0mP 0Z0Z0Z0J S0AQS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0s0j Zbl0Z0Zp pZ0Z0apZ Z0Zpm0Z0 NO0Z0Z0Z L0OBA0ZP 0Z0Z0ZPZ Z0ZRZRJ0 a

404 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

408

0Z0l0s0j s0mbZ0op 0ZpZ0Z0Z o0OpOpZ0 Po0L0M0a Z0Z0APZB 0O0ZPZ0O Z0ZRZ0SK a

c

0Z0Z0mkZ obs0ZpZ0 0Z0Z0ZpZ Z0MpZ0Z0 0Z0O0Z0Z O0LBl0OP 0Z0Z0ZKZ Z0S0Z0Z0

405 8

b

407

rm0Zka0s ZbZpZ0op po0Zpo0Z Z0Z0ZqZ0 0ZPLNA0Z Z0Z0Z0O0 PO0Z0OBO S0Z0ZRJ0 a

Opening up the diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0ZrZkZ Zbm0Zpap po0l0mpZ Z0oPM0A0 PZBZ0Z0Z Z0M0Z0ZP 0O0L0OPZ S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

409 8 7 6 5 4 3 2 1

412

rZ0s0ZkZ opZ0mpop 0Z0l0Z0Z Z0ZPZ0M0 bZBZ0Z0Z Z0Z0Z0Z0 PZ0L0OPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Zrl0akZ spZ0Zpop pZpZ0Z0Z Z0Z0ORZ0 0Z0Z0ZQZ Z0ZBZ0Z0 POPZ0ZPO S0Z0Z0ZK a

410 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

414

rZblrZkZ opZ0apo0 0ZnZ0Z0o Z0ZnM0Z0 0ZpONA0Z Z0Z0Z0O0 PO0Z0OBO Z0SQZRJ0 a

c

0ZrZ0Z0j obZ0l0ZP 0o0Z0Z0Z Z0ZPo0Z0 0Z0ZpZ0Z ZPZ0S0Z0 PArL0ZPO Z0Z0ZRJ0

411 8

b

413

rmblka0s Z0Z0opZp 0Z0o0mpZ o0ZPZ0Z0 0oPZPZ0Z Z0Z0ZNZ0 0O0M0OPO S0AQJBZR a

Opening up the diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

qZ0Z0Zrs ZbZ0a0j0 po0ZpZpZ Z0o0OpO0 0ZPZ0O0S Z0ABZ0ZR PO0Z0Z0L Z0Z0J0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

415 8 7 6 5 4 3 2 1

418

rZ0ZnskZ o0obZqop 0Z0o0o0Z Z0oPZNZ0 0ZPZPS0Z O0OBZ0Z0 0Z0ZQZPO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

qZ0s0ZkZ obsnZpop 0o0Zpa0Z Z0o0Z0Z0 0ZPO0Z0O ZPZ0ZNO0 PAQZ0OBZ Z0ZRS0J0 a

416 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

420

rZ0Zrj0Z obZ0apo0 0m0Z0Z0o l0oPZBZ0 0o0Z0A0Z Z0Z0ZNZ0 POQZ0OPO S0ZRZ0J0 a

c

rZ0l0skZ opZ0opa0 0Z0onZpL Z0ZRZ0Z0 0ZPZ0ZBZ Z0Z0ARZ0 PO0Z0ZPO Z0Z0Z0J0

417 8

b

419

0Z0Z0sbj o0Z0Z0o0 qm0Z0o0o Z0Z0s0Z0 0ZpMBZ0Z a0O0Z0ZR PZQA0OPO Z0Z0ZRJ0 a

Opening up the diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0s0j ZbZ0Z0Z0 po0Z0Zpo Z0Z0ZpZ0 PZ0M0o0l ZNOBmPZ0 0O0Z0aPO S0L0Z0SK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

421 8 7 6 5 4 3 2 1

424

rZblrZkZ oponapo0 0Z0Z0Z0o Z0O0Z0Z0 0Z0ONZ0Z Z0ZQZNZ0 POBZpZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0akZ Z0ZnZ0o0 pZ0o0l0Z Z0obZPM0 pm0Z0Z0Z Z0Z0S0ZP 0O0Z0OPZ ZBAQZ0J0 a

422 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

426

rZnlbs0Z opo0m0ak 0Z0Z0ZpZ Z0ZPo0Op 0Z0ZPZ0Z ZBM0APM0 PO0Z0ZQZ ZKZRZ0ZR a

c

rZ0l0skZ o0o0ZpZ0 bo0ZpZno m0ZpO0o0 0ZPO0Z0A O0O0ZPZN 0ZQZ0ZPO SBZ0J0ZR

423 8

b

425

rZqZ0skZ opZ0a0ob 0ZponZ0o Z0Z0ZpZ0 0ZPZ0m0Z ZPZPMBZP PA0LPZ0M S0Z0Z0SK a

Opening up the diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0skZ o0l0Zpop 0ZnZ0m0Z Z0o0o0Z0 0ZPZ0Z0Z O0ABOPZ0 0ZQZ0O0O S0ZRZKZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

427 8 7 6 5 4 3 2 1

430

rZbl0skZ opZ0m0ap 0Z0o0ZpZ Z0oPo0Z0 0ZPZPZBZ Z0M0A0Z0 PO0M0Z0O S0ZQJ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0skZ Z0Z0Z0Z0 pZ0Z0lpL ZpZ0Z0Z0 0ZnZRZ0Z Z0O0Z0Z0 0Z0Z0ZBO Z0Z0Z0ZK a

428 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

432

0s0Zrm0j Z0Zbl0op 0Zno0Z0Z Z0Z0oPS0 0o0ZPZ0L ZPZ0ZBS0 0APZNZ0O Z0Z0Z0ZK a

c

0Z0Zkm0s sbo0l0mp 0o0oPZpZ Z0Z0ZpZ0 0ZPM0Z0Z ONZBO0Z0 0Z0Z0OPO S0ZQJ0ZR

429 8

b

431

rZblrZkZ opZnZpZp 0Zpa0mpZ Z0ZpZ0Z0 0Z0O0Z0Z ZQMBONZ0 PO0A0OPO S0Z0ZRJ0 a

Opening up the diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrlrakZ Z0ZnZpZ0 pZ0o0m0o ZpZPZPo0 0Z0A0ZPZ Z0ZQZ0MP POPZ0ZBZ Z0Z0SRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

433 8 7 6 5 4 3 2 1

436

0s0ZqZ0j Zpmbs0op 0Z0o0a0Z o0oPZpZ0 PmPZ0O0Z ZPM0O0ZP 0Z0A0ZQZ ZKMRZBS0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0arl0skZ ZpZ0ZpZp pZ0Z0mpZ Z0mpZQZ0 0Z0Z0Z0Z ZPM0O0ZP PA0ZNOPZ S0ZRZKZ0 a

434 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

438

0Z0s0skZ o0Z0apop 0obZpZ0Z Z0Z0AnZq 0Z0Z0O0Z ZNOBZ0O0 PO0Z0L0O Z0ZRS0J0 a

c

0lrs0ZkZ Z0ZnZpop 0o0ZpZ0Z Z0Z0Z0Z0 baPZ0Z0Z Z0ZBL0MP 0A0Z0OPZ Z0S0S0J0

435 8

b

437

0s0l0skZ ZbZ0opZp 0Z0o0ZpZ ZpmNZ0Z0 0Z0Z0Z0Z ZPZ0Z0O0 PL0ZPOBO S0ZRZ0J0 a

Long diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0akZ ZpZqmbZp 0Z0Z0ZpZ ZPZ0ZpZ0 0Z0A0Z0Z Z0L0Z0OP rZ0ZNOBJ Z0Z0S0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

439 8 7 6 5 4 3 2 1

442

rZbZ0s0j opo0Z0ap 0Zno0Z0Z Z0Z0Znl0 0ZBO0ZpZ Z0O0Z0A0 PO0MQMKO Z0Z0S0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZrZkZ obo0Z0op 0o0oNm0Z Z0ZPZpZ0 0ZPZ0OqO A0OQO0O0 PZ0Z0Z0J Z0Z0SRZ0 a

440 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

444

rZbmrZ0j Z0Z0l0op pZ0SpZ0Z ZpZ0LpZ0 0O0Z0Z0O O0Z0O0Z0 0A0Z0OPZ ZBS0Z0J0 a

c

0Z0Z0ZkZ Z0ZrZ0op 0ZqZ0o0Z Zpa0Z0Z0 0ZpZ0Z0Z O0Z0O0O0 0A0Z0O0O ZQS0Z0J0

441 8

b

443

0Z0Z0Zrj ZboqZ0sp pZpZnZpZ Z0ZpOpZ0 0O0Z0O0Z Z0L0ARZ0 PZPZBZPO Z0ZRZ0ZK a

Long diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

bZ0s0ZkZ o0Z0opZp 0Z0ZnZpZ Z0O0Z0Z0 0Z0Z0Z0Z Z0O0L0O0 PZ0MqO0O Z0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

445 8 7 6 5 4 3 2 1

448

rZbZ0skZ Zpl0Zpop pZ0a0m0Z Z0Z0ZNZ0 0ZBZpZ0Z ZPZ0ZQZ0 PAPZ0OPO S0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Zrm0Z0Z o0Zqo0jp 0o0Z0ZpZ Z0oPZrZ0 0ZPZ0Z0Z Z0Z0A0Z0 PZQZ0OPO ZRZ0ZRJ0 a

446 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

450

rZ0Z0ZkZ Z0o0l0a0 no0o0ZpZ o0mPZrOp 0ZPZpO0O OPM0A0Z0 0J0LBZ0Z Z0ZRZ0ZR a

c

rZ0Z0j0s ZbZ0Z0o0 pZ0lpmBZ Zpm0L0o0 0ZpZ0O0Z Z0M0Z0Z0 PO0Z0ZPO S0A0ZRJ0

447 8

b

449

0Z0srZkZ ZpZqa0Zp pO0Z0ZpZ Z0o0ZpZ0 0Z0ZRL0Z Z0ZPZ0Z0 0OPA0ZPO Z0Z0S0J0 a

Long diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0s0Z o0Zpl0jp 0onZ0Z0Z Z0o0o0Z0 0ZbZ0O0Z Z0Z0L0O0 PA0Z0ZBO S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

451 8 7 6 5 4 3 2 1

454

rZ0Z0ZkZ ZpZ0Zpo0 0o0Z0l0o ZPZbL0Z0 PZ0O0Z0m Z0Z0Z0Z0 0Z0A0OPO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0ZkZ o0Z0Z0Zp 0mpl0ZpZ Z0o0s0Z0 0Z0Z0Z0Z ZPZPZ0O0 PZ0Z0Z0O S0AQS0ZK a

452 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

456

rZrZ0ZkZ Z0Z0SpZp pZ0Z0Z0Z ZbZpZqOp 0o0A0Z0Z Z0Z0Z0Z0 POPL0Z0O Z0J0Z0S0 a

c

0Z0Z0Z0Z j0l0Zpo0 po0spZ0Z Z0ZnZ0Z0 PZ0Z0Z0Z ZRZ0Z0OP 0ZPZQZBZ Z0Z0Z0J0

453 8

b

455

rZ0s0ZkZ obZ0Zpop 0onZpZ0Z ZNO0Z0Z0 PZPZnZ0Z L0Z0O0Oq 0A0ZBO0O S0ZRZ0J0 a

Long diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lrZka Zpm0ZpZp 0Zpo0ZpA Z0Z0obZ0 0OPZ0Z0Z Z0MPZBO0 0Z0LPO0O ZRZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

457 8 7 6 5 4 3 2 1

460

0Z0l0skZ Z0Z0Zpap 0Z0obZpZ o0Z0Z0Z0 0orZBL0Z Z0Z0M0Z0 POPZ0OPO Z0JRS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0skZ ZqZnZpop pZ0Zpm0Z Z0obZ0Z0 0Z0Z0Z0M OPL0Z0O0 0A0ZPOBO Z0ZRZRJ0 a

458 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

462

0ZrZrZkZ opZNobZp qZ0Z0opA m0Z0Z0Z0 0ZnZ0Z0Z Z0Z0Z0OP PZ0ZROBZ L0ZRZ0J0 a

c

0Z0Zbsnj opo0Z0Z0 0Z0o0Z0o Z0ZPZpO0 0ZPZ0A0O Z0l0ZBZ0 PZ0Z0L0Z Z0Z0S0ZK

459 8

b

461

0Z0s0Zrj Z0lnobZp 0Z0Z0opZ Zpo0Z0Z0 0O0APOBZ Z0Z0Z0ZR 0Z0Z0LPO Z0S0Z0J0 a

Long diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

qZ0ZrZkZ o0Z0ZpZp 0Z0L0ZpZ ZPZ0Z0Z0 0Z0Z0Z0Z A0Z0Z0Z0 bZ0Z0OPO S0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

463 8 7 6 5 4 3 2 1

466

0Z0a0Zrj o0ZrZpZp 0Z0l0o0L ZpZbSPo0 0ZpO0ZNZ Z0Z0Z0O0 POPZ0A0O Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZbZqskZ o0o0Z0a0 0o0o0Z0Z Z0ZPOpZ0 0ZPZPZ0Z ZnM0ApZ0 PO0Z0O0Z S0ZQJ0S0 a

464 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

468

rZbZnskZ Z0Z0l0ap 0ZpZ0Z0Z o0m0opZ0 0Z0Z0Z0Z O0M0ZNZ0 0A0Z0OPO S0ZQSBJ0 a

c

0ZrZ0s0j Z0Zqapop po0ZbZ0Z ZNZpO0Z0 PZ0A0Z0Z Z0O0Z0S0 0O0L0ZPO Z0Z0ZRJ0

465 8

b

467

0Z0ZrskZ lpZnZ0Zp 0Z0Z0ZpZ o0oPZ0Z0 0Z0ZRZ0Z ZPZ0Z0ZP PA0Z0OPZ Z0ZQZBJ0 a

Long diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ Z0Z0Zpo0 0LbS0Z0o ZpZ0m0Z0 0O0ZpZ0O Z0Z0Z0O0 0ZPZ0OBZ l0ZNZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

469 8 7 6 5 4 3 2 1

472

0ZrabZkZ l0ZnZpo0 0Z0ApZ0o o0o0Z0Z0 NZPZ0Z0Z ZPZRZ0O0 PZ0Z0OBO Z0ZQZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0s0skZ Z0l0Z0o0 0Z0Z0Z0Z ZpZbo0A0 0Z0Z0Z0Z OPZ0Z0O0 0Z0ZQZ0O S0Z0S0J0 a

470 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

474

0j0Z0Z0s o0ZrZpZ0 0o0apo0Z ZPl0Z0Z0 RZBZ0Z0Z Z0O0Z0O0 0O0ZQO0O S0Z0Z0J0 a

c

0Z0srZkZ ZbZpmpZp pl0A0ZpZ Z0o0ZpZ0 0ZPZ0Z0M O0L0O0Z0 0O0Z0OPO Z0JRZ0ZR

471 8

b

473

0Z0s0Z0Z ZbZ0ZpZp pZ0Zpj0Z ZpZ0ZqZ0 0Z0Z0O0Z ZBZ0Z0O0 POPZQZ0J Z0Z0Z0S0 a

Long diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0skarZ ZbZnZpZp 0l0Zpo0Z oBZ0Z0ZQ Po0M0Z0Z Z0Z0O0O0 0O0Z0O0O S0ARZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

475 8 7 6 5 4 3 2 1

478

0Z0Z0skZ s0Z0lpop 0oPZ0mbZ o0Z0Z0Z0 0Z0Z0Z0Z O0Z0O0ZB 0A0L0O0O Z0S0J0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZkZ0Zrs Zbo0lpZ0 0a0Z0Z0Z ZpZ0o0Zp 0Z0ZnZ0Z ZBO0ZNZ0 0O0ZQOPO SNZ0ZRJ0 a

476 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

480

0Z0Z0ZkZ opL0Z0op 0ZnZ0Z0Z Z0Z0ZpZ0 0Zbs0MqZ Z0Z0Z0Z0 PO0Z0S0O S0Z0Z0ZK a

c

rZ0Z0skZ obo0l0op 0onZpZ0Z Z0Z0OpZ0 0Z0O0m0Z Z0MBZNZ0 PO0L0OPO S0Z0ZRJ0

477 8

b

479

0Z0ZrskZ o0Z0Z0ap 0Zpo0ZqZ Z0mPZpZ0 0ZbZpOPA Z0Z0Z0ZP POBL0M0Z Z0J0S0ZR a

Long diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrmkZ Zpl0apop pZbo0Z0Z O0Z0ZNO0 0Z0ZPZ0Z Z0MPA0ZQ 0O0Z0Z0O S0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

481 8 7 6 5 4 3 2 1

484

rZ0s0ZkZ obZ0a0Zp 0oqZ0ZpZ Z0Z0ApZ0 0Z0Z0O0Z ZPM0m0L0 PZ0Z0SPO SNZ0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZbZ0s0j Z0l0Zpop pZ0Z0ZrZ Z0o0Z0Z0 0ZBZPZ0Z Z0L0ZPZP PZ0Z0O0Z A0Z0Z0SK a

482 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

486

rZ0ZRakZ ZpZ0ZpZp 0Zpl0ZpZ Z0Z0L0Z0 0ZPMnZ0Z ZPZ0Z0ZP rA0Z0OPZ Z0Z0ZRJ0 a

c

bZrs0akZ Z0l0Zpop po0o0m0Z Z0Z0oPZ0 PZPZPZ0Z ZPMQZ0Z0 0ANZ0ZPO Z0Z0SRZK

483 8

b

485

0Z0Z0Zrj Z0Z0ZRap 0o0o0ZpZ o0o0Z0On 0ZPZBZ0Z ZPlPZ0ZP PZ0Z0LKZ Z0A0Z0Z0 a

Long diagonal

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZkZ o0Z0Z0a0 0o0Z0opZ Z0ZpZ0Z0 0Z0ZrO0Z O0mQZNZ0 0JPZ0ZPZ Z0Z0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

487 8 7 6 5 4 3 2 1

490

0Z0Z0ZkZ o0l0ZpZp 0s0ZnZpZ M0Zps0Z0 0ZPZ0Z0Z Z0L0O0Z0 0Z0Z0OPO ZRZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrZ0s Z0o0ZpZ0 pZkapZ0Z OpZnZpZp 0O0O0Z0Z Z0O0A0O0 0S0J0ONO Z0ZRZ0Z0 a

488 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

492

bjrZnZ0s Z0ZqapZp pZ0opZpZ ZpZ0Z0O0 0O0MPO0Z O0MPZ0Z0 0Z0Z0L0O ZKS0S0A0 a

c

0Z0ZrZ0Z o0lnskZp 0o0ZpZpZ ZPZ0Z0o0 0Z0A0O0Z Z0O0ZQZ0 0Z0ZRZ0O Z0Z0S0J0

489 8

b

491

0Z0Z0Z0s Zblpjpo0 pZ0ZpZ0Z Z0Z0Z0Z0 0o0ZPO0s Z0Z0L0ZP POPZ0ZPZ S0ZNZRJ0 a

Opening up a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZrZ Z0Z0jpZ0 pZbSpo0Z Zps0O0Z0 0Z0Z0a0o OBO0M0Z0 0O0Z0ZPO ZKZRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

493 8 7 6 5 4 3 2 1

496

rmbZ0Z0s ZpZ0j0op 0o0Z0o0Z Z0Z0M0Z0 0ZBZ0Z0Z a0Z0A0Z0 PZ0Z0OPO J0ZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZrZ0skZ onl0o0Zp 0o0o0ZpZ Z0ZPZpZ0 0ZPZ0Z0Z ZPZ0Z0O0 PZ0L0OBO S0Z0S0J0 a

494 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

498

0sbZ0Z0s Z0Z0Z0op 0o0j0o0Z Z0ZPo0Z0 RZPZPZ0Z Z0Z0Z0Z0 0Z0ZBZPO ZRZ0Z0J0 a

c

rZrZ0ZkZ Z0ZnlpZp 0o0ZpZpZ o0ZpO0Zn 0Z0O0O0O O0ABZ0Z0 0O0L0O0Z Z0J0Z0SR

495 8

b

497

rZ0ZbZ0Z o0Z0jpaN 0Z0ZpMpZ lPZ0Z0Z0 0Z0A0ZPZ O0Z0OPZ0 0OrZ0Z0Z ZKZRZBZR a

Opening up a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0s0ZkZ o0Z0Zpop 0lpZ0Z0Z Z0Z0ObZ0 0Z0a0O0Z ZPO0ZNZ0 PZ0AQZPO Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

499 8 7 6 5 4 3 2 1

502

0Z0Z0Z0Z o0Z0ZkZ0 PZ0Z0o0Z Z0a0o0Z0 0Z0ZbZNZ ZPZ0ZqOQ 0ZrZ0A0O Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZkZ0s0Z opZrZpa0 0ZbO0Z0o Z0ZpZQo0 0Z0ZNO0Z l0Z0O0O0 0Z0ZBJPZ ZRS0Z0Z0 a

500 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

504

rZ0Z0j0s ZnZblpZ0 0o0o0m0Z Z0oPo0op 0OPZ0Z0Z Z0Z0O0A0 0L0MBOPO Z0S0ZRJ0 a

c

0Z0ZkZ0Z l0Z0mra0 pZpA0Z0Z ZpZ0opop 0Z0Z0Z0Z Z0OQZPZP POBZ0ZPZ Z0ZRZ0ZK

501 8

b

503

0ZrZ0lkZ o0M0ZpZ0 0o0Z0LpZ m0oRZ0Z0 0Z0Z0ZpZ Z0Z0O0Z0 PO0Z0O0O Z0Z0Z0J0 a

Opening up a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0snZ Z0Z0abj0 0Z0Z0o0o opZ0oPZ0 0m0oPZPM ZPoPZ0J0 PZPAQMBS Z0Z0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

505 8 7 6 5 4 3 2 1

508

rZ0Z0snl Z0ZbZ0j0 0o0ZpZpZ oPZpOpMp 0Z0Z0O0L Z0OBZ0ZR 0O0Z0ZPO Z0Z0Z0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0Zrj Z0obZ0Z0 no0o0l0Z o0ZPo0mp 0ZPZPo0Z OPLNZPZ0 0Z0ZBM0O S0Z0Z0SK a

506 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

510

0Zks0a0s oplbZ0o0 0ZnZpZ0o Z0ZpOpZ0 0Z0O0L0O Z0MBZNZ0 PO0Z0OPZ S0Z0ZRJ0 a

c

rZ0l0s0j Z0ona0op pZnobo0Z ZpZNo0Z0 0Z0OPZ0Z Z0O0ZNZP POBZ0OPZ S0AQS0J0

507 8

b

509

rZ0s0ZkZ ZbZ0lpap pZpo0mpZ ZpZ0m0Z0 0OPAPZ0Z O0M0ZNZ0 0ZQZ0OPO Z0ZRSBJ0 a

Opening up a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0l0skZ opZ0o0ap 0Z0o0ZpZ Z0oPZ0Z0 0mPZpZ0Z ZPM0Z0Ob PZ0LPONO S0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

511 8 7 6 5 4 3 2 1

514

rZ0ZkZ0s opo0Zpop 0Z0Z0Z0Z Z0apORl0 0Z0Z0ZPZ ZBZpZ0O0 POPO0ZPZ SNAQZ0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZbZ0skZ opl0m0op 0Z0ZpZ0Z Z0opOpZ0 0ZnO0Z0Z O0OBZNZQ 0ZPA0OPO S0Z0J0S0 a

512 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

516

rZbZ0j0s o0ZnZpo0 0l0ZpZ0Z Z0opO0A0 0a0M0L0O Z0M0Z0Z0 POPZ0O0Z S0Z0J0S0 a

c

0ZrZ0Z0j o0s0Z0Z0 0o0ZpZ0o mPZpOpZq 0Z0L0OpZ ZPZBZ0O0 RZPZ0ZKO S0Z0Z0Z0

513 8

b

515

0ZbmrZkZ Z0Z0Zpop pZ0Z0Z0Z Z0o0l0Z0 0Z0ZBZ0Z S0Z0Z0Z0 0O0ZQOPO Z0A0Z0J0 a

Opening up a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrs0ZkZ opZblpop 0ZnZ0m0Z Z0o0o0M0 0ZPZ0Z0Z OPA0O0Z0 0ZQZBOPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

517 8 7 6 5 4 3 2 1

520

rmbZ0ZkZ ZpZ0ZpOp pZ0ZpZ0L Z0Z0l0Z0 0a0s0Z0Z ZRM0Z0Z0 PZPZBZPO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0jqs0ZrZ opo0Z0Z0 0Zna0o0Z ZQZNZ0ob PZ0O0Z0Z ZRM0O0Z0 0Z0Z0OPZ Z0Z0ZRZK a

518 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

522

0ZrlnskZ opZba0op 0ZnZpZ0Z Z0ZpMpZ0 0Z0O0A0Z Z0MBO0ZQ PO0Z0OPO S0Z0ZRJ0 a

c

bZrZ0skZ o0l0Zpop PopZnZ0Z Z0ZnM0Z0 0ZBONZQZ S0Z0Z0Z0 0O0Z0OPO Z0Z0ZRJ0

519 8

b

521

0sbZkZrZ Zpl0Zpo0 pZ0ZpZ0o Z0m0O0Z0 0Z0M0Z0L Z0Z0Z0Z0 POPZBZPO Z0JRZRZ0 a

Opening up a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0skZ S0Z0L0Zp 0ZpZ0ZrZ Z0ZpZ0aq 0Z0O0ZpZ Z0ZPZ0Z0 PZRZ0OBZ Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

523 8 7 6 5 4 3 2 1

526

rZ0ZqZ0s Z0o0j0o0 pZ0Z0ZpZ ZpZ0MbZ0 0O0ZnA0Z O0Z0Z0Z0 0ZPMQaPO S0ZRZ0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZbZ0skZ opZnZpop 0Z0ZpZ0Z l0ZNZ0a0 0o0O0Z0O Z0Z0ONZ0 PZQZ0OPZ S0Z0JBZR a

524 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

528

0Z0Z0a0Z opZ0s0ok 0Zpo0oRo Z0Z0sPZN 0ZPZPZ0Z ZPZ0Z0L0 PZ0l0ZPO Z0Z0ZRZK a

c

rZ0Zka0s Zpo0Z0o0 pZ0Zbo0o Z0Z0ZqZ0 0Z0LNZ0Z ZPZ0Z0Z0 PAPZ0ZPZ Z0ZRS0J0

525 8

b

527

0ZkZ0Z0s opZ0Zpop 0ZpZ0m0Z Z0Z0ZPAb PZ0ZPZ0Z Z0MrZ0ZP 0OBZ0aPZ S0Z0S0ZK a

Opening up a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0j0Z Zpo0sPop 0a0s0Z0Z oPZpZ0l0 PZ0O0M0Z L0Z0ORZ0 0ZRZ0ZPO Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

529 8 7 6 5 4 3 2 1

532

rZ0ZnskZ o0Z0Z0Z0 0o0ZpZpL m0o0lpZ0 0Z0Z0Z0A O0O0Z0ZR 0Z0ZNOPO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0lkZ0s ZbZnapo0 pZ0opZ0Z ZpZ0Z0Zn PO0MPO0o Z0MBZQZ0 0ZPA0ZPO S0Z0ZRZK a

530 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

534

0ZkZ0Z0s Zbl0ZpZ0 pZ0MpapZ ZpZ0Z0Z0 0Z0Z0Ons ZNZ0Z0Z0 POPZQZPO Z0ZRZRAK a

c

rZ0l0Z0j opZ0M0op 0Zpo0Z0Z Z0Z0Z0ZP 0ZBZ0sPZ Z0Z0Z0Z0 POKZQa0Z Z0Z0Z0ZR

531 8

b

533

ka0s0ZrZ opZ0ZRo0 0Zpl0Z0o O0Z0o0Z0 0ZBZPZ0Z Z0OPZ0On 0OKZ0L0Z S0Z0Z0A0 a

Opening up a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0Z0skZ opZqZ0Zp 0Z0Z0ZpZ Z0Zpo0Z0 0Z0Z0ZPZ Z0ZBOPZQ POPJ0Z0Z S0Z0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

535 8 7 6 5 4 3 2 1

538

rZ0Z0s0Z Z0o0ZpZk 0o0o0Zpo ZPmPo0l0 pZPZPZPZ O0Z0MPS0 0Z0L0Z0O Z0Z0S0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0Z0Z Z0Z0Z0j0 0O0o0ZpZ Z0ZPonZ0 0Z0l0Z0Z Z0Z0Z0Z0 0Z0Z0ZPO sRZ0LBZK a

536 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

540

0Z0mbZ0j ZpZ0M0a0 0Z0ZpZPZ Z0ZpO0ZP pZrO0S0Z Z0Z0ZpJ0 PZ0Z0Z0Z ZRZ0Z0Z0 a

c

0Z0Z0s0Z Z0Z0Z0lk 0Z0Z0s0o Z0Z0ZbZP PO0L0S0S Z0Z0Z0Z0 0Z0Z0JPZ Z0Z0Z0Z0

537 8

b

539

rZ0ZqZrj opZ0abZp 0m0m0ZpZ Z0ZpMpZ0 pO0O0O0Z O0Z0M0ZQ 0Z0Z0ZRO ZBA0Z0SK a

Opening up a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZqZ o0ZrZpZk 0o0ZpSpZ Z0o0O0Sp 0Z0s0Z0O O0Z0Z0L0 0O0Z0OPZ Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

541 8 7 6 5 4 3 2 1

544

rZbZ0ZkZ ZpZ0spop 0ZnZ0Z0Z o0m0Z0Z0 0ZPo0S0Z OPZPZ0O0 0Z0M0ZBO S0Z0M0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0s0ZkZ o0Z0Z0lp 0ZpZpZ0Z Z0O0ZpZ0 PZ0OpOpZ Z0Z0O0O0 0S0L0Z0O ZRZ0Z0J0 a

542 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

546

0Z0s0ZkZ Z0o0Zpo0 0ZnZ0ZqZ o0A0o0Zn QZ0ZPZ0Z ZPO0ZPO0 0Z0Z0J0Z Z0SrSNZ0 a

c

rZ0Z0skZ o0ZbZ0Zp Bl0o0ZpZ Z0ZPZpZ0 0O0ZpZ0Z Z0Z0O0OP QZ0Z0O0Z S0S0Z0J0

543 8

b

545

0ZbZqs0Z Z0m0j0Z0 rZpZpZpo MpOpOpZ0 0O0O0Z0Z S0ZBZPO0 RJ0Z0Z0O L0Z0Z0Z0 a

Open line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0ZkZ l0Z0Zpap 0o0ZbZpZ ZnZpo0Z0 0O0Z0Z0Z Z0ZPM0O0 0Z0APOBO ZQZ0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

547 8 7 6 5 4 3 2 1

550

rZ0s0ZkZ mpZ0lpop pZpZ0Z0Z Z0ZPo0Z0 0a0ZNZ0Z ZPZ0O0ZP PA0ZQOPZ Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZkZrZ0s opoqZ0Z0 0Zna0opZ Z0ZpZnZ0 0Z0O0O0o Z0OQZ0ZP PO0ANZPM Z0JRZRZ0 a

548 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

552

0ZRarZkZ ZpZ0ZpZp pZ0Z0Z0Z Z0ZpZqo0 0Z0ZnM0Z ZPZ0O0O0 PA0Z0O0O Z0L0Z0J0 a

c

0sbZrZkZ opo0Zpap 0m0Z0ZpZ M0Z0o0Z0 0Z0Z0Z0Z ZPZ0Z0OP PAPZPOBZ Z0JRZ0ZR

549 8

b

551

nZrZ0akZ ZqsbZ0m0 pZNo0ZpZ ZpZPopZp 0O0ZPZ0O O0M0APOB 0ZRZ0L0J Z0S0Z0Z0 a

Open line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrl0akZ ZnZbZpZp 0Z0o0mpZ ZpZPo0Z0 0OpZPZ0Z Z0O0ANMP RZ0L0OPZ ZBZ0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

553 8 7 6 5 4 3 2 1

556

rZbZ0skZ opZ0lpop 0m0ZpZ0Z Z0Z0M0Z0 0Z0Z0Z0Z Z0Z0Z0O0 PO0LPOBO Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0ZnskZ ZpZ0Z0o0 0mpZ0o0o Z0l0oNZ0 0ZPZPZ0Z ZPZRZ0OB 0L0Z0O0O Z0ZRZ0J0 a

554 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

558

rZ0akZ0s o0Z0Z0op 0ZpZpo0Z Z0ZpZ0ZP 0Z0O0APZ Z0O0OPZ0 PZKZ0Z0Z S0Z0Z0ZR a

c

bsqZ0skZ S0Znm0a0 0opZ0Zpo ZPZ0opZ0 0ZPo0Z0Z ZNZPZNO0 0ZQAPOBO S0Z0Z0J0

555 8

b

557

0Z0Z0Zrs ZplbZnjp pZpZpZpZ Z0OpZpOP PO0O0O0Z L0ZBONZ0 0Z0Z0J0S Z0Z0Z0ZR a

Open line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

bmrl0Z0j Z0s0ZpZp 0ZpZ0ZpL opZBZ0Z0 0Z0O0ZNZ Z0Z0Z0O0 PO0Z0O0O Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

559 8 7 6 5 4 3 2 1

562

rZ0Zbs0j opZnl0op 0ZpZ0Z0Z Z0Z0OpZ0 0ZQZ0Z0Z ZPM0ZPO0 PZ0Z0ZBO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0ZrZkZ o0Z0Zpap 0Z0Z0ZpZ l0o0Z0Z0 0ZPoNZ0Z ZPZRZQZP PZ0Z0OPZ S0Z0Z0J0 a

560 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

564

0ZnZrsnZ opZ0Z0jp 0ZpZpZpZ L0Z0O0Z0 0Z0Z0l0Z ZBZ0Z0M0 PO0Z0OPO Z0S0ZRJ0 a

c

0s0s0ZkZ o0Z0ZpZp 0Z0Z0ZpZ Z0o0Z0Z0 0l0ZpZ0Z Z0ObO0O0 PZ0S0OBO S0Z0L0J0

561 8

b

563

0Z0l0skZ ZpZ0opZ0 0O0o0apZ Z0mPZ0Z0 pZPZ0ZBZ O0Z0A0O0 0Z0Z0OKZ ZQZ0Z0ZR a

Open line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0skZ opZ0l0op 0ZbZ0ZnZ Z0o0ZpZ0 0Z0ZnZ0Z Z0O0ONZP PZQZBOPA Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

565 8 7 6 5 4 3 2 1

568

0ZnsqskZ ZpobZpa0 pZ0Z0Zpo Z0Z0o0Z0 0Z0ZPZ0Z Z0O0MNO0 POBZQOPZ S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZrZ0ZkZ o0s0Zpap 0o0ZpZpZ Z0o0O0Z0 0Z0mBOPZ Z0Z0A0ZP POPZ0SKZ Z0ZRZ0Z0 a

566 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

570

rZbl0s0j o0Z0ZnZp 0Z0o0mpa Z0oPopZ0 0ZPZPZ0Z O0M0ZPZ0 0ZQMBAPO ZRZ0ZRJ0 a

c

0Z0lkZ0s ZrZnapop 0Z0Zpm0Z Zpo0Z0Z0 0Z0Z0A0Z Z0MPZ0O0 0OQZPONO S0Z0ZRJ0

567 8

b

569

0Z0s0akZ opl0Z0op 0ZpZ0o0Z Z0Z0oNZ0 PO0ZPm0Z Z0O0Z0Z0 0AQZ0OPO S0Z0Z0J0 a

Open line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ opZ0lpop 0ZpZbm0Z Z0Z0Z0Z0 0Z0SPZ0Z Z0M0ZPZ0 POBZ0LPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

571 8 7 6 5 4 3 2 1

574

rZ0l0mkZ Zbo0Zpop 0o0o0a0Z Z0ZPo0Z0 0OPZPZ0Z Z0A0Z0OB 0L0M0O0O Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0lkZ0s Z0Z0Zpo0 0Z0Z0m0Z o0apM0A0 Po0m0ZpZ ZBZPZ0Z0 NOPZ0OPZ S0Z0LRJ0 a

572 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

576

0sbl0s0j Z0Z0apmp 0Z0o0mpA ZpoPo0Z0 0Z0ZPZ0Z ZPO0MNZP 0ZBZQOPZ S0Z0S0J0 a

c

rZrZ0akZ Z0l0ZpZp pm0Z0ZpZ M0ZbZ0Z0 0Z0OpZ0Z Z0Z0O0Z0 0A0ZBOPO SQZ0ZRJ0

573 8

b

575

0ZrZ0skZ opZqZpop 0Z0Z0Z0Z Z0onZbZQ 0Z0oNZ0Z Z0ZPZ0O0 POPZROBO Z0Z0S0J0 a

Open line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0abZ ZpZ0Z0o0 0jpZ0ZPo ZqZ0oNZP 0Z0oPZ0Z ZPZPZRZ0 PZ0Z0Z0Z ZKAQZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

577 8 7 6 5 4 3 2 1

580

rZblkZ0s ZpZ0apZ0 pZnopZ0Z Z0Z0m0o0 0Z0MPZPZ Z0M0A0Z0 POPLBO0Z Z0JRZ0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Zns0j o0Z0Z0ap 0ZNo0Z0m Z0oPo0l0 0ZPZPobZ Z0Z0Z0Z0 PZ0ABZPO ZRZ0LRJN a

578 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

582

rZbl0akZ o0Z0mrZ0 0Z0o0m0Z Z0oPo0op QZPZPo0Z Z0M0ZPZP PS0ABMPZ Z0Z0ZRJ0 a

c

rZbl0s0j Z0Z0m0ap 0Z0o0ZpZ o0oPopZ0 0ZPZPZ0Z O0M0ZPZ0 0Z0ZBZPO ZRAQZRJ0

579 8

b

581

0Z0s0skZ Z0o0lpo0 poPZpZ0o Z0ZnM0Z0 0Z0Z0Z0Z Z0Z0Z0O0 POQZPOKO Z0SRZ0Z0 a

Open line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0Znj o0Z0l0Zp 0ZRo0Z0Z Z0ZPo0o0 0Z0ZPo0Z Z0ZBZPZP PZ0L0ZPZ Z0S0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

583 8 7 6 5 4 3 2 1

586

rZ0Z0Z0s Z0o0lnj0 bo0o0opa o0ZPo0Z0 0ZPZPZPA ZPM0ZPZ0 PZ0Z0Z0Z Z0MRJQZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0m0Z0Z0s o0ZkapZ0 bo0ZpZ0l m0ZpO0Z0 0Z0O0Z0Z OPZ0ZNOr 0A0Z0ORM SBZQZ0ZK a

584 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

588

rZbZ0skZ Zpl0Z0Zp pZnapZ0o Z0ZpZ0Z0 0Z0O0Z0Z Z0MBZNZP PO0ZQOPZ Z0ZRZRJ0 a

c

0Z0Z0s0Z Z0jqZ0o0 0o0Zro0o o0ZpO0Z0 0Z0O0ZQZ Z0Z0Z0ZP PO0Z0SPZ Z0Z0ZRJ0

585 8

b

587

0Z0Z0ZkZ ZqZ0s0o0 pZ0oPo0o Z0Z0ZPZQ 0s0ZPZ0Z ZPZ0Z0ZR 0Z0Z0J0O S0Z0Z0Z0 a

Open line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0m0s0j o0ZqZ0Zp 0Z0O0a0Z ZpoQspMP 0Z0ZpZ0Z Z0O0M0Z0 PO0Z0ORZ ZKZ0Z0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

589 8 7 6 5 4 3 2 1

592

0Zks0Z0s Zpo0Zna0 pZpZ0lbZ Z0Z0o0o0 0Z0ZPZPZ ZPZ0MPZ0 PAPMQZ0Z S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0s0skZ opZ0Zqop 0Z0Z0Z0Z Z0apZpZ0 0ZnZ0A0Z Z0OQZPOP PO0ZRZBJ Z0Z0S0Z0 a

590 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

594

bZ0s0skZ Z0Z0l0Zp pZ0Z0opZ ZponZ0Z0 0Z0ZNZ0L ZBOPZ0O0 PO0Z0O0O S0Z0S0J0 a

c

rZ0lrZkZ Z0Z0Zpo0 pZ0abZ0o Zpo0Z0ZQ 0Z0ZPZ0Z O0M0A0ZP 0O0Z0OPZ S0Z0S0J0

591 8

b

593

0ZqZrakZ Z0Z0ZpZ0 0ZrZpZpo opo0O0Z0 0Z0Z0O0Z Z0O0AQO0 PO0S0Z0O Z0Z0S0J0 a

Open line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0j0Z Z0Z0Zpo0 0Z0ZpZ0o ZpZpO0Z0 0O0O0Z0O l0Z0Z0O0 0ZRZ0OKZ ZQZRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

595 8 7 6 5 4 3 2 1

598

0Z0Z0s0j ZpZbZpZp pZ0opa0Z Z0Z0ZPZB 0l0Z0Z0Z ZPs0Z0S0 0ZPL0ZPO Z0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrZkZ ZrZ0Z0Zp qZ0o0OpZ ZNZPZ0On 0o0ZPZ0Z ZPoQZ0Z0 PZ0Z0ZRZ Z0Z0ZRZK a

596 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

600

0Z0ZrskZ Z0l0Z0op pZbZ0ZPZ ZpZ0o0Z0 0a0ZPZBZ Z0M0Z0Z0 POPL0Z0Z ZKZRZ0S0 a

c

0ZrZ0ZkZ Z0Z0Z0Zp 0Z0Z0Zpa Z0ZpA0Z0 pZ0O0Z0Z O0Z0ZROq 0Z0ZQO0O Z0Z0Z0J0

597 8

b

599

rZ0ZrZkZ Z0o0Z0Z0 0oNZ0ZbZ oQZ0Zpl0 0ZPOpZRZ O0O0O0m0 0Z0Z0ZPZ Z0ZBS0J0 a

Closing a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZbZ0ZpZ0 0Z0o0SpZ Z0Z0Z0Lp 0Z0M0Z0Z Z0Z0o0Z0 pZ0Z0ZPO SqZ0A0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

601 8 7 6 5 4 3 2 1

604

0L0ZbZ0Z o0Z0Z0lk 0ZpZpZ0o Z0OpZpZ0 0Z0O0Ona O0ZNZBZN 0Z0ZPZ0O Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0skZ Z0Z0ZpZp pZ0o0Z0Z Z0Z0a0OQ 0ZPZ0Z0S Z0ZqZ0Z0 0Z0s0ZBO Z0Z0ZRZK a

602 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

606

rZ0Z0ZkZ lpZ0ZpZp 0Zpo0ZpZ o0Z0Z0Z0 NZPZrZbZ ZPZ0SPO0 0O0L0ZPZ Z0ZRZ0J0 a

c

0ZbZqs0j Zpo0Z0ap nZ0Z0Z0A o0oPZ0Z0 0ZPZpZBM OrZ0Z0ZP 0O0L0O0Z ZRZ0J0S0

603 8

b

605

rZ0l0skZ ZpZ0Z0ap 0Z0o0ZpZ Z0Z0onZn 0ZPZ0Z0Z ONM0ZQO0 0Z0Z0O0O ZRA0ZRJ0 a

Closing a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0s0j Z0l0Zpap 0ZNobZ0Z o0Z0o0Z0 RZ0Z0Z0Z Z0O0ZBZ0 0O0Z0OPO Z0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

607 8 7 6 5 4 3 2 1

610

0Z0Z0skZ o0o0mpo0 0ZqZpZ0s ZpZ0ZPZ0 0Z0O0Z0Z O0O0M0Z0 0O0Z0ZQO Z0JRS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0sbZkZrZ ZpZnapZ0 pZ0opm0o l0Z0Z0O0 0Z0MPZ0A Z0M0Z0L0 POPZBZPO Z0JRZRZ0 a

608 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

612

rZ0lrZkZ opZ0ZpZp 0Z0Z0ZpZ m0ZPL0Z0 bZ0M0Z0Z Z0Z0Z0O0 PO0Z0OBO S0A0Z0J0 a

c

rZ0ZrZnj opZ0Z0o0 0Zqa0o0o Z0o0ZPZ0 0Z0ZPZQM ZPO0A0ZR 0Z0Z0ZPO Z0ZRZ0J0

609 8

b

611

0Z0Z0Z0s Z0j0Z0op pZbZpZ0Z Zpa0lpZ0 0ZRZPZ0Z Z0M0Z0Z0 POPZQZPO ZKZ0Z0ZR a

Closing a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZnZrZ Zpl0Zpok 0o0ZpZ0o ZbZ0M0ZN 0Z0Z0Z0Z Z0Z0Z0L0 POPZ0O0O ZKZRZ0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

613 8 7 6 5 4 3 2 1

616

kZns0Z0Z ZpZrZ0o0 pZpZpZ0Z O0A0ZpZ0 BLPObZ0o Z0Z0S0ZP 0S0Z0OPJ Z0l0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0Z0Z Z0Z0O0j0 0Z0Z0ZPZ ZpZ0Z0Z0 pA0O0a0l O0Z0ZrZP 0Z0Z0ZPZ Z0Z0S0LK a

614 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

618

0Z0Z0ZkZ Z0Z0Z0o0 0ZNo0Zqo ZPZPZ0Z0 0Z0Z0o0m Z0Zbs0Z0 PL0Z0ZPO Z0S0M0ZK a

c

0Z0Z0Z0j Z0Z0Zpsp 0Z0Z0ZqZ o0ZpO0Z0 PZ0O0Z0a Z0Z0A0ZQ 0Z0Z0Z0O Z0Z0ZRZK

615 8

b

617

rZ0Z0aks opoqZ0op 0ZnZRZ0Z Z0Z0Z0M0 0Zpo0ZPZ Z0Z0ZQZ0 POPZ0O0O S0A0Z0J0 a

Closing a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0Z0Z opZ0Z0a0 0Z0Z0Z0Z Z0Z0m0Zp 0Z0ZNo0Z Z0O0ZPZp PO0ZKO0Z S0A0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

619 8 7 6 5 4 3 2 1

622

rZ0Z0Z0j opZ0lpop 0Z0S0m0Z Z0Z0s0Z0 0ZBZ0L0Z Z0M0Z0Z0 PObS0ZPO Z0Z0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrZ0j opZ0m0o0 0a0o0o0Z Z0oqZ0Z0 0Z0ZNZQZ Z0Z0Z0ZP 0Z0A0ZPZ Z0Z0S0ZK a

620 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

624

0Z0Z0Z0Z Z0o0Z0ok 0Z0orZ0o ZPZ0ZpZ0 0ZPL0O0Z Z0S0Z0ZP 0l0m0APJ Z0Z0Z0Z0 a

c

0ZrZkZ0s opZbZpop 0Z0Z0Z0Z Z0lpO0Z0 0Z0Z0ZnZ Z0MBZ0Z0 PO0Z0OPO ZRZQS0J0

621 8

b

623

0Z0Z0ZkZ Z0oqZ0op 0ZnZ0o0Z oQZ0o0Z0 PZ0ZRZ0Z Z0O0ZNO0 0O0Z0OKO Z0ZrZ0Z0 a

Closing a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0Z Z0Z0mQak 0Z0M0Zpo ZpZ0Z0Z0 0O0Z0Z0Z Z0Z0Z0A0 0OqZrOPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

625 8 7 6 5 4 3 2 1

628

0s0Z0skZ Z0Z0ZpZ0 0Zpo0LpZ Z0Z0Z0Zq NZPZPZbZ Z0ZPZ0Op PZPZ0Z0O ZRZ0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0Z0Z0j Z0l0ZpZp pZ0o0Z0A Z0Z0ZPL0 nZpZ0Z0Z Z0a0Z0ZP PsBZ0ZPZ Z0S0S0J0 a

626 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

630

0Z0Z0Z0j o0ZRZ0Z0 0ZpZ0o0O Z0Z0ZKZ0 0OPZ0Z0Z Z0Z0Z0Z0 rZ0A0Zpa Z0Z0Z0Z0 a

c

rZ0a0s0j opoqZ0on 0ZnobZQZ Z0ZNZNZp 0ZBZPO0O Z0Z0Z0Z0 POPZ0Z0Z Z0J0Z0SR

627 8

b

629

0ZrZ0ZkZ Z0Z0Zpo0 bZ0MpZ0o Z0Z0Z0Z0 0Z0L0Z0Z ZPZ0O0Z0 PZ0ZqOPO Z0ZRZ0J0 a

Closing a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0l0Z0Z Z0ZbZBok 0s0a0ZNo Z0Z0ZpZP 0o0Z0O0Z ZQZ0Z0O0 0Z0Z0O0Z Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

631 8 7 6 5 4 3 2 1

634

0ZrZ0Z0Z ZpZ0Z0ok pA0Z0oqZ Z0Z0o0Z0 0Z0o0Z0Z L0Z0Z0Ob PO0ZPO0O Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Zks0ZrZ obo0Z0Zp 0o0Z0ZpZ ZNlpMpZ0 0Z0ZnL0Z Z0Z0Z0Z0 POPS0OPO Z0J0S0Z0 a

632 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

636

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c

0ZbZrmkZ s0l0Zpop 0Z0Zpa0Z Z0o0M0ZQ 0ZPZBZ0Z ZPZ0Z0Z0 0A0Z0Z0Z Z0ZRZRJ0

633 8

b

635

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Closing a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZ0j opl0sRZp 0Z0Z0ZpZ Z0o0a0L0 0ZBmpA0Z Z0Z0Z0ZP PO0S0ZPZ Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

637 8 7 6 5 4 3 2 1

640

0Z0ZBs0j o0Z0ZrZ0 0o0o0ZqZ Z0oPZ0Zp 0ZPZRapZ Z0Z0Z0Zn PO0ZQZ0O Z0A0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0Z0Z o0Z0ZQo0 bo0ZpZ0j Z0Z0S0aP 0Z0Z0ZPZ Z0Z0Z0Z0 POqZ0Z0Z J0Z0Z0S0 a

638 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

642

0srZ0ZkZ ZpZblpap 0S0o0ZpZ oNZPZ0Z0 PZ0ZPZnZ ZQZ0Z0Z0 0Z0MBZPO Z0A0S0J0 a

c

0ZbZqs0j Z0Z0Z0Zp pZpS0ZpZ ZpO0o0L0 0Z0ZPZ0Z ZBZ0Z0Z0 PO0Z0ZPO Z0Z0Z0J0

639 8

b

641

0Z0Z0skZ Z0Z0Zpo0 0Z0a0Z0Z Zpo0ZqA0 0Z0ZRZ0L ZBOnZ0Z0 0O0Z0OPO Z0Z0Z0J0 a

Closing a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0Z0j Z0Z0LpZp pZ0ZpZ0Z ZpS0Z0ZP 0Z0lbZ0Z O0Z0Z0S0 0O0Z0OPZ Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

643 8 7 6 5 4 3 2 1

646

0Z0s0ZkZ spZbZ0o0 0ZpS0aPZ o0O0ZpZ0 0ZqZ0Z0Z O0Z0O0O0 0Z0Z0OBZ Z0ZQZ0JR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZbLrZkZ o0Z0Zpop 0ZpZ0Z0Z Z0Z0Z0Z0 0APZqZ0Z O0Z0Z0ZP 0ZPZ0OPZ Z0ZRZ0J0 a

644 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

648

bZRZ0mkZ Z0Z0Zpop 0o0Z0m0Z Z0Z0ZNZ0 0a0ZpZ0Z ZPZ0APZ0 qZ0ZBLPO Z0Z0Z0J0 a

c

0Z0Z0skZ ZrZqa0op pZ0Zbo0Z Z0onA0Z0 Po0Z0Z0Z Z0ZPZQMP BOPZ0ZPZ S0Z0S0ZK

645 8

b

647

0ZbZ0s0Z Zpm0Z0ok rZ0Z0Z0Z o0Z0M0Z0 0ZQZ0o0M Z0Z0Z0ZR Pl0Z0ZPO Z0Z0S0ZK a

Closing a line

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbs0ZkZ Z0l0apop pZpZpm0Z Z0Z0S0Z0 0Z0Z0A0Z Z0M0Z0O0 POPZ0OBO S0ZQZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

649 8 7 6 5 4 3 2 1

652

rZ0Z0Zks opZ0Zpa0 nZ0Z0l0o Z0oPZ0Z0 0Z0m0ZpZ Z0MQZ0A0 PO0S0OPO Z0J0Z0MR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZrZ0s0j o0l0Zpop 0onZpa0Z Z0ZnM0Zb 0O0O0Z0Z O0Z0ZNZP 0L0ZBOPZ Z0ARZRJ0 a

650 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

654

rZ0ZrZ0j ZNZnZ0op pZpZ0Z0Z Z0Z0Z0Z0 0O0ZPl0Z O0ZPZPZ0 0L0Z0ZKO Z0S0ZRZ0 a

c

0Z0Z0Zrj o0Z0lpsp 0o0o0m0Z Z0oPoPon 0ZPZ0Z0Z O0ZBZPO0 0O0LNS0O Z0Z0S0ZK

651 8

b

653

0s0l0s0j Z0ZbZpo0 pZ0M0m0o ZpZ0Z0Z0 0L0Z0Z0A O0Z0ZPZ0 0Z0Z0ZPO Z0ZRZRJ0 a

Pin

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZkZ Z0Z0ZpZp pZ0Z0o0Z Z0s0Z0Z0 0Zbs0Z0Z Z0Z0ZBZ0 PZ0Z0OPO Z0S0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

655 8 7 6 5 4 3 2 1

658

0Z0ZrmkZ opZ0Z0ZN 0Z0ZbZpL Z0oqZ0Z0 0Z0Z0Z0Z Z0Z0S0ZP PO0Z0ZPZ Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZRZnZkZ ZrZ0l0op 0o0ZpZ0Z oPZbApZ0 0Z0Z0Z0Z Z0Z0L0OP 0Z0ZPOBZ Z0Z0Z0J0 a

656 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

660

0s0s0mkZ ZbaqZpop po0Z0m0Z Z0o0oNZ0 PZ0ZPZ0Z S0ZPZNO0 0O0A0OBO Z0SQZ0J0 a

c

0ZkZ0Zns Z0o0Zpop 0o0Z0Z0Z Z0ZrZ0Z0 0ZpZ0Z0Z Z0O0A0O0 PS0Z0O0O ZRZ0Z0J0

657 8

b

659

0Z0Zks0Z o0ZqZpZp 0Z0ZpZ0Z ZrZ0m0ZQ 0Z0oBZ0Z Z0Z0Z0Z0 PZ0Z0OPO Z0S0ZRJ0 a

Pin

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0ZqZkZ o0s0m0o0 PonZpZ0o ZBZpOpZ0 0O0O0O0Z Z0Z0LNZ0 0ZRZ0ZPO Z0S0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

661 8 7 6 5 4 3 2 1

664

0Zks0s0Z o0Z0Z0Zp 0Z0Z0OpZ Z0oPZ0Z0 0lpZ0L0O Z0Z0Z0ZR PO0Z0Z0Z ZKS0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZrZks0Z oRZ0Z0Zp 0ZqZ0Z0Z Z0ZpZ0Z0 QZ0ZbO0Z Z0Z0Z0Z0 PO0Z0ZPO Z0Z0S0J0 a

662 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

666

ra0Z0Zrj o0Z0ZpZp 0l0Z0o0A Z0S0ZNZ0 0Z0obZ0L O0Z0Z0O0 0O0Z0O0O Z0Z0Z0J0 a

c

rZ0s0Z0Z ZbZ0Zpj0 0Z0Z0lpZ oPZpZ0Zp 0ZpM0Z0O Z0ZnO0O0 PLRZ0OBZ Z0ZRZ0J0

663 8

b

665

rZ0lnskZ opZ0L0mp 0Z0o0ZpA Z0oPZpM0 0ZPZ0Z0Z Z0ORZ0Z0 PZ0Z0OPO Z0Z0S0J0 a

Pin

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0Z o0Z0Spj0 0Z0o0mpo ZrlPZ0Z0 0Z0Z0O0Z ZPZ0Z0OP PL0Z0ZBJ Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

667 8 7 6 5 4 3 2 1

670

0Z0Z0j0Z Z0Z0Z0o0 pZ0l0Z0o a0Z0Z0Z0 0ZQA0Z0Z Z0Z0Z0ZP PZ0Z0ZPZ Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Zrl0skZ o0mba0op 0ZnZ0Z0Z ZpO0ZpZ0 0Z0Z0Z0M ZPM0Z0O0 PA0Z0OBO Z0SQZRJ0 a

668 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

672

rZ0l0skZ o0ZnZpop Bo0ZpZ0Z Z0ZbM0Z0 0Z0O0Z0Z Z0Z0Z0Z0 PO0L0OPO S0Z0ZRJ0 a

c

0s0l0ZkZ S0Z0ZpZ0 0Z0ObZ0o Z0Z0L0o0 0o0ZBZ0Z Z0o0Z0OP 0O0Z0O0Z Z0Z0Z0J0

669 8

b

671

0ZrZ0ZkZ ZpsqZpop 0m0o0Z0Z ZPZ0o0Z0 0ZPZ0Z0Z ZQZ0O0Z0 0ZRM0OPO Z0Z0ZRJ0 a

Pin

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0Z Z0Z0Zpj0 0aRZ0ZpZ Z0Z0Z0Zp 0Z0Z0O0O Z0ZQZNO0 0Z0Z0J0Z ZrZ0Z0Zq a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

673 8 7 6 5 4 3 2 1

676

rZ0Z0j0Z Z0ZnZqop pZ0Z0o0Z Zpa0oNZ0 0Z0ZPZQZ ZPZ0Z0ZP 0O0A0OPZ Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZbl0skZ ZpZ0Zpap pZ0Z0ZpZ Z0ZnZ0Z0 0Z0M0Z0Z Z0Z0A0Z0 PO0LBOPO S0ZRZ0J0 a

674 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

678

qZrZrakZ ZbZ0Zpop po0ZpmnZ Z0ZpZ0Z0 0ZPMPZ0Z ZPM0L0OP PA0ZROBZ Z0Z0S0ZK a

c

rZblks0Z opopapLp 0Z0Z0Z0Z Z0Z0ZnZ0 PZ0Z0Z0Z Z0M0Z0Z0 0OPO0OPO S0A0S0J0

675 8

b

677

rmbZ0s0j opZ0o0Zp 0Zpo0ZpZ l0ZPZpZ0 0Z0Z0Z0Z ZPa0ZNO0 PA0ZPOBO S0ZQZRJ0 a

Pin

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ opZ0ZpZp 0ZnZ0apZ Z0ZpZ0M0 0Z0Z0Z0O ZPZ0O0Z0 PAQZBOPZ Z0ZRZKZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

679 8 7 6 5 4 3 2 1

682

0Z0Z0Zrj o0Z0ZqZ0 0Z0Z0Z0o Z0Zbo0Z0 0Z0Z0o0Z ZNZ0Z0Z0 PO0LPZRO Z0Z0Z0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZrZ0s0j o0ZbaPop 0Z0o0m0Z l0ZBZ0Z0 0o0APZ0Z Z0Z0Z0Z0 POPZQO0O Z0JRZ0S0 a

680 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

684

0s0l0s0j Z0Z0aPop pZbo0m0Z Z0Z0Z0S0 0Z0APZPZ ZBO0L0ZP PZPZ0Z0Z S0Z0Z0J0 a

c

0Z0s0Z0Z Z0snlpj0 pZ0Z0Z0o ZpoBo0oP 0ZPZPZ0Z ZPZRL0Z0 PZ0Z0OPZ Z0ZRZ0J0

681 8

b

683

0Z0srZkZ opZ0Z0op 0Z0ZqZ0Z Z0opo0L0 0ZpZ0Z0Z Z0Z0Z0O0 PO0Z0OBO Z0ZRS0J0 a

Pin

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srZkZ o0Z0apo0 boqZ0Z0o ZNZnZ0M0 PZ0Z0Z0Z ZQZ0A0O0 0O0Z0OBO S0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

685 8 7 6 5 4 3 2 1

688

rZ0lrZ0Z obZ0Zpj0 0opZnapo Z0Z0M0Z0 0ZBONZ0Z ZQZ0Z0Z0 PO0Z0OPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0l0skZ o0ZbZpop 0opM0ZnZ Z0Z0Z0Z0 0Z0ZQO0Z ZBZ0O0ZP PO0Z0ZPZ Z0ZRZ0J0 a

686 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

690

rZbZ0ZkZ o0Z0l0o0 0o0ZpZ0o Z0ZpMrZ0 0Z0O0Z0Z Z0Z0Z0Z0 POQZ0OPO Z0S0S0J0 a

c

0Z0skZrZ Z0ZbopZ0 0ZQZ0Z0Z ZpZRZ0Zp 0Z0S0Z0Z Z0O0Z0AP PO0Z0OPJ Z0Z0ZqZ0

687 8

b

689

rZbl0skZ opo0Zpa0 0Z0Z0Zno Z0ZNZpMQ 0Z0Z0Z0Z Z0Z0Z0O0 PZPZ0OBO S0Z0ZRJ0 a

Pin

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrm0s0Z Z0oqZ0ak pZ0o0Zpo ZpZPZnZ0 0O0O0M0Z Z0Z0A0O0 PZ0L0ZBO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

691 8 7 6 5 4 3 2 1

694

0Z0Z0Zrj Z0Z0Z0Z0 pl0o0Z0a ZpZbo0ZP 0O0Z0Z0Z Z0O0Z0MP 0ZRZ0L0J Z0Z0S0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0s0Z o0Z0j0ap 0opM0ZpZ Z0m0m0M0 0Z0Z0Z0Z Z0Z0Z0A0 PO0Z0ZPO Z0JRZ0ZR a

692 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

696

rZ0arZkZ Z0Z0Z0op pZqZpm0Z Z0Z0o0M0 PoBZPZ0Z Z0Z0Z0Z0 0OPZQZPO Z0ZRZRZK a

c

0sbZ0s0Z opZ0lpjp 0ZpZ0mpZ Z0ZpZ0A0 0Z0O0Z0Z Z0M0ZQM0 POPZ0OPO Z0Z0ZRJ0

693 8

b

695

0s0ZrZkZ opZ0Z0a0 0l0obm0Z ZPo0ZpZ0 0ZPZ0Opo Z0ZPZ0O0 PA0Z0MBO ZRZQS0J0 a

Pin

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0Z0s ZbZkZpZp pZ0apo0Z l0Z0Z0Z0 No0MPZ0Z ZQZ0Z0Z0 PO0Z0OPO S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

697 8 7 6 5 4 3 2 1

700

0s0Z0Z0s Z0Z0lka0 0ABo0Z0Z Z0ZPo0Z0 NZ0ZPo0m Z0ZQZPmP PZ0Z0M0J Z0S0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0s0ZkZ o0Z0Zpop 0l0Zbm0Z Z0Z0Z0Z0 0Z0M0Z0Z ZPZ0ZPZ0 PZ0L0ZPO S0ARZ0J0 a

698 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

702

0Z0Z0skZ o0Z0Z0Zp 0apZ0ZpZ Z0ZpZrZ0 0Z0Z0Z0Z ZPZnM0A0 0O0Z0OPO S0Z0ZRJ0 a

c

rZ0s0ZkZ opZ0Zpap 0ZnZ0mpZ ZNZ0Z0Z0 0Z0Z0Z0Z ZBMbAPZ0 PO0Z0ZPO Z0ZRS0J0

699 8

b

701

0Z0Z0snj Zpo0Z0ap 0Z0o0ZqZ Z0ZPZbZ0 0OPZNZ0Z s0ZBZ0Z0 0ZQZ0ZPO Z0A0SRJ0 a

Pin

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srZkZ ZpZ0Zpap pZ0ZbmpZ l0o0Z0Z0 0mPZPA0Z ZPM0ZNZP PZ0ZBOPZ ZQS0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

703 8 7 6 5 4 3 2 1

706

rs0Z0ZkZ Z0o0apop pZ0ZnZ0Z ZpZ0O0Z0 PZ0ZNO0Z Z0Z0A0Z0 0O0Z0ZPO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Zrs0ZkZ ZpZ0Zpop 0Z0Z0ZbZ oBZpZ0Z0 PZ0O0ZPZ Z0Z0ZPZ0 0O0Z0ZPZ S0Z0S0J0 a

704 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

708

0l0Zrs0j ZpZ0a0op pApZBm0Z O0Z0o0Z0 0Z0Z0Z0Z Z0Z0Z0O0 0OQZPO0O S0ZRZ0J0 a

c

rZ0Z0ZkZ Z0oqZpo0 0ZpZ0m0o Z0L0Z0Z0 0Z0Z0O0Z ZPO0Z0O0 0Z0Z0ZBO Z0Z0S0J0

705 8

b

707

rZbZ0s0Z o0Z0Zpjp 0o0ZpZpZ Z0ZqM0Z0 0Z0O0Z0Z O0Z0Z0Z0 0O0Z0OPO Z0SQZRJ0 a

Rook on the 7th or the 2nd rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZns0Z obZpZkoQ 0Z0Zqo0A ZpZ0Z0Z0 0Z0O0Z0S O0Z0Z0M0 0Z0Z0ZPO S0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

709 8 7 6 5 4 3 2 1

712

0ZrZ0ZkZ o0Z0apop qZrZpZ0Z Z0ZpZ0Z0 0o0OnZ0Z ZQZ0O0O0 PO0M0O0O S0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Zks0Z0s opZ0S0Zp 0Zbo0ZpA Z0o0Z0Z0 0ZPZ0Z0Z Z0ZqO0ZP PL0Z0ZPZ ZRZ0Z0J0 a

710 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

714

rZ0s0ZkZ o0ZnZpo0 0oqZ0Z0o Z0ZpS0ZN 0Z0O0Z0Z O0OQZ0Z0 0Z0Z0OPO Z0Z0S0J0 a

c

0s0Z0ZkZ o0o0Z0op 0Z0ZpZ0Z Z0OpZpZ0 0Z0ObZ0O O0ZqOPO0 0s0Z0Z0Z S0SBL0J0

711 8

b

713

0Z0Zrs0j ZbZ0Z0Zp pl0Zpo0Z ZpZ0Z0Z0 0Z0ZpM0Z Z0Z0O0L0 PO0Z0OPO Z0S0ZRJ0 a

Rook on the 7th or the 2nd rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0s0Z obZ0ZpZk 0o0ZpZpZ Z0l0Z0Z0 0Z0M0OQO Z0Z0O0Z0 PZ0Z0ZPZ Z0ZRZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

715 8 7 6 5 4 3 2 1

718

0Z0Z0s0j o0Z0Z0ap qZ0ZrZpZ Z0o0ZpZ0 0Z0ZpZ0Z Z0O0M0O0 POQS0O0O Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZrZ0skZ Z0ZbZ0Zp 0o0o0Z0Z o0mPo0Z0 0Z0Z0Z0Z ZPZ0Z0OP PA0ZQlBJ Z0ZRS0Z0 a

716 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

720

rZrZ0Z0j ZRZ0Z0S0 pZ0ZpopZ ZpZ0Z0Z0 0O0Z0Z0O Z0O0o0Z0 0ZnZ0Z0Z Z0Z0A0ZK a

c

rZ0Z0j0s Z0ZblpZ0 0Z0ZpZpo o0ZpO0Z0 Pm0M0Z0O Z0Z0LNZ0 0O0Z0OPZ S0S0Z0J0

717 8

b

719

rZ0Z0s0j Z0S0ZRo0 bZ0ZpM0o Z0ZpZpZP pZ0O0J0Z OpZ0OPO0 0O0Z0Z0Z Z0Z0Z0Z0 a

Rook on the 7th or the 2nd rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ lbZnapop pZ0o0m0Z Z0Z0o0A0 0ZBOPZ0Z Z0Z0ZNZP 0Z0MQOPZ ZRS0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

721 8 7 6 5 4 3 2 1

724

rZ0s0akZ ZbZ0Zpop pl0Z0Z0Z ZpZpM0Z0 0Z0ONZ0Z OQZ0Z0O0 0O0ZROPZ Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZrZ0j0s ZQZ0apop pZ0ZbZqZ Z0Z0ZpZ0 0Z0S0A0Z ZNZ0Z0Z0 PO0Z0ZPO Z0Z0S0J0 a

722 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

726

rZ0Z0ZkZ oRZ0Zpa0 0Z0spZpo Z0Z0O0Z0 0Z0m0O0Z Z0Z0A0Z0 0Z0ZBO0O Z0S0Z0J0 a

c

rZ0Z0Z0s opZbZpj0 0Z0o0l0o O0ZPm0oB 0O0ZPo0Z Z0S0Z0ZP 0Z0M0OPZ Z0SQZ0J0

723 8

b

725

0Z0Z0Z0Z Z0Z0Zpjp 0L0o0ZpZ Z0ZPl0Z0 0Z0ZPZ0O Z0Z0Z0O0 rZ0ZrOBZ Z0Z0ZRJ0 a

Rook on the 7th or the 2nd rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0ZkZ ZRZ0ZpZp 0Z0o0ZpZ ZNZPa0Z0 0ZRZPo0Z Z0Z0ZPZ0 rZ0Z0O0O Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

727 8 7 6 5 4 3 2 1

730

0Z0Z0Z0Z Z0s0Z0jp 0L0Z0opZ ZBZ0lnZ0 PZ0Z0Z0Z Z0Z0O0Z0 0Z0Z0ZPO Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0s0Z S0l0Z0jp 0ZNo0ZpZ Z0ZPo0m0 0ONZnZ0Z Z0ZBZ0Ob 0ZQZ0Z0O Z0Z0Z0ZK a

728 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

732

0ZbZ0snj Z0Z0l0ap 0L0o0ZpZ Z0oPo0Z0 0ZPZpZ0Z ZNZ0Z0Z0 0Z0ABOPO S0Z0Z0J0 a

c

0Zbl0snj Z0Z0Z0Zp RZ0o0m0a Z0oPopZ0 0ZPZ0Z0Z ZNM0ZPZ0 0ZQABZPO Z0Z0Z0J0

729 8

b

731

0ZbL0arj Z0Z0Z0Zp 0Z0o0m0Z Z0oPoqZ0 0ZPZpZ0Z Z0Z0A0O0 0Z0MBO0O S0Z0Z0J0 a

Rook on the 7th or the 2nd rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0ZkZ opo0Zpop 0ZBZ0Z0Z a0Z0Z0Z0 0Z0Z0O0Z Z0O0s0ZP PO0M0ZPZ S0ZKZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

733 8 7 6 5 4 3 2 1

736

rZbs0ZqZ o0ZnZ0ak 0ZRM0Zpo Z0Z0o0Z0 0Z0ZPo0Z A0Z0ZNZP 0Z0ZQOPZ Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0skZ Z0Z0Z0Zp pZ0Z0Z0Z Z0a0ZpZ0 0o0Z0Z0Z Z0Z0mPZP POPZ0Z0Z Z0JRS0Z0 a

734 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

738

rZrZ0ZkZ Zbl0Zpop 0o0ZpZ0Z Z0m0M0Z0 pZ0S0O0Z O0O0Z0Z0 BOQZ0ZPO J0ZRZ0Z0 a

c

0ZrZ0skZ ZbZ0Z0Z0 pl0Z0Z0Z Z0ZpO0M0 0onZPZPZ Z0ZRZ0Z0 POPZQZ0Z ZKZ0ZBZR

735 8

b

737

rZ0Z0ZkZ Zpoblna0 0Z0o0opZ Z0OPo0Zp rONZPZ0Z Z0Z0ZPZP 0Z0ZBAPZ ZRZQJ0ZR a

Rook on the 7th or the 2nd rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0s0j S0Z0Z0Sp pZ0ZrZbZ ZpZpZ0A0 0Z0Z0o0O Z0O0ZPZ0 PZ0Z0ZPJ Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

739 8 7 6 5 4 3 2 1

742

0Zrs0mkZ Z0Z0Zpop poqZ0Z0Z Z0ZpZQZ0 0Z0O0ZNO Z0Z0S0O0 PO0Z0OKZ Z0Z0S0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZbZ0s0j ZpZ0Z0Zp pZ0ZpspZ Z0ZpM0ln 0Z0O0Z0Z Z0Z0ZPZ0 PO0Z0ZPO ZBSQS0J0 a

740 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

744

0ZqZ0ZkZ ZpZ0Zrop pS0ApZ0Z Z0ZpO0Z0 PZ0Z0Z0Z Z0Z0ZPmP PZrZ0ZPJ Z0ZQS0Z0 a

c

0Z0Z0s0j S0Z0Z0Zp pZ0Z0M0Z ZpZ0obZ0 0O0Z0oPZ Z0Z0Z0Z0 0Z0ZrO0O Z0Z0ZRJ0

741 8

b

743

0ZrZ0Z0Z opZ0Z0ok 0Z0LPZ0Z Z0ZpZbZn 0Z0l0Z0Z Z0Z0ZPZ0 PO0Z0Z0O S0A0ZRZK a

Rook on the 7th or the 2nd rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0Zrj Z0ZRS0ap 0Z0Z0Z0Z Z0Z0ZpZ0 pZBZ0O0Z ZPZ0Z0O0 0Z0ZQZKO Z0l0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

745 8 7 6 5 4 3 2 1

748

0s0Z0ZkZ Z0Z0Zqo0 pZ0Zpm0o Z0Z0SpZ0 0ZpOPO0Z Z0O0Z0ZP rZ0M0ZPZ Z0L0Z0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0Z0skZ Z0o0Z0a0 0ZPo0mqZ ZRZPo0op RZ0ZPo0Z Z0ZQZPZ0 0Z0ZBAPO Z0Z0Z0J0 a

746 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

750

rs0Z0ZkZ Z0Z0Apa0 0ZpZ0ZpZ Z0Z0Z0Zp 0Z0ZpZ0O Z0ZbO0O0 0Z0Z0OBZ Z0SRZ0J0 a

c

rZ0Z0s0Z Z0ZRZpjp 0Z0ZRZpZ o0Z0Z0Z0 0l0Z0Z0Z Z0m0ZQZ0 PO0Z0OPO Z0Z0Z0J0

747 8

b

749

rZ0Z0Z0Z Z0ZkZ0o0 0Z0Z0opZ ZpZPZ0Z0 0apZ0Z0Z Z0Z0ZRA0 0O0ZrOPO ZKZRZ0Z0 a

Rook on the 7th or the 2nd rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0Z0Z ZpZ0Z0jp 0Z0Z0ZpZ o0Z0ZqZ0 Pm0Z0O0Z Z0Z0Z0ZP 0OPL0Z0Z Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

751 8 7 6 5 4 3 2 1

754

rZrl0ZkZ ZpZ0ZpZ0 pZ0Z0O0o Z0ZpZpoP PZ0O0Z0Z Z0O0S0O0 0Z0Z0O0Z ZRZQZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0ZkZ ZqZnS0ap pZ0o0ZpZ Z0ZPZpZ0 0O0Z0Z0Z Z0ZBZpZP 0Z0A0OPZ Z0L0Z0J0 a

752 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

756

rZ0Z0skZ o0obZ0op 0Zpo0m0Z l0Z0Z0M0 0ZPM0O0Z Z0ZQZ0ZP PO0Z0ZPZ Z0Z0SRJ0 a

c

0ZbZ0ZkZ Z0Z0Zqo0 pZ0s0m0o Z0ZpZ0Z0 0Z0A0Z0Z ZRO0Z0LP PZ0MrZPZ Z0ZRZ0J0

753 8

b

755

0Z0Z0ZkZ Z0ZRS0o0 pZpZ0ZrZ ZpZ0Z0Zp 0Z0Z0Z0O Z0Z0ZPZ0 POrZ0ZPZ Z0Z0Z0J0 a

Rook on the 7th or the 2nd rank

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0Z0Z Z0Z0Zbjp 0oQZ0ZpZ l0ZpZ0Z0 0Z0O0Z0Z s0OBZ0Z0 0Z0Z0OPZ ZRZ0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

757 8 7 6 5 4 3 2 1

760

0ZrZ0ZkZ o0Z0Zpop bo0Z0Z0Z Z0opZ0l0 0O0O0Z0s ZPZ0O0O0 0AQZ0O0O Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0lrakZ o0Z0ZpZp 0ZpZpZpZ Z0mpO0M0 0ZbZ0OQZ Z0Z0O0Z0 PABZ0ZPO Z0ZRZRJ0 a

758 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

762

rZbmrl0j ZpZpZ0Zp 0opZ0ZpZ Z0Z0Z0ZR 0ZBO0Z0Z Z0ZQZ0Z0 PO0A0OPO Z0Z0Z0J0 a

c

rZ0lrZkZ ZbopZpop 0o0a0Z0Z oPZ0Z0Z0 0ZPZ0Z0Z O0MQO0Z0 0Z0ZROPO Z0A0ZRJ0

759 8

b

761

0sbZrZkZ o0o0lpop 0Zpa0Z0Z Z0Z0Z0Z0 0ZPZ0ZnZ Z0Z0O0O0 PA0ZBO0O S0LNZRJ0 a

Sacrifice on h7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmbl0skZ opZ0Z0ap 0m0o0ZpZ Z0oPZ0M0 0Z0Z0O0Z Z0MBZ0Z0 PO0Z0ZPO S0AQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

763 8 7 6 5 4 3 2 1

766

0Zbs0Z0j opo0l0Zp 0Zns0M0Z Z0Z0Z0Z0 0ZBO0S0Z Z0Z0ORZ0 PZ0Z0ZQO Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rmbl0s0j opZnoPap 0Z0o0Z0Z Z0Z0O0Z0 0Z0Z0O0Z Z0o0ZNZ0 POPZ0ZPZ S0AQJBZR a

764 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

768

rZbl0skZ Zpo0Zpop 0Z0Zpa0Z o0Z0Z0Z0 0m0O0Z0O Z0ZBZNZ0 POPAQOPZ Z0JRZ0ZR a

c

rZ0Z0skZ opZnZpop 0Z0lpZ0Z Z0ZnM0O0 bZ0O0Z0Z O0ZBZQZ0 0Z0A0O0O ZRZ0S0J0

765 8

b

767

rm0l0skZ opoba0op 0Z0Zpo0Z Z0ZpO0Z0 0Z0O0Z0O Z0MBZNZ0 POPZ0OPZ S0ZQJ0ZR a

Sacrifice on h7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZbskZ ZpZ0Z0op pZnlpZ0Z Z0mpZ0Z0 0Z0Z0O0Z O0MBZNZ0 0OPL0ZPO Z0Z0SRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

769 8 7 6 5 4 3 2 1

772

0Z0ZrZkZ Z0l0ZrZp pZ0ZbL0Z ZpZ0Z0Ap 0Zno0Z0Z Z0Z0Z0Z0 POBZ0OPZ Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrakZ ZqZ0Zpop 0ZRs0Z0Z ZpZPZBZ0 0ZbZPS0Z o0Z0Z0O0 0Z0Z0O0O A0L0Z0J0 a

770 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

774

rZ0ZqskZ opZ0Z0op 0Z0ZpZ0Z ZPZnZBa0 0Z0O0Z0Z S0Z0ZQZ0 0O0A0OPO Z0Z0ZRJ0 a

c

rZbZrZkZ opZ0Zpop 0Z0Z0A0Z Z0ZQO0Z0 0Z0l0Z0Z Z0ZBZ0Z0 Pa0Z0OPO Z0Z0SRJ0

771 8

b

773

rm0l0skZ obZpZpop 0Z0ZpZ0Z Z0onO0Z0 0apZ0Z0Z Z0M0ZNZ0 PO0Z0OPO SBAQJ0ZR a

Sacrifice on h7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0s0ZkZ ZpZblpop pZnMpZ0Z Z0Z0O0Z0 0ZPZ0m0Z Z0ZBZNZ0 PO0Z0ZPO ZKZRL0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

775 8 7 6 5 4 3 2 1

778

rZqZ0skZ opo0S0op 0mbo0Z0Z Z0ZpZ0A0 0ZPZ0ZPZ Z0ZBZ0ZP PZPZ0O0Z ZRZQZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0skZ obZ0lpop 0onZ0Z0Z Z0ZpO0Z0 0Z0Z0L0Z Z0ZBZNZ0 PZ0Z0OPO Z0ZRS0J0 a

776 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

780

rZ0l0skZ o0ZnZpop 0o0Zpm0Z Z0ZpM0A0 0ZbO0O0Z Z0OBZ0Z0 PZ0Z0ZPO S0ZQZRJ0 a

c

rZbZ0skZ opZ0Zpop 0ZnapZ0Z l0Z0Z0Z0 0Z0O0Z0Z ZRZBZNZ0 PZ0Z0OPO Z0AQZRJ0

777 8

b

779

0Zrl0skZ obZ0Zpop 0o0Z0Z0Z Z0ZpO0Z0 0Z0Z0L0Z Z0ZBZNZ0 Pm0Z0OPO Z0ZRS0J0 a

Sacrifice on h7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ Z0Z0Z0op pZnZpO0Z Zpm0Z0Z0 0Z0Z0l0Z Z0MBS0Z0 PO0ZQOPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

781 8 7 6 5 4 3 2 1

784

rmbl0skZ opZ0apop 0Z0Z0Z0Z Z0opO0Z0 0Z0Z0Z0Z Z0OBZNZ0 POPZ0ZPO S0AQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZnskZ lpZ0Zpop pZnZpZ0Z ZbM0A0Z0 0Z0Z0Z0Z Z0SBZ0L0 POPZ0ZPO Z0Z0ZRJ0 a

782 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

786

rZbs0ZkZ Zpl0Zpop pZ0ZpO0Z Z0Z0Z0Z0 0m0Z0OPZ ZNoBZ0Z0 POPZ0L0O Z0JRZ0S0 a

c

0Zrs0ZkZ o0l0apop 0o0ZpZ0Z m0ZnZ0ZP 0Z0O0Z0Z Z0Z0ZQZR PZ0ZNOPZ ZBARZKZ0

783 8

b

785

rZbZ0skZ Z0lpapop pZpZpZ0Z Z0OnZ0Z0 NZ0A0O0Z Z0ZBZ0Z0 PO0Z0ZPO S0ZQZRJ0 a

Sacrifice on h7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrakZ opl0Zpop 0ZbZpA0Z Z0Z0Z0Z0 0Z0Z0ZQZ ZPZBZ0ZP PZPZ0OPZ S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

787 8 7 6 5 4 3 2 1

790

rZ0l0skZ Z0ZnZpop 0Z0Z0Z0Z ZpaPZ0O0 pZNZ0Z0O OnABOQZ0 0Z0Z0O0Z S0Z0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0skZ obZnZpop 0lpZpZ0Z Z0Z0O0a0 0o0OBZ0Z Z0Z0ZNZ0 PO0Z0OPO S0ZQZRJ0 a

788 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

792

rZ0l0skZ opZ0Zpop 0Zpm0Z0Z Z0ZpS0Z0 0Z0O0A0a Z0ZBZ0L0 POPZ0OPO S0Z0Z0J0 a

c

rZ0Z0skZ ZpZ0Zpop pZ0Zba0Z Z0Z0SBZ0 0Z0Z0S0Z lNO0Z0Z0 PZ0Z0ZPO Z0Z0L0J0

789 8

b

791

rZbl0skZ o0Znapop 0o0ZpZ0Z Z0opO0Z0 0Z0Z0A0O Z0OBO0Z0 PO0M0OPZ S0ZQJ0ZR a

Sacrifice on h7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmqZrZkZ ZbZ0Zpop pZ0Z0a0Z ZpoPM0Z0 0Z0ZBA0Z Z0Z0ZQO0 PO0Z0O0O S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

793 8 7 6 5 4 3 2 1

796

0Z0s0skZ apl0Zpop pZbZpZ0Z Z0O0Z0Z0 0O0ZBZ0Z O0Z0ZQZ0 0A0Z0OPO Z0S0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0snskZ ZbZ0Zpop 0l0ZpZ0Z o0Z0O0O0 0o0M0Z0Z Z0ZBL0Z0 POPZ0Z0O Z0JRZRZ0 a

794 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

798

0lrsbakZ ZpZnmpop pZ0ZpZ0Z Z0Z0O0Z0 0ZPZ0Z0Z ZPM0M0Z0 PA0ZQZPO ZBZ0SRZK a

c

0Z0s0skZ Z0oqmpop pZ0Z0Z0Z ZpZpO0Zb nO0Z0Z0Z Z0O0ZNZ0 PZBZ0OPO S0AQS0J0

795 8

b

797

rm0lrZkZ ZpZ0apop pZ0ZpZ0Z Z0ZpO0Z0 PZ0O0A0Z Z0SBZQZP 0O0Z0OPZ S0Z0Z0J0 a

Sacrifice on h7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ Z0opapop 0o0m0Z0Z o0mPZ0Z0 0Z0Z0A0Z Z0Z0ZNZ0 POBM0OPO Z0SQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

799 8 7 6 5 4 3 2 1

802

0s0Z0skZ Zpl0Zpop pm0a0Z0Z ZRZ0Z0A0 PZpO0Z0Z Z0Z0ZQZP 0ZBZ0OPZ Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0ZrskZ Z0l0Zpop pZbZpZ0Z ZpZpO0A0 0ZnZ0Z0Z O0OBZ0Z0 0O0ZQOPO S0Z0S0J0 a

800 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

804

rZ0Z0skZ Z0Z0Zpop bl0ZpZ0Z Z0a0L0Z0 RZ0Z0Z0Z Z0OBZ0Z0 0O0Z0ZPO Z0A0ZRZK a

c

rZbZrZkZ opZ0Zpop 0Z0ZpA0Z Z0l0O0Z0 0Z0Z0Z0Z Z0ZBZ0Z0 PZ0Z0OPO Z0ZQZRJ0

801 8

b

803

rZbZ0skZ Zpl0Zpop pZ0o0Z0Z Z0ZPm0a0 PZPZ0Z0Z Z0ZBZNL0 0Z0Z0ZPO ZRZ0ZRZK a

Sacrifice on h7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZbZrskZ Z0l0Z0op pZ0SpZ0Z Z0o0O0Z0 0mPZBZPZ ZPZ0ZNZ0 0Z0Z0L0O Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

805 8 7 6 5 4 3 2 1

808

0s0s0ZkZ obZQZpop 0Z0ZpZ0Z Z0l0Z0Z0 0Z0ZBZ0Z Z0Z0O0Z0 0O0M0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZrmkZ obl0a0op 0opZpo0Z Z0Z0M0Z0 0ZPO0ZQZ Z0ZBZ0Z0 PO0A0OPO S0Z0S0J0 a

806 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

810

rZ0lrakZ Z0Z0Zpop pm0o0Z0Z mpZ0O0O0 0Z0o0Z0Z Z0Z0ZNZ0 POBZ0OPZ S0AQS0J0 a

c

0j0Z0srZ ZbZ0Z0Zp pl0apZ0Z ZpZ0Z0Z0 0Z0Z0ZnZ Z0Z0Z0O0 0ZQZBO0O Z0SNMRJ0

807 8

b

809

rm0Z0skZ opZbopap 0lpZ0ZpZ Z0Z0O0M0 PO0OBZ0Z Z0O0A0Z0 0Z0ZQZPO S0Z0ZRJ0 a

Sacrifice on h7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblrmkZ opZnapop 0ZpZpZ0Z Z0ZpM0Z0 0Z0O0A0Z Z0OBO0ZP POQM0O0Z S0Z0J0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

811 8 7 6 5 4 3 2 1

814

rZrZ0ZkZ Z0Z0Zpo0 pZ0ZpZ0o lpZbO0Z0 0Z0Z0Z0Z ZPaBA0Z0 PZPZQZPO ZKZRZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Zrs0j0Z o0Z0apo0 0ZpZpm0o ZpZqZPA0 0Z0O0ZPZ Z0ZBL0ZP POPZ0Z0Z ZKZRZ0ZR a

812 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

816

0Z0ZqZ0j Z0Z0Z0o0 0o0Zps0o Z0s0Z0Z0 0ZPZQA0Z Z0Z0Z0ZR 0mPZ0ZPO Z0Z0ZRZK a

c

rZblrZkZ Zpm0apo0 pZpZ0m0o Z0OpM0Z0 0O0O0Z0Z Z0ZBZNZP PZ0A0OPZ Z0LRS0J0

813 8

b

815

0ZrlrZkZ opZ0apo0 0Z0Zpm0o Z0Z0M0A0 bZ0O0Z0Z Z0OBZ0ZQ PZ0Z0OPO S0Z0S0J0 a

Sacrifice on h6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0a0s0m0j opZrZpo0 0ZpZ0Z0o l0ZpZ0ZP 0Z0Z0Z0Z ZBO0ZQO0 PO0Z0O0Z Z0ARS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

817 8 7 6 5 4 3 2 1

820

rZ0Z0skZ obopl0o0 0o0Z0Zno a0ZPZpZ0 0ZPZ0ONZ ZRZBZ0Z0 PA0Z0ZPO Z0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZrZ0ZkZ oRZ0Zbo0 qmnZ0o0o Z0ZpZNZ0 0ZpO0Z0Z a0O0ZBAP PZ0L0OPM Z0Z0S0J0 a

818 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

822

rZ0l0skZ Z0a0mpo0 0opobZ0o o0Z0O0ZQ 0Z0O0Z0Z O0Z0ZNZ0 0ZBZ0OPO S0A0S0J0 a

c

rZ0ZrakZ m0lnZ0o0 pZ0o0Z0o ZpZbo0Z0 PO0ZNZ0M Z0Z0Z0Z0 0Z0ZQOPO SBA0S0J0

819 8

b

821

rZrl0ZkZ ZpZbZpap nZ0o0ZpZ Z0ZPo0Z0 BO0ZPm0Z Z0M0A0ZP RZ0ZNOPZ ZQZ0ZRJ0 a

Sacrifice on h6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ ZpZnapo0 0Z0ZpZ0o o0ZpO0Zb 0Z0O0A0Z ZPZBLNZP PZ0Z0OPZ ZRZ0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

823 8 7 6 5 4 3 2 1

826

0s0ZrakZ Zbl0Zpop pZ0o0Z0Z Z0m0ZNO0 0o0APZ0O Z0ZBZ0Z0 POPL0Z0Z ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0l0skZ Z0o0apop 0Z0ZbZ0Z ZpZpO0Z0 pZ0O0Z0Z Z0Z0Z0ZP POBA0OPZ S0ZQS0J0 a

824 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

828

rmbZ0skZ opZ0a0o0 0l0ZpZ0o Z0ZpO0Z0 0Z0O0Z0Z Z0ZBZNO0 POQZ0ZKO S0A0Z0ZR a

c

rZ0lrZkZ o0Z0apoN 0o0ZpZ0o m0ZbZ0ZQ 0Z0O0Z0O Z0OBZ0Z0 PZ0Z0OPZ S0A0S0J0

825 8

b

827

0ZrZ0skZ o0Z0Zpo0 0o0ZpZ0o Z0ZpO0Z0 0Z0Z0ONL Z0ZpZNZ0 PZqZnZPO Z0ZRZRZK a

Sacrifice on h6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rlrZ0ZkZ obZnZpo0 0o0ZpZ0o Z0ZnZ0A0 0Z0O0Z0Z Z0OBZNZ0 PZ0L0OPO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

829 8 7 6 5 4 3 2 1

832

0ZrsbZkZ opZ0Zpo0 0Znapm0o l0Z0Z0Z0 0Z0O0Z0Z O0M0A0ZP BO0LNOPZ Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZrZ0ZkZ Zbl0Zpo0 0o0ZpZno o0Z0O0AQ 0ZPZBZ0Z Z0Z0Z0ZR PZ0Z0OPO Z0Z0S0J0 a

830 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

834

rZ0Zraqj ZpZ0Z0o0 pZ0Z0oQo Z0Z0o0ZR PZ0ZPZ0Z Z0ZPZRZ0 0O0A0ZPO Z0Z0Z0ZK a

c

qZ0Z0a0Z ZbZpZpj0 0Z0ZpMpo opZ0O0Z0 0Z0ZRZ0L ZPZrZNZP PZ0Z0OPZ Z0Z0Z0J0

831 8

b

833

rm0ZrZkZ ZpZ0lpo0 pZ0Z0a0o Z0Z0ZPZQ 0Z0o0Z0Z ZBZ0Z0ZR POPZ0O0O S0A0ZKZ0 a

Sacrifice on h6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ Zblpmpo0 0ZnZpZ0o ZRZ0O0Z0 pZ0M0A0Z O0Z0Z0OP 0O0L0OBZ Z0S0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

835 8 7 6 5 4 3 2 1

838

rZ0s0ZkZ ZpZbapo0 pZ0opm0o l0Z0Z0A0 0Z0LPOPO Z0M0ZBZ0 POPZ0Z0Z Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0skZ Z0Z0apo0 pZ0ZpZ0o ZpZnO0Z0 0Z0ZNA0Z Z0Z0ZQZ0 POqZ0ZPO Z0Z0SRZK a

836 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

840

rZbl0skZ opo0Z0o0 0Z0ZpZ0o a0ZnMpZQ 0Z0O0Z0Z O0OBZ0Z0 0ZPA0OPO S0Z0S0J0 a

c

rZ0s0ZkZ ZpZ0Zpo0 0Z0ObZ0o o0Z0Z0ZQ 0a0S0Z0Z ZqZNA0Z0 0O0Z0OPO Z0S0Z0J0

837 8

b

839

bZ0l0skZ s0Znapon pZ0Z0Z0o ZpZpM0Z0 0ZpO0APZ O0M0OPZQ 0OBZ0Z0O Z0ZRZRJ0 a

Sacrifice on h6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0s0j o0Z0Zpo0 0Z0Zpm0o Zpa0M0Z0 qZ0Z0Z0Z Z0O0Z0L0 0O0A0OPO ZBJRS0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

841 8 7 6 5 4 3 2 1

844

0ZnZ0s0j Z0l0Z0o0 rZpZ0o0o Zpm0oPZP 0Z0Z0Z0Z ZPO0ZQZ0 0ZBZ0OPZ Z0ARS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0s0skZ ZpZ0apo0 pZqZ0Zno Z0ZpZBZQ PZ0Z0Z0Z ZPZ0ARZ0 0ZPZ0ZPO Z0ZRZ0ZK a

842 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

846

rZ0l0skZ Z0opZ0o0 0Z0ZpZ0o ZpZnO0Z0 0ZbZBZ0Z Z0O0Z0O0 PZQZ0O0O S0ARZ0J0 a

c

0Z0s0ZkZ obs0Zpo0 0o0Z0m0o Z0ZqMpZ0 0Z0O0Z0Z O0O0ZPZR 0Z0A0ZPO S0Z0L0J0

843 8

b

845

rZbl0skZ opZ0Zpo0 0mpa0m0o Z0Z0Z0Z0 0Z0O0Z0Z ZBM0ZNZP POQZ0OPZ S0A0ZRJ0 a

Sacrifice on h6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ Z0l0Z0o0 bZnZ0o0o o0ZpZPZ0 0o0a0ZBL Z0Z0Z0ZR POPZ0ZPO Z0ANS0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

847 8 7 6 5 4 3 2 1

850

rl0Z0skZ opZbZpo0 0Z0o0Zno Z0oPZ0ZQ PZPZPA0Z Z0OBZ0Z0 0Z0Z0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0s0ZkZ o0Z0apo0 qZpZpm0o ZpOrZ0Z0 0Z0O0Z0S ZPZ0ZNO0 PZQA0OKO Z0Z0S0Z0 a

848 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

852

rZ0lrZkZ obZnapo0 0opZ0m0o Z0Z0ZNA0 0Z0ONZ0Z O0Z0Z0O0 0O0Z0OBO S0ZQZRJ0 a

c

rZrl0ZkZ obZ0mpo0 0o0Zpm0o ZPZ0M0Z0 0O0O0A0Z Z0ZBL0Z0 0Z0Z0OPO S0Z0S0J0

849 8

b

851

rZ0Z0skZ lbZnZpo0 pa0ZpZ0o ZpZnZ0Z0 PO0Z0A0L Z0MRZNO0 0Z0ZPOBO Z0Z0ZRJ0 a

Sacrifice on h6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrmkZ ZpZ0apo0 pZ0Z0Z0o l0Z0oNZ0 0ZBZ0A0Z Z0O0O0Z0 PZQZ0OPO ZRZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

853 8 7 6 5 4 3 2 1

856

rZ0s0ZkZ opl0apo0 0Zbopm0o Z0Z0Z0A0 0Z0MPZ0Z Z0M0Z0Z0 POPL0OPO ZKZRS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0skZ obZ0apo0 0o0Zpm0o Z0ZqM0A0 0Z0O0Z0L Z0Z0ZPZ0 PO0Z0ZPO ZBZRZ0J0 a

854 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

858

0ZrZrmkZ ZbZ0apo0 0lnZpZ0o opZpO0Z0 0Z0O0ZNO Z0Z0ZNOB PO0A0O0Z S0ZQS0J0 a

c

rZbs0ZkZ o0l0Zpo0 0Z0ZpZno Z0opO0ZQ 0ZnZ0Z0Z Z0OBZNZ0 0ZPZ0OPO S0A0S0J0

855 8

b

857

rZ0l0s0j o0o0mpo0 0o0ZpZ0o m0ZpO0ZN 0Z0O0ZPO ObO0ZPZ0 0Z0Z0L0Z SBA0J0ZR a

Sacrifice on h6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbs0ZkZ o0l0a0o0 0mpZ0oPo ZpZnZPZ0 0Z0ZNZ0Z Z0ZNZQZ0 POPA0Z0O Z0JRZBS0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

859 8 7 6 5 4 3 2 1

862

rZ0l0skZ Zpo0Z0o0 pZna0m0o Z0ZpZ0Z0 0Z0O0Z0Z Z0O0ZNZN POQZ0ZPO S0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0skZ o0lbapo0 0o0Zpm0o mPZpM0A0 0Z0Z0Z0L Z0OBONZ0 PZ0Z0OPO S0Z0ZRJ0 a

860 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

864

rZ0l0skZ ZbZpmpo0 pZ0Z0Z0o ZpZnM0Z0 0Z0Z0Z0Z ZBZ0Z0Z0 PO0Z0OPO S0AQS0J0 a

c

0Z0ZrskZ opZnlpo0 0ZpapZ0o Z0Z0Z0ZQ 0Z0O0Z0Z Z0OBZ0O0 PO0Z0O0Z S0A0S0J0

861 8

b

863

rZ0l0ZkZ ZbZ0a0o0 0Z0Zps0o Z0opZ0Z0 0Z0Z0Z0Z ZPZQZNZR 0ZPZ0OPO Z0A0S0J0 a

Sacrifice on h6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZnl0akm ZrZ0Zpo0 0o0o0Z0o ZNoPoQZP 0ZPZPZNZ ORZ0A0O0 0Z0Z0OKZ S0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

865 8 7 6 5 4 3 2 1

868

rZ0ZrZkZ opZ0Zpo0 0Z0o0Z0Z Z0l0Z0Zp 0ZPZ0Z0Z ZPA0ZQZP nZ0Z0OPZ Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0l0Z0skZ ZpZ0Lpop pZbZ0Z0Z Z0Z0Z0Z0 0Z0A0Z0Z ZPZ0Z0O0 PZrZPO0O S0ZRZ0J0 a

866 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

870

rZ0Z0skZ Z0ZqZ0op 0Z0ZpZ0Z Z0ZnApZ0 bZBM0Z0Z Z0Z0Z0Z0 0OPZQOPO Z0Z0ZRJ0 a

c

0Z0Z0skZ opZ0Zpop 0Z0Z0Z0Z Z0m0AQZ0 0ZqZ0Z0Z Z0Z0ZPO0 PZnZ0Z0O Z0ZRS0J0

867 8

b

869

rZ0Z0skZ Z0l0apop pZbopZ0Z Z0Z0ZPO0 0o0APZ0Z ZPM0Z0Z0 0OPZQZ0O Z0JRZ0S0 a

Sacrifice on g7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opZ0apo0 0Z0ZpZ0o Z0oPA0ZP 0ZPZ0ZnZ Z0ZQZ0M0 PO0Z0OPZ Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

871 8 7 6 5 4 3 2 1

874

rZbZ0skZ opZnZpo0 0Z0ZpZ0o l0Z0A0Z0 0Z0Z0O0Z Z0ZBZ0Z0 PZPZQZPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0s0ZkZ Z0l0apop pZnZbZ0Z Zpm0oNM0 0ZpZPZ0Z Z0O0Z0ZP POBZQOPZ S0A0S0J0 a

872 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

876

rm0Z0skZ opl0Zpop 0Zpa0mbZ Z0Z0ZNZ0 0ZBO0Z0Z Z0Z0Z0Z0 POPZNZPZ S0A0LRZK a

c

rZ0Z0snj Z0lnZpop pZ0Z0Z0Z Z0aPoNZ0 0o0Z0Z0Z Z0ZBZ0Z0 POPZ0ZPO S0A0LRZK

873 8

b

875

rZ0Z0skZ Z0ZbZpop pZ0OpZ0Z l0ZnZ0Z0 No0A0ZPZ ZPZ0Z0S0 0OPL0O0O Z0JRZ0Z0 a

Sacrifice on g7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0skZ Z0m0a0op pZ0Zbo0Z l0o0A0ZN 0Z0Z0ZPZ Z0OPZ0ZP PZ0L0ZBZ S0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

877 8 7 6 5 4 3 2 1

880

rZbZ0j0Z opZqaps0 0ZpZ0m0Z O0Z0o0Z0 0OBZPo0o ZQO0Z0ZP 0Z0MNOPZ Z0ZRS0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

ra0l0skZ opZ0Zpo0 0m0ZbZ0o Z0ZpZNZ0 0Z0OnO0Z Z0M0Z0O0 POQZ0ZBO S0A0ZRJ0 a

878 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

882

rZbZ0skZ o0Z0Zpop 0o0Z0Z0Z Z0lpONZ0 0SPZ0L0Z O0Z0Z0Z0 0Z0Z0OPO Z0Z0ZRJ0 a

c

0Z0Z0j0Z Z0l0Z0op pm0Z0ZbZ ZpopZNL0 0Z0Z0Z0Z ZPO0ZrO0 PZBZ0Z0O Z0Z0S0J0

879 8

b

881

rZ0Z0ZkZ Z0Z0Zpop pZbmqm0Z ZpZ0ZNZ0 0O0A0Z0Z Z0Z0ZPZP PZBZ0ZPZ S0ZQZ0J0 a

Sacrifice on g7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZrZkZ oplbZpo0 0Z0Z0Z0o m0ZRZNZ0 0a0Z0Z0Z Z0M0A0O0 POQZPO0O Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

883 8 7 6 5 4 3 2 1

886

0mrlrZkZ o0Z0apop 0Z0Z0m0Z Z0ZPZNZ0 0ZpZ0Z0Z Z0Z0M0O0 PA0L0OBO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0skZ o0ZnZ0o0 0l0Lpm0o ZPZ0Z0Z0 PZ0Z0Z0A Z0o0Z0Z0 0ZBZKO0O S0Z0Z0S0 a

884 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

888

rZ0ZrmkZ ZpZ0Zpo0 pZblpm0o Z0Z0Z0SP 0Z0O0Z0Z S0Z0ZNZ0 0O0A0OPZ ZBZ0L0J0 a

c

0Zqs0s0j Z0Z0apo0 pZ0Zpm0o ZbZpZ0S0 0Z0ZPO0Z Z0ABZ0MQ 0OPZ0ZPO Z0Z0ZRZK

885 8

b

887

rZ0l0Zks Z0onZpo0 pZ0o0m0o ZpaPoNZ0 0Z0ZNZPA Z0OPZQZ0 PO0Z0O0O S0Z0J0ZR a

Sacrifice on g7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZbZ0s0j Z0opZ0o0 0Z0m0o0Z Z0L0Z0Zp 0ZPZ0Z0Z Z0ZBOPS0 0A0OKO0l Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

889 8 7 6 5 4 3 2 1

892

rZ0Z0skZ Zbl0apo0 pZ0o0ZRZ ZpmBmpZ0 0Z0ZPZ0Z Z0M0A0Z0 POPZQO0O Z0JRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0s0mkZ Z0o0Z0o0 pZPZpl0o ZpZbMpZQ 0Z0O0O0a Z0ZBA0Z0 PO0Z0Z0O Z0JRZ0S0 a

890 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

894

rZbl0ZkZ opZ0m0op 0Z0Zps0Z Z0ZpZPZQ 0Z0O0Z0Z O0OpZNZ0 0ZPZ0O0O S0A0J0S0 a

c

0s0Z0skZ Z0ZQZ0op pZ0ZpZ0Z Z0Z0Z0A0 0Z0mpZ0Z Z0Z0Z0S0 PlPZBZ0O Z0ZKZ0S0

891 8

b

893

0ZrZrZkZ opZ0Zpop 0Z0Z0m0Z ZqMpm0Z0 0Z0A0Z0Z Z0Z0ZPZP POPL0O0Z Z0JRZ0S0 a

Sacrifice on g7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s Zbl0Zpa0 pZ0o0m0Z Zpo0mPZ0 0Z0Z0Z0o Z0OBA0ZN PO0LNZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

895 8 7 6 5 4 3 2 1

898

bl0Z0skZ Z0ZnZ0Zp 0Z0Z0ZpZ ZPM0Z0Z0 0Z0o0Z0Z APZ0Z0Z0 0Z0LBOPa Z0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0lrZ0Z0Z Z0Z0jpZQ pZ0Z0s0Z ZpZbo0Z0 0Z0Z0Z0O Z0O0Z0Z0 POBZ0OPZ Z0ZRZRJ0 a

896 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

900

0Z0Zrs0j MbZ0Z0o0 0Z0ZBZ0o Z0o0a0Zq 0Z0Z0o0O O0Z0Z0ZQ 0Z0Z0OPZ ZRZ0S0J0 a

c

0j0ZrZ0s opo0Z0Z0 0Z0a0o0Z Z0ZqZ0op 0Z0O0Z0m O0Z0APZP 0O0Z0ZPZ SQZRZNJ0

897 8

b

899

rZ0Z0skZ opZ0apop 0ZbZpZnZ Z0Z0l0Z0 0OPZ0Z0Z O0M0A0ZP 0ZQZBOPZ S0Z0S0J0 a

Sacrifice on g7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ Zpo0Zpop 0ZnZ0l0Z o0a0o0Z0 0ZNZPm0Z ZBO0ANZP POQZ0OPJ S0Z0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

901 8 7 6 5 4 3 2 1

904

0ZrZ0ZrZ Z0Z0ZpZk pZ0obZ0Z Z0Z0Z0Z0 NL0ZpZ0l Z0Z0O0Z0 PO0Z0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0s0ZbZkZ Z0Z0Zpop pZ0ZNZ0Z l0ZpO0Z0 nZ0Z0L0Z Z0Z0Z0Z0 0sPZ0ZPO SBZ0ZRZK a

902 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

906

rZ0Z0Z0j oponZ0sp 0Z0o0a0l Z0ZPZbZ0 0OPZ0o0Z Z0MBZNZP PZ0Z0OPJ Z0SQZ0S0 a

c

0ZrZrZkZ ZbZqapop pZ0opA0Z Z0m0Z0O0 0o0ZPO0Z ZNMPZ0SQ PO0Z0Z0O ZKS0Z0Z0

903 8

b

905

0Zqa0ZkZ ZpZ0spo0 pZ0o0m0o O0ZPZ0Z0 0ZNZPZ0Z Z0OQA0Z0 0s0Z0ZPO Z0SRZ0J0 a

Sacrifice on g7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0Zrj Z0a0ZpZp BZbZ0Z0Z Z0Zpl0Z0 0Z0ZpZ0Z S0O0Z0ZP QO0Z0OPZ Z0Z0SNJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

907 8 7 6 5 4 3 2 1

910

rl0ZrZkZ Z0Z0Zpo0 pZ0Z0Z0Z Z0Z0aNO0 0o0ZPZ0O Z0Z0ZQZ0 PO0Z0ZKZ Z0Z0ZRZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZrZ0ZkZ ZpZ0S0o0 pZ0ZnZ0o Z0oqZ0Z0 0Z0Z0Z0O ZPZPZ0O0 PA0L0Z0J Z0Z0Z0Z0 a

908 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

912

0Z0Z0akZ l0Z0Zpo0 0Z0o0Z0o ZpZ0oPZn 0O0Z0Z0m ZBOQMPZP 0Z0Z0ZPZ s0A0SKZ0 a

c

0Z0ZrskZ obZ0Zpop 0lpZ0Z0Z Z0ZpZQZ0 0Z0m0Z0Z Z0M0Z0SP POPZ0OPZ Z0A0S0J0

909 8

b

911

rZ0Z0a0j opZbZpop 0Z0ZpA0Z Z0ZqS0Z0 0Z0M0O0Z OPZ0L0SP 0Z0Z0ZPJ Z0Z0s0Z0 a

Sacrifice on g7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZRZ0Z0o0 0Z0Z0Z0o Z0Z0O0Z0 0Z0ZQo0Z Z0O0ZBlb 0ZPZ0ZPZ Z0ZRZKZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

913 8 7 6 5 4 3 2 1

916

rm0Z0skZ opoqZpop 0Z0o0Z0Z Z0Z0m0Z0 0ZBL0Z0Z Z0Z0Z0Z0 PA0Z0O0O S0Z0Z0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZbZ0ZkZ Z0Z0Zpo0 0ZpZ0a0o Z0L0ZPZ0 PZ0ZPl0Z Z0Z0Z0Z0 Ps0Z0ZBO ZRS0Z0J0 a

914 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

918

0Z0Z0Z0Z Z0Z0ZQok pZ0Z0Z0o O0a0Z0Z0 0Z0ZpOnZ Z0OpZ0ZP 0O0AblPZ S0Z0S0ZK a

c

rl0ZrZ0j Z0ZBZpo0 0O0Z0Z0o Z0o0Z0Zn 0ZNo0Z0Z Z0Z0ZbZP 0AQZ0OPa ZRZ0S0ZK

915 8

b

917

0ZbsrZ0j Zpl0Zpop pZ0Z0Z0Z Z0Z0oPZQ 0ZpaPZ0Z ZPZ0Z0SP PZ0Z0ZBJ ZRA0Z0Z0 a

Sacrifice on g7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0m0Z Z0lrZ0ok pZ0ZpZ0m ZpZ0ZpZP 0Z0ZNZ0Z ONZBZPS0 0OPL0Z0Z Z0J0Z0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

919 8 7 6 5 4 3 2 1

922

0Z0s0snj opZnZ0Zp 0lpZ0opZ Z0Z0ZNL0 0Z0ZPZ0Z ZBZRZ0Z0 PO0Z0OPO Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0arZ0Z0j opZ0Z0op 0Z0Z0Z0Z Z0m0l0Zb PZ0Z0Z0Z Z0Z0Z0OP 0O0MnOBJ S0A0MQZ0 a

920 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

924

0Zrs0Z0Z ZpZ0Z0j0 pZ0Z0lpZ Obo0MpZ0 0Z0Z0O0Z Z0Z0S0L0 0Z0Z0ZPJ Z0S0Z0Z0 a

c

rZbZ0skZ opZ0Z0ap 0ZpZ0ZpZ Z0Z0l0Zn NLPZ0Z0O ZPZ0ZNZn PZ0ZPOBZ Z0ARSKZ0

921 8

b

923

0ZrZ0skZ opZ0LpZp 0Z0o0ZpZ Z0Z0Z0Zn 0ZPZ0Z0Z ZPM0Z0Oq PZ0ZPO0Z Z0S0ZRJ0 a

Sacrifice on g6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0ZnZkZ o0sbopZp 0Z0o0ZpO Z0lPZ0O0 0ZPLBS0Z Z0S0O0Z0 0Z0ZNO0Z Z0Z0ZKZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

925 8 7 6 5 4 3 2 1

928

rZ0Zra0j opo0l0op 0Z0Z0Z0Z Z0ZPZ0L0 0Z0Z0M0Z ZPZ0Z0OB PZ0ZbZ0O A0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0s0Z0s o0o0ZpZk 0obZpOpZ Z0Z0O0Z0 0ZPZ0ZQZ Z0ZBZ0Z0 PO0Z0J0O Z0Z0Z0Z0 a

926 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

930

0Z0ZrZ0j o0ZQZ0Zp 0ZpZrZpZ Z0Z0MpS0 0Z0O0Z0Z Z0O0OPZb PZ0Z0l0O Z0Z0Z0SK a

c

0lrZbZkZ Z0s0Zpa0 pZ0ZpZpZ Z0ZnO0M0 0m0ZBZ0L M0Z0Z0Z0 0O0A0OPZ S0Z0ZRJ0

927 8

b

929

bZ0Z0Z0s Z0l0ZkZ0 0Z0ZpOpZ ZpZnZ0Ap 0ZpOBZPO Z0O0ZQZ0 0Z0Z0O0Z Z0Z0S0J0 a

Sacrifice on g6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0s0j ZpZ0ZpZp 0Z0m0O0Z ZpZpM0ZQ 0Z0A0Z0Z ZPZ0Z0Z0 PZ0Z0ZPO S0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

931 8 7 6 5 4 3 2 1

934

0Z0Z0skZ Z0ZbZ0ap 0o0o0ZpZ o0oPl0Zn PZPZBZ0Z Z0M0A0O0 0O0L0Z0O S0Z0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZqZrZ0Z Z0Z0ako0 0Z0onZpZ o0ZBZ0Z0 0obAPZ0Z Z0Z0ZPZQ POPZ0Z0Z Z0J0Z0SR a

932 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

936

rZ0snZkZ Zbl0apZp pZ0Z0ZpZ Z0ZpZ0Z0 0Z0A0O0Z O0MBZ0ZQ 0OPZ0ZPO Z0Z0SRZK a

c

rZbZ0skZ opZnapmp 0Z0Z0ZpA l0Z0o0Z0 0ZBZ0ZRZ Z0M0ONZ0 POQZ0OPO ZKZ0Z0ZR

933 8

b

935

rZ0Z0Zns Zbl0oka0 pm0Z0Zpo ZpZ0opZ0 0Z0Z0Z0M O0MQZ0A0 0OPZBOPO S0Z0S0J0 a

Sacrifice on g6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZ0ZkZ ZpZ0apZ0 pZbopZpZ l0Z0mPZQ 0ZBAPZ0o Z0M0Z0Z0 POPZ0Z0Z Z0J0Z0SR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

937 8 7 6 5 4 3 2 1

940

0s0Z0ZnZ Zqmbo0ak pZ0o0Zpo Z0oPO0Z0 0ZPZ0Z0Z Z0MBA0O0 Rs0LNZ0O Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0j0Z ZbZ0Zpop 0l0ZpZ0Z Zps0ZnZ0 0SPZ0Z0Z Z0ZQZPZ0 0ZPM0ZPO S0Z0Z0ZK a

938 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

942

0ZbZranj s0Z0ZqZp 0o0Zpo0Z o0ZpZ0ZP PZpO0ZNM Z0O0ZQO0 0OBZ0O0Z S0Z0S0J0 a

c

0Z0Z0s0Z Z0Z0Zpj0 qs0ZPapo opoBL0Z0 0Z0Z0Z0Z Z0Z0O0S0 PO0Z0O0O Z0Z0Z0SK

939 8

b

941

rZblrZkZ opZ0Zpop 0ZnZ0a0Z Z0opZ0Z0 0Z0OnZ0Z Z0M0ANOP PO0ZPOBJ Z0SQZRZ0 a

Sacrifice on g6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s ZpZ0lpo0 pZpZ0Z0Z Z0a0o0Zn 0ZBZPZbo Z0M0APZ0 POPZQZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

943 8 7 6 5 4 3 2 1

946

0a0Z0ZkZ ZpmqZrZp 0Z0ZpZpZ ZpOpO0ZQ 0O0Z0Z0A Z0ZBOPZ0 0Z0Z0Z0O Z0Z0Z0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0Z0Z0Z opZbZpj0 0l0o0mpo Z0oPZ0Z0 0ZPZ0Z0Z Z0LBSNZP PO0Z0OPZ Z0Z0Z0J0 a

944 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

948

0Z0s0skZ ZqZ0ZpZp pZ0Z0LpZ Z0Z0O0Z0 0ZBZNZ0S O0Z0Z0OP 0Z0o0ZPJ Z0Z0Z0Z0 a

c

rZ0Z0Z0Z ZbZ0Zpj0 0ZpZrmpo ZpZ0M0Z0 0l0OBL0Z Z0Z0S0Z0 0Z0Z0OPO Z0Z0ZRJ0

945 8

b

947

0ZrZrZkZ ZbZ0apZ0 plpZpo0o ZpZ0M0Z0 PZ0O0Z0Z Z0ZBO0Z0 0OQZ0OPO Z0S0ZRJ0 a

Sacrifice on g6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0Z0s obl0Z0o0 0o0Zpo0Z Z0a0Z0Zn 0ZPZBZ0Z ZPZNZ0Op PA0ZQO0O S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

949 8 7 6 5 4 3 2 1

952

0Z0srakZ Zbl0ZpZp pZ0ZpOpZ Zpo0o0O0 0ZPZPZ0M ZPZPZ0L0 PZ0Z0SBO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0s0j ZpZ0s0op pZnl0a0Z Z0MpZ0Z0 0O0OnZ0Z OQZRZBO0 0A0Z0O0Z Z0Z0ZRJ0 a

950 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

954

0Zrl0ZrZ ZpZ0Zpj0 pmbo0ZpS Z0Z0o0Z0 0Z0MPZ0Z ZPM0LPZ0 PO0Z0ZPZ ZKZ0Z0ZR a

c

rZbZka0s Z0o0ZpZ0 0ZpZ0ZpZ o0mpO0Zp 0ZPZ0Z0O OqZBANL0 0O0Z0OPZ S0Z0ZRZK

951 8

b

953

rZ0Z0skZ o0oqZ0Zp 0o0mbopL m0Z0Z0Z0 0Z0Z0Z0Z A0OBZNZ0 PZPZ0OPO Z0ZRS0J0 a

Sacrifice on g6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0ZkZ ZbZ0ZpZ0 0Z0ZpZpZ Z0ZpS0Zp 0Z0O0Z0Z ZPZ0ZQOP 0Z0Z0OKZ ZBl0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

955 8 7 6 5 4 3 2 1

958

0Z0ZrZkZ S0m0Zpo0 0Zpa0Z0Z ZpZ0ZbZ0 0Z0O0Z0Z ZBO0M0Oq 0O0Z0Z0O Z0AQZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZbZ0skZ Z0Zqm0Zp 0o0o0Zpa Z0oPo0Zn 0OPZPZ0Z A0MBZ0O0 0Z0M0Z0O Z0ZQS0J0 a

956 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

960

rZ0Z0ZkZ o0ZqZrZp 0Z0o0mpa ZpZPo0Zn 0Z0ZPZ0Z M0ABZ0O0 PO0Z0Z0O S0ZQS0J0 a

c

0a0Z0ZkZ ZpZbZpZ0 0m0Z0Zpo ZNZpZ0Zn 0O0Z0ZqZ M0Z0Z0O0 PZ0Z0ZBO Z0ZRL0ZK

957 8

b

959

0Z0Z0skZ o0Z0Z0o0 bopaps0l Z0ZpZ0Z0 POPOpZ0Z Z0Z0O0O0 0ZRZ0OBZ Z0SQA0J0 a

Sacrifice on g6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0lrZkZ opo0ZpZ0 0Z0o0ZpL Z0ZbZ0Zp 0ZPZPZ0Z Z0Z0ZPZ0 PO0ZBZ0O S0Z0Z0SK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

961 8 7 6 5 4 3 2 1

964

rZ0ZkZrZ ZbZ0lpZ0 pZ0o0Z0Z ZpZ0aPZp 0Z0ZpZ0O M0O0Z0O0 PO0Z0OBZ S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0s0j ZplbZ0op pZnapsnZ Z0ZpZ0Z0 0Z0O0Z0Z Z0M0ANOP PO0Z0OBZ Z0SQS0J0 a

962 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

966

rZbZ0ZkZ opZ0Z0Zp 0lnZpLpa Z0ZpZ0Z0 0Z0Z0Z0Z Z0ZBZNZ0 PO0Z0OPO Z0S0ZRJ0 a

c

rZbZkZ0s opZ0ZpZ0 0ZnZpOpo l0ZpZ0Z0 0Z0O0L0Z ZRZ0ZNZ0 PZBZ0OPO S0Z0Z0J0

963 8

b

965

0ZkZ0Zrs ZplbZpZ0 pZ0apL0Z Z0Z0Z0Z0 0Z0Z0Z0Z ZNO0ZBO0 PO0ZRZ0O S0Z0Z0J0 a

Sacrifice on g6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZka0Z o0ZnZpZ0 0Z0ZpZpZ l0ZpO0Z0 0m0O0OPZ Z0ZBZNZ0 PZ0ZNJ0Z S0A0Z0ZQ a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

967 8 7 6 5 4 3 2 1

970

rZbZrmkZ oplnZ0Zp 0Z0apopZ Z0ZpM0MQ 0Z0O0Z0Z Z0oBZ0Z0 PO0Z0OPO S0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0Z0Z0ZkZ S0Z0ZpZ0 0Z0Z0Z0o o0ZPS0oq bZ0L0Z0Z OrZ0Z0O0 0Z0Z0OKO Z0s0Z0Z0 a

968 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

972

rZ0Z0ZkZ ZbZpZ0op no0ZpZrZ ZNa0ZpZ0 0OPZ0Z0l O0Z0OPO0 0ZQABZ0O S0Z0ZRJ0 a

c

0Z0Z0skZ ZbZ0Z0Zp 0Z0aqZ0Z Z0opZ0o0 pZ0Z0Z0Z O0L0OpOP 0O0Z0J0Z Z0ARZBZ0

969 8

b

971

0Z0Z0skZ o0Z0Z0ap 0Z0Z0ZpZ oRZNZ0Z0 0ZPoRZqZ Z0Z0ZrO0 0Z0Z0O0Z ZQZ0Z0J0 a

Sacrifice on g6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ Z0oRZpZp plNZ0OpZ Zpm0Z0Z0 0Z0ZQZ0Z Z0Z0O0Z0 PO0Z0ZPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

973 8 7 6 5 4 3 2 1

976

rZ0lkZ0s opZ0Zpop 0mnZ0Z0Z Z0opO0M0 0aPZ0Z0Z Z0MQZ0Z0 PO0Z0ZPO S0A0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rm0ZrZkZ opZ0ZpZp 0Z0O0ZpZ Z0o0abA0 0ZBZ0Z0Z Z0M0Z0Z0 Pl0Z0ZPO S0ZQZRJ0 a

974 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

978

rZbZ0skZ lpZ0Zpop pLpZ0Z0Z Z0Z0o0Z0 0ZBZPZ0Z Z0ZRZ0Z0 POPZ0OPO Z0ZRZ0J0 a

c

rZ0ZrZkZ obl0apZp 0onZ0ZpA Z0ZBZ0Z0 0Z0Z0Z0Z O0O0ZNZ0 0Z0ZQOPO Z0ZRZRJ0

975 8

b

977

rZqZ0ZkZ Z0Z0Zpo0 pZ0Z0m0o Z0s0oQZ0 0o0ZPZPZ ZBZ0Z0ZP POPZ0Z0Z ZKZRZRZ0 a

Sacrifice on f7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZkZ obl0mpZp 0o0a0ApZ Z0Z0Z0Z0 0Z0Z0ZQO Z0O0ZNZ0 BZ0Z0OPZ Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

979 8 7 6 5 4 3 2 1

982

rZ0l0j0s Zbo0apZ0 pZ0Z0Zpo ZpZ0S0Z0 0Z0O0Z0Z ZBO0Z0ZQ PO0Z0OnO SNA0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZ0ZrZkZ Z0Z0Zpap pZ0Z0ZpZ Z0Z0O0Z0 0ABZQOnZ Z0Z0Z0Z0 0lPJ0ZPO Z0ZRZ0ZR a

980 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

984

rZrZ0ZkZ ZblnapZp pZ0o0ZpL ZpZ0o0O0 0Z0APZ0Z ZBMRZ0Z0 POPZ0O0O Z0J0Z0S0 a

c

0ZrZrZ0Z obl0apj0 0onZ0ZpZ Z0Z0Z0Ap 0Z0ZQZ0Z OBZ0ZNZ0 0O0Z0OPO S0Z0S0J0

981 8

b

983

0sbl0ZkZ o0Z0Zpa0 0Z0O0Zpo Z0o0Z0Z0 0ZBZ0Z0Z Z0Z0ZNZP PZ0L0OPZ Z0Z0S0J0 a

Sacrifice on f7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0lkZ0s obo0ZpZ0 0o0Z0opa Z0Z0Z0Zp 0ZBO0M0O Z0M0O0Z0 PO0Z0OPZ S0ZQJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

985 8 7 6 5 4 3 2 1

988

0ZrZ0ZkZ lbZ0Zpap pZ0Z0ZpZ Z0Z0Z0Z0 0ZBZ0Z0Z Z0MQmPZ0 PO0Z0ZPO Z0SRZ0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

rZbZkZ0s oplnZpap 0ZpZ0mpZ Z0Z0o0Z0 0ZBOPZ0Z Z0M0ANZ0 POPZQZPO ZRZ0J0ZR a

986 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

990

rZ0s0ZkZ Zbl0mpop 0o0Z0m0Z o0oBZNZ0 0Z0ZPZ0Z O0Z0LNZ0 0O0Z0OPO Z0SRZ0J0 a

c

0Zrs0akZ Z0Z0Zpop 0l0Z0Z0Z ZpZBZ0S0 0m0Z0Z0Z Z0ZQZ0O0 0A0ZPO0O Z0Z0ZRJ0

987 8

b

989

rZ0ZrZkZ ZblnZpop 0opZ0o0Z Z0Z0Z0Z0 0Z0O0Z0Z ZBZ0Z0M0 PO0Z0OPO S0ZQS0J0 a

Sacrifice on f7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZnZkZ ZbZqZpZp 0Z0O0ZpZ Z0Z0Z0A0 rZ0o0Z0Z Z0Z0Z0ZP BZ0L0OPZ S0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

991 8 7 6 5 4 3 2 1

994

rZ0ZrakZ obZnZpo0 0opZ0Z0o Z0Z0ZNl0 0ZBO0Z0M O0Z0Z0Z0 0OQZ0OPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

0ZbZrZ0Z s0ZnZpj0 pZ0A0Z0o lpZBZ0o0 nSpO0Z0Z Z0O0O0Z0 RZQZ0OPO ZNZ0Z0J0 a

992 8 7 6 5 4 3 2 1

b

c

d

e

f

g

8

7 6 5 4 3 2 1

7 6 5 4 3 2 1

h

b

d

e

f

g

h

a

b

c

d

e

f

g

h

996

0ZrlrZkZ opZbZpop 0Z0Z0Z0Z ZNaBZ0Z0 0m0Z0A0Z Z0Z0Z0O0 PO0ZPO0O Z0SQZRJ0 a

c

0Zrs0ZkZ Z0Zbapo0 0m0Z0Z0o ZqoBZ0Z0 0Z0Z0M0Z Z0Z0O0A0 0Z0Z0OPO ZQSRZ0J0

993 8

b

995

rZ0ZrZkZ ZblnapZp pZ0o0ZpZ m0Z0oNZQ PZ0ZPZ0Z A0OpZ0Z0 BZ0M0OPO S0Z0S0J0 a

Sacrifice on f7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ oRZbZpaN 0ZnZ0ZpZ Z0l0Z0A0 0ZBoPZ0Z Z0Z0ZPZ0 0Z0Z0ZPZ Z0ZQZKZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

997 8 7 6 5 4 3 2 1

1000

rZbZkZ0s onZpZpZ0 0o0Z0Z0o Z0o0M0Z0 0ZPZ0Z0o l0O0O0Z0 PZQZ0OPZ Z0ZRJBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1002

0ZrlrakZ obZnZpZp 0o0ZpmpZ Z0Z0M0Z0 0ZBO0M0Z ZPZ0L0Z0 PA0Z0OPO Z0ZRZRJ0 a

c

rl0s0j0Z ZbZ0mpoB po0opZ0o Z0m0O0M0 0ZPZ0Z0Z APZ0Z0Z0 PZ0L0OPO Z0S0S0J0 a

999 8

b

1001

rm0l0ZkZ opZ0Zpa0 0Z0o0Zpo Z0oPZ0M0 0Z0s0O0Z Z0Z0Z0ZQ PO0Z0ZPO S0A0ZRJ0 a

0Zrs0ZkZ Zbl0apop pZnZpm0Z ZpZ0M0Z0 0O0ZPZ0Z O0ZBZNZ0 0A0ZQOPO Z0S0ZRJ0 a

998 8

Sacrifice on f7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0j0s ZpZ0apo0 0mpZpm0o Z0Z0M0ZN pZPO0A0O O0Z0Z0ZR 0O0ZQOPZ ZKZ0S0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1003 8 7 6 5 4 3 2 1

1006

rZ0Zka0s ZbZnZpop plpZpZ0Z Z0ZnO0M0 Po0ONZ0Z ZPo0Z0Z0 0ZQZBOPO S0A0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1008

rZbs0ZkZ Zplnopa0 pZnZ0Zpo Z0o0O0M0 0Z0ZBO0Z M0O0A0Z0 PO0Z0LPO S0Z0ZRJ0 a

c

0sblrZkZ o0o0ZpZ0 0o0opo0o m0Z0M0Z0 0ZPO0ZPO Z0OQZ0Z0 PZ0ZPOBZ S0Z0J0ZR a

1005 8

b

1007

rZ0snj0Z ZpZ0opZ0 0m0l0ZpZ o0ZPMbZp PZ0a0Z0Z ZBM0Z0ZP 0O0AQOPZ S0Z0S0J0 a

rZbZkZrZ ZpZ0apZ0 pZ0opmnZ l0Z0Z0M0 0Z0ZPZ0A Z0M0Z0L0 POPZBZPO Z0JRZRZ0 a

1004 8

Sacrifice on f7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZnlrZkZ Zbo0ZpZ0 pZ0Z0apo ZpZpM0Z0 0Z0O0Z0Z Z0MQO0Z0 POBZ0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1009 8 7 6 5 4 3 2 1

1012

rZ0lrakZ Z0ZnZpo0 pZ0Z0Z0o ZpopONM0 0m0O0Z0Z ZPZ0Z0ZP 0O0Z0OPZ S0AQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1014

rZ0ZrZkZ Z0Z0ZpOp pZpZ0ZnZ Z0Zpl0O0 0Z0Z0Z0Z ZPZBZ0ZQ PZ0Z0Z0O Z0ZRZRZK a

c

rm0s0akZ ZbZnZpop pl0ZpZ0A ZpZ0O0Z0 0Z0M0ZQZ ZBM0Z0Z0 POPZ0ZPO Z0ZRZRJ0 a

1011 8

b

1013

rZ0s0ZkZ oqZ0apo0 0ZbZ0mno Z0opZQM0 0Z0Z0Z0O O0M0OBA0 0O0S0OPZ Z0ZRZ0J0 a

rZrZ0ZkZ Z0lnapZp pZ0ZpZpL ZpZbO0Z0 0Z0Z0Z0Z ZNZBZ0Z0 POPA0ZPO Z0Z0SRJ0 a

1010 8

Sacrifice on f7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

bZrlrZkZ Z0Z0ZpZp pZ0ZpZpA ZpZ0O0Z0 0a0M0ZRZ Z0ZQZ0Z0 PZBZ0ZPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1015 8 7 6 5 4 3 2 1

1018

0ZrZkZrZ oRZ0ZpZ0 0ZbZpZ0Z l0ZpOnZ0 0Z0Z0O0Z O0oBZQZ0 0ZPZ0ZPO Z0A0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1020

rZbZrZkZ Z0lnZpap pono0Z0Z Z0Z0Z0Z0 PZ0SPZ0Z Z0M0Z0L0 0OPZBZPO Z0Z0ZRAK a

c

rm0l0skZ ZbZ0apop pZ0ZpZ0Z Zpm0O0ZQ 0Z0M0Z0Z ZBM0A0Z0 POPZ0ZPO S0Z0ZRJ0 a

1017 8

b

1019

rZ0Zka0s o0S0Zpo0 0lpZpZ0Z Z0ZpOnAp 0ZnO0L0O Z0Z0ZNM0 PZPZ0OPZ S0Z0Z0J0 a

rZblrakZ ZpZnZpop pZno0Z0Z Z0Z0ZpOQ 0Z0MPZ0O Z0M0A0Z0 POPZ0Z0Z Z0JRZBZR a

1016 8

Sacrifice on f7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0skZ ZpZbZpop 0l0Z0a0Z o0ZpZ0Z0 0Z0MnZnZ O0ZQZNOP 0O0APOBZ Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1021 8 7 6 5 4 3 2 1

1024

0ZrZ0skZ Z0Z0Zpap 0Z0Z0mpZ ZqoPZ0M0 0Z0Z0A0Z Z0Z0Z0ZQ 0Z0Z0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1026

rZblrZkZ opZnZpop 0Z0Z0a0Z Z0Z0M0A0 0Z0o0Z0O Z0Z0Z0Z0 POPL0OPZ Z0J0SBZR a

c

0s0lkZ0s ZbanZpop po0Zpm0Z Z0o0Z0M0 PZ0ZNZ0Z ZQZPZ0O0 0O0ZPOBO S0A0J0ZR a

1023 8

b

1025

0s0ZrZkZ o0Z0l0op 0ZpZ0o0Z Z0OpZ0Zb PZ0AnZnZ Z0Z0Z0O0 0Z0MPOBO Z0SQS0J0 a

0ZrskZ0Z ZplbZpoB pZnmpZNZ Z0Z0o0O0 0Z0Z0Z0Z O0M0Z0Z0 0OPZ0LPO Z0Z0SRZK a

1022 8

Sacrifice on f7

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ Z0Z0ZpZ0 rZ0Z0apZ ZqZpZ0Zp 0o0OnZ0Z ZPZ0Z0ZP 0ARZNOPZ ZQZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1027 8 7 6 5 4 3 2 1

1030

rZ0Z0skZ opZ0Zpop 0Z0ZpZ0Z l0abO0A0 0Z0Z0L0O Z0M0Z0Z0 POPZ0ZPZ Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1032

rZ0ZqskZ Zpobapo0 0Z0ZpZ0o o0Z0O0ZQ 0Z0ZNZ0Z Z0O0Z0Z0 BO0Z0OPO Z0ZRJ0ZR a

c

rZ0ZrZkZ Z0O0lpop 0o0ZnZ0Z Z0Z0ZQZ0 0Z0Z0ZNZ aPA0Z0O0 0Z0Z0OKO Z0S0S0Z0 a

1029 8

b

1031

0ZrZrZ0j ZqZ0Zpop pZ0SpZ0Z Z0o0O0Z0 0Z0Z0ZQA o0Z0O0Z0 bO0Z0OPO Z0ZRZ0J0 a

rZblkZ0s opZnZpop 0Z0Z0Z0Z ZBZNOpZ0 0Z0A0Z0a ORZ0Z0Z0 0ZPL0ZPO Z0ZKZ0ZR a

1028 8

Sacrifice on f6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0skZ Z0Z0Zpop pa0ZqZ0Z Zpo0O0ZQ 0Z0sNZ0Z Z0ZRZ0Z0 PO0Z0OPO Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1033 8 7 6 5 4 3 2 1

1036

rZ0ZrmkZ ZnZblpo0 0o0ZpZ0o oPo0O0Z0 PZPZNZ0O Z0LBZ0A0 0Z0Z0OPZ S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1038

rZqZ0skZ opZ0Zpop 0a0Z0Z0Z Z0ZPZ0A0 0ZpmNZ0Z O0Z0Z0O0 0O0Z0OBO Z0ZQZRJ0 a

c

rZbZrmkZ Z0Z0a0op plpZpZ0m Zpo0O0Z0 0Z0ZNZ0Z ZPZ0ZNZP PAQZBOPZ Z0ZRS0J0 a

1035 8

b

1037

rl0ZrZkZ a0o0mpo0 pZ0ZbZ0o ZpZNo0Z0 0O0ZPZ0M ZBO0Z0ZP PZ0ZQOPZ Z0ZRZRJ0 a

rZqZrakZ Z0opZpop pZbZ0Z0Z ZpZNO0Z0 0Z0L0Z0Z Z0ZRZ0A0 POPZ0OPO Z0Z0ZRJ0 a

1034 8

Sacrifice on f6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srZkZ Z0Z0Zpo0 po0Z0Z0Z Z0Z0ZnOQ Pm0ZBZNZ Z0Z0Z0l0 0OPZ0Z0Z Z0Z0S0SK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1039 8 7 6 5 4 3 2 1

1042

0ZrZnskZ Z0l0apop 0ZbZpZ0Z Z0ZpO0Z0 0o0ANO0Z Z0Z0ZBZQ 0OPZ0ZPO Z0Z0SRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1044

rZ0l0skZ Znm0apo0 pZ0Z0Z0o ZpopO0A0 0Z0ZNZ0Z Z0O0ZNZP POQZ0OPZ Z0ZRS0J0 a

c

0ZrZbZkZ Z0Zqapop pA0ZpZ0Z OpZ0O0O0 0m0oNO0Z Z0ZPZRZ0 0OrZ0ZBO S0Z0L0ZK a

1041 8

b

1043

rZbl0skZ Z0Z0Zpop 0Z0o0Z0Z Z0ZNmPO0 po0Z0Z0Z ZNZRZ0ZQ POPZ0Z0O Z0J0Z0S0 a

rs0Z0akm ZqZ0Z0o0 pZpo0Z0Z Z0Z0o0O0 0ZbZNZ0O ZPM0AQZ0 PZ0Z0O0Z Z0JRZ0ZR a

1040 8

Sacrifice on f6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opZnZpo0 0m0ZpZ0o Z0o0O0Z0 0ZPONZ0Z Z0OQZ0Z0 PZ0Z0ZPO S0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1045 8 7 6 5 4 3 2 1

1048

rZ0Z0skZ oboqZpop 0o0ZpZ0Z Z0Z0Z0Z0 0a0ONZ0Z Z0ZBZ0Z0 POPZQOPO Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1050

rZbZ0skZ Z0Z0apop nlpZpZ0Z opo0O0Z0 0ZPZNZ0Z OPZPZNZ0 0A0Z0OPO S0ZQZRJ0 a

c

rZbZ0skZ o0Z0Zpop 0l0ZpZ0Z ZpZ0m0Z0 0Z0SNZQZ ZBZ0Z0Z0 POPZ0ZPO Z0J0Z0ZR a

1047 8

b

1049

rZrZ0mkZ Z0l0apop bZnZpZ0Z o0opO0Z0 0o0Z0ANO O0OPZNO0 0O0ZQOBZ S0Z0S0J0 a

rZ0Z0akZ obl0Zpo0 0onZpZ0o Z0Z0Z0Z0 0Z0ZNZ0Z ZPZ0O0O0 PA0ZQOBO Z0ZRZ0J0 a

1046 8

Sacrifice on f6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0lnZ0skZ s0Z0Zpop pobZnZ0Z Z0ZNoNZ0 0ZPZPZ0Z ZPZ0L0Z0 PZ0SBZPO Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1051 8 7 6 5 4 3 2 1

1054

rm0s0akZ ZqZ0Zpop 0ZbopZ0Z ZpZNZ0O0 0O0APO0Z Z0Z0ZQZP 0ZPZ0ZBZ Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1056

0Zrs0akZ Zbl0Zpop pZnZ0Z0Z Zpo0oPZ0 PZ0oPZNZ ZPZPZ0Z0 0ZPAQZPO S0Z0MRJ0 a

c

rZbZ0s0j Z0Z0Zpop 0l0ZpZ0Z Z0ZpOnOQ pZnO0ANZ O0o0Z0OB 0ZPZ0O0Z S0Z0S0J0 a

1053 8

b

1055

rlbm0skZ ZpZ0Zpop pZ0ZpZ0Z Z0Z0Z0Z0 0Z0ZNO0Z Z0Z0Z0Z0 POPZBLPO ZKZRZ0ZR a

rZ0l0skZ o0o0Zpop 0ZbZ0Z0Z ZpaNO0Z0 0ZpZ0Z0Z Z0Z0ZNZ0 POPL0OPO Z0ZRS0J0 a

1052 8

Sacrifice on f6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZRZ0a0Z oQZ0Z0Zp 0Zps0Z0j Z0Z0ZpZ0 NZ0Z0Z0m ZPZ0Z0ZP PZ0Z0OPZ l0Z0ZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1057 8 7 6 5 4 3 2 1

1060

rZ0Z0s0j o0o0Z0ap 0Zpo0ZpZ Z0Z0mbZ0 NZPZ0Z0l ZPZ0Z0ZP PANL0OPZ S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1062

rZbZ0skZ Z0Z0lpa0 pZ0o0Z0o Z0oPm0Z0 PoNZ0O0Z Z0ZBZ0Z0 0O0Z0ZPZ SNZQS0J0 a

c

rZ0Z0skZ opZ0lpop 0Zpa0mbZ Z0Z0m0Z0 0ZPZpZ0Z ZPM0O0ZP PAQSBOPZ Z0ZRZNJ0 a

1059 8

b

1061

0Zbl0s0j Zpo0Z0ap rZ0Z0Z0Z o0Z0opZ0 0ZPO0Zpm O0M0O0Z0 0AQZ0OPO Z0ZRSBJ0 a

0sbZ0skZ Z0Zqopap pZpo0ZpZ A0Z0m0Z0 0Z0ZPZ0Z ZBZ0M0ZP POPZ0OPZ S0Z0LRJ0 a

1058 8

Sacrifice on f6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0ZkZ Z0ZqZpop rZ0Z0Z0Z O0ZpZ0Z0 QZpm0Z0Z Z0Z0Z0Z0 RO0A0OPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1063 8 7 6 5 4 3 2 1

1066

0Z0ZrakZ Z0ZqZpo0 0Z0o0m0o ZpZPm0Z0 0OrZ0Z0Z ZQM0M0ZP 0Z0A0OPZ S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1068

rZ0ZrZkZ o0Z0ZpZ0 0Z0a0ZpZ S0oPl0Z0 0ZPZpZbo Z0M0O0Z0 0ZQZ0OPO S0Z0ZNJ0 a

c

rZbZ0s0Z opZ0l0j0 0Z0o0Zpo ZNo0o0a0 0ZPmPZ0Z Z0MQZ0Z0 PO0Z0OPO ZBZRZRJ0 a

1065 8

b

1067

0arZ0skZ ZbZ0l0o0 pZ0ZpZ0Z ZpZ0ZpZ0 0O0L0Z0Z O0M0O0ZP 0A0Z0OPZ Z0ZRZRJ0 a

rZ0Z0Z0Z opZ0Zpok 0mpZrZ0o Z0Z0O0Z0 0ZqZPO0A Z0O0Z0ZR 0Z0L0ZPO Z0Z0S0ZK a

1064 8

Sacrifice on f6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0s0Z0Z l0Z0mpjp 0o0obopZ Z0o0Z0Z0 0ZPZNZ0Z ORZPO0OP 0Z0Z0OBJ Z0ZQZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1069 8 7 6 5 4 3 2 1

1072

0s0ZrZ0j opZ0Mpap 0Z0lbZpZ Z0Z0Z0L0 0Z0Z0O0Z Z0A0ZPZ0 PO0Z0S0O Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1074

0Z0Z0jnL Zbl0Z0o0 papZ0o0Z ZpZ0oPZ0 0Z0ZPZNZ Z0Z0ZBZ0 POrZ0Z0O S0Z0ZRZK a

c

0Z0Z0s0s o0j0Z0Z0 QZpZpZ0Z Z0apl0o0 0Z0Z0ZnZ Z0Z0ZPZ0 POPA0ZKO S0Z0ZNZR a

1071 8

b

1073

rZbZ0ZkZ opZ0Zpop 0Zns0Z0Z Z0o0ZqZ0 QZPZnZ0Z O0Z0ONZ0 BA0Z0ZPO Z0ZRS0J0 a

rZ0Zqs0j opZ0Zpap 0Zpm0Z0Z Z0Z0Z0ZQ 0Z0oPZ0Z Z0MBZ0ZP POPZ0ZPZ S0Z0ZRJ0 a

1070 8

Sacrifice on f6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0skZ opZqZrZp 0Zno0ZpZ Z0ZNo0Z0 0OPm0ZbZ Z0ZBZPZ0 PA0Z0ZPO Z0SQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1075 8 7 6 5 4 3 2 1

1078

0Z0Z0Zrj opZ0ZRZp 0Z0Z0O0o Z0mpZ0Z0 0ZPLpl0Z Z0O0Z0sP PZBZ0ZPZ Z0Z0Z0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1080

0Z0Z0s0Z ZpZ0Z0ok 0a0Z0ZrZ oQZ0o0Zp 0Z0ZPZ0l Z0Z0ZPZP PZRZ0ZPJ ZRZ0ZNZ0 a

c

0Z0ZrZkZ Z0m0ZpZp pZ0L0ZpZ Z0Z0Z0Z0 NZ0o0Obl Z0ZpZ0Z0 0O0Z0ZPO S0A0ZRZK a

1077 8

b

1079

rZ0l0skZ ZpZbapop pZnZpZ0Z Z0o0O0ZQ 0Z0ZNZ0Z Z0Z0Z0O0 POPA0OBO Z0ZRS0J0 a

0Z0Z0skZ Z0ZrZpo0 0mqZpZ0o opZ0Z0Z0 0ZpONZ0Z O0O0S0Z0 0OQZ0OPO Z0Z0S0J0 a

1076 8

Sacrifice on f6

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ Zpl0Zpo0 pZ0oba0o O0Z0m0Z0 0Z0MPZ0Z Z0M0Z0Z0 0OPZBZPO S0ZQZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1081 8 7 6 5 4 3 2 1

1084

rZ0Z0skZ ZbZnZpa0 0Z0o0ZpZ ZpZPl0Ap 0ZpZPZ0Z Z0O0ZRMP 0OBL0ZPZ Z0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1086

rm0l0s0Z obZ0opZk 0o0o0ZpZ Z0ZPZ0Zp 0Z0L0Z0O ZPZ0ZNO0 PZ0ZPOBZ S0Z0ZRJ0 a

c

0Z0Z0s0j obZrapZ0 0ZpZpZpZ lpZ0O0Zp 0Z0Z0O0O Z0M0O0S0 POQZ0ZPZ ZBS0Z0J0 a

1083 8

b

1085

rZqZrZ0Z Zpobapj0 pZno0ZpZ Z0Z0o0o0 0Z0OPZPZ Z0O0ZNMP POBZ0O0J S0ZQZ0S0 a

rlrZ0ZkZ Z0ZnapZp pZbZpZpZ OpZpO0Z0 0m0A0OBZ ZNM0Z0Z0 0OPL0ZPO Z0Z0SRZK a

1082 8

Attack against the kingside

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rl0m0s0j obZRZpop 0o0ZpZ0Z Z0Z0O0Z0 0Z0Z0AQZ Z0O0Z0O0 PZ0Z0OBO Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1087 8 7 6 5 4 3 2 1

1090

0Z0Zrl0Z o0Z0m0ok 0opoQm0o Z0Z0o0Z0 0Z0OPZ0M Z0O0ARZ0 PZPZ0ZPO Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1092

rZ0l0skZ ZpZ0apo0 pZbZ0m0o Z0Z0Z0Z0 0Z0Z0A0Z Z0MBZ0Z0 PO0L0OPO Z0ZRZRJ0 a

c

0Z0srZkZ ZblnapZp popZpZpA Z0Z0Z0M0 0Z0O0Z0L Z0ZBZ0Z0 POPZ0OPO Z0ZRS0J0 a

1089 8

b

1091

rZ0Z0skZ Z0Z0apop pl0Z0Z0Z m0Z0oPZ0 Po0ZNZ0Z Z0ZRZ0ZP 0O0Z0OPZ Z0SQZBJ0 a

rm0l0s0Z obZ0Z0ak 0o0ZpZ0o Z0opO0oP 0Z0OnApZ Z0OBLNZ0 PO0M0O0Z Z0JRZ0ZR a

1088 8

Attack against the kingside

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0akZ ZbZnZpZ0 0l0Z0mpZ Z0ZpZ0Zp 0Z0M0Z0O ZPZBZ0M0 0A0L0OPZ Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1093 8 7 6 5 4 3 2 1

1096

0ZrlrakZ ZbZ0Zpo0 0Z0Z0Z0o mpZ0o0Z0 0ZpZNZ0Z Z0OPZRZP BO0M0OPZ S0ZQZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1098

0Z0ZrZkZ opZ0A0op 0Z0Zno0Z ZqZ0Z0Z0 bO0ZpZ0Z O0Z0M0O0 0L0ZPO0O Z0S0Z0J0 a

c

rZ0Z0skm Z0Znlpa0 bo0ZpZ0o o0Z0O0o0 PZ0ONZ0Z Z0M0A0Z0 0OBZ0SPO S0ZQZ0J0 a

1095 8

b

1097

rmqZrZ0j opZ0apZ0 0Z0ZbZBA Z0ZpO0oP 0Z0M0Z0Z Z0O0Z0Z0 PZQZ0OPZ S0Z0J0ZR a

rZqZ0skZ Z0Z0m0a0 pZ0o0m0Z Z0oPo0o0 QZPZPoPZ ZRZNZPZ0 PZ0ZBA0Z Z0Z0ZRJ0 a

1094 8

Attack against the kingside

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Zqskm ZbZpa0Z0 0ZnZpZ0o Z0Z0ZpMP roPo0APZ ZPZ0ZNZ0 0ZBL0O0Z Z0S0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1099 8 7 6 5 4 3 2 1

1102

0Z0l0skZ o0ZnZ0o0 bo0Zpo0Z m0Z0O0ZQ 0ZrZNZ0Z O0Z0Z0Z0 0A0Z0OPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1104

0ZrZqskZ o0Z0apZ0 bo0Z0mpZ Z0Z0M0Zp 0ZPMpZ0Z ZPZ0Z0OQ PA0Z0O0O Z0ZRZRJ0 a

c

rZ0lrakZ o0ZbZ0o0 0onZpm0o Z0ZpZ0M0 0ZpO0O0Z Z0O0Z0M0 POQZ0ZPO SBA0ZRJ0 a

1101 8

b

1103

0ZbZ0Z0Z Z0lrspZk 0Z0Z0SpZ Z0o0Z0Zp 0oBZPS0O ZPZPZ0O0 0L0Z0Z0J Z0Z0Z0Z0 a

rZ0m0skZ opoqopa0 0m0Z0Zpo Z0ZpO0M0 0Z0O0ZPZ Z0O0Z0ZQ POBZ0O0O ZRA0ZRJ0 a

1100 8

Attack against the kingside

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0ZkZ obZpZ0op 0OnZps0Z Z0Z0Zpm0 0ZPZ0Z0Z A0OBOPOq PZQM0Z0O ZRZ0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1105 8 7 6 5 4 3 2 1

1108

0Z0ZrZkZ obZnZ0op 0Z0o0ZrZ ZPo0opl0 0ZPZnZ0Z OQZ0OPZ0 0A0ZBZPO Z0ZRMRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1110

rZbZrZkZ Zpl0apop pm0Z0Z0Z Z0oBmPAQ 0Z0ZPS0M Z0M0Z0ZP PO0Z0ZPZ S0Z0Z0J0 a

c

rZ0lrZkZ opZ0Zpap 0ZpZnZpZ ZPOpZ0Zn PZ0A0Z0Z ZNZ0OPZ0 0Z0ZBO0O Z0SQZRJ0 a

1107 8

b

1109

rZ0Z0skZ opZbZpa0 0Z0ZpZnZ Z0o0Z0OQ 0Z0oBO0Z Z0ZPZ0Z0 POPZ0Z0Z Z0Z0ZRJ0 a

rZqs0ZkZ o0Z0apZp 0Z0ZpmpZ Z0o0M0A0 0o0m0Z0Z Z0MPZ0ZR POPL0OPO Z0Z0S0J0 a

1106 8

Attack against the kingside

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0s0j ZpZ0Z0Zp 0Z0obZna Z0Z0o0Z0 rMPZ0Z0Z ONZ0ZPOq 0A0ZQZ0O Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1111 8 7 6 5 4 3 2 1

1114

0Z0ZrZkZ ZpZ0lpa0 0ZpormpZ oPm0Z0Z0 0ZPZPZPZ O0Z0APZ0 0Z0ZNZBZ Z0SQS0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1116

rm0lrZkZ Zpo0Z0an pZ0o0opZ Z0Z0Z0Op 0ZPMPO0Z Z0M0ABZb PO0Z0S0O S0ZQZ0J0 a

c

rZ0a0Z0Z obZ0l0j0 no0o0ZrZ ZNZPo0ZQ PONZPo0Z Z0Z0Z0Z0 0ZRZ0APo Z0S0Z0ZK a

1113 8

b

1115

0Z0l0s0Z ZpZ0Z0j0 0O0o0ZpZ o0ZPora0 0ZNZ0Z0Z ZPZQZPO0 0Z0Z0Z0Z ZRZ0ZRZK a

rZbl0skZ oponZpa0 0Z0o0Z0Z Z0ZPo0Z0 0ZPZPZpZ Z0M0ZNA0 POQJBOnZ S0Z0Z0ZR a

1112 8

Attack against the kingside

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ oblnZpo0 0o0Z0Z0o Z0apO0Z0 0ZPZ0Z0Z Z0ZBZNZ0 PA0ZQZPO S0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1117 8 7 6 5 4 3 2 1

1120

rZ0Z0skZ Z0l0ZpZp pZ0Zbo0Z Z0a0o0Z0 Po0Z0Z0Z ZPZQONZ0 0A0Z0OPO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1122

rZ0ZrZkZ ZpZqZpap pZ0o0ZpZ Z0oPZbAn PZPZNOPZ Z0ZBZ0ZP 0O0L0Z0Z S0Z0S0J0 a

c

rZ0ZnskZ opZ0Z0ap 0Z0oPl0Z Z0o0ZpZQ PmPZpZ0Z S0Z0Z0MP 0O0Z0OPZ ZBA0ZRJ0 a

1119 8

b

1121

rZ0Z0j0Z o0o0spa0 0Z0o0Z0Z Z0ZPZQO0 qZpZBZ0Z Z0Z0ZRZ0 PO0Z0OPZ ZKZ0Z0ZR a

rZbZrZkZ opZ0lpa0 0Z0o0m0o Z0oPZ0o0 PmPZ0Z0Z Z0M0ANZP 0O0L0OPZ SBZ0ZKZR a

1118 8

Attack against the kingside

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmqZ0skZ o0ZbapZ0 0ZpZ0ZpZ Z0O0O0Zp 0Z0oPO0Z O0M0Z0M0 0Z0A0ZPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1123 8 7 6 5 4 3 2 1

1126

0Zbl0s0Z Z0Znspak po0o0ZpZ Z0oPm0Op PZ0ZPA0O Z0M0M0Z0 0OPLBS0Z Z0Z0Z0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1128

0ZrZ0skZ ZnlnapZ0 po0o0ZpZ Z0ZQZ0Op PZ0ZPS0O APZ0Z0MB 0ZPZ0Z0Z Z0ZRZ0J0 a

c

0Z0Z0skZ ZbZ0Zpo0 pZ0Z0Z0o Z0m0o0OQ 0orZPZ0S Z0Z0Z0M0 POqZ0ZBO Z0Z0ZRZK a

1125 8

b

1127

0Z0srj0Z ZqobZpoQ nZ0Z0Z0o ZpZnO0a0 pZ0Z0Z0Z Z0Z0Z0MP PO0A0OPZ SBZ0S0J0 a

0Z0ZrZkZ ZbZrlpZn pZ0opZpZ Z0o0Z0Op 0ZPZPO0L ZPZ0Z0MR PZ0Z0ZBO Z0ZRZ0J0 a

1124 8

Attack against the kingside

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0s0j oplbZpZp 0Z0apo0Z Z0Z0Z0Z0 0ZBM0ZQZ Z0O0Z0Z0 PO0Z0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1129 8 7 6 5 4 3 2 1

1132

0Z0Z0skZ Z0l0apZp 0ZbZpZpZ Z0ZpO0Z0 0OpA0O0Z Z0O0L0Z0 0ZBZ0ZPO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1134

0ZqZ0Z0Z opZ0Z0ak 0Z0Z0Zpo MPZ0ZpZn PZ0spZ0Z Z0ZPM0Ob 0Z0ZPO0O Z0ZQS0JB a

c

0Z0ZrZkZ opZ0Zrop 0ZpZ0m0Z Z0l0Z0Z0 0ZPMpZbZ O0L0S0OP 0O0Z0OBZ S0Z0Z0J0 a

1131 8

b

1133

0Z0s0skZ o0ZbZ0ap nmpo0opZ Z0Z0o0Z0 0Z0ZPZ0L ZPZ0MPZN PZ0ZKZ0O Z0S0Z0S0 a

qZ0Z0skZ Z0mRZpo0 nZ0Z0Z0o Z0o0OQZ0 pZPZ0O0M OrZ0ONZ0 0Z0Z0J0O A0Z0Z0Z0 a

1130 8

Attack against the kingside

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ o0Z0Z0Z0 qm0Z0ZpZ Z0oPZpZp 0Z0a0O0Z Z0Z0M0Z0 POQA0ZPO S0Z0S0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1135 8 7 6 5 4 3 2 1

1138

0sbZ0skZ o0Z0opap nZPZ0ZpZ Z0ZpZ0Z0 0ZPZ0Z0Z ZqM0OPZ0 RA0Z0JPO Z0L0ZBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1140

0Z0ZnZ0j Zbo0Z0a0 pZqZ0Z0o ZpZ0m0Z0 0Z0Z0M0Z Z0O0Z0M0 PO0s0OPZ S0L0S0J0 a

c

rZqZ0a0s Z0onokop pZQZbo0Z Z0O0o0Z0 0O0Z0Z0Z Z0O0ANZ0 PZ0Z0OPO S0Z0JBZR a

1137 8

b

1139

rZ0lrZkZ obZna0op 0o0Zpm0Z Z0o0MpZ0 0ZPO0A0Z Z0ZBZNZ0 PO0ZQOPO S0Z0ZRJ0 a

rZ0Z0s0Z obm0Zpj0 0o0lpZpo Z0ZPZ0L0 BZpZPZ0Z Z0O0Z0M0 PZ0Z0OPO Z0ZRZRJ0 a

1136 8

Hunting the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZqZ0Z0s Z0o0Z0Zp kono0ZpZ o0ZbZ0Z0 PZ0Z0Z0L ZPS0ZNO0 0ZPZ0ZBO Z0J0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1141 8 7 6 5 4 3 2 1

1144

0Z0ZrZ0Z Z0Zko0Zq nabZpsRo opZpZ0ZP 0Z0O0Z0Z O0ZQZ0Z0 0O0ZNOPZ ZKSBZNZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1146

rZ0lbZns opZnZkZp 0Z0ZpZpZ ZPZpOpO0 0A0M0O0O Z0S0Z0Z0 0ZPL0Z0Z S0Z0JBZ0 a

c

0Z0Zrs0Z obZnZpZk 0o0ZPZpo Z0oPZ0Z0 0ZPZ0Znl Z0ZBZ0M0 PA0L0ZPO Z0Z0SRJ0 a

1143 8

b

1145

rZ0ZrZkZ ZpZ0Z0ap 0Z0Z0ZpZ Z0Z0Z0Z0 0o0lpZbZ O0Z0Z0O0 0OQZPOBO S0ZNJ0ZR a

rm0lrZkZ obZ0apo0 0o0ZpZno Z0o0O0MQ 0Z0oNO0O OPZBZ0O0 0APO0Z0Z Z0Z0J0ZR a

1142 8

Hunting the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Zrj opZ0ZpZp 0ZbZ0m0L Z0Z0lPZ0 0ZNo0S0O Z0Z0Z0Z0 POPS0Z0J Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1147 8 7 6 5 4 3 2 1

1150

0Zks0Z0s o0m0Z0Z0 0OpZpZ0o Z0Z0O0ZP 0ZPO0o0Z ZQZ0Z0o0 0A0Z0OPl S0ZRZKZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1152

0ZrZrZkZ o0m0Z0o0 0ZqZpopZ Z0a0Z0A0 0oPZ0Z0S ZBZ0Z0ZQ PO0Z0OPO Z0ZRZKZ0 a

c

0ZrZrZkZ opZnapo0 0Z0Zpm0o l0Z0MNZP PZpO0A0Z Z0O0Z0Z0 0OQZ0OPZ S0Z0S0J0 a

1149 8

b

1151

0sbZ0Z0s Z0lnako0 po0opm0Z Z0Z0Z0Z0 PZ0MPZ0Z Z0M0ABZ0 0OPZ0Z0O S0ZQZRJ0 a

rZ0ZrZkZ ZqZnapo0 pZbopZ0Z Z0Z0Z0O0 0o0APZ0Z Z0ZBZ0MP POPL0Z0Z ZKZRS0Z0 a

1148 8

Hunting the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ oRZ0Z0o0 0Z0abZ0o Z0ZpZpM0 0Z0m0Z0Z O0Z0Z0ZQ 0ZPZBOPO Z0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1153 8 7 6 5 4 3 2 1

1156

0ZrlrZkZ o0Z0Zpap 0o0ZpZpZ Z0ZnZ0Z0 0ONO0Z0m OQZ0Z0Z0 0A0ZBOPO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1158

rZbs0ZkZ opZ0ZpZp 0Z0Z0ZpL Z0o0Z0Z0 0Z0OqZnZ ZBO0Z0Z0 PZ0ZNOPO Z0S0ZRJ0 a

c

rZ0lrZkZ opobZpop 0anZ0Z0Z Z0Z0Z0Z0 0ZBo0Z0Z Z0M0ONZ0 PO0ZQZPO Z0JRZRZ0 a

1155 8

b

1157

rZrZ0ZkZ opZbopZp 0Z0o0ZpZ l0Z0Z0Z0 0Z0LPmPZ ZBM0ZPZ0 POPZ0Z0Z S0Z0J0ZR a

0Z0ZrskZ o0O0Zpap 0oQZ0Z0Z Z0Z0Z0l0 0Z0ZpMbZ ZBZ0O0Z0 PZ0Z0OPZ Z0S0ZRJ0 a

1154 8

Hunting the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lrZkZ Zpo0Zpap 0ZnZ0ZpZ Z0Z0obM0 PZ0O0Z0Z A0Z0O0O0 PZ0Z0OBO Z0SQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1159 8 7 6 5 4 3 2 1

1162

rZ0ZrZkZ Z0Z0ZpZp 0m0ZpZpL o0lnM0Z0 Po0Z0Z0Z ZBZ0Z0ZP 0OPZ0OPZ Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1164

rZ0lrZkZ obZ0Zpo0 0o0Z0Zno Z0oPZ0Z0 0Z0ZNZ0O Z0Z0O0O0 POQZ0ZBZ Z0ZRZRJ0 a

c

rm0Zka0s opZ0o0op 0Z0Z0Z0Z Z0oNo0M0 0Z0ZPm0Z Z0Z0ZKZ0 PO0O0OPO S0A0Z0ZR a

1161 8

b

1163

qZ0s0Zka Z0Z0ZpZp no0M0mpA Z0ZPo0Z0 0O0ZPZ0Z ZQZ0ZNOP 0Z0Z0O0Z Z0Z0SKZ0 a

rZbZrZkZ o0ZRZpZp 0ZpZpo0Z Zpl0Z0Z0 PZpZ0Z0L Z0Z0OPZ0 0O0ZBJPO Z0Z0Z0ZR a

1160 8

Hunting the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0Z0s opZ0jpop 0Z0ZpZ0Z Z0Z0Z0Z0 Qa0lPZ0Z Z0M0Z0Z0 0O0Z0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1165 8 7 6 5 4 3 2 1

1168

rZbZ0skZ opo0Z0op 0Z0a0Z0Z Z0ZPmpZ0 0ZPZ0Z0Z OQZ0O0lP 0Z0ZBZPZ S0A0ZRJN a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1170

0Z0Z0Zrs oplbZpjp 0Zpa0onZ Z0ZpZ0ZQ 0Z0O0O0M Z0ZBZRM0 PZPZ0ZPO Z0Z0ZRJ0 a

c

rm0Z0skZ obopl0op 0o0Zpa0Z Z0Z0M0ZQ 0Z0ONZ0Z Z0ZBZ0Z0 POPZ0OPO S0Z0J0ZR a

1167 8

b

1169

rZ0Z0skZ opSnZpZ0 0Z0Z0Zpa Z0O0oqZp 0Z0M0Z0Z O0LPm0Ob 0A0MPO0O Z0Z0S0JB a

0Z0s0Zrj Zpo0ZpZp pZ0oqonL Z0Z0ZNZ0 0Z0ZPZ0Z Z0Z0S0Z0 POPZ0ZPO Z0Z0ZRJ0 a

1166 8

Hunting the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZ0j oRZ0ZQop 0Z0Z0a0Z Z0opl0Z0 0Z0Z0Z0Z A0O0ZBZ0 PZPO0ZPO Z0J0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1171 8 7 6 5 4 3 2 1

1174

rZ0snZkZ ZblnZpop pZ0Z0Z0Z Z0apO0O0 0o0M0L0Z ZPZ0ZBZ0 PAPZNS0O Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1176

rZblkZ0s opopZNop 0Z0Z0Z0Z Z0anO0Z0 0Z0Z0Z0Z Z0Z0Z0J0 PA0Z0ZPO SNZQZ0ZR a

c

rZ0lkZ0s opo0Z0Zp 0a0o0o0m m0Z0O0M0 0ZBO0ZbA Z0M0Z0Z0 PZ0Z0OPO S0ZQZRJ0 a

1173 8

b

1175

rZ0ZkZ0s l0ZbZpZp pZpZpo0Z Z0a0Z0Z0 0ZQZ0A0Z Z0O0ZBZ0 PZPZ0OPO ZRZRZ0J0 a

rZ0Z0ZkZ opo0ZrZp 0Z0o0Z0a Z0ZPm0Z0 0m0ZPOpZ ZPZ0J0O0 PABZNZ0l S0ZQZ0ZR a

1172 8

Hunting the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0Znj ZpZqa0Zp 0Z0o0s0Z o0oPo0Z0 0ZPZPo0Z Z0Z0ZPZP PO0LNARJ Z0Z0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1177 8 7 6 5 4 3 2 1

1180

0ZRZ0Z0Z o0L0Z0Zp 0Z0Z0o0j Z0Z0ZPZ0 PZ0O0ZPZ Z0Z0Z0ZK 0Z0ZqZ0O Z0Z0ZrZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1182

rZ0l0ZrZ opZ0m0jp 0ZpZpo0Z Z0Z0o0ZQ 0Z0ZPZ0M Z0OPZ0Z0 PZPZ0ZPO S0Z0ZRJ0 a

c

0Z0m0skZ arZqZ0o0 0ZpZbZ0o Z0ZpZ0Z0 0ZPO0o0O O0ANZ0On 0Z0M0OBJ S0ZQZRZ0 a

1179 8

b

1181

rZ0Z0skZ oQZ0Z0op 0ZpZ0Z0l Z0ZpO0Z0 0Z0O0Z0Z Z0O0m0Z0 PZ0Z0APO S0S0Z0J0 a

rZ0l0skZ Z0Z0ZpZp 0ZpapZpZ ZbM0Z0On 0onOPZ0Z Z0Z0ANZ0 POBZ0O0O ZKZRL0ZR a

1178 8

Hunting the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZrZ Z0abZkZ0 0ZpZ0Z0Z Z0lpZpZ0 0Z0ZpO0Z ZQO0M0AP 0O0Z0Z0J Z0Z0S0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1183 8 7 6 5 4 3 2 1

1186

rZbarZkZ opZnApZp 0Z0OpZpZ l0o0M0Z0 0Z0Z0Z0Z Z0OBZ0Z0 PZPZQOPO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1188

rZblrZkZ ZpZnapop pZnZ0Z0Z Z0ZpO0ZQ 0Z0M0O0Z ZBZ0A0Z0 POPZ0ZPO S0Z0ZRJ0 a

c

rZbl0skZ ZpZpZpop 0Z0Zpm0Z o0Z0Z0Z0 0OPZnZ0Z O0Z0Z0Z0 0ZQMPOPO S0A0JBZR a

1185 8

b

1187

rZbZ0skZ opZ0a0op 0l0ZpZ0Z Z0Zpm0Z0 0Z0Z0Z0Z O0Z0ZNM0 0O0ZBZPO S0AQJ0ZR a

rZ0Z0skZ Z0ZqZpop 0Zbonm0Z o0o0oNZ0 Po0ZPZ0Z Z0OPZQZ0 BO0A0OPO S0Z0S0J0 a

1184 8

Hunting the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zqa0s ZbZnj0Zp pZ0Zpo0Z Z0Z0Z0AQ No0o0Z0Z Z0ZBZ0Z0 PO0Z0OPO S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1189 8 7 6 5 4 3 2 1

1192

0Z0Z0ZkZ ZpLnZ0Zp 0ZpZ0ZrZ Z0ZpZ0Z0 0Z0Z0M0l Z0Z0ZPZP PO0ZrZPZ ZRZ0ZNJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1194

0Z0Z0s0Z ZpZbl0j0 pZpa0ZpZ Z0ZPo0Zp PZBZPZ0Z Z0Z0ZNZ0 0O0Z0sPO S0L0Z0SK a

c

0ZrZ0ZkZ opl0opZp 0Z0obZpL Z0Z0Z0On 0ZrMPZ0Z Z0M0ZPZ0 POPZ0Z0Z Z0JRZ0ZR a

1191 8

b

1193

rZ0ZkZrZ opZ0ZpZp 0Z0ZpZ0Z Z0Z0m0Z0 bZqMPZ0Z Z0Z0A0ZP PZ0Z0OPZ S0L0Z0JR a

rZ0ZkZns o0Z0Z0a0 0ZqopZ0o ZQZ0m0o0 0Z0M0o0Z Z0O0Z0Z0 PO0Z0ZPO SNA0ZRJ0 a

1190 8

Annihilation of the defensive piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sbZrakZ ZplnZpZ0 pZ0Z0Zpo Z0o0Z0Z0 0ZPZNo0Z ZPZ0O0O0 PA0L0ZBO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1195 8 7 6 5 4 3 2 1

1198

rZ0Z0skZ Z0ZblpZp pZ0opZpL Z0Z0Z0On 0o0MPZ0Z ZPM0ZPZ0 0OPZ0Z0Z Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1200

rj0m0m0s opZ0S0Zp 0ZpZ0SpZ Z0M0Z0Z0 0OPZ0ZBZ Z0Z0Z0Z0 PZ0Z0ZPO Z0Z0Z0J0 a

c

rZ0Z0ZkZ Z0lbZpa0 0Z0o0ZpZ Z0Z0o0Z0 0O0ZPZ0Z ZPZ0APZ0 0J0S0L0Z s0M0Z0ZR a

1197 8

b

1199

rZ0Zrm0Z opZ0oka0 0lpono0Z Z0Z0ZNZb 0Z0O0Z0Z Z0ZBZNL0 POPZ0ZPO S0A0S0ZK a

0Z0Z0Z0Z orZrZ0Zp 0Z0Z0ZpZ Z0o0okZ0 0Z0a0ZNZ Z0Z0Z0O0 PO0S0OKO Z0Z0S0Z0 a

1196 8

Annihilation of the defensive piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZrZ Z0Z0akZp 0Z0ZpZ0S orZpA0Z0 nZpOPM0Z Z0O0ZPZ0 KO0S0Z0Z Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1201 8 7 6 5 4 3 2 1

1204

0Z0sbZkZ ZrZ0lpa0 0Z0ZpZ0Z Z0O0M0Zp pZBO0L0Z O0Z0Z0Z0 0Z0Z0O0Z Z0ZRZ0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1206

qZrs0ZkZ o0Z0Zpop 0o0Z0ZnZ Z0oNZNZQ 0Z0a0O0Z ZPZ0Z0O0 PZ0Z0Z0O Z0ZRZRJ0 a

c

0Z0Z0ZkZ Z0ZbZ0op 0Z0Z0l0s Z0ZPZ0Z0 0ZPZBZ0O ZPZ0ZNo0 PZ0L0a0Z Z0ZRZ0ZK a

1203 8

b

1205

0sbZ0m0j Z0Z0ZrZp 0Zpo0OpL Z0Z0O0Z0 pZ0ZPZ0Z lBO0ZPZ0 PZPZNZ0Z ZKZRZ0ZR a

0s0ZrZkZ Z0Z0Zpop 0Z0o0Z0Z l0o0ZNZ0 bZBonZ0Z O0O0Z0Z0 0Z0Z0OPO Z0L0SRJ0 a

1202 8

Annihilation of the defensive piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0s0j ZnZbZqap 0oponZ0Z Z0Z0ZpZ0 0OPZ0O0Z Z0A0M0O0 0L0Z0MBO S0Z0S0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1207 8 7 6 5 4 3 2 1

1210

rZ0skm0Z opZ0a0L0 0ZpZpZ0o Z0ZqZ0Z0 0Z0ONZ0O Z0O0Z0S0 PZ0Z0OPZ Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1212

rZbl0j0s opZ0Zpop 0m0a0m0Z ZBoPo0Z0 0Z0ZPZ0M Z0M0Z0L0 PZPA0ZPO S0Z0ZRJ0 a

c

rZ0Z0skZ a0l0Zpop pZ0Z0Z0Z ZpZpZNZ0 0Z0OnO0A O0Z0Z0ZQ 0O0Z0ZPO Z0Z0SRJ0 a

1209 8

b

1211

0Z0s0j0Z ZbZ0apZB pl0ZpZ0o ZpZ0O0o0 0Zrm0Z0O O0M0A0L0 0O0Z0OPZ Z0ZRZRJ0 a

0Z0sqa0Z ZpS0Z0ok pZ0ZnZpo Z0ZpZ0Z0 0Z0A0Z0Z OPZ0Z0Z0 0O0Z0ZPO Z0Z0SQJ0 a

1208 8

Annihilation of the defensive piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sbZrZkZ Z0ZnZpop pZpZpZ0Z l0Z0O0Z0 0Z0Z0Z0O Z0M0L0S0 POPZ0ZPZ Z0JRZBZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1213 8 7 6 5 4 3 2 1

1216

0Z0Z0snj Zpmbl0ap rZ0o0Z0Z o0oPZPZ0 PZPZNZ0Z ZPZBANZP 0Z0L0O0Z Z0JRZ0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1218

rZbl0Z0s opZnj0Zp nZpMpo0Z Z0ZpO0o0 0Z0O0M0L Z0ZBZ0Z0 POPZ0OPO S0Z0J0ZR a

c

0Z0s0ZkZ ZqZPZpop rZ0S0ZnZ o0Z0ZQZ0 0opA0ZRZ Z0Z0Z0O0 PO0Z0OPZ Z0Z0Z0J0 a

1215 8

b

1217

rZ0s0ZkZ ZplbZpop pZ0Zpm0Z Z0O0M0Z0 PZPZ0Z0Z S0Z0Z0Z0 0APZ0OPO Z0ZQS0J0 a

0Z0Z0Z0Z Z0l0Zrak 0Z0ZbZpZ Z0snZ0Zp 0ZNoBZ0O L0ZPZ0O0 0Z0ZPZKZ S0Z0M0ZR a

1214 8

Annihilation of the defensive piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ Z0Z0Zpap 0Z0o0ZpZ ZpoPZPZP 0Z0lPZQZ ZPZrZ0M0 0Z0Z0ZPZ ZRZ0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1219 8 7 6 5 4 3 2 1

1222

0Z0Z0ZkZ o0Z0Z0op 0Z0Z0Zqs Z0ZpZ0Zr 0O0Z0Z0Z Z0OQZpA0 PZ0Z0O0O Z0ZRZ0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1224

0Z0Z0Z0s o0Z0ZRZ0 0o0Z0Znj Z0ZqO0Z0 PZps0Z0Z Z0Z0Z0OB 0ZQZ0Z0J Z0Z0ZRZ0 a

c

0Z0s0ZkZ ZpZrlpZ0 0ZpZpZ0o o0Z0OpZb PZPZ0O0M ZPZ0aBO0 0ZQZ0Z0O ZRZRZ0ZK a

1221 8

b

1223

0Z0l0s0j Z0Z0Z0op pZ0o0ZbZ ZpsNZ0ZQ 0Z0m0O0Z ZBZ0S0Z0 PO0Z0ZPZ Z0Z0S0J0 a

qs0s0ZkZ ZpZ0opZp 0ZnZnZpZ ZNOpZ0Z0 pO0O0ZPZ O0ZRZ0Z0 0Z0Z0O0O Z0ZQSBJ0 a

1220 8

Annihilation of the defensive piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZ0Z Z0lnZ0j0 po0Z0ops Z0ZpZPZ0 PZ0ZBZRZ Z0Z0Z0Z0 0OPL0ZPO S0Z0Z0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1225 8 7 6 5 4 3 2 1

1228

0s0Z0Zrj Z0S0Z0Zp 0ZNZpl0Z ZPmpZpZ0 0Z0ZnO0Z Z0Z0O0Z0 0Z0Z0ZBO L0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1230

rZ0ZrakZ ZpZbZ0Zn 0Zpo0opZ l0mPo0Z0 pZPZPZPZ O0M0A0Z0 0O0MBOKZ ZRZ0Z0LR a

c

0ZrZ0ZkZ Z0Z0ZpZ0 pZ0Z0ZpZ Z0ZQZ0O0 0oNZ0a0O ZPZ0Z0Z0 PZqZ0Z0Z J0ZRZ0Z0 a

1227 8

b

1229

0Z0Z0skZ o0Sba0op 0o0ZpZ0l ZPZpZ0Z0 PZ0O0ZnZ Z0Z0M0OP 0A0LPZBZ Z0Z0Z0J0 a

0Zks0a0Z ZbZ0Zqo0 pZ0opZ0s ZpZ0m0Zp 0Z0MPZ0O O0M0L0ZB 0OPZ0O0Z ZKZRZ0ZR a

1226 8

Annihilation of the defensive piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s ZbZnapo0 pZ0Z0Z0o l0M0Z0Z0 0Z0Z0MPZ Z0oBZPZ0 PZPL0Z0O ZKZRS0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1231 8 7 6 5 4 3 2 1

1234

0ZrZ0skZ obl0Zpo0 0o0Zpm0o Z0Z0M0Z0 0Z0O0Z0Z Z0ZBO0Z0 PO0Z0ZPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1236

0Z0ZrZkZ ZbZpZ0o0 pZ0Z0ZrZ Z0o0Z0Zp 0o0Z0Z0Z Z0Z0M0Zq POPZ0OPL S0Z0ZRJ0 a

c

rZ0s0ZkZ o0Znlpo0 0ZbZpZ0o Z0Z0A0O0 0ZpZ0Z0L Z0ZBZ0Z0 POPZ0O0O Z0JRZ0S0 a

1233 8

b

1235

0Z0s0Zrj ZbZqoQZp pZ0oRapA ZpZnZ0Z0 0Z0oBZ0Z O0Z0ZNZP 0OPZ0OPZ Z0ZRZ0J0 a

0ZkZqZ0Z Sbo0Z0Zp 0o0o0o0Z Z0mPmNs0 0ZPZ0Z0Z Z0O0O0A0 QZ0Z0Z0O S0Z0Z0J0 a

1232 8

Annihilation of the defensive piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZkZ o0Z0Zpop 0onZbZrs Z0Z0Z0Z0 PApOpZ0l Z0O0O0MP 0Z0Z0OPZ SRZ0ZQJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1237 8 7 6 5 4 3 2 1

1240

0Z0Z0ZrZ opZ0ZpZk 0Z0ZqAbs Z0ZpZ0Z0 0ZpO0ZPZ Z0O0ZRZ0 PZPL0ZRZ Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1242

0Z0Z0ZRZ Z0Z0apZn 0Z0Z0Zpj Z0Z0A0Z0 0Z0Z0O0o ZpZqZ0ZP 0Z0Z0LPJ Z0Z0Z0Z0 a

c

rZ0l0skZ opo0Z0ap 0m0Z0ZpZ Z0ZPo0M0 0ZPZ0ZbZ Z0M0L0Z0 PO0Z0O0Z Z0JRZBZR a

1239 8

b

1241

0Z0Z0Z0Z Z0S0Z0Zp 0Z0Z0o0j Z0Z0oBZ0 0s0ZpZ0Z Z0Zrm0Z0 0O0ZRZPO ZKZ0Z0Z0 a

0Z0Z0skZ Z0Z0SnZp 0o0sQOpZ Z0o0ZpZ0 0Z0Z0O0l ZPO0ZRZP 0Z0Z0Z0Z Z0Z0ZBJ0 a

1238 8

Annihilation of the defensive piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0Z0Z Z0Z0Zpak 0oNS0mpo ZPZ0Z0Z0 0ZPZqZ0Z Z0Z0A0ZP 0ZRZ0LPJ s0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1243 8 7 6 5 4 3 2 1

1246

rZ0ZkZ0s opo0a0op 0Z0Z0o0Z Z0ZqZ0Z0 0Z0Z0ZQZ Z0ZNZ0Z0 POnZ0OPO S0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1248

rZ0lka0s Z0ZbZpo0 pZ0Z0Z0o Z0ZnZ0Z0 0o0o0ZPZ Z0ZQAPM0 POPZ0Z0O Z0JRS0Z0 a

c

rZbZkZ0s ZpZpZpop pZ0ZpO0Z Z0Z0Z0Z0 0Z0Z0Z0Z Z0Z0Z0Z0 PZPZBOPO l0AQZRZK a

1245 8

b

1247

rZ0ZkZ0s ZpZ0Zpop nZpZ0Z0l o0Z0Z0Z0 0Z0ZBO0Z OPZ0Z0Ob 0A0Z0O0O SQZRZ0J0 a

Qm0lkZ0s Z0Z0ZpZp pZ0o0ZpZ Z0oPZ0Z0 0Z0Z0AbZ Z0M0Z0Z0 PO0Z0JPO Z0Z0ZBZR a

1244 8

King in the middle

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZkZ0s opZ0mpo0 0Z0Zpm0o Z0Z0l0Z0 0Z0Z0M0Z O0M0Z0L0 0OBZ0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1249 8 7 6 5 4 3 2 1

1252

rZblrZkZ Zpo0Zpo0 pZna0m0o Z0ZPo0Z0 0O0O0Z0Z O0M0ONZP 0ZQA0OPZ Z0S0JBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1254

rZ0ZkZ0s ZplbapZp pZnZpZ0Z Z0ZpmPo0 0Z0M0ZPZ O0M0A0Z0 0OPZQZBO Z0JRZ0ZR a

c

rZ0ZkarZ ZbZpZpZp po0ZpZ0Z Z0ZqZ0Zn 0Z0MNO0Z O0Z0ZQZ0 0O0ZPOBO S0ZRZKZ0 a

1251 8

b

1253

rZbZkZ0s opZ0apop 0Z0ZpZ0Z Z0Z0l0Z0 0m0ZBZ0Z ZQM0Z0Z0 PO0Z0OPO S0ARZ0J0 a

rZ0ZkZ0s opZbZpo0 nZqZ0Z0o Z0apOnZ0 0Z0Z0Z0Z O0Z0ZNA0 0Z0MBOPO ZRL0ZRJ0 a

1250 8

King in the middle

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0lkZ0s Z0ZbZpo0 pZ0ZpZ0o Z0a0O0Z0 0orM0M0Z Z0Z0L0Z0 POPZ0ZPO ZKZRZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1255 8 7 6 5 4 3 2 1

1258

0Z0ZrskZ o0l0Z0Zp Qo0Z0ZpZ Z0Zpa0Z0 0OpZ0ZPO Z0O0O0Z0 PZ0AKZ0Z S0Z0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1260

QZ0Z0Z0Z Zpl0Zkop 0Z0Zbo0Z Z0ZrZ0Z0 0ZBZ0Z0Z O0Z0O0Z0 0s0Z0OPO Z0S0J0ZR a

c

rm0Z0Zqs o0opjpZp bo0a0m0Z Z0Z0M0Z0 0ZPOPZpZ Z0M0Z0O0 PO0ZBZKZ S0A0ZQZR a

1257 8

b

1259

0Zks0ZrZ Lpl0ZpZp 0m0ZpZ0Z Z0a0ZpZ0 0Z0Z0Z0Z Z0A0ZPO0 POPM0Z0O S0Z0J0ZR a

rZ0mkZ0s obZqa0op 0ZpZ0o0Z Z0ZpZPZ0 0Z0M0A0Z Z0Z0ZBZ0 POPZQZPO S0Z0S0J0 a

1256 8

King in the middle

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zka0s Zbl0Zpop pZpZpZ0Z Z0Z0Z0Z0 0Z0ONZ0Z Z0Z0A0Z0 POQZ0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1261 8 7 6 5 4 3 2 1

1264

rZ0Zka0s opZnZpo0 0lpopZ0o Z0Z0O0M0 0Z0O0O0Z Z0O0Z0Z0 PZPZQZPO S0A0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1266

rZ0l0skZ opZ0opap 0mpZ0mpZ Z0L0Z0A0 0Z0OPZbZ Z0M0ZNZ0 PO0Z0OPO Z0ZRJBZR a

c

rZ0Zka0s opZ0Zpop 0lpZpm0Z Z0Z0Z0Z0 0ZBZRZ0Z Z0Z0ZQZP POPA0OPZ Z0JRZ0Z0 a

1263 8

b

1265

rZ0ZkZ0s opl0Z0ob 0Zpapo0o Z0Z0M0Z0 0ZBO0ZPO Z0Z0Z0O0 POPZQZ0Z Z0JRZ0ZR a

0ZrZks0Z o0lbapZQ 0Z0opZ0Z Z0Z0ZpZ0 0o0M0OBZ Z0Z0Z0O0 POPZ0Z0O J0ZRS0Z0 a

1262 8

King in the middle

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0ZkZ0s Z0ZqZ0op pZ0Zpo0Z O0Z0Z0Z0 0ZPZQZ0Z Z0Z0Z0Z0 0mBZ0ZPO ZRZ0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1267 8 7 6 5 4 3 2 1

1270

rZqj0a0s ZbZ0ZpZp pO0o0opZ Z0Z0Z0ZQ BZ0MPZ0Z Z0o0Z0Z0 0OPZ0OPO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1272

rZ0Zbjns ZpZ0Z0op pZ0ZQZ0Z l0Z0Zpa0 PZBm0Z0Z Z0Z0Z0Z0 0OPo0OPO S0A0S0J0 a

c

rZbZkarZ ZpZ0lpZp pm0Z0Z0Z Z0Z0ZpZN 0Z0ZpZ0Z ZBO0ZNO0 PO0L0O0O Z0ZRJ0ZR a

1269 8

b

1271

0Z0jqZ0s o0m0Zpap bZ0Z0ZpZ OnA0Z0Z0 0Z0oQZ0Z Z0Z0Z0OB 0Z0Z0O0O ZRS0Z0J0 a

0s0ZkZrZ obopmpZp 0anZ0O0Z Z0Z0Z0Z0 QZ0Z0Z0Z A0OBZqZ0 PZ0Z0OPO Z0ZRS0J0 a

1268 8

King in the middle

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0ZkZ0Z Z0Z0ZnZ0 0Z0Z0A0Z Zpo0Z0Z0 0ZpZPoBZ Z0Z0Z0Z0 rZ0S0ZPO Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1273 8 7 6 5 4 3 2 1

1276

0s0l0j0s L0Z0Zpop 0ZBZ0m0Z Z0Z0Z0Z0 Pabo0Z0Z ZPZ0Z0O0 0ZPO0O0O S0A0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1278

0ZrZkZ0s ZpZ0apop pAbZqm0Z O0Z0o0Z0 0m0ZPZ0Z ZNM0ZBZ0 0OPZQZPO S0Z0ZRZK a

c

rZ0ZkZns Z0Z0Zbop pZ0ZpZ0Z ZpAqO0ZP 0Z0o0OPZ Z0Z0Z0Z0 PO0Z0Z0Z S0ZQJBZR a

1275 8

b

1277

rZ0ZkarZ obZnZpZ0 0ZqZpZ0o Z0O0O0Z0 0o0Z0L0A ZPo0ZNZ0 PZ0ZBOPO S0ZRZ0J0 a

rZbZka0s ZplnZpo0 pZ0Zpm0o Z0o0Z0M0 0Z0O0Z0Z Z0ZBZNZ0 POPAQOPO S0Z0J0ZR a

1274 8

King in the middle

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ska0s Z0o0Z0op pZ0ZBZ0Z ZpZ0O0Z0 0Z0m0ZQZ Z0Z0Z0Z0 PZ0Z0OPO l0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1279 8 7 6 5 4 3 2 1

1282

rZ0Z0skZ opo0Zpop 0Z0Z0Z0Z Z0OpZ0l0 0O0MnZ0Z O0ZpOPOb 0Z0O0Z0O S0AQJ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1284

0Z0jnZ0s Z0s0Zpop po0ZpZ0Z Z0Z0Z0Z0 0ZqO0Z0Z A0Z0ZNLP PZPZ0OPZ Z0Z0S0J0 a

c

rZbZkZ0s Z0o0mpop pZpl0Z0Z Z0Z0S0Z0 0ZQZ0Z0Z Z0M0Z0Z0 POPZ0OPO S0A0Z0J0 a

1281 8

b

1283

rZ0ZkZ0s opZqm0op 0ZpZ0o0Z Z0Z0Z0Z0 0Z0O0Z0Z Z0Z0ZNZ0 PO0ZQOPO Z0S0A0J0 a

rZ0Z0j0s opM0Z0op 0ZnZRm0Z Z0l0Z0A0 0ZBZ0Z0Z Z0Z0ZpZ0 POPZ0OPO Z0JRZ0Z0 a

1280 8

King in the middle

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rl0ZkZrZ opZnZpZ0 0ZpZpabZ Z0Z0Z0Zp 0ZQZ0ZPO Z0Z0ZNZ0 POPZ0OBZ S0A0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1285 8 7 6 5 4 3 2 1

1288

rm0l0skZ opZ0Zpo0 0Z0Z0mpZ Z0a0Z0Z0 0ZBZ0ZPZ Z0M0Z0ZP PO0Z0O0Z S0AQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1290

rZ0lka0s opZnZpZp 0ZnZ0ZpZ Z0Z0ORZ0 0ZPZ0Z0Z Z0M0A0Z0 PO0ZBZPO Z0SQZ0J0 a

c

rZbZkZ0s o0Zqopap 0oNZ0Zpm Z0o0O0Z0 0Z0Z0Z0Z Z0M0Z0ZP POPZ0OPZ S0AQS0J0 a

1287 8

b

1289

rlbZkZ0s ZpZ0Zpop pZnZ0Z0Z Z0ZpZRZ0 0ZPZNZ0Z Z0Z0Z0Z0 PO0ZBZPa S0AQZ0ZK a

rZ0lka0s opZ0Zpop nZpZ0Z0Z Z0ZpO0Zn BZ0O0o0Z Z0L0Z0ZN POPZbZPO SNA0ZRJ0 a

1286 8

King in the middle

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0j0s ZbZ0apZ0 0l0opZ0Z o0Z0ZpZ0 0oBMPOQZ Z0Z0Z0Z0 POPZ0Z0O ZKZRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1291 8 7 6 5 4 3 2 1

1294

rZ0lkZ0s Zpm0ZpZ0 0Zpapo0Z o0Z0Z0Ob PZ0O0Z0o ZBO0ZNZP 0O0AQO0Z Z0J0S0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1296

0l0s0Z0s Z0ZNjpZp 0ZpZ0Zpa Z0Z0o0Z0 pZ0Z0ZPM Z0ZQZ0ZP POPZ0O0Z ZKZRZ0Z0 a

c

rZ0Z0skZ opZnZpap 0Z0L0ZpZ l0Z0O0Z0 0Z0Z0O0Z Z0M0Z0Z0 PO0Z0ZPO S0A0J0ZR a

1293 8

b

1295

0Z0ZrZ0s opo0Zkop 0l0ZbZ0Z mPZ0Z0Z0 0Z0Z0Z0Z Z0LBS0Z0 PZ0Z0OPO Z0Z0S0J0 a

qZ0ZkZ0s opo0Zpa0 0ZbZpZ0Z Z0Z0M0Zp 0l0O0Z0O Z0M0Z0Z0 POPZQZPZ Z0JRZ0ZR a

1292 8

King in the middle

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZkl0s ZpZnZ0ap pZ0s0ZpZ Z0ZPopA0 QZPZNZ0Z Z0Z0Z0Z0 PO0ZBOPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1297 8 7 6 5 4 3 2 1

1300

0Z0a0skZ Z0o0Z0l0 0o0o0ZpZ o0ZPo0Z0 0ZPZNZPZ O0Z0ZPZ0 KO0Z0Z0S Z0Z0Z0ZQ a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1302

0l0Z0Z0j Z0Z0Zrop QZRo0Z0Z ZPZ0o0Z0 0Z0ZPZ0Z Z0Z0Z0O0 0Z0Z0J0O Z0Z0Z0Z0 a

c

0Zks0ans opo0Zpop 0Zno0Z0Z Z0Z0Z0Z0 0Z0OPAbl Z0M0ZNZ0 POPZKZPO S0ZQZBZR a

1299 8

b

1301

rZ0ZkZ0s ZpZnZqo0 pZ0ZpZ0o Z0Z0Z0LP 0Z0ZKZPZ Z0OpZPaR PO0Z0Z0Z S0A0ZBZ0 a

0Z0ZrskZ ZboRZpZ0 0oqZpLpZ o0Z0O0Zp PZPS0Z0O Z0Z0ZNZ0 0ZPZ0OPZ Z0Z0Z0J0 a

1298 8

March with the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZQZ0Z Z0Z0Z0ZR 0Zko0Z0Z Z0o0o0a0 0s0ZnZ0Z l0Z0Z0Z0 PZ0Z0ZPJ S0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1303 8 7 6 5 4 3 2 1

1306

0ZrZ0Z0j ZpZ0Z0Zp pZ0ZpMpZ ZbZ0O0Z0 0Z0Z0Z0Z O0ZPL0Z0 0O0Z0S0O ZKZ0Z0Zq a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1308

rmbZka0s opZpZ0op 0lpZ0o0Z Z0Z0Z0Z0 0Z0ONZ0Z Z0Z0Z0Z0 POPZQOPO S0Z0JBMR a

c

0L0Z0s0s Z0Z0spZp 0Z0o0j0Z lBZPZpZ0 0Z0ZpZPZ Z0Z0Z0Z0 PO0Z0O0O S0Z0ZKZR a

1305 8

b

1307

0Z0Z0Z0Z ZrZ0jpZ0 0Z0ZpZpZ Z0OpZ0Zp qZnO0Z0O O0LRZ0O0 0o0Z0OKZ ZRZ0Z0Z0 a

0s0Z0ZkZ orZnZ0Zp 0ZbZRlpZ Z0ZpZPZ0 0Zpo0Z0Z O0M0ZPL0 0O0S0ZPO ZBZ0Z0J0 a

1304 8

March with the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0skZ ZpZbZ0Zp pZnZ0Z0Z Z0ZpS0M0 0Z0O0O0Z Z0Z0Z0O0 POBLRJPs Z0Z0Z0Zq a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1309 8 7 6 5 4 3 2 1

1312

0Z0Z0ZqZ ZRZQZ0Zp 0o0Z0Zks Z0Z0ZpZ0 pZ0Z0o0Z O0ZBa0ZP 0Z0Z0ZPZ Z0Z0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1314

0j0Z0Z0s opZblpZ0 0Z0ZpZ0Z ZnZpOpMp rZpO0O0O O0O0Z0O0 RAPZQZKZ S0Z0Z0Z0 a

c

0Z0srZkZ o0Z0Zpop BZpZ0Z0Z Z0apZ0l0 0Z0ZnZ0Z OPZ0OPZP 0AQZ0O0Z S0Z0S0J0 a

1311 8

b

1313

0Z0skZ0s ZbZ0Z0op pZnZ0Z0Z O0Z0ZpZ0 0oBO0Z0Z Z0Z0JNZ0 0Z0Z0OPO S0Z0Z0ZR a

0ZQZ0akZ Z0o0Zpop 0Z0Z0Z0s o0ZPs0Z0 0m0Z0M0Z OBM0A0Z0 0O0ZQO0Z S0ZRZ0ZK a

1310 8

March with the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZnskZ o0ZqZ0op bo0o0o0Z m0oPoPZ0 PZPZPZ0Z Z0OBA0M0 0Z0ZQZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1315 8 7 6 5 4 3 2 1

1318

0Z0Zks0Z Z0ZnZpLp 0Z0ZpZ0Z Z0Z0Z0Z0 0Z0o0Z0Z ZqZ0Z0Z0 0Z0A0OPO S0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1320

0Z0ZrZ0Z opZ0Z0j0 0Z0Z0Z0o Z0Z0Z0o0 0Z0L0Z0Z Z0O0MqOb PZ0Z0Z0O S0Z0Z0J0 a

c

0Zqa0ZkZ Z0Z0Z0Z0 0Z0o0Z0Z Z0oPo0s0 QZPZPo0Z S0Z0Z0Z0 0Z0Z0JPZ Z0M0Z0Z0 a

1317 8

b

1319

0ZrsbZkZ ZpZ0Z0Z0 pZ0ZpLpZ Z0Z0OpZ0 0O0Z0Z0Z O0Z0O0ZP 0Z0Z0Z0O Z0Z0S0J0 a

0Z0Z0Zrj opo0lpsp 0Z0o0onZ Z0Z0Z0ZQ 0ZPZ0O0Z Z0S0O0O0 POBZ0S0O Z0Z0Z0J0 a

1316 8

March with the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0Zrj opo0m0Z0 0Z0o0m0Z Z0OPo0Z0 0ONZPo0o Z0M0ZPZ0 PZ0ZBZPO Z0SQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1321 8 7 6 5 4 3 2 1

1324

rZblnZ0j Z0o0a0Zr 0oPo0ZnZ Z0ZPo0op pO0ZPoPZ O0MNZPZP 0AQZBZKZ ZRZ0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1326

rZbZnZkZ opZqZ0Zp nZ0o0arZ ZNZPo0Z0 PZNZPZ0A Z0Z0ZPO0 0O0ZBZ0Z S0ZQZRJ0 a

c

rZ0s0mkZ obZ0l0Zp 0o0ZpZpZ Z0opOpZ0 0Z0Z0OPZ Z0OBO0S0 PO0MQZ0O Z0ZRZ0J0 a

1323 8

b

1325

rZblnZ0j Z0o0Z0a0 0o0o0Z0s ZNZPo0o0 pOPZPoPm O0ZNZPZ0 0AQZBZKZ ZRZ0Z0ZR a

0S0Z0L0Z l0Z0s0ok 0Z0ZpZ0o Z0ZnOpZ0 pZpZ0Z0O O0O0ZbO0 0S0A0Z0Z Z0Z0ZKZ0 a

1322 8

March with the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0j ZpZ0Z0Zp 0Z0o0ZpZ Z0ZPZnl0 0O0Z0o0Z Z0Z0ZPZP rZ0Z0O0Z Z0S0LBZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1327 8 7 6 5 4 3 2 1

1330

bZ0Z0ZkZ Z0Z0Z0op 0Z0Z0o0Z ZpZ0o0Z0 0O0ZPZ0Z Z0ZrZqO0 0AQZ0O0O Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1332

0Z0Z0Z0Z L0Z0Z0jp pZ0onZpZ ZpZrs0Z0 0O0Z0Z0O O0ZBZ0Z0 0ZPZ0ZPZ Z0Z0Z0J0 a

c

rZ0Z0Zqs Z0ZkZ0Zp 0ZpZpS0S o0OpOpO0 Pa0O0Z0Z Z0ZQZNZ0 0Z0Z0O0Z Z0Z0ZKZ0 a

1329 8

b

1331

0Z0ZbZ0Z ZkZ0Z0l0 pZ0ZpZpZ ZpOpMpO0 0O0Z0O0Z O0Z0O0J0 0Z0ZBZ0Z Z0Z0Z0ZR a

rZbZ0a0s opZ0ZkZ0 0ZnZNZ0o Z0ZpO0o0 0ZpZ0Z0Z Z0O0Z0Z0 qZBA0OPO ZRZQJ0ZR a

1328 8

March with the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0s0Z a0Z0lpj0 0Z0o0Z0o Z0ZBoQoP 0O0ZPZ0Z Z0O0ZRO0 0Z0Z0O0Z Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1333 8 7 6 5 4 3 2 1

1336

rZ0ZkZ0s opZ0lpZ0 0ZpZbm0Z Z0ZPZ0A0 PONZ0Z0Z Z0OBZ0Z0 0Z0Z0JPa S0Z0LRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1338

rZbZRZ0Z o0Z0Z0jp pZpZ0Z0Z Z0l0Z0Z0 0Z0Z0Z0Z Z0M0ZPmP POPZ0Z0Z S0L0Z0ZK a

c

0Z0Z0ZkZ Z0Zronap pZnZpZpZ ZpZ0O0Z0 0Z0ZRAPZ O0M0ZNZP 0OPZ0Z0Z Z0Z0Z0J0 a

1335 8

b

1337

0s0s0Z0Z Z0Z0Zpjp pZ0o0ZpZ Z0o0o0Z0 0ZPZPZ0Z ZPM0Z0ZB PZ0S0Z0O Z0Z0Z0J0 a

0ZbZrZnZ ZpZ0s0j0 pZpS0opo Z0M0Z0Z0 0O0ZPZPZ Z0A0ZPZ0 0OPZ0ZKZ Z0Z0Z0ZR a

1334 8

March with the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZkZ ZpZ0arZp 0A0o0ZnZ ZPZPo0Z0 0O0ZPoPl Z0ZBZPm0 0Z0M0JPZ L0Z0Z0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1339 8 7 6 5 4 3 2 1

1342

0Z0Z0Zrj Z0oqZ0Zp pZRo0m0Z Z0ZPo0Zn 0O0ZPo0L Z0ZNZPZ0 PZ0ZNZ0O Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1344

0Z0Z0j0Z obZ0orZp 0l0oRo0O ZpsPZ0Z0 0Z0ZRo0Z OBZ0Z0Z0 0OPL0ZPZ Z0Z0Z0J0 a

c

rZbZkZ0M opo0Z0op 0Z0Z0Z0Z Z0ZpZqZ0 0ZBOnZ0Z A0Z0ZpZ0 PZ0Z0ZPO SNZ0L0J0 a

1341 8

b

1343

0Zna0Z0j Z0l0Z0s0 QZ0o0Z0o ZRoPo0o0 0ZPZPo0Z Z0A0ZPZ0 0Z0ZBZPO Z0Z0Z0J0 a

0Z0Z0Zrj Z0o0m0Z0 0o0o0m0a Z0ZPo0ZP 0OPZPo0Z Z0A0ZBZ0 0Z0Z0JPl S0ZQS0Z0 a

1340 8

March with the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0lrZkZ ZpZ0Zpo0 0anZ0Z0o o0Z0ZQZ0 0Z0o0A0O O0ZNZ0O0 0ORZPO0Z Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1345 8 7 6 5 4 3 2 1

1348

0Z0Z0skZ Z0ZQZpop pZ0ZpZ0Z ZpZ0Z0Z0 0Z0Z0Z0Z ZNO0Z0O0 PZPZqZKO S0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1350

0Z0ZnZkZ Z0mbZ0o0 0Z0o0Z0Z Z0oPo0A0 0oPZPZ0Z oPZBZ0ZP 0Z0Z0ZPZ Z0M0ZRJ0 a

c

0ZrZ0jns Z0o0ZpZ0 pZBo0Z0l ZpZ0Z0o0 0Z0MPZpZ Z0Z0Z0O0 PO0L0O0Z S0Z0ZRJ0 a

1347 8

b

1349

0Z0Z0skZ s0ZqZnon 0obZ0o0o o0o0ZPZ0 PZPoPAPO Z0ZPZ0LN 0ZBZ0Z0Z S0Z0ZRJ0 a

0ZrZ0Z0s ZpZbZkZ0 pZ0ZpM0Z Z0Z0ZpA0 0Z0L0ZPZ Z0Z0ZBZ0 POPZ0Z0l S0Z0Z0J0 a

1346 8

March with the king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0Z0j ZqZ0apZp pObopm0Z Z0Z0Z0Z0 0O0ZPO0Z Z0MQABZ0 0ZPZ0Z0O SRZ0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1351 8 7 6 5 4 3 2 1

1354

rl0Z0skZ Z0Zbapo0 pZ0opm0o Z0Z0Z0Z0 0o0APO0Z Z0ZBZ0M0 POPL0ZPO ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1356

rZ0ZkarZ ZbZ0ZpZ0 plnZpo0o Z0Z0O0Z0 QZBO0Z0Z M0Z0ZNZ0 0O0Z0OPO S0Z0ZRJ0 a

c

0Z0ZrskZ Z0lnZpZ0 0ZbZpZpo o0Z0O0aN 0o0A0Z0Z Z0ZBZ0ZP POPZQZPZ ZKZRZRZ0 a

1353 8

b

1355

rZbZ0skZ o0Z0apop 0o0Zpm0Z Z0l0M0Z0 0Z0Z0Z0Z Z0ZBZ0Z0 POPAQOPO Z0JRZ0ZR a

rZrZ0ZkZ Z0Z0opap 0Z0obZpZ oqZ0Z0O0 0o0APZ0O ZNZ0ZPZ0 POPZ0L0Z ZKS0Z0ZR a

1352 8

Opposite side castling

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0Z0s ZblnZpop pZ0ZpZ0Z ZpaPZ0Z0 0ZpZPZnZ Z0Z0ZNZP POBZQOPZ S0ANS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1357 8 7 6 5 4 3 2 1

1360

rZrZ0ZkZ Z0l0ZpZp 0Z0a0ZpZ Z0ZPo0Z0 pobZBZPZ Z0Z0S0Z0 POPZ0ZQO ZKARZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1362

rZrZ0ZkZ opZbZpa0 0Z0o0m0Z Z0Z0opL0 0Z0ZPZPZ ZBM0ZPZ0 POPZ0l0Z Z0JRZ0ZR a

c

rZbZ0skZ opZ0Z0ap 0Zno0ZpZ l0o0ZpZ0 0ZPmPO0O Z0MPANZ0 PO0LBZ0Z Z0J0S0ZR a

1359 8

b

1361

rZbZ0skZ o0Z0apo0 0lpopm0o Z0Z0Z0Z0 0Z0ZPO0A Z0M0Z0Z0 POPL0ZPO Z0JRZBZR a

0s0Z0skZ Z0Z0mpZp 0l0o0apZ opZPo0Z0 0Z0Z0Z0Z O0OBZ0Z0 0ONZQOPO ZKZRZ0ZR a

1358 8

Opposite side castling

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZ0ZkZ Z0l0Zpap pZ0obZpZ ZpZ0o0O0 0Z0ZPO0L ZPM0ARZ0 0OPS0Z0O ZKZ0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1363 8 7 6 5 4 3 2 1

1366

rZ0Z0skZ Z0Zbapop pZqopZ0Z Z0Z0Z0OQ 0o0APZ0Z ZPM0Z0Z0 0OPZ0O0O Z0JRZ0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1368

0ZrZ0s0j Zblnapop pZ0opZ0Z ZpZ0Z0O0 0Z0APZ0O O0M0ZPZ0 0OPL0Z0Z ZKZRZBS0 a

c

0Zrl0skZ ZbZ0Zpop pZ0ZpZ0Z ZpmpZ0Z0 na0ZPOPZ ZNZBA0M0 POPZRL0O Z0JRZ0Z0 a

1365 8

b

1367

rZrZ0ZkZ Zbl0apop pZnopZ0Z Z0mBZNO0 0o0ZPZ0Z Z0M0A0S0 POPZQO0O Z0JRZ0Z0 a

0Zrl0skZ ZbZnapop pZ0opZ0Z Z0Z0Z0O0 0o0APZ0O Z0Z0ZPZ0 POPLNZ0Z ZKZRZBS0 a

1364 8

Opposite side castling

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ ZbZ0apop 0Z0opZ0Z o0Z0m0OP 0o0MPZ0Z Z0Z0APZ0 POPL0Z0Z Z0JRZBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1369 8 7 6 5 4 3 2 1

1372

0ZbZ0skZ ZrZnapop pZ0ZpZ0Z l0ZpZ0O0 0Z0A0O0O Z0M0L0Z0 POPZBZ0Z Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1374

rZ0Z0skZ ZbZ0apop pZ0ZpZ0Z lpZ0Z0O0 0Z0MpO0O Z0Z0L0ZB POPZ0Z0Z ZKZRZ0ZR a

c

rZ0ZnskZ Z0lnZpop pZ0ZpZ0Z ZpZbZ0O0 0Z0MNZ0Z a0Z0Z0ZQ 0OPZBO0O Z0JRZ0S0 a

1371 8

b

1373

0srZ0ZkZ Z0Z0Zpo0 pZ0o0l0o Z0Z0ZPZ0 0ZnM0A0a ZPZ0Z0Z0 0ZPZQZRO Z0JRZ0Z0 a

rZ0Z0skZ Zbl0apop pZnZpZ0Z Z0Zpm0O0 0o0MPZ0O Z0ZBAPZ0 POPZNZQZ ZKZRZ0ZR a

1370 8

Opposite side castling

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0a0s ZplbZpop pZ0Z0Z0Z Z0Z0o0Z0 POBM0ZnZ Z0Z0Z0O0 0ZPZQO0O S0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1375 8 7 6 5 4 3 2 1

1378

rZ0Z0skZ obl0Zpop 0o0Zpm0Z Z0Z0M0Z0 0Z0o0Z0L Z0ZBZ0Z0 POPZ0OPO Z0JRS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1380

rZrZ0ZkZ opl0opZp 0Z0obmpL Z0Z0Z0Z0 0Z0ZPZPZ Z0M0ZPZ0 POPZ0Z0Z ZKZRZBZR a

c

0ZrZ0ZkZ Z0Z0Zpa0 0ZQobopZ o0Z0Z0Z0 0a0APl0Z oPM0ZPZ0 0ZPZ0Z0Z J0ZRZBZR a

1377 8

b

1379

0ZrZ0akZ o0Z0lpZp 0Z0ZbZpZ Z0ZpL0Z0 0Z0Z0Z0Z Z0M0ZPZ0 PO0Z0ZPO Z0JRZBZR a

rs0Z0ZkZ o0lbZpZ0 0Z0opapZ Z0Z0Z0Z0 0ZpMPZPZ Z0O0APZ0 PO0ZQZ0Z Z0JRZ0ZR a

1376 8

Opposite side castling

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0lrZkZ Z0Z0Zpa0 pZ0o0mpZ Z0o0Z0Z0 0ZBZPZ0Z Z0Z0APZ0 PO0L0Z0O Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1381 8 7 6 5 4 3 2 1

1384

0sbl0skZ Z0Z0opa0 pZpo0ZpA Z0ZPZ0Zp 0mpO0ZPO Z0M0ZPZ0 PO0L0Z0Z Z0JRZBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1386

0sbl0s0Z Z0o0opZk pZno0m0Z Z0Z0Z0LP 0ZpOPZpZ Z0M0ZPZ0 PO0ZNZ0Z Z0JRZBZR a

c

0sbl0skZ Z0Z0opZ0 pZ0o0apZ Z0o0Z0ZP 0mpOPZ0O Z0M0APZ0 PO0L0Z0Z Z0JRZBZR a

1383 8

b

1385

0sbl0s0Z Z0Z0Zpj0 0Z0o0ZpZ Z0oNmPZp 0o0ZPZ0O Z0Z0Z0Z0 PO0L0ZPZ Z0JRZBZR a

0Z0ZqskZ Z0Z0Zpa0 pZ0L0ZpZ ZrZ0m0Zp 0ZpZPZ0O Z0Z0APZ0 POBS0ZPZ Z0J0Z0ZR a

1382 8

Opposite side castling

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZqZ0skZ ZpZ0o0ap 0Zro0ZpZ o0Z0m0ZP PZ0ZPM0Z ZPZ0APZ0 0ZPL0Z0Z ZKZRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1387 8 7 6 5 4 3 2 1

1390

0Z0s0ZkZ Z0l0Zpo0 0Z0ZpZ0o o0ZnO0Z0 0o0Z0Z0O Z0ZNZ0Z0 POPZQSPZ ZKZ0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1392

rZ0Z0skZ Z0Zbapop 0l0opm0Z Z0Z0mPA0 po0MPZPZ Z0ZBZNZP POPL0Z0Z ZKZRZ0ZR a

c

0ZrlrZkZ o0Z0apo0 0ZpZnm0o ZpZpA0Z0 0Z0O0Z0Z Z0MBO0ZP POQZ0OPZ ZKZRZ0ZR a

1389 8

b

1391

rZrZqZkZ ZbZ0apop 0Z0opm0Z o0Z0m0Z0 0o0MPO0Z ZBZ0Z0A0 POPM0ZPO ZKZRL0ZR a

0Zrs0ZkZ Zbl0a0mp 0Z0Zpm0Z Z0Z0Z0Z0 po0ZNZPZ Z0ZBZ0ZQ POPMRZ0O ZKZRZ0Z0 a

1388 8

Opposite side castling

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zksqans Zpo0Zbo0 pZpZ0o0Z Z0Z0Z0Zp 0Z0MPZ0Z ZNZ0A0ZP POPZQOPZ S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1393 8 7 6 5 4 3 2 1

1396

0Zks0a0s ZponZqop pZ0Z0o0Z Z0o0Z0Z0 0Z0ZPO0Z ZNZ0A0ZQ PZPZ0ZPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1398

0ZkZ0Z0s o0Z0ZpZ0 0Z0aqO0Z Z0o0m0Z0 Nops0Z0O Z0Z0APO0 POQZ0ZKZ Z0Z0SRZ0 a

c

rZbs0ZkZ Z0lnapop pZ0opZ0Z Z0Z0Z0OQ 0o0APO0Z Z0M0Z0S0 POPZ0Z0O Z0JRZBZ0 a

1395 8

b

1397

0Zks0a0s ZpoqZ0Zp pZpZ0o0m Z0Z0o0o0 PO0ZPZbZ Z0ZPANZ0 0ZPM0OPO SQZ0ZRJ0 a

0sbZ0skZ o0l0Zpap 0ZpZ0ZpZ Z0Z0o0Z0 0ZBZNZPZ Z0Z0LPZ0 POPZ0Z0O Z0JRZ0ZR a

1394 8

Opposite side castling

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZ0a0j Z0lbZpZ0 pZnopOpO Z0Z0m0M0 0o0MPA0L Z0O0Z0S0 PO0Z0Z0O Z0JRZBZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1399 8 7 6 5 4 3 2 1

1402

0Z0l0skZ opZbopAp 0Z0o0ZpZ Z0Z0Z0Z0 0Z0snOPZ Z0M0Z0Z0 POPZ0Z0L Z0J0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1404

0Z0s0ZkZ ZrZ0apo0 pZ0obm0o Z0Z0Z0Z0 qo0APL0Z ZNZBZ0Z0 POPZ0ZPO ZKS0S0Z0 a

c

rZ0s0ZkZ oqZ0Zpap 0Z0obmpZ ZpZ0o0O0 0M0ZPZ0Z Z0Z0APZ0 POPLBZ0O ZKZRZ0ZR a

1401 8

b

1403

0srZ0ZkZ o0Z0opO0 0Z0obZpZ Z0Z0Z0Z0 qZ0APZ0Z o0Z0ZPZ0 0OPLNZ0Z ZKZRZBZR a

rZqZ0skZ o0opa0op 0o0Z0m0Z Z0ZpZ0Z0 0Z0O0M0Z O0Z0APZ0 0OPZQZPO ZKZRZ0ZR a

1400 8

Opposite side castling

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ o0o0Zpa0 0Z0o0Z0o ZpZ0m0ZB 0Z0Z0O0o Z0M0O0Z0 POPMQZPO Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1405 8 7 6 5 4 3 2 1

1408

0ZbZkZ0s Z0Zna0op pl0ZBZ0Z Z0ZQo0O0 0Z0Z0O0Z Z0M0Z0Z0 PsPZ0Z0O Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1410

0Z0ZrZkZ opZ0Z0Z0 0Z0apZPZ ZPo0Z0Zp 0Zpo0Z0Z Z0Z0ZrZB 0O0Z0lPO S0ZQS0ZK a

c

0Z0s0Z0Z o0ZrZnZ0 0ZPZqZkZ Z0ZNZpZp PZQZpOpZ Z0Z0Z0O0 0Z0S0Z0O Z0ZRZ0J0 a

1407 8

b

1409

0s0Z0s0j Z0Z0lpop pZ0SbZ0Z ZpZ0A0a0 0Z0MPZ0Z Z0O0Z0LP PO0Z0ZPZ Z0Z0ZBZK a

rl0s0ZkZ obZ0Zpo0 0o0apm0A Z0Z0Z0Z0 0Z0O0Z0Z ZBZQZNZ0 PO0Z0OPO Z0S0S0J0 a

1406 8

Counter attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0j0Z o0Z0ZpZQ 0o0Zpo0o Z0O0Z0Z0 0Z0Z0l0Z Z0O0Z0Z0 POBZ0ObO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1411 8 7 6 5 4 3 2 1

1414

0Z0Z0Zrj S0L0Z0Zp 0Z0S0Zpl Z0o0Z0Z0 0s0Z0Z0Z Z0Z0ZPJ0 0Z0Z0ZPO Z0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1416

rZ0s0ZkZ opZ0opZ0 0Z0Z0mpL Z0o0ZbM0 0ZPZ0Z0O lPM0ZPZ0 PZ0Z0JPZ Z0S0Z0ZR a

c

0Zrl0skZ o0Zbo0ap 0Z0ZNZpZ Z0ZpZ0A0 0Z0Z0Z0Z Z0Z0Z0Z0 POPZQZPO Z0JRZ0ZR a

1413 8

b

1415

0Z0l0skZ Z0Z0apZp 0ZPo0ZpZ ZNZPZ0Z0 0ZNZPm0Z ZQZ0Z0Zb 0Z0Z0O0Z Z0Z0SBJ0 a

rZ0Z0a0s o0j0ZpZ0 0ZbZ0l0o Z0Z0o0Z0 PZQZ0Z0o Z0Z0Z0Z0 0O0ZBOPO Z0S0ZRJ0 a

1412 8

Counter attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sbl0s0j Z0o0Z0Zp pZno0ZpL Z0ZNo0Zn 0ZpOPZPZ Z0Z0ZPZ0 PO0ZNZ0Z S0Z0JBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1417 8 7 6 5 4 3 2 1

1420

0ZrZ0ZkZ Z0l0apop pZ0o0Z0O Z0ZPmbO0 0Z0L0O0Z ZrZ0A0Z0 0OPS0ZRZ Z0ZKZBZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1422

0Z0Z0s0Z Z0Z0Zpj0 0ZpZ0ZpZ Z0MpZ0Zp 0Z0O0Z0l Z0ZBZ0sb PL0ZRSNZ Z0Z0Z0J0 a

c

rZ0s0ZkZ o0Z0lpop 0o0Zpm0Z Z0a0O0A0 0Z0Z0Z0L Z0MbZNZ0 PO0Z0OPO Z0JRZ0ZR a

1419 8

b

1421

rZbZ0skZ ZpZqZ0Z0 pZ0M0Zpo Z0oPZ0Zn 0ZPaNZ0Z Z0ZQZPO0 PO0ZBZKO S0Z0ZRZ0 a

rZ0ZrZkZ opZ0ZpZp 0Z0o0ZpL Z0o0Z0Zn 0ZPMPZqZ Z0M0Z0Z0 PO0Z0Z0O S0Z0S0ZK a

1418 8

Counter attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZka0s Z0Z0lpop 0Z0Zpm0Z ZNA0o0Z0 PZpZ0ZPZ Z0Z0ZPZ0 0OPL0Z0O Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1423 8 7 6 5 4 3 2 1

1426

rZ0ZkZ0s ZbZnZpo0 pZ0ZpZ0o l0Zna0ZN 0o0M0ZPZ Z0ZBAPZ0 POPL0Z0O ZKZRS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1428

0srZ0Z0j o0Z0opaP 0Z0o0m0Z l0ZbZ0O0 0o0APZ0Z O0Z0ZPZ0 0OPL0Z0Z Z0JRZBZR a

c

0ZrZ0s0j opl0Z0ap 0Z0Z0mpZ Z0ZpZ0Z0 0Z0ZpZPO Z0OBAPZ0 PO0L0Z0Z ZKZRZ0ZR a

1425 8

b

1427

0srZ0ZkZ o0Z0opap 0Z0obmpO lpZ0Z0Z0 0Z0APZPZ O0M0ZPZ0 0OPL0Z0Z ZKZRZBZR a

0srZ0ZkZ o0Z0opa0 0l0ZbmpZ ZpZ0A0L0 0Z0Z0ZPZ O0M0ZPZ0 0OPS0Z0Z ZKZ0ZBZR a

1424 8

Counter attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opl0opA0 0Z0Z0ZpZ Z0ZnZ0L0 0Z0Z0Z0Z Z0Z0ZpZ0 POPZ0ZPZ Z0JRZBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1429 8 7 6 5 4 3 2 1

1432

0s0Z0ZkZ Z0o0Z0mp 0Z0l0Z0Z ZroPoPZ0 pZ0Z0Z0Z O0Z0L0Z0 0OBZ0Z0O ZKZRZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1434

0Z0Zqs0j Z0onZpZp pZ0ZPo0Z mra0O0ZQ 0opZNZ0Z Z0Z0Z0O0 PO0Z0OBO S0ZRZ0J0 a

c

0Zks0ZrZ opo0ZpOp 0ZnZbZ0Z Z0aqZPM0 0ZpZNZPZ Z0ZpZ0Z0 POPZ0ZKO S0AQS0Z0 a

1431 8

b

1433

0Z0skZ0s a0o0Zpo0 pZpZ0Z0Z ZpZ0O0Zp 0O0MPlbm Z0O0Z0O0 PAQM0O0Z S0Z0S0J0 a

rZbl0skZ opo0Zpap 0Z0ZnZNZ Z0Z0Z0Z0 0Z0APZ0Z Z0M0Z0Z0 POPZ0ZPO S0ZQJBZR a

1430 8

Counter attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0ZrZka oqobZpZp 0Z0o0mpA Z0o0Z0ZP 0Z0ZPZ0Z O0Z0ZPZ0 0OPLNZPZ Z0JNS0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1435 8 7 6 5 4 3 2 1

1438

0Zrl0skZ Z0Z0apo0 0Z0ZnmpZ ZpZpO0Z0 0Z0Z0Z0Z ZPZ0A0ZP 0ZBM0OPZ SQZ0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1440

rZ0ZkZ0s Z0Z0apZ0 0Z0opZ0o oNZ0m0ZQ 0oqMPZ0Z Z0Z0Z0Z0 POPZ0ZPO Z0JRZRZ0 a

c

0ZrZ0ZkZ Z0lbZpa0 0Zro0ZpZ Z0Z0o0O0 po0MPO0Z Z0Z0A0Z0 POPS0L0Z ZKZ0Z0ZR a

1437 8

b

1439

rZblrZkZ opZ0apZp 0Z0Z0Z0A Z0Z0Z0Z0 0Z0Z0Z0Z Z0M0ZPZ0 PO0LBJnO S0Z0Z0ZR a

0ZrZ0ZkZ oplbopa0 0Z0o0ZpZ Z0ZPZ0ZP 0ZrM0Z0Z Z0Z0APZ0 POPZ0Z0L ZKZRZ0ZR a

1436 8

Counter attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0a0s opo0ZpZ0 0ZqZpZ0Z L0Z0Z0Zp 0ZPA0Z0Z Z0Z0Z0O0 PO0Z0O0O S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1441 8 7 6 5 4 3 2 1

1444

0Zrs0j0Z opZbapo0 0Z0ZpZ0Z l0Z0o0OQ 0Z0Z0O0O Z0MBZ0Z0 POPZ0Z0Z ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1446

rZbZkZ0s oplnZpo0 0Z0apZ0o Z0ZnM0Z0 0Z0Z0Z0Z Z0ZBZNA0 POPZQOPO Z0JRZ0ZR a

c

rZ0lrZkZ o0Z0Zpa0 0o0o0mpo Z0oPZ0Z0 PmNZPOPO Z0M0Z0Z0 0O0Z0Z0Z S0AQS0J0 a

1443 8

b

1445

rZbl0skZ ZpZnopap nZpo0ZpZ o0ZPZ0Z0 PZPZPOPO Z0M0A0Z0 0O0ZBZ0Z S0ZQJ0MR a

0ZblrZkZ s0Z0ZpZ0 po0o0ZpZ Z0oPmPZp PZPaNZnZ Z0ZBZ0MP 0O0A0ZPZ S0ZQZRZK a

1442 8

Counter attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0skZ opZ0Zpo0 0Z0ZpZ0o ZqZpO0ZP 0m0Z0Z0S ZNZPZ0L0 PO0S0OPZ ZKZ0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1447 8 7 6 5 4 3 2 1

1450

0Zrl0skZ ZpZbZpa0 pZ0o0mpZ Z0ZNZ0AP 0Z0oPZ0O ZnZ0ZPZ0 POPZQZ0Z ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1452

rZ0ZkZ0s o0ZnZ0Z0 0Z0aplnZ Z0ZpZ0Z0 0Z0OBZpo Z0L0Z0O0 PA0M0O0O S0Z0ZRJ0 a

c

rZ0l0skZ Z0Z0apop 0Z0obZ0Z o0m0oPZ0 0o0ZPZPZ ZPZ0ZQZP PAPZNZBZ Z0JRZ0ZR a

1449 8

b

1451

0ZrZ0Z0j Z0Z0o0Z0 0Z0oQZpa opZPZPZ0 0ZqZ0Z0Z ZPZ0ZPZ0 PZPZRZ0Z ZKZ0Z0Z0 a

0Z0ZrZkZ ops0Zpap 0Z0o0ZpZ l0ZPZ0L0 0Z0oNZPZ ZPZ0ZPZ0 PZ0Z0Z0Z ZKZRZ0ZR a

1448 8

Counter attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZbZ0skZ ZrZ0ZpZp pZ0o0mpL Z0oPm0OP NlpZ0Z0Z Z0Z0ZPZR PO0ZNZ0Z ZBJ0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1453 8 7 6 5 4 3 2 1

1456

rZrZ0Z0Z o0Zbokap 0Z0o0m0Z Z0Z0Z0O0 0o0MPZ0Z Z0Z0APZ0 qOPL0Z0Z ZNJRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1458

0ZrZ0Z0Z o0Z0ZQZ0 kZbApZ0Z Z0Z0O0Z0 pZnl0Z0Z Z0Z0ZBZ0 0ZPs0ZPZ ZRZRJ0Z0 a

c

0Z0Z0skZ Z0o0Z0a0 rZ0Z0lpZ ZpZ0o0Z0 pZ0ZPZ0Z ZPZPZNZR 0OPZQORZ ZKZ0Z0Z0 a

1455 8

b

1457

rZ0Z0Zrj ZpZblpmp 0Z0o0a0A oBmPo0ZP 0Z0ZPZ0Z Z0M0ZQZ0 PO0Z0Z0Z S0Z0JNS0 a

0Zks0Z0s ZRo0Z0Zp 0Z0Z0ZpZ Z0Z0o0Z0 0Z0ZPZ0Z Z0oqm0ZP PZ0ZQZPJ Z0S0Z0Z0 a

1454 8

Counter attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rlrZ0ZkZ o0Z0opap 0Zbo0mpZ Z0Z0Z0Z0 0o0MPZPO Z0Z0APZ0 POPLNZ0Z Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1459 8 7 6 5 4 3 2 1

1462

0Z0snskZ ZpZ0Zpop pZblpZnZ Z0Z0M0O0 0ZPO0O0Z ONZBZ0ZR 0L0Z0Z0O Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1464

rZ0Z0skZ ZpZqZpop 0ZpZnZ0Z Z0ZpOQA0 pZ0O0Z0Z O0Z0S0Z0 0O0Z0OPO S0Z0Z0J0 a

c

rmbl0skZ opZ0apop 0Z0ZpZ0Z Z0opO0Z0 0Z0O0Z0Z Z0MBZ0ZQ POPZ0OPO S0Z0J0MR a

1461 8

b

1463

rZbl0skZ o0ZpZpop 0o0Zpm0Z Z0m0Z0M0 0ZPZ0Z0Z O0A0Z0Z0 0OQZPOPO S0Z0JBZR a

rZ0Z0skZ ZbZ0Zpop pZ0o0m0Z Zpl0o0Z0 0Z0ZPZ0L Z0MBS0Z0 POPZ0OPO Z0Z0ZRZK a

1460 8

Defence

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ Z0opZpop pZ0Z0m0Z ZpZ0O0Z0 0Z0Z0O0Z ZBO0Z0Z0 PZPZ0ZPO S0AQJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1465 8 7 6 5 4 3 2 1

1468

0Z0s0skZ ZbZnZpap 0lpZpmpZ opZ0M0A0 PZ0O0L0Z ZBZ0Z0M0 0OPZ0OPO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1470

rmbZ0skZ ZpZ0lpo0 0Z0ZpZ0Z Z0ZpO0MQ 0o0Z0Z0Z Z0O0Z0Z0 0o0Z0OPO ZRZ0J0ZR a

c

rZbZ0ZkZ opZnZpZp 0Z0Z0ZpZ Z0O0Z0Z0 0Z0ZrZ0Z ZPZ0M0Z0 PZ0ZBJPO Z0ZRZ0ZR a

1467 8

b

1469

0Zbs0skZ Zpl0Z0op papZ0o0Z Z0Z0m0Z0 RZ0ZBA0Z Z0ZNZ0O0 0OQZPO0O Z0Z0ZRJ0 a

rZ0l0skZ o0Z0Zpo0 0ZpZbZ0A Z0ZpZ0ZQ NZ0a0Z0Z ZPZBZ0O0 PZPZ0O0O Z0Z0S0J0 a

1466 8

Defence

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srl0j Z0onZ0op 0o0ZRZ0Z o0Z0Z0M0 0ZPZ0oPZ ZPZ0Z0ZP PAQZ0ZKZ Z0Z0ZnZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1471 8 7 6 5 4 3 2 1

1474

0m0l0skZ s0Z0Z0Zp pZ0a0ZpZ ZpZbMPZ0 0ZpOpZ0Z Z0Z0O0ZQ PO0A0ZPZ ZBS0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1476

0ZQZRs0Z opZ0Z0ok 0ZnZ0Zpo Z0lpZrZ0 0Z0Z0Z0Z Z0O0ZNZP PO0Z0OPZ Z0Z0S0J0 a

c

rZ0ZkZ0s ZbZnZpop pl0ZpZ0Z ZpaNZ0A0 0Z0ZPZnZ ZBZRZNZ0 PO0ZQOPO S0Z0Z0J0 a

1473 8

b

1475

rZ0Z0s0Z ZbZqZ0Z0 0Z0Z0Znj ZNopa0ZN PZ0Z0Z0Z Z0Z0Z0ZR 0OQZ0OPZ Z0Z0ZRJ0 a

rZ0ZrZ0Z opZnapj0 0ZpZpm0o l0Z0M0Z0 0Z0O0A0O Z0OQZ0Z0 PO0Z0OPZ S0Z0S0J0 a

1472 8

Defence

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opZ0Zpop 0Z0Z0Z0Z Z0ZPZ0Z0 0ZPS0ZnZ O0M0Z0O0 0OQZBOqO Z0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1477 8 7 6 5 4 3 2 1

1480

rZbZ0s0j Z0Zpapo0 0ZnZNM0o o0Z0O0Z0 0Z0l0A0Z O0Z0Z0ZQ 0O0Z0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1482

rZ0Z0ZkZ opZ0Zpap 0mqZ0ZpZ Z0orO0M0 0Z0Z0Z0L Z0Z0Z0Z0 PO0Z0ZPO S0A0ZRJ0 a

c

0ZrZ0skZ Zbl0apop po0Z0Z0Z Z0mpO0Z0 0O0Z0OPZ M0S0ABZ0 PZ0Z0ZQO Z0Z0ZRJ0 a

1479 8

b

1481

rZ0Z0s0Z opZ0oNak 0Zno0Zpo Z0ZQZRZ0 0ZPZ0Z0Z Z0Z0A0Z0 qO0ZBZPO Z0ZRZ0J0 a

rZbZ0ZkZ opZ0Z0lp 0Z0ZpZ0Z Z0o0O0Z0 0ZPoQZpZ Z0ZBZ0O0 PO0Z0ZKO Z0Z0ZRZ0 a

1478 8

Defence

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ obZ0ZpZp 0o0ZpapZ Z0ZpZ0ZR 0ZPO0Z0Z OPZ0Z0ZR 0A0Z0OPO Z0ZQZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1483 8 7 6 5 4 3 2 1

1486

0ZrZ0ZkZ opZrZ0op 0Z0Z0Z0Z Z0l0opZ0 0Z0m0Z0Z ZPZRZPZ0 PZPLNZPO Z0ZRZ0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1488

rZbZkZ0s opZqZ0op 0o0opZnZ Z0ZNZ0AQ 0Z0Z0Z0Z Z0Z0Z0Z0 0OPZ0OPO S0Z0ZRJ0 a

c

0Z0sqskZ ZpZbapZp 0Z0o0ZpL o0ZNo0ZP 0ZPZnZ0Z Z0Z0ZNZ0 PO0ZBOPZ S0Z0J0ZR a

1485 8

b

1487

0Z0s0Z0j obZ0ZpoB 0o0Z0Z0Z Z0Z0Z0Z0 0lPZ0Z0Z ZPZ0Z0Z0 PZ0sQZPO Z0ZRZRZK a

0Z0s0j0Z Z0Z0apo0 pZ0o0Z0o l0Z0oPZ0 0m0Z0ZPZ Z0s0A0MQ PZPZ0Z0O J0S0ZRZ0 a

1484 8

Defence

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZblrZkZ o0s0Z0Z0 0o0ZpZ0o Z0ZpO0ZP PZpOnZPZ Z0O0ZRZ0 0ZPZQZBZ Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1489 8 7 6 5 4 3 2 1

1492

0s0Z0skZ o0Z0Zpo0 0Z0ZpZ0o Z0o0O0Z0 0ZPm0ZQM ZPS0Z0O0 QZ0Z0Z0Z Z0A0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1494

rZ0lnskZ o0ZpZ0op bo0Z0o0Z m0Z0ZPZQ 0ZPo0M0Z O0OBZ0Z0 0Z0Z0ZPO S0A0ZRJ0 a

c

0Zrs0ZkZ obZ0ZNo0 0o0Zpm0o Z0Z0Z0Z0 0Z0O0Z0Z Z0OQZ0S0 qZBZ0OPO Z0ZRZ0J0 a

1491 8

b

1493

0ArZ0akZ Z0Z0Z0o0 pZ0ZpZ0o ZpO0ZpZ0 0O0Z0Znl O0ZBObM0 0ZQZ0OPO Z0Z0SRZK a

rZ0Z0s0j opo0l0Zp 0ZnsbZpL Z0m0Z0ZP 0ZPZPZ0Z Z0M0ZNZ0 PO0ZBZPZ Z0JRZ0ZR a

1490 8

Defence

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0ZkZ Z0onZrap 0o0o0Z0Z Z0ZPo0o0 PMPZPm0Z Z0M0APO0 0Z0ZBZ0Z S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1495 8 7 6 5 4 3 2 1

1498

rZbl0ZkZ opZ0Zra0 0Z0o0mnZ ONZPo0Zp 0O0ZPo0Z Z0Z0ZPo0 0Z0ZBAPO Z0SQMRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1500

rZ0l0ZkZ opZ0mra0 0Zpo0ZpZ Z0ZPo0mp 0ZPZPo0O Z0MNZPZb PO0ZBA0Z S0ZQS0J0 a

c

rZbZ0skZ opo0l0a0 0Z0o0Z0Z Z0ZPo0o0 0ZPZPo0o Z0ZBZPm0 PO0ANMRZ S0ZQZ0J0 a

1497 8

b

1499

0s0ZnakZ Z0Z0Z0s0 pZ0o0Z0Z ZbZPo0lp 0ZNZPoPm L0Z0Z0ZP 0ORZBMPZ Z0S0A0J0 a

rZbZ0Zrj opo0ZnZp 0O0o0Z0Z ONOPs0Zn 0Z0ZPo0l Z0ZNZPoP 0L0Z0ZPZ S0S0ZBJ0 a

1496 8

Defence

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0snZkZ opo0Zpap 0ZnZbZpZ Z0ZNo0Z0 0ZPZPZ0Z Z0Z0ANZP PO0ZBOPZ S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1501 8 7 6 5 4 3 2 1

1504

0ZnZ0skZ ZRZ0Z0ap 0Z0o0m0Z M0oPo0o0 0ZPZ0o0Z Z0M0ZPZq 0Z0ZBZ0Z L0Z0A0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1506

rZbZ0s0j Zpo0Z0ap 0Z0o0Z0Z ZPOPo0Z0 0ZNZPo0l Z0M0ZPon 0ZQZBZ0O ZRZ0ARZK a

c

0Z0Z0Z0j Z0L0Z0a0 0Z0o0Zpo orZPl0Z0 0Z0ZNo0Z Z0Z0ZPZ0 0Z0Z0ZPO Z0S0Z0ZK a

1503 8

b

1505

rZ0l0s0j ZpobZ0Zp 0Z0O0ZpZ ZNZPopZ0 0O0ZPm0Z Z0S0ZPZ0 0ZQMBZ0Z Z0A0ZRJ0 a

rZbl0s0j Z0M0Z0an 0Z0Z0Z0Z o0LPo0Zp PZ0ZPo0Z Z0Z0ZPo0 0Z0MBZPO ZRZ0ZRJ0 a

1502 8

Defence

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0s0j ZpM0Z0ap 0Z0o0ZqZ Z0ZPo0o0 0O0ZPZPZ Z0Z0Z0O0 0Z0MnJ0Z ZRAQZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1507 8 7 6 5 4 3 2 1

1510

rZbl0skZ ZpZ0m0a0 0Z0o0m0Z Z0ZPo0Zp 0ONZPo0Z Z0M0ZpZ0 0Z0ZBAPO Z0SQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1512

rZbZka0s Zpl0Z0Z0 pZ0o0O0Z Z0Z0Z0o0 0Z0LPZ0Z Z0Z0Z0M0 POPZ0ZPO S0Z0S0J0 a

c

0Z0Z0s0Z Z0spapZk pZ0ZbZpZ ZpZ0OpZ0 qZ0A0OPo O0Z0Z0ZP 0OPLBZ0Z ZKZRZ0S0 a

1509 8

b

1511

rZbZ0ZkZ opZ0Z0o0 0Z0apZ0o Z0ZpZ0Z0 0Z0M0Z0l Z0Z0Z0MP PO0A0sPZ ZBSQZ0J0 a

0Z0s0ZkZ o0l0ZpZ0 0o0M0Zpo m0ZQZ0Z0 0Z0Z0Z0Z O0O0Z0ZP 0Z0Z0OPZ Z0Z0S0J0 a

1508 8

Defence

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0ZkZ ZpZrZpa0 pZ0O0Z0o O0Z0SQZ0 0Z0SNZ0Z Z0Z0Z0Zp 0Z0ZqOPZ Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1513 8 7 6 5 4 3 2 1

1516

rZ0ZrZkZ oplnZ0o0 0Z0Zpa0o Z0ZpZ0Z0 0ZpO0O0Z O0M0ONZ0 0OQZ0ZPO Z0Z0SRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1518

rZ0ZkZ0s Zblnapop pZ0opZ0Z Z0Z0Z0OP No0M0Z0Z ZPZ0APZ0 0OPZQZ0Z Z0JRZ0ZR a

c

rZ0ZkZ0s ZqZbapop pZ0opZ0Z Z0m0Z0OP No0MPZ0Z ZPZ0A0Z0 0OPZQO0Z ZKZRZ0ZR a

1515 8

b

1517

0s0ZrZkZ Zbl0apop pZ0opZ0Z Z0m0Z0O0 0o0APO0O Z0ZBZ0M0 POPL0Z0Z ZKZRZ0ZR a

rZ0s0ZkZ ZbZ0Zpop pZ0ZpZ0Z m0l0Z0O0 0o0ZPZ0Z Z0ZBZNZ0 POPZQZ0O ZKZRZ0S0 a

1514 8

Attack with pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s Z0lbapop pZ0opZ0Z Z0Z0Z0OP No0MnZ0Z ZPZ0A0Z0 0OPZQO0Z ZKZRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1519 8 7 6 5 4 3 2 1

1522

rZblrakZ ZpZnZpop pZ0ZpZ0Z Z0ZpO0Z0 0Z0M0OPZ ZPM0A0Z0 0OPZQZ0O ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1524

rZ0lkZ0s ZbZnapo0 pZ0ZpZ0o Z0mpO0Z0 0o0M0OPO Z0Z0A0Z0 POPLNZBZ Z0JRZ0ZR a

c

rZ0l0s0Z opZ0opjp 0ZnobZpZ Z0Z0Z0Z0 0Z0ZPOPO Z0M0Z0Z0 POPLBZ0Z S0Z0J0ZR a

1521 8

b

1523

rZ0ZrZkZ Z0lbapop pZnopZ0Z Z0Z0ZPO0 0o0MPZ0Z ZPM0A0Z0 0OPZQZ0O ZKZRZ0S0 a

0ZrZ0skZ Zbl0apop pZ0opZ0Z Zpm0m0O0 0Z0MPZ0O O0M0APZ0 0OPZ0L0Z ZKZRZBZR a

1520 8

Attack with pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZbZkZ0s Z0l0apo0 pZ0opZ0Z Z0Z0Z0O0 0Z0ZPOQO ZrM0Z0Z0 0ORZ0Z0Z S0A0J0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1525 8 7 6 5 4 3 2 1

1528

rZbZ0skZ Z0lnapop ponopZ0Z Z0Z0Z0Z0 PZ0ZPOPZ ZNMBAQZ0 0OPZ0Z0O S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1530

0Z0l0s0j Z0sbapop pZ0opm0Z ZpZ0m0ZP 0Z0MPZPZ Z0MBAPZ0 POPL0Z0Z ZKZRZ0ZR a

c

rZ0ZrZkZ Z0Z0apop pZbopZ0Z Z0m0Z0OP 0l0APO0Z Z0ZBZQZ0 0OPZNZ0Z Z0JRZ0ZR a

1527 8

b

1529

0sbZ0skZ Z0l0apop pZ0opZ0Z Z0Z0m0OP 0o0APZ0Z Z0Z0ZPZ0 POPLNZ0Z ZKZRZBZR a

qZ0ZrZkZ Zbs0apop pZ0Z0Z0Z Z0Z0o0OP 0onAPZ0Z Z0ZBZ0M0 POPZ0L0Z ZKZRZ0ZR a

1526 8

Attack with pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ Zblnapop pZ0opZ0Z Z0Z0Z0ZP NonAPOPZ ZNZ0Z0Z0 POPZ0L0Z Z0JRZBS0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1531 8 7 6 5 4 3 2 1

1534

0Z0s0m0j ZbZnZpop 0l0ZpZ0Z Z0apO0OP rZ0M0O0Z OpZBA0Z0 0O0ZNZQZ ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1536

rZbZ0skZ Z0Z0apop pZ0opZ0Z lpm0Z0O0 0Z0LPO0O ZBM0A0Z0 POPZ0Z0Z Z0JRZ0ZR a

c

0s0ZrakZ Z0lbZpop pmnopZ0Z ZpZ0Z0O0 0Z0MPO0O ZPZ0ABZ0 PZPLNZ0Z ZKZRZ0ZR a

1533 8

b

1535

0lrZrakZ obmnZpop 0o0opZ0Z Z0Z0Z0O0 0ZPZPO0O O0M0ABZ0 0O0M0ZQZ Z0S0ZRJ0 a

rZbl0skZ ZpZnopap pZ0o0mpZ Z0Z0Z0Z0 0Z0ZPOPZ ZNM0Z0Z0 POPZBZ0O S0AQJ0ZR a

1532 8

Attack with pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblrmkZ Z0Z0apop pZ0opZ0Z mpZ0Z0OP 0Z0MPO0Z Z0M0A0Z0 POPZQZBZ Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1537 8 7 6 5 4 3 2 1

1540

rZ0l0skZ Z0ZnZpap pZnopZpZ ZpZ0Z0O0 0Z0ZPO0O Z0OBMQZ0 PO0Z0Z0Z S0A0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1542

0s0Zka0s Z0lbZpop 0ZnopZ0Z Z0m0Z0OP po0MPO0Z Z0Z0A0Z0 POPLNZBZ ZKZRZ0ZR a

c

0ZrZ0skZ Zbl0apop pZnopZ0Z Z0Z0Z0Z0 no0ZPOPZ ZNZ0A0Z0 POPZ0LBO ZKMRZ0ZR a

1539 8

b

1541

0Z0ZkZ0s ZbZnapop pl0opZ0Z Z0Z0Z0OP 0s0ZPO0Z ZNM0ZQZ0 0OPZ0Z0Z Z0JRZBZR a

rZ0ZrZkZ opZnapop 0ZbopZ0Z l0Z0Z0O0 0Z0APO0O Z0M0ZQZ0 POPZ0Z0Z ZKZRZBZR a

1538 8

Attack with pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ ZbZ0apop pZ0opZ0Z ZpZ0Z0OP 0m0ZPO0Z Z0MBAQZ0 POPZ0Z0Z S0Z0J0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1543 8 7 6 5 4 3 2 1

1546

rZbZrakZ ZplnZpop pZ0opZ0Z Z0Z0Z0OP 0m0ZPO0Z ZNMBAQZ0 POPZ0Z0Z Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1548

rZ0s0ZkZ ZpZbapop pZ0opZ0Z Z0l0Z0O0 0Z0ZPO0O O0M0Z0Z0 0OPL0Z0Z ZKZRZBZR a

c

rZrZ0ZkZ ZqZba0op 0Z0opZPZ o0m0Z0Z0 0oQMPZ0Z Z0Z0A0Z0 POPM0Z0O Z0JRZ0S0 a

1545 8

b

1547

0s0ZrZkZ Zbl0Zpop pZ0ZpZ0Z Z0apO0OP 0Z0M0O0Z Z0O0ARZ0 0O0Z0Z0L Z0Z0S0J0 a

0Z0mnZkZ Z0l0ZrZp rZ0opZpZ Z0Z0O0Z0 poNZ0O0S Z0ZQZ0Z0 POPZ0Z0O ZNJRZ0Z0 a

1544 8

Attack with pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZba0Z Z0lnZpZk pZ0opZpO ZpZ0Z0A0 0Z0SPZ0Z ZBM0ZQZR POPZ0O0O Z0J0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1549 8 7 6 5 4 3 2 1

1552

rZ0ZkZ0s Z0ZnopZp 0Z0o0mpL o0Z0Z0Z0 0oqZPM0Z ZNZ0ZPZ0 POPZ0ZPO ZKZRZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1554

0srZnZkZ Z0Z0lpop 0ZbopZ0Z Z0Z0O0ZN po0M0ZPZ Z0Z0ZPZ0 POPL0Z0O ZKZRS0Z0 a

c

rZ0ZrZkZ Z0ZbZpap 0l0ZnZpZ Z0ZpZ0O0 po0O0Z0O Z0ZBO0M0 PO0LNO0Z ZKZRZ0ZR a

1551 8

b

1553

0ZrZ0skZ Z0l0apop pZ0o0m0Z Z0ZBoPZ0 0o0ZPZ0Z Z0Z0Z0M0 POPZQZPO Z0JRZ0ZR a

rZ0Z0s0j Z0Z0Z0op 0ZnZqa0Z o0Z0o0Z0 0o0oNZ0O Z0ZQZPZ0 POPA0ZPZ ZKZRZ0ZR a

1550 8

Attack with pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ Z0l0apo0 pZ0Z0m0o m0ZpZPZ0 0o0ZpO0Z ZBZ0A0ZP POPLNZPZ ZKZRS0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1555 8 7 6 5 4 3 2 1

1558

0Z0Z0skZ Z0Z0Z0Zp pZparZ0Z Z0ZRZpZq 0Z0O0obZ ZBO0A0O0 0O0M0Z0O Z0Z0SQJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1560

0Zks0a0s opZbZqZp nZpo0mpZ Z0Z0Z0Z0 0ZPM0M0Z O0Z0Z0O0 0O0Z0OBO S0AQZRJ0 a

c

0Zks0Z0s opZ0apop nlpZbZ0Z Z0ZpZ0Z0 0Z0O0O0Z Z0OBM0Z0 PO0A0ZPO S0ZQZRJ0 a

1557 8

b

1559

0j0s0Z0s opo0mpaq 0Zno0Z0o Z0Z0Z0Z0 0ZBOPZ0M Z0O0Z0AQ PO0M0Z0O Z0Z0ZRJ0 a

0Zks0Z0s opo0Zpop 0lnZpa0Z Z0Z0Z0Z0 0ZPO0ZnZ ZPZ0ANM0 PZ0ZQOPO SRZ0Z0J0 a

1556 8

Attack with pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmblkZ0s ZpZ0apZ0 pZ0o0ZpZ Z0oPo0Zn 0ZPZPZ0o Z0MBA0Z0 PO0ZNOPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1561 8 7 6 5 4 3 2 1

1564

rZ0ZkZ0s oblnapo0 0o0ZpZ0o Z0opO0Z0 0Z0Z0Z0Z Z0OBONA0 PO0Z0OPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1566

0ZrZka0s opZbZpo0 0lnZpZ0o Z0ZpZ0Z0 0Z0OnZ0A Z0M0ONZ0 POQZBOPO S0S0Z0J0 a

c

rZ0l0skZ Z0Z0apop pZbopZ0Z ZpZ0m0O0 0Z0ZPZ0O Z0M0APZ0 POPL0Z0Z Z0JRZBZR a

1563 8

b

1565

rZblka0s opZ0ZnZp 0ZpZ0opZ Z0o0o0Z0 0Z0ZPZ0Z Z0OPANZP PO0Z0OPZ SNZQZRJ0 a

0Zks0a0s Z0o0ZpZp boqZpZpZ o0ZpOnZ0 PZ0O0M0Z Z0Z0A0Z0 0OPZNOPO S0ZQS0J0 a

1562 8

Attack with pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbs0ZkZ Z0l0apop pZ0opZ0Z Zpm0m0O0 0Z0MPZ0O ZNZ0APZ0 POPZ0L0Z ZKZRZBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1567 8 7 6 5 4 3 2 1

1570

0m0Zrs0Z S0o0l0Zk 0oPo0Z0o ZPZBapZ0 0ZPZ0A0O Z0Z0Z0O0 0ZQZ0ZKZ Z0Z0S0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1572

rZ0lkZ0s Z0ZnapZp pZbZpZpZ ZpZpO0Z0 0Z0A0O0Z Z0O0LNZ0 POBZ0ZPO S0Z0ZRJ0 a

c

0ZkZ0s0s Z0o0Z0Zp pZ0aqm0Z Z0o0o0o0 PZNZPo0Z ZRZPZ0ZP 0ZPAQOPZ S0Z0Z0J0 a

1569 8

b

1571

0Z0ZbskZ Z0s0l0Zp pM0o0opZ Z0oPZ0Z0 0OPZPZ0Z O0Z0ZNmP 0Z0L0SPZ Z0Z0S0J0 a

rm0Zka0s o0ZnZpZp bopZpZpZ Z0ZpO0Z0 0Z0O0O0Z l0MBARZ0 PZPZNZPO S0ZQZ0J0 a

1568 8

Pawn breakthrough

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0arj opo0ZnZ0 0Z0o0mpo OPOPo0Z0 0ZNZPo0Z A0M0ZPZ0 0Z0ZBZPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1573 8 7 6 5 4 3 2 1

1576

rs0Z0ZkZ Z0lbm0ap po0o0m0Z Z0oPo0o0 POPZPo0Z Z0MNZPZ0 0Z0ABZPO ZRZQZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1578

rZ0lnakZ opobmrZp 0Z0o0Z0Z ZPOPo0o0 PZNZPo0Z Z0M0ZPZ0 0Z0ZBAPO S0ZQZRJ0 a

c

0ZrZ0Z0s lpZ0apj0 pZbZpZpZ Z0M0O0Zp 0OpO0O0O O0M0L0O0 0Z0Z0J0Z ZRS0Z0Z0 a

1575 8

b

1577

rZbZqs0j o0Z0Z0ap 0ZNo0m0Z Z0oPo0o0 QZPZPZ0Z Z0Z0ZPoP PS0Z0ZPZ ZRABZ0J0 a

rm0l0skZ opZ0Z0ap 0mpZ0ZpZ Z0ZpO0Z0 0Z0O0OpZ ZPM0A0Z0 PZ0LNZ0O S0Z0ZRJ0 a

1574 8

Pawn breakthrough

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0j Z0ZnZrZp ro0Zpo0a m0ZpO0Z0 Po0O0O0Z ZPZ0ANZP 0Z0ZNJRZ ZRZ0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1579 8 7 6 5 4 3 2 1

1582

0Z0s0a0s L0Z0Z0op 0okZpZ0Z o0o0m0Z0 PZqZ0M0Z Z0Z0A0Z0 0O0Z0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1584

rZ0lka0s ZpZbZpo0 0m0ZpZ0Z m0ZpO0Zp pZ0O0O0Z O0ZBZNZ0 0O0ZNZPO S0A0LRJ0 a

c

0Z0Z0l0Z Z0ZbZkop 0Z0Zpo0Z ZpZpO0Z0 nO0M0OPO Z0ZPLNZ0 0Z0ZKZ0Z Z0Z0Z0Z0 a

1581 8

b

1583

0ZrZ0Z0Z ZpZbmpj0 0Z0ZpZpZ l0ZpO0Zp Po0O0O0Z ZPZBZNOP 0Z0L0J0Z ZRZ0Z0Z0 a

0ZrZ0skZ o0ZnapZp 0o0ZpZpZ m0ZpO0Z0 0Z0O0O0Z OqM0ZQO0 0O0Z0SBO S0A0Z0J0 a

1580 8

Pawn breakthrough

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0s0Z lpZbZ0j0 0ZnZpZpZ o0ZpO0Z0 0Z0Z0O0Z O0Z0ZNM0 0Z0Z0ZPO S0L0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1585 8 7 6 5 4 3 2 1

1588

rZ0lrZkZ ZpZ0apZp pZ0ZpZpZ ZbZpO0Z0 0Z0A0O0Z Z0O0ZRZ0 POBZ0LPO S0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1590

0Z0snmkZ ZrlbZ0op 0o0o0o0Z oPZ0oPZ0 0ZPZPZPL O0S0A0Z0 0Z0ZBZ0O Z0ZRZNJ0 a

c

0Z0l0ZkZ Z0o0o0ap 0o0ZPZpZ Z0OPm0A0 rZ0Z0Z0Z Z0Z0Z0O0 0Z0LPZBO Z0Z0ZRJ0 a

1587 8

b

1589

rZrZ0ZkZ Z0Z0Zpop 0Sbopm0Z o0Z0Z0Z0 PZPO0Z0Z Z0MBZPZ0 0Z0J0ZPO Z0Z0S0Z0 a

0ZrZ0j0s ZpZqZ0o0 0ZnOpm0Z o0ApZpZp PZ0Z0O0Z Z0Z0ZBZP 0OPZ0LPZ Z0JRS0Z0 a

1586 8

Pawn breakthrough

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZnl0skZ opo0apZp 0ZnZpZpZ Z0OpO0Z0 0Z0O0O0Z Z0MBA0ZP PO0Z0O0Z S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1591 8 7 6 5 4 3 2 1

1594

rmnZqa0j ZpZ0s0Zp 0ZpZpZpZ o0OpO0Z0 NZ0O0OBZ Z0Z0Z0ZQ PO0A0S0O Z0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1596

rZ0Z0s0Z ZbZ0l0jp pm0o0opZ Z0o0Z0Z0 0o0ZPZNZ ZPm0ZNO0 PZ0L0OBO S0Z0S0J0 a

c

0ZrZ0j0s o0Z0Zno0 0ono0Z0Z Z0ZNZ0lp 0ZPZ0Z0Z ZQZ0Z0oP PO0Z0ZBZ ZRZ0ZRJ0 a

1593 8

b

1595

0s0Z0s0Z Z0ZbZkmR pZ0o0opZ mpoPZ0Z0 0ZPZPZ0Z Z0M0Z0M0 PO0ZBZPZ Z0J0Z0ZR a

rZnlkZns Z0Z0Zpap 0o0o0ZpZ oNZPo0Z0 PZPZ0Z0Z ZBZ0AQZP 0O0Z0OPZ S0Z0J0ZR a

1592 8

Pawn breakthrough

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0Z0s o0Zqm0a0 Popo0opm Z0Z0Z0Z0 0ZPZPZ0Z S0Z0MNO0 0O0Z0ZKO Z0AQZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1597 8 7 6 5 4 3 2 1

1600

0Z0Zrs0Z o0Z0j0a0 0o0oBZ0o ZRZ0ZPo0 0ZPZ0ZPZ Z0Z0Z0Z0 PO0Z0OPZ Z0JRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1602

0Zblnanj s0Z0ZrZp 0o0o0opZ o0oPZ0O0 PZPZPA0Z ZPLBZNMP 0Z0Z0S0Z Z0J0ZRZ0 a

c

rZbZ0Z0s Z0l0j0ap po0opo0Z Z0Z0Z0Z0 PZ0LPZ0Z Z0M0Z0Z0 0OPZBZPO S0Z0JRZ0 a

1599 8

b

1601

0Zbs0Z0Z Z0Z0ZkMp pZpo0o0O a0o0ZPo0 0Z0ZPZPZ Z0M0Z0Z0 POPZKZ0Z Z0ZRZ0Z0 a

rZbl0skZ ZpZ0o0Z0 0O0o0opZ o0mNZ0Z0 0ZPLPZ0Z Z0Z0Z0Z0 PZ0ZBZPO Z0ZRZRZK a

1598 8

Pawn breakthrough

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ Zbo0Z0op 0ono0a0Z o0ZNZpZ0 0ZPZnZ0Z Z0Z0ANO0 POQZPOBO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1603 8 7 6 5 4 3 2 1

1606

rm0ZkZ0s Z0o0lpo0 0o0o0m0Z o0ZPo0Zp 0ZPZPZbZ ZQZ0ZNO0 PO0M0OBO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1608

rl0ZkZ0s obZ0apop 0onopm0Z Z0Z0Z0Z0 0ZPZPA0Z ONM0Z0Z0 0OQZBOPO Z0ZRJ0ZR a

c

0Z0Z0skZ Zblnm0op 0o0o0Z0Z Z0ZPopZ0 0ZPZPZ0Z Z0ZNZ0O0 0L0M0OBO ZRZ0Z0J0 a

1605 8

b

1607

0Z0Z0Z0Z Z0Z0Z0Zb 0o0o0Z0j oPZPspsP 0ZPZpJPZ Z0Z0M0Z0 PZ0ZBZ0Z Z0Z0ZRZ0 a

0j0s0Z0s obo0ZqZ0 0o0o0Zpo Z0Z0o0Z0 QZPZPm0Z Z0O0MPA0 PZ0S0ZPO Z0JRZ0Z0 a

1604 8

Pawn breakthrough

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZnl0skZ opo0ZpZp 0Z0ZpZpZ mPOpO0Z0 0Z0O0O0a Z0MBA0Z0 PZ0Z0O0O S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1609 8 7 6 5 4 3 2 1

1612

0ZrZkZ0s Z0ZbapZp pl0opo0Z mpZ0ZPZ0 0Z0ZPZ0Z Z0M0ZNO0 POPL0Z0O ZKZRZBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1614

rZkZnZ0Z ZbZ0ZpZ0 pZpOpZpZ ZpA0Z0Zp PZPZ0O0Z ZPZ0ZRZ0 0Z0ZBZPO Z0Z0Z0J0 a

c

rZ0s0ZkZ opl0apm0 0ZbZpZpZ Z0ZpO0Zp 0Z0Z0O0Z ZPZ0Z0MN 0OPAQZPO Z0Z0SRZK a

1611 8

b

1613

rZ0Z0skZ Zbl0Zpa0 0Z0opZpZ o0mnO0Zp 0o0Z0ONL O0ZBZNZ0 0OPA0ZPO S0Z0ZRZK a

rm0Zka0s ZplnZpZp pZ0ZpZpZ Z0opO0Z0 0O0Z0O0Z O0MBA0LP 0ZPZ0ZPZ Z0Z0SRJ0 a

1610 8

Pawn breakthrough

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rlbZnskZ ZpZpZ0Zp pZ0ZpapL Z0Z0Z0Z0 0Z0A0O0Z ZNZBZ0Z0 POPZ0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1615 8 7 6 5 4 3 2 1

1618

rZqZkZ0s ZpZbapZp pAnZpZpZ Z0ZpO0Z0 0Z0Z0O0Z Z0MBZ0L0 POPZ0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1620

0Z0lkZ0s s0ZnapZp 0o0ZpZpZ m0opO0Z0 pZ0O0O0Z O0O0ANZN 0O0ZQZPO Z0Z0SRJ0 a

c

0Z0Z0ZkZ Z0Z0Zpop pZ0ZpZ0Z Z0ZpZ0O0 Po0ZrO0L Z0sRZ0Z0 0ZPZ0S0O l0Z0ZNJ0 a

1617 8

b

1619

rZ0s0ZkZ o0Z0ZpZp 0ZbZpOpZ Z0Z0Z0Z0 0Z0A0O0Z Zqo0L0Z0 0Z0Z0SPO Z0Z0S0J0 a

rZ0ZkZ0s opZnapZ0 nZpZpZpZ l0Z0Z0Op 0Z0ONO0O Z0Z0A0ZB POPZQZ0Z S0Z0ZRJ0 a

1616 8

Pawn breakthrough

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0ZkZ opZrlpZp 0ZpZpapZ Z0Z0Z0Z0 PZPOQZPZ ZPZRA0Z0 0Z0Z0OKO Z0ZRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1621 8 7 6 5 4 3 2 1

1624

rZ0l0skZ opZ0apop 0Z0Z0m0Z Z0Z0o0A0 0Z0mPZ0Z Z0M0ZPZP POPL0Z0Z Z0JRZBS0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1626

rmbZka0s ZpZ0Zpop pZ0ZpZ0Z Z0ZqZ0Z0 0Z0M0Z0Z Z0Z0A0Z0 POPZBOPO S0ZQJ0ZR a

c

rm0l0skZ opZbapop 0Z0opm0Z Z0Z0Z0Z0 0Z0MPZ0Z O0M0Z0Z0 BOPZ0OPO S0AQZRJ0 a

1623 8

b

1625

rm0Zkans opZ0opop 0Zqo0Z0Z Z0Z0Z0Z0 0ZPM0Z0Z Z0Z0Z0Z0 PO0Z0OPO SNAQS0J0 a

rZbZ0skZ o0o0ZpZp 0ZpZpA0Z Z0ZqZ0Z0 0Z0O0Z0Z O0Z0Z0Z0 0OPZ0OPO S0ZQJ0ZR a

1622 8

Pawn hunt

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrlka0s Z0ZbZpop pZ0opm0Z ZpZ0Z0Z0 0ZnMPZ0Z O0M0Z0O0 0OPZQOBO Z0ARZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1627 8 7 6 5 4 3 2 1

1630

ra0Z0skZ o0Znl0op bopZpZ0Z Z0OpZpZ0 0Z0OnZ0Z ZNZNA0O0 POQZPOBO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1632

rZ0l0skZ ZpobZ0ap 0Z0onm0Z oNZ0ZpZ0 0ZPZ0Z0Z Z0M0ZPO0 POQZ0A0O S0ZRZBJ0 a

c

rZbs0ZkZ Z0o0Zpa0 pmpZ0Zpo Z0Z0Z0Z0 0Z0MRZ0Z Z0Z0ZPZP PO0ZBAPZ Z0JRZ0Z0 a

1629 8

b

1631

rZbZrZkZ opZnZpZp 0Zpo0lpZ Z0Z0Z0Z0 0ZPaPZ0Z Z0M0A0Z0 PO0Z0OPO ZRZQSBJ0 a

rZ0ZrZkZ opZ0Zpap nlpobmpZ Z0Z0Z0Z0 0ZPZPZ0Z Z0M0MPZ0 PO0LBZPO S0A0ZRJ0 a

1628 8

Pawn hunt

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0s0j Z0ZqZpap pZ0obZ0Z Z0ZNo0ZQ 0ZBZPo0Z ZPZ0Z0Z0 PZRZ0OPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1633 8 7 6 5 4 3 2 1

1636

rZ0s0ZkZ o0Z0Zpo0 0ZpZ0Zqo Z0MpZbm0 0Z0Z0Z0Z ZPZ0ZPL0 PAPS0ZPO Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1638

0ZrZkZ0s mpZbapo0 0l0ZpZ0Z o0ZpOPZp 0ZnO0Z0Z O0MBZNZP 0O0Z0ZPZ S0A0LRZK a

c

rZbZ0lkZ opo0Z0s0 0Z0a0ZnS Z0ZPo0ZQ 0Z0ZNZPZ Z0O0ZPZ0 PO0Z0Z0Z Z0JRZBZ0 a

1635 8

b

1637

0s0l0s0j Z0ZbZ0Zp 0Zno0Z0a o0ZNZpZ0 ROBZpZ0Z Z0O0Z0O0 0ZNZQO0O S0Z0Z0J0 a

0Z0srZkZ opZ0Z0op 0Z0l0m0Z Z0ZpSQZ0 0Z0O0M0Z O0Z0Z0O0 0Z0Z0O0O Z0Z0ZRJ0 a

1634 8

Pawn hunt

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmbZ0skZ Zpl0apop pZ0opm0Z Z0Z0Z0Z0 0Z0MPO0Z Z0M0Z0L0 POPZBZPO S0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1639 8 7 6 5 4 3 2 1

1642

0m0ZrakZ Zrl0Zpop po0ZpZ0Z Z0Z0O0Z0 PZ0ANL0Z Z0Z0Z0ZP 0OPZ0ZPZ Z0ZRZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1644

0s0Z0skZ o0Z0Zpa0 0ZpopZpZ l0Z0m0Zp 0Z0ZPZ0O ZPM0Z0L0 PZPZBZ0Z Z0ZRJ0AR a

c

0Z0Z0ZkZ opZ0o0mp 0Z0opZ0Z sqZ0Z0OB rZ0ZPZ0Z O0O0ZPZ0 0ORZ0Z0L J0Z0Z0ZR a

1641 8

b

1643

rZbZ0skZ o0Z0opZp 0l0Z0ZpZ Z0ZpZ0Z0 0Z0L0Z0Z Z0Z0ZPZ0 POPZ0ZPO Z0JRZBZR a

rZ0s0ZkZ opLBZpap 0Z0Z0lpZ Z0Z0o0Z0 0Z0ZPZ0Z O0Z0ZPZ0 0OPZ0ZnO ZKARZ0ZR a

1640 8

Pawn hunt

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ o0Z0mpa0 0opZqmpo ZPZ0o0Z0 0ZPZPZ0Z ANM0ZQO0 PZ0Z0O0O ZRZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1645 8 7 6 5 4 3 2 1

1648

0Z0srZkZ o0Z0apo0 0ZpZ0l0o Z0ZpZ0Z0 0Z0ZPZnZ Z0M0Z0Ob POQZ0O0O S0ZRA0JB a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1650

rm0Z0skZ Zbl0apop po0opm0Z Z0Z0Z0Z0 0ZPMPZPZ Z0M0A0Z0 PO0Z0OBO S0ZQS0J0 a

c

0Z0s0ZkZ o0snZpo0 0ZpapZ0Z ZpZ0ZqZp 0ZPO0O0Z Z0A0Z0OP PO0Z0ZBJ Z0ZQSRZ0 a

1647 8

b

1649

rm0lka0s obZ0opop 0o0o0m0Z Z0o0Z0Z0 0Z0OPZ0Z ZPM0ZNZ0 PAPZ0OPO S0ZQJBZR a

0jrs0Z0Z ZbZnZ0o0 0Z0Z0o0Z Z0l0o0ZP po0ZPZ0Z Z0Z0ZBZ0 POPM0Z0Z ZKS0ZRL0 a

1646 8

Pawn hunt

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0ans Zpo0Zpop pZpl0Z0Z Z0Z0o0Z0 0Z0ZPZ0Z Z0O0ZQZP PO0O0OPZ SNA0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1651 8 7 6 5 4 3 2 1

1654

rZbZ0skZ opZpZ0op 0l0Zpa0Z ZNZ0mpZ0 0LPZ0Z0Z Z0Z0M0O0 PO0ZPOBO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1656

0Z0lnskZ ZpobZpop rm0Z0Z0Z Z0ZpZ0Z0 pZ0O0OPa O0M0OQMP 0O0Z0ZBJ S0A0ZRZ0 a

c

rm0lkZ0s obopZ0Zp 0o0ZpmpZ Z0Z0ZpZ0 0aPOPZ0Z Z0MBZPZ0 PO0ZQZPO S0A0J0MR a

1653 8

b

1655

0s0s0Z0j Z0Zna0op poqZpo0Z Z0ZbZ0Z0 PO0ANO0Z Z0O0ZBL0 0Z0Z0ZPO Z0ZRS0ZK a

rZbl0ZkZ ZpZ0spZ0 pZ0o0Z0o O0oPZ0o0 0ZnMPZnZ Z0ZBZ0Z0 0O0Z0OPO S0AQZRJ0 a

1652 8

Pawn hunt

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrs0ZkZ obZ0ZpZp 0onZplpZ ZBZ0Z0ZP 0Z0OPZ0Z Z0Z0LNZ0 PZ0Z0OPZ ZRZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1657 8 7 6 5 4 3 2 1

1660

rmblrZkZ ZpZpZpop 0o0Z0m0Z Z0ZPZ0Z0 0O0Z0Z0Z O0Z0Z0ZP 0Z0ZNOPZ S0AQJBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1662

0ZkZ0s0Z opZ0m0Z0 0ZpoPopZ lPZ0Z0o0 PZBZ0Z0Z Z0Z0Z0ZP 0L0Z0O0O Z0S0Z0J0 a

c

rZ0lkans Zpo0Z0op pZpZ0o0Z Z0Z0Z0Z0 0Z0OPZ0Z Z0Z0ZQZ0 PO0Z0OPO SNA0ZRJ0 a

1659 8

b

1661

0Z0Z0ZkZ Z0Z0spo0 0Z0Z0Z0o ZpZ0l0Z0 0ZbZ0ZQZ O0O0ZNZP 0Z0Z0OPZ Z0ZRZ0J0 a

0s0l0skZ Z0Z0Zpap pZ0o0Z0Z Z0ZBo0ZQ 0m0ZPo0Z MPZ0Z0Z0 PZ0Z0OPO Z0SRZ0J0 a

1658 8

Pawn hunt

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lkZ0s Zpo0apZ0 pm0Z0obZ Z0ZPoBZp 0Z0ZNZ0O Z0Z0ZQM0 PO0Z0OPZ Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1663 8 7 6 5 4 3 2 1

1666

rZblkZns opZnZpap 0Zpo0ZpZ Z0Z0Z0Z0 0Z0MPO0Z Z0M0Z0Z0 POPZBZPO S0AQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1668

rmbZ0Z0L opokZpZp 0Z0ZpZ0Z Z0ZpO0Z0 0Z0Z0l0Z Z0Z0Z0Z0 POPZ0OPO ZKZ0ZBMR a

c

rZ0Z0skZ opobZpo0 0Z0Z0l0o Z0ZPo0Z0 0ZQZ0Z0Z Z0O0ZPZ0 PZ0ZPZPO S0Z0JBZR a

1665 8

b

1667

rmbl0skZ opZ0mpap 0ZpZ0ZpZ Z0Z0Z0Z0 0Z0ZNM0Z Z0ZPZ0O0 POPZ0ZBO S0AQZRJ0 a

rZblka0s Z0Z0Zpop pZnZpm0Z ZpZ0Z0Z0 0Z0O0Z0Z ZBM0ZNZ0 PO0ZQOPO S0A0ZRJ0 a

1664 8

Pawn hunt

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0lkZ0s opo0Zpop 0Z0ZpZ0Z Z0Z0ZbZ0 0ZBOnZ0Z Z0O0ZNZ0 PZPZ0ZPO S0AQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1669 8 7 6 5 4 3 2 1

1672

0Z0s0ZkZ opl0Zpo0 0ZpMnZpZ Z0Z0O0Z0 rZ0O0Z0Z Z0Z0Z0ZR PO0Z0LPO Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1674

kZ0Z0Zrs opZqZpZ0 0mpZ0L0Z Z0Z0Z0A0 0ZPO0Zbo Z0ZBZ0Z0 PO0Z0OPJ Z0S0ZRZ0 a

c

0s0Z0akZ Z0Z0ZpZ0 0Z0o0ZpZ Z0ZPo0O0 pOQZPZ0Z J0Z0ZqZ0 PZ0ANZ0Z Z0Z0Z0Z0 a

1671 8

b

1673

rZbZ0s0Z ZpZ0Z0Zk po0Z0Zno Z0ZBo0l0 PONZPopZ Z0OQZ0Z0 0Z0Z0OPO Z0ZRS0J0 a

rm0l0skZ opa0Zpop 0ZpZ0o0Z Z0Z0Z0Z0 0Z0O0Z0Z Z0ZBZQZ0 POPZ0OPO S0A0S0J0 a

1670 8

Pawn hunt

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZ0ZkZ ZpZ0Zpop 0l0obm0Z Z0Z0o0Z0 nOPZPZ0Z Z0Z0ZPA0 0Z0L0ZPO Z0ZRJBMR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1675 8 7 6 5 4 3 2 1

1678

0Zks0arZ o0Z0ZpZp 0ZbZ0o0Z Z0o0oPZ0 0ZRmPZPZ ZPZ0ZBZP PZ0A0Z0Z Z0ZKZ0MR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1680

rZbs0ZkZ opo0Zpo0 0ZnZpl0o Z0Z0Z0Z0 0ZROPZ0Z O0Z0ZNZ0 0O0Z0OPO Z0ZQJBZR a

c

rZbZka0s opZnZpop 0ZqZ0Z0Z Z0o0Z0A0 QZBZ0Z0Z Z0o0ZNZ0 PO0Z0OPO S0Z0J0ZR a

1677 8

b

1679

rm0ZqZkZ oporZpap 0Z0Z0mpZ ZPZ0o0M0 0Z0ZPZ0Z AQO0ZNZ0 PZ0Z0OPO Z0Z0SRJ0 a

nm0lka0s Z0Z0opop 0ZpZ0Z0Z ZpZ0O0Z0 0ZpO0Z0M Z0MbZ0Z0 0O0ZBOPO Z0AQZRJ0 a

1676 8

Advantage in development

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0Zka0s o0Z0lpop 0ZpZ0m0Z ZpZ0o0A0 0ZBZPZ0Z ZQM0Z0Z0 POPZ0OPO S0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1681 8 7 6 5 4 3 2 1

1684

rZ0lka0s opZ0Zpop 0ZpobZ0Z Z0m0Z0Z0 0ZPL0MnZ ZPZ0Z0O0 PA0ZPO0O S0Z0JBMR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1686

rZbZkZ0s opZqa0op 0ZnZ0o0Z ZNZpo0Z0 0Z0Z0A0Z Z0ZBZQZ0 POPZ0OPO Z0ZRS0J0 a

c

rlbZkZ0s ZpZnapZp pZ0Z0opZ Z0Z0Z0Z0 0OBM0O0Z O0M0O0Z0 0Z0Z0ZPO Z0SQZRJ0 a

1683 8

b

1685

0ZrZka0s opZqo0op 0Z0Z0obZ Z0APZ0Z0 0mNZ0ZPZ Z0Z0ZNZP POnZPOBZ S0ZQZRJ0 a

rmbZkZ0s opZ0Zpop 0Z0a0Z0Z l0ZpM0A0 0Z0Z0Z0Z Z0ZBZ0Z0 Po0Z0OPO ZRZQZRJ0 a

1682 8

Advantage in development

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZkZns ZplbZpap pZnZpZpZ Z0ZpO0A0 0Z0M0Z0L Z0ZBZNZ0 POPZ0OPO S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1687 8 7 6 5 4 3 2 1

1690

0Z0ska0s ZblnZpop pZ0Z0Z0Z Z0Z0o0O0 0oBZpO0Z Z0Z0A0ZQ POPZNZ0O Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1692

rZ0lka0s opZ0Zpop nZ0ZbZ0Z ZNZpM0Z0 0Z0O0A0Z Z0Z0Z0Z0 PZ0ZQOPO ZRS0Z0J0 a

c

rZbZka0s opZ0Zpop 0ZnmpZ0Z ZqZ0Z0M0 0Z0o0Z0Z ZBZQZNZ0 POPA0OPO S0Z0S0J0 a

1689 8

b

1691

0sbZ0a0s opM0jpop 0ZnZpm0Z Z0Z0M0Z0 0ZBZ0Z0Z Z0Z0A0Z0 PO0Z0OPO S0Z0J0ZR a

0Z0lkZ0s ZbZpapop pZnZ0Z0Z Z0OpO0M0 0ZpZ0A0Z Z0Z0Z0O0 Ps0Z0OBO S0ZQZRJ0 a

1688 8

Advantage in development

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmblkZ0s Z0o0apZ0 0o0Z0Z0m oPZpO0op PZ0O0Z0Z Z0ZBZNZ0 0Z0MQOPO S0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1693 8 7 6 5 4 3 2 1

1696

rmbZ0Zks opZ0lpap 0Z0opZpZ ZNZ0Z0Z0 0ZBMPZ0Z Z0Z0O0Z0 POPZ0ZPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1698

rZbl0skZ opZ0o0ap 0Z0o0ZpZ Z0oPmPZn 0ZPZ0Z0Z Z0M0ZPZP PO0L0APZ S0Z0JBMR a

c

rZ0l0skZ opona0op 0ZnobZ0Z Z0Z0Z0Z0 0ZPZ0O0Z Z0Z0M0O0 PO0L0ZBO S0A0J0MR a

1695 8

b

1697

rZ0Zka0s o0l0opop 0ZnZ0m0Z ZpZ0Z0Z0 0ONZ0ZbZ O0Z0ONZ0 0A0Z0OPO S0ZQJBZR a

rm0s0ZkZ ZpZ0lpop 0Z0Z0ZbZ o0anZ0Z0 0Z0ZpZPO O0M0O0Z0 0OQM0OBZ S0A0J0ZR a

1694 8

Advantage in development

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lkZns ZpZ0Z0ap pZ0opZpZ Z0Z0m0Z0 0Z0ZPA0Z M0Z0ZNZ0 0ZPZ0OPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1699 8 7 6 5 4 3 2 1

1702

rZbl0skZ opopapop 0ZnZ0m0Z Z0Z0Z0A0 0ZBL0Z0Z Z0M0ZNZ0 POPZ0OPO Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1704

rZ0lka0s ZbZ0Zpop pZ0Zpm0Z ZpZ0Z0Z0 0m0O0Z0Z ZBM0ZNZ0 PO0ZQOPO S0ARZ0J0 a

c

rZbZkm0s opo0lpo0 0Z0o0Z0o Z0Z0Z0Z0 0ZPM0O0Z Z0O0O0O0 PZQZ0JPZ S0Z0ZBZR a

1701 8

b

1703

rZbZ0skZ o0Zplpop 0onZpm0Z Z0a0Z0Z0 0ZPZ0Z0Z Z0M0Z0O0 PONAPOBO S0ZQZRJ0 a

rZ0lkZ0s ZpobZpap pZnZ0ZpZ Z0A0Z0Z0 BZPZPo0Z Z0Z0ZNZ0 PO0Z0OPO S0ZQJ0ZR a

1700 8

Advantage in development

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zkans opo0Zbop 0l0ZNo0Z Z0Z0m0Z0 0ZBZNAPZ Z0Z0Z0Z0 POPZQO0O Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1705 8 7 6 5 4 3 2 1

1708

rZbj0m0s opZnZqZp 0ZpZ0o0S Z0ZpZ0Z0 0Z0OpM0Z Z0MBZ0L0 POPZ0OPZ Z0J0S0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1710

rmbZ0Zns opo0Z0j0 0Z0Z0Z0o Z0ZBO0Z0 0a0O0Zpl Z0Z0ZpM0 POPZ0ZPZ S0AQZRJ0 a

c

rZbl0s0Z ZpZnjPo0 pZ0ZpZ0Z Z0OpO0ZQ 0Z0Z0Z0Z Z0M0Z0Z0 POPZ0OPZ Z0JRZ0ZR a

1707 8

b

1709

rm0ZkZ0s opZ0Zpop 0Zpaqm0Z Z0Z0Z0Z0 0Z0O0A0Z Z0MQZ0Z0 POPZNZPO Z0JRZ0ZR a

0ZkZ0a0s opZ0Zpo0 0ZnZ0l0o Z0ZQZ0Z0 0Z0Z0ZbZ Z0Z0O0Z0 PO0Z0OPO Z0JRZBMR a

1706 8

Advantage in development

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ska0s opZnZpop 0l0Z0Z0Z Z0Z0Z0Z0 0Z0MNZ0Z Z0Z0Z0Z0 PO0Z0OPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1711 8 7 6 5 4 3 2 1

1714

rZbZ0skZ o0l0apop 0o0Zpm0Z Z0Z0Z0A0 0Z0M0Z0Z Z0MRZ0Z0 POPZQOPO Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1716

rZ0l0skZ opZ0Zpop 0apM0m0Z Z0Z0m0Z0 0OPZPZbZ O0M0ZPO0 0Z0Z0ZBO S0AQJ0ZR a

c

rZbZkZ0s Zplnapo0 pZ0opZ0Z Z0Z0Z0On 0Z0MPZ0Z Z0MBZ0Z0 POPZ0Z0O S0AQZRZK a

1713 8

b

1715

rmbl0skZ Zpo0Zpop 0Z0Zpa0Z o0ZnZ0Z0 0ZNO0Z0Z O0ZBZNO0 0OPAQZ0O S0Z0J0ZR a

rZblka0s Z0Z0opop pZpZ0Z0Z Z0opO0Z0 0Z0Z0Z0Z Z0O0ZNZ0 POPZ0OPO S0AQS0J0 a

1712 8

Advantage in development

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZkZ0s opZ0Zpop 0Z0Zpa0Z Z0m0Z0Z0 0Z0SBZ0Z Z0Z0ANZ0 PlPZQOPO Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1717 8 7 6 5 4 3 2 1

1720

rm0Z0ZkZ ZplbZpap pZ0Spo0Z Z0Z0Z0ZB 0Z0ZPO0Z ZNM0Z0Z0 PZPL0ZPO Z0Z0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1722

rm0Z0ZkZ opo0Z0Z0 0Z0o0ZpZ Z0ZPZ0Z0 0ZPZpsqZ Z0ZQZBZR PO0ZKOPZ Z0S0Z0Z0 a

c

rmblkZns ZpZ0Zpop pZ0o0Z0Z Z0oPZ0Z0 0Z0ZPL0Z Z0M0Z0Z0 POPZ0ZPO S0Z0JBMR a

1719 8

b

1721

0sbl0s0j opMnZpa0 0Z0Z0Zpo Z0Z0Z0Z0 0Z0M0Z0Z ZBZ0Z0Z0 PO0Z0ZPO Z0SQS0ZK a

rZbZ0skZ ZpZnZpo0 0l0ZpZ0o o0ZnZ0Z0 0O0Z0Z0A Z0OBONZ0 0Z0L0OPO Z0S0ZRJ0 a

1718 8

Advantage in development

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZkZ0a0s Zpobl0Zp pZ0Z0o0m Z0o0Z0o0 0ZNMPZ0Z Z0ZQZ0A0 POPZ0OPO Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1723 8 7 6 5 4 3 2 1

1726

0s0Zka0s Z0o0mbop 0o0Zqo0Z M0o0Z0Z0 PZPZ0O0Z ZNZ0AQZP 0O0Z0ZPZ S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1728

rZbs0Z0Z o0ZnjpZp 0Z0Zpo0Z ZpZ0Z0ZQ 0ZBONZ0Z l0Z0Z0Z0 0Z0Z0OPO Z0S0ZRJ0 a

c

rZ0Zkans Z0oqZpop bo0ZpZ0Z o0Z0O0Z0 0ZPZ0Z0Z ZNZBZ0Z0 PZ0ZQOPO S0A0ZRJ0 a

1725 8

b

1727

0Z0Zka0s ZbZrZpop pZ0ZpZ0m Z0Z0L0Z0 0oqZ0Z0Z Z0Z0Z0O0 PA0OPO0O SNZ0JBS0 a

rl0Zka0L Zbopmpo0 pZ0m0Z0Z Z0ZPM0o0 pZ0Z0Z0Z Z0M0Z0Z0 POPZ0OPO S0Z0S0J0 a

1724 8

Advantage in development

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rlbZkZns o0Z0ZpZp 0ZpZpZpZ ZNZpZ0Z0 0ZBZ0Z0Z Z0Z0ZQZ0 POPZ0OPO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1729 8 7 6 5 4 3 2 1

1732

rZ0Z0skZ ZpZblpa0 pZ0o0Z0o Z0oPm0on PZ0ZPZPZ Z0M0APZ0 0O0LBZ0O ZRM0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1734

0s0ZkZ0s opZblpo0 0Z0ZpZnZ Z0ZpO0Z0 0ZpO0ZBZ O0O0Z0O0 0ZPL0ZPZ ZRA0ZRJ0 a

c

rZbl0skZ ZpZ0Zpap pZpo0mpZ Z0Z0m0Z0 0ZPZPZ0Z ZPM0APZ0 PZ0LNZPO Z0ZRJBZR a

1731 8

b

1733

rmbZnskZ Zpl0Zpap pZ0o0ZpZ Z0oPO0Z0 PZ0Z0O0Z Z0M0ZNZ0 0O0ZBZPO S0AQZRJ0 a

rZbl0skZ Z0ZnZpap pZ0o0ZpZ ZpZPo0Z0 0Z0ZPmPZ Z0M0APZ0 POBZNL0O S0Z0J0ZR a

1730 8

Positional pawn sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ apZ0Z0o0 pZ0Z0o0Z Z0Z0o0Z0 0OPoQO0Z O0Z0Z0Z0 0A0M0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1735 8 7 6 5 4 3 2 1

1738

0s0a0s0j Z0Z0Zqop 0ZnobZ0Z o0ZNo0Z0 0ZBZ0Z0Z ZPOQS0Z0 RZ0Z0OPO Z0Z0ZNJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1740

0sqZ0skZ Z0m0a0op 0Z0opm0Z opZ0ZpZ0 0Z0O0Z0Z ZPZ0ONO0 PA0ZQOBO S0Z0ZRJ0 a

c

0ZkZrZ0s opZbZ0Z0 0Z0mpo0Z l0ZpZ0o0 PZpO0O0Z Z0O0ZBZP 0ZPL0ZPA S0Z0ZRJ0 a

1737 8

b

1739

0ZqZ0skZ ZrZ0Zpap po0obZpZ Z0m0o0Z0 0ZPZPO0Z Z0M0ABZP PO0L0ZPZ Z0ZRZRJ0 a

0Z0srakZ ZpZ0Zbop 0lpo0o0Z o0m0m0Z0 0ZPLPM0O APM0Z0O0 PZ0Z0OBZ Z0ZRS0J0 a

1736 8

Positional pawn sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ opo0Zpop 0ZnZ0Z0Z Z0ZnO0Z0 0a0o0M0Z Z0ZPZNZ0 POPZBJPO S0AQZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1741 8 7 6 5 4 3 2 1

1744

0s0ZrZkZ o0mbZpap 0Z0o0lpZ Z0oPZ0Z0 0Z0ZPO0Z O0MBM0Z0 0OqZ0ZPO ZRZ0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1746

0Z0ZrZkZ Zbl0s0ap po0opmpZ Z0Z0Z0Z0 Pm0ZPO0Z ZNM0A0S0 0OPZ0LBO Z0ZRZ0J0 a

c

rZ0m0skZ obZqa0Zn 0o0Z0o0o Z0o0oPZP 0ZPoNZPZ Z0ZPZNA0 PO0ZQZBZ S0Z0ZRJ0 a

1743 8

b

1745

rZ0ZrZ0Z ZpZbZpj0 pZ0o0mpZ Z0oPm0L0 PZ0lPZ0o Z0M0ZPZ0 NO0ZBZPO ZRZ0ZRZK a

rm0Zka0s Z0Z0Zpo0 pZ0o0l0o Z0oPZ0Z0 Po0ZPZbZ Z0Z0ZNZ0 0OQM0OPO S0Z0JBZR a

1742 8

Positional pawn sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lkZ0s obonZpop 0o0ZnZ0Z Z0OpO0Z0 0Z0O0Z0Z Z0Z0APZ0 PZ0MBZPO S0ZQJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1747 8 7 6 5 4 3 2 1

1750

rs0mbZkZ Z0l0a0op pm0o0o0Z ZpZPoNOP 0Z0ZPZ0Z ZPO0ANZ0 0ZBZ0O0Z S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1752

rZ0l0skZ o0Z0Zpop bono0m0Z Z0o0o0A0 0ZPOPZ0Z O0OBZPZ0 0Z0ZNZPO S0ZQZRJ0 a

c

rZbl0skZ ZpZ0ZrZ0 pZ0o0mnZ Z0ZPo0o0 PZ0ZPoPZ ZQM0ZPZ0 0ORABM0Z Z0Z0ZRJ0 a

1749 8

b

1751

qZ0s0ZkZ obs0apop 0onopm0Z Z0o0Z0Z0 0ZPO0Z0Z ZPZ0ONZ0 PA0MQOPO ZBSRZ0J0 a

rZ0l0ZkZ opM0Zrap 0Z0o0mnZ Z0ZPo0Z0 0Z0ZPo0Z Z0ZNZPZb POQABZ0O Z0S0ZRJ0 a

1748 8

Positional pawn sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZqZ0skZ ZpZ0m0a0 rZ0o0m0o ZRoPo0o0 0ZPZPo0Z ZQM0ZNO0 PZ0Z0OKO Z0A0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1753 8 7 6 5 4 3 2 1

1756

rZbZnskZ opo0l0Z0 0Z0o0ZpZ Z0OPopZ0 0ONZ0Z0Z Z0M0Z0Z0 PZ0Z0OPO Z0SQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1758

rZ0l0skZ ZpobmpZp 0Z0o0mpa o0ZPo0Z0 0ZPZPZ0Z ZPM0Z0Z0 PZ0MBOPO ZRAQZRJ0 a

c

rZbZqskZ o0onZpap 0o0ZnZpZ Z0Z0o0Z0 0OPZPZ0Z Z0M0ANZP PZ0ZBOPZ SQZRZ0J0 a

1755 8

b

1757

rZbZ0skZ opZnmpap 0l0o0ZpZ ZNZPo0Z0 0ZPZPZ0Z o0Z0Z0Z0 0Z0MBOPO ZRAQZRJ0 a

rZ0l0skZ Z0obZpa0 0o0o0Zpo o0mPo0Zn 0ZPZPZ0Z ZPM0APZ0 PZQMBZPO S0Z0S0J0 a

1754 8

Positional pawn sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblrZkZ opm0Zpap 0ZpZ0ZpZ Z0Z0o0Z0 0ZPZPZ0Z Z0M0APZP PO0Z0LPZ S0Z0SBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1759 8 7 6 5 4 3 2 1

1762

rZblrZkZ opZ0Zpap 0ZnZ0mpZ Z0ZpZ0Z0 0ZPM0Z0Z Z0M0APZ0 PO0LBZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1764

rZ0l0skZ opo0Znap 0Z0o0Z0Z Z0OPobo0 POBZNm0Z Z0M0Z0Z0 0Z0Z0OPO S0AQZRJ0 a

c

0s0l0skZ Z0Zbopap 0Zno0ZpZ Z0ZNZ0Z0 0oRZ0Z0Z ZPZ0ZNO0 PZ0LPOBO Z0ZRZ0J0 a

1761 8

b

1763

rZ0ZrZkZ l0Zna0Z0 0Z0o0ZpZ oPoPo0op PZ0ZPZ0Z ZNL0ZPZ0 0Z0ZBZPO Z0ZRZRZK a

rmbZ0skZ opZ0l0Zp 0Z0o0Z0Z Z0oPZ0o0 0ZPZPo0Z Z0M0Z0Z0 PO0LBSPO S0Z0Z0J0 a

1760 8

Positional pawn sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZrZkZ Zbl0Zpap 0Z0Z0ZpZ opZpM0ZP 0ZnO0Z0Z O0Z0ZPZ0 BO0ZRAPZ Z0ZQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1765 8 7 6 5 4 3 2 1

1768

rZ0Z0ZkZ ZpZqZpop 0ZbZnZ0Z o0ZpA0Z0 Pa0Z0Z0Z ZNMQZPO0 0OPZRZ0O Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1770

rZbZ0skZ opo0Zpap 0Z0Z0mpZ Z0Z0l0Z0 0Z0MpA0Z O0Z0Z0O0 0OPZPOBO ZRZQZRJ0 a

c

rZ0lrZkZ Zpm0Z0ap pZ0o0mpZ Z0oPZ0Z0 PZ0Z0Z0Z Z0MQZ0A0 0O0ZBOPO ZRZ0ZRJ0 a

1767 8

b

1769

rZbZ0skZ o0Z0a0op qZpZpo0Z Z0OpZ0Z0 0Z0O0A0Z O0ONZ0O0 0Z0Z0O0O S0ZQZRJ0 a

rZbl0skZ opo0Z0ap 0Zno0m0Z Z0Z0opo0 0ZPZ0Z0Z ZPMPO0O0 PA0ZNOBO S0ZQZRJ0 a

1766 8

Positional pawn sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lrZkZ ZpZnZpob pZ0o0a0o O0ZPZ0Z0 0OPZpZ0Z S0Z0ZPZP 0Z0M0ZPZ Z0AQSBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1771 8 7 6 5 4 3 2 1

1774

rZbl0skZ opZ0m0a0 0Z0Z0Z0o Z0Z0opo0 0ZPZpZ0Z ZBO0ZPZ0 PO0ZQZPO S0A0MRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1776

rZbZkZns ZpZ0Z0o0 pZ0opa0Z Z0Z0Z0Zp 0ZqMPZ0Z Z0M0AQZ0 POPZ0ZPO S0Z0ZRJ0 a

c

0Z0srZkZ o0Z0Zpo0 bZpZ0ZqZ Z0Zpa0Zp 0Z0Z0Z0O ZPZ0OBO0 PZ0LNO0Z Z0S0S0J0 a

1773 8

b

1775

rZrZ0ZkZ ZpZ0oblp 0Z0opapZ ZPZ0Z0Z0 0ZPZPO0Z Z0Z0A0Z0 0Z0LBZPO ZRZRZ0J0 a

rZ0ZkZ0s Z0ZbZpa0 qZpZpZpZ m0ZpO0A0 poPO0ZPO Z0ZQZ0Z0 PO0MNZ0Z ZKZRZ0ZR a

1772 8

Positional pawn sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZbZrskZ opl0Z0Zp 0ZpZ0ZpZ Z0Z0ZpZn 0ZPSpZnZ ZPM0Z0O0 PZNZPOBO Z0L0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1777 8 7 6 5 4 3 2 1

1780

rmblka0s o0ZpZpZp 0o0Z0mpZ Z0oPZ0Z0 0Z0Z0Z0Z O0Z0ZNZ0 0O0ZPOPO SNAQJBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1782

0Z0Z0Z0s obonjpZ0 0o0ops0Z Z0Z0Z0lp 0ZPOPSpM Z0OBZ0O0 PZ0Z0LPO Z0Z0ZRJ0 a

c

0s0ZkZ0s Z0lnapo0 pZbZpZ0Z Z0ZpO0Zp 0o0A0ZPO ZPZ0LPZ0 PMPZ0Z0Z ZKZRZBZR a

1779 8

b

1781

rZbl0s0j ZpZpZ0ap 0ZpZ0ZnZ o0Z0ZpoQ 0ZPO0Z0Z O0M0O0O0 0O0Z0ZBO ZRA0ZRJ0 a

rm0Z0skZ o0Zqopap 0o0Z0ZpZ Z0O0Z0Z0 0Z0Z0Z0A ZQO0ONZ0 PZ0ZKOPO S0Z0Z0ZR a

1778 8

Positional pawn sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ o0Znl0op 0o0ZpZ0Z Z0onZpO0 0Z0O0Z0Z O0ZQONZ0 0O0A0O0O ZKZRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1783 8 7 6 5 4 3 2 1

1786

rZ0Z0skZ ZpZbapop pZ0o0m0Z l0Z0o0Z0 0Z0SPOPZ ZBM0AQZ0 POPZ0Z0O Z0J0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1788

0Z0s0s0j Z0l0Zpop po0o0anZ Z0ZBZ0Z0 PZ0MPZ0Z Z0O0Z0L0 0O0Z0ZPO Z0ZRZRZK a

c

0Z0ZkZ0s Z0lnapop pZbopZ0Z O0o0Z0O0 Ns0ZPO0Z ZPZ0ABZ0 0ZPL0Z0O S0Z0ZRJ0 a

1785 8

b

1787

kZ0Z0s0s apZ0Z0o0 0Z0ZQZnZ Z0Z0Z0O0 PZ0o0O0Z l0Z0ZNJP 0Z0A0Z0Z Z0S0S0Z0 a

0Z0ZrskZ opZ0Z0op 0abZ0Z0Z Z0ZpZ0Z0 0Z0Z0ZnZ Z0ZBZNZ0 PO0Z0OPO S0A0ZRJ0 a

1784 8

Positional exchange sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0ZkZ ZqZ0Zpa0 0ZbopZpo opZ0Z0Z0 0ZrZPO0Z O0O0M0O0 0O0SQZBO Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1789 8 7 6 5 4 3 2 1

1792

rZ0lrZkZ o0Z0Zpap bo0o0Z0Z Z0oPm0Zp PZ0ZPZ0Z S0Z0Z0Z0 0OQM0OPO Z0ANZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1794

0s0s0ZkZ ZbZ0Zpop pZ0Zpm0Z Zpa0A0Z0 0Z0Z0Z0Z ZPZ0M0O0 PZPZ0OBO Z0S0S0J0 a

c

rZ0Z0skZ Z0lnapon pZ0MpZ0o ZpZbO0Z0 0Z0Z0Z0O ZNZ0Z0A0 POPZQZPZ ZKZRZBZR a

1791 8

b

1793

0Zks0Zns o0oqZ0op 0o0ZpZ0Z m0ZpOpZ0 0Z0O0M0Z Z0O0Z0L0 0ZPZ0OPO S0A0J0ZR a

rZ0Zra0Z obZ0ZpZk 0ZRZnlpo Z0O0o0Z0 0ZBZPm0Z O0M0ANZP 0ZQZ0OPJ Z0ZRZ0Z0 a

1790 8

Positional exchange sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opo0l0ap 0Z0o0ZpZ Z0ZPo0Z0 0mPZPZ0O ZQMnZBO0 PO0AKZ0M S0Z0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1795 8 7 6 5 4 3 2 1

1798

0ZbZrakZ o0Z0Z0Zp rlpZpZpZ ZnSpMpZ0 0O0O0A0Z O0Z0LBO0 0Z0ZPO0O S0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1800

rZ0ZkZ0s Zbl0Zpop pZpapm0Z Z0Z0S0Z0 0Z0Z0A0Z Z0M0Z0O0 POPZ0OBO S0ZQZ0J0 a

c

rZ0Z0Zkm oqZ0Z0Zp 0orApZpO Z0ZpOpZ0 PZ0Z0M0Z Z0ZPL0Z0 RZnZ0OPZ Z0Z0ZRJ0 a

1797 8

b

1799

0s0s0ZkZ Z0a0lpZp bZpZ0ZpZ o0o0o0Z0 0ZPZPZ0Z ZPM0APZ0 PZQZ0ZPO S0ZRZ0J0 a

0s0Z0skZ Z0lnopa0 bZ0o0Zpo o0oPZ0Z0 PZPZ0Z0Z Z0ZBZNO0 0ZQAPO0O ZRZ0ZRJ0 a

1796 8

Positional exchange sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0Z0s Z0Z0apjp pZ0o0ZpZ lpZ0o0On 0Z0ZQZ0S Z0ZBAPZ0 POPZ0Z0O ZKZRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1801 8 7 6 5 4 3 2 1

1804

rZbZ0skZ Z0Z0Zpop pZ0ZpZ0Z Z0o0l0Zn RZ0ZPZ0Z Z0MBZ0ZP 0OPZ0OPZ Z0Z0LRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1806

rZ0lka0s opZ0opZ0 0mpZ0Zpm Z0Z0Z0M0 0Z0O0ZbZ Z0Z0ZNZ0 POPZ0OPZ S0AQJBZR a

c

rZ0Z0ZkZ Z0mnZro0 qZ0ZpZbo ZpapO0Z0 pZ0M0ZPZ O0OPZNZ0 0Z0ZQOBZ ZRA0ZRJ0 a

1803 8

b

1805

0sblrZkZ Z0m0apZp ponZ0ZpZ Z0opS0O0 PZ0Z0O0L Z0MPZ0M0 0OPA0ZBO Z0Z0ZRJ0 a

0ZrZrakZ Z0lnZpop po0ZpZ0Z Z0Z0O0Z0 0ZPZ0ZnZ ZPM0ZRZ0 PA0ZQZPO ZBZRZ0ZK a

1802 8

Positional exchange sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opo0oqa0 0Z0o0Z0o Z0Z0Z0Z0 0ZPm0OpM APL0Z0O0 PZ0Z0OBO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1807 8 7 6 5 4 3 2 1

1810

rZ0l0skZ Z0Z0Z0Zp pZ0o0Z0Z mpoPm0Z0 0ZPZ0O0Z ZPZ0Z0Zb PL0MBZ0O S0ZNZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1812

0Z0ZrZ0Z Z0Z0Zpjp rm0o0mpl ZNoPZ0M0 0Z0ZPO0Z Z0Z0Z0Z0 PO0L0Z0O ZKZ0ZRZR a

c

0Z0lrakZ ZpZ0Zpo0 pZro0Z0Z Z0ZNo0Zp 0Z0ZPZbO ZPM0O0Z0 PO0L0Z0Z ZKZ0Z0SR a

1809 8

b

1811

rm0Z0skZ opZ0Zpop 0lpZ0m0Z Z0a0Z0Z0 0Z0M0ZbL Z0Z0A0M0 POPZ0OPO Z0JRZBZR a

rZ0Z0ZkZ Z0ZqmrZp pZ0a0o0Z ZpopZ0Z0 0Z0M0Z0Z ZBOQZ0Z0 PO0Z0OPO Z0Z0SRJ0 a

1808 8

Positional exchange sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0ZkZ o0l0Zpa0 0ZpMbZ0o o0OrZ0o0 0O0Z0o0Z O0Z0ZNZP 0ZQZROPZ Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1813 8 7 6 5 4 3 2 1

1816

rZ0Z0skZ ZblnapZp po0opmpA Z0Z0Z0Z0 0ZPZPZPZ Z0M0ZPZ0 PONZBL0O S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1818

0Zbl0skZ s0Z0Z0Zp 0Zpapm0Z o0ZpZ0o0 NZPO0o0Z ZPZPZ0O0 0A0Z0OBO S0ZQS0J0 a

c

0Zra0snj Z0ZbZ0Zn pZPo0ZqZ Z0Z0o0Z0 NA0ZPZ0Z Z0ZNZBo0 PZ0Z0ZKZ Z0AQZ0ZR a

1815 8

b

1817

0s0l0skZ o0onZ0o0 0ZnZpo0o Z0OpO0a0 NZ0Z0Z0Z OPL0ZBZP 0Z0Z0OPA S0Z0ZRJ0 a

0ZrZ0s0j o0Zbm0ap 0l0o0mpZ ZPZPopO0 0Z0Z0Z0Z ZQMNZPZP PO0ABZKZ S0Z0ZRZ0 a

1814 8

Positional exchange sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZnZrs0j opo0Zqa0 0ZnZbZ0o ZNZ0o0o0 0Z0ZPZ0Z ZPZ0LNAP PZ0ZBOPZ Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1819 8 7 6 5 4 3 2 1

1822

rZbZrZkZ Zpo0Zpa0 pZ0o0lnZ Z0OPZNop PORZPo0Z Z0Z0ZNZP 0ZQZBOPZ Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1824

rZ0lrZ0Z opZ0Zpak 0Z0ZnZpZ Z0APono0 0ZPZ0ZBZ Z0M0Z0O0 PO0L0Z0O S0Z0ZRJ0 a

c

rZbZ0s0j ZpZ0Z0Zp 0Z0o0Z0Z Z0ZBa0Aq 0OPZ0o0Z Z0Z0Z0Z0 0ZQZ0ZPO Z0Z0SRJ0 a

1821 8

b

1823

rZbl0skZ opo0m0Zp 0Z0o0mpZ Z0OPo0Z0 0ONaPo0Z A0M0ZPZ0 PZ0ZBZPO S0ZQZRZK a

rZ0ZrZ0j Z0oqZ0Zp 0o0oNZbA Z0ZPa0Z0 0OPZpZ0Z Z0ZnZ0S0 0Z0LBZPO Z0Z0ZRJ0 a

1820 8

Positional exchange sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ obZ0mpap 0Z0o0mpZ ZPZPo0Z0 0Z0Z0Z0Z ZNM0ZBZ0 PO0Z0OPO ZRAQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1825 8 7 6 5 4 3 2 1

1828

0Z0s0ZkZ opl0ZpZp 0ZpZbZpa Z0Z0Z0Z0 0O0ZPO0Z Z0ZrA0Z0 PZ0Z0MPO ZRL0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1830

rZ0Zqs0Z o0ZnZ0jp bo0Z0Z0Z Z0oPo0Z0 0ZPZ0o0Z ZPMNmRZ0 PZ0L0ZPO Z0ZBS0J0 a

c

rZbZrZkZ opZ0ZpZp 0Zpo0ZpZ Z0m0a0O0 0ZPZPA0Z Z0M0Z0O0 PO0Z0O0Z Z0ZRSBJ0 a

1827 8

b

1829

rZbZ0skZ opZ0Z0ap 0Zpo0ZpZ Z0Z0l0A0 0ZPZPZpZ Z0M0Z0Z0 PO0L0OPO S0Z0ZRJ0 a

rZ0Zns0j o0Z0Zqap 0o0o0mbZ Z0ZPo0S0 0Z0Z0Z0Z ZQM0A0Z0 PO0MBO0O Z0Z0Z0SK a

1826 8

Positional exchange sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opo0Z0a0 0Z0o0Z0o Z0mPobZ0 0ZPZ0ZpO Z0M0Z0O0 PO0MBZPZ S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1831 8 7 6 5 4 3 2 1

1834

rZ0lkZ0s ZbZ0Zpop pZ0o0a0Z Z0mNo0Z0 0S0ZPZ0Z Z0O0Z0Z0 0ONZ0OPO Z0ZQJBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1836

rZ0lrZkZ Z0Z0apop bZ0o0Z0Z o0oPOPO0 0onZ0Z0O Z0Z0Z0M0 PO0ZNZBZ Z0SQZRJ0 a

c

rZbZqskZ opo0Zpap 0Z0Z0ZpZ Z0ZNZ0A0 0Z0ZPZnZ Z0Z0ZQOP POPZ0ZBZ S0Z0J0ZR a

1833 8

b

1835

0Z0j0Zqs Zps0apZ0 0mnZpZpo obZpO0Z0 0Z0O0MQO O0Z0ZNZ0 BO0A0OPZ S0S0Z0J0 a

0s0Z0Z0j Z0ZQm0l0 0Z0o0Z0Z Z0Z0a0op 0Z0ZPo0Z Z0Z0ZPZP 0Z0SBAPZ Z0Z0Z0J0 a

1832 8

Positional exchange sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0arZ ZbZpZpZ0 0oqZpZ0Z Z0Z0O0Zp pZPZ0ZpO O0LRZ0A0 0O0Z0OPZ Z0ZRM0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1837 8 7 6 5 4 3 2 1

1840

0sbZrZkZ Z0lnZpap ponopZpZ Z0Z0Z0O0 PZ0MPO0Z Z0M0Z0ZQ 0OPZ0ZBO Z0ZRZRAK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1842

rZ0ZkZ0s ZbZqapop 0Z0o0Z0Z o0Z0oPO0 0o0ZnZ0Z Z0ZPANZQ PO0Z0Z0O J0MRZRZ0 a

c

0s0s0mkZ ZpZ0lnZp 0MpZbopa Z0O0o0Z0 0OBZPZ0Z ZQM0A0Z0 0Z0Z0OPO ZRZ0ZRJ0 a

1839 8

b

1841

0ZrlrZkZ opZbZpo0 0ZnZ0m0o Z0Z0Z0ZN 0Z0o0Z0Z O0O0Z0S0 BZ0Z0OPO S0AQZ0J0 a

rZ0ZrZkZ ZblnZpap po0opmpZ Z0Z0Z0Z0 0ZPMPO0Z ZPM0A0OP PZ0L0ZBZ Z0S0ZRJ0 a

1838 8

Positional piece sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ Z0s0lpap bo0Z0ZpZ Z0mpZ0Z0 0O0MnZ0Z Z0Z0ZNOB 0ZRZPO0O AQZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1843 8 7 6 5 4 3 2 1

1846

0m0s0ZkZ ZbZpZ0op pZrZpo0Z Zpl0Z0Z0 0Z0SPZ0Z O0M0Z0ZQ 0OPZBOPO Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1848

0Zbl0skZ Z0o0apop 0onZpm0Z Z0OpZ0Z0 QO0O0A0Z Z0M0O0Z0 0Z0Z0OPO Z0Z0JBMR a

c

rZbZ0skZ Z0lpapZp pZnZpo0Z ZpZ0m0Z0 0Z0ZPZ0Z ZNM0A0Z0 POPLBZPO Z0ZRZRJ0 a

1845 8

b

1847

rZ0l0skZ obZ0ZpZp 0o0ZpZpZ Z0Z0ZnaN 0ZPO0Z0Z O0ZQZ0Z0 0ABZ0OPO S0Z0S0J0 a

0sbl0skZ ZpZ0Zpap pZ0o0ZpZ Z0oPm0Zn PZ0ZPZPZ M0M0Z0ZP 0O0Z0OBZ S0AQZRJ0 a

1844 8

Positional piece sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lrakZ Z0Z0Z0Zn 0m0Z0Zpo Z0ZpOpZ0 bopO0O0Z Z0Z0Z0MB 0O0ZNAPO SQZ0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1849 8 7 6 5 4 3 2 1

1852

0Z0ZrskZ Z0ZbZ0ap 0l0o0ZpZ Z0oPm0Zn 0Z0ZBO0Z M0M0Z0OP 0O0AQZ0J S0Z0ZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1854

0s0s0ZkZ o0Z0lpap 0obMpZpZ m0o0ZPO0 PZ0ZBZ0Z Z0OPZ0L0 0O0Z0ZNO Z0Z0SRJ0 a

c

rZbl0ZkZ opZnZ0op 0Z0Z0Z0Z Z0o0O0Z0 0ZPoPZ0Z O0M0Z0Z0 0O0LBZPO Z0Z0ZRJ0 a

1851 8

b

1853

0Z0s0Z0Z Z0s0a0j0 0o0Z0ZpZ oBlPopZ0 PZ0ZPZ0M Z0Z0O0O0 0Z0ZQOKZ ZRZ0Z0Z0 a

rZ0l0skZ opo0apop 0Z0o0Z0Z Z0Z0Z0m0 0mPO0ObZ ZNZBZ0Z0 PO0L0ZPO SNZ0J0ZR a

1850 8

Positional piece sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0Z0Z Z0o0Zrjp pZnobopZ ZqoNZ0Z0 0Z0ZPZ0Z ONL0S0ZP 0OPZ0OPZ Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1855 8 7 6 5 4 3 2 1

1858

rZnZ0Z0j Z0o0Z0lp pZpZ0m0Z Z0OpZpZ0 PZBZ0Z0Z ZPM0Z0ZP 0Z0ZQO0Z Z0Z0SKZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1860

rmbs0ZkZ opo0opap 0l0Z0ZpZ Z0Z0O0Z0 0ZBZNZnZ Z0Z0ZNZ0 PO0A0OPO Z0SQJ0ZR a

c

rm0lrakZ Zbo0Zpop pZ0Z0m0Z ZpZ0o0A0 0Z0ZPZ0Z ZBO0ZNZP PO0M0OPZ S0ZQS0J0 a

1857 8

b

1859

rZ0ZrZkZ oplnapop 0ZpZ0m0Z Z0Z0ZNZ0 0ZPZ0Z0Z Z0A0ONZ0 POQZ0ZPO Z0JRZ0ZR a

rZblkZ0s o0Z0opap 0ZnZ0ZpZ ZpZ0Z0Z0 0ZBO0Z0A Z0Z0ONZ0 PZ0Z0OPO S0ZQJ0ZR a

1856 8

Positional piece sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sblrZkZ o0ZnZpZn 0Z0a0ZpZ ZpZ0Z0O0 0ZpOPZ0Z Z0M0ZPZ0 POQA0ZPZ ZKZRZBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1861 8 7 6 5 4 3 2 1

1864

0ZbsrZkZ opZ0apop 0l0ZpZnZ Z0Z0M0ZQ 0Z0ZBZ0Z ZPZ0Z0Z0 PAPZ0OPO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1866

0Zrl0ZkZ obs0apop 0o0ZpZ0Z m0Z0M0Z0 0Z0OnZ0Z O0M0A0ZP BORZQOPZ Z0S0Z0J0 a

c

rZ0lrakZ ZbZnZpZ0 po0opmpo Z0Z0Z0M0 PZ0O0Z0Z Z0O0Z0ZQ 0OBM0OPO S0A0S0J0 a

1863 8

b

1865

rZ0lnZkZ Z0Zbapo0 0o0ZpZ0o Z0opO0M0 0Z0m0A0O Z0ZPM0O0 0OPZ0OBZ Z0ZQS0J0 a

rZ0Zka0s opZ0mpop 0Z0Z0m0Z Z0oPZqM0 0Z0ZpZ0Z ZPM0O0O0 PA0O0O0O S0ZQZRJ0 a

1862 8

Positional piece sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rs0Z0ZkZ Z0l0apZ0 0Z0o0ZpZ mboPo0Zp 0Z0ZPmNZ Z0O0ZNZP 0ZBZ0OPZ S0AQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1867 8 7 6 5 4 3 2 1

1870

rZ0l0skZ opZnapop 0ZpZpZ0Z O0Z0M0Z0 0mBO0Z0Z ZQZ0O0Z0 0O0Z0OPO S0A0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1872

rZbZkZ0s opZnZpo0 0Zpl0m0o Z0Z0o0M0 0Z0O0Z0Z Z0ZBZ0Z0 POPLNOPO Z0JRZ0ZR a

c

rZ0ZkZ0s opZnapo0 0lpZpm0o Z0Z0Z0ZP 0Z0O0ZRZ Z0ZQZNM0 POPA0OPZ Z0JRZ0Z0 a

1869 8

b

1871

rZ0Zrj0Z Z0Z0opa0 0Z0o0mpo o0oPZ0M0 0lPZ0A0Z Z0Z0S0ZP PO0ZQOPZ Z0Z0S0J0 a

rZ0lrakZ Zbo0Zpop pZnZ0m0Z ZpZ0M0Z0 0O0OpZ0Z Z0O0Z0Z0 PZBM0OPO S0AQS0J0 a

1868 8

Positional piece sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0Zks opZqmpop 0apM0Z0Z Z0ZpOnZ0 PZ0O0Z0Z A0Z0ZNZ0 0Z0Z0OPO ZRZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1873 8 7 6 5 4 3 2 1

1876

rZba0skZ o0ZnZpop qZpZ0m0Z ZpZ0ZNZ0 0ZBL0Z0Z Z0Z0ZNZ0 POPA0OPO Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1878

rZ0s0ZkZ ZbZnZpap pl0opZpZ ZpZ0Z0O0 0Z0MPZ0Z ZPZ0Z0L0 PAPS0OBO Z0ZRZ0J0 a

c

0Z0lkZ0s o0ZbZ0op 0ZpZ0o0Z Z0S0o0Z0 QZ0o0Z0Z Z0ZPZNO0 Ps0ZPO0O S0Z0Z0J0 a

1875 8

b

1877

0ZrZrakZ Z0ZnZpZ0 pZ0oqmpZ ZpZ0o0Ap 0O0ZPZ0M ZPORZQMP 0Z0Z0OPZ Z0ZRZ0J0 a

0ZbZkZ0s o0ZqZ0op 0ZpZ0o0Z Z0S0o0Z0 QZ0m0Z0Z Z0ZPANO0 Ps0ZPO0O Z0Z0J0ZR a

1874 8

Positional piece sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrZkZ Zpl0Zpap 0Zpo0mpZ o0m0Z0Z0 0ZPMPO0Z OPM0Z0OP 0ZQZ0ABZ Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1879 8 7 6 5 4 3 2 1

1882

rZbZrZkZ ZpZnapZp 0l0o0ZpA o0Z0Z0Z0 Pm0MPZPZ Z0M0ZBZ0 0OPZ0Z0O S0ZQZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1884

0ZrZ0ZkZ opZ0Z0ap 0Z0o0ZpZ Z0ZPobZn 0lrZ0Z0Z Z0M0A0OP PO0ZQOBJ S0S0Z0Z0 a

c

rZbl0s0j Z0o0Z0a0 0o0Z0Z0Z Z0ZPZno0 0OPZNZPZ Z0Z0Z0Z0 0ZQZ0Z0O ZRA0ZRZK a

1881 8

b

1883

0sbZ0ZkZ s0Z0Z0mp pZ0l0opL Z0oPo0Z0 0ZBZPZ0M Z0Z0Z0S0 0Z0Z0OPO Z0S0Z0J0 a

rZ0l0s0j Zpo0Z0ap 0Z0o0ZpZ Z0OPo0Zn 0ONZPZbZ Z0M0A0O0 0ZQZ0Z0O ZRZ0S0J0 a

1880 8

Positional piece sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opZ0l0ap 0Zpo0ZpZ Z0m0ZpZn 0OPMPZ0Z Z0M0ZPZ0 PZQZ0ZPO ZRARZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1885 8 7 6 5 4 3 2 1

1888

rmrZ0ZkZ opZ0lna0 0Z0o0o0Z Z0oPo0o0 0ZPZPZ0A Z0M0Z0ZP PO0Z0O0Z S0ZQJNZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1890

rZ0l0ZkZ ZbZnZpop pZ0o0a0Z ZpZ0ZNZ0 0Z0ArZ0Z ZBZ0Z0ZP PO0Z0OPZ Z0SQS0J0 a

c

rZbZ0s0j Z0Z0lpZp pZ0opa0L Z0Z0mPZ0 0o0MPZ0Z Z0M0Z0Z0 POPZ0Z0O Z0JRZBS0 a

1887 8

b

1889

0sbl0ZkZ opZ0Z0Z0 nZ0s0m0o Z0oNZpo0 PZPa0Z0Z Z0Z0ZBZN 0O0ZQZPO S0A0ZRZK a

rZbZ0s0j opl0Z0m0 0ZpZna0Z Z0O0o0op 0OBZPo0Z O0M0ZNZP 0AQZ0OPZ Z0ZRS0J0 a

1886 8

Positional piece sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZkZrZ0s opZbZpa0 0ZpZ0Z0Z Z0OPZqZp 0Z0ZpOpZ Z0M0A0O0 PO0Z0Z0O Z0SQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1891 8 7 6 5 4 3 2 1

1894

rmbl0skZ opZ0Zpo0 0Z0Zpa0o Z0O0Z0Z0 0ZPo0Z0Z Z0M0ONZ0 POQZ0OPO Z0JRZBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1896

rZbl0skZ ZpZ0Zpap pZ0Z0ZpZ ZBZNZ0On PL0Z0O0O Z0Z0Z0Z0 0OPZ0Z0Z Z0JRZ0MR a

c

0Z0Zrs0j Z0oqm0ap 0oNo0Z0Z ZPZbZpo0 0Z0M0Z0Z ZQZ0ORO0 0A0Z0ZBO S0Z0Z0J0 a

1893 8

b

1895

0ZrZrZkZ ZbZ0Zpa0 po0o0Zpo Z0l0Z0Z0 PZ0SPZnZ ZNM0Z0O0 0OPZ0OBO Z0ZRZQJ0 a

rZ0l0Z0Z ZpZ0apj0 pZbo0m0Z O0A0oPZr 0m0ZPZpZ ZNM0Z0Z0 0OPS0ZBO S0ZQZ0J0 a

1892 8

Positional queen sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ Z0Z0spZp 0opZ0ZpZ o0ZpZnl0 0Z0O0ZPZ ZPZ0OPZ0 PZ0Z0LNO Z0Z0SRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1897 8 7 6 5 4 3 2 1

1900

0Z0ZrZ0Z ZpZ0s0ak 0ZpZ0Zpo ZnO0ZqZn pO0Z0O0Z O0ZRA0Z0 0Z0LNSBO Z0Z0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1902

0ZrZ0skZ o0ZnZpop 0lRZpZ0Z Z0Z0M0Z0 0o0ZPZ0Z Z0ZBZ0Z0 PO0ZQaPO Z0ZRZKZ0 a

c

rZ0l0skZ obZ0ZpZ0 0o0Z0apZ Z0ZpZ0Z0 0m0O0Z0Z Z0MBZNZ0 POQZ0O0Z ZKZRZ0ZR a

1899 8

b

1901

rZ0l0skZ Z0o0Zpop pZno0m0Z ZpZNZ0A0 0Z0aPZbZ ZBZ0ZNZ0 PO0Z0OPO S0ZQZRJ0 a

0s0lkZns Z0Z0opap 0Z0Z0ZpZ opo0m0Z0 0Z0Z0AbZ Z0MPZNO0 POPZ0ZBO S0ZQZRJ0 a

1898 8

Positional queen sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opo0Zpop 0ZnZbZ0Z Z0ZnZ0Z0 0Z0Z0Z0a Z0M0AQZ0 POPZ0OPO Z0JRZBMR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1903 8 7 6 5 4 3 2 1

1906

rZ0Z0skZ o0Z0Zpap bopo0mpZ l0Z0m0Z0 0Z0MPO0A ZBM0Z0Z0 POPZQZPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1908

rZ0Z0ZkZ ZbZ0Zpop 0Z0orZ0Z Z0o0Z0ZQ pZPZ0Z0Z ZPZRA0Z0 PZqS0OPO Z0Z0Z0J0 a

c

0Z0s0mkZ obZrZpo0 0Z0Z0Z0Z Z0oNS0Op 0ZPZ0Z0O O0ZpSqZ0 BZ0L0Z0J Z0Z0Z0Z0 a

1905 8

b

1907

rZbs0mkZ opl0apop 0Z0Z0m0Z Z0ZpZ0Z0 0Z0Z0Z0A ZNM0O0Z0 POQZBOPO Z0ZRZRJ0 a

rZ0Z0ZkZ opZba0op 0l0ZpZ0Z Z0ZrZ0Z0 0Z0oRA0Z OQZ0Z0O0 0OPZ0O0O Z0Z0SNJ0 a

1904 8

Positional queen sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZrZkZ ZbZ0Zpop pZ0l0Z0Z ZpZPZ0Z0 0Z0ZnZ0Z Z0Z0ZPZ0 POQSBAPO Z0ZRZ0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1909 8 7 6 5 4 3 2 1

1912

rZblkZ0s opo0Zpm0 0Z0o0m0Z Z0aNo0A0 0Z0ZPZ0Z Z0ZPZ0Z0 POPZ0OBO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1914

0Zks0Z0s opZnapop 0lpZpZbZ Z0ZnZ0Z0 PZBO0Z0M Z0L0O0O0 NO0Z0O0O S0A0ZRJ0 a

c

0ZrZkZ0s Z0onZpo0 0o0Z0m0o o0Z0OPZ0 0Z0ZqZ0A O0O0Z0Z0 0ZQZNZPO S0Z0ZRJ0 a

1911 8

b

1913

qZ0Z0ZkZ Z0Z0s0ap 0o0O0opZ o0MbZ0Z0 PZpZ0Z0O Z0Z0ZQZ0 0O0A0OPZ Z0ZRZ0J0 a

rZqs0ZkZ opo0Zpap 0ZnZbZpZ ZBOPo0Z0 0Z0Z0Z0Z Z0Z0ANZP PO0Z0OPZ S0ZQZRJ0 a

1910 8

Positional queen sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0jrZ0Z0Z Zbs0Zpop pl0o0Z0a Z0ZPoPZ0 pS0Z0Z0O ZNO0ZQO0 0O0Z0Z0Z ZKZRZBZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1915 8 7 6 5 4 3 2 1

1918

rZqZ0ZkZ s0Z0opap 0m0o0mpZ OBoPZ0Z0 0Z0ZPZ0Z LRZ0Z0Z0 0O0M0OPO Z0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1920

rZbZkZ0Z Z0Z0opZ0 0Z0o0Z0Z o0oPZ0Z0 0l0Z0SnZ Z0M0Z0O0 POQZPZrZ Z0S0Z0ZK a

c

rZbZ0s0j Z0o0Z0ap 0o0m0m0Z Z0ZPM0Z0 0ZPZ0Z0Z M0ZQZ0Oq 0Z0ZBZ0S ZRA0Z0J0 a

1917 8

b

1919

0ZkZ0a0s obZrZpZ0 0Z0Z0O0Z ZqmpZ0Z0 NopZ0ZQZ Z0Z0A0O0 0O0Z0OBO S0Z0ZRJ0 a

0Zrl0a0Z Z0ZnZnj0 0oQo0Z0Z ZPZPo0op 0ZNZPo0Z Z0ZNZPZP 0Z0ZBZPZ Z0Z0S0J0 a

1916 8

Positional queen sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrakZ ZpZ0ZpZp 0Z0obZpZ ZNmpm0Z0 plPZPZ0Z Z0Z0ZPZ0 PO0A0ZPO Z0LRSBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1921 8 7 6 5 4 3 2 1

1924

rm0s0ZkZ o0Z0Z0a0 0ZpZbopZ Z0ZPo0Zp 0l0ZPZnA ZNM0Z0Z0 PZ0ZBOPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1926

rs0Z0ZkZ Z0Z0opap 0Z0o0mpZ Z0oPZ0Z0 0mqZPA0Z ZPM0ZNZP PZ0S0OPZ S0ZQZ0J0 a

c

0Zks0Z0s opZ0mpop 0ZnZbZ0Z Z0ZPZqZ0 0Z0Z0Z0Z A0O0ZBZ0 PZ0Z0OPO S0ZQS0J0 a

1923 8

b

1925

rZ0ZqZkZ Zpo0Z0an 0Z0o0Zpo o0mPZ0Z0 0ZPZ0sBA OPM0Z0Z0 0Z0Z0O0O Z0SQS0J0 a

0Z0Z0ZkZ M0obZ0Zp 0o0m0a0Z o0oPo0Z0 0ZPZPo0O O0Z0ZqZ0 0O0Z0OBZ Z0J0L0ZR a

1922 8

Positional queen sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0ZkZ Z0sbapo0 0ZqZpZ0o ZpZpO0Z0 nO0A0Z0Z Z0Z0LNZ0 PZBZ0OPO ZRS0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1927 8 7 6 5 4 3 2 1

1930

rsbl0ZkZ Z0Znapop 0ZQo0Z0Z M0ZPo0Z0 0oBZ0Z0Z Z0Z0A0Z0 0OPZ0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1932

0ZrZrZkZ ZblnZpap pZ0Z0mpZ O0Z0o0Z0 0ABZPZ0Z ZNZ0ZNZ0 0O0Z0ZPO Z0S0LRZK a

c

0ZrlrZkZ Z0Z0Zpap pZ0Z0ZpZ Z0Z0Z0Z0 0Z0ZbZ0Z L0ApO0Z0 PO0ZBOPO Z0SRZ0J0 a

1929 8

b

1931

rZ0lka0s opZnZpop 0Z0o0Z0Z ZBZPm0Zb 0Z0Z0Z0Z Z0M0ANZP PO0Z0OPZ S0ZQJ0ZR a

rZbZ0skZ ZpZnopap nZpo0ZpZ o0M0Z0Z0 Pl0OPZ0Z ZRM0APZ0 0O0Z0LPO Z0Z0JBZR a

1928 8

Positional queen sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0skZ ZbZnapop pZ0opZ0Z lpZ0ZPO0 0Z0ZPZ0Z O0M0ABZ0 0OPZ0L0O S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1933 8 7 6 5 4 3 2 1

1936

rZ0ZrZkZ onZ0Z0ap 0onZplpZ Z0ZpZ0M0 0O0Z0Z0Z Z0O0A0O0 0O0Z0OBO S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1938

qZ0Zrs0j Z0Z0L0Z0 po0o0Z0o Z0oPaPo0 PZ0Z0Z0Z Z0O0S0ZP BO0Z0OPZ Z0ZRZ0J0 a

c

0Z0ZrZkZ opl0Zpop 0ZPZ0Z0Z Z0Z0s0mb PZpZ0Z0M A0O0Z0O0 0ZBZ0Z0O ZRZ0LRJ0 a

1935 8

b

1937

rZbl0s0j ZpZ0Zpap pZ0o0ZpZ Z0ZNm0ON 0ZPZ0Z0Z ZPZ0ZQZ0 PZ0A0ZBO Z0S0ZRZK a

rm0Z0skZ Z0Z0opap 0Z0o0mpZ OpoPZ0Z0 0l0ZPO0Z S0MQZ0Z0 0O0A0ZPO Z0Z0J0MR a

1934 8

Positional queen sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0l0skZ o0ZpZ0mp QonOpZpZ Z0ZrOpZ0 0Z0Z0O0Z O0Z0ANZ0 0Z0Z0ZPO S0S0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1939 8 7 6 5 4 3 2 1

1942

rZ0Zka0s opo0ZpZp 0ZnZ0Z0Z ZBZpO0o0 0Z0Onobl Z0O0ZQZ0 PO0M0ZPO S0A0ZKMR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1944

0Z0ZrZ0l o0Z0Znj0 0Z0o0ZbZ ZpZPo0Z0 0ZpZ0ZPZ Z0O0Z0ZB PO0LNl0Z J0Z0ZRZR a

c

rZ0l0s0j opo0Z0op 0Zna0Z0Z Z0Z0ZbA0 0ZBORZ0Z Z0Z0ZNZ0 PO0Z0OPO S0ZQZ0J0 a

1941 8

b

1943

0Z0ZrZkZ Z0ZnZpap pZ0o0mpZ spZPZ0Z0 0ZqZPO0Z ZRM0Z0A0 0OQZBZPO Z0Z0S0ZK a

bZrZra0j Z0lRZpop po0Z0A0Z Z0Z0oPZ0 Pm0ZpZ0Z Z0M0Z0L0 0OPZNZPO Z0ZRZ0ZK a

1940 8

Positional queen sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0s0j Z0Z0l0op 0ZpZ0Z0Z ZpO0ZpZ0 rLBZpZ0Z Z0Z0O0Z0 PZ0Z0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1945 8 7 6 5 4 3 2 1

1948

0Z0ZnZ0Z Z0ZbskZp qo0o0ZpZ Z0oPZpLn PZPZ0Z0Z Z0A0ZNZP 0Z0Z0OPZ ZRZ0ZBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1950

0s0Z0s0j Z0ZqZ0ap 0ZnobZ0Z o0ZNZpZQ 0Z0ZpO0Z Z0O0M0OB PZ0Z0Z0O Z0ZRZRZK a

c

0Zrs0ZkZ Zbl0Zpop pZ0ZpZ0Z Z0m0o0ZN Pm0ZPZ0Z ZPZ0Z0O0 0Z0ZQOBO ZNSRZ0J0 a

1947 8

b

1949

rZ0Z0skZ ZpZbZ0mp pZ0o0lpZ ZPoPZpZ0 0ZPZ0Z0Z Z0ZBZNZP 0O0LROPZ S0Z0Z0J0 a

0Z0Z0ZkZ Z0M0Zpap 0Z0obZpZ SpZ0s0l0 0Z0ZPo0Z Z0OBZ0Z0 0O0ZQOPO Z0Z0Z0ZK a

1946 8

Penetration

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZkZbs0Z opZ0l0Zp 0ZnZpo0L Z0Z0ZpZ0 0O0Z0ZrZ Z0O0ZNZ0 PZ0S0OPO Z0ZRZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1951 8 7 6 5 4 3 2 1

1954

0Z0ZkZ0Z Z0mnZpZ0 0ZqZpZpZ o0ZpO0Mp PZpO0M0O LrO0S0O0 0Z0Z0O0Z Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1956

0ZrZ0skZ Z0ZbZpo0 0m0ZpZ0o o0ZpO0ZP 0aqO0Z0Z ZRM0ZNZ0 0O0Z0OPZ SBZQZ0J0 a

c

rZ0Z0Z0Z o0o0jpo0 0obZpZ0o Z0Z0ZqZ0 0ZPZ0O0Z Z0Z0L0O0 PO0Z0Z0O Z0JRZRZ0 a

1953 8

b

1955

0s0Z0m0Z oqZkZ0Z0 0Z0ZpZpZ Z0ZpOpZp 0o0O0Z0O Z0Z0Z0ZN PORZ0OPJ Z0L0Z0Z0 a

rZbl0skZ Z0ZnZ0op pZ0ZpZ0Z Z0Zpo0Z0 NL0Z0O0O Z0Z0Z0ZR POPZ0ZPZ Z0JRZBZ0 a

1952 8

Penetration

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZrZ ZpZnjpZ0 0ZbZpZpZ o0ZpO0Zp PZ0M0O0O ZPS0Z0ZR 0JPZBZPZ Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1957 8 7 6 5 4 3 2 1

1960

0Z0Z0Z0s opZbj0Z0 0Z0ZpZ0Z Z0ZpOps0 0O0M0Z0o Z0ZPJ0Z0 PZ0Z0SPO Z0Z0ZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1962

0lrZ0akZ ZbZnopZp 0o0o0mpZ ZNZPZ0Z0 0Z0Z0Z0Z Z0M0A0ZP 0OPLBOPZ S0Z0Z0J0 a

c

rZ0ZkZ0s o0Z0a0o0 0ZpZ0ZpZ Z0ZpZpZn 0Z0O0Z0Z Z0M0Z0Z0 PO0A0OPO Z0S0S0J0 a

1959 8

b

1961

rZ0Z0j0Z Z0Zqapo0 pZbZpZ0s Z0OpZPZp 0Z0A0Z0Z Z0M0Z0ZQ PZPZ0ZPO ZRZ0S0J0 a

0Z0Z0Z0Z spZnZ0jp 0ZbZ0opZ Z0lNo0Z0 0ZPZPZ0Z Z0Z0ZPZP 0L0Z0ZPJ Z0ZRZBZ0 a

1958 8

Penetration

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZkZ0s Z0Z0m0Zp pZ0Zpm0Z ZpZpZ0Z0 0Z0O0Z0Z O0O0ZNZ0 0Z0AKOPZ ZRZ0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1963 8 7 6 5 4 3 2 1

1966

rZbl0skZ Zponm0ap pZ0o0Z0Z ZNZPo0o0 0ZPZPo0Z Z0Z0ZPZ0 PO0ZBAPO S0ZQMRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1968

0sbj0Z0s o0Zqapop 0Z0o0mnZ ZNoPo0Z0 QZPZPZ0Z Z0Z0ANZ0 PZ0ZBOPO S0Z0ZRJ0 a

c

rZ0Zka0s oplbZpop 0Z0Zpm0Z Z0ZpZ0Z0 0m0O0O0Z O0Z0ONZ0 0O0M0ZPO SBAQJ0ZR a

1965 8

b

1967

0sba0s0j Z0Z0ZqZp pZ0o0Z0Z O0oPonZ0 0ZPZBZ0Z Z0Z0A0ZP 0Z0MQORZ S0Z0Z0J0 a

rZblnZ0Z opo0mrak 0Z0o0Zpo Z0ZPZ0Z0 0ZPZNA0Z Z0ZNZ0O0 PO0L0ZBO S0Z0ZRJ0 a

1964 8

Penetration

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0s0j lpZ0Z0Zp 0mpo0ZpZ oPZ0ZnZ0 PZ0O0Z0Z ZQZ0ZNZP 0Z0ZROPZ Z0Z0SNJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1969 8 7 6 5 4 3 2 1

1972

0Zbs0s0j o0Z0Z0o0 0o0l0a0o m0o0ZpZ0 PZ0O0Z0O Z0O0ZNZ0 BZQZROPZ Z0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1974

0Z0ZrakZ o0Z0ZpZ0 0ZpZ0o0o l0Z0mQZ0 0Z0A0Z0Z Z0Z0Z0O0 PZ0ZrOBO Z0ZRZRJ0 a

c

0Z0ZkZ0Z Z0o0mpZr popZ0apZ Z0Z0M0Zp 0Z0ZPO0Z Z0O0A0ZP PO0Z0O0Z Z0ZRZ0J0 a

1971 8

b

1973

kZ0ZrZ0s opZnZ0Zp 0Zpl0ZpA Z0Zpa0Z0 0Z0Z0Z0O Z0O0ZQO0 POBZROKZ Z0Z0S0Z0 a

0ZqZ0s0j Z0Zbmpo0 0o0ZpZ0o o0ZpO0ZP 0Z0O0Z0Z Z0ZBZNS0 PO0L0OPZ Z0Z0J0Z0 a

1970 8

Penetration

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZkZ0Z0s Z0orZpo0 0onZ0a0Z o0o0oPAp PZNZPZ0Z Z0OPZ0ZP 0O0ZKO0Z S0Z0Z0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1975 8 7 6 5 4 3 2 1

1978

0Z0S0Z0Z opZ0skm0 0ZpZ0lpZ Z0O0o0Zp 0O0ZPZ0Z Z0Z0L0O0 PZ0A0OKZ Z0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1980

0ZrZnskZ o0Z0Z0op 0o0Zqo0Z m0o0o0Z0 QZ0ZPZ0Z O0O0A0Z0 0Z0ZBOPO ZRZRZ0J0 a

c

0Zbl0skZ Z0Z0ZnZp Bo0Z0ZpZ Z0Z0ZpZ0 PZ0spZ0Z ZPZ0Z0ZP 0Z0ZQOPM S0Z0S0J0 a

1977 8

b

1979

0ZrlnskZ ZpZbapop 0Z0o0Z0Z O0ZPo0Z0 0ZnZPZ0Z ZNM0Z0LP 0Z0ZBOPZ S0A0ZRJ0 a

rZbZ0skZ Z0Z0l0Zp pZ0ZpopZ Zpm0M0Z0 0Z0S0Z0Z Z0Z0L0Z0 POPZBOPO Z0JRZ0Z0 a

1976 8

Penetration

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0Z0Z ZpZ0Z0Z0 0Z0ObZka ZPmNopZ0 0ZPZ0Z0o Z0Z0Z0ZP 0Z0ZNZ0Z ARZQJ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1981 8 7 6 5 4 3 2 1

1984

0Z0s0ZkZ ZbZ0Zpop pZ0Z0Z0Z Zpl0O0Z0 0ZrM0O0Z O0O0S0L0 0Z0Z0ZPO S0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1986

0arl0ZkZ ZpZ0Zpop pZnZ0m0Z Z0Z0o0Z0 0ONZPZ0Z O0ZrZNZ0 QA0Z0OPO S0Z0S0J0 a

c

0Zrlka0Z Z0Z0ZpZQ pZPo0Z0Z ZpZ0Z0s0 0Z0Z0Z0Z M0OpZ0O0 PO0Z0O0O S0Z0J0ZR a

1983 8

b

1985

0Z0s0skZ opo0Z0op 0Z0ZbZ0Z l0Z0O0Z0 0Z0Z0Z0Z Z0OPS0Z0 PZ0L0Z0O J0Z0ZBS0 a

0Z0lrZkZ Z0ZnZpap 0Z0o0ZpZ ZpZPZ0Z0 0ZpZPOPZ ZrZ0ABZP 0O0ZRLKZ S0Z0Z0Z0 a

1982 8

Penetration

c

d

e

f

g

h

8 7 6 5 4 3 2 1

bs0l0skZ Z0Z0opap 0Z0o0mpZ ZpZNm0Z0 0Z0MPZ0Z ZPZ0Z0OP RZPZ0OBZ Z0AQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1987 8 7 6 5 4 3 2 1

1990

rZ0l0s0Z Z0Znmpak bZpZpZpo opZpZ0Z0 0Z0OPA0Z OBM0ZQZ0 0OPZNOPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1992

0Z0ZrZ0Z obZ0Zpjp 0o0m0lpZ Z0ZPM0Z0 0L0Z0Z0Z ZBZ0Z0ZP PZ0Z0OPZ Z0Z0S0J0 a

c

0s0aqZkZ Z0Z0Zpop 0Z0o0ZbZ Z0oPZBO0 PsNZPS0Z ZPZ0Z0S0 0ZQZ0O0Z Z0J0Z0Z0 a

1989 8

b

1991

rZ0l0Zks opo0ZpZ0 0Z0o0Opm Z0Z0ZnAp 0Z0Z0Z0O Z0L0ZPZ0 POPZ0O0Z Z0J0SBZR a

0s0s0Z0Z lbZ0j0m0 0o0o0o0Z o0oPo0o0 0ZPZPZNo ZRO0ZPZ0 PS0Z0APO Z0L0Z0J0 a

1988 8

Penetration

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s o0Z0mpop bo0ZpZ0Z Z0ZpO0Z0 qZ0Z0Z0Z O0ZBZQZ0 0ZPA0OPO SRZ0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1993 8 7 6 5 4 3 2 1

1996

rZ0s0ZkZ opZ0Zpo0 0Zplbm0o Z0Z0S0Z0 0O0O0Z0Z O0ZqZ0M0 0Z0Z0OPO ZBZ0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

1998

0Z0Z0Zns opZkmrZ0 qZ0ZpZ0o O0ApOpoN 0ZpO0Z0Z Z0O0Z0Z0 0ZPZQOPO SRZ0Z0J0 a

c

rZ0lrakZ ZbZ0ZpZn 0m0o0Zpo o0ZPo0Z0 Po0ZPZ0Z ZPZ0ANMP 0ZBZQOPZ S0Z0S0J0 a

1995 8

b

1997

0jrZba0s ZpZ0mpZ0 0Z0ZpZpo oPZpO0ZP PZ0M0L0Z Z0OqA0Z0 0Z0M0OPZ S0S0Z0J0 a

0Zks0a0s opo0Z0Zp 0ZnZ0o0Z Z0ZqZ0o0 0ZNO0Z0Z ZQZ0Z0A0 PO0Z0OPO Z0S0S0J0 a

1994 8

Penetration

c

d

e

f

g

h

8 7 6 5 4 3 2 1

kZ0s0a0s opZ0Zpo0 qmpZpm0o Z0Z0Z0ZP 0ZPONZPZ Z0Z0ZNZ0 PO0AQO0Z ZKSRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

1999 8 7 6 5 4 3 2 1

2002

rZ0Z0skZ Z0ZnZ0op 0l0Z0Z0Z opo0mbA0 0Z0Z0Z0Z Z0Z0Z0ZP PO0M0OPZ ZBSQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2004

0Z0Z0skZ Z0onZ0a0 0ZNo0Zpo o0ZPo0Zq 0ZPZPmbZ O0Z0A0Z0 0ZQM0ZPO Z0Z0SBZK a

c

rZbl0s0j opZ0ZnZp 0Z0o0Zpa Z0ZPopZn 0O0ZPZ0Z ONMQZPO0 0ZRZBA0O Z0Z0J0ZR a

2001 8

b

2003

0Z0ZrskZ ZpZ0Zpa0 pZ0o0mpo l0o0Z0Z0 0ZPmPO0A Z0M0Z0ZP PO0Z0LPZ ZBZ0SRZK a

rZbl0s0Z opZnZnj0 0ZpZ0Zpa Z0O0opZp 0O0ZPZ0Z ZQM0Z0A0 PZ0MBOPO Z0ZRZRJ0 a

2000 8

Activation of pieces

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ opo0m0ap 0Z0o0o0m Z0ZPo0o0 0ZPZPZ0Z Z0M0Z0AP PO0MBOPZ S0ZQJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2005 8 7 6 5 4 3 2 1

2008

rZbl0skZ o0Z0ZnZp 0Z0o0mpa Z0oPopZ0 0ZPZPZ0Z ONM0ZPZ0 0Z0ZBAPO ZRZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2010

rZ0ZrZkZ ZbZ0Zpap plpZ0ZpZ ZpZ0o0Z0 PO0ZPm0Z Z0O0Z0ZP 0AQM0OPZ S0Z0SBJ0 a

c

0sbZrmkZ Z0l0apZp po0opZpZ Z0Z0Z0O0 Pm0ZPO0Z Z0M0A0ZR 0OPZ0ZBO S0MQZ0ZK a

2007 8

b

2009

0ZkZ0Zrs ZplbZpo0 pZ0Zpm0Z Z0Z0a0Ap 0Z0M0Z0Z ZBO0ZQZP PO0Z0OPZ Z0ZRS0ZK a

rZ0lka0s Z0ZnZpo0 0Z0ZbZ0o ZBm0o0Z0 po0oPZPO Z0Z0ZPM0 POPMQA0Z S0Z0J0S0 a

2006 8

Activation of pieces

c

d

e

f

g

h

8 7 6 5 4 3 2 1

bZ0m0lkZ Z0Zrapo0 pZ0ZpZ0Z ZpZ0O0Z0 0Z0Z0ZRO O0M0Z0Z0 0OPZQZPZ Z0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2011 8 7 6 5 4 3 2 1

2014

0Zrs0ZkZ lbZnapop pZ0opZ0Z ZpZ0M0Z0 0Z0ZPZ0Z OPZ0Z0OP 0APZ0OBZ ZNSQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2016

0Z0Z0s0j Z0l0Z0Zp pZ0mBZpZ Z0Z0a0Z0 0Z0Z0Z0L O0Z0A0Z0 0OPZ0Z0O S0Z0Z0J0 a

c

0Z0Zrs0j Zpl0Z0o0 pZbZpm0o Z0Z0ZpZ0 0Z0S0Z0O ZBO0Z0O0 PO0ZQO0Z Z0ARZ0J0 a

2013 8

b

2015

rZqs0ZkZ ZpZ0apo0 pZnZ0m0Z Z0Z0oPZp 0ZPo0Z0Z OPZQZ0OP 0A0ZNOBZ S0Z0ZRZK a

0Z0Z0skZ ZbZns0Zp 0Z0o0ZpZ o0lPZpZP Po0S0L0Z ZBZ0Z0M0 0OPZ0ZPZ Z0J0Z0ZR a

2012 8

Activation of pieces

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0s0Z0j o0lnZpo0 0Z0ZpZ0o Zbo0O0ZP 0ZpZBL0Z Z0Z0ZNZ0 PO0Z0OPZ Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2017 8 7 6 5 4 3 2 1

2020

rZbZ0s0j opZna0Zp 0lnZpZ0Z Z0ZpO0o0 0Z0O0ZBZ Z0Z0ANO0 PO0Z0J0O Z0SQZ0MR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2022

0Z0arskZ ZbZqZ0Zp pZnZpo0Z Z0Z0Z0ZQ 0oNo0O0M ZPZPZ0A0 PZ0Z0ZPO Z0Z0SRJ0 a

c

0Z0srZkZ Z0Z0Zpo0 pZnZ0Z0Z ZpZnoqZp 0Z0Z0Z0Z Z0OPZPOb PS0LNA0O Z0ZRZ0JB a

2019 8

b

2021

0ZnZqj0s mpZ0apo0 0Z0ZpZ0o ZbZpO0ZP pO0O0Z0Z O0ZBZ0Z0 0A0MQOPZ Z0Z0MRJ0 a

0s0ZrZkZ Z0ZnZpap 0Z0obZpZ l0o0Z0Z0 No0ZPZnZ ZPZ0ZPZ0 PZNLBZPO Z0SRA0J0 a

2018 8

Activation of pieces

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ Z0ZnZpo0 0oplpZ0o o0Z0Z0Z0 0ZPORZ0Z ZPA0Z0O0 PZ0Z0O0O Z0LRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2023 8 7 6 5 4 3 2 1

2026

0Z0Z0Z0Z o0ZQZ0o0 0j0Z0lbo Zpm0Z0Z0 0ZpZ0Z0O Z0O0ZPZ0 0Z0Z0APJ Z0Z0ZBZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2028

rZ0l0j0s ZpZbapZ0 pmnZpZpZ Z0ZpO0Zp 0Z0O0O0Z O0ZBZNZ0 0O0ANZPO SQZ0ZRJ0 a

c

0Z0s0ZkZ l0Z0Zpop pZ0Z0Z0Z Z0Z0O0Z0 0opO0S0Z ZnO0Z0ZP 0L0Z0ZPZ ZBZ0Z0J0 a

2025 8

b

2027

rZ0ZnZ0j Z0oqZ0Zp pZ0Z0snZ ZpSPo0o0 0Z0ZPo0Z Z0ZQZPZP PO0ZNAPZ Z0S0Z0J0 a

0Z0s0skZ opl0Zpo0 0ZnZ0m0o Z0o0Z0Z0 0Z0OpZPZ O0O0O0Z0 BZ0Z0OPZ ZRAQZRJ0 a

2024 8

Activation of pieces

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lrZ0Z opZ0a0ok 0ZnZpZ0o Z0Z0m0ZQ 0Z0oNA0O Z0Z0Z0O0 PO0Z0OBZ Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2029 8 7 6 5 4 3 2 1

2032

rZ0s0mkZ Zplnapop 0ZpZpZbZ o0Z0Z0Z0 0ZPO0Z0Z OPA0MBZ0 0Z0M0OPO S0LRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2034

0ZrZkZ0s Z0l0Zpop pZbZpZ0Z mpZ0Z0Z0 0a0ZPZ0Z Z0M0A0Z0 POPZBLPO Z0ZRZRZK a

c

rZblrZkZ opZ0ZpZp 0Z0Z0ZpZ Z0oPZ0Z0 0Z0aPO0Z ZRZ0A0Z0 PZQZBZPO Z0Z0J0ZR a

2031 8

b

2033

0Zrl0skZ ZpZ0apop pZ0onZ0Z Z0Z0Z0Zb PZ0MPAnZ Z0MBZ0Z0 0OPL0ZPO S0Z0ZRZK a

0Z0l0arj o0ZrZ0Zp 0opo0o0Z Z0Z0mPo0 0ZPZ0ZPZ ZPZ0APZ0 PZ0S0LPZ Z0ZRZBJ0 a

2030 8

Activation of pieces

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0j0s Z0Z0opap pZRZ0ZpZ lpZPm0Z0 0Z0ZPA0Z Z0ZBZ0Z0 0ZNZ0OPO Z0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2035 8 7 6 5 4 3 2 1

2038

0Z0Z0skZ opZbm0sp 0lnZ0ZpZ Z0ZpZ0M0 0ZpO0ZPL O0O0Z0S0 0Z0ABO0O S0Z0J0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2040

0s0ZqskZ Z0ZnZpZ0 bZpo0ZpZ o0Z0a0Zp 0Z0ZPZPO ZBM0MPZ0 PO0L0Z0Z ZKZRZ0ZR a

c

rZ0lrmkZ Z0o0a0op 0Zpobo0Z o0Z0oNZ0 0Z0OPZ0M Z0O0Z0Z0 PO0Z0OPO S0AQS0J0 a

2037 8

b

2039

0s0Z0skZ Z0Z0Zpo0 RZpZpZ0Z ZpZnZnZ0 0Z0Z0l0Z ZQZ0Z0ZP 0OPZBAPZ Z0ZRZ0J0 a

rZ0ZkZ0s obl0apop 0ZnZpZ0Z Z0o0Z0Z0 0ZPZ0ZnZ O0MBANZ0 0OQZ0OPO S0Z0S0J0 a

2036 8

Activation of pieces

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0Z0Z Zpl0Zpjp 0Z0onZpZ o0Z0Z0Z0 0ZPZ0Z0Z Z0Z0S0Z0 PO0L0OPO ZBZ0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2041 8 7 6 5 4 3 2 1

2044

rZbZ0skZ ZpZ0Zpap 0Z0Z0mpZ lNZ0m0Z0 pZ0ZPZ0Z O0M0A0Z0 0O0ZBZPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2046

0ZrZ0skZ opZ0ZnZp 0Z0oblpZ ZPm0opZ0 0ZPZ0Z0Z Z0Z0MPO0 PA0Z0ZBO Z0ZRLRZK a

c

rZbZrZkZ opZ0Zpop 0Znl0m0Z Z0apZ0Z0 0Z0Z0Z0Z Z0OBZNZP POQM0OPZ S0A0ZRJ0 a

2043 8

b

2045

0Z0ZnZkZ Zpsqorap pZ0o0Z0Z Z0ZPZpZ0 0O0A0Z0Z ZPZ0ZPZ0 RZ0L0ZPO Z0Z0SBJ0 a

0Z0Z0Z0s opl0spj0 0Z0Z0mpZ Z0oPZpZ0 0ZPZ0O0o ZPLBZRZP PZ0Z0ZPZ S0Z0Z0J0 a

2042 8

Activation of pieces

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ m0Znapop 0Z0ZpZ0Z Z0ZpO0Z0 0o0O0Z0O oPZ0ZNOB PZ0Z0O0M S0AQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2047 8 7 6 5 4 3 2 1

2050

rZbl0skZ ZpZ0Zpop pZ0ZpZnZ Z0ZnM0O0 0Z0ONZ0Z Z0Z0Z0Z0 PO0Z0OPZ SBZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2052

0sqZ0skZ Z0Z0apop pZbo0m0Z O0ZpZ0Z0 0Z0OpZ0Z Z0O0Z0Z0 QOBM0OPO S0A0ZRJ0 a

c

rZ0s0ZkZ oplnZpap 0ZpZpZpZ Z0Z0O0Z0 0ZBZ0O0Z Z0L0A0Z0 POPZ0ZPO S0Z0S0J0 a

2049 8

b

2051

rZ0ZkZ0s ZbZ0apop plnZpZ0Z Z0ZnO0Z0 Po0ZNZ0Z Z0ZBZNZ0 0O0Z0OPO S0AQS0J0 a

0Zks0Z0s lpZ0Z0o0 0ZnZ0Z0o Z0ZpZpZ0 0Z0O0Z0Z Z0Z0A0Z0 PO0L0OPJ S0Z0S0Z0 a

2048 8

Activation of pieces

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0l0skZ Z0Z0Zpap 0Zno0mpZ ZbZ0o0Z0 0Z0ZPZ0Z ZPZ0APO0 PZ0LNZBO Z0SNJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2053 8 7 6 5 4 3 2 1

2056

rZrZ0Z0j obZ0l0Zp 0Z0Z0ZnZ ZBM0a0A0 0Z0opZ0Z Z0Z0Z0O0 PO0L0Z0O Z0S0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2058

rZ0Zka0s opZ0Zpop 0ZNZpm0Z l0Z0Z0Z0 0Z0O0Z0Z Z0M0Z0ZP PO0ZbOPZ S0AQZRJ0 a

c

bZ0ZrZkZ L0Z0spo0 0Mpl0Z0Z Z0ZpZ0Z0 0Z0ZBZ0Z ZPZ0O0O0 PZ0Z0O0Z Z0SRZ0J0 a

2055 8

b

2057

rZ0l0skZ ZpZ0Zpap 0Z0oPZpZ o0Z0Z0Z0 PZ0A0Z0Z Z0Z0ZPZ0 0OPZ0ZPO S0ZQJ0ZR a

rZ0l0skZ opZnZpo0 0ZpZpmpZ Z0ZpZ0Z0 0aPO0Z0Z Z0M0ONZ0 PO0AQOPO S0Z0ZRJ0 a

2054 8

Intermediate move

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0skZ opZ0apo0 0ZBZpZqZ Z0o0Z0Zp 0Z0Z0Z0Z ZPZPO0ZQ PS0Z0OPO Z0A0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2059 8 7 6 5 4 3 2 1

2062

0s0lka0s o0ZpZ0op bZ0ZpZ0Z Z0o0OpZ0 0o0ZnM0O Z0Z0Z0O0 POPZ0OBZ S0AQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2064

0Z0ZrZkZ Z0Z0ZpZ0 0Z0ZbZpZ l0apOPZp 0Z0A0ZnO Z0MBZ0L0 Ps0Z0ZPZ Z0ZRZRJ0 a

c

0Z0srZkZ MpZ0Z0Zp 0ZpoblpZ Z0m0a0Zn 0OPZPo0Z Z0M0ZPZ0 PZ0LBAPO Z0SRZ0J0 a

2061 8

b

2063

rZ0lrZkZ ZpZ0Zpo0 pZna0m0o Z0O0obZ0 PO0o0Z0Z Z0ZPZNO0 0ZNZ0OBO ZRAQS0J0 a

rZ0ZrZkZ Z0Z0Zpap 0l0Z0mpZ opZPMBA0 0ZpZ0L0Z O0M0Z0ZP 0O0Z0OPZ m0Z0S0J0 a

2060 8

Intermediate move

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0Z0j ZpZ0ZpZp pZpZbl0Z Z0Z0ZNZ0 PO0ZPL0O Z0aBZ0Z0 0Z0Z0OPZ Z0S0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2065 8 7 6 5 4 3 2 1

2068

0s0snj0Z opZ0Z0ob 0Z0Zpo0o M0Z0Z0Z0 PO0mPZ0Z Z0M0ZPZ0 0Z0Z0JPO Z0SRZBZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2070

rZ0l0s0j apZ0Zpop 0ZpO0mnZ o0Z0ZbM0 0Z0ZNZ0Z O0Z0Z0ZP BOQA0OPZ Z0S0S0J0 a

c

rZ0Z0skZ ZNZ0Zqo0 pZ0ZRmpo ZpZ0Z0Z0 0Z0O0Z0Z ZQZ0Z0Z0 PO0Z0OPO Z0S0Z0J0 a

2067 8

b

2069

0Z0lrjnL obs0ZpoB 0o0ZpZ0o Z0Z0a0Z0 0Z0O0Z0Z O0o0Z0M0 0O0Z0OPO Z0ZRS0J0 a

rZ0l0skZ Z0Znapo0 0Z0ZpZ0o o0o0O0Z0 0o0O0Z0O Z0ZBZbZR POQA0OPZ S0Z0J0Z0 a

2066 8

Intermediate move

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0ZkZ Z0oqZpob 0Z0Z0Zno Z0A0O0Z0 0Z0Z0ZPZ ZBOnZQZP 0Z0M0O0Z Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2071 8 7 6 5 4 3 2 1

2074

rZ0l0skZ ZpobZpo0 pZnZ0Z0o Z0Z0oNZ0 0Z0ZPZ0Z ZBO0ZQZ0 PO0Z0OPO S0aRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2076

0ZbZ0ZkZ o0L0ZpZ0 0o0ZpapZ m0Z0Z0Z0 0Z0OPZ0Z Z0ZBZNZ0 Pl0Z0OPZ Z0Z0Z0J0 a

c

rZ0Z0Z0s o0Znj0a0 0Z0ZBl0o Zpo0M0Z0 PZpO0OQZ Z0M0Z0Zp 0O0Z0ZbO S0Z0J0S0 a

2073 8

b

2075

rZ0Zkans opo0Zpop 0ZnZ0Z0Z Z0Zqo0Z0 0ZBO0Z0Z Z0O0ZbZ0 PO0M0OPO S0AQJ0ZR a

0Zks0Z0s opoqapZ0 0ZnZ0m0o Z0ZpZ0Z0 QZ0O0ZpZ Z0OBZNA0 PO0Z0OPO S0Z0S0J0 a

2072 8

Intermediate move

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ opo0ZpAp 0ZnZ0ZpZ Z0ZnZ0Z0 0ZPZ0Z0Z ZPZ0O0Z0 PZ0LNOPO S0Z0JBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2077 8 7 6 5 4 3 2 1

2080

0s0l0skZ Z0ZQZpop 0Z0Z0abZ ZpZ0o0M0 0Z0Z0Z0Z MBO0m0ZP 0O0Z0OPZ Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2082

rZ0ZrZkZ o0Z0apop qZbZ0m0Z Z0Z0ZQZ0 0o0A0Z0Z ZBMRZ0Z0 POPZ0ZPO Z0J0ZRZ0 a

c

0ZqZrZkZ Z0ZbZpZ0 pZ0o0apo ZpZ0O0Z0 0O0Z0O0Z O0Z0Z0MP BZrL0ZPZ Z0ZRS0J0 a

2079 8

b

2081

rZ0lkZ0s opZNZpo0 0ZpapZ0o Z0ZpZ0Z0 0ZPObZ0Z ZPZ0O0Z0 PA0ZBOPO S0ZQJ0ZR a

rZ0Z0j0s obS0Zpop 0o0apm0Z Z0ZqZ0Z0 QZ0O0Z0A Z0Z0O0Z0 PO0M0OPO Z0Z0JBZR a

2078 8

Intermediate move

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rl0ZrZkZ obZ0mpo0 0o0Z0Z0Z Z0ZBZ0Op 0Z0Z0ZQZ ZPZ0Z0O0 PA0ZPZ0O S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2083 8 7 6 5 4 3 2 1

2086

0ZrsqZkZ ZbZ0opap 0ZpZnmpZ o0Z0M0Z0 Po0OPZ0Z ZQM0A0Z0 0O0ZBOPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2088

0ZrZrm0Z ZpZ0ZkZ0 pZ0o0mpo l0ZPO0Z0 PZpZ0ObZ Z0OBA0ZP 0Z0L0ZPZ S0Z0ZRZK a

c

rZbZ0ZkZ Z0lnZpZ0 pZ0o0ZpA Z0mPa0Z0 0opZ0Z0Z Z0M0Z0Z0 POBZ0ZPO S0ZQZRZK a

2085 8

b

2087

0Zrl0Z0s Z0Z0Zpj0 pm0a0mpZ ZpZpM0Z0 0ZpO0Z0o ZPZ0ZQM0 PZPZROPO Z0A0S0J0 a

0Z0s0skZ o0Znapop 0ZbZpZ0Z l0Z0O0Z0 0o0A0ZQZ ZBM0Z0Z0 POPZ0ZPO ZKZRZRZ0 a

2084 8

Intermediate move

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0s0j o0Z0ZPop 0Z0Z0A0Z Z0o0m0Zn 0ZBZPZ0Z Z0O0Z0Z0 PZ0ZbOPO S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2089 8 7 6 5 4 3 2 1

2092

0Z0Z0Z0Z Z0S0Zpak 0Z0Z0Zpo ZpZ0oqZ0 0O0ZQm0Z Z0ZPZ0ZP 0Z0A0OPZ s0Z0M0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2094

0Z0s0ZkZ obZqZpo0 0o0Zpa0o Z0Z0Z0Z0 0Z0M0Z0Z O0ZQA0Z0 0O0Z0OPO ZBs0S0J0 a

c

rZ0ZqZkZ o0S0Z0op 0o0ZpZ0Z Z0Z0O0OP 0Z0o0ZPZ Z0Z0Z0Z0 POQZ0Z0J Z0Z0Z0Zb a

2091 8

b

2093

0Z0Z0ZkZ opZ0Z0Zp 0ZpZ0ZqZ Z0Z0Z0AP 0ZnOrZQZ Z0Z0Z0Z0 PO0Z0S0J Z0Z0Z0Z0 a

rZbZ0Z0s Zpo0Zpj0 0M0o0ZpZ Z0ZPonl0 0O0Z0Z0Z Z0ZPO0O0 PZQA0OBZ Z0S0ZRJ0 a

2090 8

Intermediate move

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZkZ ZpZ0l0Zp pZbM0ZpZ Z0Z0o0s0 0ZPZ0Z0Z Z0Z0LrOB PO0Z0O0Z Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2095 8 7 6 5 4 3 2 1

2098

rZ0ZkZ0s ZbZqa0op pZnopZ0Z Z0m0Z0O0 0o0MPZ0Z Z0M0A0ZQ POPZBZ0O Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2100

rZ0Z0ZkZ oblnZpop 0m0Z0Z0Z L0Z0s0Z0 0ZpZPZ0Z ZNZ0APZ0 PZ0ZBZPO Z0S0ZRJ0 a

c

rZbl0ZkZ ZpZ0Zra0 pZ0o0Z0o O0O0Zpo0 0ZQMpZ0Z ZNZnO0O0 0S0Z0OBO Z0ZRZ0J0 a

2097 8

b

2099

rZ0ZrakZ Z0l0Z0op pZbZpZ0Z Z0Z0o0O0 0o0ZPZ0Z O0MRZ0Z0 0OPZ0LBO Z0Z0ZRZK a

0ZrZ0ZkZ Z0l0Zpop po0Z0O0Z Z0Z0ZRZ0 0ZpZ0Z0Z OnZ0O0O0 0A0ZQZbO Z0Z0ZRJ0 a

2096 8

Intermediate move

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZqskZ opZ0Z0a0 0Zpo0Zpo Z0ZPopA0 PO0Z0Z0Z Z0Z0ZNZP 0ZPZ0OPZ S0ZQSBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2101 8 7 6 5 4 3 2 1

2104

rl0ZrZka ZpZ0ZpZp nZponZpA oNZNZ0Z0 0ZPZPO0Z O0Z0Z0Z0 0O0Z0ZPO Z0LRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2106

0ZbZ0ZkZ ZqZ0Zpo0 0Z0S0Z0o s0Z0OpZP 0Z0L0M0Z OpZnZ0Z0 0O0Z0ZPZ ZKZ0Z0Z0 a

c

rZ0lrakZ ZpZbZ0op 0ZPo0o0Z Z0Z0ZpZ0 0mPZ0Z0Z Z0MQO0O0 0Z0ZNOBO S0Z0ZRJ0 a

2103 8

b

2105

rZbZ0skZ ZpZna0op 0l0ZpZ0Z Z0ZpO0Z0 pZ0Z0O0O OnM0ANZ0 0O0L0JPZ Z0ZRZBZR a

rZbZ0ZkZ ZpZ0Arop 0l0Z0Z0Z ZPZ0o0Z0 pZ0OnZ0Z O0Z0ZNZ0 0Z0Z0ZPO ZRZQZRJ0 a

2102 8

Intermediate move

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZbZ0o0ap pZ0ZPmpZ Z0L0Z0M0 0Z0Z0l0Z Z0M0Z0A0 PZ0Z0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2107 8 7 6 5 4 3 2 1

2110

rZrl0ZkZ opZbapop 0ZnZ0m0Z Z0ZpZ0Z0 0Z0Z0A0Z O0M0O0Z0 0OQMBOPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2112

rZ0l0skZ ZbZ0apo0 po0Zpm0o Z0Z0Z0Z0 PZNO0Z0Z Z0MBZ0O0 0O0ZQOPZ S0ZRZ0J0 a

c

rZ0s0ZkZ opZ0apo0 0Z0Zbm0o l0ZpZ0Z0 0Z0L0Z0Z Z0M0A0O0 PO0ZPOBO Z0SRZ0J0 a

2109 8

b

2111

rZ0l0skZ ZbZ0apZp pZnZpmpZ ZpZ0Z0Z0 0Z0O0Z0Z OBMQZNZ0 0O0Z0OPO S0A0S0J0 a

0Z0srZkZ opZ0Zpo0 0ZnZ0l0o Z0ZpZbZ0 0Z0Z0Z0Z ZPS0ONOP PZ0L0OBZ Z0S0Z0J0 a

2108 8

Weakness of the isolated pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ opZ0lpop 0ZnZ0Z0Z Z0a0Z0Z0 0Z0obZ0Z ZPZ0ZNO0 PA0LPOBO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2113 8 7 6 5 4 3 2 1

2116

rZbl0skZ opZ0apo0 0ZnZpm0o Z0Z0Z0Z0 0ZBO0Z0A Z0M0ZNZ0 PO0Z0OPO Z0SQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2118

rZbl0skZ o0Z0apop 0o0Zpm0Z Z0Z0M0Z0 0mBO0Z0Z Z0M0Z0Z0 PO0ZQOPO S0ARZ0J0 a

c

rZbZ0skZ opZ0apop 0ZnZpZ0Z Z0ZqZ0Z0 0ZRO0Z0Z O0ZBZNZ0 0OQA0OPO Z0Z0J0ZR a

2115 8

b

2117

rZbZ0skZ opl0mpop 0Zna0Z0Z ZBZpZ0Z0 0Z0Z0Z0A ZNZ0ZNZ0 POPZ0OPO S0ZQZRJ0 a

0Z0s0ZkZ opZrZpo0 0ZnZbZ0o l0ZpZ0Z0 0Z0Z0Z0Z ZPZ0ONZP PL0SBOPZ Z0ZRZ0J0 a

2114 8

Weakness of the isolated pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZqskZ obZ0ZpZp 0o0Z0ZpZ Z0Zpa0Z0 0Z0M0Z0Z ZPZ0L0O0 PZ0ZPOBO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2119 8 7 6 5 4 3 2 1

2122

0Zrl0skZ opZ0opap 0ZnZ0mpZ Z0Z0ZbZ0 0Z0O0Z0Z Z0M0ANZP PO0ZBOPZ S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2124

rZ0lkZ0s ZpZ0mpo0 panZ0Z0o Z0ZpZ0Zb 0Z0Z0Z0Z ZNOBZNZP PO0Z0OPZ S0AQS0J0 a

c

0Z0Z0skZ Z0ZnZpo0 0o0ZpZ0o Z0Z0Z0Z0 0Z0O0Z0Z ZRZQZ0ZP 0O0M0OPJ Z0l0Z0Z0 a

2121 8

b

2123

0Z0s0skZ opZ0Zpop 0Znl0Z0Z Z0ZpZ0Z0 0Z0M0Z0Z Z0O0S0ZP PO0ZQOPZ S0Z0Z0J0 a

rZblrZkZ apZ0Zpop pZnZ0m0Z Z0ZpZ0Z0 0Z0Z0Z0Z ZPM0ONZ0 PA0ZBOPO Z0SQZRJ0 a

2120 8

Weakness of the isolated pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opZ0apop 0ZnZpm0Z Z0Z0Z0Z0 0ZBO0Z0Z Z0M0ANZ0 PO0ZQOPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2125 8 7 6 5 4 3 2 1

2128

rZ0l0skZ opZ0Zpop 0a0Z0ZnZ Z0Z0Z0Z0 0Z0o0Z0Z ZNZQZ0ZP POPZ0OPZ S0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2130

rZbl0skZ ZpZnapop pZ0Zpm0Z Z0Z0Z0A0 PZBO0Z0Z Z0M0ZNZ0 0O0Z0OPO Z0SQZRJ0 a

c

0Zrs0ZkZ opZ0apo0 0ZbZpm0o Z0Z0M0Z0 0m0O0Z0A ZBM0Z0Z0 PO0Z0OPO Z0SRZ0J0 a

2127 8

b

2129

0ZrZ0skZ opZ0mpo0 0Z0ZpZ0o lbZ0M0Z0 0Z0O0Z0Z ZQM0Z0Z0 PO0Z0OPO Z0ZRS0J0 a

rZ0l0skZ Zpa0Zpo0 pZ0Zpm0o Z0MbMnZ0 0Z0O0A0Z O0ZQZ0Z0 0O0Z0OPO ZBS0ZRJ0 a

2126 8

Weakness of the isolated pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lkZ0s opZbmpop 0Zna0Z0Z ZBZpZ0Z0 QZ0Z0Z0Z ZNO0ZNZ0 PO0Z0OPO S0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2131 8 7 6 5 4 3 2 1

2134

rZ0l0skZ opZ0mpo0 0Zna0Z0o ZBZpZ0Z0 0Z0Z0ZbA ZNZ0ZNZ0 POPZ0OPO S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2136

rZ0l0skZ opZ0Zpop 0ZnZbm0Z Z0apZ0Z0 0Z0Z0A0Z Z0M0ONZ0 PO0ZBOPO S0ZQZRJ0 a

c

rZ0s0ZkZ o0Z0l0Zp 0ZnZbapA Z0o0o0Z0 0oPZ0ZPZ Z0Z0ZNZP PO0ZQOBZ Z0ZRZRJ0 a

2133 8

b

2135

rZ0ZrZkZ ZplbZpop pZ0Z0ZnZ Z0apZ0Z0 0ZnM0Z0Z Z0OBZNZP POQZ0OPZ Z0ARS0J0 a

rZbl0skZ o0Z0Zpop 0onZpa0Z Z0onZ0Z0 0Z0Z0Z0Z ZPM0ZNO0 PAQOPOBO S0Z0ZRJ0 a

2132 8

Weakness of the isolated pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbs0ZkZ ZpZ0apop pZnlpm0Z Z0Z0Z0A0 0Z0O0Z0Z O0MQZNZ0 0O0ZBOPO S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2137 8 7 6 5 4 3 2 1

2140

rZ0Z0skZ opZ0lpop 0ZnZbm0Z Z0apZ0Z0 0Z0Z0Z0Z ZPM0ONZ0 PA0ZBOPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2142

rZblrZkZ opZ0Zpop 0Z0Z0m0Z Z0Zpa0Z0 0Z0Z0Z0Z ZPMBO0Z0 PAQZ0OPO S0Z0J0ZR a

c

0Z0s0Z0Z opj0Zpo0 0m0Zpm0o Z0Z0Z0Z0 0Z0Z0Z0O ZBZPZ0M0 PO0J0OPZ Z0Z0Z0ZR a

2139 8

b

2141

rZblkZ0s Z0Z0apop pZ0Z0m0Z Z0ZpZ0Z0 0Z0Z0Z0Z Z0MBZ0Z0 PO0Z0OPO S0AQZRJ0 a

rZ0l0skZ ZbZ0apop ponZ0m0Z Z0opZ0A0 BZ0O0Z0Z Z0M0ONZ0 PO0Z0OPO Z0SQZRJ0 a

2138 8

Weakness of the isolated pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0skZ opZbZpZp 0lnZpapZ Z0Z0Z0Z0 0Z0OQZ0Z O0ZBANZ0 0O0Z0OPO S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2143 8 7 6 5 4 3 2 1

2146

rZbs0ZkZ opl0apZp 0ZnZpZpZ Z0ZnZ0M0 0Z0O0Z0Z OBZQZ0Z0 0O0ZNOPO S0A0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2148

rZbZ0skZ ZpZ0lpop pZ0a0m0Z Z0Zpm0Z0 0Z0Z0Z0Z Z0M0ONZP POQABOPZ S0ZRZ0J0 a

c

rZ0Z0ZkZ opZ0Zpop 0Zpl0ZnZ Z0Z0Z0Z0 0Z0O0ZQZ Z0Z0Z0ZP PO0A0OPZ Z0Z0S0J0 a

2145 8

b

2147

rZ0lrZkZ opZbapop 0ZnZ0Z0Z ZBZpZ0Z0 0Z0M0Z0Z Z0Z0APZ0 POPL0ZPO ZKZRZ0ZR a

rZ0lrZkZ Z0Z0Z0op pZ0Z0o0Z ZpZpm0Z0 0Z0ZbL0Z ZPZ0ZNO0 PZ0ZPOBO Z0S0ZRJ0 a

2144 8

Weakness of the isolated pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0sqZkZ Zpa0Zpo0 pZnZbm0o Z0ZpZ0Z0 0Z0Z0Z0L APMBONZ0 PZ0Z0OPO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2149 8 7 6 5 4 3 2 1

2152

rZbl0s0Z opZ0Zpjp 0ZnZpZpZ ZBZnZ0Z0 0Z0O0Z0Z ZQM0ZNZ0 PO0Z0OPO S0Z0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2154

0ZrZ0skZ ZbZ0lpop pm0ZpZ0Z ZpMnZ0Z0 0Z0O0Z0Z Z0MQZ0O0 PO0Z0OBO Z0SRZ0J0 a

c

rm0l0skZ ZbZ0apop pZ0Zpm0Z Z0Z0Z0Z0 RZ0O0Z0Z ZNZBZNZ0 0O0ZQOPO Z0A0ZRJ0 a

2151 8

b

2153

0Zrl0skZ obZ0apop 0o0Zpm0Z Z0Z0M0A0 0m0O0Z0O Z0M0Z0Z0 PO0ZQOPZ SBZRZ0J0 a

rZbl0ZkZ opZ0Zpop 0Z0Z0m0Z Z0Zps0Z0 0Z0Z0Z0Z ZPZ0Z0O0 PZ0MPOBO S0ZQZRJ0 a

2150 8

Weakness of the isolated pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ opZ0apop 0Z0Zbm0Z l0ZpZ0A0 0Z0L0Z0Z O0M0Z0O0 0O0ZPOBO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2155 8 7 6 5 4 3 2 1

2158

0Z0ZrZkZ opZ0spop 0Z0Z0m0Z ZqZpZ0Z0 0Z0AnZ0Z ZNZ0ZQZ0 POPZ0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2160

0Z0s0ZkZ opZrZ0op 0ZnZ0o0Z Z0ZpZ0Z0 0Z0Z0Z0Z ZPZ0OKO0 PA0S0O0O Z0ZRZ0Z0 a

c

rZ0Z0skZ opZ0mpop 0Z0l0Z0Z Z0ZpZbZ0 NZ0Z0Z0Z Z0Z0ZNZ0 POPL0OPO S0Z0ZRJ0 a

2157 8

b

2159

0Z0ZrZkZ Z0ZbZ0op pZ0Z0m0Z ZpZpZ0Z0 0Z0M0Z0Z Z0Z0Z0O0 PO0Z0OPZ ZBS0Z0J0 a

rZbZ0skZ opZ0Zpop 0lnZ0Z0Z Z0ZpZ0Z0 0Z0M0Z0Z ZPZ0O0Z0 PZ0LBOPO S0Z0J0ZR a

2156 8

Weakness of the isolated pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZqsrZkZ opZ0apop 0Z0m0m0Z Z0ZpA0Z0 0Z0Z0Z0Z ZNZQZNZ0 POPZ0OPO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2161 8 7 6 5 4 3 2 1

2164

rZ0l0skZ opZ0apop 0ZbZpm0Z Z0Z0M0A0 0m0O0Z0Z ZBMQZ0Z0 PO0Z0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2166

rZ0lkZ0s opZbapop 0m0Zpm0Z Z0Z0Z0A0 0Z0O0Z0Z ZBM0ZNZ0 PO0Z0OPO S0ZQZRJ0 a

c

rZ0l0skZ opZbapop 0Z0Zpm0Z Z0ZnM0Z0 0Z0O0Z0Z O0M0Z0Z0 0O0Z0OPO SBAQS0J0 a

2163 8

b

2165

rZ0l0skZ ZbZ0apop po0Zpm0Z Z0Z0M0Z0 PmBO0Z0Z Z0M0A0Z0 0O0ZQOPO Z0ZRZRJ0 a

rZbZ0skZ opZ0Zpo0 0Zpl0m0o Z0Z0Z0Z0 0Z0O0Z0Z ZBS0ZNZ0 PO0Z0OPO Z0ZQS0J0 a

2162 8

Isolated pawn, attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ oplbapZp 0ZnZpZpZ Z0ZnZ0Z0 0Z0ONZ0Z O0ZBZNZ0 0OQZ0OPO S0A0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2167 8 7 6 5 4 3 2 1

2170

0Zbl0skZ s0Z0apop po0Zpm0Z Z0Z0M0Z0 PmBO0Z0Z Z0M0ZQZ0 0O0Z0OPO S0ARZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2172

rZbZ0skZ Zpl0apop pZ0ZpZ0Z Z0ZnZ0Z0 Pm0O0Z0Z Z0M0ZNZ0 0O0ZQOPO SBARZ0J0 a

c

rZbl0skZ o0Z0apZp 0onZpmpZ Z0Z0Z0A0 0Z0O0Z0Z O0MQZNZ0 0OBZ0OPO S0Z0J0ZR a

2169 8

b

2171

rZ0l0skZ obZ0apop 0o0Zpm0Z m0Z0Z0Z0 0Z0O0Z0Z O0M0ANZ0 0OBZ0OPO S0ZQS0J0 a

rZ0l0skZ opZbapZp 0ZnZpmpZ Z0Z0Z0A0 0Z0O0Z0O Z0MBZNZ0 PO0ZQOPZ Z0ZRJ0ZR a

2168 8

Isolated pawn, attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0Z0ZkZ oqZ0Zpo0 0Z0ZbZ0o ZBLpZ0Z0 0Z0Z0Z0Z Z0Z0ONZ0 PO0Z0OPO Z0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2173 8 7 6 5 4 3 2 1

2176

rZ0Z0skZ opZbapo0 0m0Zpm0o l0Z0Z0A0 0Z0O0Z0O ZBM0ZNZ0 POQZ0OPZ ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2178

rZbl0skZ opZ0Zpop 0ZpZ0Z0Z Z0ZnZ0Z0 0ZBO0Z0Z Z0S0ZNZP POQZ0OPZ Z0Z0S0J0 a

c

0Z0srZ0j opZ0l0op 0anZ0o0Z Z0ZpZ0Z0 0Z0ZbZ0Z ZPZ0ONO0 PZ0Z0OBO A0SRZQJ0 a

2175 8

b

2177

0Z0s0skZ oplnZpop 0ZpZ0ZnZ Z0Z0Z0Z0 0Z0ONZ0Z ZBZ0SQZ0 PO0Z0OPO Z0ZRZ0J0 a

rZ0l0skZ Z0Zbapop pZ0ZpZ0Z o0ZnM0Z0 0m0O0Z0Z Z0M0Z0Z0 0O0ZQOPO SBARZ0J0 a

2174 8

Isolated pawn, attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ obZ0Zpop 0o0ZpmnZ Z0Z0Z0A0 0ZBO0Z0Z O0MQZ0Z0 0O0Z0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2179 8 7 6 5 4 3 2 1

2182

rZ0l0skZ ZpZ0apop pZbZpm0Z Z0ZnM0A0 PZ0O0Z0Z ZBM0Z0Z0 0O0ZQOPO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2184

rZ0lbskZ ZpZ0apop pZ0Zpm0Z Z0ZnM0Z0 PZ0O0Z0Z ZBM0Z0Z0 0O0ZQOPO S0ARZ0J0 a

c

0Zrl0skZ obZ0apZp 0o0ZpmpZ Z0Z0M0A0 0m0O0Z0Z Z0M0Z0S0 PO0Z0OPO SBZQZ0J0 a

2181 8

b

2183

0Z0s0skZ opZ0Zpo0 0Z0Zbl0o Z0Zpm0Z0 NZ0Z0Z0Z O0ZBO0Z0 0O0Z0OPO Z0SQZRJ0 a

rZ0l0skZ opZ0apop 0ZpZbm0Z Z0ZnZ0A0 0Z0O0Z0Z ZBM0ZNZP PO0Z0OPZ S0ZQS0J0 a

2180 8

Isolated pawn, attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

qZ0s0ZkZ o0Zrapop 0obZpm0Z m0Z0Z0Z0 BZ0O0Z0Z O0M0ANZ0 0O0ZQOPO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2185 8 7 6 5 4 3 2 1

2188

rZbl0skZ ZpZ0apop pZ0Zpm0Z Z0ZnM0Z0 PZBO0Z0Z Z0M0Z0Z0 0O0ZQOPO S0ARZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2190

rZbl0s0Z o0Z0Zpjp 0o0ZpZpZ Z0ZnM0Z0 0Z0OBZ0Z O0Z0Z0Z0 0O0Z0OPO Z0SQZRJ0 a

c

rZ0l0ZkZ opZbZpo0 0ZpZ0m0o Z0Z0Z0Z0 0Z0O0Z0Z ZBM0S0ZP PO0L0OPZ Z0Z0Z0J0 a

2187 8

b

2189

rZ0s0ZkZ opZbZpo0 0a0ZpZ0o mPZ0Z0Z0 PA0OBl0Z Z0Z0ZNZP 0Z0Z0OPZ S0ZQZRJ0 a

0Z0l0skZ o0s0apo0 Bo0Zpm0o Z0Z0Z0Z0 0Z0O0Z0Z Z0M0ZPO0 PO0ZQO0Z Z0SRZ0J0 a

2186 8

Isolated pawn, attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ opZbZpo0 0lnZpa0o Z0ZnZ0Z0 0ZBO0Z0Z O0Z0ZNZ0 0OQZNOPO S0ARZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2191 8 7 6 5 4 3 2 1

2194

rZbZ0skZ opZ0apop 0ZnZ0Z0Z l0ZpZ0Z0 0Z0Z0A0Z OQM0ONZ0 0O0Z0OPO Z0S0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2196

rZ0l0skZ obZ0apop 0onZpm0Z Z0Z0Z0A0 0Z0O0Z0Z O0MBZNZ0 0O0Z0OPO S0ZQS0J0 a

c

0Zrs0ZkZ obZqapop no0Z0m0Z Z0opZ0Z0 0Z0O0A0Z Z0M0Z0OP PO0ZPOBZ Z0SQSNJ0 a

2193 8

b

2195

rZ0sbZkZ Zpl0apop pZnZ0m0Z Z0ZpZPZ0 PZ0M0Z0Z Z0M0ABZ0 0OPZQZPO S0Z0ZRZK a

rZ0lrmkZ ZbZ0apop po0Zpm0Z Z0Z0Z0A0 PZBO0Z0Z Z0M0ZNZ0 0O0ZQOPO Z0SRZ0J0 a

2192 8

Isolated pawn, attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lrZkZ opZ0Zpop 0anZ0Z0Z Z0ZNZ0Z0 0ZNo0ZbZ Z0Z0Z0O0 PO0ZPOBO Z0SQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2197 8 7 6 5 4 3 2 1

2200

0ZrZ0skZ obZ0apop 0onlpZ0Z Z0ZnZ0Z0 0Z0O0Z0Z O0MBANZ0 0O0ZQOPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2202

0Zrl0skZ obZnZpop 0o0Zpm0Z Z0Z0Z0A0 0aBO0Z0Z Z0M0ZNZ0 PO0ZQOPO Z0S0ZRJ0 a

c

rZbl0skZ ZpZ0apop pZ0Zpm0Z Z0Z0Z0Z0 PmBO0Z0Z Z0M0ZNZ0 0O0ZQOPO S0ARZ0J0 a

2199 8

b

2201

rZ0ZrZkZ o0lnZpop 0obZpm0Z Z0Z0Z0Z0 0Z0O0Z0A Z0OBZNZ0 PZ0Z0OPO Z0SQS0J0 a

rZ0l0skZ obZnapZp 0o0ZpmpZ Z0Z0Z0A0 0Z0O0Z0Z O0MQZ0Z0 0OBZNOPO Z0ZRZRJ0 a

2198 8

Isolated pawn, attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ obZ0apop 0o0Zpm0Z Z0Z0M0Z0 0m0O0Z0Z Z0M0Z0Z0 PO0AQOPO ZBZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2203 8 7 6 5 4 3 2 1

2206

rZbl0skZ ZpZ0apop pZ0Zpm0Z Z0Z0Z0A0 PmBO0Z0Z Z0M0ZNZ0 0O0Z0OPO S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2208

0ZrZ0skZ obZnlpop 0o0Zpm0Z Z0Z0Z0A0 0aBO0Z0Z ZQM0ZNZ0 PO0Z0OPO Z0S0S0J0 a

c

rZ0ZrZkZ ZpZ0Apop plna0Z0Z Z0ZpZ0Z0 0Z0Z0ZbZ ZNO0ZNZ0 PO0ZBOPO S0ZQS0J0 a

2205 8

b

2207

0ZrarZkZ o0ZqZpZp 0Z0Z0ZpZ ZpZpZ0Z0 0Z0ZnZ0Z ZNORAQZ0 PO0Z0OPO S0Z0Z0J0 a

rZbZ0skZ opZ0Zpop 0ZnapZ0Z Z0Z0Z0Zq 0Z0OBZ0Z Z0ZQZ0Z0 PO0ZNOPO S0A0ZRJ0 a

2204 8

Isolated pawn, attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opZ0mpop 0lna0Z0Z Z0ZpZ0Z0 0Z0Z0Z0A ZNZBZNZ0 POPZ0OPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2209 8 7 6 5 4 3 2 1

2212

rZbZ0skZ opl0mpop 0Zna0Z0Z ZBZpZ0A0 0Z0M0Z0Z Z0Z0ZNZP POPZ0OPZ S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2214

rZ0l0skZ obZ0apop 0o0ZpZ0Z m0ZnZ0A0 0Z0O0Z0Z Z0MBZNZ0 PO0ZQOPO Z0ZRS0J0 a

c

rZ0Z0skZ ZbZ0Zpop po0ZpZ0Z l0Z0M0Z0 PZBO0Z0Z Z0ZQZ0Z0 0O0a0OPO S0Z0ZRJ0 a

2211 8

b

2213

rZ0ZrZkZ opZ0mpop 0lna0Z0Z Z0ZpZ0Z0 0Z0M0Z0A ZNZ0Z0Z0 POPZROPO S0ZQZ0J0 a

0s0Z0skZ Zpo0mpop 0Z0Z0ZqZ o0Z0ZbZ0 0Z0O0Z0Z OQM0A0O0 0OnZ0OBO Z0S0ZRJ0 a

2210 8

Isolated pawn, attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ Z0Z0apop po0Zpm0Z Z0Z0M0Z0 PmBO0Z0Z Z0M0A0Z0 0O0ZQOPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2215 8 7 6 5 4 3 2 1

2218

0ZrlrZkZ ZbZ0apop pZnZpm0Z ZpZ0Z0A0 0Z0O0Z0Z O0MQZNZ0 BO0Z0OPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2220

0l0srZkZ ZbZ0apZp ponZpmpZ Z0Z0Z0A0 0Z0O0Z0O OBMQZNZ0 0O0Z0OPZ Z0ZRS0J0 a

c

rZ0Z0lkZ ZpsbZpo0 pZ0Zpm0o Z0Z0M0Z0 Pa0O0Z0Z ZBM0SQZ0 0O0Z0OPO Z0ZRZ0J0 a

2217 8

b

2219

0Zrl0skZ ZbZ0apop pZnZpm0Z ZpZ0Z0Z0 0Z0O0Z0Z O0MQZNZ0 0OBZ0OPO S0A0S0J0 a

0Zrs0ZkZ obZ0apo0 0onlpm0o Z0Z0Z0Z0 0Z0O0Z0Z O0M0ANZ0 0OQZ0OPO ZBZRZRJ0 a

2216 8

Isolated pawn, breakthrough by d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0arZ0skZ oqZ0Zpo0 0onZpm0o Z0Z0Z0Z0 0O0O0Z0Z O0MQZNZ0 0A0Z0OPO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2221 8 7 6 5 4 3 2 1

2224

0Z0lns0j sbZ0apop po0ZpZ0A Z0Z0M0Z0 Pm0O0Z0Z ZBM0Z0L0 0O0Z0OPO Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2226

rZ0lrZkZ opZ0apZp 0ZbZpmpA Z0Z0M0Zn 0Z0O0Z0Z O0M0ZQZ0 BO0Z0OPO S0Z0ZRJ0 a

c

rZbZrZkZ Zpa0Zpop pZnl0m0Z Z0ZpZ0Z0 0Z0Z0Z0Z ZPMQONZ0 PA0ZBOPO S0ZRZ0J0 a

2223 8

b

2225

rm0s0ZkZ o0Z0lpo0 0O0Zba0o Z0ZpZ0Z0 0Z0Z0Z0Z Z0M0ONO0 PO0L0O0O Z0ZRJBZR a

rZ0Z0skZ obZ0apop 0onlpm0Z Z0Z0Z0Z0 0Z0O0Z0Z O0MQZNZ0 0OBZ0OPO S0A0S0J0 a

2222 8

Isolated pawn, breakthrough by d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0l0skZ obZrZpop 0o0ZpmnZ Z0Z0Z0A0 0Z0O0Z0Z O0MBZ0L0 0O0Z0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2227 8 7 6 5 4 3 2 1

2230

rZ0s0ZkZ apZ0Zpop pZnZqm0Z Z0ZpZbZ0 0Z0Z0Z0M ZPM0O0Z0 PA0SBOPO Z0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2232

0ZrlrZkZ obZ0apop 0onZpm0Z Z0Z0Z0Z0 0Z0O0Z0Z O0MQZNZ0 0OBZ0OPO S0A0S0J0 a

c

0Zrl0skZ Z0ZbZpZp ponZpapZ Z0Z0Z0Z0 0O0OBZ0Z OQZ0ANZP 0Z0Z0OPZ Z0S0ZRJ0 a

2229 8

b

2231

rZrZ0ZkZ obZ0mpo0 0o0a0Z0o ZBZpZ0Z0 0O0Z0Z0Z O0Z0ONZ0 0Z0AKOPO Z0S0Z0ZR a

0ZrZ0skZ opZbapop 0ZnZpm0Z l0Z0Z0A0 0Z0O0Z0Z O0MBZNZ0 0O0ZQOPO Z0ZRS0J0 a

2228 8

Isolated pawn, breakthrough by d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ Z0Z0apop pZnZpm0Z ZpZ0Z0A0 0ZBO0Z0Z Z0M0ZNZ0 PO0Z0OPO Z0SQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2233 8 7 6 5 4 3 2 1

2236

0arZ0skZ ZpZnlpop 0ZbZpm0Z O0Z0Z0A0 0ZNO0Z0Z Z0MBZ0ZP 0Z0L0OPZ Z0S0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2238

rZblkZ0s Z0Znapop pZ0Zpm0Z ZpZ0Z0A0 0Z0O0Z0Z Z0MBZNZ0 PO0Z0OPO S0ZQZRJ0 a

c

0arl0skZ obZ0Zpo0 0o0Zpm0o Z0Z0ZnZ0 0Z0O0Z0A O0M0Z0ZQ BO0ZNOPO Z0SRZ0J0 a

2235 8

b

2237

rZbs0ZkZ opZ0ZpZ0 0Z0lpZpZ Z0Z0S0Zp 0Z0O0Z0O Z0L0ZNZ0 PO0Z0OPZ Z0Z0S0J0 a

rZ0Z0skZ ZbZ0apZp pZnZpo0Z Z0Z0Z0Zq 0Z0O0Z0Z O0MQZNZ0 BZ0Z0OPO S0Z0S0J0 a

2234 8

Isolated pawn, breakthrough by d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZkZ opZrZpo0 0ZnZpl0o Z0Z0Z0Z0 0Z0O0Z0Z Z0Z0Z0Z0 PO0ZQOPO ZBZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2239 8 7 6 5 4 3 2 1

2242

0Z0l0skZ m0Z0Zpop bo0Zpa0Z o0Z0M0Z0 0Z0O0Z0Z OQA0Z0O0 0O0Z0OBO Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2244

0Zrl0skZ obZnapo0 0o0ZpZ0o Z0Z0Z0Zn 0ZBO0Z0Z Z0M0ZNA0 PO0ZQOPO S0ZRZ0J0 a

c

rZ0snZkZ ZpZbZplp pZnZpZpZ Z0Z0Z0O0 0Z0OBZ0L Z0M0ZNZ0 PO0Z0OPZ Z0S0J0ZR a

2241 8

b

2243

rZbZ0skZ opZnlpo0 0Z0ZpZ0o Z0Z0Z0Zn 0ZBO0Z0Z Z0M0ZNZ0 PO0Z0OPO Z0SQZRJ0 a

rZbl0skZ o0Z0Zpo0 0onZpm0o Z0Z0Z0A0 0Z0O0Z0Z ZBZ0Z0M0 PO0ZQOPO S0ZRZ0J0 a

2240 8

Isolated pawn, breakthrough by d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbs0Z0Z opZ0Z0lk 0ZnZpZpo Z0Z0ZpZ0 0Z0ONL0Z Z0Z0Z0O0 PO0Z0OBO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2245 8 7 6 5 4 3 2 1

2248

rZ0Z0skZ ZbZ0lpop ponZpZ0Z Z0Z0Z0Z0 PZBOQZ0Z Z0Z0Z0Z0 0O0Z0OPO S0ARZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2250

0ZrZ0skZ o0ZqZpap 0oNZpZpZ Z0Z0Z0Z0 0ZnO0Z0Z Z0A0ZQZ0 PO0Z0OPO Z0S0S0J0 a

c

0lrZ0skZ obZ0apop 0onZpZ0Z Z0Z0Z0Z0 0Z0O0Z0Z O0M0LNZ0 BO0Z0OPO Z0ZRS0J0 a

2247 8

b

2249

rZbs0ZkZ opZ0Zpop 0ZnZpl0Z Z0Z0Z0Z0 0ZBO0Z0Z O0L0A0Z0 0O0Z0OPO S0ZRZ0J0 a

rZ0s0ZkZ ZpSnlpop 0Z0ZpZ0Z oBZ0ZnZ0 Pa0O0AQZ Z0Z0ZNZ0 0O0Z0OPO S0Z0Z0J0 a

2246 8

Isolated pawn, breakthrough by d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srZkZ ZbZ0Z0op po0lpZnZ Z0Z0ZpZ0 PZ0O0Z0a Z0ABM0ZQ 0O0Z0OPO S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2251 8 7 6 5 4 3 2 1

2254

rZbl0skZ o0Z0apop 0onZpm0Z Z0Z0Z0Z0 0ZBO0Z0Z O0M0A0Z0 0O0ZNOPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2256

0ZrZrZkZ ZbZ0ZpZp ponZpapA Z0Z0Z0Zq 0Z0O0Z0Z OBZ0LNZ0 0O0Z0OPO Z0ZRS0J0 a

c

rm0s0ZkZ ZbZ0lpZp pZ0Zpo0A apZ0Z0Z0 0Z0O0Z0Z O0ZQZNZ0 BO0Z0OPO S0Z0ZRJ0 a

2253 8

b

2255

0ZrZ0skZ obZ0apop 0onlpZ0Z Z0Z0Z0Z0 0ZBO0Z0Z OPS0ZNZ0 0A0Z0OPO Z0ZQS0J0 a

rZbZ0skZ o0Z0Zpap 0o0ZpZpZ l0Z0AnZ0 0Z0O0Z0Z ZBM0Z0Z0 PO0L0OPO Z0ZRS0J0 a

2252 8

Isolated pawn, breakthrough by d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrs0ZkZ obl0ZpZ0 0o0apo0o Z0Z0Z0Z0 0Z0O0Z0Z ZBZ0ZNO0 PO0ZQO0O ZRZ0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2257 8 7 6 5 4 3 2 1

2260

rmrZ0ZkZ opZ0lpop 0ZbZpm0Z a0Z0Z0Z0 0Z0O0Z0Z O0M0ZNZ0 BOQA0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2262

0ZrsbZkZ opZqapZ0 0ZnZpZpo Z0Z0Z0Z0 0O0O0ZnZ OBMQA0M0 0Z0Z0OPO Z0S0ZRJ0 a

c

rZ0s0ZkZ opZbapo0 0lnZpZ0o Z0Z0Z0Zn 0ZBO0Z0A Z0M0ZNZ0 PO0ZQOPO Z0SRZ0J0 a

2259 8

b

2261

rm0Z0skZ opZ0lpo0 0Z0Zpm0o a0Z0Z0Z0 0ZBO0Z0Z O0M0ZQZ0 0O0A0OPO S0ZRZ0J0 a

0ZrZ0skZ o0l0apop bo0Zpm0Z Z0Z0Z0A0 0ZnO0Z0Z O0M0ZNZ0 0OBZ0OPO Z0LRS0J0 a

2258 8

Isolated pawn, breakthrough by d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0lrZkZ Zbs0apZp po0ZpmpA Z0Z0Z0Z0 0Z0ONZ0O OBZ0ZQZ0 0O0Z0OPZ Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2263 8 7 6 5 4 3 2 1

2266

rZ0lrakZ ZpZ0Zpop pZnZ0Z0Z Z0ZpZ0Zb 0O0Z0Z0M Z0O0A0O0 PZQZ0OBO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2268

0Z0srZkZ apZ0Zpop pZnl0m0Z Z0ZpZ0Z0 0Z0Z0ZbZ OPM0ONZ0 0A0SBOPO Z0ZQS0J0 a

c

rZbZ0skZ Z0Z0mpop pZ0ZpZ0Z lpZ0M0Z0 PZ0O0Z0Z ZBZ0Z0Z0 0O0Z0OPO S0ZQS0J0 a

2265 8

b

2267

rZ0l0skZ ZbZ0apop pZ0Zpm0Z mpZ0Z0A0 0Z0O0Z0Z ZBM0ZNZ0 PO0ZQOPO Z0ZRS0J0 a

rZbZ0skZ o0Z0apZp 0o0lpmpZ Z0Z0Z0A0 0Z0O0Z0Z O0ZQZNZ0 BO0Z0OPO S0Z0S0J0 a

2264 8

Isolated pawn, breakthrough by d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmbl0skZ opZ0Zpop 0Z0Z0m0Z Z0apZ0Z0 0O0Z0Z0Z O0M0O0M0 0Z0Z0OPO S0AQJBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2269 8 7 6 5 4 3 2 1

2272

0ZrZrZkZ o0l0Z0op 0o0ZpZ0Z Z0ZnZpZ0 0ZPO0Z0A Z0Z0ZQZ0 PZ0Z0OPO Z0S0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2274

0ZrZrZkZ obZ0Zpop 0oqZpmnZ Z0Z0Z0Z0 0ZPO0M0Z O0Z0Z0Z0 0AQZ0OPO Z0S0SBJ0 a

c

0Zrs0ZkZ ZbZnlpap pZ0Z0mpZ Z0opZ0Z0 0Z0Z0Z0Z ZPZ0ONZ0 PA0ZNOPO ZQSRZBJ0 a

2271 8

b

2273

rZ0ZrZkZ ZbZnapo0 pl0Z0m0o Z0opZ0Z0 0Z0Z0Z0A Z0M0ONZ0 POBZQOPO Z0SRZ0J0 a

0ZrsbZkZ opZ0lpop 0Z0ZpZ0Z Z0ZnM0Z0 0Z0O0Z0Z ZBOQZ0Z0 PZ0Z0OPO Z0S0S0J0 a

2270 8

Hanging pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ obZ0apop 0onZpm0Z Z0Z0Z0Z0 0ZPO0Z0Z Z0MBZNZ0 PA0ZQOPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2275 8 7 6 5 4 3 2 1

2278

0srZ0ZkZ o0onZpop 0Z0ZbZ0Z S0ZpZ0Z0 0Z0Z0Z0Z ZNZ0O0O0 PO0Z0OBO S0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2280

rZrZ0ZkZ obZnZpop 0o0Zpm0Z Z0Z0Z0Z0 0Z0O0Z0Z l0OBZNA0 PZ0Z0OPO Z0SQS0J0 a

c

qZrZrZkZ o0ZnZpop Qo0Zpm0Z Z0Z0Z0Z0 0ZPO0Z0A Z0Z0ZNZ0 PZ0Z0OPO Z0S0S0J0 a

2277 8

b

2279

rZbl0skZ o0Z0Zpop 0ZpZ0m0Z Z0ZpZ0Z0 0Z0Z0Z0Z Z0MBO0O0 PO0Z0OPZ S0ZQZRJ0 a

0ZrZrZkZ obZ0lpap 0onZpmpZ Z0Z0Z0Z0 0ZPO0Z0Z Z0Z0MNZ0 PABZQOPO Z0SRZ0J0 a

2276 8

Hanging pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ Z0ZnZpop 0oqZpm0Z Z0Z0Z0A0 pZ0O0Z0Z Z0OQZNZ0 PZ0Z0OPO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2281 8 7 6 5 4 3 2 1

2284

0ZrZrZkZ obZnZpo0 0oqZpm0o Z0Z0Z0Z0 0ZPO0Z0A Z0Z0ZNZ0 PZ0Z0OPO Z0SQSBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2286

rZbZ0skZ o0ZnZpop 0o0Zpm0Z Z0Z0Z0Zq 0ZPO0Z0Z Z0Z0ZNZ0 PZ0ZBOPO S0AQS0J0 a

c

0Zrl0skZ obZ0Zpop 0o0apm0Z m0Z0Z0Z0 0ZPO0Z0Z O0ZBZNZ0 0A0M0OPO Z0SQS0J0 a

2283 8

b

2285

0ZqsrZkZ obZnZpop 0o0Zpm0Z Z0Z0Z0Z0 0ZPO0Z0A Z0Z0ZNZ0 PZ0Z0OPO Z0SQSBJ0 a

rZ0Z0skZ obl0opa0 0o0Z0Zpo Z0Z0Z0Z0 nZPO0Z0Z Z0Z0Z0O0 PZ0ZQO0O ZNSRABJ0 a

2282 8

Hanging pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ opZbZpZp 0Z0ZpapZ Z0Z0Z0Z0 0Z0O0ONZ OBOQZ0Z0 0Z0Z0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2287 8 7 6 5 4 3 2 1

2290

0ZrZ0skZ obl0apop 0o0Zpm0Z Z0Z0Z0Z0 PZPOnZ0Z MQZ0ZNO0 0A0Z0OBO Z0S0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2292

rZ0ZrZkZ ZbZqZpo0 po0ZpZ0o Z0Z0Z0Zn 0ZPO0Z0A Z0Z0ZNZ0 PZ0ZQOPO Z0SRZ0J0 a

c

0ZrZrZkZ obZnZpop 0oqZpm0Z Z0Z0Z0A0 0ZPO0Z0Z Z0ZBZNZ0 PZ0ZQOPO Z0S0S0J0 a

2289 8

b

2291

0ZrZ0skZ oblnZpop 0o0Zpm0Z Z0Z0Z0Z0 0ZPO0Z0Z A0ZBZNZ0 PZ0ZQOPO S0ZRZ0J0 a

rm0l0skZ o0Z0apo0 0o0ZpZ0o Z0ZbZ0Z0 0Z0O0Z0Z Z0OBZNA0 PZ0Z0OPO S0ZQZRJ0 a

2288 8

Hanging pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0s0Z ZblnZpjp po0ZpmpZ Z0Z0M0A0 0ZPO0O0Z Z0Z0Z0Z0 PZBZ0ZPO Z0SRL0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2293 8 7 6 5 4 3 2 1

2296

0ZrZ0s0j Z0Zqapop pobZpm0Z m0Z0Z0Z0 0ZPO0Z0Z O0ZQM0Z0 0A0MBOPO Z0S0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2298

rZ0s0ZkZ obl0apZp 0onZpmpZ Z0Z0Z0Z0 0ZPO0Z0Z O0MBZNZ0 0A0Z0OPO S0ZQS0J0 a

c

0ZrZrZkZ oblnZpo0 0o0Zpm0o Z0Z0Z0Z0 0ZPO0Z0Z Z0ZBZNZ0 PZ0AQOPO Z0S0S0J0 a

2295 8

b

2297

rZ0Z0skZ oblnZpop 0o0Zpm0Z Z0Z0Z0A0 0ZPO0Z0Z Z0ZBZNZ0 PZ0ZQOPO S0Z0ZRJ0 a

rZ0Z0skZ oblnZpop 0o0Zpm0Z Z0Z0Z0A0 0ZPO0Z0Z Z0ZBZNZ0 PZ0ZQOPO S0Z0ZRJ0 a

2294 8

Hanging pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrs0ZkZ Z0lnZpap po0ZpZpZ Z0Z0Z0Z0 PZPO0Z0Z ZQZ0ZBZ0 0A0Z0OPO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2299 8 7 6 5 4 3 2 1

2302

0ZrZ0skZ obZnZpop 0oqZpZ0Z Z0Z0Z0Zn 0ZPO0Z0A Z0ZBZNZ0 PZ0Z0OPO Z0SQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2304

rZ0Z0skZ o0ZnZpop 0o0ZpZ0Z Z0Z0Z0M0 PZPO0Z0Z Z0Z0Z0Z0 0Z0Z0OPO S0Z0ZRJ0 a

c

rZ0Z0skZ obZ0apop 0onZpZ0Z Z0Z0Z0Zq 0ZPO0Z0Z Z0ZBZNZ0 PA0ZQOPO S0Z0ZRJ0 a

2301 8

b

2303

0ZrZrmkZ obZ0Zpop 0oqZpm0Z Z0Z0Z0Z0 0ZPO0Z0Z Z0ZBZNA0 PZ0Z0OPO Z0SQS0J0 a

0ZrZrZkZ o0lnZpop 0o0Zpm0Z Z0ZbZ0Z0 0Z0O0Z0Z O0OBZNZ0 0Z0AQOPO Z0S0S0J0 a

2300 8

Hanging pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrlrZkZ obZ0apop 0o0Zpm0Z m0Z0Z0Z0 0ZPO0Z0Z O0MBZNZ0 0A0Z0OPO Z0SQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2305 8 7 6 5 4 3 2 1

2308

0Zrl0s0Z obZ0Zpjp 0onZpZpZ Z0Z0Z0Z0 0ZPOBZ0Z O0Z0ZNZ0 0ZQZ0OPO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2310

0Zrl0skZ obZnapop 0Z0Z0m0Z Z0opZ0Z0 0Z0Z0Z0Z ZPMBONZ0 PAQZ0OPO Z0ZRZRJ0 a

c

0Z0srakZ oblnZpop 0Z0Z0m0Z Z0opZ0Z0 0Z0Z0Z0Z ZPM0ONOB PA0ZQO0O Z0SRZ0J0 a

2307 8

b

2309

rZ0l0skZ obZ0apo0 0Z0Z0m0o Z0opZ0Z0 0Z0Z0Z0Z Z0MBONO0 PO0ZQOPZ Z0S0ZRJ0 a

0ZrZrZkZ obZ0lpop nZ0Z0m0Z a0opM0Z0 0Z0Z0Z0Z OPZ0O0O0 0A0M0OBO S0ZQZRJ0 a

2306 8

Hanging pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0mkZ obZ0lpop 0Z0a0m0Z Z0opZ0Z0 QZ0Z0A0Z Z0ZNZNO0 PO0ZPOBO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2311 8 7 6 5 4 3 2 1

2314

rZ0Z0skZ obZnlpo0 0Z0Z0Z0o Z0opZ0Z0 0Z0Z0Z0Z O0S0ONZ0 0OQZBOPO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2316

0s0Z0skZ o0Z0Zpop 0Z0ZbZ0Z m0opZ0Z0 0Z0Z0Z0Z ZPZ0ONZ0 PZ0ZBOPO S0Z0ZRJ0 a

c

rZ0ZrZkZ o0Znapop 0lbZ0m0Z ZBopZ0Z0 0Z0Z0Z0Z ZPM0ONZ0 PA0ZQOPO Z0SRZ0J0 a

2313 8

b

2315

rZ0s0ZkZ obZ0ZpZp 0ZnZ0ZpZ l0opZ0Z0 NZ0ZnZ0Z ZPZ0ONZ0 PL0ZBOPO Z0SRZ0J0 a

0s0s0ZkZ obZnZpo0 0l0Z0Z0o Z0opZ0Z0 0Z0Z0Z0Z ZPL0ONZ0 PZRZBOPO Z0ZRZ0J0 a

2312 8

Hanging pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ ZbZ0Zpop 0Z0aqZ0Z o0opZ0Z0 0Z0ZnZ0Z ZPZNO0O0 PA0Z0OBO Z0SQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2317 8 7 6 5 4 3 2 1

2320

0Z0srZkZ obZnlpop 0Z0a0m0Z Z0opZ0Z0 0Z0Z0Z0Z ZPLBONZ0 PA0M0OPO Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2322

0ZrZ0skZ o0Z0Zpop 0Z0Zbm0Z l0opZ0Z0 QZ0Z0Z0Z ZPM0O0Z0 PZ0ZBOPO Z0S0ZRJ0 a

c

0ZrZ0lkZ s0ZnZ0o0 pZ0ZpZ0o Z0opZ0Z0 0Z0Z0Z0Z L0Z0O0Z0 PO0ZBOPO Z0S0ZRJ0 a

2319 8

b

2321

rm0s0ZkZ obZ0lpap 0Z0Z0mpZ Z0opZ0Z0 0Z0Z0Z0Z ZPM0ONZ0 PA0LBOPO Z0SRZ0J0 a

0Zrs0ZkZ obZ0lpZp nZ0Z0ZpZ Z0opZ0Z0 NZ0ZnZ0Z ZPZ0O0O0 PS0Z0OBO Z0SQM0J0 a

2318 8

Hanging pawns

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0Z0skZ obZ0lpop 0Z0Z0m0Z Z0opZ0Z0 NZ0Z0Z0Z O0ZBOPZ0 0O0Z0ZPO ZRAQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2323 8 7 6 5 4 3 2 1

2326

0Z0l0skZ s0ono0ap po0oRmpZ Z0Z0Z0Z0 0Z0O0Z0Z Z0M0ZBZ0 POPZ0OPO S0AQZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2328

0Z0s0Z0Z o0Z0Zrjp 0onlbo0Z Z0Z0m0o0 0Z0ZPZ0Z Z0LPZ0O0 PZRZNMBO Z0ZRZ0J0 a

c

rZbZnZkZ opZ0l0op 0ZpZps0Z Z0Z0MpZ0 0Z0O0Z0Z Z0OBZ0ZQ PO0Z0OPO S0Z0ZRJ0 a

2325 8

b

2327

rZ0ZrZkZ opo0Zpop 0Znm0Z0Z Z0Z0ZbZq 0Z0O0Z0Z Z0O0ZNO0 PS0ZPZBO Z0AQZRJ0 a

rZ0l0skZ Z0Z0a0op bZ0o0m0Z opo0oPZ0 0Z0Z0Z0Z OPOBLNZP 0Z0M0OPZ Z0S0S0J0 a

2324 8

Backward pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ obo0a0op 0o0o0Z0Z Z0ZPZpZ0 0m0Z0Z0Z Z0Z0Z0O0 POQZPOBO S0A0MRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2329 8 7 6 5 4 3 2 1

2332

0Zrs0ZkZ Z0m0lpZp po0o0ZpZ Z0Z0o0Z0 0OPZ0Z0Z O0ZQO0Z0 0Z0M0OPO Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2334

0ZrZ0skZ o0Z0l0op 0mpZ0o0Z Z0MpobZ0 0Z0O0Z0Z Z0Z0O0A0 PO0L0OPO Z0S0ZRJ0 a

c

rZ0s0ZkZ Z0Z0Zpop 0ZpZ0m0Z Z0ZpZ0Z0 0l0Z0ZbZ ZPM0ONZ0 PZ0Z0OPO Z0SQZRJ0 a

2331 8

b

2333

rs0Z0ZkZ o0Z0opap 0o0Z0ZpZ ZRZ0Z0Z0 0Z0Z0Z0Z Z0ZPA0O0 0O0ZPO0O S0Z0Z0J0 a

0s0Z0skZ Z0l0a0op pZ0o0o0Z Z0mRo0ZP 0ZNZ0ZQZ ZPZ0Z0O0 PAPZ0O0Z ZKZ0Z0ZR a

2330 8

Backward pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrskZ opm0o0ap 0ZpZ0Zpm Z0OpZ0Z0 0Z0O0O0Z Z0M0ANOq PO0ZQZ0O Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2335 8 7 6 5 4 3 2 1

2338

rZrZ0ZkZ Z0Z0Zpop 0mpZ0m0Z o0ZpZ0Z0 0Z0OpZ0Z lPM0O0OP PZRZBOQZ Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2340

0Zrs0Z0Z Z0Z0akm0 pZ0opo0o Z0o0Z0o0 0ZPZPO0Z ZPMRZ0OP PA0Z0ZKZ Z0Z0S0Z0 a

c

0Zrs0ZkZ oqZ0opZp 0o0Z0apZ Z0Z0Z0Z0 0Z0O0O0Z Z0O0ZRZ0 PA0Z0ZPO S0Z0L0ZK a

2337 8

b

2339

0Zrl0skZ Z0Z0opap pZ0o0o0Z ZpZNZPZ0 0O0L0Z0Z Z0Z0Z0Z0 PZPZ0OPO S0Z0ZRJ0 a

rZ0lrZ0Z o0ZnZpjp 0ZpZ0ZpZ Z0ZpZ0Z0 0Z0Z0Z0Z ZPZ0Z0O0 PZ0ZPOBO S0ZQZRJ0 a

2336 8

Backward pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZqZ0skZ o0snZpop 0o0Zpm0Z Z0Z0Z0Z0 QZ0O0Z0Z Z0O0ZNZ0 PZ0A0OPO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2341 8 7 6 5 4 3 2 1

2344

0ZrlkZ0s o0Z0mpop 0ZpZba0Z Z0ZpZ0Z0 0Z0Z0Z0Z ZPM0Z0O0 PA0LPOBO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2346

0srZnZ0Z ZpZ0jpZp 0m0obZpZ oNo0Z0Z0 0ZPZ0Z0Z ZPZ0Z0O0 PM0ZPOBO Z0SRZ0J0 a

c

0Z0ZrZkZ o0Zbspo0 0o0l0m0o Z0opZ0Z0 PZ0O0M0Z Z0O0OPZP 0Z0L0JPZ S0Z0SBZ0 a

2343 8

b

2345

rZ0lkZ0s ZbZ0apop pZ0o0m0Z Zpm0oPA0 0Z0ZPZ0Z ZBM0Z0M0 POPZ0ZPO S0ZQJ0ZR a

0Zrl0skZ obZ0ZpZp 0onZpapZ Z0Z0Z0ZP 0Z0O0Z0Z Z0OBZNZ0 PZ0L0OPZ S0A0S0J0 a

2342 8

Backward pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ opl0mpap 0Z0obZpZ Z0Z0o0Z0 0Z0ZPZ0Z Z0O0A0O0 PO0LNOBO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2347 8 7 6 5 4 3 2 1

2350

0s0ZrZkZ ZpoqZpo0 pZ0o0Zno Z0ZPZ0Z0 0Z0ZPZ0Z L0Z0ZBZ0 PO0Z0OPO Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2352

0ZrsbZkZ Z0l0apop 0Z0ZpZ0Z Z0ZpO0Z0 0o0AnZ0Z ZPZQZ0OP 0ZPZ0OBZ Z0SNS0J0 a

c

rZbZ0Z0s opZ0j0op 0ZnZpm0Z Z0ZpZ0Z0 0Z0O0M0Z Z0Z0ZNZ0 PO0J0OPO S0Z0ZBZR a

2349 8

b

2351

rZrZ0ZkZ Z0o0lpZp 0o0o0ZpZ oBZPZ0Zn 0O0ZPZ0Z O0Z0ZPZ0 0Z0L0ZPO Z0SRZ0J0 a

rZ0Z0skZ opZbZ0op 0lnZpm0Z Z0ZpZ0Z0 0Z0O0M0Z Z0ZBZNZ0 PO0L0OPO S0Z0ZRJ0 a

2348 8

Backward pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrs0ZkZ o0l0ZpZ0 0Zpm0ZpZ Z0ZpabZp NZ0Z0Z0Z ZPZ0OPO0 PZ0A0ZBO Z0SQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2353 8 7 6 5 4 3 2 1

2356

0lrZrZkZ o0Znopap 0ZpZ0ZpZ Z0ZpZbZ0 NZ0O0Z0Z ZPA0Z0O0 PZ0LPOBO Z0S0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2358

0ZrlrZkZ o0ZnZpZp bZpZ0ZpA Z0Zpa0Z0 0Z0Z0Z0O Z0M0Z0O0 PO0LPOBZ Z0SRZ0J0 a

c

rZ0ZrZkZ o0o0apop 0Z0Z0Z0Z Z0ZpZ0Z0 0Z0O0Z0Z Z0Z0Z0Z0 PO0Z0OPO S0ARZ0J0 a

2355 8

b

2357

rZbl0skZ o0Z0Z0ap 0mpZpopZ Z0ZpZ0Z0 0Z0O0O0Z Z0M0Z0O0 PO0ZPABO S0ZQZRJ0 a

rZblrZ0Z o0Z0ZpZk 0mpZ0Zpo Z0Apa0Z0 0Z0Z0Z0Z Z0M0Z0O0 PO0LPOBO S0ZRZ0J0 a

2354 8

Backward pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ o0Z0Zpop 0ZpZpm0Z l0ZpZbZ0 0a0O0A0Z ZQM0ONZ0 PO0Z0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2359 8 7 6 5 4 3 2 1

2362

rZ0Z0Z0s o0Znj0op 0ZpZpo0Z Z0ZpZbZ0 NZ0O0Z0Z Z0Z0ONZ0 PO0Z0OPO S0Z0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2364

0Zrl0skZ ZpZnapop pm0obZ0Z Z0ZNo0Z0 0ZPZPZ0Z Z0Z0Z0Z0 PO0M0OPO S0AQSBJ0 a

c

rZ0Z0skZ Zpl0Zpa0 pZnobmpo Z0Z0o0Z0 0Z0ZPZ0A Z0OBM0Z0 PO0MQOPO S0ZRZ0J0 a

2361 8

b

2363

rZ0Z0ZkZ o0Z0spap bZpZ0ZpZ Z0Zpm0Z0 NZ0A0Z0Z Z0Z0Z0O0 PO0ZPOBO S0ZRZ0J0 a

0Z0s0skZ ZpZqZ0o0 pZ0obZno O0ZNonZ0 0OPZ0Z0Z Z0Z0Z0Z0 0ZNLBOPO Z0S0ZRJ0 a

2360 8

Backward pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZ0ZkZ Z0Zbapop 0l0o0m0Z mpZ0o0A0 0Z0ZPZ0Z M0OQZ0Z0 BO0M0OPO S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2365 8 7 6 5 4 3 2 1

2368

0Z0j0Z0Z s0o0spo0 0o0o0m0o o0ZPoBZ0 0Z0ZPZ0O Z0SPZ0O0 PO0Z0O0Z Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2370

rZbZrakZ opZ0o0Zp 0lpZ0mpZ Z0ZpZ0Z0 0Z0O0O0Z L0O0ZNZ0 PO0Z0MPO S0A0S0J0 a

c

rZ0Z0ZkZ opZbm0a0 0l0Zps0o Z0ZpZ0oB 0ZpO0Z0Z Z0O0Z0O0 POQM0OPM S0Z0ZRJ0 a

2367 8

b

2369

rs0Z0ZkZ Z0o0lpop 0o0o0m0a ZPZPo0Z0 0O0ZPZ0Z ZNZQZ0O0 0Z0Z0OBO S0Z0ZRJ0 a

0ZkZrs0Z opobl0Zp 0Z0ZpZpZ m0OpZ0M0 0Z0O0O0O Z0OBZ0L0 PZ0Z0ZPZ Z0Z0SRJ0 a

2366 8

Backward pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0Z0Z oplbZno0 0ZnZps0o Z0ZpM0Z0 0ZpO0Z0O O0O0ZPZB 0ZPZ0SPZ ZRA0L0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2371 8 7 6 5 4 3 2 1

2374

rZ0Z0skZ o0Zbm0o0 0o0ZpZ0o Z0opZ0Z0 PZ0O0l0Z Z0OBZNZ0 0ZPZ0OPO S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2376

0Z0ZrZ0s Zpo0lpj0 nZ0o0mpZ o0ZPZ0Z0 0ZPZPL0Z OPM0S0Zb 0Z0MBZ0O Z0Z0Z0SK a

c

0Z0ZrZkZ opZ0Z0ap 0ZqZ0opZ Z0o0Z0Zn 0ZPZrO0Z Z0ZNO0O0 PZQZ0J0O S0A0S0Z0 a

2373 8

b

2375

0s0Z0skZ Z0oqmpa0 0o0o0ZpZ oPZPo0Zp 0Z0Z0Z0Z O0ZPZ0Ob 0Z0MPO0O ZRAQS0JB a

0ZnsrZkZ ZpZbZpop 0ZpZnZ0Z o0ZpZ0Z0 PZ0O0O0Z ZPZBO0M0 0Z0MRZPO Z0S0Z0ZK a

2372 8

Backward pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0s0j opaqm0op 0Z0Zno0Z ZPo0o0Z0 0ZPZNZ0M O0ZPZ0O0 0A0ZQO0O Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2377 8 7 6 5 4 3 2 1

2380

rZ0Z0skZ o0Z0ZpZp 0Z0Z0lpZ Z0mPZ0Zn 0SNZ0Z0Z Z0Z0Z0ZP 0Z0Z0OPZ ZBZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2382

rZ0lrZkZ ZpZnapo0 0Z0Z0ZpZ o0ZPo0Z0 PmBZ0A0Z Z0M0Z0Z0 0O0ZQOPO Z0ZRS0J0 a

c

rZ0ZrakZ ZnlbZpon 0ZBo0Z0o Z0oPoNZ0 0O0ZPZ0Z Z0Z0ZNZP 0Z0A0OPZ S0ZQS0J0 a

2379 8

b

2381

rZqZ0skZ opZ0Zpo0 0ZpZpa0o Z0ZPZbZ0 0ZPZ0Z0Z ZQZ0Z0O0 PO0Z0OBO S0A0ZRJ0 a

0Z0Z0akZ oNZ0ZpZ0 0Z0Z0Z0o ZpOns0oP 0Z0Z0Z0Z O0Z0Z0OB rZ0Z0O0Z Z0SRZ0J0 a

2378 8

Passed pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sbZrmkZ Z0l0Zpo0 0Zpo0a0o Z0Z0o0Z0 NOPZPZ0Z Z0ABZ0Z0 0ZQZ0OPO Z0Z0SRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2383 8 7 6 5 4 3 2 1

2386

rZ0Z0skZ oqZ0Zpap no0Z0ZpZ Z0oPZ0A0 QZ0Z0Z0Z Z0Z0ZNZ0 PZ0Z0OPO ZRZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2388

0ZrsnZkZ obZnZpo0 0o0ZpZ0o Z0Z0Z0Z0 0ZPONA0Z Z0Z0ZPZ0 PZ0Z0ZPO Z0SRZBJ0 a

c

0Z0srZkZ obZ0ZpZp 0onZpapZ Z0Z0Z0Zq 0ZPO0Z0Z O0ZQZNZP 0ZBZ0OPZ Z0ARS0J0 a

2385 8

b

2387

0Z0l0Zrj ZpZ0ZpZp 0mpA0ZpL Z0Z0OpZ0 0Z0Z0O0Z Z0ZRZ0Z0 0Z0Z0OKO Z0Z0Z0Z0 a

rZ0ZrZkZ ZbZnZpop pZ0Z0Z0Z A0Z0Z0Z0 0ZPM0Z0Z Z0Z0Z0Z0 0Z0Z0OPO S0S0Z0J0 a

2384 8

Passed pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0arZkZ opZblnZp 0Z0o0opZ O0ZPZ0Zn 0O0APO0Z ZQM0ZNZP 0Z0Z0ZBZ Z0S0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2389 8 7 6 5 4 3 2 1

2392

0ZrZ0skZ o0Z0Zpop 0o0Z0Z0Z m0ZPZQZ0 0Z0Z0Z0Z Z0Z0ZNZ0 PZqZ0OPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2394

rZ0Z0skZ opZ0opZp 0mbo0ZpZ Z0Z0Z0Z0 0OPZPZ0Z Z0M0ZPZ0 PZ0ZBZPO Z0S0ZRJ0 a

c

rZ0l0skZ opZnZpap 0Z0Z0mpZ Z0oPo0Z0 0ZBZ0Z0Z Z0M0OQZP PO0Z0OPZ S0ARZ0J0 a

2391 8

b

2393

rZ0Z0Z0j o0ArZpop 0onZpl0Z mNZ0Z0Z0 0Z0OPZ0Z Z0Z0Z0L0 0Z0Z0OPO ZRZRZ0J0 a

rmbZkZrZ opZ0mpZQ 0Z0Zpl0Z Z0ZpZ0Z0 0Z0Z0A0Z O0oBZ0Z0 0ZPZNOPO S0Z0J0ZR a

2390 8

Passed pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ l0Z0ZpZp pZ0o0ZpZ Z0mPZ0Z0 0ZRZPO0Z ZpZBZ0ZP 0O0L0ZPJ Z0S0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2395 8 7 6 5 4 3 2 1

2398

rZ0ZkZ0s obZ0Zpo0 0ZpZqmno Zpo0O0Z0 QZNZ0Z0A Z0OBZPZ0 PZ0Z0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2400

0Z0s0skZ opZ0Zpop 0Z0Z0a0Z Z0ZPZ0Z0 0Z0Z0A0Z Z0Z0Z0Z0 Pl0Z0OPO Z0SQZRJ0 a

c

qZ0Z0skZ obZ0apop 0o0ZpZ0Z Z0ZPZ0Z0 PZ0ZPZ0Z Z0ZQZNZ0 0Z0Z0OPO A0ZRZ0J0 a

2397 8

b

2399

0Zrs0Z0Z Z0Z0jpo0 0Z0obm0o opl0o0Z0 0Z0ZPO0Z O0M0S0OP 0OPL0ZBJ Z0ZRZ0Z0 a

0Z0Z0mkZ opZ0Zpop 0ZpZrm0Z Z0Z0Z0Zq 0ZPO0Z0Z Z0Z0ZNO0 PAQZ0OPZ Z0ZRZ0J0 a

2396 8

Passed pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblrZkZ ZpZ0Zpap pZ0Z0mpZ Z0mPZ0Z0 PZNZ0Z0Z Z0M0Z0Z0 0O0ZBZPO S0AQZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2401 8 7 6 5 4 3 2 1

2404

0ZrZ0skZ obZ0ZpZp 0onZplpZ Z0Z0Z0Z0 0ZPO0Z0Z O0ZQZNZ0 BZ0Z0OPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2406

rZba0skZ opZ0Zpo0 0Z0Z0Z0o Z0ZPo0Z0 0Z0ZNZ0Z Z0Z0Z0L0 qO0ZBOPO Z0ZRZRJ0 a

c

0Z0srZkZ o0Z0Zpop 0onZqZ0Z Z0a0O0Z0 0Z0oQO0Z ZPZ0ZNO0 PZ0A0ZKO S0Z0S0Z0 a

2403 8

b

2405

rZbl0skZ o0Z0apop 0o0Z0Z0Z Z0ZPZ0Z0 0m0Z0Z0Z Z0Z0ZNO0 PZ0Z0OBO S0AQZRJ0 a

0ZrZ0skZ Z0Z0Zpo0 pa0Z0Z0o ZpZ0OqZ0 0L0o0Z0Z Z0Z0Z0AP PO0Z0OPZ Z0S0S0J0 a

2402 8

Passed pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0skZ obZ0lpo0 0Z0Znm0o Z0o0Z0Z0 0Z0oPO0Z O0Z0Z0ON 0OQZ0ZBO Z0ARS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2407 8 7 6 5 4 3 2 1

2410

rZ0s0ZkZ Z0Z0Zpap 0Z0l0ZpZ Z0Z0Z0Z0 PoRo0Z0Z ZPZ0ZNZP 0Z0ZQOPZ Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2412

rZ0l0s0Z Z0Z0Z0jp 0o0Z0ZpZ oBmpZ0Z0 0Z0Z0ZPZ ZPZ0ZPZ0 PZ0Z0Z0O Z0SQZRZK a

c

rZ0Z0skZ opZ0Z0op 0ZnlpZ0Z Z0a0Z0Z0 0ZPoBZ0Z Z0Z0Z0O0 PO0Z0O0O S0AQS0J0 a

2409 8

b

2411

0Zrl0skZ ZbZ0Zpop 0Z0Z0a0Z o0ZpZ0Z0 0Z0Z0A0Z ZNZ0Z0Z0 PO0L0OPO S0Z0S0J0 a

rZ0l0skZ ZpZ0Zpo0 0ZnZ0Z0o Z0Z0mbZ0 paPoNA0O M0Z0Z0O0 PO0Z0OBZ S0ZQZRJ0 a

2408 8

Passed pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opZ0Z0ap 0Z0opZpZ Z0m0ZnZ0 0ZPZ0Z0Z Z0M0ZPZ0 PO0ZBZPO S0A0LRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2413 8 7 6 5 4 3 2 1

2416

0ZrsbZkZ o0Z0lpZp QonZpapZ Z0Z0Z0Z0 0ZPOBA0Z O0Z0ZNZP 0Z0Z0OPZ ZRZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2418

0Z0a0Zrj Z0ZPZ0op 0Z0Z0Z0Z o0L0Z0Z0 0Z0ZpZ0Z Z0Z0Z0Z0 PO0o0oPO Z0ZRlRZK a

c

rZ0ZrZkZ opZ0Zpap 0Z0Z0lpZ m0ZPZ0Z0 0L0Z0A0Z Z0ZBZPZ0 0Z0Z0ZPO Z0SRZ0J0 a

2415 8

b

2417

rmblka0Z opZ0opo0 0ZpZ0Z0Z Z0Z0A0Z0 0Z0O0Z0Z Z0Z0Z0o0 POPZ0OPs S0ZQJBMR a

0s0Z0ZkZ oBa0Zpop 0Z0Z0l0Z OPZ0Z0Z0 0A0O0Z0Z Z0Z0L0O0 0ZrZ0O0O Z0ZRZ0J0 a

2414 8

Passed pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ o0ZnZpop 0o0Z0Z0Z l0O0Z0A0 0ZQZ0Z0Z Z0Z0ONZ0 PZ0Z0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2419 8 7 6 5 4 3 2 1

2422

rmrZ0Z0Z Z0Zpl0jp bZ0ZpopZ Z0Z0Z0Z0 0OBZ0M0Z Z0L0O0Z0 0Z0Z0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2424

rZ0Z0skZ opZ0Zpo0 0lpO0mpZ Z0Z0Z0Z0 PmBZ0ZPZ Z0M0Z0ZP 0O0ZQO0Z Z0ZRS0J0 a

c

rZ0Z0skZ o0o0ZpZp 0Z0O0Z0Z Z0mPZ0o0 0Z0Z0A0Z Z0Z0Z0O0 PZ0Z0O0O ZRZ0ZBJ0 a

2421 8

b

2423

0s0Z0skZ Z0l0apop 0Z0Z0m0Z O0m0o0Z0 RZBZpZ0Z ZNZ0A0Z0 0Z0ZQOPO S0Z0Z0J0 a

0Z0Z0akZ Z0Z0Z0op 0Z0ZqZ0Z ZPZ0ZpZ0 PZ0Zpm0Z Z0Z0Z0Z0 NZQZ0ZPO Z0Z0Z0AK a

2420 8

Passed pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0ZkZ o0Z0lpo0 0o0Z0m0o Z0O0Z0Z0 PZQZpZ0Z A0O0O0ZP 0Z0Z0OPZ Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2425 8 7 6 5 4 3 2 1

2428

rZ0lrZkZ Z0ZnZpZp 0Z0OpZpZ Z0ZbZ0Z0 pZ0Z0Z0Z O0Z0Z0Z0 0Z0M0OPO Z0SQSBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2430

0Z0ZrZkZ Z0Z0ZpZp 0Z0l0ZpZ ZpZPZ0Z0 0O0Z0Z0Z Z0o0Z0ZP 0ZQZnOBZ Z0Z0SKZ0 a

c

rZ0lrakZ opZ0ZpZp 0Z0Z0mpZ Z0mPZbZ0 0ZNZ0A0Z L0M0ZBZ0 PO0Z0ZPO S0Z0ZRZK a

2427 8

b

2429

0mksrZ0Z opo0L0Z0 0Z0Z0Z0o l0ZPZ0Z0 0ZBZpZ0O Z0O0Z0Z0 PO0Z0ZPZ Z0JRZ0ZR a

0Z0Z0ZkZ Z0Z0Z0o0 0Z0ZRa0o o0Z0Z0Z0 ro0ZPM0Z Z0O0Z0O0 0O0Z0Z0O Z0Z0Z0J0 a

2426 8

Passed pawn

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZqskZ m0mbapop 0Z0ZpZ0Z Z0OpZ0Z0 0O0M0Z0Z Z0M0Z0O0 0Z0Z0O0O ZRAQSBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2431 8 7 6 5 4 3 2 1

2434

rZ0Z0skZ opZnZpo0 0Z0Z0l0o Z0oPZ0Zb 0ZPZPZ0Z ZPL0Z0Z0 PZ0M0OPO Z0Z0SRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2436

rZ0l0Z0s Z0Zbapj0 0m0o0ZpZ o0oPo0O0 0mPZPZ0Z Z0Z0MNA0 0O0LBOKZ S0Z0Z0ZR a

c

rZblnakZ opZ0Z0s0 0Z0o0ZnZ ZNZPo0op PO0ZPo0Z Z0Z0ZPZ0 0ZQABMPO Z0S0ZRJ0 a

2433 8

b

2435

0Z0ZrZ0Z Z0Z0okZ0 0o0o0ZNs Z0oPOPZ0 PoPa0O0o ZPZBZ0ZK 0Z0ZRZ0Z Z0Z0Z0Z0 a

rm0Z0skZ o0Z0Z0o0 bo0l0o0o Z0ZPM0ZQ 0Z0o0O0Z O0Z0Z0O0 0O0Z0ZBO S0ZRZ0J0 a

2432 8

Phalanx

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0Z0j o0Obl0Zp 0Z0Z0ZpZ Z0ZPo0Z0 0ZQo0ZPZ Z0Z0a0ZP PO0ZBZKZ S0Z0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2437 8 7 6 5 4 3 2 1

2440

rZbZnanj opo0l0Zr 0Z0o0Zpo ZNOPo0O0 0O0ZPo0O Z0ZNZPZ0 PZ0ABZKZ Z0SQZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2442

rZbl0snj opZ0Zpap 0Z0o0mpZ ZNoPo0Z0 0ZPZPZ0Z Z0ZNA0Z0 PO0ZBOPO S0ZQZRJ0 a

c

0ZbsrakZ Z0Z0Zpo0 pZ0Z0l0o Z0ZPo0Z0 0ZpZPZ0O SPZ0Z0O0 0AQZBO0Z Z0Z0S0J0 a

2439 8

b

2441

0ZnZrZ0Z s0ZblkZ0 0o0Z0apo o0oPo0o0 PZPZPZPZ ZRZNZPZP 0L0ZBAKZ Z0S0Z0Z0 a

0s0l0skZ Z0ZnZ0Z0 0Z0o0opZ o0OPonZp 0Z0o0O0A Z0Z0Z0Z0 POQZBZPO ZKZRZRZ0 a

2438 8

Phalanx

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zkl0s0s Z0ZbS0Zp pZ0o0O0a Z0mPZ0Z0 0o0M0Z0Z Z0Z0ZQZ0 POPZ0Z0O ZKZRZBZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2443 8 7 6 5 4 3 2 1

2446

0s0s0Z0Z Z0l0m0jp po0oPo0Z Z0o0ZPo0 0O0ZPZPZ Z0Z0Z0L0 PZ0S0ZBO Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2448

0sbZrZkZ Z0Z0Z0Zp pm0oPZpZ ZpoPZpZn qZ0Z0O0M Z0OQZ0O0 0Z0ZRZBO Z0A0S0ZK a

c

0ZqZrskZ ZpZnZ0a0 pZ0O0ZpZ O0O0ZpZ0 0Z0Z0ZpZ Z0Z0Z0Z0 0Z0ZBAPO Z0SQZRJ0 a

2445 8

b

2447

0Z0Z0skZ sbZnl0Zp pZ0ZpZpZ ZpZpO0Z0 0Z0O0Z0Z Z0ZBZ0O0 POQZNO0Z Z0S0ZRJ0 a

0ZrZkarZ S0ZbZ0Zp 0o0A0ZpZ ZNZpOPZ0 0Z0O0O0Z Z0ZQZ0MK 0l0Z0Z0O Z0Z0Z0Z0 a

2444 8

Phalanx

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sbZ0skZ Z0l0Zpap pZ0o0mpZ S0mPo0A0 0O0ZPZ0Z Z0ZBZ0M0 NZQZ0OPO Z0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2449 8 7 6 5 4 3 2 1

2452

rZbZrZkZ opZnZpZp 0apo0ZpZ Z0ZNZ0Z0 0OPZPAPZ Z0Z0Z0O0 PZ0Z0OBZ S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2454

rZbZkZ0s o0Z0Zpo0 0ZPZ0l0o Z0ZPZ0Z0 0aQZ0Z0Z Z0Z0ZNZ0 0O0ZpOPO S0Z0ZRJ0 a

c

rZ0Zka0s Z0Z0Zpop bZqopZ0Z o0ZnO0Z0 0ZPZ0Z0Z Z0ZQZNZ0 PZ0ZNOPO S0ARZ0J0 a

2451 8

b

2453

0s0Z0skZ Z0ZqZpap pZ0Z0mpZ Z0OPZ0Z0 0o0Z0Z0Z Z0MQZ0OP 0Z0A0OKZ Z0S0S0Z0 a

rZ0ZkZ0s o0Znl0Z0 0o0opZ0Z Z0o0Zpop 0OPONZ0Z O0Z0O0O0 0Z0Z0ZPO S0ZQZRJ0 a

2450 8

Phalanx

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrm0Z o0l0Zpmk 0ZpZ0Zpo ZpO0Z0Z0 0Z0ZPZ0Z Z0M0ZNOP PL0Z0OBZ Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2455 8 7 6 5 4 3 2 1

2458

rZnZ0ska ZpZqZ0mp 0Z0o0ZpZ o0oPo0O0 PZPZPo0O Z0MNZPZ0 0O0L0Z0Z Z0JRZ0AR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2460

rZbZ0a0s opZnZkop 0Z0O0Z0Z Z0Z0O0Z0 0Z0Z0Z0Z Z0Z0Z0Z0 PO0O0OPO S0A0J0MR a

c

0Zrl0skZ ZpZ0Zpop 0o0O0Z0Z o0ZNO0a0 PmQZ0ZPZ Z0Z0ZNZP 0ZbZBO0Z S0Z0ZRJ0 a

2457 8

b

2459

rZ0l0Z0j o0Z0Z0Zp 0o0O0ZpZ Z0oQOrZ0 0Z0m0Z0Z Z0Z0ZPZ0 PZ0ZBO0Z Z0ZRJ0ZR a

rZqZkZ0s o0Znapop 0o0ZpZ0Z Z0ZpO0Z0 0OpO0M0Z OnO0Z0ZQ 0Z0ZNOPO ZRA0ZRJ0 a

2456 8

Phalanx

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0Z0j o0Z0Z0ap 0ZQZ0ZpZ Z0oPZrZ0 qZPo0Z0Z OpZ0ZNZP 0O0Z0ZPZ ZKZRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2461 8 7 6 5 4 3 2 1

2464

rZ0ZrZkZ Z0ZqZpop 0Z0Z0m0Z ZpopO0Z0 pZ0O0Z0Z OnO0ZPO0 RZQZ0JBO Z0A0S0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2466

0Zks0Z0s Z0Z0Z0op pZ0Z0a0Z Z0Z0Z0Z0 pA0o0Z0Z ZNo0Z0Z0 0Z0Z0OPZ S0Z0ZRJ0 a

c

0Z0Z0Z0Z o0Z0lpZk 0Z0o0Z0O Z0Z0spa0 0Z0Z0ZpZ ZNO0o0L0 PZPZ0Z0Z ZKZRZ0ZR a

2463 8

b

2465

rZbZ0skZ Z0Z0Apap pZ0Z0ZpZ ZpoPZ0Z0 0Z0oPZ0Z Z0Z0ZPZ0 PO0S0ZPO ZKZ0ZBZR a

rZbZ0skZ opZ0Zpo0 0m0Z0m0o Z0oPZ0Z0 0lPLPZ0Z Z0Z0ZNZ0 PO0M0OPO S0Z0ZRJ0 a

2462 8

Phalanx

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ Z0Z0Zpo0 0o0Z0Z0o Z0o0m0lP 0o0Z0Z0Z ZNZ0Z0ZQ 0sPZROPZ Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2467 8 7 6 5 4 3 2 1

2470

0Z0s0Z0Z Z0Z0ZkZp 0Z0ZpZpZ Z0Z0O0Z0 0o0m0O0Z s0o0J0O0 PZBZ0S0O ZRZ0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2472

rZ0l0skZ Z0Z0Zpap 0Z0opZpZ o0o0Z0Z0 QmPZPO0Z O0Z0ZRZP 0Z0ANZPZ ZRZ0Z0J0 a

c

0ZrZrZ0j Z0Z0Z0ap 0Z0o0ZpZ o0ZPZ0A0 0ZpZPZ0Z ZpZ0MPZR 0Z0Z0JPZ Z0Z0Z0ZR a

2469 8

b

2471

0s0ZrZkZ Z0Z0ZpZp 0Z0ObZ0Z ZpZ0Z0A0 0ZpZ0ZpZ Z0Z0Z0Z0 0aBZ0ZPO Z0ZRZRZK a

0Z0Z0Z0Z ZbZ0Z0o0 pj0a0o0o ZpZPZ0Z0 0ZpZ0Z0Z Z0O0ZBZ0 0Z0Z0OPO S0Z0J0Z0 a

2468 8

Phalanx

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ obZ0Zpo0 0Z0o0Z0o lpmnZ0Z0 0ZpM0Z0A Z0O0OBZ0 PZQZ0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2473 8 7 6 5 4 3 2 1

2476

0Z0lrZkZ Z0Z0apZp rZ0ZbZpZ ZpZ0Z0Z0 0ZpZBZ0Z o0A0ZNZP 0Z0ZQOPZ S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2478

0s0Z0skZ Z0Z0Z0Zp pZ0ZqZ0Z ZpopZpZ0 0Z0ZnL0M Z0O0ZPO0 PZ0Z0ZBO Z0Z0S0J0 a

c

rZ0Z0skZ Zpo0m0a0 0Z0o0Z0Z o0ZPo0Zq 0ZPZPo0Z ZQJ0ZNo0 PO0ZBAnZ S0SNZ0Z0 a

2475 8

b

2477

0Z0Z0Z0Z ZpZ0o0jp 0ZpZ0ZpZ Z0Z0o0Z0 0Z0ZbOPZ S0Z0Z0ZP 0L0Z0Z0J Z0Z0ZqZ0 a

nZ0Z0Z0Z Z0Z0Zpj0 rZ0Z0a0o ORZ0ZpZ0 0ZpZ0A0Z ZpZ0S0ZP 0Z0Z0ZPZ Z0Z0ZKZ0 a

2474 8

Phalanx

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZkZ o0Z0Zpa0 0m0Z0ZpZ Z0Z0Z0Z0 PA0Z0ZpO ZBM0ZpZ0 0JPZ0Z0Z Z0Z0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2479 8 7 6 5 4 3 2 1

2482

rZbZ0skZ o0o0Z0op 0Z0Z0Z0l Z0ZpOpZ0 0Z0Z0Z0Z Z0Z0Z0Z0 POPZ0L0Z SNAKZBZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2484

0ZbZ0Z0Z ZrZ0Z0Z0 0ZkApZpZ o0ZpO0O0 0ZpO0Z0Z ZpO0Z0J0 0S0Z0O0Z Z0Z0Z0Z0 a

c

0Z0s0Z0Z opo0Z0Zp 0apZkZ0Z Z0Z0opZ0 0Z0Z0Z0Z APO0Z0Z0 PZ0MKorO S0Z0ZRZ0 a

2481 8

b

2483

0Z0s0Z0Z Z0Z0ZpZk 0Z0ZpZ0Z ZRZ0Z0ZP 0ZpZ0Z0Z Z0o0Z0Z0 0o0Z0Z0Z Z0Z0S0J0 a

0Z0Z0Z0Z oBa0s0j0 Po0Z0opZ ZPoRm0Zp 0ZPZ0Z0O ZKO0A0O0 0Z0Z0Z0Z Z0Z0Z0Z0 a

2480 8

Phalanx

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblkZ0s Z0Z0a0op 0ZpZ0Z0Z Z0opOpZ0 0ZPZnZ0Z Z0M0ZNZ0 PO0ZQOPO S0ARZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2485 8 7 6 5 4 3 2 1

2488

rZ0l0akZ ZbZnZ0o0 pZ0o0Z0o ZponZPZ0 PZ0Z0Z0Z Z0Z0Z0ZP 0O0Z0OPZ SBAQMNJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2490

0Z0s0ZkZ Z0s0ZpZ0 0opl0ZpZ ZbZnM0Z0 0O0O0ZBZ Z0Z0Z0Z0 0Z0L0OPZ ZRZ0S0J0 a

c

0jrZ0s0Z ZpZ0l0Zp pZ0o0apL Z0ZBo0Z0 0Z0ZPZ0Z O0Z0Z0Z0 0OPZ0ZRO ZKZRZ0Z0 a

2487 8

b

2489

rZblrZkZ o0Z0Zpop 0onZ0m0Z Z0opZ0Z0 0Z0O0Z0Z O0OBOPZ0 0Z0ZNZPO S0AQZRJ0 a

rZblrZkZ opopZpop 0Z0Z0Z0Z Z0a0m0Z0 0ZPZ0Z0Z ZPM0O0Z0 PZ0ZBOPO S0AQZRJ0 a

2486 8

Rook manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0skZ o0Z0Zpop blpZpZ0Z ZpZnO0Z0 0O0Z0Z0Z Z0Z0ZQOP 0APZ0OBZ S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2491 8 7 6 5 4 3 2 1

2494

rZ0Zka0s ZplbZpop pZ0o0m0Z Z0Z0o0Z0 0Z0SPOPZ Z0M0AQZ0 POPZ0Z0O Z0J0ZBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2496

rZbl0s0Z oponZ0Zk 0Z0Z0Z0a Z0ONopo0 0OBZ0Z0Z Z0Z0Z0Z0 PZ0Z0OPO ZRAQS0J0 a

c

0l0Z0Z0Z s0MrZpjp po0OpmpZ Z0ZbL0Z0 0Z0Z0Z0Z Z0Z0ZNZ0 PO0Z0OPO Z0SRZ0J0 a

2493 8

b

2495

0Z0ZrZkZ Z0Z0Zpo0 0Z0Z0s0Z Z0l0Z0Z0 PZnZpZ0Z Z0SbZ0O0 0Z0Z0OBZ S0L0A0J0 a

rZbs0ZkZ opZ0apo0 0Z0Zpm0o Z0l0M0Z0 0ZPZ0Z0A Z0ZBZ0Z0 PO0ZQOPO S0Z0ZRJ0 a

2492 8

Rook manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrmkZ ZbZ0apop pl0Zpm0Z ZpZpM0A0 0Z0O0Z0Z O0OBZ0ZQ 0O0M0OPO Z0Z0SRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2497 8 7 6 5 4 3 2 1

2500

0s0ZnskZ Z0l0apop pZbo0Z0Z ZpZ0OpZ0 0Z0A0Z0Z O0MBZ0L0 0OPZ0ZPO Z0Z0SRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2502

0Zrj0Z0s ZpZnZpo0 pZpApZbo O0OpZ0Z0 0Z0O0Z0Z Z0Z0OPZP 0O0Z0ZPZ S0Z0JBZR a

c

rZ0lrm0j Z0Z0Z0ap no0O0opZ o0o0oPZ0 PZQZNZ0O Z0Z0Z0M0 0O0Z0ZPZ S0ARZ0J0 a

2499 8

b

2501

0sblrZkZ o0Z0Zpop 0Zpa0m0Z Z0opZ0Z0 0Z0Z0Z0Z ZPZPO0Z0 PA0ZBOPO SNZQZRJ0 a

0sqZrZkZ oponZpop 0a0Z0Z0Z Z0Z0o0Z0 0Z0Z0ZbZ ZPZPZNO0 PA0ZPOBO Z0SQS0J0 a

2498 8

Rook manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ opZ0Zpop 0Z0Z0m0Z ZPZpZnZ0 0Z0Z0Z0Z Z0M0O0Z0 0O0ZBOPO S0AQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2503 8 7 6 5 4 3 2 1

2506

0sblnskZ Z0ZnZpZ0 po0o0ZpZ Z0ZPo0Zp PZNZPZ0Z Z0M0L0Z0 0O0ZBOPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2508

0j0a0Zrs opZqmbZ0 0Z0Z0Z0Z Z0OpZpO0 0L0O0Z0o Z0Z0Z0ZP PZ0ZNZBZ ZRA0ZRJ0 a

c

0Zrl0skZ ZpZ0apop pZbZpm0Z Z0Z0M0A0 0m0O0Z0Z Z0M0Z0Z0 PO0Z0OPO ZBSQS0J0 a

2505 8

b

2507

rZbs0ZkZ o0Z0a0op 0Zpo0o0Z l0Z0Z0Z0 0ZPZPL0Z ZPM0Z0Z0 PA0Z0ZPO Z0ZRZRJ0 a

rZ0lkZ0s ZpZ0ZpZ0 pZ0o0ZnA Z0ZPa0Z0 0Z0Z0Z0Z Z0O0Z0Z0 PO0LBZ0O S0ZKZ0S0 a

2504 8

Rook manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZrZ opl0Z0Z0 0ZnZpZnZ Z0ZpZpAQ bZ0O0Z0Z O0O0Z0Z0 0Z0ZNOPO S0Z0JBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2509 8 7 6 5 4 3 2 1

2512

rZ0Z0skZ Z0Z0apop bZ0Zpm0Z ZpZqM0A0 0Z0o0O0Z Z0ZBZ0Z0 PO0ZQZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2514

rZ0ZkZ0s ZqZ0Zpop pZ0ZpZ0Z ZNZbO0Z0 0a0Z0Z0Z ZPZ0A0Z0 0OPZ0LPO S0Z0ZRJ0 a

c

rZqZ0skZ oponZpop 0Z0Z0Z0Z Z0ZPA0Z0 0ZNZ0Z0a ZQO0Z0Z0 PO0Z0ZPO S0Z0ZRJ0 a

2511 8

b

2513

0Z0ZrZkZ ZqZnopZp po0Z0mpa Z0s0Z0Z0 0Z0Z0Z0Z ZPM0ONO0 PZ0ZQOKO A0SRZ0Z0 a

rZbZ0skZ opZ0mpop 0a0ZpZnZ Z0Z0O0M0 qZ0Z0Z0Z Z0ZBZNL0 PO0A0OPO S0Z0ZRJ0 a

2510 8

Rook manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0s0j Zpo0Z0ap 0Z0Z0Z0Z o0ZPonO0 0ZPZNo0O Z0Z0ZPZ0 PO0ZBZNZ S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2515 8 7 6 5 4 3 2 1

2518

rZ0ZqskZ obo0Zpa0 no0ZnZpo Z0Z0o0Z0 0OPZPZ0Z O0M0ANZP 0Z0Z0OPZ S0ZQSBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2520

rZ0lrZ0Z oponZpak 0Z0o0Z0o Z0Z0ZPZ0 0ZPmPA0Z Z0M0Z0Z0 PO0L0ZBO Z0S0ZRJ0 a

c

rZblnskZ Z0Z0Zpap nZ0o0ZpZ oNoPo0Z0 PZPZPZPZ Z0Z0Z0Z0 0Z0ABO0O S0ZQMRJ0 a

2517 8

b

2519

rZ0Z0skZ Z0mqZpan 0o0o0Zpo o0oPo0Z0 0ZPZPZ0M O0M0Z0O0 0O0A0O0O S0ZQZRJ0 a

rZbl0skZ opo0Z0ap 0Z0o0Z0m Z0ZPo0o0 0ZPZPmPZ Z0M0ZPZ0 PO0MBA0Z S0ZQJ0ZR a

2516 8

Rook manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZkZ0s ZbZ0apop pZ0opZ0Z Z0Z0Z0O0 0l0MPO0O Z0Z0Z0Z0 0OPZQZBZ ZKZRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2521 8 7 6 5 4 3 2 1

2524

rZ0Zka0s ZpZ0Zpo0 pZ0Z0Z0o Z0ZpOPZ0 0ZqZnZ0Z O0M0ZQZ0 0OPZ0A0O S0Z0J0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2526

0s0lkZ0s Z0ZbapZ0 0Z0ZpZpZ ZpmpO0Zp pZ0M0O0Z O0O0A0Z0 0O0ZBZPO Z0SQZRZK a

c

rZ0ZrZkZ ZblnZpop pZ0apZ0Z Z0ZPZ0O0 NZ0Z0O0Z Z0Z0ABZ0 PO0Z0Z0O S0ZQZRJ0 a

2523 8

b

2525

0s0s0ZkZ ZqZ0ZpZp pZ0ZpZpL ZpZnZ0Z0 0Z0Z0Z0Z Z0O0ZNZP PO0Z0OPZ Z0ZRS0ZK a

rZ0l0j0s ZpZbapZ0 0mnZpZpZ o0ZpO0Zp 0Z0O0O0Z OPZBZNZ0 0Z0ZNZPO S0AQZRZK a

2522 8

Rook manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ opZ0Zpo0 0Z0Z0Z0o Z0ZpO0Z0 0Z0O0ZbZ Z0O0ABl0 PZ0ZPZ0Z ZRL0S0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2527 8 7 6 5 4 3 2 1

2530

rZ0Z0Z0s Z0oRZbj0 0o0ZqZ0o mQZ0o0Z0 pZPZPoPZ O0O0ZPZ0 0Z0ZBA0S ZKZ0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2532

rmbZkZ0s o0ZpZplp 0o0O0Z0Z Z0o0Z0Z0 0Z0Z0Z0Z Z0Z0Z0Z0 PZ0MPOPO Z0SQJBZR a

c

rZ0Z0Z0j o0Z0Z0Z0 0ZPM0Zrm Z0Opo0Z0 0Z0m0Zpl Z0S0Z0Z0 PZ0ZBOPZ Z0ZQZRJ0 a

2529 8

b

2531

rZ0ZrZkZ opZbZpZp 0Z0Z0o0Z l0ZpZ0Z0 0apO0ZPO Z0M0O0Z0 POQZ0O0Z ZKZRZBZR a

0ZrZ0ZkZ L0ZpZpap bZ0ZpZpZ l0Z0O0Z0 0Z0A0Z0Z Z0Z0Z0Z0 PZ0Z0OPO S0Z0Z0JR a

2528 8

Rook manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZrZkZ ZplbZpZ0 pZ0o0Zpo Z0ZPo0a0 PZ0Z0ZPZ ZQO0ZPO0 0O0Z0A0Z S0Z0SBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2533 8 7 6 5 4 3 2 1

2536

0s0ZrZkZ m0Zbo0Zp 0Z0l0opL Z0oPM0Z0 Po0Z0ZPZ ZPZ0Z0Z0 0A0Z0OBO Z0Z0S0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2538

rZ0ZkZ0s o0lbZpZ0 0o0ZpZ0o Z0ZpOpM0 PZnO0Z0L Z0Z0Z0Z0 0ZPZ0OPO S0A0S0J0 a

c

rZ0lnskZ Z0Z0apop pZ0o0Z0Z Z0ZPo0Z0 pZ0Z0Z0Z Z0O0ZQZP 0O0Z0OPZ S0A0SNJ0 a

2535 8

b

2537

rZ0s0Z0Z Z0A0Zpjp pZ0ZpZ0Z ZpZ0Z0Z0 0Z0Z0ZnZ ZBZ0ZbO0 POPZ0O0Z S0Z0S0J0 a

0l0s0skZ ZbZ0apZp 0o0opo0Z o0m0ZPZB 0ZPMPZ0L Z0M0Z0Z0 PO0S0ZPO Z0ZRZ0ZK a

2534 8

Rook manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0akZ o0o0Zpop 0Z0Z0Z0Z O0onONZ0 0Z0o0Z0Z ZPZ0Z0Z0 0ZPA0OPO S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2539 8 7 6 5 4 3 2 1

2542

0ZrZ0ZkZ o0l0Zpop 0o0ZbZ0Z Z0ZpZ0a0 0ZnA0ZPZ ONZBZPZ0 0OPZ0L0O ZKZRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2544

0ZrlrZkZ obZnZpop 0Z0Z0m0Z Z0opZ0Z0 0Z0Z0Z0Z ZPM0ONO0 PL0Z0OBO S0ZRZ0J0 a

c

rZ0Z0skZ Z0Znl0Zp pZ0o0opZ ZpmPZ0Z0 PZpSPO0Z Z0Z0ZQOP NOBZ0ZKZ Z0Z0S0Z0 a

2541 8

b

2543

rZ0s0ZkZ Z0Z0lpZ0 0ZpZ0ZpZ o0Z0o0Zp PmQZPZ0a Z0M0A0ZP 0OPS0ZPZ Z0Z0ZRJ0 a

kZrZ0Z0Z opl0Z0o0 0m0a0s0o Z0ZnMpZ0 0ZpO0O0O Z0O0ZRZ0 POQZ0M0Z ZKA0Z0S0 a

2540 8

Knight manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZbZ0apop pm0Z0Z0Z Z0Z0O0Z0 0ZplNA0Z Z0Z0Z0Z0 PZBZQOPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2545 8 7 6 5 4 3 2 1

2548

0ZrZrZkZ ZbZnlpap po0o0ZpZ Z0Z0Z0Z0 0ZPOpZ0Z ZQZ0O0ZP 0O0MBOPA S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2550

rm0Z0skZ opZbl0op 0ZpZpm0Z Z0ZpZpZ0 0ZPO0Z0Z MPZ0ZNO0 PZ0ZPOBO S0L0ZRJ0 a

c

rZbl0Z0j opo0Z0ap 0Z0o0ZpZ Z0Z0ZrZ0 0ZPZ0ZnZ Z0M0Z0Z0 PO0ZBOPO S0AQZRJ0 a

2547 8

b

2549

0Z0Z0mkZ ZpZrspo0 pZpZ0Z0Z O0Z0Z0Z0 0ZPOpZno ZRM0O0Z0 0Z0Z0OPO ZRZ0ZNJ0 a

0s0Z0lnj S0ZbZra0 0Z0o0m0o Z0oPo0Z0 0ZPZPZ0Z Z0MNZ0Z0 0Z0ABZ0O L0Z0Z0SK a

2546 8

Knight manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0Z0j o0ZrZ0Zp 0opoblpZ Z0Z0a0Z0 0ZPAPZpZ ZPM0L0Z0 PZ0S0OPO Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2551 8 7 6 5 4 3 2 1

2554

rZbl0jrZ opZ0Z0Z0 0Z0o0Z0Z O0ZPo0o0 0O0ZPmPo Z0M0MPZ0 0ZRZ0Z0Z Z0SQZBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2556

rZ0lrZ0j Z0ZbZ0ap po0O0ZnZ Z0oQo0o0 0Z0ZPo0Z A0M0ZPZ0 PZ0ZBZPO Z0ZRZRJ0 a

c

rZ0Zqs0j ZpobZ0ap 0Z0o0ZnZ Z0ZPZpA0 0OPZ0Z0Z Z0M0ZBZ0 0Z0L0ZPO ZRZ0ZRZK a

2553 8

b

2555

rZblnZ0a opZ0Z0Zk 0Z0o0mrZ ZPZPZpZp PANZpO0Z Z0M0Z0Z0 0Z0LBZPO Z0S0ZRZK a

rZ0l0snj ZpobZ0ap 0Z0o0m0Z Z0ZPZpZ0 0OPZ0S0Z Z0M0Z0Z0 0AQMBZPO Z0ZRZ0J0 a

2552 8

Knight manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sbl0Z0j Z0Z0Zrap 0o0o0mpZ ZPZPopZn 0ZNZPZ0Z Z0M0ZPZ0 0AQZBZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2557 8 7 6 5 4 3 2 1

2560

rZnlnskZ Z0ZbZpap 0Z0o0ZpZ Z0oPo0Z0 0ZPZPZ0Z ZQM0Z0Z0 0Z0MBOPO ZRA0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2562

rZ0Z0skZ Z0Z0l0ap nZ0o0mpZ ZNoPo0Z0 0ZPZ0Z0Z Z0ZQZ0O0 0Z0A0ONO ZRZ0S0J0 a

c

rZ0l0skZ opZ0Z0ap 0m0o0m0Z Z0oPobZ0 0ZPZ0Z0Z Z0M0A0Z0 PO0ZBO0O S0ZQM0SK a

2559 8

b

2561

rZrZ0m0Z o0Z0l0j0 0o0o0Zpa Z0ZPo0Zp 0ZPZNZ0Z ZRZ0Z0ZP PZ0ZQOPZ Z0ZRM0J0 a

0ZrZrZ0Z o0Z0lnj0 0o0o0o0Z Z0oPo0op 0OPZPm0Z O0M0Z0ZP 0Z0S0OPM Z0ZQS0J0 a

2558 8

Knight manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0Z0j o0s0Znmp 0oBo0lpZ Z0ZPopZ0 0O0ZPZPO ZRZ0ZPZ0 0Z0L0A0Z Z0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2563 8 7 6 5 4 3 2 1

2566

rZbl0snj opZ0Z0a0 0ZpO0ZpZ Z0O0o0Zp 0O0ZPo0Z Z0M0ZNZP PA0Z0ZPZ S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2568

0Z0Zns0j Z0Z0Z0s0 pZNoBl0a Z0oPo0Zp 0ZPZPo0Z O0Z0ZPZ0 0S0Z0L0O ZRZ0Z0ZK a

c

0Z0Z0skZ Lpo0Z0a0 0Z0o0ZbZ ZNZPo0op 0OPZ0l0Z Z0ZnM0Z0 0Z0ZBOPO Z0Z0ZRJ0 a

2565 8

b

2567

rZrZ0ZkZ onZ0l0Z0 no0o0ZpZ Z0oPo0op 0OPZPZ0Z O0M0LPZ0 0Z0M0ZPO ZRZ0ZRJ0 a

rZbZrZkZ Z0ZnZpa0 po0l0m0o Z0oPo0o0 QZPZPZ0Z O0M0Z0A0 0Z0MBOPO SRZ0Z0J0 a

2564 8

Knight manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbs0mkZ Zpl0Z0ap 0ZpZ0opZ o0O0oPZ0 PZ0ZPZ0Z Z0M0A0ZP 0OQZBZPZ Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2569 8 7 6 5 4 3 2 1

2572

rm0ZrZkZ opZ0Zpap 0l0obmpZ Z0o0Z0Z0 0ZPZPA0Z ZQM0ZNZ0 PO0ZBOPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2574

0m0ZnZkZ o0aqZ0Zp 0o0o0ZpZ ZPZPo0Z0 PZQZPZ0Z M0Z0A0ZP 0Z0Z0MPZ Z0Z0Z0J0 a

c

rZbZ0j0s Z0l0ZPo0 pZ0opa0Z ZpZ0m0Z0 0Z0MPZ0Z ZPM0A0Z0 0OPZ0ZQO Z0JRZ0ZR a

2571 8

b

2573

0Z0ZrZkZ obZ0ZqZp no0oropZ Z0o0Z0Zn 0ZPZPZ0A ZNOBZPZ0 PZ0L0ZPO Z0ZRS0ZK a

0s0Z0Z0s Z0Zqmpj0 0Z0o0Zpa ZpZPo0Z0 pO0Z0Z0Z O0ORZNO0 0Z0ZQOBZ S0Z0Z0J0 a

2570 8

Knight manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0lrZ0ZkZ ZrZ0Zpo0 0Zno0m0o Z0Z0oPZ0 0Z0ZPZ0Z SNO0S0O0 0O0Z0ZBO Z0ZQZ0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2575 8 7 6 5 4 3 2 1

2578

rZ0ZrmkZ ZbZ0Zpap pZqZpZpZ ZpZpO0O0 0Z0A0O0L Z0M0Z0ZR POPZ0ZBO S0Z0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2580

rZ0Z0ZkZ Z0ZbZ0o0 pZnZpZ0Z ZpZpZ0Z0 0Z0O0s0Z Z0M0ZNZ0 PO0Z0OPZ Z0ZRS0J0 a

c

rZ0Z0Z0Z opsbjpZp 0m0Z0o0Z Z0Z0o0Z0 0ZPZ0Z0O ZPZ0ZNZ0 PJ0SBOPZ Z0ZRZ0Z0 a

2577 8

b

2579

0l0Z0skZ ZpZbs0op pZnapm0Z Z0ZpZ0Z0 0Z0O0Z0Z O0ZBANZP 0OQZNOPZ Z0S0S0J0 a

rZblkZ0s opZ0anop 0Z0Z0m0Z Z0opZ0M0 0Z0Z0Z0L Z0O0Z0Z0 POBZ0OPO S0A0J0MR a

2576 8

Knight manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ opl0apop nZpZpZ0Z Z0Z0Z0Zb PmNOPZ0Z ZPM0Z0O0 0Z0L0OBO S0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2581 8 7 6 5 4 3 2 1

2584

rZbs0ZkZ Z0lnapo0 pZpZ0m0o ZpO0o0Z0 0O0ZPZ0Z Z0M0ZNZ0 PAQZBOPO ZRZ0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2586

rZ0Z0Zns Zpobl0jp pZnZ0opZ Z0Z0o0Z0 BZ0ZPZ0Z M0O0LNZ0 PO0Z0OPO S0ZRZ0J0 a

c

0Z0l0s0j ZpZ0a0op pZro0Z0Z Z0ZQobZ0 0ZPZ0Z0Z MPZ0APZ0 PZ0Z0ZPO Z0SRZ0J0 a

2583 8

b

2585

0sbj0Z0s Z0Z0Zpa0 0ZnZpMpZ Z0lpO0Z0 po0o0OPo Z0ZPZ0Z0 POPZ0ZBO ZKMRL0ZR a

0Z0lrakZ Z0ZnZpop 0Zbo0m0Z ZpZ0o0A0 0Z0ZPZ0Z MBO0ZNZP 0O0Z0OPZ Z0ZQS0J0 a

2582 8

Knight manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblnZkZ Z0Z0ZrZ0 0o0o0apZ o0mPo0Zp PZPZPo0Z SNM0ZPZ0 0Z0ZBAPO Z0ZQZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2587 8 7 6 5 4 3 2 1

2590

rZ0ZkZns ZbZ0Zpo0 pZ0l0a0Z Z0oPo0Zp Po0ZPZ0Z Z0M0A0L0 0OPZBZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2592

0Zks0Z0s opZbl0Zp 0ZpZ0ZpZ Z0o0o0Z0 0Z0ZPm0Z Z0MPLNZP POPZ0ZPZ Z0JRZ0S0 a

c

0l0ZrskZ ZbZ0a0op po0Zpm0Z Z0ZnMpZ0 0Z0O0Z0Z O0M0Z0ZQ BO0A0OPO Z0ZRS0J0 a

2589 8

b

2591

rZ0ZrZkZ Zbl0Zpop pZpanZ0Z Z0Z0o0Z0 Po0ZPZ0Z Z0M0APOB 0OPZ0L0O S0Z0S0J0 a

0sbZrZkZ ZpZ0Zpa0 0MpZnZpZ o0Z0o0o0 PZ0ZPZBZ Z0M0Z0ZP 0OPZ0OPZ S0ZRZ0J0 a

2588 8

Knight manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ Z0l0apop pZnZpm0Z ZpZ0Z0Z0 0Z0Z0Z0Z O0MRONZ0 BOQZ0OPO S0A0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2593 8 7 6 5 4 3 2 1

2596

rZ0lka0s Z0o0Zpop pZ0ZnZbZ ZpZpO0Z0 0Z0O0OPZ ZBZ0Z0ZP PO0M0Z0Z S0AQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2598

0Zra0ZkZ Z0Z0ZnZp 0ZpZpZpO ZqZpOpZ0 0O0O0A0Z Z0Z0ZNZ0 0Z0L0OPZ Z0S0Z0J0 a

c

rZ0Z0skZ o0o0Zpl0 0ono0Z0Z Z0Z0Zbo0 0ZPZ0Z0Z O0L0OPA0 0O0ZNZPZ Z0JRZ0ZR a

2595 8

b

2597

rZ0Zka0s ZpZ0opop 0onZ0Z0Z Z0ZpZbZ0 0Z0O0Z0Z Z0Z0ONZ0 PO0A0OPO S0Z0JBZR a

rZ0ZrZkZ Zblnapop pZno0Z0Z Zpo0oNA0 0Z0ZPZ0Z Z0OPZNZ0 POBZ0OPO S0ZQS0J0 a

2594 8

Bishop manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrlkZ s0ZnZpZp bopZ0ZpZ Z0Z0Z0Z0 PZ0ONZnZ Z0ZBZ0O0 0L0M0O0O S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2599 8 7 6 5 4 3 2 1

2602

0ZrZnZkZ o0Z0Z0op ro0ZPo0Z l0Z0Z0Z0 bZpA0Z0Z Z0O0ZPZ0 0L0Z0ZPO S0Z0SBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2604

rZ0Z0snj Zpoqapop 0ZnZbZ0Z o0ZpO0Z0 0Z0O0Z0Z OBZ0MNZ0 0OQZ0OPO S0A0S0J0 a

c

rZ0ZnakZ ZpZbZ0s0 0Z0o0Z0Z ZNZPo0lp PZ0ZPoPm Z0Z0Z0ZP 0O0ZBMPZ Z0SQARJ0 a

2601 8

b

2603

0Zbl0skZ orZ0Znap 0Zpo0opZ Z0o0Z0Z0 0Z0ZNA0Z Z0ZPZNZP POPZ0OPZ ZRZQS0J0 a

rZbl0anj opZ0Zrmp 0Z0o0ZpZ Z0oPo0O0 0ZPZPo0O Z0MNZPZ0 PO0ABZKZ Z0S0Z0LR a

2600 8

Bishop manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0ZkZ o0obZ0Z0 0o0o0s0Z Z0ZPZnMp 0ZPa0OpZ Z0ZBZ0Z0 PZ0A0ZPO ZRZQS0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2605 8 7 6 5 4 3 2 1

2608

rZnlnskZ Z0ZbZ0ap 0o0o0Z0Z ZPZPo0Z0 NZNZPZpZ A0Z0ZPO0 0Z0ZBZ0Z ZRZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2610

0sbZ0skZ ZpZnl0ap pZpZ0opm Z0O0o0Z0 NZ0ZPZ0Z Z0Z0ZNZ0 POQABOPO Z0ZRZRJ0 a

c

rZbZ0skZ o0ZqZnap no0o0ZpZ Z0oPopZ0 0OPZPZ0A O0M0ZPZ0 0Z0MBZPO ZRZQZRJ0 a

2607 8

b

2609

0Z0Z0skZ opZ0ZqZ0 0Z0o0s0a ZPZPo0Zp 0ZRZQZpZ Z0ZNZ0Z0 PZ0Z0OPO Z0Z0ZRJ0 a

rZbZqskZ o0Z0Znap no0o0Z0Z Z0oPo0o0 0OPZPo0Z O0MBZPZP 0Z0M0APZ ZRZQJ0ZR a

2606 8

Bishop manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0jrZ0Z o0obZpop 0o0a0Z0Z Z0Z0ZqZ0 0ZBO0Z0Z Z0Z0A0O0 PZPZ0O0O S0ZQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2611 8 7 6 5 4 3 2 1

2614

0Z0arskZ Zpl0Zpo0 pZ0o0Z0Z O0ZPo0Zp QZPZnZ0Z Z0Z0A0OB 0O0Z0O0O S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2616

0Z0ZrskZ ZpZqa0op pAbopZ0Z O0Z0Z0Z0 0Z0ZPo0Z Z0Z0Z0OB 0OPZ0O0O S0ZQS0J0 a

c

0Z0Z0sbj ZpZ0ZqZ0 pZnZps0o Z0ZpZ0o0 0O0O0a0Z O0ZQZNMP 0Z0ZROPZ ZBZ0S0J0 a

2613 8

b

2615

0Zrj0a0Z Z0ZbZpZ0 0Z0Z0ZpZ o0l0O0O0 0o0oPZ0Z ZPZQZ0A0 PZPZNZ0Z ZKZ0Z0ZR a

0Zrs0ZkZ ZbZ0lpop pZ0ZpZ0Z Zpm0O0Z0 0Z0M0Z0Z O0Z0L0Z0 0OPZ0ZPO ZKZRSBZ0 a

2612 8

Bishop manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0ZkZ ZpZnZro0 plnZpo0o Z0ZpO0Z0 0O0O0O0Z O0ZBZNZ0 0Z0LNZPO Z0S0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2617 8 7 6 5 4 3 2 1

2620

0Z0Z0skZ opZbZ0op 0l0ZpZ0Z Z0apm0Z0 0Z0M0Z0Z ZPZ0Z0OB PZ0ZNZKO S0AQZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2622

rZ0s0mkZ opZ0Zqop 0ZpZpo0Z Z0Z0Z0Z0 0Z0O0O0O Z0Z0ZQOB POPZ0Z0Z Z0JRS0Z0 a

c

0m0lkm0s s0Z0ZpZ0 0o0ZpZ0o oPZpO0aQ 0Z0O0ZNo ZNZ0ZRZ0 0O0A0OPZ S0Z0J0Z0 a

2619 8

b

2621

0Z0ZkmnL Z0Z0lbZ0 0Z0Z0ZpZ opZpOpO0 0ZpO0M0Z Z0O0A0Z0 POBJ0Z0Z Z0Z0Z0Z0 a

0Z0Z0skZ ZpZ0ZpZp 0Z0obapZ Z0m0o0Z0 0ZPZPZ0Z sPM0ZBZ0 0Z0A0OPO ZRZ0ZRJ0 a

2618 8

Bishop manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0Z0s ZpoqZ0op pZpa0ZnZ Z0Z0o0Z0 0Z0ZPZ0Z ZQO0APSP PO0Z0O0J SNZ0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2623 8 7 6 5 4 3 2 1

2626

0jns0Z0s opZbZpZ0 0ZnZpZpo l0ZpO0Z0 PZpO0M0Z Z0O0Z0Z0 0ZPABOPO S0Z0LRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2628

0s0l0skZ ZpZ0opap pZ0o0mpZ Z0Z0ZbZ0 0ZPZ0Z0Z Z0M0A0O0 PO0LPOBO S0Z0ZRJ0 a

c

rZbl0skZ Z0o0Zpop pZ0o0m0Z O0m0o0Z0 0ZQZPZ0Z Z0O0Z0O0 0O0M0OBO S0A0J0ZR a

2625 8

b

2627

rZ0Z0skZ opZ0Zpop 0mnl0ZbZ Z0Z0Z0A0 0Z0o0Z0Z O0ZBZPZ0 0OPZNLPO Z0ZRZRJ0 a

rZ0Z0Z0s Z0Z0jpZp 0Zbo0o0Z o0l0oPaN 0o0ZPZ0O Z0ZBZQZ0 POPZ0ZPZ ZKZRZ0ZR a

2624 8

Bishop manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0Z0Z Z0l0Zpap pZrZpZ0Z Z0o0ZpZ0 0ZPZ0O0Z Z0Z0AQZ0 PZPZ0ZPO ZRZ0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2629 8 7 6 5 4 3 2 1

2632

0Z0Z0ZkZ s0ZbZ0Zp pm0ZpZpZ ZpZpO0O0 0Z0Z0O0Z ZBZ0Z0M0 PO0Z0ZPJ Z0S0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2634

rZba0s0j Z0ZqZ0op pm0o0Z0Z Z0ZPo0Z0 0O0ZNZ0Z Z0ZBA0ZP 0Z0Z0OPZ S0ZQZRJ0 a

c

0Z0s0Z0Z LpjnZpo0 0ZpZ0ZpZ Z0Z0Z0Zr 0ZBO0l0Z Z0Z0Z0ZP POPS0O0Z Z0JRZ0Z0 a

2631 8

b

2633

0Zks0Z0s opo0Zpo0 0a0o0m0o Z0Z0Z0Zq 0Z0oPO0Z ZPZPZNZP 0OPA0ZPZ S0ZQZRJ0 a

rZ0ZqmkZ o0Z0s0Zp 0ZbZpZ0A Z0OpLpZ0 0Z0Z0Z0Z Z0Z0ZPZ0 PZ0Z0ZPO Z0S0SBJ0 a

2630 8

Bishop manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblkZ0s Z0Z0mpZp ponapZpO Z0ZpZ0Z0 0Z0O0Z0Z Z0M0ANZ0 PO0ZPOPZ S0ZQJBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2635 8 7 6 5 4 3 2 1

2638

rZ0ZrZ0j ZpZ0Z0Zp 0ZbZqZpZ o0opOpZ0 0Z0Z0O0Z Z0O0Z0L0 POBS0ZPO Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2640

rZ0Zka0s Z0oqZpop pZnZnZ0Z ZpZpO0Zb 0Z0Z0Z0Z ZNO0ZNZ0 POBZ0OPO S0AQS0J0 a

c

rZ0lrmkZ opZ0Z0op 0apZbo0Z Z0ZpZ0Z0 0O0O0O0Z Z0ZBMNO0 PZQZ0O0O S0Z0ZRJ0 a

2637 8

b

2639

rZ0Zkans ZpZqZ0o0 0ZnZpZ0o ZQZpOpZ0 PO0Z0Z0Z Z0ZNANZ0 0Z0Z0OPO S0Z0ZRJ0 a

0ZrZ0ZkZ Z0Z0Zpo0 pZ0l0a0Z ZpZ0o0Z0 bOrZ0Z0Z O0Z0OQZP 0Z0ZNOPZ ARZ0S0J0 a

2636 8

Bishop manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZqZ0s0Z Z0Zbanjp pZ0o0opZ ZpZPo0Z0 0ZpZPZPZ Z0O0M0MP POBZQOKZ S0Z0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2641 8 7 6 5 4 3 2 1

2644

rZbZkZns opZnZ0op 0Z0Zpo0Z Z0o0Z0Z0 0ZPZ0l0Z Z0A0Z0Z0 PO0MBOPO S0ZQJ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2646

0Z0Zra0j o0ZRZ0Z0 0opZnZqo Z0O0ZpZ0 0OBZpO0A Z0Z0Z0Z0 PZQZ0ZPO Z0Z0Z0J0 a

c

rZ0l0skZ opo0Zpop 0ZnZba0Z Z0ZnZ0Z0 0Z0O0Z0Z O0MBZNZP 0O0Z0OPZ S0AQS0J0 a

2643 8

b

2645

0Zks0a0s opZqopZp 0ZnZbo0Z Z0ZpZ0Z0 0ZPO0Z0Z O0M0Z0O0 0O0Z0OBO S0ZQJ0MR a

0Z0Z0skZ Z0l0Zpap 0Z0ZbZpZ Z0OpZ0Z0 0Z0Z0Z0l ZNZ0APZ0 Ps0Z0ZPO S0ZRZ0J0 a

2642 8

Bishop manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opZbapop 0m0ZpZ0Z m0Z0O0Z0 0O0Z0Z0Z O0Z0ZNO0 0ZQM0OBO S0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2647 8 7 6 5 4 3 2 1

2650

0ZrZrZkZ Zbl0apop pZ0opZ0Z o0m0Z0Z0 PZ0ZPOPZ ZPM0ZBZ0 0ZPA0Z0O Z0S0LRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2652

rZ0ZrZkZ opZ0lpZ0 0anZ0m0Z Z0ZBZ0A0 0Z0Z0Z0Z Z0M0Z0Ob PO0SPO0O Z0ZQZRJ0 a

c

0Z0ska0s o0Z0opop blpZ0Z0Z Z0Z0M0Z0 0O0ZPZ0Z Z0O0Z0Z0 0Z0Z0OPO S0AQJ0ZR a

2649 8

b

2651

0Z0s0Z0j Z0Z0Z0Zp 0ZpZno0Z Z0Z0o0oq 0Z0ZPZ0Z Z0OrZPZ0 PO0Z0SNO Z0Z0LRZK a

rZ0ZrZkZ o0lnZpap bo0o0ZpZ Z0oPZ0Zn 0Z0Z0Z0Z O0M0ZNO0 0OQAPOBO S0Z0S0J0 a

2648 8

Queen manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ o0Z0Zpop 0ono0m0Z Z0o0Z0Z0 0ZPOpO0Z ZNO0O0Z0 PZ0ZBZPO S0AQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2653 8 7 6 5 4 3 2 1

2656

0Zbs0skZ Z0lnZpZp pZ0Z0mpZ Z0Z0o0Z0 PZpZPZ0Z Z0O0LNMP 0ZBZ0OPZ ZRZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2658

rZbl0Z0Z ZpZ0m0ak pO0o0ZrZ Z0ZPopZp 0ZNZPmpZ AQM0Z0Z0 PZ0Z0OPO Z0S0SBJ0 a

c

rZ0Z0s0j Zpo0l0Zp 0Z0o0mpZ ZNOPo0Z0 0O0ZPZnZ Z0Z0ZROb 0ZQMBZ0O ZRZ0Z0J0 a

2655 8

b

2657

0Z0Z0akZ ZpZ0Z0Zr pM0o0ZqZ ObZPo0Z0 0O0ZPoPZ Z0S0ZQZ0 0Z0A0ZPZ Z0Z0Z0J0 a

rZ0l0s0j Z0MbZ0Zp 0opO0Zpm Z0Lno0Z0 0O0ZNZ0Z Z0Z0ZPZ0 0Z0ZBZPO ZRZ0ZRJ0 a

2654 8

Queen manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZkZ ZpZblpZp 0Z0o0mpZ ZPsPo0Z0 0Z0ZPZ0Z Z0M0Z0Z0 0L0ZBOPO S0S0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2659 8 7 6 5 4 3 2 1

2662

rZ0lrZkZ opZ0ZpZn 0Zpo0ZpZ Z0m0a0Op 0ZPMPZ0Z Z0M0APZb PO0LBZ0O Z0ZRZ0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2664

rZ0lrZkZ opZnZpap 0Z0o0Z0Z Z0oPZ0Z0 0ZPZpZ0Z Z0Z0A0ZP PO0M0OPZ S0ZQZRJ0 a

c

rZ0Zka0s Z0Z0Zpo0 pZ0ZpZ0Z l0ZbZ0O0 0o0Z0A0Z ZPZ0LpZB 0OPZ0Z0Z ZKZRZ0ZR a

2661 8

b

2663

0ZrlnZkZ ZpZbZ0Z0 pZ0o0apZ Z0oPZpZ0 0ZPZ0A0Z Z0MBZ0Z0 PO0L0OPZ Z0Z0S0J0 a

rZ0Z0a0j ZpZ0Z0s0 0A0o0Z0Z O0ZPoqZ0 0LRZ0Zpo Z0Z0Z0Z0 0Z0Z0OPO Z0Z0S0J0 a

2660 8

Queen manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0Z Z0Z0jpZ0 0l0ZpZpZ ZpZbL0O0 0o0ZnZ0Z Z0Z0Z0ZB POPZ0Z0Z ZKZRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2665 8 7 6 5 4 3 2 1

2668

0ZrZka0Z AbZ0ZpZ0 pZ0o0ZpZ ZpZ0o0O0 0ZqZPZ0Z O0M0LPZr 0OPS0Z0Z ZKZ0Z0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2670

rZbZkZ0s opZnapo0 0l0ZpZ0o Z0ZpO0Z0 0Z0Z0Z0Z Z0ZBZNZ0 POQA0OPO Z0S0ZRJ0 a

c

0j0s0m0s o0l0a0o0 0o0ZpZ0Z ZPZpO0Z0 0ZnO0Z0Z Z0ZQZNZ0 PZ0A0ZKO S0S0ZNZ0 a

2667 8

b

2669

0Z0lkZ0s ZpZbZpo0 0a0ZpZ0o mPZpO0Z0 0Z0Z0Z0Z Z0OBZNZ0 0Z0A0OPO L0Z0ZRJ0 a

rZbZ0skZ opZ0Z0o0 0Znapl0o Z0Z0Z0Z0 0ZPo0Z0Z ZPZ0ZNZ0 0O0Z0OPO SBAQZRJ0 a

2666 8

Queen manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ opZ0Zpo0 0Z0ZpZ0o Z0anZ0Z0 0Z0Z0Z0Z Z0ZBZNZ0 POPA0OPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2671 8 7 6 5 4 3 2 1

2674

0Z0ZrskZ o0ZqZ0op 0o0o0Z0Z Z0oPm0Z0 0Z0ZPZ0Z Z0Z0OPOb PZRZ0Z0Z Z0AQS0JB a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2676

0s0Z0Z0Z Z0ZqZrjp 0Z0oRo0Z Z0oPZPZ0 0oPZ0Z0o Z0Z0Z0O0 PZ0L0Z0Z Z0Z0S0J0 a

c

rZbZkZ0s Zpl0Zpo0 pZpZ0Z0Z Z0a0oPZp 0ZPZPZnZ Z0MBZQZ0 PO0Z0ZPO S0A0ZRZK a

2673 8

b

2675

rZ0lrZkZ Z0o0apZp pZbZ0ZpA ZpZpO0Z0 PZnO0Z0Z Z0O0ZNZ0 0ZBZ0OPO S0ZQS0J0 a

0Z0s0Z0Z ZpZqZ0a0 0mpZ0oko Z0Z0oNo0 pZ0ZPZPZ ZPZrZNO0 PZ0ZQOKZ Z0S0Z0ZR a

2672 8

Queen manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0ZkZ opl0arop 0ZpZ0Z0Z Z0Z0Z0Z0 PZ0M0ZnZ Z0MQA0O0 0OPZ0O0O S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2677 8 7 6 5 4 3 2 1

2680

0ZrZrakZ ZblnZpop pZ0opZ0Z o0Z0Z0Z0 PZ0ZPOPZ Z0M0ABZ0 0OPS0L0O Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2682

0s0lrZkZ Z0Z0Zpap pZ0o0Z0Z Z0oPO0Op 0ZpZ0O0Z Z0Z0A0Z0 PO0L0Z0O S0Z0ZRJ0 a

c

rZ0lka0s opZ0Zpo0 0ZpZbZ0Z Z0m0Z0Z0 0ZpZ0Z0Z Z0Z0M0O0 POQOPZBO S0A0ZRJ0 a

2679 8

b

2681

rZ0lkZ0s oponZpop 0ZpZbZ0Z Z0a0Z0Z0 0ZPZPZ0Z Z0M0Z0ZP PO0ZBOPZ S0AQJ0ZR a

rZ0l0skZ ZbZ0opap pZ0o0mpZ Z0Z0Z0Z0 0ZPLPZ0Z MPZ0ZPZ0 PA0ZBZPO S0Z0J0ZR a

2678 8

Queen manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ o0lnm0Zp bo0o0ZpZ Z0ZPo0Z0 0Z0ZPZ0Z Z0M0LBOP PO0Z0Z0Z S0Z0J0MR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2683 8 7 6 5 4 3 2 1

2686

rZ0Z0skZ Z0oqZpop bonZ0m0Z o0a0o0Z0 PZNZPZ0M Z0O0Z0O0 0O0ZQOBO S0A0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2688

0ZrZ0skZ ZbZ0apop pl0o0m0Z ZpZ0oPZ0 0Z0ZPZ0Z OBM0Z0M0 0OPZ0ZPO S0ZQZRJ0 a

c

rZ0l0skZ o0o0a0Z0 0o0opm0o Z0Z0Z0o0 0ZPOpZ0Z Z0Z0APO0 POQZPZ0O S0ZRM0J0 a

2685 8

b

2687

rZbl0skZ opZna0op 0ZnZpZ0Z Z0ZpOpZ0 0o0O0Z0Z Z0ZBZNZQ PZPZ0OPO S0A0MRJ0 a

0ZqZ0ZkZ ZpZ0ZrZp 0Z0o0ZbZ o0Z0apZ0 0Z0Z0M0Z Z0M0ZQZ0 POPZ0ZPO S0Z0Z0J0 a

2684 8

Queen manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmbl0skZ opZ0opap 0Z0o0ZpZ Z0Z0O0Zn 0Z0o0ZPZ ZPZ0ZNZP PAPZ0O0Z SNL0JBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2689 8 7 6 5 4 3 2 1

2692

0ZbZ0Zrj Z0l0ZrZp 0Z0Z0opZ o0a0o0Z0 PoPoPZPZ ZPZQZ0MP 0ZRZ0OBZ Z0Z0S0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2694

rZbl0skZ opo0Zpop 0ZnZ0Z0Z Z0ZpO0Z0 0Z0Z0A0Z ZNZQZ0Z0 POPZ0OPO S0Z0ZRJ0 a

c

0Z0Z0skZ ZblpZ0op pZ0ZpZnZ ZpZ0ZrZ0 0Z0Z0OQZ O0ZPA0Z0 0O0ZNZPO S0Z0ZRJ0 a

2691 8

b

2693

0s0Z0skZ obopZ0Zp 0o0lpZpZ Z0Z0mpZ0 0Z0Z0O0Z Z0Z0Z0OQ PZ0MBZ0O ZRA0ZRJ0 a

rZ0lrZkZ ZbZ0ZpZp 0Z0o0mpZ o0oPZ0Z0 0Z0ZPZ0M oPZ0Z0O0 0Z0L0OBO S0Z0S0J0 a

2690 8

Queen manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0ZkZ Z0obZpop pZ0o0a0Z Z0ZPZ0Z0 Po0M0O0Z ZPZ0Z0Z0 0APZ0ZPO S0Z0L0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2695 8 7 6 5 4 3 2 1

2698

0Z0lrZ0Z opZbZkZp 0Z0Z0opA Z0ZPZ0Z0 0ZrZPZ0Z Z0ZNZPZ0 PZ0Z0Z0O L0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2700

0Z0l0skZ o0ZpZ0op bZrZpZ0Z O0ZnZpZ0 0Z0O0Z0Z O0Z0OPZN 0Z0A0ZPO S0ZQJ0ZR a

c

0Zks0s0Z o0ZnZpL0 0ZpOpZ0A ZbZ0Z0Z0 qZ0O0Z0Z ZpSpZNZ0 0O0Z0OPO Z0S0Z0J0 a

2697 8

b

2699

rZ0ZrZkZ Z0Zqopap 0ZpZ0ZpZ o0A0Z0Z0 RZ0OPZbZ Z0Z0ZNZ0 PZ0Z0OPO Z0ZQZRJ0 a

0s0Z0Z0Z Z0Z0l0Zp 0ZPZ0Zpj Z0Z0o0a0 0ZBZ0ZPZ Z0Z0ZQOK 0Z0Z0Z0Z Z0Z0ZRZ0 a

2696 8

Queen manoeuvre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZkZ ZpO0Z0on 0Z0lpZ0o Z0SpM0Z0 0Z0O0Z0O Z0L0Z0O0 0Z0Z0O0J Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2701 8 7 6 5 4 3 2 1

2704

0ZrZ0skZ o0Zbopa0 0o0o0m0o Z0Z0ZPoq 0ZnAPZ0Z ZBM0Z0ZP PZPZNZPL Z0Z0SRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2706

rZ0l0skZ ZQo0Z0op pZpa0Z0Z Z0ZnZ0Z0 0Z0ONZbZ Z0Z0A0Z0 PO0M0OPO S0Z0ZRJ0 a

c

rZbZ0skZ opZ0m0a0 0Z0Z0m0Z Z0o0opZp 0ZPZ0Z0A ZQM0l0O0 PO0ZNZBO Z0ZRZRZK a

2703 8

b

2705

rZ0a0skZ ZbZnZpop pZnZpZ0Z ZqZ0O0Z0 NZ0ZBO0Z ZNZ0L0Z0 0O0A0ZPO S0Z0ZRJ0 a

0sbZ0Z0s opZ0opj0 0Zno0mpZ Z0ZNZ0Zp 0ZBZPZ0Z l0Z0APZ0 PZPL0ZPO ZRZ0ZRJ0 a

2702 8

Capturing the queen

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZkZ0s Z0ZnZpZ0 po0o0mpl Z0oPo0ap 0OPZPZ0Z O0MBZPZ0 0ZQZNAPO ZRZ0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2707 8 7 6 5 4 3 2 1

2710

rZrZ0ZkZ ZbZnapop pZqZpZ0Z O0Z0Z0Zn No0ZPZ0Z Z0ZBZNA0 0O0ZQOPO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2712

rZ0Z0ZkZ Z0Z0ZpZ0 qZ0abmpZ ZpZ0o0Zp 0OpZPO0Z Z0O0A0O0 0ZBZ0ZPM Z0ZRL0J0 a

c

0Z0ZrZ0Z Z0Zbl0j0 pZ0o0opo ZpZ0a0s0 0Z0MPZ0L Z0O0Z0O0 PO0ZBS0O Z0Z0ZRJ0 a

2709 8

b

2711

rmbl0skZ opZ0Zpap 0ZpZ0mpZ Z0ZpZ0Z0 NZ0O0Z0Z L0Z0ONZ0 PO0A0OPO S0Z0JBZR a

rmbZ0skZ ZpZ0opap 0Zpo0mpZ o0ZPZ0Z0 0lPZ0Z0Z Z0M0Z0O0 PO0MPOBO S0AQZRJ0 a

2708 8

Capturing the queen

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0Z0s opZ0jpop nZ0ZpZ0Z ZNopO0Z0 nZ0O0O0O O0Z0ZNZ0 qZPZ0ZPZ ZRL0JBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2713 8 7 6 5 4 3 2 1

2716

rZ0Z0ZkZ o0ZqZpZp 0Z0o0m0Z L0oPm0o0 0o0Z0Z0Z Z0ObZ0O0 PZ0A0OBO S0J0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2718

rZ0lrmkZ obZ0apZp 0opZ0mpZ ZNZpZ0A0 0Z0O0Z0Z Z0Z0ONZB PO0Z0OPO Z0SQZRJ0 a

c

0s0Z0ZkZ L0oqZpop pZrZpZnZ Z0Z0Z0Z0 0mBO0Z0Z Z0A0OPS0 0O0ZKO0O S0Z0Z0Z0 a

2715 8

b

2717

rZbZkZ0s ZpZ0mpop pZ0ZpZ0Z Z0ZpO0Z0 0Z0Z0O0Z M0ZBZ0Z0 PZ0L0ZPO l0A0J0ZR a

rZbZrZkZ ZpopZpop pZnZ0ZnZ Z0Z0O0Zq 0Z0ZRZ0Z A0LBZNZ0 PZ0Z0OPO Z0ZRZ0J0 a

2714 8

Capturing the queen

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmblka0s opopZpop 0Z0Z0Z0Z Z0Z0O0Z0 0Z0Z0ZnZ Z0Z0Z0ZP POPMPOPZ S0AQJBMR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2719 8 7 6 5 4 3 2 1

2722

rZblnskZ opZpopap 0Z0Z0ZpZ m0Z0O0Z0 0Z0M0Z0Z ZBM0A0Z0 POPZ0OPO S0ZQJ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2724

rZbZ0skZ o0o0apop 0Zpo0Z0Z Z0Z0O0Z0 0mPZNZ0l Z0ZBZ0Z0 PO0Z0OPO S0AQS0J0 a

c

rZ0ZqZ0j Z0Z0Zpop pZnZpm0Z ZpZ0Z0L0 0Z0A0O0Z O0Z0ZBZ0 0OPZ0ZPO Z0ZRZ0ZK a

2721 8

b

2723

rZblkZ0s opZnapop 0Zpo0Z0m Z0Z0o0M0 PZBOPZ0Z Z0Z0Z0Z0 0OPZ0OPO SNAQJ0ZR a

rZ0mkZ0s ZponZpZ0 0a0oqZpo o0ZNo0Z0 PZ0OPZ0Z Z0O0ZNZP 0O0Z0OPZ S0AQS0J0 a

2720 8

Capturing the queen

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblrZkZ oponapop 0Zno0Z0Z Z0Z0Z0Z0 0ZBMPZ0Z Z0M0Z0ZP POPZ0OPZ S0AQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2725 8 7 6 5 4 3 2 1

2728

rZ0ZrakZ o0Z0Zpop 0o0Zpm0Z m0Z0M0Z0 0ZPO0l0Z O0ZBZ0Z0 0A0ZQOPO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2730

rZbZkZ0s oponmpop 0Z0o0Z0Z Z0a0Z0Z0 0Z0MqO0Z Z0O0Z0Z0 PO0ZBAPO SNZQZRJ0 a

c

rZ0ZrZkZ obZ0lpap 0o0L0ZpZ Z0o0o0Z0 PZNZ0O0Z Z0Z0Z0Z0 0O0ZBZPO S0A0ZRZK a

2727 8

b

2729

0Zks0Zrm o0ZnZ0Zp 0oqZpo0Z Z0ZpZ0Zb PSpO0ANZ Z0O0L0O0 0ZPZBO0Z S0Z0Z0J0 a

0ZrZrZ0Z ZbZnZ0j0 pZ0l0ZpZ O0o0ZpOp 0oBZpm0L Z0OPSNZP 0O0M0O0Z Z0Z0S0J0 a

2726 8

Capturing the queen

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZkZ0s mpablpo0 pZnZpZ0Z O0ZpO0Zp 0O0O0M0Z Z0ZBANZ0 0Z0L0OPO ZRZ0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2731 8 7 6 5 4 3 2 1

2734

rZrZ0ZkZ ZpZnopap pZnobZpZ l0ZNZ0Z0 0ZPZPZ0Z O0Z0A0Z0 0O0MBOPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2736

rm0Zka0s opo0Zpop 0ZbZpl0Z Z0Z0Z0Z0 0Z0O0Z0Z Z0ZBZNZ0 POPZ0OPO S0AQJ0ZR a

c

rZbZ0skZ o0ZnZnap 0Zpo0lpZ Z0Z0ZpZ0 0ZPMPZ0Z A0M0Z0ZP PZ0Z0OPZ ZRZQSBJ0 a

2733 8

b

2735

0Z0Z0Zrj opabZ0Zr 0ZpZqZ0Z O0OpZpZp 0O0OpZ0L Z0Z0O0O0 0Z0ZBZRO Z0Z0A0SK a

rZbZnZkZ o0Z0lrZ0 0Z0o0Zna ANoPo0Zp 0ZPZPoPZ ZRZ0Z0ZP PZ0LBMPZ ZRZ0Z0J0 a

2732 8

Capturing the queen

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0srZ0mkZ ZpZ0Zpop 0Z0Z0m0Z oPZ0Z0Z0 0lPo0O0Z Z0ZQZBO0 0ZRZ0O0O Z0A0ZKZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2737 8 7 6 5 4 3 2 1

2740

rZbZka0s Z0Z0Zpop pZnopZ0Z ZpZ0Z0Z0 0l0ZPOQZ Z0M0A0Z0 POPZ0ZPO Z0JRZBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2742

0Z0s0akZ Z0Z0mrZp pM0o0ZpZ Z0ZRo0Z0 0ZRZ0Z0Z lPZ0ZPZ0 PZ0ZQAPO Z0Z0Z0J0 a

c

0Z0ZnZkZ ZrZbZpap pM0o0ZpZ Z0oPo0Aq 0ZPZPZ0Z ORZNZPO0 0ZQZ0Z0O Z0Z0Z0J0 a

2739 8

b

2741

0s0s0ZkZ oBZ0opap nZ0Z0mpZ l0Z0Z0Z0 0Z0Z0Z0L Z0M0A0OP PO0ZPO0Z ZRZ0ZRJ0 a

rZ0Z0ZkZ o0lrZpa0 BZpZ0Z0o Z0Z0o0oP 0A0ZbmPZ L0Z0ZPZ0 POPZ0Z0Z Z0JRS0Z0 a

2738 8

Capturing the queen

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZkZ o0o0Z0Z0 0ZporZqZ Z0Z0mbZ0 0ZPZ0ZrZ ZPZ0Z0OQ PM0Z0Z0O S0Z0S0JB a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2743 8 7 6 5 4 3 2 1

2746

rZ0Z0skZ opZ0opa0 0Z0o0Zpo Z0Z0Z0Zq 0ZbZPZ0O Z0M0APZ0 POPL0ZPZ Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2748

0Z0a0Z0s Z0Z0s0Zp 0o0Z0o0j ZPZ0oBo0 0Z0ZPZPZ L0Z0ZPZq 0ZRZ0Z0O Z0ZRZ0ZK a

c

0Zbl0skZ o0Z0Zpap pZ0o0ZpZ Z0ZPZ0Z0 0ZpZQO0Z Z0OrZ0ZP PO0M0ZPZ S0A0ZRJ0 a

2745 8

b

2747

0j0Z0a0s ZpZrZbZ0 pZpO0o0Z M0O0onZp qO0Z0ZpZ O0ZNA0Z0 0Z0ZQOPO S0ZRZ0J0 a

0Z0Z0skZ ZbZ0l0Zp porZpopZ Z0ZnZ0Z0 PZPLNZ0Z Z0ZBZ0Z0 0O0Z0OPO Z0ZRS0J0 a

2744 8

Capturing the queen

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0skZ ZpZbZpap pZnLpo0Z Z0Z0ZPZB 0Z0ZPZ0Z ZNZ0ZRZ0 qZ0Z0ZPO ZNZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2749 8 7 6 5 4 3 2 1

2752

rZ0Zka0s ZpZbZpZ0 pZ0mpZ0Z ZqOPZpZ0 0Z0Z0OBo ONZQZ0Z0 0Z0M0ZPO S0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2754

rZbZkZ0s opZ0opZp 0Z0Z0ZpZ Z0Z0Z0Z0 0ZBaPZ0Z l0Z0Z0Z0 PZ0A0OPO S0ZQZRJ0 a

c

rZbZkZ0s opZ0mpop 0Z0a0Z0Z Z0o0o0Z0 0ZPZ0Z0l Z0MPZ0Z0 PO0ZBOPO S0AQJ0ZR a

2751 8

b

2753

0Z0ZrZkZ S0Z0Zpap 0Z0o0mpZ ZpsPZ0Z0 0lpZPO0Z Z0M0ZBZP 0O0Z0LPZ Z0Z0ZRJ0 a

0Zbs0skZ ZpZ0apo0 pZpZ0m0o L0Z0MpZ0 PmBOPZ0Z Z0M0Z0A0 0O0ZQZPO S0Z0ZRJ0 a

2750 8

Capturing the queen

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0Z0j o0Z0ZpZp 0s0Z0ZpZ Z0obZ0Z0 PZ0Z0S0Z AnO0O0ZP 0SQZ0ZPJ ZBZ0l0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2755 8 7 6 5 4 3 2 1

2758

rm0j0Z0s opZ0Zpop 0Z0ZpmbZ ZNa0M0Z0 PZ0ZPZ0Z Z0Z0ZPZ0 0O0Z0ZPO S0AKZBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2760

0srZ0ZkZ mqZ0Z0ap pZpobZpZ S0Z0ZpZ0 PO0OpZ0Z Z0Z0OPO0 0ZQANZBO Z0Z0ZRJ0 a

c

0Zbs0m0Z ZpZrZko0 pZpZ0o0o Z0OPo0Z0 0O0ZPZ0Z ZNM0ZPZ0 0Z0Z0SPO S0Z0Z0J0 a

2757 8

b

2759

0ZkZ0Z0s opZrZpZb 0Z0ZpZ0o O0a0Z0on 0ZBZPZ0Z Z0M0ZPA0 0OKZ0ZPO S0Z0Z0ZR a

rZbZ0skZ Z0Z0apo0 pZpZpZ0o Z0Z0O0Z0 0ZPZNlPZ Z0Z0Z0Z0 PO0Z0ZBO S0ZQS0ZK a

2756 8

Piece on a bad square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZkZ ZpZ0Z0a0 0o0o0Zno ZPsPo0o0 0Z0ZPZ0Z Z0A0Z0O0 0O0Z0M0O Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2761 8 7 6 5 4 3 2 1

2764

rZ0l0skZ opo0Z0ap 0Z0o0Z0Z Z0ZPZbZ0 POPZ0opZ Z0M0Z0Z0 0A0M0O0O S0Z0S0JQ a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2766

rZbZ0skZ o0l0Znap 0ZpZ0Z0Z Z0Z0Z0o0 0Z0ZPo0Z ZQM0Z0ZP PO0ZBOPA S0Z0J0ZR a

c

0s0Z0skZ Z0mqm0ap pZ0o0opZ Z0oPo0ZP 0ZPZPZPZ Z0MBAPZ0 PZ0Z0Z0L Z0S0J0ZR a

2763 8

b

2765

rZbZrlkZ ZpZnZpa0 0Zpo0Zpo o0m0Z0Z0 0ZPMPA0Z Z0M0ZBZP PO0L0OPZ Z0ZRS0J0 a

0Z0srZkZ o0Z0ZpZp 0o0Z0lpZ mQZPa0Z0 0Z0Z0Z0Z Z0Z0A0ZP PO0ZBOPZ Z0S0S0J0 a

2762 8

Piece on a bad square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ o0Z0opap 0Z0o0mpZ lpmPZ0AP 0ZPZ0O0Z Z0M0Z0Z0 POQZBO0Z Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2767 8 7 6 5 4 3 2 1

2770

rZbZrmkZ Z0l0Zpap pZ0opZpZ ZpZ0mPO0 0Z0ZPZ0L Z0MBA0ZR POPZNZ0O S0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2772

rZ0Z0ZkZ o0Z0ZroN 0Zpl0Z0o Z0ZpZ0Zn 0Z0M0ZPZ Z0Z0Z0O0 PO0Z0Z0O ZBZQS0J0 a

c

rZ0l0j0s opZbapo0 0m0ZpZ0o Z0ZpO0Z0 0Z0Z0ZQZ Z0ZBZNZ0 PORA0OPO Z0S0Z0J0 a

2769 8

b

2771

0s0lbZkZ Z0l0apZp 0ZnopZpZ Zpm0Z0Z0 0Z0ZPO0Z ZPZ0ABO0 0ZPSNZQO ZNZRZ0J0 a

rZbl0j0Z Z0Z0Zpap pZnZ0mpZ Z0ZpZ0Z0 0o0Z0ZPZ Z0Z0ZPZ0 POPL0Z0O SNZNJBZR a

2768 8

Piece on a bad square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0ZkZ opZ0Z0o0 0Z0Z0o0m ZPo0o0ZR 0ZPZ0Z0Z Z0ZrZNOP PZ0Z0OKZ Z0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2773 8 7 6 5 4 3 2 1

2776

rZ0l0ZkZ o0ZbZpo0 0ZpZ0Zno Z0ApZ0Z0 0O0Z0Z0Z O0L0Z0OP 0Z0ZrOBZ Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2778

rZ0Z0skZ ZqZnapop pZRZpZ0Z ZpZpO0Z0 0Z0M0Z0Z ZPZ0O0ZP PAQZ0OPZ Z0Z0ZRJ0 a

c

rZbanZkZ Z0ZpZpop ponApZ0Z l0Z0Z0Z0 0MPZPZ0Z Z0OQZ0Z0 PZ0ZBOPO S0Z0ZRJ0 a

2775 8

b

2777

0j0s0Z0Z o0a0ZpZp 0o0Z0L0Z Z0o0Z0Z0 0ZPZ0Z0Z Z0Z0ZbO0 POBZ0OnO ZKZ0S0Z0 a

rZ0s0ZkZ Zpl0ZpZp 0Z0ZpZpZ oBa0O0Z0 PZ0AQO0Z Z0O0Z0Z0 0m0Z0ZPO S0Z0ZRJ0 a

2774 8

Piece on a bad square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0skZ Z0Zblpap 0Z0o0mpZ m0oPo0AP 0oPZPZPZ ZPZBZPZ0 rZNL0Z0Z ZRZNJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2779 8 7 6 5 4 3 2 1

2782

bm0lka0s Z0o0Zpop 0Z0ZpZ0Z ZpZnM0Z0 0Z0OPZ0Z ZPo0Z0O0 0Z0Z0OBO ZNAQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2784

0Z0s0skZ ZpZ0s0op nM0Z0m0l A0ZpZpZ0 0Z0OpO0Z OPZ0O0O0 0Z0MQZ0O S0Z0ZRJ0 a

c

0Z0ZrZkZ Z0Z0Z0a0 0o0o0Zpo ZrZpZ0M0 0O0Z0Z0Z Z0Z0O0O0 PZ0Z0OBO Z0ZRZ0J0 a

2781 8

b

2783

0ZkZrZ0Z Z0o0Zpop pZ0s0Z0Z ZpZ0m0Z0 0O0ZQA0Z Z0O0Z0ZP PZ0Z0JPl SNZ0S0Z0 a

0Z0Z0Z0Z Z0Z0ZpZ0 0Z0Zpa0Z o0ZpZkop 0Z0O0Z0Z ArZ0O0O0 nONJ0O0O Z0ZRZ0Z0 a

2780 8

Piece on a bad square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0arZkZ ZnlbZpop pZ0o0Z0Z ZpZPZ0Z0 0Z0ZPo0Z ZPOBZNZP RZ0Z0OPZ SNZQZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2785 8 7 6 5 4 3 2 1

2788

rZ0l0Z0s opZ0Zpj0 0mpZbZ0Z Z0ZpZ0o0 0Z0OPM0a Z0MBZPZ0 PO0LKZ0Z Z0Z0Z0SR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2790

rZ0Z0ZkZ Z0l0aron pZ0o0Z0o mpZPo0Z0 0ZpZ0Z0Z Z0O0ZNMP PO0ZQOPZ S0ARZ0J0 a

c

rZbZrZkZ opZpo0mp 0Z0Z0opA Z0OPZ0Z0 0Z0Z0Z0Z Z0Z0Z0Z0 PZ0ZBOPO Z0S0ZRJ0 a

2787 8

b

2789

rZ0a0ZkZ Z0Z0Z0op poro0o0Z Z0ZNoPZ0 PO0ZPZQZ ZnA0S0OK 0ZqZ0Z0O Z0ZRZ0Z0 a

0Zks0Z0s opZnZpop 0ZpZpZ0Z Z0Z0Z0O0 PaBOPZnl Z0M0ZQZ0 0O0Z0ZPO S0A0ZRJ0 a

2786 8

Piece on a bad square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0akZ ZBZ0Zpo0 0Z0Zbo0o Z0s0Z0Z0 0ZnZ0Z0A Z0ZRZNZP PZ0Z0OPZ Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2791 8 7 6 5 4 3 2 1

2794

0Zrl0skZ Z0Z0Zpop pZ0Z0o0Z ZpaNZ0Z0 0Z0Z0Z0Z ZBZ0O0Z0 PmPZQOPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2796

rZ0Z0skZ opo0Z0Z0 0Z0a0o0o Z0o0o0o0 0Z0ZPZ0Z Z0ZPZPAP POPZ0OKZ S0Z0ZRZ0 a

c

bZ0l0skZ Z0ZrZpop pZ0ZpZ0Z mPOpZ0Z0 PA0Z0O0Z Z0Z0Z0O0 0ZRLNZBO Z0ZRZ0J0 a

2793 8

b

2795

rZ0ZrZkZ ZqZ0apo0 pZ0o0Z0o ZpZNo0Z0 PZnZPZPZ ZQO0Z0Z0 0O0Z0OPZ S0A0S0J0 a

rZ0Zka0s opl0Zpop 0ZnZpZ0Z Z0opO0Z0 0Z0Z0Z0Z Z0O0ZPAP POPL0O0Z Z0JRZBZR a

2792 8

Piece on a bad square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0lbsranj Z0Z0ZpZ0 po0o0OpZ Z0oPZ0Op PZ0ZPZ0O M0M0ZQA0 0O0Z0Z0Z S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2797 8 7 6 5 4 3 2 1

2800

0Zrs0ZkZ o0ZqZpap 0o0ZpZpZ Z0Z0O0ZP 0m0ObMQZ ZBZ0A0Z0 PZ0Z0OPZ Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2802

0Z0Z0Z0Z spZ0Z0Zp pM0ZnjpZ Z0O0ZpZ0 0ZBZ0O0Z Z0J0Z0Z0 PO0Z0ZPO Z0Z0Z0Z0 a

c

0Z0Z0m0Z ZpZ0Z0op 0Z0j0o0Z oBo0Z0Z0 0Z0ZPO0Z OPZ0J0Z0 0Z0Z0ZPO Z0Z0Z0Z0 a

2799 8

b

2801

0Z0Z0Z0Z o0Z0ZpZp 0spZrjpZ Z0SpZ0Z0 PZ0Z0Z0Z ZPS0Z0Z0 0ZPZ0OPO Z0Z0ZKZ0 a

0Z0j0ZrZ Z0ZnZ0Z0 0o0ZpZ0Z o0ZpO0Z0 PZ0OrZ0Z ZRO0ZKOR 0Z0Z0Z0Z Z0Z0ZNZ0 a

2798 8

Piece on a bad square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZqskZ opZbZ0ap 0ZnZ0opZ Z0Z0o0Z0 0Z0Z0ZnL O0M0ZNOB 0O0ZPO0O Z0ARJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2803 8 7 6 5 4 3 2 1

2806

rZbZ0Z0j opZrZpo0 0Z0ZpZ0Z l0Z0Z0Z0 0Z0aBZ0Z Z0M0Z0Z0 POQZ0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2808

rZ0Z0skZ opZ0lpa0 0Zpo0ZnZ Z0Z0Z0Z0 0Z0OPObo ZBM0Z0Z0 PO0L0ZPA Z0ZRS0J0 a

c

rZ0lrZkZ opZ0Zplp 0Z0Z0ZpZ Z0Z0Z0Z0 0Z0Z0Z0Z Z0MnA0O0 PoQZ0OBO Z0ZRZRJ0 a

2805 8

b

2807

0Z0Z0ZkZ Z0Z0lpa0 0Z0Z0Z0o ZNo0o0o0 0mQZNZ0Z Z0Z0O0ZP rO0Z0OPZ Z0Z0ZRJ0 a

rZ0l0skZ opZnZpop 0Z0o0m0Z Z0oPZbZ0 0ZPZpZ0Z O0O0OPZ0 0Z0ZNZPO SBAQZRJ0 a

2804 8

Piece on a bad square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0Znj Z0ZRZpZp pZ0Z0ZpO ZpZ0o0Z0 0ZqZNmPZ ZNZ0ZPZ0 POPL0Z0Z Z0J0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2809 8 7 6 5 4 3 2 1

2812

0Z0lrZkZ ZrZbZpmp pZ0o0ZpZ m0oPZ0Z0 0ZPZ0O0Z Z0Z0O0Z0 PZQM0MBO Z0Z0SRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2814

0s0lrZkZ ZnZ0ZpZp 0Z0o0Zpa o0oPZbZn QZPZNO0Z Z0A0O0Z0 PZ0M0ZBO Z0Z0SRJ0 a

c

rZrZqZkZ o0Z0Zpop 0o0Zpm0Z O0Z0Z0Z0 nZPO0Z0Z Z0Z0ZNZ0 0Z0AQOPO S0ZRZ0J0 a

2811 8

b

2813

0ZrZ0Z0j o0ZpZrZp no0Z0opZ Z0lPo0Z0 0Z0ZPZQZ ZPZ0M0O0 PZ0Z0O0O Z0ZRZRJ0 a

rZ0Z0skZ Znlbapop pZ0o0m0Z ZpZPo0Z0 0ZpZPZ0Z ZPO0ZNMP PZBZ0OPZ S0AQS0J0 a

2810 8

Knight on the edge of the board

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lra0Z ZnZbZpZk 0Z0o0mpo ZpoPo0Z0 0Z0ZPZ0Z ZPO0ANMP 0ZBL0OPZ S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2815 8 7 6 5 4 3 2 1

2818

0s0Zqs0j onZ0m0ap 0o0obZpZ ZPo0opA0 0ZPZPZ0Z O0MPZ0O0 0Z0ZNOBO ZRL0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2820

0lrZ0Z0Z Z0Z0apj0 0o0ZpZps oPZpOnZp 0Z0O0O0Z mPZ0ZNOP 0Z0L0AKZ ZBZRZRZ0 a

c

nZ0lrZkZ ZpanZpop 0Z0o0Z0Z ZBZPo0Z0 0O0ZPZ0Z Z0L0Z0M0 0Z0A0OPO Z0S0Z0J0 a

2817 8

b

2819

0ZrZ0skZ ZbZna0op pm0Zpo0Z ZpZ0Z0Zq 0O0ZPA0Z O0ZBLNZP 0Z0ZNOPZ Z0S0ZRJ0 a

0sblnZkZ Z0Z0s0op pm0a0o0Z Z0oPo0Z0 Po0ZPZ0Z ZPZ0ZNZ0 0A0M0OPO Z0SQSBJ0 a

2816 8

Knight on the edge of the board

c

d

e

f

g

h

8 7 6 5 4 3 2 1

nsbZrZkZ ZpZnZpap pZ0o0ZpZ O0oPZ0A0 0Z0ZPONZ ZPM0Z0Z0 0Z0SBZPO Z0S0ZKZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2821 8 7 6 5 4 3 2 1

2824

0sbZrZka ZplnZpZp pm0o0ZpA Z0oPZ0Z0 PZ0ZPO0Z Z0M0Z0Z0 0O0oBMPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2826

0ZrZkZ0s o0mpapo0 qo0ZpZ0o Z0ZnO0Z0 0Z0ONZ0Z O0Z0ZNZ0 0OQA0OPO S0Z0S0J0 a

c

0s0Z0skZ Z0oqopZ0 0m0o0apo ZNZPZ0Z0 PO0MPZ0Z Z0Z0Z0O0 0Z0ZQOKZ S0Z0ZRZ0 a

2823 8

b

2825

0ZrZ0skZ o0Z0l0Z0 0mpZ0o0Z Z0MpZbop PL0OpZ0Z ZPZ0O0A0 0Z0Z0OPO Z0S0ZRJ0 a

0sblrZkZ Zpo0Zpa0 0m0Z0Zpo ZpZ0o0Z0 PZ0mNZ0Z Z0MPA0O0 0Z0ZPOBO Z0SQZRJ0 a

2822 8

Knight on the edge of the board

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0skZ Z0oqopZ0 0m0o0apo ZNZPZ0Z0 PO0MPZ0Z Z0Z0Z0O0 0Z0ZQOKZ S0Z0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2827 8 7 6 5 4 3 2 1

2830

rZ0s0ZkZ Z0Z0Znop pZpZ0ZnZ ZpZ0ZBZ0 0Z0O0Z0Z ZPZ0Z0ZP 0O0Z0ZPJ S0A0ZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2832

rZ0Z0skZ opZbZ0op 0l0Z0Z0Z Z0Zpm0Z0 0O0a0Z0Z O0Z0Z0ZP RZ0ZBOPZ Z0AQZRJN a

c

0lrZ0skZ Z0Zbapop pZ0o0m0Z mpZPo0Z0 0Z0ZPZ0Z Z0ZBANZP PO0MQOPZ S0Z0S0J0 a

2829 8

b

2831

rZbZrmkm o0l0Zpop 0opo0a0Z Z0Z0Z0MQ PZ0ZPO0Z Z0M0A0Z0 BOPZ0ZPO S0Z0ZRZK a

0ZrZ0skZ Zpl0apop 0m0o0Z0Z o0Z0m0O0 0Z0SPA0O ZNZ0Z0ZR POPZQZ0Z Z0J0ZBZ0 a

2828 8

Knight on the edge of the board

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zblrj0Z Z0Z0Zpm0 pZ0o0Z0M ZroPZ0Zp 0ZNaPOpZ S0Z0Z0On 0O0Z0ZQO Z0ABZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2833 8 7 6 5 4 3 2 1

2836

rZ0l0skZ opZ0Z0ap 0Z0oPmpm Z0Z0o0Z0 0O0ZpZ0Z Z0M0Z0Z0 PZ0ABOPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2838

rZ0Z0s0j M0ZqZ0Zp 0Z0o0m0a ZNoPZbZ0 0ZPZpZpZ S0Z0Z0Z0 PZ0ZBOPO Z0ZQZRJ0 a

c

0Z0ZrZ0Z o0ZqZ0Zk 0o0o0apo m0oPZpZn 0ZPZ0Z0Z Z0ZBZNZ0 POQA0OPO S0Z0Z0J0 a

2835 8

b

2837

rZ0Z0ZkZ MpZnZpap 0ZpZbZpZ Z0Z0o0Z0 0OPZPZ0Z Z0Z0APZ0 PZ0ZBZPO S0Z0Z0J0 a

0m0Z0s0j Z0o0Z0Z0 0ZPo0Zpa Z0ZNo0l0 0OBZPZ0o Z0Z0Z0ZP 0Z0ZQZPZ ZRZ0Z0J0 a

2834 8

Knight on the edge of the board

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZqskZ o0o0Z0a0 nZPobZpo Z0Z0o0Z0 0OBZpZ0Z ONZ0A0ZP 0Z0Z0OPZ S0ZQJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2839 8 7 6 5 4 3 2 1

2842

0Z0Z0l0Z o0jrZ0Z0 PobZpZ0o Z0ZpO0oP 0ZpZ0ZPm Z0O0Z0Z0 0ZPZQO0Z S0A0Z0JB a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2844

rZ0mrakZ Z0ZqZpon pZ0o0Z0o ZpZPo0Z0 0O0Z0Z0Z O0ZPA0ZP BZ0M0OPZ Z0SQS0J0 a

c

rZ0l0skZ obZ0opap 0onZ0mpZ Z0Z0Z0Z0 0ZBO0Z0Z O0M0ZNZP 0O0Z0OPZ S0AQS0J0 a

2841 8

b

2843

0Z0ZqZkZ o0Z0Z0a0 0o0ZpZpo Z0Z0Z0Z0 0ZQZ0O0Z Z0Z0Z0O0 PO0Z0ZBO Z0Z0m0J0 a

rZ0ZrZ0Z m0Zblpak pZ0o0mpo ZpZPo0Z0 0Z0ZPZ0Z ZPZ0ANMP PZBL0OPZ Z0ZRS0J0 a

2840 8

Knight on the edge of the board

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ opZbZpZp 0Z0Z0ZpZ Z0ZqZ0A0 nZpO0Z0Z Z0O0ZPZ0 PZQM0ZPO Z0Z0SRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2845 8 7 6 5 4 3 2 1

2848

rZ0ZrZkZ opZ0lpop 0ZbZ0m0Z m0ZpZ0Z0 0Z0O0M0Z O0ZBOPZ0 QZ0A0ZPO ZRZ0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2850

rsnZ0ZkZ Z0lbapop pZ0o0m0Z ZpoPo0Z0 PZ0ZPZ0Z Z0O0ZNMP 0OBZ0OPZ S0AQS0J0 a

c

rZqZ0skZ ZpZ0opap pZ0o0ZpZ m0oPZ0Zn 0ZPZPZ0Z ZPM0Z0Ob PAQM0OBO Z0Z0SRJ0 a

2847 8

b

2849

rm0lkZ0s o0Z0apop 0oPZpm0Z Z0ZpZ0Z0 0O0O0Z0Z Z0M0Z0Z0 PZ0Z0OPO S0AQJ0MR a

rm0l0ZkZ o0Z0Zpo0 bZ0Z0a0o Z0ZpM0Z0 0Z0O0A0Z O0Z0Z0Z0 0ZBZ0OPO ZRZRZ0J0 a

2846 8

Knight on the edge of the board

c

d

e

f

g

h

8 7 6 5 4 3 2 1

nZ0l0ZkZ Z0s0ZpZ0 pZ0o0OpZ ZpZPZ0Zp 0ZPZ0L0Z ZPZ0Z0ZB 0Z0Z0Z0O Z0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2851 8 7 6 5 4 3 2 1

2854

0Zrl0skZ Z0Z0opap 0mno0ZpZ ZpZ0Z0Z0 pZ0OPZ0Z OPZ0AQZ0 0ZBZ0OPO M0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2856

rZ0Z0s0j ZpZ0Z0op 0ZnZ0m0Z Z0ZBZ0Z0 pa0Z0ObZ Z0M0A0O0 PO0Z0Z0O M0J0ZRZR a

c

0Z0s0ZkZ obo0Zpop 0Z0Z0m0Z ZNZ0a0Z0 PZqZPZ0Z Z0MrZPZ0 0O0Z0LPO S0A0ZRZK a

2853 8

b

2855

rZnlrZkZ ZpZ0apop 0Z0Z0m0Z ZPOpZ0Z0 pZ0Z0Z0Z Z0Z0ANZ0 0OPL0OPO M0JRZ0ZR a

0Z0Z0Z0Z Z0ZqZ0ak 0o0ZbZpo Z0onZpZ0 0Z0o0Z0O Z0ZPZBO0 0OQAPO0Z M0Z0Z0J0 a

2852 8

Knight on the edge of the board

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbs0ZkZ Zpl0Zpo0 pZ0ZpZ0o m0ZPZ0Z0 0ZPM0Z0Z Z0Z0Z0O0 PL0Z0OBO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2857 8 7 6 5 4 3 2 1

2860

rZ0Z0skZ Z0l0a0on pm0Z0o0o ZpZ0oPZ0 0ZpZ0ZPO Z0O0ZNZ0 POBZ0O0Z S0AQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2862

0Z0lrZkZ Z0ZrZpZp nZbo0ZpL o0Z0o0Zn PoPZPZ0Z ZPZ0MNZP 0ZBZ0OPZ Z0ZRS0J0 a

c

0ZrZ0lkZ Zbl0apop pZ0o0Z0Z mpZPZ0Z0 0Z0ZPo0Z Z0Z0ZNZP POBZROPZ S0ZQZNJ0 a

2859 8

b

2861

0Z0Z0ZkZ m0ZqZpan ro0o0ZpZ Z0oPo0Zp PZPZPZ0O ZQM0M0O0 0Z0A0OKZ ZRZ0Z0Z0 a

0Z0Z0ZkZ o0Z0Zpa0 0Z0s0Zpo ZqZ0Z0Z0 NZ0Z0Z0Z Z0Z0Z0Z0 POQZ0OPO Z0S0Z0ZK a

2858 8

Knight on the edge of the board

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZkZ Z0ZbaqZp 0Z0ZpZpZ ZpZpA0Z0 nZ0Z0O0O Z0ONLBZ0 0O0Z0ZPZ Z0ZRZ0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2863 8 7 6 5 4 3 2 1

2866

rZ0Z0Z0s opZnjpop 0ZbMpm0Z l0Z0Z0A0 0ZBZPO0Z Z0O0Z0Z0 PZ0L0ZPO S0Z0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2868

rZ0Z0skZ Z0ZqZpop nZ0MpZ0Z o0OpZ0Z0 0O0Z0Z0Z O0Z0Z0Z0 0Z0L0OPO S0Z0ZRJ0 a

c

rm0l0skZ opm0Z0op 0Z0Z0ZbZ Z0ZpOpM0 0Z0O0Z0Z Z0MBZ0ZP PO0L0ZPZ Z0S0ZRJ0 a

2865 8

b

2867

rZ0ZrmkZ opZblpop 0Zpo0Z0Z Z0Z0Z0Z0 0OPO0Z0Z Z0MBO0Z0 PZQZ0ZPO Z0Z0SRJ0 a

rZ0Zqs0j o0Z0Zbo0 0o0Z0Zno Z0opOpZ0 0a0O0O0Z Z0M0Z0OP POQZBZ0Z ZKZRZNS0 a

2864 8

Knight on d6, e6 or d3, e3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

bZrZrZkZ Z0Znl0o0 0ZpZpo0o o0O0Z0Z0 Po0O0LNO Z0Z0Z0O0 0O0Z0O0Z Z0SRZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2869 8 7 6 5 4 3 2 1

2872

rZ0sbZkZ ZpZnlpZp pZpZpZpZ Z0O0M0Z0 0Z0OBO0Z ZPZ0Z0Z0 PZ0ZQZPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2874

rZ0s0Z0Z Z0Znl0jp pZpZ0opZ Z0Obo0Z0 0ONZ0Z0Z O0Z0L0Z0 0Z0ZBOPO Z0SRZ0J0 a

c

rmbZ0ZkZ opZ0ZpZp 0ZpZ0ZpZ Z0Z0s0Z0 0Z0ZPZ0Z ZPM0Z0Z0 0O0ZBOPO S0Z0ZRJ0 a

2871 8

b

2873

rZ0Z0Z0Z oplbZ0ak 0ZpMrmpo Z0O0o0Z0 0Z0Z0Z0Z Z0Z0ZNOP POQZ0OBJ Z0ZRS0Z0 a

0Z0s0ZkZ opZ0l0o0 0ZpZ0obo Z0Orm0Z0 0ONZpZ0Z Z0Z0Z0O0 PL0SPOBO Z0ZRZ0J0 a

2870 8

Knight on d6, e6 or d3, e3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZbZ0Zpap pZpZ0ZpZ Z0Ono0Z0 qo0Z0Z0L Z0Z0ANZP PO0ZBOPZ Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2875 8 7 6 5 4 3 2 1

2878

0Z0s0ZkZ opZ0lpa0 0ZpZ0ZnZ Z0Z0obo0 0ZPZNZ0o O0Z0OPZ0 0O0ZBZPO Z0L0ARJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2880

rZbZkm0s opZqZ0a0 0ZpZ0ZnZ Z0O0ZpZp 0ZBZpMpO ZQM0O0Z0 PO0Z0OPZ S0A0J0ZR a

c

rZ0ZrZkZ Z0lnZpa0 0opZ0mpo Z0O0obZ0 0O0Z0Z0A Z0M0O0Z0 0Z0MBOPO Z0LRZRJ0 a

2877 8

b

2879

rZbZ0Z0s ZpjnZpap pZpZ0ZpZ Z0Z0o0Z0 0ZPZ0Z0Z M0M0Z0O0 PO0SPOBO Z0J0Z0ZR a

0Z0srmkZ Zbl0ZpZ0 0opZpZpZ o0O0Z0Mp 0O0O0Z0O Z0Z0Z0Z0 PZQZ0OPZ ZBZRS0J0 a

2876 8

Knight on d6, e6 or d3, e3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZbskZ opZ0ZpZp 0Zpl0ZpZ Z0Z0M0Zn 0ZPO0Z0Z ZBZ0S0ZP PL0Z0OPZ Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2881 8 7 6 5 4 3 2 1

2884

0s0Z0skZ o0l0Z0Z0 bZpMpZpZ Z0o0OpZp 0ZPZ0O0O ZPLRZ0O0 PZKZ0Z0Z Z0ZRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2886

rZbZrmkZ ZpZ0lpop 0ZpZ0m0Z Z0Opo0Z0 0Z0O0ZPZ ZPM0O0MP 0Z0L0OBZ Z0Z0SRJ0 a

c

rZ0ZrmkZ o0Z0Zqop 0ZpZpo0Z Z0O0ZnZ0 0ZQZNZ0Z Z0Z0ZNZ0 PO0Z0OPO S0Z0S0J0 a

2883 8

b

2885

rZbZrZkZ opm0Z0lp 0Zpo0Z0Z Z0Z0Z0Zn 0OPZ0o0Z Z0MBZPZ0 PZ0LNZPO ZRZ0ZRJ0 a

bZrZ0skZ o0Z0apop 0ZpZpZ0Z l0OnM0Z0 0Z0O0A0Z Z0Z0Z0O0 PZQZ0OBO S0ZRZ0J0 a

2882 8

Knight on d6, e6 or d3, e3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rl0Z0skZ Z0Znopap 0Z0o0ZpZ ZboPZ0Z0 0Z0ZPA0Z O0Z0ZNO0 0O0Z0OBO ZRZQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2887 8 7 6 5 4 3 2 1

2890

rs0Z0ZkZ Z0Znopa0 qZ0o0m0o Z0oPZ0o0 0Z0ZPZ0Z Z0M0ANZ0 POQZ0OPO ZRZ0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2892

rZ0l0skZ ZpZnZpan pZ0o0Zpo Z0oPZ0Z0 PZ0ZPOPO Z0M0ZBZ0 0O0Z0J0Z S0AQZ0ZR a

c

rZrZ0ZkZ Z0ZnopZp qZ0o0ZpZ Z0oPZ0Z0 0Z0aPO0Z OPMnM0Z0 0ZQA0ZPO ZRZ0ZRZK a

2889 8

b

2891

0Z0ZrZkZ Z0snZpan pZ0o0Zpo Z0ZPZ0Z0 0lpZPOBO Z0M0Z0A0 0OQZ0ZPZ Z0Z0SRJ0 a

rZbZ0Z0s Z0lkZ0op 0Z0Mpo0Z o0Z0O0ZB 0oPo0Z0Z A0Z0Z0O0 PO0ZQZ0O Z0J0Z0ZR a

2888 8

Knight on d6, e6 or d3, e3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rs0Z0ZkZ Z0Z0Zpap 0Z0o0mpZ Z0oPZ0Z0 PZ0mPZ0Z Z0M0Z0Z0 0O0Z0O0O S0ABZKZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2893 8 7 6 5 4 3 2 1

2896

0Z0s0skZ Z0Z0Zbop 0o0Z0l0Z oQZpm0Z0 0Z0MpZ0Z OPZ0O0O0 0Z0Z0OBO Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2898

rl0Z0s0j ZpZbZ0Zp 0ZnZpZpO ZNZ0OpZ0 pOpO0O0S O0Z0A0Z0 0Z0Z0ZPZ Z0SQJ0Z0 a

c

rZ0Z0Z0j opZ0ZrZp 0l0oNmna Z0ZPo0Z0 QZ0ZPo0Z Z0ZNZPZb PO0ABS0O Z0S0Z0J0 a

2895 8

b

2897

rZbl0skZ opZ0m0a0 0ZpZ0Z0o ZNOPo0o0 0ZNZPo0Z A0Z0ZPZ0 PZ0ZQZPO S0Z0ZRJ0 a

0Z0ZrskZ ZpZ0l0ap pZ0o0ZpZ Z0ZPm0Z0 PZ0M0A0Z ZPZ0Z0ZP 0Z0L0ZPZ Z0ZRS0J0 a

2894 8

Knight on d6, e6 or d3, e3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZ0Z o0Z0l0j0 0o0o0mpZ Z0oPo0Mp 0Z0ZPZ0Z ZPZPZ0O0 PZ0Z0LKO Z0Z0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2899 8 7 6 5 4 3 2 1

2902

rmbZ0ZkZ opoqZrZp 0Z0oNmpZ Z0ZPo0Z0 0ZPZ0Z0Z Z0MBZPO0 PO0Z0Z0O S0L0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2904

0s0Z0skZ m0l0a0op 0m0o0o0Z o0ZPoNZ0 0Z0Z0Z0Z A0OQZNZP PZ0Z0OPZ ZRZ0S0J0 a

c

0Z0ZrZkZ Zbo0l0ap 0o0o0ZpZ Z0ZPZpZ0 0OPMBO0Z Z0Z0L0M0 0Z0Z0Z0O Z0Z0ZRZK a

2901 8

b

2903

rm0Z0ZkZ obZ0s0Z0 0o0oNl0o Z0oPZPo0 0Z0ZBZ0Z Z0O0Z0O0 PZ0L0Z0O S0Z0ZRJ0 a

0ZrZ0ZkZ Znl0Z0ap pZ0o0Z0Z OpoPorZ0 0O0Z0Z0Z Z0O0ANZP 0Z0Z0O0J S0ZQS0Z0 a

2900 8

Knight on d6, e6 or d3, e3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0lnakZ o0Z0s0Zp 0Z0o0ZpZ Z0oPo0M0 0ZPZ0Z0Z O0Z0Z0ZQ 0Z0A0OPO ZRZ0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2905 8 7 6 5 4 3 2 1

2908

0sqZ0Z0Z Z0Z0okZp ps0oNZpZ ZpoPm0Z0 0ZPZ0Z0Z ZPZ0Z0O0 PZQZ0O0O ZRZ0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2910

0ZrZnZ0Z opZ0Zrj0 0Z0o0apo Z0ZPZ0Z0 0Z0ZNM0Z ZPZKZ0Z0 PZ0Z0ZPO Z0ZRZRZ0 a

c

0Z0sra0j Z0o0ZqZ0 pZ0Z0o0Z ZpOPZPZp 0O0Z0opZ Z0Z0ZNZ0 0ZQS0OPO Z0ZRZ0ZK a

2907 8

b

2909

0s0l0s0Z opo0Z0ak 0Z0o0Z0o ZPZPmpob PZ0Z0Z0Z AQZ0O0O0 0Z0ZNOBO ZRZRZ0J0 a

0ZrZka0s Z0ZnZpop pZ0ZbZ0Z ZpZ0Z0Z0 0ZpMPZ0Z Z0M0APZ0 PO0Z0ZPO S0ZRZ0J0 a

2906 8

Knight on d6, e6 or d3, e3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0skZ Z0Z0Z0o0 0Z0l0o0o o0Z0aPZ0 Po0Z0M0Z ZPZ0Z0Z0 0O0Z0LPO ZKZ0S0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2911 8 7 6 5 4 3 2 1

2914

0Zrl0Z0j obZ0Z0op nopZ0o0Z Z0Z0ZPZ0 0Z0O0Z0Z ZQONo0O0 PZ0Z0ZBO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2916

rZ0Z0ZkZ obZ0Z0on 0ZpS0o0o l0Z0ZPZ0 No0MrZPZ ZPZ0Z0L0 PZPZ0Z0Z ZKZ0Z0ZR a

c

0sbZrZ0Z o0ZnZpj0 0mpo0ZpZ lpZ0o0Op 0Z0OPO0O O0M0Z0Z0 0OPL0M0Z ZKZRZBZR a

2913 8

b

2915

0Z0Z0Z0j Z0Z0s0Zp pZrZNopZ ZpZ0aPZ0 0ZnA0ZPZ Z0O0Z0Z0 PZ0ZRZ0O Z0Z0S0ZK a

0s0sbZkZ o0l0Zpo0 0ZpZpm0o Z0O0M0Z0 0Z0O0Z0Z Z0ZBL0O0 PZ0Z0O0O ZRZ0ZRJ0 a

2912 8

Knight on d6, e6 or d3, e3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

qZrarZkZ Z0ZnZpop 0Z0Z0m0Z O0ZpZ0Z0 0ZpZ0Z0Z O0A0ONZ0 0Z0ZQOPO ZNSRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2917 8 7 6 5 4 3 2 1

2920

0ZrZ0s0j ZpZ0ZpZp pZ0o0apZ Z0ZQl0Z0 0OPZPZ0Z Z0Z0Z0Z0 PZ0ZBZPO Z0S0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2922

rZ0lrZkZ Z0Z0Z0Zp pZpZbopZ Z0ZpZ0Z0 0Z0Z0Z0O O0A0Z0L0 0O0Z0OPZ Z0ZRZRJ0 a

c

0s0a0skZ ZpZ0Zpop 0Z0o0Z0Z o0ZNoPZ0 Pm0ZPZPO ZPZ0Z0Z0 0O0JBZ0Z Z0S0Z0ZR a

2919 8

b

2921

rZblrZkZ o0o0Z0op 0ZpZ0o0Z Z0ApO0Z0 0Z0Z0O0Z Z0Z0Z0Z0 POPZQZPO S0Z0ZRJ0 a

0ZrZ0ZkZ ops0Z0o0 0l0Zpa0o Z0ZpZ0Z0 0Z0Z0Z0Z Z0Z0O0Z0 PO0SBOPO ZQZ0ZRJ0 a

2918 8

Opposite coloured bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0a0Z Zpj0Z0Z0 0o0oBO0o Z0ZRZ0Z0 0Z0Z0O0o Z0Z0S0Z0 POPZ0s0Z Z0J0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2923 8 7 6 5 4 3 2 1

2926

0ZrZ0ZkZ Z0Z0o0ap pZ0o0ZpZ Z0mPZpZP 0ZPZ0OPZ Z0ZKABZ0 PZ0Z0Z0Z Z0Z0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2928

rZbZ0ZkZ opZ0apop 0Z0ZpZ0Z s0Z0Z0Z0 0Z0O0Z0Z Z0M0A0Z0 PO0Z0OPO Z0SRZ0J0 a

c

rs0Z0AkZ Z0ZbZpZp pZ0Z0OpZ Z0Zpo0Z0 pZPZPZ0L O0Z0Z0Z0 0Z0l0ZPO S0Z0ZRZK a

2925 8

b

2927

0Z0ZrZkZ Z0o0lpop pZborZ0Z A0o0Z0Z0 0ZPZPZ0Z OPZ0ZPZ0 0Z0L0ZPO ZRZ0S0J0 a

rZ0ZqskZ obZ0Z0op 0Z0Spo0Z SpZ0Z0Z0 0Z0Z0O0Z ZPZ0Z0Z0 0OPZ0ZPO Z0AQZ0ZK a

2924 8

Opposite coloured bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Zrs Z0Z0j0Zp 0Z0opo0Z o0l0a0Z0 0o0ZPZ0Z Z0ZQZBO0 POPZ0Z0O ZKZRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2929 8 7 6 5 4 3 2 1

2932

0Z0s0s0Z Z0l0Zpj0 0ZpZ0apZ opZ0Z0Zp 0Z0Z0Z0Z OBO0ZQZ0 0O0Z0OPO Z0JRS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2934

rZ0Z0s0Z l0Z0m0a0 pZpLBo0j Z0Z0oPoP 0Z0Z0ZPZ O0M0Z0Z0 0O0Z0Z0Z Z0JRS0Z0 a

c

0ZRZ0akZ ZpZ0Z0Zp 0Z0l0ZpZ sBZPo0Z0 0Z0ZPZ0Z Z0Z0Z0Z0 0Z0Z0ZPO Z0Z0ZQJ0 a

2931 8

b

2933

rZ0l0skZ opZ0Zpo0 0ZbZ0Z0Z Z0ZpL0Z0 0Z0Z0Z0Z Z0Z0Z0Z0 PO0Z0OPO S0Z0S0J0 a

0Zrs0Z0j ZqZ0Z0ap 0Z0o0Z0Z Z0Z0Z0o0 0OPo0o0Z ZRZ0ZPZ0 0Z0LBZPO Z0ZRZ0ZK a

2930 8

Opposite coloured bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0srm0a0Z ZpZ0l0jp 0A0Z0opZ Z0o0o0Z0 PZBZPm0Z Z0Z0ZNZP 0OQZ0OPZ Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2935 8 7 6 5 4 3 2 1

2938

0s0Z0s0j Z0Z0Zpa0 0ZpZ0Z0o o0o0Z0o0 0ZBZPO0l ZPZ0Z0SP PZ0ZQZPJ Z0Z0ZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2940

0Z0a0Z0Z s0Z0Zpjp PZ0l0ZpZ Z0o0Z0Z0 0Z0o0Z0Z ZPZBZ0ZP 0Z0Z0OPZ S0Z0L0J0 a

c

0s0Z0skZ Z0Z0Zpop 0ZQZ0Z0a o0Z0o0Z0 0ZPZPZ0O Z0Z0Z0OB 0OqZ0O0Z Z0ZRZRJ0 a

2937 8

b

2939

0ZbZ0skZ ZpZ0Z0a0 0l0o0Z0o o0mPo0o0 0Z0ZNZ0Z Z0Z0Z0OP POQZ0ZPJ Z0ZRSBZ0 a

0s0s0ZkZ Z0L0Zpa0 0Z0o0ZpZ opZQs0Z0 0Z0ZPZ0Z O0O0Z0OB 0O0Z0O0Z S0Z0ZRJ0 a

2936 8

Opposite coloured bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0l0skZ Z0Z0apop 0Z0o0Z0Z o0sPo0Z0 BZ0Z0Z0Z Z0OQZ0Z0 0O0Z0OPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2941 8 7 6 5 4 3 2 1

2944

0Z0Z0s0Z l0Z0Zrjp pZ0obZpZ ZpZNo0a0 0O0ZBZ0Z O0ORZ0L0 0Z0Z0OPO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2946

rZbZ0skZ opZ0Z0Zp 0Z0ZpZpl Z0ZpO0Z0 0OnA0Z0O Z0OBZ0L0 PZ0Z0ZPZ S0Z0J0ZR a

c

rZbZ0ZkZ opZ0Z0Zp 0Z0ZpspZ l0ZpZ0M0 0ZpmnZ0Z O0O0Z0Z0 0ZPABOPO S0Z0LRJ0 a

2943 8

b

2945

rZbZ0skZ ZpZ0apop pZ0o0Z0Z l0ZPo0Z0 0Z0A0O0Z ZBZ0Z0Z0 POPZQZPO Z0JRZ0ZR a

0Z0s0ZkZ ZQZ0Zpo0 pZ0ZqZ0o Z0Z0ZbZ0 0a0Z0Z0O Z0M0A0O0 0O0Z0O0Z S0Z0Z0J0 a

2942 8

Opposite coloured bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lrZkZ o0o0Z0o0 0opZbZ0A Z0Z0Z0ZQ 0Z0Z0Z0Z Z0OPZ0O0 PZ0Z0O0O S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2947 8 7 6 5 4 3 2 1

2950

0ZrZ0s0j Z0ZqZ0ap pZ0o0Z0Z Z0ZBopZ0 0Z0ZPo0L ZPZ0Z0Z0 PZRZ0OPO Z0ZRZKZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2952

0ZrZkZ0s Zpo0Z0Zp 0o0Z0ZqZ Z0ZpObZ0 0Z0Z0Z0Z L0Z0Z0A0 PZ0Z0ZPO S0Z0ZRJ0 a

c

0ZrZ0skZ ZpZ0ZqZp pO0ZpZ0Z Z0ZpOpZ0 0ObA0L0Z O0Z0Z0Z0 0Z0Z0ZPO SRZ0Z0J0 a

2949 8

b

2951

0a0Z0skZ s0Z0Zpo0 pZQZpl0o ZpZ0Z0Z0 0Z0Z0Z0Z ZPZ0O0O0 PZ0ZBO0O Z0SRZ0J0 a

rZ0Z0Z0j Z0oqZrap 0o0o0Z0Z o0ZPZ0S0 PZPZBo0O ZPZ0ZPZ0 0Z0Z0ZQZ Z0J0Z0S0 a

2948 8

Opposite coloured bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

BZ0Z0ZkZ Z0Z0Zpop pZ0o0Z0Z l0Z0ZPa0 0o0L0Z0Z Z0Z0Z0Z0 POPZ0ZPO ZKZRs0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2953 8 7 6 5 4 3 2 1

2956

0s0Z0Z0Z ZqZ0opj0 0Z0o0a0o ZpZ0Z0Z0 0L0Z0Z0O ZPZ0O0Z0 PZRZBO0Z Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2958

0Z0lrZkZ Z0Z0Zpap QZ0o0mpZ Z0ZPZ0Z0 0o0Z0O0Z Z0Z0Z0O0 PZ0ZPZBO Z0Z0SNJ0 a

c

rZ0ZrZkZ o0Z0lpZp 0Z0Z0ZpZ Z0oPZPZ0 0o0aBZPZ Z0Z0Z0ZP POPZ0ZQZ Z0JRS0Z0 a

2955 8

b

2957

0Z0s0ZkZ o0Z0Lpop 0Z0ZpZ0Z lpZ0Z0Z0 0Z0ZPa0Z ZBZ0Z0Z0 POPZ0ZPO ZKZ0ZRZ0 a

BZ0Z0skZ o0Z0Zpop Qo0ZpZ0Z Z0Z0Z0Z0 0ZPZ0Z0Z Z0Z0Z0O0 PZ0l0O0O a0Z0ZRJ0 a

2954 8

Opposite coloured bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0s0j Z0Z0apo0 pZ0Z0Z0o ZpZPZ0ZR 0Z0o0Z0Z O0ZBl0ZQ 0OPZ0ZPO Z0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2959 8 7 6 5 4 3 2 1

2962

0Z0Z0Z0Z o0Z0Z0a0 rZ0Z0Z0j Z0Z0Z0lp 0ZPo0Z0Z Z0ZQZ0OB 0Z0ZRO0Z Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2964

0ZrZ0ZkZ o0ZbZ0op 0lpZro0Z Z0SpZ0Z0 0O0O0Z0Z O0Z0Z0AP 0Z0L0OPZ Z0Z0ZRJ0 a

c

rZ0s0ZkZ ZpZ0lpZp pZ0o0apZ Z0ZPZ0Z0 PZPZRZ0Z ZPZBZ0L0 0Z0Z0ZPO Z0S0Z0ZK a

2961 8

b

2963

0Z0Z0ZkZ o0ZqZrZp 0ZbZrZpZ Z0ZpApZ0 0o0O0L0O Z0Z0S0S0 PO0Z0OPZ Z0Z0Z0J0 a

0ZRZ0a0Z orZqZ0jp 0Z0o0ZpZ Z0ZPo0O0 0Z0ZBZQZ ZPZ0O0Z0 PZ0ZKZ0Z Z0Z0Z0Z0 a

2960 8

Opposite coloured bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0ZkZ Z0Z0ZpZp 0Z0ZpZpZ Z0ZpZ0Z0 0Z0ZqZ0O O0A0Z0S0 0ZbL0OPZ Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2965 8 7 6 5 4 3 2 1

2968

rZ0Z0ZkZ o0ZqZrZp 0o0ZpZpO Z0ZbA0Z0 0Z0OpZ0Z Z0O0Z0L0 PZ0ZROPZ Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2970

0s0ZkZ0s Z0Z0Zpap 0l0opo0Z Z0o0Z0Z0 0ZQZPO0Z ZBZ0Z0Z0 PO0Z0ZPO Z0JRZRZ0 a

c

0Z0Z0skZ ZpZ0ZpZp pZ0a0ZpZ Z0ZPZ0Z0 PZ0l0Z0Z Z0ZBs0Z0 0OPZ0LPO Z0Z0SRZK a

2967 8

b

2969

0Z0ZrZkZ l0Z0Zpop 0Z0o0Z0Z Z0ZPZ0O0 0o0Z0L0O ZPaPZ0Z0 0Z0Z0ZBZ Z0Z0ZRZK a

rZ0Z0Z0Z Z0o0lrok 0Z0ZbZRo o0ZpApZP 0Z0ZpL0Z O0Z0Z0Z0 0OPZ0OPZ Z0JRZ0Z0 a

2966 8

Opposite coloured bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ l0Z0Z0Zp ps0a0o0Z Z0Z0ZBZ0 0oRZ0O0Z ZPZ0Z0ZP 0ZQZ0ZPZ Z0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2971 8 7 6 5 4 3 2 1

2974

0Z0srZkZ opZnZpZ0 0ZpZpZpa Z0Z0Z0Zp 0ZPO0Z0O ZPZ0Z0O0 PA0Z0O0Z Z0ZRSBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2976

rZbZ0skZ ZpZ0Z0a0 pZpo0l0o Z0Z0o0ZQ 0OPZ0o0M Z0ZPZ0O0 PZ0Z0OBO ZRZ0ZRJ0 a

c

rmbZkZ0s opZ0Zpop 0Z0ApZ0Z ZPZ0Z0Z0 0Z0ZnZ0Z O0Z0ZNZ0 0Z0ZPOPO S0Z0JBZR a

2973 8

b

2975

0Zbs0ZkZ Z0Z0Z0ap pZpo0ZpZ Z0Z0Z0Z0 0APZNZ0Z Z0ZKZPZ0 PZ0Z0ZPO ZRZ0Z0Z0 a

0sbZ0s0j Z0Z0Z0ap 0Z0m0Z0Z ZpZ0oPZ0 0Z0Z0Z0Z Z0l0Z0Z0 PoBMQOPZ ZKZRZ0MR a

2972 8

A Pair of bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ opZbZ0ap 0Z0o0ZpZ Z0oPZpZ0 0ZPZnO0A ZPZ0S0ZP PZ0ZNZPJ Z0ZNZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2977 8 7 6 5 4 3 2 1

2980

rZ0s0ZkZ ZbZ0Zpop 0Z0Z0m0Z o0Z0o0Z0 Po0ZPZ0Z ZBZ0ZPZP 0O0Z0ZPZ S0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2982

0Z0srakZ Z0Z0ZbZp 0ZqZ0opZ opZ0o0Z0 0Z0oPZ0Z OPZQZNOP 0APZ0O0Z S0Z0S0J0 a

c

rZbs0Z0Z opZ0jpop 0Z0Mpm0Z Z0m0Z0Z0 0Z0ZPZ0Z O0A0ZPZ0 0O0Z0ZPO Z0ZRJBZR a

2979 8

b

2981

rZ0ZrZkZ Zponlpop 0Z0o0Z0Z o0Z0Z0Z0 0ZPZnZ0Z A0Z0Z0O0 PO0ZPOBO Z0SQZRJ0 a

rZ0Z0mkZ ZbZ0s0op 0opZ0Z0Z o0ZpO0Z0 PZ0Z0Z0Z ZPZ0S0O0 0APZ0ZBO Z0Z0S0J0 a

2978 8

A Pair of bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ Zplbmpop pZnZpZ0Z Z0Z0Z0Z0 0ZBZPO0Z ZNL0A0Z0 PO0Z0ZPO Z0S0ARJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2983 8 7 6 5 4 3 2 1

2986

0snZ0skZ Zpl0Zpop pZ0a0Z0Z Z0Z0Z0S0 PZpO0Z0Z Z0L0Z0ZP 0ABZ0OPZ Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2988

rZ0Z0mkZ opZrZbop 0ZpZ0o0Z Z0Z0Z0Z0 nZPO0Z0Z ONZ0Z0A0 0Z0Z0OPO Z0S0SBJ0 a

c

0lrZra0j obZ0Z0op 0o0Z0o0M mNZ0Z0Z0 0ZpZ0Z0Z Z0Z0ZQZ0 PA0Z0OPO ZBSRZ0J0 a

2985 8

b

2987

rZ0ZrZkZ obZ0Zpo0 0ZpZ0Z0o ZpapM0Z0 0Z0Z0O0Z ZBOPZ0Z0 PO0Z0ZPO S0Z0ZKZR a

0Z0Z0Z0Z ZpZnjpap pZ0o0mpZ Z0oPZ0Z0 PZPZ0A0Z Z0M0Z0ZP 0O0Z0OPZ Z0ZBZ0J0 a

2984 8

A Pair of bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZnZ0Z0s Zbs0Zko0 pZ0Z0o0Z Z0Z0o0Zp NZ0Z0m0O Z0ZBZPZ0 0OPS0ZPZ ZKZRZ0A0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2989 8 7 6 5 4 3 2 1

2992

rZ0Z0ZkZ o0Z0Zpap 0ZqZbZpZ L0A0o0Z0 0Z0o0Z0Z Z0ZRZPZ0 POPZ0ZPO Z0J0S0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

2994

0Z0Z0ZrZ o0Z0okZ0 0onZ0mpZ Z0o0Z0A0 0ZPZ0O0O Z0OBZ0S0 PZKZ0Z0Z Z0Z0Z0Z0 a

c

rZ0Z0Z0Z oponjpZp 0ZpZbmpZ O0M0o0Z0 0Z0ZPZ0Z Z0Z0APZP 0OPS0ZPZ Z0ZRZBJ0 a

2991 8

b

2993

0s0Z0ZkZ Z0ZbZpa0 pZ0Z0Zpo l0oPZ0Z0 0ZpZNZ0Z Z0Z0LPZ0 PO0S0ZPO ZKZ0Z0ZR a

rZbZkZ0s opZ0Zpop 0Z0ZpZ0Z m0Z0Z0Z0 0Z0Z0Z0Z O0O0A0O0 0Z0ZPO0O ZRZ0JBZR a

2990 8

A Pair of bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZ0Z0Z opl0ZkZ0 0Zpo0Zpo Z0Z0onZ0 0OPABZ0O Z0Z0Z0O0 PZ0L0O0Z ZRS0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

2995 8 7 6 5 4 3 2 1

2998

0Z0Z0AkZ Z0Z0Zpo0 0ZbMpZ0o Z0a0OPZ0 pZ0Z0Z0Z Z0Z0Z0ZP RZ0ZQZPJ Z0l0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3000

0Z0s0ZkZ ZpZ0ZpZp ro0obZpZ Z0o0Z0Z0 PZPZnZ0Z ZPA0Z0Z0 RZ0ZBOPO Z0ZRZ0J0 a

c

0ZrZ0j0Z Z0obZrZp 0Z0o0ZpZ opmPZ0Z0 0ZPA0o0Z ZPZ0ZPZ0 PZBJRZPO Z0Z0S0Z0 a

2997 8

b

2999

rZ0Z0skZ ZpZ0Z0op nZbZpl0Z Z0o0mpZ0 0ZPZ0M0Z OPL0APO0 0Z0Z0ZBO Z0ZRZRJ0 a

0s0l0s0j Z0Z0Z0op RZBZ0Z0Z ZPa0ZpZ0 0Z0ZpZ0Z ZQZbM0Z0 0Z0Z0OPO Z0S0Z0J0 a

2996 8

A Pair of bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZqZrj Z0ZbapZp 0Z0opo0Z Z0Z0Z0ZQ po0MPO0Z Z0Z0Z0OB POPZ0Z0O ZKS0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3001 8 7 6 5 4 3 2 1

3004

0Zks0a0s ZpobZpop pZnZ0Z0Z Z0o0Z0Z0 0Z0ZPZ0Z Z0Z0ANZ0 POPZNOPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3006

0ZkZra0s ZpobZ0op pZpZ0Z0l Z0Z0OpZ0 0Z0M0Z0Z Z0Z0ZPZ0 POPMQZPO S0Z0S0J0 a

c

rZ0ZrZkZ ZbZ0ZnZ0 pZ0opZpZ Z0Z0Z0Z0 0ZPZPZ0Z Z0M0a0Z0 PO0MBZKZ Z0ZRZRZ0 a

3003 8

b

3005

rZ0ZkZ0s ZpobZpop pZpZ0ZnZ Z0a0Z0Z0 0ZNZPZ0Z Z0Z0ANZP POPZ0OPZ S0Z0ZRJ0 a

0Z0srZkZ Z0l0mpo0 po0o0Z0o Z0mPZ0ZP 0Z0ZPO0Z Z0Z0ZQA0 PZ0Z0ZPZ ZBS0S0ZK a

3002 8

A Pair of bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ Zpl0mpop pZ0a0Z0Z Z0ZpZ0Z0 0Z0M0O0Z Z0O0AQZ0 PO0Z0ZPO SNZ0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3007 8 7 6 5 4 3 2 1

3010

rZ0l0Z0Z Zponm0Zk 0o0o0o0Z Z0Z0oPo0 0O0ZPZPZ O0ZPZBJ0 0ZPA0Z0Z S0ZQZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3012

rZ0Z0skZ oRZ0Zpop nZ0Z0m0Z Z0ZPZ0Z0 PZpZ0Z0Z Z0O0A0Zq 0ZQZBO0O Z0ZRZ0J0 a

c

0Zks0Z0s opZnZpZp 0ZpapobZ l0Z0Z0Z0 0ZBO0ZPZ Z0O0A0ZP PO0MQO0Z Z0JRZ0ZR a

3009 8

b

3011

rZ0Z0skZ opZ0ZpZp 0Z0ZbZ0Z ZRZ0a0o0 0Z0Z0Z0Z O0lBO0Z0 0Z0M0OPO ZQZ0J0ZR a

rmbl0s0j apopZpZp 0Z0m0OpZ Z0Z0Z0M0 0ZBZ0L0Z Z0Z0Z0Z0 PA0Z0OPO S0Z0ZKZR a

3008 8

A Pair of bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srZkZ opZ0Zpop 0a0ZqZnZ Z0o0Z0ZB 0Z0Z0Z0Z Z0OPZ0A0 PO0Z0ZPO S0ZQZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3013 8 7 6 5 4 3 2 1

3016

rZbl0skZ opZ0Z0Zp 0ZnZpZ0a ZBZpZ0Z0 0Z0O0Z0o Z0M0ZNZ0 POPZRJPO S0ZQZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3018

rZ0ZkZ0s ZblnZpZp pZ0ZpZ0L Z0o0Z0Z0 0ZPZ0Z0Z APZ0ZNO0 PZ0Z0OBO S0Z0Z0J0 a

c

0Z0ZrskZ opZbZpo0 0ZnZ0Z0o Z0ZqZ0Z0 0Z0o0A0L O0ZBZ0Z0 0OPZ0OPO S0Z0S0J0 a

3015 8

b

3017

0Z0ZrZkZ ZpZqm0Zp 0ZpZbopZ Z0Z0ZpZ0 0ZPO0ZPZ ZPAQZ0Z0 0ZBZ0OPZ S0Z0Z0J0 a

rZ0Z0skZ opZ0Z0op 0ZnZ0ZqZ Z0ZbZpZQ 0Z0Z0Z0Z O0ABZ0Z0 0O0Z0OPO Z0Z0SRJ0 a

3014 8

A Pair of bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZnZkZ ZpZ0Z0op pZqZ0o0Z Z0s0Z0Zb 0ZPZPZ0Z O0Z0ZPZ0 0AQSBO0O Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3019 8 7 6 5 4 3 2 1

3022

rZ0lrmkZ opZ0apop 0ZpZpm0Z Z0Z0Z0Z0 0ZBOPA0Z Z0M0ZQZP PO0Z0OPZ S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3024

0Z0s0Z0s ZpZ0jpop pZ0Zbm0Z Z0Z0Z0Z0 0Z0Z0A0Z Z0ZBZ0ZP POPZ0ZPZ Z0S0ZRJ0 a

c

rZ0Z0lkZ o0Z0Zpap 0Z0ZbZpZ L0Zpo0Z0 0Z0Z0Z0Z Z0Z0ZPZ0 POPZ0ZPO Z0JRZBZR a

3021 8

b

3023

rZ0Z0ZkZ ZpZbZ0op 0Z0o0a0Z o0ZPZpZ0 0Z0Z0Z0Z O0M0ZPO0 0O0ZBZ0O Z0S0Z0ZK a

rZrZbZkZ Zpo0Zpop 0Z0o0m0Z oPZ0Z0Z0 PZPZPO0Z Z0Z0Z0Z0 0Z0A0ZPO S0Z0SBJ0 a

3020 8

A Pair of bishops

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ ZpZ0opap 0Z0obZpZ o0Z0Z0Z0 PZ0ZPZ0Z ZPM0A0Z0 0O0Z0OPO ZRZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3025 8 7 6 5 4 3 2 1

3028

rZ0Z0l0Z o0Z0Zrak 0Z0o0ZpZ ZNoPo0Zp PZ0ZPZ0Z Z0Z0Z0OP 0S0L0OKZ Z0S0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3030

0ZrZ0ZkZ Z0Z0apop pZ0o0Z0Z Z0s0o0Z0 Po0ZPZ0Z ZPZPZNZ0 0Z0Z0OPO Z0S0S0J0 a

c

0ZrZ0Z0Z opZnapZ0 0ZpZko0o Z0Z0o0Z0 0ZPZ0Z0M ZPM0Z0O0 PZKZPO0O Z0ZRZ0Z0 a

3027 8

b

3029

0Z0skZ0s ZpZ0Zpo0 0ZpmpZ0o Z0Z0O0ZP pZ0O0ZPZ O0O0Z0Z0 0O0Z0Z0Z ZKARZ0ZR a

rZbl0s0Z oponZ0jp 0Z0o0ZnZ ZNZPZ0o0 0ZNZPo0Z Z0ZQZ0ZP POPZBZPZ S0Z0ZRJ0 a

3026 8

Strong knight versus bad bishop

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ Zpoqspop pZ0Z0Z0Z Z0ZnZ0Z0 0Z0O0Z0Z O0ZQO0ZP 0A0Z0OPZ Z0S0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3031 8 7 6 5 4 3 2 1

3034

rZrZ0ZkZ ZbZ0Zpop 0Z0Zpa0Z o0o0m0Z0 Po0ZPA0Z Z0Z0ZPZ0 0OPM0ZPO S0Z0SBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3036

0s0Z0j0Z ZpZ0opZ0 0Z0o0mpZ o0sPZ0Zp PZ0S0O0Z ZBO0Z0ZP 0O0S0ZPZ Z0J0Z0Z0 a

c

0ZnZ0L0Z ZpZ0Z0sk pZqZpZpo O0ZpOpZ0 0Z0O0OPZ Z0O0Z0ZP 0Z0A0J0Z ZRZ0Z0Z0 a

3033 8

b

3035

0Z0Z0skZ Zpobs0op pZ0l0o0Z Z0o0ZPZ0 0Z0ZPSPZ Z0O0ZNL0 PO0Z0Z0O Z0Z0S0J0 a

0Z0Z0Z0j Z0Z0lpsp 0Z0Zpo0Z o0abZ0Z0 0o0Z0Z0L ZPZBONZ0 PZ0Z0OPO Z0S0ZKZ0 a

3032 8

Strong knight versus bad bishop

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZkZrZ Z0l0apop pZbo0m0Z ZpZ0oPA0 0Z0ZPZ0Z ZBM0Z0L0 POPZ0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3037 8 7 6 5 4 3 2 1

3040

0ZbZ0Z0Z Z0Z0Zkop pZ0Zpo0Z ZpMqZ0Z0 0O0Z0O0Z Z0L0Z0O0 PZ0ZPJ0O Z0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3042

0j0Z0Z0s opZ0l0Z0 0ZnZno0s Z0o0oRo0 PZPoPZPZ ZPZNZ0ZP 0ZPZQZBZ Z0Z0S0J0 a

c

0Z0lrZkZ ZpZ0ZpZp pZrZbZpZ Z0ZpZ0Z0 0Z0O0ZPZ ZPM0SPZP PZ0S0LKZ Z0Z0Z0Z0 a

3039 8

b

3041

rZ0l0j0s ZbZ0ZpZ0 pZ0ZpZpZ Z0ZpOnZ0 0o0Z0O0O ZNZ0Z0ZB POPZ0L0Z AKZRZ0ZR a

rZ0ZrZkZ opZ0apop 0Z0o0m0Z Z0Z0oPA0 0ZqZPZ0Z Z0M0Z0Z0 POPZ0ZPO S0Z0LRJ0 a

3038 8

Strong knight versus bad bishop

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Zbj0l Z0onlpZ0 0o0o0mpZ oNZPZ0L0 0ZPZPZPs Z0Z0Z0Z0 POBZ0ZRM Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3043 8 7 6 5 4 3 2 1

3046

0ZrZ0ZkZ ZpZbs0op pl0ZpZ0Z Z0ZpO0Z0 0Z0MpOPO ZPO0O0Z0 0Z0J0Z0Z SQZ0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3048

rZ0Z0skZ Z0ZblpZp 0Zno0apZ o0Z0o0Z0 PoPZPZ0Z ZPZ0ZNZ0 0Z0ZBOPO ZRAQZRJ0 a

c

rZ0s0ZkZ o0Z0Zpo0 0ono0l0o Z0Z0Z0Z0 0ZPO0O0Z Z0ZQZ0Z0 PA0Z0ZPO Z0S0ZRJ0 a

3045 8

b

3047

rZbZ0s0j opo0lpo0 0Z0Z0anZ Z0Z0o0o0 0ZNZPZ0Z ZBO0ZNZP PO0ZQOPZ Z0ZRS0J0 a

qZ0s0ZkZ ZbZ0Zpo0 pZpZrZno ZpS0ZNZ0 0O0OBm0Z O0Z0Z0MP 0Z0L0OPZ Z0S0Z0ZK a

3044 8

Strong knight versus bad bishop

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0l0skZ Z0Z0Zpap pm0MbZpZ Z0oNo0Z0 PZBZPZ0Z Z0Z0ZPZ0 0OQZ0ZPO ZKZRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3049 8 7 6 5 4 3 2 1

3052

rZ0Z0mkZ opZ0spap 0ZpM0ZqZ Z0Z0o0Z0 0ZPZ0Z0Z Z0Z0A0OP PO0ZQO0J Z0ZRS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3054

rZ0Z0Z0j opZnlrap 0Z0oNZbZ Z0oPo0Zn 0ZPZ0Z0Z ZPM0A0Z0 PZ0LBO0O Z0Z0ZRSK a

c

0ZrZ0skZ opo0Zpa0 0Z0o0Z0o Z0mPo0l0 0ZPZPZ0M Z0M0Z0O0 PO0Z0ZPZ S0ZQJ0ZR a

3051 8

b

3053

rZbZ0ZkZ o0Z0lpop pZpZpa0Z Z0OrZ0Z0 0Z0O0A0Z O0Z0ZNZ0 0O0Z0OPO S0ZQZRJ0 a

0ZrZ0Z0s opo0Zpak 0Z0o0Z0o Z0mPoNZ0 0ZPZPl0Z Z0M0ZQZ0 PO0ZKZPZ S0Z0Z0ZR a

3050 8

Strong knight versus bad bishop

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0Z0skZ Z0Z0l0a0 pZpZ0o0Z M0Zpo0o0 0OPZPZQZ Z0Z0Z0O0 PZ0Z0ZPJ S0ZNZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3055 8 7 6 5 4 3 2 1

3058

0ZrZrakZ Zbl0Zpop pZ0m0ZnZ ZpZpM0A0 0Z0O0Z0O ZPZ0MPZ0 PZBLRZPZ Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3060

rZ0Z0ZrZ Zpo0mkZ0 0Z0a0ZpZ o0o0opSp PZNZPZ0Z Z0ZPAPZP 0OPZKO0Z Z0Z0Z0S0 a

c

0ZrZ0skZ o0ZqZ0Zp 0Z0o0o0Z a0mPoNoP PZpZPZPZ L0O0APZ0 0Z0Z0Z0Z SRZ0ZKZ0 a

3057 8

b

3059

0Z0Z0skZ opZbZ0op 0m0Zps0Z Z0ZpZ0Z0 0ZnM0O0O Z0M0ZRZ0 POPZ0ZPZ ZKZRZBZ0 a

0Z0Z0ZkZ Z0orZpop 0o0Zra0Z o0o0o0Z0 PZ0mPZ0Z ZPAPM0OP 0ZPZ0OKZ S0Z0S0Z0 a

3056 8

Strong knight versus bad bishop

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrakZrZ Z0Z0ZpZ0 0Zbo0o0o Z0ZBoPZ0 po0ZPZ0Z ZPZ0S0O0 PZPZ0Z0O ZKMRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3061 8 7 6 5 4 3 2 1

3064

rZ0Zqs0j Z0Z0Zpa0 0ZpL0Z0o o0O0o0Z0 PoRZPo0Z Z0Z0ZNZP 0O0Z0OPZ Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3066

0j0s0Z0Z ZbZ0Z0Z0 BZ0Zro0Z Z0Z0oNa0 0l0oPZ0o Z0Z0ZRZ0 0OQZ0ZPO ZKZRZ0Z0 a

c

0Z0s0j0Z ops0ZpZ0 0anl0o0Z Z0Z0o0Z0 0Z0oBZ0Z O0ZQONZ0 0O0Z0OPO ZKSRZ0Z0 a

3063 8

b

3065

0Z0skarZ opZ0mpZp 0Z0Z0o0Z Z0Z0oNZ0 0Z0ZPZ0Z Z0O0Z0O0 PO0M0Z0O S0ZKZ0ZR a

0sblrZkZ ZpZnZpa0 pM0o0Zno O0oPZ0o0 0Z0ZPZ0Z Z0Z0MPZ0 0O0ABZPO S0ZQZRJ0 a

3062 8

Strong knight versus bad bishop

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0l0ZrZkZ ZpZnZpa0 0Zpo0Z0Z s0ZPo0op PZPZPm0Z Z0M0A0ZP 0ZQZ0OPM S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3067 8 7 6 5 4 3 2 1

3070

0ZrZ0skZ opZqZpa0 0m0o0Z0o Z0ZPo0o0 0Z0ZPm0Z Z0M0M0A0 PO0Z0OPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3072

rZnZqZ0j ZpZ0Z0Zp pZ0orapZ Z0Z0o0Z0 PO0ZPoPZ ZQM0ZPZ0 0Z0Z0ZKO S0A0ZRZ0 a

c

0ZbZrZ0Z ZpZ0l0Z0 pZ0ZPZkZ Z0ZpZpo0 0Z0O0O0Z O0Z0L0Op 0O0Z0Z0M Z0Z0S0J0 a

3069 8

b

3071

0ZkarZ0s ZpZ0lpZp pZpo0ZnZ Z0Z0Z0Z0 0Z0OPZNZ Z0Z0ZQON POPZ0Z0Z ZKZ0ZRZR a

0s0l0skZ ZpZnZpZp 0Z0o0ZpZ oPZPZ0Z0 PZ0L0Z0Z Z0Z0S0Z0 0Z0Z0OPO Z0Z0SBJ0 a

3068 8

Strong knight versus bad bishop

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0arZkZ o0ZqZ0op 0Z0o0Z0Z Z0oNZpZ0 0Z0Z0Z0Z ZPZ0Z0L0 PZPZ0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3073 8 7 6 5 4 3 2 1

3076

0a0ZqZrZ ZpZ0ZbZk 0ZpZpZ0o Z0OpZpZ0 0O0OnM0Z Z0ZQOBO0 0Z0Z0Z0O Z0Z0ARZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3078

rZ0ZrZkZ Zpo0l0Zp 0Z0o0ZpZ o0ZPonZP 0ZPZQZ0Z Z0Z0Z0O0 PO0ZBO0Z S0Z0J0ZR a

c

0Z0ZrZ0Z ZpZ0ZpZk pZpZ0sqZ Z0AnZ0o0 PZ0OpZPo ZPZ0O0ZP 0ZRZ0OQJ Z0S0Z0Z0 a

3075 8

b

3077

0Z0Z0Z0s o0j0a0op 0ZpZ0o0Z Z0Z0o0Z0 0ZNZ0Z0Z Z0O0Z0Z0 PO0ZKOPO Z0ZRZ0Z0 a

rZ0lrZkZ o0Z0Z0Zp 0ZpZ0ZpZ Z0OpZpZ0 0o0OpO0Z ZPZnO0ZP PZQZ0ZPZ Z0ZRARJ0 a

3074 8

Strong knight versus bad bishop

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ o0Z0ZpZp 0o0o0ZpL Z0mPZ0Z0 0ZPZ0Z0Z Z0ZBZRZ0 PO0Z0ZPO S0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3079 8 7 6 5 4 3 2 1

3082

0s0Z0skZ m0ZqZ0op 0Z0obo0Z opZNo0a0 0Z0ZPZ0Z M0O0Z0L0 PO0ZBOPO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3084

0Z0Z0skZ opl0Zpop 0ZnZpZ0Z Z0Z0Z0Z0 0Z0Z0Z0Z Z0L0Z0O0 PO0ZPOBO Z0JRZ0Z0 a

c

rZ0lrZkZ Zpo0Zpop pZna0m0Z Z0Z0Z0Z0 PZ0OpZ0Z Z0Z0O0M0 0O0A0OPO S0ZQMRJ0 a

3081 8

b

3083

0ZrZkZ0s Z0l0apo0 pm0o0m0Z Z0Z0oPZ0 RZ0ZPZ0o ZNM0A0ZP 0OPZ0SPZ Z0ZQZ0J0 a

0Z0ZrZkZ Z0mnZ0lp 0o0o0ZpZ Z0oPZpZ0 0ZPZ0O0Z Z0M0Z0Z0 PZBL0ZPO ZRZ0Z0J0 a

3080 8

Exchange of a piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opZnZpo0 0ZbZpZ0o Z0Z0O0Z0 0ZBZ0Z0Z O0M0Z0Z0 0O0ZQOPO S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3085 8 7 6 5 4 3 2 1

3088

rZbl0skZ opmnZ0a0 0Z0o0Z0o Z0oPZpZ0 0ZPZpO0Z O0M0A0ZN 0O0ZBZPO S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3090

rZbZkZ0s o0Z0mpop 0onZpZ0Z Z0ZpO0Z0 qZ0O0Z0Z O0AQZNZ0 0ZPZBOPO S0Z0J0ZR a

c

0ZrZrZkZ opZbZpop 0a0Z0m0Z Z0Zpl0Z0 0Z0M0Z0L ZPZ0O0O0 PARZ0OBO A0Z0ZRJ0 a

3087 8

b

3089

0s0ZkZ0s opZ0mpo0 0ZnZpZ0o Z0ZpO0Z0 0Z0O0ZPO l0Z0Z0ZB PZ0ZQOKZ Z0ZRZ0ZR a

rZ0ZrZ0j ZbZ0l0Zp 0Z0onopZ o0Z0o0Zn Po0OPZ0Z ZBZ0ANZ0 0O0Z0OPO Z0SQS0J0 a

3086 8

Exchange of a piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ Z0Z0apop poqZpZ0Z Z0o0O0Z0 0Z0ZNA0Z Z0Z0Z0Z0 POPZQOPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3091 8 7 6 5 4 3 2 1

3094

0s0Z0s0Z Z0Zbopjp pl0o0ZpZ ZpZPm0Z0 0Z0Z0Z0Z ZPZ0Z0OP PZNZPOBZ Z0SQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3096

rZ0l0ZkZ Z0obZrZp 0o0m0ZpZ o0mPo0Zn 0ZPZPo0a Z0MNZPZ0 POBL0APO ZKS0ZRZ0 a

c

rZ0lrZkZ opZ0Zpo0 0Znabm0o Z0ZpM0Z0 0Z0O0Z0A Z0MBZ0Z0 POQZ0OPO S0Z0ZRJ0 a

3093 8

b

3095

rZ0lrZkZ obanZ0op 0ZpZpZ0Z Z0OpZpZ0 PZ0OnZ0Z Z0ZNZNO0 0ZQZPOBO S0A0ZRJ0 a

rZbZrZkZ opo0Zpop 0ZnZ0l0Z Z0Z0o0Z0 0ZPZPZ0Z Z0L0ZNZ0 PO0ZBOPO S0ZRZ0J0 a

3092 8

Exchange of a piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmblkZ0s opZ0Z0op 0Z0o0Z0m Z0oPopZ0 0Z0ZPZ0Z Z0MBZNZP POPZ0OPZ S0L0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3097 8 7 6 5 4 3 2 1

3100

rZ0j0Z0A Zbo0Zpop po0m0a0Z Z0ZPZ0Z0 0Z0MrZ0Z O0Z0A0Z0 0OKZBOPO Z0ZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3102

0ZrmkZ0s o0mba0op 0o0Z0o0Z Z0o0Z0Z0 PZNZ0A0Z Z0MPZ0O0 0O0ZPZBO S0Z0ZRJ0 a

c

0l0lnZkZ ZpZba0s0 pZ0o0ZnZ O0ZPo0Z0 0Z0ZPoPZ MQZ0Z0Z0 0ORZBMPZ Z0S0A0J0 a

3099 8

b

3101

rlns0ZkA Z0Z0mpap pZpobZpZ Z0Z0o0Z0 NOPZPZ0Z Z0ZQZPO0 PM0Z0ZBO ZRZRZ0J0 a

rZ0l0skZ o0Z0Z0a0 0o0o0m0o Z0ZPobo0 0O0Z0m0Z Z0M0APZ0 PZ0ZBMPO Z0SQZRJ0 a

3098 8

Exchange of a piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opZ0m0ap 0l0o0mpZ Z0ZPopZ0 0Z0ZPZPZ Z0M0ZPZ0 PO0ZBM0O S0AQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3103 8 7 6 5 4 3 2 1

3106

rZbZ0skZ opZ0l0ap 0ZnZ0mpZ ZNZ0o0Z0 0Z0ZPo0Z Z0ZNZPZ0 PO0ABZPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3108

rZblna0j Z0o0Z0s0 0Z0Z0Z0Z oNMPo0Zp PZ0ZPopZ Z0Z0ZPZ0 0ZQZBZPO ZRS0Z0J0 a

c

rZrZqakZ ZpZbZpZp 0Zpo0mpZ Z0OPo0Z0 nO0ZPZ0Z MNZ0Z0Z0 0ZQZBOPO S0A0ZRJ0 a

3105 8

b

3107

rZqZ0s0j Z0o0Z0ap 0oPo0mpZ Z0ZPo0An 0ONZPZ0Z Z0M0Z0Ob 0Z0LBS0O ZRZ0Z0J0 a

rZ0ZnakZ Z0ZqZ0Zp 0ZnobZpA ZNZ0o0Z0 0oPZPZ0Z ZNZQA0ZP 0O0ZBZPZ Z0Z0ZRJ0 a

3104 8

Exchange of a piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rlrZnZkZ ZpZbZpap 0Z0o0ZpZ o0mPo0Z0 0Z0ZPZ0Z OPM0ZQZ0 0Z0M0OPO ZRA0SBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3109 8 7 6 5 4 3 2 1

3112

rZ0Z0s0Z Z0mbl0j0 0o0o0opo o0oPo0Z0 PZPZPO0O Z0M0Z0O0 0O0L0SBJ Z0Z0ZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3114

rZbZnskZ opZnl0ap 0Z0o0Z0Z Z0oPZpZ0 0ZPZpO0Z Z0M0Z0Z0 PO0ZBMPO S0AQZRZK a

c

rZbZ0lkZ ZponZ0ap 0Z0o0ZpZ o0mPo0O0 0ZPZPs0Z Z0M0A0L0 PO0MBO0Z S0Z0J0S0 a

3111 8

b

3113

rZrZ0ZkZ Z0lbZpa0 0Z0o0mpo ZpZPo0Z0 0OnZPZ0Z ZQM0ZNZ0 0Z0ZBOPO S0S0Z0J0 a

rlrZnZkZ Z0ZbZpap 0o0o0ZpZ o0mPo0A0 PZBZPZ0Z ZPM0Z0ZP 0Z0M0OPZ Z0SQZRJ0 a

3110 8

Exchange of a piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sbs0ZkZ Z0Z0Zpop pZpZpZ0Z l0ZpO0Z0 NZPZnO0Z aPZ0A0O0 PZQZ0ZBO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3115 8 7 6 5 4 3 2 1

3118

0ZrlrZkZ ZpZnZpZp pZ0obZpA Z0ZNm0Z0 PZ0ZPSPa ZNZ0Z0ZP 0OPL0ZBJ Z0Z0ZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3120

rZbZ0skZ opl0Z0op 0Z0Z0m0Z Z0Zpa0Z0 0Z0Z0Z0A Z0ZBZ0Z0 PO0ZNOPO S0ZQZRJ0 a

c

0ZrZrZkZ ZpZ0opap pZ0o0mpZ l0ZPZ0A0 0Z0Z0Z0L ZPZ0Z0O0 PZ0ZPOBO Z0SRZ0J0 a

3117 8

b

3119

rZblka0s o0ZnZpop 0ZpZpZ0Z Z0ZpO0Z0 0Z0Z0Z0Z Z0ZBZNZ0 POPZ0OPO S0AQJ0ZR a

rZ0lkZ0s ZpZbapZp 0Z0ZpZpO m0Z0O0Z0 pZpONZ0Z O0Z0ZNZ0 0O0Z0OPZ S0AQZRJ0 a

3116 8

Exchange of a piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ opZ0Z0ap nZpo0Z0Z Z0ZPo0Z0 0ZPZPo0Z Z0M0ZPZb PO0JBA0O Z0ZRZ0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3121 8 7 6 5 4 3 2 1

3124

rZ0Z0s0Z ZbZqZpak pono0Zpo Z0ZBZ0Z0 0O0OPZ0Z Z0Z0ANZP 0Z0L0OPZ S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3126

0Z0s0mkZ Zpl0apop pMpZbZ0Z Z0O0o0Z0 0OBZPZ0Z Z0Z0A0ZP PZQS0OPZ Z0Z0Z0J0 a

c

rZblkZ0s opo0Z0ap 0ZnZ0Zpm Z0Z0opZ0 0ZPZ0Z0Z Z0M0O0O0 PO0ZNOBO S0AQJ0ZR a

3123 8

b

3125

rZbZkZ0s ZplnZpop pZnopa0Z Z0Z0Z0Z0 0ZPZPO0Z O0MBANZ0 0O0ZQZPO S0Z0J0ZR a

rZ0l0skZ Zpo0Zpa0 0Z0o0Zpo ZPZ0o0Z0 0ZPm0ZbZ Z0MPZNO0 0Z0ZPOBO ZRZQZRJ0 a

3122 8

Exchange of a piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZqZrskZ opo0Zbap 0mno0ZpZ ZQZNZpZ0 PZPZ0O0Z Z0ZPO0ZP 0O0ANZBJ S0Z0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3127 8 7 6 5 4 3 2 1

3130

0Z0Zrs0j oplbZ0op 0Z0ZpmnZ Z0O0Z0Z0 0ZQA0O0Z ZNZ0Z0O0 PZ0Z0ZBO Z0Z0SRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3132

rZ0lrZkZ Zpa0mpop pZnZ0Z0Z ZBApZ0Zb PZ0Z0Z0Z ZNO0ZNZP 0O0Z0OPZ S0ZQS0J0 a

c

0ZrZrZkZ ZqZbopap pZpZ0ZpZ O0ZpM0Z0 0Z0OnZPZ Z0O0Z0ZP RO0ZBO0A Z0ZQZRJ0 a

3129 8

b

3131

0ZrZ0mkZ obZ0Zpo0 0o0Z0Z0o Z0l0o0Zn 0Z0ZPZ0Z O0Z0ZPZ0 0O0L0MPO Z0ZRABJ0 a

rZ0s0ZkZ obZ0apo0 0o0ZpZ0Z Z0Z0Z0Zp 0O0mPZqZ O0ZBZNA0 0Z0Z0OPO S0ZRZQJ0 a

3128 8

Exchange of a piece

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZpZRZpop pZpZ0Z0Z O0Z0o0Zb 0lBZPZ0Z Z0Z0LPZ0 0O0Z0ZPO Z0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3133 8 7 6 5 4 3 2 1

3136

rZbl0skZ opZnapop 0Z0ZpZ0Z Z0opO0A0 0Z0Z0Z0Z Z0OBO0Z0 PO0M0OPO S0ZQJ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3138

rZ0l0skZ ZpZ0opap 0Zbo0ZpZ o0Z0Z0Zn 0ZPAPZ0Z ZPM0ZPZ0 PZ0LBZPO S0Z0ZRJ0 a

c

rZ0lbskZ opZ0apop 0m0ZpZ0Z Z0ZnM0A0 0Z0O0Z0Z ZBM0Z0Z0 PO0Z0OPO S0ZQS0J0 a

3135 8

b

3137

rZ0Z0skZ ZbZnopap pZno0ZpA lpZ0Z0Z0 0Z0OPZ0Z Z0ZBZNZP PO0LNOPZ S0Z0ZRJ0 a

bZ0ZkZ0s Z0Z0apop 0mQZpZ0Z ZpZ0O0A0 0mpONZ0Z Z0Z0ZNZ0 0O0ZQOPO ZBZ0S0J0 a

3134 8

Avoiding exchanges

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s Zbl0ZpZp po0ZpZ0L Z0m0Z0Z0 0ZPZ0Z0Z APZ0ZNO0 PZ0Z0OBO S0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3139 8 7 6 5 4 3 2 1

3142

rm0ZrZkZ Zbl0ZpZp pZpo0mpa ZpZPo0Z0 0OPZPZ0Z Z0Z0ZNZP PZBZ0OPZ S0AQSNJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3144

rZbZrZkZ opoplpop 0Z0Z0m0Z Z0Z0m0Z0 0ZPZ0Z0Z Z0O0ONO0 PZ0O0ZBO S0AQZRJ0 a

c

0Z0Z0Z0j Zpobm0ap 0Z0o0Z0Z Z0OPZpZ0 0O0Z0Z0Z ZQZ0ZBZ0 0l0ZNZPO Z0Z0Z0AK a

3141 8

b

3143

rZbZkZ0s Zpo0Zpop pZpZqZnZ Z0a0o0Z0 0ZNZ0Z0Z Z0ZPANZ0 POPZ0OPO S0ZQZRJ0 a

0sblns0j Z0Z0m0ap 0Z0o0ZpZ Z0oPo0A0 0ZPZPo0Z ZNM0ZPZ0 0Z0ZBZPO S0ZQZRJ0 a

3140 8

Avoiding exchanges

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZpZ0lpZp 0Zpo0mpa Z0ZPo0Z0 bOPZPZ0Z Z0ZQZNZ0 0Z0ZBOPO ZRA0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3145 8 7 6 5 4 3 2 1

3148

0Z0Z0s0j o0Z0Z0ap 0ZBZ0ZpZ Z0O0Z0m0 0ONZpZ0Z O0ZrZpOb 0A0Z0O0O Z0Z0S0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3150

0Z0Z0skZ Z0Z0Zqap 0Z0ZbZ0Z o0spZPZQ 0Z0ZpO0Z Z0O0M0Z0 PZ0S0ZBO Z0ZRZ0ZK a

c

rZ0Z0a0s opZ0ZkZp 0Z0Z0opZ Z0ZpZqZ0 0Z0Z0Z0Z Z0Z0ZQZ0 POPZ0OPO S0A0S0J0 a

3147 8

b

3149

0sbl0skZ ZpZ0opap pZ0onmpZ Z0Z0Z0Z0 0ZPMPZ0Z Z0M0ABZP PO0Z0OPZ Z0SQZRJ0 a

0Z0ZrZkZ Z0Z0Zpop 0Z0Z0Z0Z opZpZbO0 PZ0A0m0Z ZBZ0ZqZ0 0OPL0Z0O Z0J0S0Z0 a

3146 8

Avoiding exchanges

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ oqZ0mpo0 0opZpm0o Z0Z0Z0Z0 0ZPObZ0Z L0Z0ZNO0 PA0ZPOBO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3151 8 7 6 5 4 3 2 1

3154

rZ0Z0skZ Z0Z0Zpop qZ0ZpZ0Z o0mpO0Z0 0Z0M0O0Z OpO0Z0Z0 0O0ZQZPO Z0ZRZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3156

rZ0l0s0j opZbZpap 0Z0o0Z0m ZBoPopZ0 PZ0Z0Z0Z Z0O0ONOP 0OQM0O0Z S0Z0J0ZR a

c

rZ0s0ZkZ ZpoqZpap 0Z0Z0ZpZ mPZ0o0Z0 0Z0Z0Z0Z Z0MPO0Ob 0ZQS0OBO ZRA0Z0J0 a

3153 8

b

3155

0mrZnZ0Z Z0ZkZ0op 0Z0o0o0Z ZrZPo0Z0 pO0Z0O0Z O0Z0MKO0 0A0S0Z0O Z0S0Z0Z0 a

0ZnmrZkZ opoqZrap 0Z0o0ZpZ ZPZNo0Z0 0ZPZ0Z0Z Z0ZPA0Ob PZ0LNOBO Z0S0S0J0 a

3152 8

Avoiding exchanges

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZqZ0skZ opZ0opap 0Zno0mpZ Z0Z0Z0Z0 0ZPM0Z0Z ZPM0O0Ob PZ0Z0OBO S0AQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3157 8 7 6 5 4 3 2 1

3160

rZ0l0skZ ZponZpop 0Z0opm0Z o0Z0Z0Z0 0ZPObZ0Z OPL0ZNO0 0Z0ZPOBO S0A0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3162

0ZrZrZkZ o0onlpo0 0o0opm0o Z0Z0Z0Z0 0ZPObZ0Z ZPA0LNO0 PZ0ZPOBO Z0SRZ0J0 a

c

rZ0ZqskZ ZpobZpZn nZ0o0apZ o0ZPo0Zp 0ZPZPZ0A O0M0ZPZ0 0O0MBZPO S0ZQZRZK a

3159 8

b

3161

rZqZ0skZ o0onZpop 0o0opm0Z Z0Z0Z0Z0 0ZPObZ0Z ZPL0ZNO0 PA0ZPOBO S0Z0ZRJ0 a

0j0Z0Z0s ZbZ0ZpZ0 0l0ZpZpZ o0apO0O0 0o0Z0O0Z Z0ZBZQM0 POPZ0Z0Z ZKZ0Z0ZR a

3158 8

Avoiding exchanges

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0Z0Z Z0o0Z0op pZpZ0o0Z Z0a0Z0Zn 0APZPZ0Z Z0ZrZ0ZP PZNZROPZ Z0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3163 8 7 6 5 4 3 2 1

3166

0Z0s0mkZ Z0Z0l0Zp 0opZnopZ o0a0o0ZP PZNZPZBZ Z0O0Z0O0 0O0ZQOKZ Z0ARZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3168

rZbZ0skZ opZnZ0ap 0ZpL0ZpZ Z0Z0l0Z0 0ZPZPZpZ Z0M0A0Z0 PO0Z0OPZ Z0ZRSBJ0 a

c

rmqZrZkZ o0Z0Zpop bo0Z0m0Z Z0opZ0Z0 0Z0O0Z0Z O0OBOPZ0 RZ0ZNZPO Z0AQZRJ0 a

3165 8

b

3167

0m0s0Z0Z ZbZ0lkZp 0ZpZpo0Z Z0Z0Z0Z0 0ZQZ0Z0Z Z0O0Z0O0 0Z0Z0OBO Z0ARZ0J0 a

0ZrZ0skZ obZ0Zpap 0o0lpZpZ Z0Z0Z0Z0 0ZPOBmNZ O0Z0Z0Z0 0Z0A0OPO Z0S0SQJ0 a

3164 8

Avoiding exchanges

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0m0Z0skZ Z0Z0ZpZp 0Z0o0ZpZ l0o0Z0Z0 QZ0ZPA0Z Z0a0ZNOP 0Z0Z0OKZ Z0S0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3169 8 7 6 5 4 3 2 1

3172

0s0jrZ0Z o0oqZ0op QZ0a0o0Z Z0ZRZ0Z0 0Z0O0A0Z Z0Z0Z0Z0 PO0Z0ZPO Z0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3174

rZrjnZ0Z o0ZnZpop 0o0ZpZ0Z Z0Z0Z0Z0 PZ0OPA0Z Z0Z0ZPZ0 0Z0ZKZPO S0S0ZNZ0 a

c

0Z0lrZ0Z Z0o0a0j0 0o0o0mpo Z0ZPo0Z0 QOPZNZ0Z Z0Z0Z0ZP 0Z0A0OPZ S0Z0Z0J0 a

3171 8

b

3173

rZ0Z0skZ o0onZpop qonZpZ0Z ZQZ0O0Z0 0ZPO0Z0Z Z0A0Z0M0 PZ0Z0OPO S0Z0ZKZR a

0Z0Z0Z0Z Z0ZrlrZk pZpZ0Zpa ZpZ0opZ0 0Z0ZPZ0L ZPMPZ0S0 PZPZ0Z0O Z0Z0Z0SK a

3170 8

Avoiding exchanges

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrl0ZkZ Z0Z0opap 0obo0ZpZ Z0Z0Z0Z0 nOPZPZ0Z Z0M0APZ0 0ZRLBZPO ZRZ0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3175 8 7 6 5 4 3 2 1

3178

rZrl0ZkZ ZpZ0ZpZp 0ZbopZpZ Z0Z0a0Z0 nOPZPZ0Z Z0M0APZ0 0ZRL0ZPO ZRZ0ZBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3180

rZblrZkZ opZ0Zpop 0ZpZpm0Z Z0ZnZ0M0 0ZBONZ0Z Z0Z0O0Z0 PO0Z0OPO Z0SQZRJ0 a

c

rZ0ZrZkZ ZbZnapZp 0ZqZ0ZpA ZpZ0o0Z0 0OpZPZ0Z Z0O0ZQMP 0ZBZ0OPZ S0Z0S0J0 a

3177 8

b

3179

0s0ZrZkZ Z0ZnopZp po0obZpZ Z0lNZ0Z0 0ZPLPO0Z Z0S0Z0Z0 PO0ZBZPO Z0ZRZ0ZK a

rZ0l0skZ ZbZ0opap 0Zno0mpZ Z0o0Z0Z0 0o0ZPO0Z ZPZPANOP 0ZPZNZBZ S0ZQZRJ0 a

3176 8

Avoiding exchanges

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0snm0Z opZ0Zpjp 0ZpMbZpZ O0Z0M0Z0 0OPZ0Z0Z Z0Z0Z0ZP 0Z0Z0OPZ S0ZRZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3181 8 7 6 5 4 3 2 1

3184

rZ0Z0skZ Z0Zqapop 0ZpZ0m0Z ZpZ0ZpZ0 0m0OPZ0Z ZBM0APZ0 0O0ZQZPO S0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3186

0Z0Z0j0Z ZrZpZpZ0 0Z0SrZ0o opZ0ORo0 0ZqZ0Z0Z O0OQZ0ZP 0O0Z0ZPZ Z0Z0Z0ZK a

c

rZ0l0skZ Z0ZnZpo0 bZnZpZ0o o0apO0Z0 0Z0Z0M0Z Z0OBZNA0 PZ0Z0OPO S0ZQS0J0 a

3183 8

b

3185

rZ0Z0ZkZ ZblnZpop 0Z0ZpZ0Z ZpZpO0AQ rOnO0Z0O Z0Z0Z0O0 0Z0Z0OBM S0Z0S0J0 a

rZblrZkZ ZpZ0Zpap pZ0o0mpA Z0o0Z0Z0 0ZPmPZPZ Z0M0ZPM0 PO0LBZ0Z S0Z0J0ZR a

3182 8

Avoiding exchanges

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZqZ0skZ Z0Z0opap bo0o0ZpZ oNmPZ0Z0 PZPZ0O0Z S0Z0A0Z0 0O0LBZPO Z0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3187 8 7 6 5 4 3 2 1

3190

rZbZrZkZ oplnZpap 0Z0Z0mpZ ZPM0Z0Z0 0ZpZ0Z0Z A0M0O0Z0 PZ0ZBOPO Z0SQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3192

rZ0Z0s0j opo0Z0a0 0Z0o0l0o Z0ZQZPo0 0ZPm0ZPZ Z0M0Z0Z0 PO0ZBOPZ Z0JRZ0ZR a

c

rZbZ0skZ opo0o0Zp 0Z0lpZpZ Z0Z0Z0Z0 0ZBaNZnZ Z0Z0ZNZ0 POPZQOPO S0A0Z0J0 a

3189 8

b

3191

0SbZ0skZ Z0l0Z0Zp 0Z0Z0Z0Z Z0spopZ0 0Z0Z0Z0Z O0Z0Z0O0 0Z0L0O0O ZRZ0ZBJ0 a

0Zrl0skZ obZ0apZp 0onZpZpZ Z0Z0Z0Z0 0Z0O0AnZ O0MQZNZ0 BO0Z0OPO S0Z0S0J0 a

3188 8

Liquidation

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0skZ Z0ZqZ0Zp bopZnopZ o0ZpZ0Z0 PZPO0L0Z ZPZ0SNZP 0Z0Z0OPZ Z0ZRZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3193 8 7 6 5 4 3 2 1

3196

rZrZ0ZkZ Z0Anapop pZ0ZpZ0Z ZpZnZ0Z0 0Z0M0Z0Z ZNZ0Z0O0 PO0ZPOKO Z0SRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3198

0ZrZrZ0Z opZnZpjp 0Z0Z0lpZ Z0ZPZ0Zn 0ZpZ0Z0Z O0M0Z0ZP 0OBZ0OPZ S0ZQS0J0 a

c

0s0ZnZkZ Z0Z0Zpa0 0Z0o0ZpZ o0oPZ0Zp NZ0ZPZ0Z ZrMnZPZ0 RO0S0APO Z0Z0Z0J0 a

3195 8

b

3197

0Z0Z0skZ Z0Z0Zpap 0O0o0Z0Z Z0ZqZpZ0 PoNmpZ0O Z0Z0Z0S0 0Z0Z0OPZ ZBZQZKZ0 a

rZbZ0skZ ZpZ0Zpop pZ0l0Z0Z Z0Z0M0Z0 PZBZnZ0Z Z0Z0Z0O0 0L0Z0O0O Z0S0ZRJ0 a

3194 8

Liquidation

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0ZrZ l0jpZ0Z0 0SbZ0Z0Z Z0O0o0o0 0Z0o0Z0Z OQZ0ZPo0 0S0Z0ZBZ Z0Z0M0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3199 8 7 6 5 4 3 2 1

3202

rZbjra0Z opZpZ0op 0ZpZ0onZ Z0Z0Z0Z0 0ZBO0Z0Z Z0Z0M0Z0 POPA0OPO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3204

rZ0a0skZ ZbZ0Zpo0 po0Zpm0o Z0Z0Z0Z0 0Z0Z0Z0A O0M0O0Z0 0O0SBOPO Z0Z0ZRJ0 a

c

rm0Z0Z0j ZpZ0lpo0 pA0onZ0o Z0Z0o0Z0 0Z0ZPZQZ ZBO0Z0O0 PO0Z0O0O Z0ZRZ0J0 a

3201 8

b

3203

0s0Z0skZ Z0Z0ZpZ0 0ZpZ0o0o o0ZpZ0Zb 0O0Z0Z0Z Z0Z0O0ZP PZNZ0OPZ S0Z0ZRJ0 a

0Z0Z0Z0Z oRZ0ZBj0 0Z0o0ZpZ Z0Z0ZbZp 0ZPZ0Z0O Z0Z0Z0O0 PZ0Z0aQJ Z0Z0l0Z0 a

3200 8

Liquidation

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZ0Z0Z o0ZkZ0Zp 0o0Zpopa Z0ZnZ0Z0 0Z0Z0Z0Z O0ZPO0O0 0A0M0OKO Z0S0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3205 8 7 6 5 4 3 2 1

3208

0Z0srZkZ Zbo0apop pZ0Zqm0Z ZpZ0M0A0 0Z0ZPZ0Z Z0O0M0Z0 PmBZQOPO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3210

rZ0Z0skZ o0Z0Lpop bm0Z0Z0Z Z0ZpA0Z0 0Z0Z0Z0O Z0ZPZ0O0 PZ0ZqOBZ S0Z0ZRJ0 a

c

rZ0snZkZ ZpZ0Zpap pZnZbZpZ ZNZpZ0Z0 0Z0M0Z0Z ZBZ0APZ0 POPS0ZPO Z0ZRZ0J0 a

3207 8

b

3209

0Z0s0ZkZ Z0o0lpop 0mRZnZ0Z ZpZpZQZ0 pM0O0Z0Z O0Z0O0Z0 0O0M0OPO Z0Z0Z0J0 a

rZbZ0skZ Z0Apopap 0ZnZ0lpZ MpO0Z0Z0 pZ0Z0Z0Z Z0Z0Z0O0 PZ0ZPOBO ZRZQZRJ0 a

3206 8

Liquidation

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ obZ0apo0 0o0ZpZ0o Z0ZnM0Z0 0ZBO0O0Z Z0O0Z0Z0 PZ0ZQZPO Z0S0ARJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3211 8 7 6 5 4 3 2 1

3214

rZ0Z0ZkZ opZ0spa0 0ZpZ0mpo Z0M0obZ0 0ZPZ0Z0Z ZPZ0A0O0 PZ0SPOBO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3216

0Z0Z0Z0s spZbjpo0 0m0Mpa0o o0Z0ZPZ0 PZ0Z0Z0Z ZBZ0ZNZ0 0OPS0ZPO Z0JRZ0Z0 a

c

0ZnZrZkZ o0ZqZpZp 0oRZ0ZpZ ZPZpO0Z0 0Z0A0Z0Z O0Z0O0L0 0Z0Z0ZPO Z0Z0Z0J0 a

3213 8

b

3215

0Z0Z0s0j o0a0lpop 0o0M0Z0Z Z0o0O0Z0 0Z0Z0ZQO O0O0Z0O0 0Z0Z0O0Z Z0ZRZ0J0 a

0Z0Z0Z0Z o0Z0Z0Z0 kopZ0L0Z Z0ZqZbZp PO0o0A0O Z0ZPZNZ0 0ZPZrZPZ Z0Z0Z0J0 a

3212 8

Liquidation

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s Z0a0Zpo0 poNZpm0o Z0Z0Z0Z0 NZ0Z0Z0Z Z0Z0Z0O0 PO0ZPOKO Z0SRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3217 8 7 6 5 4 3 2 1

3220

0m0l0skZ spZnZ0op pZpZ0apZ Z0OpZ0Z0 0Z0O0Z0Z ZQMBZ0A0 PO0Z0OPO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3222

0s0Z0ZkZ Z0ZnZpap pZNOrZpZ Z0o0o0Z0 PZ0Z0Z0Z ZqZ0A0ZP QZ0Z0OPZ Z0SRZ0J0 a

c

0ZrZ0ZkZ o0snl0op bo0apZ0Z Z0o0ZpZ0 0ZPOnM0Z Z0Z0ONO0 PARZQOBO Z0S0Z0J0 a

3219 8

b

3221

rZbZkZ0s opZ0Z0op 0ZpZ0o0Z Z0m0a0Z0 0ZPMBZ0Z Z0Z0Z0Z0 PO0Z0OPO Z0ARZRJ0 a

0Z0ZrZ0j ZpZ0Z0lp 0Z0ZpZ0Z Z0MpOpZb 0ZnL0O0Z Z0Z0Z0Z0 rO0ZPSBO Z0S0Z0J0 a

3218 8

Liquidation

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sbZ0akZ l0Z0Z0Zr pZ0o0ZnZ A0ZPo0O0 NZ0ZPZnZ Z0Z0ZBZ0 0O0L0MPZ S0S0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3223 8 7 6 5 4 3 2 1

3226

0sbZnZnj orZ0l0ap 0Z0o0opZ ZNoPZ0Z0 BZPZPA0Z ZRZNZ0Z0 PZ0L0ZPO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3228

0Z0s0skZ o0l0Z0Zp 0ZpZ0ZpZ Z0ZnZnM0 NZ0Z0Z0L Z0Z0Z0ZP PO0Z0ZPZ Z0Z0SRJ0 a

c

0Z0lrZkZ ZpSbZpa0 0Z0o0ZpZ ZNZPZ0Z0 0Z0Z0L0Z Z0Z0ZNZ0 0Z0ZrOPO Z0S0Z0J0 a

3225 8

b

3227

rZbZ0ZkZ o0Z0l0Z0 0Z0o0m0m ZNoPo0Zp 0ZPZPo0Z ZRZNZPZ0 PL0ZBZ0O Z0Z0Z0ZK a

rZ0ZnZrj opZbl0Z0 0Z0o0Z0Z ONZPo0op 0ONZPo0m Z0L0ZPZP 0ZRZBZPZ Z0S0ZKZ0 a

3224 8

Liquidation

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0skZ o0Znmpap 0ZpZbZpZ Z0Z0o0A0 0lPZPZ0Z ZNM0Z0Z0 PO0ZBZPO S0Z0LRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3229 8 7 6 5 4 3 2 1

3232

0sbl0snj Z0Z0Z0Zp 0o0o0Zpa ZPZPopZn NZNZPZ0Z Z0Z0APZ0 0Z0ZBZPO ZRZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3234

0Z0s0skZ opZ0l0a0 0ZpobopZ Z0Z0Z0Op 0ZPAPOnZ ZPM0Z0Z0 PZ0LBZPZ Z0ZRS0J0 a

c

0Z0ZrZkZ Zpo0Z0s0 0Z0o0Z0L o0ZPl0Z0 0ZPZ0ZnO Z0MpA0Z0 PO0J0Z0Z Z0Z0ZRS0 a

3231 8

b

3233

0Z0Z0s0j Z0ZRL0ap 0ZpZ0ZpZ o0Z0l0Z0 0ZPZpZ0Z ZPZ0A0ZP PZ0Z0O0Z Z0Z0Z0J0 a

0ZrZ0skZ l0Z0Zpa0 0Z0o0Z0Z o0ZPoNZp NZ0ZPm0Z Z0Z0ZpZ0 0O0L0SPO S0Z0Z0ZK a

3230 8

Liquidation

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0ZkZ opZ0Zpa0 0l0o0Z0o ZBZPZ0on 0Z0M0ZPZ Z0M0ZPZ0 PO0L0ZPZ Z0J0S0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3235 8 7 6 5 4 3 2 1

3238

0Z0ZrZkZ ZpZ0ZpZp 0ZpSbZpZ Z0Z0Z0Z0 0LPZPOqZ Z0Z0Z0O0 rZ0Z0Z0O Z0M0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3240

rZ0Z0ZkZ ZpZbZnZp 0lpo0ZpZ ZPZ0Z0Z0 0ZPM0O0Z ZQZ0Z0OP 0Z0ZRZBJ Z0Z0Z0Z0 a

c

rZ0ZrZkZ opZ0Zpap 0Z0Z0ZpZ Z0ZqZbZ0 0ZNZpZ0Z ZPZ0L0ZP PZNZ0OPZ Z0ZRZRJ0 a

3237 8

b

3239

bZrZ0ZkZ o0s0lpo0 0opZ0Z0o Z0ZpZ0Z0 QZ0OnZ0Z Z0M0OBZP PORZ0OPZ Z0S0Z0J0 a

rZ0s0ZkZ oqZ0Zpop 0o0apm0Z Z0Z0Z0Z0 0ZPM0Z0L ZPZ0Z0Z0 PA0Z0OPO Z0ZRS0J0 a

3236 8

Liquidation

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0s0j opo0l0Z0 0ZnZ0Z0O Z0ZpoBL0 0Z0Z0ZPZ Z0Z0Z0Z0 POPZ0Z0Z Z0J0ZRZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3241 8 7 6 5 4 3 2 1

3244

0Z0srZkZ o0m0lpo0 0o0o0m0o ZPoPZ0Z0 PZNZPO0Z Z0MQZ0ZP 0Z0Z0ZPZ Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3246

rZblnskZ o0Z0Zpop 0onopZ0Z Z0o0Z0Z0 0ZPOPZ0Z O0OBZ0Z0 0Z0ZNOPO S0AQZRJ0 a

c

0Zrs0ZkZ Zponopa0 qZ0Z0mpo o0Z0Z0Z0 0ZNO0Z0Z OPZNOPO0 0AQZ0ZKO Z0SRZ0Z0 a

3243 8

b

3245

0sbZkZ0s opmqa0op 0ZnZ0o0Z Z0o0o0Z0 QZ0Z0Z0Z O0M0ONO0 0O0O0OBO S0ARZ0J0 a

rZbl0skZ opZ0Z0a0 0Z0o0m0o Z0o0oPZ0 0ZPm0Z0Z Z0MBZ0ZN PO0Z0ZPO S0AQZRJ0 a

3242 8

Advantage in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZqZka0s opZnopop 0mpZ0Z0Z Z0ZPZ0Z0 0Z0ZPA0Z ZQM0ZPZ0 PO0Z0O0O Z0ZRJBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3247 8 7 6 5 4 3 2 1

3250

rZbZrZkZ ZpZ0Zpop pZ0o0anl Z0oPZ0Z0 PZ0ZPO0Z Z0ZBZ0ZP 0OQZ0ZPA Z0Z0SRMK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3252

0ZrZ0l0s opjnanZp 0Z0o0Z0Z Z0oPZ0ZP 0ZPZPS0Z Z0M0ZNZ0 PO0AQZ0Z Z0J0Z0S0 a

c

rZ0l0mkZ opa0Zpo0 0ZpZ0m0Z Z0Z0ZbZr 0Z0Z0O0Z O0M0ONZP BOQA0ZPZ S0Z0ZRJ0 a

3249 8

b

3251

rZ0ZrZkZ Zblnapop popo0m0Z Z0Z0o0Z0 0ZPOPZ0A Z0M0ZNZ0 POQZBOPO Z0SRZ0J0 a

0Z0ZkZrZ ZbZrZ0Z0 0mpoNo0Z ZpZ0ZPo0 0O0ZPZPZ Z0M0Z0JR 0ZPZ0Z0Z Z0Z0Z0ZR a

3248 8

Advantage in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ ZpZ0Zpop pZnZ0m0Z Z0Z0o0Z0 0ZPo0Z0Z M0Z0Z0O0 PO0LPOBO S0A0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3253 8 7 6 5 4 3 2 1

3256

rZ0Z0skZ opZbapop 0lnZpZ0Z Z0ZnO0Z0 0Z0O0Z0Z O0MBZNZ0 0O0Z0ZPO S0AQZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3258

0s0Z0skZ o0lpZ0mp bo0ZpZpZ m0Z0OpM0 0LPO0O0Z O0Z0A0Z0 0Z0ZBZPO ZRS0Z0J0 a

c

rZ0Z0skZ ZpZ0Z0Zn nZpo0Zpa Z0ZPoplp pOPZPZ0Z O0M0ZPO0 0S0M0A0O Z0ZQZBJ0 a

3255 8

b

3257

rZ0Z0skZ o0o0mpop 0o0Z0ZnZ Z0Z0Z0Z0 0Z0OPZ0Z l0O0ZQA0 PZ0ZBO0O ZRZ0J0ZR a

rZ0lrZkZ o0o0Zpo0 0o0o0mno Z0Z0oNZ0 0ZPOPZ0Z Z0OQZ0Z0 PZ0A0OPO Z0Z0SRJ0 a

3254 8

Advantage in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ Zpl0opa0 pZ0o0mpo O0oPm0Z0 0ZPZPZ0A Z0M0Z0Z0 0OQMBOPO S0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3259 8 7 6 5 4 3 2 1

3262

0s0lkZ0s Z0Z0a0op pZnobZ0Z ZpZ0o0Z0 0Z0ZBZ0Z M0Z0A0O0 POPZ0O0O S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3264

0Z0Z0Z0s Z0Zka0Z0 pZbopo0Z Zpl0Z0Zp 0Z0ZPZrZ Z0ZBM0ZQ POPZ0ZPO ZKZRS0Z0 a

c

rZblrZkZ opZ0Zpap 0ZpZ0ZpZ Z0ZnZ0Z0 0Z0oNZ0Z OQZPZNO0 0O0ZPOBO Z0S0S0J0 a

3261 8

b

3263

rZbZ0skZ Z0l0a0o0 pZ0opm0o Zpm0Z0Z0 0Z0MPZ0A Z0MBZ0ZQ POPZ0ZPO ZKZRZ0ZR a

rZ0Z0skZ Zpo0apo0 0Z0o0Z0o o0mPZ0Z0 qZPZPO0O Z0Z0ANZ0 PO0ZQZ0Z Z0JRZ0ZR a

3260 8

Advantage in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ o0Z0mpap 0onZ0ZpA Z0opZ0Z0 0Z0Z0Z0Z Z0MPZNO0 PO0ZPOBO S0L0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3265 8 7 6 5 4 3 2 1

3268

rZ0Z0Z0s Z0Z0jpZp pZ0lba0Z ZpZpo0Z0 0Z0Z0Z0Z Z0OBL0Z0 PONZ0OPO S0Z0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3270

rZ0ZrZkZ opZ0lpo0 0ZpZ0Z0o Z0Z0ZbZ0 0Z0OnA0Z Z0Z0Z0O0 PZ0ZPOBO ZRL0ZRJ0 a

c

0ZbZrskZ o0o0Zpo0 0o0o0l0o Z0mPZ0Z0 0ZPZPo0Z Z0O0MRO0 PZBL0ZPZ Z0Z0S0J0 a

3267 8

b

3269

rZblrZkZ Z0Z0Zpop 0Z0Z0m0Z o0ZPZ0Z0 0apZPO0Z Z0M0Z0ZP 0ABZ0ZPZ S0ZQZRZK a

0Z0lrskZ obZ0Z0op 0onopm0Z Z0Z0Z0A0 0ZPOPZ0Z Z0ZBZ0Z0 PZNZQZPO Z0Z0SRJ0 a

3266 8

Advantage in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZkZ opZ0Zpop 0m0Zrm0Z Z0Z0Z0Z0 qZpOPZ0Z Z0O0Z0O0 0Z0LRZ0O ZBA0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3271 8 7 6 5 4 3 2 1

3274

0Zrl0skZ obZ0Z0op 0o0Zpm0Z m0Z0Z0Z0 0Z0OPZ0Z O0ZBL0Z0 0A0Z0MPO S0Z0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3276

0sbZ0Z0j opZpZ0op 0Z0Z0s0Z Z0ZBZpZ0 0ZPO0Z0Z O0Z0Z0O0 0Z0ZPZ0O Z0JRZRZ0 a

c

rZ0lrmkZ opZ0Z0Zp 0ZpmbapZ Z0ZpMpZ0 0Z0O0A0Z Z0MBOPZP POQZ0ZPZ Z0Z0SRJ0 a

3273 8

b

3275

0Z0ZrskZ oqm0m0op 0o0ZpZ0Z Z0o0ZpZ0 0Z0OPO0Z O0OQZNZ0 0A0Z0ZPO Z0Z0SRJ0 a

rm0ZkZ0s Z0o0lpa0 pobm0Zpo Z0Z0o0Z0 0Z0ZPZ0Z ZBOQANZ0 PO0Z0OPO S0ZRZNJ0 a

3272 8

Advantage in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZ0ZkZ opZ0opap 0Z0oqmpZ Z0Z0Z0Z0 0ZPAPO0Z ZPM0Z0Z0 PZ0ZQZPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3277 8 7 6 5 4 3 2 1

3280

rZ0l0ZkZ opZborap 0Zno0Z0Z Z0ZNZ0Z0 0ZPM0OpZ Z0Z0A0Z0 PO0L0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3282

0ZrZ0ZkZ opZqZ0o0 0Z0Z0o0Z ZPZpmPZ0 PZ0arZ0Z Z0Z0Z0ZP RZ0Z0ZPZ ZQANZRZK a

c

rmblkZ0s o0Z0apZ0 0o0ZpZpZ Z0opOnZ0 0Z0O0O0o Z0ZBZNZP POPZQAPZ S0ZNZRJ0 a

3279 8

b

3281

rZ0l0s0Z opZ0Z0jp 0Zbo0ZpZ Z0ZBonZ0 0ZPZ0Z0Z Z0M0Z0Z0 PO0L0OPO S0Z0S0J0 a

rZ0Z0skZ opo0Zpop 0ZbZ0m0Z Z0Z0l0Z0 0Z0ZPZ0Z Z0MBL0ZP PO0Z0OPZ Z0JRZ0ZR a

3278 8

Advantage in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srZkZ o0l0Zpo0 0Z0a0m0o Z0Z0ZbZ0 0ZnZ0Z0Z Z0ZNZNZP PZPZ0OPZ S0AQSBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3283 8 7 6 5 4 3 2 1

3286

0s0ZrZkZ obZqZpo0 0o0o0m0o ZPoPZ0Z0 0Z0ZPO0Z ZPL0Z0OP 0Z0Z0MBZ S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3288

rZ0lrmkZ obZ0apop 0o0Z0Z0Z Z0opM0A0 0Z0OnO0Z Z0M0O0Z0 PO0Z0ZPO ZBSQZRJ0 a

c

0ZrsnZkZ ZqZ0opap po0o0ZpZ Z0Z0Z0Z0 PZPAPZ0Z ZPM0ZPO0 0Z0L0ZKO Z0SRZ0Z0 a

3285 8

b

3287

0s0lrZ0j Zpmnopap pZ0o0ZpZ O0oPZ0Z0 0ZBZPO0Z Z0M0Z0ZP 0OPAQZPZ S0Z0ZRJ0 a

rZ0s0ZkZ opZ0a0op nZnZbo0Z l0o0o0Z0 NZ0Z0Z0Z APZPM0O0 PZ0ZPOBO Z0SQZRJ0 a

3284 8

Advantage in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ obZnZpZp 0o0ZpapZ Z0Z0Z0Z0 0Z0OPA0Z Z0ZBZNZ0 PZ0ZQOPO S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3289 8 7 6 5 4 3 2 1

3292

0Z0s0skZ obZnl0op 0Z0apm0Z ZPopZ0Z0 0Z0Z0Z0Z ZPM0ONZ0 PAQZBOPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3294

0ZrlrZkZ o0Z0Zpop bZnZ0m0Z Z0opZ0Z0 0Z0Z0Z0Z O0O0OPM0 0ZBZ0ZPO S0AQS0J0 a

c

rmbl0skZ ZpZ0opap 0ZpZ0ZpZ ZPZ0Z0Z0 0Z0OPZ0Z Z0M0ANZP 0ZQZ0OPZ ZRS0Z0J0 a

3291 8

b

3293

rZ0l0skZ obo0anop 0Z0Z0o0Z Z0Z0o0Z0 0Z0Z0Z0Z Z0Z0ANZ0 POPMQOPO S0Z0ZRJ0 a

rZ0ZnskZ obZqopap 0o0onZpZ ZNZ0Z0Z0 0ZPZPZ0Z Z0M0APZ0 PO0LBZPO Z0SRZ0J0 a

3290 8

Advantage in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0ZkZ0s opo0lpap 0Z0o0mpZ Z0Z0ZbZ0 0ZPOpZ0Z Z0M0O0Z0 POQMBOPO S0A0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3295 8 7 6 5 4 3 2 1

3298

0s0ZrZ0Z ZpZnlpjn pZ0o0Zpo O0oPZ0Z0 0ZNZPOPZ Z0MQS0ZP 0O0Z0Z0Z Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3300

rZ0Z0s0Z o0m0l0jp 0Z0o0Z0Z ZboPZ0o0 0ZNZPo0Z Z0Z0Z0Z0 0O0ZBOPO S0ZQS0J0 a

c

0ZqZka0s s0ZnZpZp pZpZpo0Z O0Z0Z0Z0 0o0OPZ0Z ZPo0ZNZ0 0Z0ZBOPO S0ZQZRJ0 a

3297 8

b

3299

rZ0ZrZkZ ZbmqZpan pZ0o0ZpZ ZpZPZ0Zp 0ZpZPO0A O0M0ZBZP 0OQM0ZPZ Z0ZRS0J0 a

rZbZ0skZ o0Z0Z0ap 0ZnZpZpZ lpZ0ZpZ0 0ZpOPO0Z Z0O0A0Z0 PZBZNZPO Z0SQZRJ0 a

3296 8

Breakthrough in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0lnskZ o0Z0Zpap 0Z0o0ZpZ ZboPZ0Z0 0Z0ZPO0Z Z0M0Z0Z0 0O0M0ZPO S0AQS0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3301 8 7 6 5 4 3 2 1

3304

0sblrZkZ Z0m0Zpa0 pZ0o0mpo ZpoPZ0Z0 PZ0ZPO0A Z0M0Z0ZP 0OBZNZPZ S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3306

ns0Z0Zrj ZpZ0onZp pZ0o0opZ l0oPZ0Z0 PZPZPObO ZPMBZNZ0 0L0Z0ZPZ S0Z0ZRJ0 a

c

0Zrl0skZ o0Z0Zpop 0obZpa0Z m0Z0Z0Z0 0Z0OPZ0Z O0ZBZNZ0 0A0ZQOPO Z0ZRS0J0 a

3303 8

b

3305

0sbl0skZ Z0m0opap po0o0mpZ Z0oPZ0Z0 PZPZPA0Z Z0M0ZNO0 0O0Z0OBO S0ZQZRJ0 a

rZ0l0skZ obZ0Zpap 0o0ZpZ0Z m0Z0Z0Zp 0Z0OPZ0Z Z0ZBANZ0 PZ0Z0OPZ Z0SQZRJ0 a

3302 8

Breakthrough in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrZkZ Z0anZpop pZqZ0m0Z ZpZpZ0Z0 0ZpO0Z0M O0M0OPO0 0O0ZQZ0O ZBARZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3307 8 7 6 5 4 3 2 1

3310

rZrZ0akZ Zbl0Zpo0 0Zpo0m0o o0ZPoNZ0 BZPZPZ0Z Z0Z0ZNZP PZ0Z0OPZ Z0SQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3312

0Z0ZrmkZ ZbZ0spZp 0o0o0lpZ ZPZpZ0Z0 0Z0O0Z0Z A0Z0OPO0 0Z0L0ZNO Z0Z0SRJ0 a

c

rZ0lkZns Z0o0Z0ap pZpo0opZ Z0Z0Z0Z0 0Z0LPAbZ Z0M0ZNZ0 POPZ0OPO Z0JRZ0ZR a

3309 8

b

3311

rZbZ0skZ opZ0lpap nZpo0mpZ Z0Z0o0A0 0ZPOPZ0Z Z0M0ZNZ0 PO0ZBOPO S0ZQS0J0 a

rZ0Z0ZkZ o0Z0Z0op 0onZrm0Z Z0ZpZpZq PZpO0Z0Z A0O0OPO0 0ZQMRZ0O Z0Z0S0J0 a

3308 8

Breakthrough in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrmkZ o0l0Zpap 0opo0ZpZ Z0Z0o0Zn 0ZPOPZ0Z ZPZ0ZNO0 PAQM0OBO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3313 8 7 6 5 4 3 2 1

3316

rZ0ZrZkZ Z0l0Zpa0 po0o0mpo Z0ZPZ0Z0 PZpZPO0Z Z0M0ZQZ0 0O0M0ZPO Z0Z0SRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3318

rZblns0Z Zpo0Z0jp pZ0o0ZnZ ZNOPo0o0 0ONZPo0Z Z0Z0ZPZ0 PLRZBZPO Z0Z0ZRZK a

c

rZ0lns0j Z0ZbZpZn 0S0o0apZ o0oPo0Zp PZPZPZ0Z Z0MBAPO0 0Z0L0ZNO ZRZ0Z0J0 a

3315 8

b

3317

rZbl0skZ opo0mpa0 0Z0o0Z0o Z0OPZ0o0 0O0ZPo0Z ZQM0ZNZ0 PZ0ZBOPO Z0ZRZRJ0 a

rZ0Z0snj Zpobl0ap 0Z0o0ZpZ Z0OPopZ0 0ONZPm0Z Z0MBAPZ0 0ZQZ0ZPO ZRZ0ZRZK a

3314 8

Breakthrough in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ ZpZnlnap 0Zpo0opZ o0Z0o0Z0 0ZPOPZ0Z Z0M0ANZP POQZBOPZ Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3319 8 7 6 5 4 3 2 1

3322

rZblrZkZ ZponZnap 0Z0o0o0Z oNZ0o0o0 0ZPOPZ0Z Z0Z0ZNA0 POQZBOPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3324

rZbZ0skZ opZ0l0Zp 0Zpo0Z0m Z0ZPZpM0 0OPapOnZ Z0M0Z0Z0 PZ0ABZPO Z0SQZRZK a

c

0ZbZrZkZ s0Znl0mp po0o0opL Z0oPZ0Z0 PZPZPZPZ Z0MBZNZP 0O0Z0S0Z Z0Z0ZRJ0 a

3321 8

b

3323

rZbZ0skZ opZnl0Zp 0Zpo0opm Z0Z0o0Z0 0ZPOPZ0Z Z0M0ZNZP POQZBOPZ S0ZRZ0J0 a

rZ0ZrZkZ o0ZnZpan 0Z0o0ZpZ lpoPZ0O0 0Z0ZPO0Z Z0M0ZBZ0 PO0Z0Z0Z Z0SQZRAK a

3320 8

Breakthrough in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblrZ0Z opm0Zpak 0Z0opmpo Z0oPZ0Z0 0ZPZPZ0Z Z0MBANZP PO0L0OPZ S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3325 8 7 6 5 4 3 2 1

3328

rZ0l0skZ o0Z0Z0Z0 no0Z0Z0o Z0oPo0m0 0OPZPobZ O0ZBZ0Z0 0Z0ANZPZ ZRZ0LRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3330

rZ0Zka0s Z0ZbZ0Z0 pZ0opo0Z Z0l0Z0Zp 0o0MPZ0Z Z0MQZ0Z0 POPZ0ZPO ZKZRZ0ZR a

c

0sbZkZ0s Z0Znapop 0ZnZpZ0Z l0opO0Z0 0o0O0M0Z Z0OBZNZ0 PO0Z0OPO S0AQS0J0 a

3327 8

b

3329

0Z0s0Z0s Z0ZbjpZ0 pa0opo0Z Zpl0Z0Zp 0Z0MPO0O Z0O0Z0O0 PO0L0ZBJ Z0ZRZRZ0 a

rZbl0skZ ZpZ0a0op pZ0ZpZ0Z Z0Z0OpZP 0ZQO0O0Z Z0M0ANZ0 PO0Z0JPZ S0Z0Z0Z0 a

3326 8

Breakthrough in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lkZ0s o0ZnapZp 0onZpZpZ Z0opO0Z0 0Z0O0O0Z O0Z0ANZ0 0OPZNZPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3331 8 7 6 5 4 3 2 1

3334

rZ0ZkZ0s ZqZ0mpZp pZ0apZ0Z ZpZ0ZpZ0 0Z0O0Z0Z O0M0Z0ZQ 0O0ZNOPO S0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3336

rZ0lrZkZ ZbZ0Z0ap po0ZpmpZ Z0Z0Z0Z0 PZ0O0Z0Z ZPZBM0Z0 0A0Z0LPO Z0ZRZRJ0 a

c

rZblnZ0j opo0Z0ap 0Z0o0Zrm ZNOPo0o0 0ONZPo0Z Z0Z0ZPZ0 PARZBZPO Z0ZQZRJ0 a

3333 8

b

3335

0Zrlka0s opZnZpo0 0Z0ZpZ0Z Z0opO0Zp 0Z0O0Z0Z ZPZQA0M0 PZPZ0OPO S0ZRZ0J0 a

0Z0srZka o0ZbZpZp 0o0o0Zpl Z0ZPZ0Zn 0Z0ZPO0Z Z0ZBANZP PZ0L0ZPZ Z0ZRS0J0 a

3332 8

Breakthrough in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ Z0mqZpop pZ0o0Z0Z ZpoPZ0Z0 PZPZPO0Z Z0M0Z0ZP 0Z0Z0SPZ Z0SQZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3337 8 7 6 5 4 3 2 1

3340

rZ0ZrZkZ Z0ZnZpZp 0lNo0apZ o0mPZ0Z0 PZ0ZPO0Z ZpZ0Z0OP 0Z0Z0ABZ Z0SQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3342

0ZbZns0j L0Z0Zpop 0ZNo0l0Z ZNmPZ0Z0 0ZpZPZ0Z Z0Z0Z0O0 0Z0Z0OBO Z0Z0ZRJ0 a

c

rZnl0skZ opZ0apZ0 nZpZpZpZ Z0Z0Z0Op 0ZPONO0O Z0Z0A0ZB PO0ZQZ0Z Z0ZRZRJ0 a

3339 8

b

3341

rZ0ZkZ0s opZbapop 0Z0ZpZ0Z Z0ZpO0l0 0Z0L0Z0Z Z0MBZ0Z0 POPZ0ZPO ZKZRZRZ0 a

kZ0s0Z0s o0l0Zpo0 0Zpapm0o ZpZ0Z0ZP 0ZPO0Z0Z Z0A0ZNO0 PO0ZQO0Z ZKZRZ0ZR a

3338 8

Breakthrough in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zks0m0s ZpZ0ZqZ0 pZpmpo0Z Z0Z0Z0o0 PZPO0ZPZ ZPZRANZ0 0J0Z0O0Z Z0ZRL0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3343 8 7 6 5 4 3 2 1

3346

rZ0Z0j0s opm0Zpa0 0ZpZpZpZ Z0Z0Mbl0 0ZPO0Z0o ZBA0ZQZP PO0Z0OPZ Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3348

0Z0srakZ ZbZnlpop pZpZpZ0Z Z0Z0Z0O0 0opOPA0Z OnM0ZNLB 0O0Z0O0A Z0ZRS0J0 a

c

rZbZka0s ZpZ0opZp pl0o0mpZ Z0Z0Z0Z0 0Z0ZPO0Z ZPM0ZBZ0 0OPZ0ZPO S0AQJ0ZR a

3345 8

b

3347

0Z0ZrskZ Spo0l0o0 0Z0Z0ZnZ ZPm0opZp 0ZPo0Z0O ZNZPZNO0 0ZQZPOKZ ZRZ0Z0Z0 a

rZblkZns opZ0Zpap 0Zno0ZpZ ZBZ0Z0Z0 0Z0oPZ0Z A0Z0ZNZ0 0ZPZ0OPO SNZQS0J0 a

3344 8

Breakthrough in the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0lrZkZ o0Znopap 0ZpZbZpZ O0Z0Z0Z0 0ZPO0Z0Z ArZ0ZNMP 0Z0ZQOPZ S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3349 8 7 6 5 4 3 2 1

3352

rZ0Z0mkZ opl0spop 0ZpobZ0Z Z0Z0o0Zn 0ZPO0Z0Z Z0MBONZP POQZ0OPZ Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3354

0ZrlrZkZ ZbonZpa0 pZ0o0mpo ZpZ0o0Z0 PO0OPZ0Z ZNO0ZNZP 0ABZ0OPZ SQZ0S0J0 a

c

rZ0ZrZkZ opZqZpo0 0Zba0mno Z0Zpo0Z0 0Z0Z0Z0Z ZPZPMNO0 PARZPOBO L0S0Z0J0 a

3351 8

b

3353

0Z0s0skZ Z0l0apop pZno0m0Z ZpZ0o0Zb 0Z0ZPZ0Z Z0O0MNZP POBZ0OPZ S0AQS0J0 a

rZ0Z0skZ Z0Zqapop pZ0Z0ZbZ ZpZpO0Z0 0Z0OnZPZ ZBZ0A0ZP PO0M0Z0Z S0ZQZRJ0 a

3350 8

Blowing up the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lkZ0s opZnZ0op 0Z0apZ0m Z0ZpZpZb 0Z0O0Z0Z ZQZ0ZNOP PO0MPOBZ S0A0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3355 8 7 6 5 4 3 2 1

3358

qZrZ0ZkZ Zbs0ZpZ0 pZ0o0Zpo Zpm0o0a0 0Z0mPZ0Z OPZBZ0ZP 0APM0OPZ ZNSQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3360

rZblnskZ o0Z0m0ap 0Zpo0ZpZ Z0Z0opZ0 0OPZPZ0Z Z0M0ZNZ0 PZ0ABOPO Z0SQZRJ0 a

c

rZbZ0s0j opZ0Zqa0 0Zpo0Zpo Z0ZPonZ0 0ZPZNZ0O ZQZ0ZNO0 PO0ZBOKZ S0Z0Z0ZR a

3357 8

b

3359

rZ0lrakZ ZbonZpop pZ0o0m0Z ZpZ0o0Z0 0O0OPZ0Z O0O0ZNZP 0ZBM0OPZ S0AQS0J0 a

rZ0l0skZ o0Z0mpap 0ZpobmpZ Z0Z0o0A0 0ZPZPZ0Z Z0M0ZNZ0 PO0ZBOPO S0ZQZRJ0 a

3356 8

Blowing up the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZrakZ ZblnZpop po0opZ0Z Z0Z0Z0O0 PZnMPO0O Z0M0Z0Z0 0OPZQZBZ Z0ARZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3361 8 7 6 5 4 3 2 1

3364

0sqZrakZ ZbZ0Zpop 0Z0opZ0Z Zpm0Z0O0 0Z0APO0Z Z0Z0Z0M0 0OPZ0ZBO S0ZQZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3366

rZbZ0skZ opZna0op 0ZnZpo0Z Z0ZpO0Z0 0Z0O0O0Z ZPZBZNZ0 0O0ANJPO S0Z0Z0ZR a

c

rZ0ZkZrZ ZplbapZ0 pZ0opm0Z Z0Z0m0o0 0OPMPZPZ Z0M0APZ0 PZ0LBZ0Z Z0S0J0ZR a

3363 8

b

3365

rZ0lka0s o0ZnZpop no0ZpZ0Z Z0opO0Z0 0Z0O0Z0Z Z0Z0Z0Z0 POPMNOPO S0AQZRJ0 a

rZ0lrZkZ o0Z0Zpap bonopmpZ Z0o0Z0Z0 0ZPOPZ0Z ZPM0APO0 PZ0LNJ0O Z0ZRZBZR a

3362 8

Blowing up the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ Zbo0apop pZ0o0m0Z ZpZ0Z0M0 0ZnZPO0Z Z0O0Z0ZP POBZ0ZPZ SNAQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3367 8 7 6 5 4 3 2 1

3370

rZ0l0skZ ZpZ0Zpap pZ0Zpm0Z Z0ZpAbo0 0ZpO0Z0Z Z0M0OBZ0 POPZQOPO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3372

0s0ZbskZ opmqZ0op 0ZpZpZ0Z Z0OpZpZ0 PZ0O0O0Z Z0L0OPZ0 0O0Z0MBO S0Z0ZRJ0 a

c

rZbZ0skZ opZnZ0op 0lnZpa0Z Z0ZpZ0Z0 0Z0O0O0Z Z0ZBZNJ0 PO0ZNZPO S0AQS0Z0 a

3369 8

b

3371

rZ0s0ZkZ Zbl0apo0 po0opmno Z0Z0Z0Z0 PZ0ZPZ0Z ZNM0APZ0 0OPLBZPO Z0ZRZRZK a

rZ0ZqskZ opZbZ0op 0Znapm0Z Z0ZpZ0A0 0Z0O0Z0Z Z0ZBZNM0 PO0Z0OPO SQZ0ZRJ0 a

3368 8

Blowing up the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZqZrZkZ oponZpa0 0Z0Z0Zpo ZPZ0onZ0 PZPoNZ0Z A0ZPZNOb 0Z0ZPO0O S0ZQS0JB a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3373 8 7 6 5 4 3 2 1

3376

0s0lkZ0s opZnZ0op 0Zpa0Z0m Z0ZpZpZ0 0Z0O0ZbZ ZQZ0ZNO0 PO0MPOBO S0A0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3378

0Zbl0skZ s0Z0mpop pZ0o0m0Z O0Z0oPZ0 0o0ZPZ0Z ZNZBZ0Z0 0OPZQZPO S0ZNZRJ0 a

c

rZ0ZrZkZ Zbl0apZp ponopmpZ Z0Z0Z0Z0 0ZPZPOPZ ZPM0M0Z0 PA0ZQZ0O ZBZRZRJ0 a

3375 8

b

3377

0Zks0a0s Zpo0m0op pZ0lbo0Z Z0o0o0Z0 0Z0ZPZ0Z Z0OPANZ0 PO0MQOPO S0Z0ZRJ0 a

rZ0ZrZkZ oblnZpap 0o0opmpZ Z0Z0Z0Z0 0ZPMPO0Z ZPM0Z0Z0 PA0ZQZPO ZBZRZRZK a

3374 8

Blowing up the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ Zpl0Zpap pZ0opZpZ Z0Z0m0A0 0ZPZPZnZ Z0M0Z0Z0 POBMQOPO S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3379 8 7 6 5 4 3 2 1

3382

rZbZrakZ Z0l0Zpop pZpo0m0Z Z0m0Z0Z0 0ZBMPZ0Z O0M0APZP 0OQZ0ZPZ Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3384

rZbZrZkZ Zplnmpap 0ZpZ0ZpZ Z0Zpo0Z0 PZ0ZPZ0Z Z0ZPZNO0 0APM0OBO S0ZQS0J0 a

c

rmbl0skZ opZpZ0op 0Z0ZpZ0Z Z0oPOpZ0 0ZPZnO0Z Z0A0Z0O0 PO0Z0Z0O S0ZQJBMR a

3381 8

b

3383

0Z0srakZ ZqZnZpZp pZbopZpZ o0Z0Z0O0 PZ0ZPO0Z ZPZ0Z0ZR 0ZPS0ZBO Z0ZNL0AK a

0s0l0skZ Z0ZbZpap pZno0mpZ ZpZ0o0Z0 0O0OPZ0Z ONM0APZ0 0Z0L0ZPO S0Z0JBZR a

3380 8

Blowing up the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0ZkZ o0ZnZpo0 bZpZpm0o l0ZpZ0Z0 0ZPO0Z0Z ZQS0ONO0 PZ0M0O0O Z0Z0ZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3385 8 7 6 5 4 3 2 1

3388

rmblrZ0Z ZpZ0Zpak 0Zpo0mpo Z0Z0o0Z0 0OPZPZ0Z Z0MPZNO0 0Z0A0OBO ZRL0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3390

0j0s0s0Z oplbZpZ0 0ZnZpZ0Z Z0LnO0Z0 0Z0oNO0Z O0Z0Z0Z0 0ZPZ0ZPO ZRAKZBZR a

c

rZbZ0skZ opl0apop 0Znopm0Z O0Z0Z0Z0 0ZBZPO0Z ZNM0Z0Z0 0OPZ0ZPO S0AQZRJ0 a

3387 8

b

3389

0s0Z0s0j opoqZ0a0 0Z0obZno ZPZ0opo0 PZPZ0O0Z Z0ZPO0O0 0ZQZNZBO ZRA0ZRJ0 a

rZ0lrakZ Z0obZpo0 pZ0o0m0o mpZPo0Z0 PZ0ZPZ0Z Z0O0ZNZP 0OBM0OPZ S0AQS0J0 a

3386 8

Blowing up the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0j0s ZbonZ0o0 po0a0Z0Z Z0Z0ZpZ0 0Z0OpZqZ O0M0O0Op 0OQA0O0O Z0JRZRZB a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3391 8 7 6 5 4 3 2 1

3394

rZ0lrZkZ ZbZnapop pZ0o0m0Z ZpZ0o0Z0 PO0OPZ0Z Z0Z0ZNZP 0ZBM0OPZ S0AQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3396

rZ0lrakZ Zbo0ZpZp pZno0mpZ ZpZ0o0Z0 0Z0OPZ0Z ZPO0ZNZP PZBM0OPZ S0AQS0J0 a

c

rZbZkZ0s Zplnapo0 pZ0opm0o Z0Z0Z0Z0 0Z0MPOPO Z0M0ZBZ0 POPZ0Z0Z S0AQZRJ0 a

3393 8

b

3395

rZ0lrZkZ Zbo0Zpap pZno0mpZ ZpZ0o0Z0 0Z0OPZ0Z O0O0ZNZP 0OBZ0OPZ S0AQSNJ0 a

rZ0ZrZkZ Zpl0apop pZbopm0Z O0Z0ZPZ0 0m0MPZPZ Z0MBA0Z0 0OPZ0Z0O S0ZQZRZK a

3392 8

Blowing up the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ Zbl0apop pZnopm0Z ZpZ0Z0Z0 0Z0ZPOPZ O0M0ZBZ0 0OPZNZ0O S0AQZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3397 8 7 6 5 4 3 2 1

3400

rZ0ZkZ0s Zbl0apop pZnopm0Z ZpZ0Z0Z0 0Z0ZPOPZ ONMBZ0Z0 0OPZQZ0O S0A0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3402

rl0ZkZ0s ZpZbapop pZnopm0Z Z0Z0Z0Z0 0Z0MPOPZ Z0M0A0Z0 POPZBZ0O S0ZQJ0ZR a

c

rZbZ0skZ Zpl0apop pZnopm0Z Z0Z0Z0Z0 0Z0ZPOPZ Z0M0Z0ZP POPZNZBZ S0AQZRJ0 a

3399 8

b

3401

0Zrs0ZkZ Zbl0apop pZnopm0Z ZpZ0Z0Z0 0Z0ZPZPZ OPM0Z0ZP 0APLNOBZ Z0ZRZRJ0 a

0Zrs0ZkZ oqZ0apop 0obopm0Z Z0Z0Z0Z0 PZ0LPOPZ ZPM0Z0ZP 0APZ0ZBZ Z0ZRZRZK a

3398 8

Blowing up the centre

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZka0s ZplbZpop pZ0opm0Z Z0Z0Z0Z0 0Z0SPOPZ Z0M0AQZ0 POPZBZ0O Z0J0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3403 8 7 6 5 4 3 2 1

3406

bsqZrakZ Z0ZnZpZp ponopZpZ Z0Z0Z0Z0 0ZPZPO0Z Z0M0ABZ0 PONZQZPO Z0SRZ0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3408

rZ0ZrakZ ZblnZpZp po0opmpZ Z0Z0Z0Z0 0ZPZPO0L Z0MBANZ0 PO0Z0ZPO Z0ZRZRJ0 a

c

0l0srZkZ ZbZnapZp po0opmpZ Z0Z0Z0Z0 PZPMPO0Z ZPZ0Z0M0 0A0Z0ZPO ZBSQS0J0 a

3405 8

b

3407

0ZrZ0skZ ZblnapZp po0opmpZ Z0Z0Z0Z0 0OPMPO0Z Z0MBZ0Z0 PZ0AQZPO Z0S0ZRZK a

0lrZrZkZ ZbZnapop po0opm0Z Z0Z0Z0Z0 0ZPMPZ0Z ZPM0L0OP PA0Z0OBZ Z0S0ZRJ0 a

3404 8

Hedgehog

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0lkZ Z0snZpo0 pobopm0o Z0Z0Z0Z0 0OPLPZ0Z ONZ0ZPO0 0Z0M0Z0O Z0S0SBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3409 8 7 6 5 4 3 2 1

3412

rZ0ZnZkZ ZqZ0Zpo0 poropa0o Z0Z0Z0Z0 PZPZPZ0O ZPMRZPO0 0A0L0ZKZ Z0ZRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3414

0ZrlrZkZ ZbZnapZp po0opmpZ Z0Z0Z0A0 0OPO0Z0Z O0MBZNZ0 0Z0Z0OPO Z0SQS0J0 a

c

0ZrZrZkZ ZbZqmpo0 po0opm0o Z0Z0Z0Z0 0OPO0Z0L ONMBZ0Z0 0Z0Z0OPO Z0ZRS0J0 a

3411 8

b

3413

0ZrlrZkZ obZnapZp 0o0opmpZ Z0Z0Z0Z0 0OPO0Z0Z O0MBZNZ0 0A0Z0OPO S0ZQS0J0 a

rZ0lrZkZ obZnapZp 0o0opmpZ Z0Z0Z0Z0 0OPO0Z0Z Z0MBZNZ0 PA0Z0OPO S0ZQS0J0 a

3410 8

Hedgehog

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ oblnapop 0o0opm0Z Z0Z0Z0Z0 0ZPO0Z0Z O0MBZNZ0 0O0Z0OPO S0AQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3415 8 7 6 5 4 3 2 1

3418

rZ0l0skZ ZbZnapop po0opm0Z Z0Z0Z0Z0 0ZPO0Z0Z ZPMBZNZ0 PA0Z0OPO S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3420

0Z0srZkZ Zbl0apon po0opZ0o Z0Z0m0Z0 0ZPZPZ0Z M0M0Z0AP PO0S0OPZ Z0ZQSBJ0 a

c

blrZrZkZ Z0Z0apop po0opm0Z Z0Z0m0Z0 0ZPZPZ0Z ZPM0APZ0 PZNL0ZPO Z0SRZBZK a

3417 8

b

3419

qZ0Zka0s sbZnZpop po0opm0Z Z0Z0Z0Z0 0ZPMPO0Z Z0M0A0O0 PO0Z0ZBO S0ZQZRJ0 a

0lrs0ZkZ ZbZ0Zpop ponopZ0Z Z0m0Z0L0 0ZPZPZ0Z Z0M0ZPZ0 PORZBZPO ZNZRZ0J0 a

3416 8

Hedgehog

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZbZ0lpop 0onopa0Z o0m0Z0Z0 0ZPZPZ0Z O0M0A0Z0 0OQZBOPO ZNZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3421 8 7 6 5 4 3 2 1

3424

0ZrZrZkZ Zblnapon po0opZ0o Z0Z0Z0Z0 0ZPZPOPO M0M0ABZ0 PO0Z0Z0L Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3426

0Zrs0akZ ZblnZpop po0opZnZ Z0Z0Z0Z0 0ZPZPO0Z Z0M0ZBA0 PO0MQZPO Z0ZRZRZK a

c

0lrZ0s0j ZbZnapop po0opm0Z Z0Z0Z0Z0 0ZPZPZ0Z O0M0APZ0 0O0L0ZPO ZNSRZBJ0 a

3423 8

b

3425

0lrZ0Zrj Z0ZnapZp pobopm0Z Z0Z0Z0o0 0ZPZPZ0Z ZPM0ZPZ0 PZNL0ZPO Z0SRZBAK a

0lrZrZ0j ZbZ0apo0 po0opm0o Z0m0Z0Z0 0ZPZPZ0Z L0M0ZPZ0 PONZ0ZPO Z0SRZBAK a

3422 8

Hedgehog

c

d

e

f

g

h

8 7 6 5 4 3 2 1

blrZrZkZ Z0Znapo0 po0opZno Z0O0Z0Z0 NO0ZPZ0Z ONZ0A0OP QZ0Z0OBZ Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3427 8 7 6 5 4 3 2 1

3430

bZrZ0ZkZ Zqsnapop po0opZ0Z m0Z0Z0Z0 0ZPZPO0Z M0M0A0Z0 PO0SBLPO Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3432

0s0lnZkZ Z0sbapop ponopZ0Z Z0Z0Z0Z0 0ZPZPZ0Z O0M0A0Z0 0O0MBOPO S0S0ZQJ0 a

c

0ZrZrZkZ Zblnapon po0opZ0o Z0Z0Z0Z0 0ZPZPZPO M0M0ZPL0 PO0ZBA0Z Z0ZRZRJ0 a

3429 8

b

3431

rZ0l0skZ ZbZ0Zpop ponopZ0Z Z0m0a0Z0 0ZPZPZ0Z M0M0APZ0 POQZ0ZPO S0ZRZBJ0 a

0s0Z0skZ Zblnapop po0opZnZ Z0Z0Z0Z0 0ZPZPO0Z ZQM0ANZ0 PO0ZBZPO Z0SRZ0J0 a

3428 8

Hedgehog

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ obZ0Zpop 0o0opl0Z Z0Z0m0Z0 0ZPZPZ0Z Z0M0Z0Z0 PO0L0OPO S0Z0SBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3433 8 7 6 5 4 3 2 1

3436

0ZrlnskZ ZbZ0apop po0opZ0Z Z0m0Z0O0 0ZPZPO0Z M0M0ABZ0 PO0Z0ZQO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3438

0s0ZkZ0s Zblnapo0 po0opm0o Z0Z0Z0Z0 0ZPZPO0Z M0M0ABZ0 PO0ZQZPO Z0S0ZRZK a

c

0Zrl0skZ obZnapop 0o0opZ0Z Z0Z0m0Z0 0ZPZPZ0Z Z0M0Z0A0 PO0M0OPO S0ZQSBJ0 a

3435 8

b

3437

0s0ZrZkZ ZqZ0apop pobopm0Z Z0Z0m0Z0 0ZPLPZ0Z Z0M0ZPZ0 PONZBAPO Z0SRZ0J0 a

0ZrZ0lrj Z0Zna0Zp pobopo0Z Z0Z0m0o0 0ZPSPZ0Z Z0M0M0AP POQZBOPZ Z0ZRZ0J0 a

3434 8

Hedgehog

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZbZ0Zpop ponopl0Z Z0m0a0Z0 0ZPZPZ0Z Z0M0A0O0 POQZBO0O ZNSRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3439 8 7 6 5 4 3 2 1

3442

0l0Z0skZ ZrZ0apop pobopm0Z Z0Z0Z0Z0 0mPZPA0Z M0M0Z0Z0 PO0LBOPO Z0SRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3444

0Zrs0ZkZ Z0l0apop pobopm0Z Z0Z0m0Z0 0ZPZPZ0Z Z0M0APZ0 PONLBZPO Z0SRZ0J0 a

c

0ZrlrZkZ ZbZ0apop ponopm0Z Z0Z0Z0Z0 0ZPZPZ0Z M0M0A0Z0 PO0Z0OPO S0ZQSBJ0 a

3441 8

b

3443

0s0ZqskZ ZbZ0apop po0opZ0Z Z0m0Z0Z0 0mPZPO0Z M0M0A0Z0 PO0LBZPO Z0SRZ0J0 a

0s0sbZkZ ZqZ0apZp po0opZpZ Z0Z0Z0Z0 0ZPZPZ0Z ZPZ0APL0 PZ0SBZPO Z0ZRZ0J0 a

3440 8

Hedgehog

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0lrs0ZkZ Z0Znapop pobopZnZ Z0Z0Z0Z0 0ZPZPZ0Z M0M0APZ0 PO0Z0LPO Z0SRZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3445 8 7 6 5 4 3 2 1

3448

0lrarZkZ ZbZ0Zpop po0opmnZ Z0Z0Z0Z0 0OPZPZ0Z O0M0L0A0 0Z0M0OPO Z0S0SBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3450

rZ0ZkZ0s ZpZbapop pZ0opm0Z l0Z0Z0Z0 0ZPZPZ0Z Z0M0Z0O0 PO0ZQOBO S0A0ZRJ0 a

c

0Z0srZkZ Zbl0Zpap po0opZpZ Z0m0Z0Z0 0ZPZPO0Z ZPM0L0O0 PA0ZRZBO Z0ZRZ0J0 a

3447 8

b

3449

rZbZ0skZ Zpl0apZp pZ0opmpZ Z0m0ZPZ0 0ZPMPZ0Z Z0M0A0Z0 PO0ZBZPO Z0SQZRJ0 a

bZrs0ZkZ Z0lnapop po0opZ0Z Z0Z0Z0Z0 0ZPZPA0Z ZPM0Z0OP PZ0ZQOBZ Z0SRZ0J0 a

3446 8

Hedgehog

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrs0Z0Z jbl0mpo0 po0opZ0o Z0a0m0ZP 0ZPZPZPZ ONM0ZPA0 0O0LBZ0Z ZKSRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3451 8 7 6 5 4 3 2 1

3454

rZ0ZrakZ ZblnZpmp po0opZpZ Z0Z0Z0A0 0ZPZPO0Z Z0M0Z0Z0 PO0LBZPO Z0SRM0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3456

rZ0s0akZ ZblnZpZp po0opZpZ Z0Z0Z0Z0 NZPZPZ0Z ZPZ0A0ZP PZ0L0OPZ ZBSRZ0J0 a

c

rZbZ0skZ Z0lnZpap po0opZpZ Z0Z0Z0Zn 0ZPZPZ0Z Z0MBANZ0 PO0ZQOPO S0ZRZ0J0 a

3453 8

b

3455

rZ0s0mkZ Zbl0ZpZp po0opmpZ Z0Z0Z0Z0 0ZPZPZ0Z Z0M0ZNZ0 PO0LBOPO Z0SRZ0J0 a

rm0arZkZ Zbl0Z0op po0opm0Z Z0Z0Z0Z0 0ZPMPZ0Z Z0MBA0Z0 PO0ZQZPO Z0S0ZRJ0 a

3452 8

Hedgehog

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZpZblpap pZnopZpZ Z0Z0m0Z0 0ZPZPA0Z Z0M0LNZ0 PO0ZBOPO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3457 8 7 6 5 4 3 2 1

3460

0lrZrZkZ ZbanZpo0 po0opm0o Z0Z0Z0Z0 0ZPZPZPO Z0M0APZ0 PONZ0L0Z Z0SRZBZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3462

rZ0l0skZ ZbZnapop po0opm0Z Z0Z0Z0Z0 0ZPZPOPZ M0M0ZBZ0 PO0ZQZ0O S0A0ZRJ0 a

c

qZ0srZkZ ZbZnapop po0opm0Z Z0Z0Z0Z0 0OPZPA0Z ZNM0Z0OP PZ0ZQOBZ Z0SRZ0J0 a

3459 8

b

3461

rZ0lrZkZ ZpZ0apop pZbopm0Z Z0Z0Z0Z0 0ZPZPO0Z ZPMBZ0Z0 PA0ZQZPO S0Z0ZRJ0 a

rZbl0skZ ZpZnZpap pZ0opmpZ Z0Z0Z0Z0 0ZPMPZ0Z Z0MBAPZ0 PO0L0ZPO S0Z0ZRJ0 a

3458 8

Hedgehog, blowing up with d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rl0s0akZ obZ0Zpop 0onopm0Z Z0Z0Z0Z0 0ZPZPO0Z Z0M0ABZ0 PO0MQZPO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3463 8 7 6 5 4 3 2 1

3466

qZrZrZkZ abZ0Zpop po0opm0Z Z0Z0m0Z0 0ZPZPZ0Z M0M0APO0 PORZBL0O Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3468

0Zrl0skZ obZ0apop 0o0opmnZ Z0Z0Z0Z0 0OPZPZ0Z O0M0Z0A0 0Z0MBOPO S0ZQS0J0 a

c

rZ0l0skZ ZbZ0apop po0opm0Z Z0Z0m0Z0 0ZPZPZ0Z M0M0APZ0 PO0LBZPO S0Z0ZRJ0 a

3465 8

b

3467

0s0s0ZkZ ZqZ0apop pobopm0Z Z0Z0m0Z0 0OPZPZ0Z Z0M0APZ0 PZ0MBLPO Z0SRZ0ZK a

rZ0l0skZ ZpZ0apop pZbopmnZ Z0Z0Z0Z0 0ZPZPO0Z ZPMBZ0Z0 PANZ0ZPO S0ZQZRJ0 a

3464 8

Hedgehog, blowing up with d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0lrZ0skZ ZbZnapop po0opm0Z Z0Z0Z0Z0 0OPLPZ0Z ZNM0APZ0 PZ0ZBZPO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3469 8 7 6 5 4 3 2 1

3472

rZ0lrZkZ ZbZnapop po0opm0Z O0Z0Z0Z0 0ZPMPZ0Z Z0M0APZ0 0O0LBZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3474

0Zrs0ZkZ ZqZ0apo0 po0opm0o Z0Z0Z0Z0 PZPZPA0Z ZPM0Z0O0 0Z0ZQOKO Z0ZRS0Z0 a

c

rZrZ0Z0j ZpZ0apop pZbopmnZ Z0Z0Z0Zq 0ZPZPZ0Z M0M0APZ0 PO0Z0LPO ZRZRZBJ0 a

3471 8

b

3473

0lrZrakZ ZbZnZpop po0opm0Z Z0Z0Z0Z0 0OPMPZ0Z O0M0APZ0 0Z0Z0LPO Z0SRZBJ0 a

rZrZbZkZ ZpZ0apop pZ0opmnZ l0Z0Z0Z0 0ZPZPZ0Z M0M0APZ0 PO0SBZPO ZRZQZ0J0 a

3470 8

Hedgehog, blowing up with d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrlrZkZ ZbanZpop po0opm0Z Z0Z0Z0Z0 0OPLPZ0Z O0M0Z0M0 0A0ZBOPO Z0ZRZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3475 8 7 6 5 4 3 2 1

3478

blrZrZkZ Z0ZnapZp po0opmpZ Z0Z0Z0Z0 0OPZPZ0Z ZNM0APZ0 PZRZ0LPO Z0S0ZBZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3480

0s0lrZkZ ZbZ0apop po0opm0Z Z0Z0m0Z0 0ZPZPZ0Z M0M0APZ0 PO0LBZPO Z0S0ZRZK a

c

bl0srakZ Z0ZnZpo0 po0opm0o Z0Z0Z0Z0 0ZPZPZ0Z O0M0APZ0 0O0MBLPO Z0SRZ0ZK a

3477 8

b

3479

0ZrlrZkZ ZbZnapop po0opm0Z O0Z0Z0Z0 0ZPMPZ0Z Z0M0APZ0 0O0LBZPO S0ZRZ0J0 a

bs0s0ZkZ Z0l0apop po0opm0Z Z0Z0Z0Z0 0mPZPZ0Z M0M0APZ0 PO0SBLPO Z0ZRZ0J0 a

3476 8

Hedgehog, blowing up with d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

bZrZrZkZ Z0l0apop po0opm0Z m0Z0Z0Z0 0OPZPO0Z M0M0ABZ0 PZ0S0ZPO Z0SQZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3481 8 7 6 5 4 3 2 1

3484

0Z0srZkZ Zbl0Zpap po0opmpZ Z0m0Z0Z0 0ZPZPZ0Z ZPM0L0OP PZNZROBJ A0Z0ZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3486

0ZrlrZkZ ZbZnZpap po0opmpZ Z0Z0Z0Z0 0OPZPOPZ ONMBA0ZP 0Z0ZQZ0Z Z0S0ZRJ0 a

c

0Z0srZkZ Zbl0Zpap po0opmpZ Z0Z0m0Z0 0ZPMPZ0Z ZPM0ZPZ0 PA0Z0LPO Z0S0SBJ0 a

3483 8

b

3485

rZbl0skZ ZpZnZpap pZ0opmpZ Z0Z0Z0Z0 0ZPMPZ0Z Z0M0A0Z0 PO0Z0OPO S0ZQSBJ0 a

rl0ZrZkZ ZbZnapop po0opm0Z Z0Z0Z0Z0 0ZPZPZ0Z MQM0APZ0 PO0ZBZPO Z0S0ZRJ0 a

3482 8

Hedgehog, blowing up with d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0lrZrakZ ZbZnZpop po0opm0Z O0Z0Z0Z0 0OPZPO0Z ZNMBA0Z0 0Z0ZQZPO Z0S0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3487 8 7 6 5 4 3 2 1

3490

0ZrZrakZ ZblnZpop po0opm0Z Z0Z0Z0Z0 0ZPZPZ0Z Z0M0APZP PONZ0LPZ Z0SRZBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3492

0Zrs0ZkZ Zbl0apo0 po0opmnZ Z0Z0Z0Zp PZPZPO0Z ZPM0ZNOP 0A0ZQZBZ S0ZRZ0J0 a

c

blrZrZkZ Z0anZpop po0opm0Z Z0Z0Z0Z0 0OPZPZ0Z ONM0APO0 0Z0ZBL0O ZRZRZ0J0 a

3489 8

b

3491

rZrZ0ZkZ ZqZ0apop ponopm0Z Z0Z0Z0Z0 PZPZPZ0Z ZPM0APO0 0Z0ZNZKO S0ZQZRZ0 a

0Zrs0ZkZ ZbZ0lpo0 po0opm0o Z0Z0Z0Z0 0ZPZPO0Z OPM0Z0OP 0Z0S0Z0J ZQS0ZBZ0 a

3488 8

Hedgehog, blowing up with d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0lrZrZkZ ZbZnapop po0opm0Z Z0Z0Z0Z0 0ZPMPZ0Z ZPM0APO0 PZ0ZQZBO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3493 8 7 6 5 4 3 2 1

3496

qZ0srakZ ZbZnZpop po0opm0Z Z0Z0Z0Z0 0ZPZPZ0Z ZPM0ZPZ0 PLNZ0ZPO Z0SRZBAK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3498

0ZrZrZkZ Zbl0apop po0opm0Z Z0m0Z0Z0 0ZPZPZ0Z Z0M0APZ0 POQZBZPO ZNSRZ0ZK a

c

rZ0lrZkZ ZbZ0apop po0opZ0Z Z0m0Z0Z0 0mPZPZ0Z M0M0APZ0 PO0LBZPO Z0ZRZRJ0 a

3495 8

b

3497

0l0ZrZkZ sbZ0Zpap po0opmpZ Z0Z0Z0A0 0ZPMPZ0Z Z0Z0Z0Z0 POBSQOPO Z0ZRZ0J0 a

0lrs0ZkZ ZpZ0Zpop pZbopmnZ Z0Z0Z0Z0 0ZPZPZ0Z Z0M0Z0ZP PONZ0OPZ Z0SQSBJ0 a

3494 8

Hedgehog, blowing up with d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0l0skZ obZrapop 0o0opmnZ Z0Z0Z0Z0 0ZPZPZ0O O0M0Z0A0 0O0MBOPZ Z0SQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3499 8 7 6 5 4 3 2 1

3502

0ZrZrZkZ ZbZ0Zpop poqopmnZ Z0Z0Z0Z0 0OPZPO0Z ZBS0ZQA0 PZ0M0ZPO Z0Z0S0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3504

0l0srZkZ ZbZ0apop po0opm0Z Z0Z0Z0Z0 0mPZPZ0Z ZPM0Z0O0 PANL0OBO Z0SRZ0J0 a

c

rZbl0skZ opZ0apop 0Znopm0Z Z0Z0Z0Z0 0ZPZPZ0Z Z0M0APZ0 PONZ0ZPO S0ZQJBZR a

3501 8

b

3503

bZrlrZkZ o0Z0apop 0onopm0Z Z0Z0Z0Z0 0ZPZPO0Z Z0M0A0O0 PO0L0ZBO SNS0Z0J0 a

0s0sbZkZ Z0Z0lpo0 0o0opa0Z oNm0Z0Z0 PmPZPZ0o ZPM0APZP 0Z0SBZPZ ZQS0Z0ZK a

3500 8

Hedgehog, blowing up with d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblrakZ ZpZnZpop pZ0opm0Z Z0Z0Z0Z0 0ZPMPZ0Z ZPZBZ0Z0 PA0M0OPO Z0SQZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3505 8 7 6 5 4 3 2 1

3508

0Z0s0l0Z o0ZrZpak 0onopmpZ Z0Z0Z0Zp 0ZPZPZ0Z ZPM0APOP PZ0SNL0Z Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3510

qZrZ0skZ ZbZnapop po0opm0Z Z0Z0Z0Z0 0ZPZPOPZ M0M0Z0Z0 PO0AQZBO Z0S0S0ZK a

c

rZ0s0ZkZ obm0Zpop 0o0opZ0Z Z0Z0Z0Z0 POPAPZ0Z Z0Z0ZPOB 0Z0Z0Z0O S0ZRZ0J0 a

3507 8

b

3509

blrs0ZkZ Z0Z0Zpop po0opmnZ Z0Z0Z0Z0 0OPZPO0Z O0S0ABO0 0Z0MQZ0O Z0ZRZ0ZK a

0s0s0ZkZ ZbZ0lpop 0Z0opa0Z o0m0Z0Z0 0mPZPZ0Z Z0M0APZ0 PO0Z0ZPO ZNSRLBJ0 a

3506 8

Hedgehog, blowing up with d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0lkZ obZrZpZp 0o0opapZ ZPZ0Z0Z0 PZPZPZ0Z Z0Z0APZ0 0Z0LBZPO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3511 8 7 6 5 4 3 2 1

3514

rZ0ZrZkZ Z0Z0Zpo0 0Zpa0Zno Z0ZpZ0Z0 0Z0O0Zbl Z0MBO0Z0 0ZQM0OPO ZRS0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3516

rZ0ZrZkZ Z0Z0Zpo0 0Spa0l0o Z0ZpZ0Z0 0Z0O0Zbm Z0MBO0Z0 0ZQM0OPO Z0Z0ZRJ0 a

c

rZblrZkZ opZ0apmp 0ZpZ0mpZ Z0ZpZ0Z0 0O0O0Z0A Z0MBONZ0 PZQZ0OPO ZRZ0ZRJ0 a

3513 8

b

3515

rZbZrmkZ ZpZ0lpop 0Zpa0Z0Z o0ZpZ0Z0 0O0O0Z0Z O0MBONO0 0ZQZ0OPZ ZRZ0ZRJ0 a

rZblrZkZ ZpZ0apop pZpZ0ZnZ ZPZpZ0Z0 PZ0O0Z0Z Z0MBONZP 0ZQZ0OPZ S0Z0ZRJ0 a

3512 8

Minority attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lrZkZ ZpZbZpop pZpa0mnZ Z0ZpZ0A0 PO0O0Z0M Z0MBO0Z0 0ZQZ0OPO ZRZ0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3517 8 7 6 5 4 3 2 1

3520

rZ0lrZkZ opZ0apop 0ZbZ0mnZ Z0ZpZ0A0 0Z0O0Z0Z ZQMBONZ0 PZ0Z0OPO ZRZ0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3522

rZ0Z0mkZ ZpZ0spop pZpl0Z0Z Z0MpZ0Z0 PO0O0ZbZ Z0ZBO0Z0 0ZQZ0OPO S0Z0ZRJ0 a

c

0ZrZrZkZ ZpZ0apop pZpZ0m0Z O0ZpZ0Z0 NO0O0Z0Z Z0Z0O0Z0 0Z0M0OPO SRZ0Z0J0 a

3519 8

b

3521

rZbl0skZ opZ0Zpmp 0ZpZ0apZ Z0ZpZ0Z0 0O0O0Z0Z Z0MBONZP PZQZ0OPZ S0Z0ZRJ0 a

0ZrlrmkZ opZ0Zpop 0ZpZ0a0Z Z0ZpZ0Z0 0O0O0ZbZ Z0MBO0Z0 PZQM0OPO S0Z0ZRJ0 a

3518 8

Minority attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrmkZ ZpZ0lpop 0ZpZ0Z0Z o0ZpZ0Z0 0Z0OnZ0Z O0MBONZ0 0OQZ0OPO ZRS0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3523 8 7 6 5 4 3 2 1

3526

rZ0lrZkZ ZpZnapop 0ZpZ0m0Z Z0ZpZ0A0 0O0O0Z0Z Z0MQONZ0 0Z0Z0OPO ZRZ0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3528

rZblrZkZ opZ0Zpop 0ZpZ0anZ Z0ZpZ0Z0 0O0O0Z0Z Z0MBONZP PZQZ0OPZ S0Z0ZRJ0 a

c

rZ0ZrmkZ opZ0lpop 0ZpZ0Z0Z Z0ZpZbZ0 NO0OnZ0Z Z0ZBONZP PZQZ0OPZ ZRZ0ZRJ0 a

3525 8

b

3527

rZblrmkZ opZ0Zpop 0Zpa0m0Z Z0ZpZ0A0 0Z0O0Z0Z Z0MBONZ0 POQZ0OPO ZRZ0ZRJ0 a

rZbl0skZ opZ0apop 0ZpZ0ZnZ Z0ZpZ0Z0 0Z0O0Z0Z Z0MBONO0 POQZ0OPZ ZRZ0ZRJ0 a

3524 8

Minority attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZrmkZ opZbZpo0 0ZPl0m0o Z0ZpZ0Z0 0Z0O0Z0Z Z0MBONZ0 PZQZ0OPO ZRZ0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3529 8 7 6 5 4 3 2 1

3532

rZ0l0mkZ ZpZnspop 0ZpZbZ0Z Z0ZpZ0Z0 0o0O0Z0Z O0MBONZ0 0Z0Z0OPO ZQZ0SRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3534

rZ0ZrZkZ ZpZ0lpop 0ZpZ0ZnZ ZPZpZ0Z0 0Z0OnZbZ Z0MBONZ0 0ZQZ0OPO ZRZ0ZRJ0 a

c

rZ0l0skZ opm0apZp 0ZpZ0ZpZ Z0ZpZ0Z0 0O0O0A0Z O0mQONZ0 0Z0Z0OPO S0Z0ZRJ0 a

3531 8

b

3533

rZ0ZrZkZ opZ0Zpop 0mplbZnZ Z0ZpZ0Z0 0Z0O0Z0Z Z0ZBONZP POQZNOPZ ZRS0Z0J0 a

rZ0ZrmkZ ZpZ0lpop pZpZbZ0Z Z0ZpZ0Z0 NO0OnZ0Z Z0ZBONZ0 PZQZ0OPO ZRZ0ZRJ0 a

3530 8

Minority attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zkm0s opZ0mpop 0lpZ0ZbZ Z0MpZ0Z0 0Z0O0Z0Z L0Z0O0A0 PO0ZBOPZ S0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3535 8 7 6 5 4 3 2 1

3538

rZ0lkZ0s opZ0apop 0ZpZ0m0Z Z0ZpAnZ0 0Z0O0Z0Z Z0MNO0Z0 PO0Z0OPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3540

rZ0Z0skZ opZnlpop 0ZpZ0Z0Z Z0ZpZ0Z0 0O0OnZ0Z Z0MNO0Z0 PZQZ0OPO S0Z0ZRJ0 a

c

rZbZ0skZ ZpZ0lpZp pZpZ0ZpZ Z0ZpZ0Zn QO0O0Z0Z Z0ZBO0Z0 PZ0ZNOPO S0Z0ZRJ0 a

3537 8

b

3539

rZ0ZrmkZ ZpZ0Zpo0 pZplbZ0Z Z0ZpZ0Zp NO0O0ZnZ Z0ZBO0M0 PZQZ0OPO ZRS0Z0J0 a

rZ0l0skZ ZpZ0apmp 0ZpZ0mpZ ZPZpZ0Z0 0Z0O0Z0A Z0MQONZ0 0Z0Z0OPO ZRZ0ZRJ0 a

3536 8

Minority attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrmkZ opZ0l0op 0ZpZ0Z0Z Z0Z0ZpZ0 0Z0OpZ0Z Z0M0O0ZP POQM0OPZ S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3541 8 7 6 5 4 3 2 1

3544

rZ0ZrZkZ o0Z0Zpop 0mpZ0lnZ Z0ZpZ0Z0 0Z0O0Z0Z O0MQONZP 0Z0Z0OPZ S0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3546

rZ0Z0skZ opZqZpop 0ZpZ0a0Z Z0ZpZ0Z0 0Z0O0Z0Z Z0MQO0Z0 PO0Z0OPO S0Z0J0ZR a

c

rZ0ZrZkZ ZpZnlpZp 0ZpZ0ZpZ o0ZpZ0Z0 0O0OnZ0Z O0M0ONZ0 0ZQZ0OPO ZRZ0ZRJ0 a

3543 8

b

3545

rZbl0skZ ZpZ0apmp pZpZ0mpZ Z0ZpA0Z0 0O0O0Z0Z O0MBONZ0 0ZQZ0OPO S0Z0ZRJ0 a

rZ0ZrakZ ZpZnZpop 0ZpZqm0Z o0ZpZ0Z0 0Z0O0Z0Z O0M0ONA0 0OQZ0OPO ZRZ0ZRJ0 a

3542 8

Minority attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrZkZ opZ0lpop 0ZpZ0ZnZ Z0ZpZ0Z0 0O0OnZ0Z Z0MBONZ0 PZQZ0OPO ZRZ0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3547 8 7 6 5 4 3 2 1

3550

rZ0Z0skZ opZ0Zpo0 0lpmbZ0o Z0ZpZ0Z0 0Z0O0Z0Z O0ZBO0Z0 0OQA0OPO ZRZ0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3552

rZ0Z0skZ opZ0Zpo0 0ZpZ0Z0o Z0ZpZ0Z0 0Z0O0ZqZ O0L0O0Z0 0O0Z0OPO S0Z0ZRJ0 a

c

rZbZ0skZ ZpZ0lpmp pZpZ0apZ Z0MpZ0Z0 PO0O0Z0Z Z0ZBONZ0 0ZQZ0OPO ZRZ0ZRJ0 a

3549 8

b

3551

rZ0ZrZkZ ZpZ0ZpZp pZpm0lpZ Z0MpZ0Z0 0Z0O0ZbZ ZQZBO0O0 PO0Z0OPZ Z0S0S0J0 a

rZ0lrZkZ ZpZ0ZpZp 0ZpZ0apZ ZPZpZnZ0 0Z0O0Z0Z Z0M0ONZ0 0ZQZ0OPO Z0S0ZRJ0 a

3548 8

Minority attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ ZpZnZpo0 0ZpZ0l0o Z0ZpZ0Z0 0O0O0ZbZ ZQS0ONZ0 0Z0ZBOPO Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3553 8 7 6 5 4 3 2 1

3556

rZbZrZkZ ZpZ0Zpop pZpZ0Z0Z Z0Z0Z0Z0 PO0OpZ0l Z0Z0O0MP 0ZQZ0OPZ ZRZ0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3558

rZ0Z0skZ ZbonZpo0 pZ0l0a0o ZpZpZ0Z0 0O0O0Z0Z O0M0ONZ0 0Z0ZBOPO Z0SQZRJ0 a

c

rZ0ZrmkZ opZ0Zpop 0Zpmbl0Z Z0ZpZ0Z0 NZ0O0Z0Z Z0ZBONZP POQZ0OPJ ZRZ0ZRZ0 a

3555 8

b

3557

rZbZrZkZ opZnlpop 0ZpZ0m0Z Z0ZpZ0Z0 0O0O0Z0Z Z0MBONZ0 PZ0Z0OPO SQZ0ZRJ0 a

0Z0ZrakZ ZbZnZpZ0 0opl0Zpo s0ZpZ0Z0 PZ0O0Z0Z Z0M0ONZ0 0ZQZ0OPO ZRZ0SBJ0 a

3554 8

Minority attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0lrmkZ ops0apop 0ZpZbZ0Z Z0ZpZ0Z0 NO0O0Z0Z Z0ZBONZP PZQZ0OPZ Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3559 8 7 6 5 4 3 2 1

3562

0Z0lrZ0Z ZpZ0apjp 0ZpZ0mpZ ZPZpZ0Z0 0Z0O0Z0Z s0MQONZP 0Z0Z0OPZ ZRZ0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3564

rZ0lrmkZ opZ0Z0mp 0ZpZbopZ Z0ZpZ0Z0 0O0O0Z0Z Z0MBO0ZP PZQZ0OPM ZRZ0ZRJ0 a

c

rZbZrZkZ ZpZ0lpop pZpZ0ZnZ Z0ZpZ0Z0 PO0OnZ0Z Z0MBONZ0 0ZQZ0OPO ZRZ0ZRJ0 a

3561 8

b

3563

rZbZrZkZ ZpZnlpZp 0ZpZ0ZpZ o0ZpZ0Zn NZ0O0Z0Z O0ZBONZP 0OQZ0OPZ ZRZ0ZRJ0 a

0Z0srZkZ ZpZ0lpo0 pZpZ0ZpZ Z0Z0Z0Z0 PO0OpZ0Z Z0Z0O0Z0 0ZQZ0OPO ZRS0Z0J0 a

3560 8

Minority attack

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0skZ ZpZ0Zpop pZps0Z0m Z0Z0ZbZ0 PO0OpZ0l Z0S0O0MP 0L0Z0OPZ Z0S0ZBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3565 8 7 6 5 4 3 2 1

3568

0ZrZqskZ opZ0a0Zp 0ZpmpZ0Z Z0ZpMpob 0ZPO0Z0Z ZPZ0ZPO0 PAQZPZBO Z0S0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3570

rZbZ0s0j opZnl0op 0ZpZpm0Z Z0ZpMpZ0 0ZPO0O0Z ZPZ0O0Z0 PZ0M0OBO S0ZQZRJ0 a

c

rZ0Z0skZ opZnlbop 0Zpapm0Z Z0ZpZpZ0 0ZPO0Z0Z APZNZ0O0 PZ0ZPOBO SNL0ZRJ0 a

3567 8

b

3569

rm0ZbskZ opZ0l0op 0ZpZpm0Z Z0ZpZpZ0 PZPO0Z0Z ZPZ0ZNO0 0ZNZPOBO S0ZQZRJ0 a

rmbZ0skZ o0Z0l0op 0opapm0Z Z0ZpMpZ0 0ZPO0Z0Z ZPZ0Z0O0 PZ0MPOBO S0AQZRJ0 a

3566 8

Stone wall

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ opZ0Z0op 0Zpapm0Z Z0ZpMpZ0 0ZPO0O0Z Z0Z0Z0O0 PO0M0OBO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3571 8 7 6 5 4 3 2 1

3574

0m0ZqskZ s0a0Z0op bZpZpZ0Z opOpMpZ0 0Z0OnZ0O OPZ0ZNO0 0Z0ZPOBZ S0AQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3576

rmbZ0skZ opZ0l0op 0ZpZpm0Z Z0ZpZpZ0 PZPO0Z0Z MPZ0ZNO0 0Z0ZPOBO S0ZQZRJ0 a

c

0ZrZ0skZ obZ0l0op 0opZpZ0Z Z0ZpOpZ0 0ZPOnO0Z Z0M0O0Z0 POQZ0ZBO ZKZRZ0S0 a

3573 8

b

3575

rZ0ZbskZ opZnZ0op 0lpZpm0Z Z0ZpMpZ0 0ZPO0O0Z ZQZ0O0Z0 PO0M0OBO S0Z0J0ZR a

rm0Z0skZ obZ0l0Zp 0opa0ZpZ Z0ZpMpZ0 0Z0OnA0O ZPZ0ZNO0 PZQZPOBZ S0Z0ZRJ0 a

3572 8

Stone wall

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0l0s0j obZ0Z0op 0opZpZ0Z Z0ZpOpZ0 QOPO0Z0Z Z0M0Z0Z0 PZ0ZPOBO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3577 8 7 6 5 4 3 2 1

3580

rZbZ0Zrj opZnl0op 0ZpZpm0Z Z0ZpZpZ0 0ZPO0O0Z Z0M0ONZ0 PO0ZQOBO S0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3582

0ZrZ0skZ ZbZ0l0op no0a0m0Z o0opMpZ0 0Z0O0Z0Z ZPZ0O0O0 PA0MQOBO Z0SRZ0J0 a

c

rZbl0skZ opZ0Z0op 0ZpZpm0Z Z0ZpmpZ0 0ZPO0O0Z Z0Z0O0Z0 PO0Z0OBO SNZQZRJ0 a

3579 8

b

3581

rZrZ0ZkZ o0Znl0op bopapZ0Z O0ZpZpZ0 0ZPOnZ0Z ZPZ0ZNO0 0AQMPOBO S0S0Z0J0 a

rZ0lbs0j opZ0Z0op 0ZnmpZ0Z Z0ZpMpZ0 0O0O0O0Z Z0Z0O0Z0 PL0M0OBO S0S0Z0J0 a

3578 8

Stone wall

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0l0skZ o0ZbZ0op 0ZpZpm0Z ZpZpZpZ0 0ZPO0O0Z ZQZ0ZNZ0 PO0MPOBO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3583 8 7 6 5 4 3 2 1

3586

rZ0ZbskZ opZnl0o0 0ZpZpm0o Z0ZpZpZ0 0ZPO0M0Z ZPZ0ZNO0 PZ0ZPOBO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3588

rm0Z0skZ opZ0l0o0 0Z0Zpm0o Z0ZpZpZb 0Z0O0O0Z O0M0ONZ0 0OQZ0OBO S0Z0Z0SK a

c

rZbZ0skZ opZ0l0op 0ZpZpZ0Z Z0ZpOpZ0 0ZPZ0O0Z Z0Z0Z0Z0 PO0LPOBO S0Z0ZRJ0 a

3585 8

b

3587

rmbZ0skZ opZ0Z0o0 0Zpa0l0o Z0ZpZpZ0 0Z0O0Z0Z ZQM0ZNO0 PO0ZPOBO S0Z0ZRJ0 a

rZ0Z0skZ ZbZ0l0op nopZpm0Z o0ZpMpZ0 PZPO0Z0Z MPZ0Z0O0 0ZQZPOBO S0S0Z0J0 a

3584 8

Stone wall

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ obZ0Z0op nopapm0Z Z0ZpMpZ0 0ZPO0A0Z Z0Z0ZNO0 POQZPOBO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3589 8 7 6 5 4 3 2 1

3592

rZ0Z0skZ obZqZ0op 0opapm0Z Z0OpZpZ0 0Z0O0Z0Z ZPZNZPO0 PZ0ZPZBO S0AQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3594

0ZrZ0skZ ZbZ0l0op 0opapZ0Z o0ZpZpZ0 0mPOnZ0Z ZPZNZNO0 PA0ZPOBO ZQS0ZRJ0 a

c

rZ0ZbskZ opZnl0op 0Zpapm0Z Z0ZpMpZ0 0ZPO0Z0Z ZPZ0ZNO0 PA0ZPOBO S0ZQZRJ0 a

3591 8

b

3593

0ZrZ0skZ ZbZnl0op no0ZpZ0Z oQZpOpZ0 0Z0Z0Z0Z ZPZ0O0O0 PA0M0OBO Z0S0ZRJ0 a

rm0lbskZ opZ0Z0op 0ZpapZ0Z Z0ZpZpZ0 0OPOnZ0Z Z0M0ZNO0 PZQZPOBO ZRA0ZRJ0 a

3590 8

Stone wall

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0s0j o0Znl0op 0opZpZ0Z Z0ZpOpZ0 0ZPZ0ZnZ ZPZ0ZNO0 PAQZPOBO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3595 8 7 6 5 4 3 2 1

3598

rZ0l0skZ opZnZ0op 0Z0Zpm0Z Z0ZpMpZb 0Z0O0O0Z Z0M0O0Z0 POQZ0OBO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3600

0s0ZbskZ ZpZ0l0Z0 pZpapm0o Z0ZpMpo0 POPO0Z0Z Z0ZNZ0O0 0ZQZPOBO S0Z0ZRJ0 a

c

0sbZ0skZ opZ0l0o0 0Zpapm0o Z0ZpZpZ0 0ZPO0Z0Z Z0ZNO0O0 POQM0OBO S0Z0ZRJ0 a

3597 8

b

3599

0ZrlnskZ o0m0a0op bopZpZ0Z Z0ZpZpZ0 0ZPO0M0Z ZPM0O0O0 PZQA0OBO Z0ZRS0J0 a

rZbZqskZ ZpZna0o0 0ZpZpZ0o o0OpZpZ0 0Z0O0Z0Z Z0ZNO0O0 PO0M0OBO Z0SQZRJ0 a

3596 8

Stone wall

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zqs0j Z0Zna0op bo0mpZ0Z o0ZpZpZ0 PZ0O0A0Z ZPZ0ZNO0 0ZQZPOBO Z0MRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3601 8 7 6 5 4 3 2 1

3604

rZbZ0skZ opZnZ0op 0ZpapZ0Z Z0ZpZpZq 0ZPOnZ0Z ZPZNZNO0 PZQZPOBO S0A0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3606

rZ0Z0skZ ZbZ0l0op nopapZ0Z o0ZpZpZ0 PZPOnZ0Z ZPZNZNO0 0AQZPOBO Z0ZRZRJ0 a

c

rm0ZbskZ opZ0l0op 0ZpZpm0Z Z0ZpMpZ0 0ZPO0Z0Z ZPM0ZPO0 PZ0ZPZBO S0ZQZRJ0 a

3603 8

b

3605

rmbZ0skZ o0Z0l0op 0o0apm0Z Z0ZpMpZ0 0Z0O0Z0Z ZPZ0Z0O0 PZQZPOBO SNA0ZRJ0 a

rZ0Z0skZ ZpZ0l0Zp 0mpZpm0Z o0ZpZpo0 0ZPO0Z0Z OPL0Z0O0 0Z0MPOBO S0Z0ZRJ0 a

3602 8

Stone wall

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZqZkZ opZ0Z0op 0ZpZpZ0Z Z0ZpMpmr 0ZPO0Z0Z ZPZ0O0O0 PZ0Z0OBO Z0SQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3607 8 7 6 5 4 3 2 1

3610

rZ0Z0skZ obZnl0op 0opZpm0Z Z0ZpZpZ0 0ZPO0Z0Z MPZ0ZNO0 PL0ZPOBO Z0S0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3612

rZ0Z0skZ o0ZnZ0op blpZpm0Z Z0ZpZpZ0 0O0O0Z0Z Z0L0Z0O0 PZ0ZPOBO SNA0ZRJ0 a

c

rZbZqskZ o0ZnZ0Zp 0ZpZpa0Z ZpZpZpo0 0OPOnZ0Z Z0ZNZNO0 PZQZPOBO ZRA0ZRJ0 a

3609 8

b

3611

0ZrZ0skZ obZnl0op 0opZpm0Z Z0ZpZpZ0 0ZPO0Z0Z ZPZNZNO0 PZ0ZPOBO Z0SQZRJ0 a

0ZbZ0s0j ZpZnl0op 0ZpapZ0Z ZPZpZpZ0 0ZPOnA0Z s0M0ZNO0 0ZQZPOBO ZRZ0ZRJ0 a

3608 8

Stone wall

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ ZbZnl0op nopZpZ0Z Z0ZpOpZ0 PZPZ0Z0Z Z0Z0O0O0 PA0MQOBO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3613 8 7 6 5 4 3 2 1

3616

0Z0ZbZrj Zpa0l0Zp 0ZpZpm0Z Z0OpZpo0 0O0O0Z0Z Z0ZNZPO0 0A0LPZBO S0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3618

0Z0s0skZ obZ0Z0op no0apZ0Z Z0opZpZq 0ZPOnZ0Z ZPZNONO0 PA0ZQOBO Z0S0ZRJ0 a

c

rZ0Z0s0j ZpZba0Z0 0ZpmpmqZ o0ZpZpop PZPO0Z0Z ZPZ0OPO0 RZ0ZNZBO Z0SQANJ0 a

3615 8

b

3617

rmbl0s0j opZ0a0op 0ZpZpm0Z Z0ZPZpZ0 0Z0O0Z0Z Z0M0ZNO0 PO0ZPOBO ZRAQZRJ0 a

rZbZqskZ Z0Z0a0op 0opZpZ0Z Z0ZpOpZ0 pOPZ0Z0Z O0A0O0ZP 0ZQZBOPZ S0Z0ZRJ0 a

3614 8

Stone wall

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ opZna0op 0ZpZpZ0Z Z0ZpZpZ0 0ZPOnA0Z Z0Z0ZNO0 POQMPOBO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3619 8 7 6 5 4 3 2 1

3622

rZ0lnakZ ZpZbZrZp pZ0o0ZnZ Z0ZPo0o0 0Z0ZPo0Z ZQS0ZPZ0 PONABMPO Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3624

rZbZ0skZ ZpM0l0a0 0A0o0mnZ O0ZPo0Z0 0Z0ZPo0o Z0Z0ZPZ0 0O0ZBZPo S0ZQMRZK a

c

rZblnakZ ZpZ0ZrZp 0O0o0ZnZ Z0oPo0o0 0ZNZPoPZ A0M0ZPZ0 PZ0ZBZ0O S0ZQZRJ0 a

3621 8

b

3623

rZblnZkZ ZpZ0a0sn pZ0o0Z0Z Z0ZPo0Zp PO0ZPo0Z M0ZNZPo0 0Z0ZBZPO Z0SQZRAK a

0ZrZ0Z0Z Z0ZQm0sk 0o0o0m0a oNZPo0Zp 0ZPZPopZ ZPZNZPZ0 0Z0AQZPO S0Z0ZRZK a

3620 8

King's Indian attack against the white king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zbl0Zrj ZpZ0Z0ap rZ0o0ZnZ ZNoPopZn PZPZ0O0Z ZNZ0Z0O0 RZQABZ0O Z0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3625 8 7 6 5 4 3 2 1

3628

rZ0l0s0j Z0obZ0ap 0o0o0m0Z Z0ZPopZ0 pOPZ0ZPO OnM0APZ0 0Z0ZBZNZ ZRZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3630

NZ0l0ZkZ opZ0Zrap 0Z0o0mnZ Z0ZPo0Z0 0Z0ZPo0Z Z0ZNZPZb POQABZ0O Z0S0ZRJ0 a

c

rZbl0akZ opM0Z0s0 0Z0o0m0m O0ZPo0Zp 0O0ZPopZ Z0Z0ZPZP 0ZQZBMPZ Z0S0ARJ0 a

3627 8

b

3629

0Zrl0skZ opZbm0ap 0Z0o0mpZ Z0ZPo0Z0 PZ0ZPoPO ZPMNZPZ0 0Z0ABZ0Z S0ZQZRJ0 a

rZbl0skZ opZ0Z0a0 0Z0o0mnZ O0ZPo0op 0Z0ZPo0Z Z0MNZPZ0 0O0ZBAPO S0ZQZRJ0 a

3626 8

King's Indian attack against the white king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0skZ Zpo0Z0ap pZ0o0mnZ Z0OPo0o0 0Z0ZPo0Z M0ZNZPZ0 PO0ABZPO Z0SQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3631 8 7 6 5 4 3 2 1

3634

rZbl0skZ ZpZ0Z0a0 pZ0o0m0Z Z0ZPo0op 0Z0ZPo0m ZQM0ZPZP PORABMPZ Z0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3636

rZ0lnakZ ZpZbZ0s0 0Z0o0Z0Z ZNZPo0op PZ0ZPo0m ZQZ0ZPZP 0O0ABMPZ Z0S0ZRJ0 a

c

rZ0lnakZ ZpZbZ0s0 0Z0o0Z0Z ZNZPo0op PZ0ZPo0m ZQZ0ZPZP 0O0ABMPZ Z0S0ZRJ0 a

3633 8

b

3635

rZbl0akZ ZpZ0Z0s0 pZ0o0m0Z Z0ZPo0Z0 PZ0ZPoPm M0Z0Z0Z0 0O0ABMPZ S0SQZ0J0 a

rZ0lna0j ZpZbZ0s0 0Z0o0Z0Z ONZPo0op 0Z0ZPo0m ZQZ0ZPZP 0O0ABMPZ Z0S0ZRJ0 a

3632 8

King's Indian attack against the white king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0ZkZ opZ0Zrap 0Z0o0mnZ ZNZPo0o0 0Z0ZPo0Z Z0Z0ZPZ0 PO0ABMPO Z0SQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3637 8 7 6 5 4 3 2 1

3640

rZbl0ZkZ ZpZnZ0ap pZ0o0Zns Z0ZPo0o0 0O0ZPZ0Z Z0M0ZPO0 PZ0ZBANZ Z0SQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3642

rZ0l0ZkZ opZ0Zra0 0Z0o0mnZ OBZPo0Zp 0O0ZPopZ Z0Z0ZPZ0 0Z0Z0APO Z0SQMRZK a

c

rZ0l0skZ opobZ0ap nZ0o0ZnZ ZNZPo0o0 QO0ZPo0Z Z0Z0ZPZ0 PZ0ZBAPO Z0S0MRJ0 a

3639 8

b

3641

rZbl0akZ ZpZ0Z0s0 pZ0o0m0Z Z0ZPo0Z0 PZ0ZPoNm MQZ0ZPZ0 0ORZBZPZ Z0Z0ARJ0 a

rZ0l0akZ opMbZrZp 0Z0o0mnZ O0ZPo0Z0 0O0ZPopZ Z0Z0ZPZ0 0Z0ZBAPO Z0SQMRJ0 a

3638 8

King's Indian attack against the white king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0ZkZ opo0Zra0 0ZPo0mnZ Z0ZPo0op PZ0ZPo0Z Z0MNZPZP 0O0ZBAPZ S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3643 8 7 6 5 4 3 2 1

3646

rZbl0Z0s opo0Zka0 0Z0o0mnZ Z0OPo0o0 0O0ZPoPZ Z0MNZPZ0 PZ0ZBZKZ S0ZQARZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3648

rZbl0akZ opo0Z0Zr 0ZPo0mnZ OPZPo0op 0Z0ZPo0Z Z0M0ZPZP 0Z0ZBAPZ S0ZQMRJ0 a

c

0l0Z0ZkZ ZpZ0Zra0 0Z0o0ZnZ ONZPo0mp QO0ZPo0Z Z0Z0ZPoP 0Z0ZBZPZ Z0Z0MRZK a

3645 8

b

3647

rZbl0s0j Z0o0Z0a0 0ZPo0mnZ ZNZ0o0Zp 0ZBZPo0Z Z0ZNZPo0 0OQZ0ZPO S0Z0ARJ0 a

rZbl0ZkZ o0o0ZrZp Po0a0ZnZ Z0oPo0o0 0ZBZPoPZ Z0M0ZPZ0 0O0ZQZ0O S0Z0MRJ0 a

3644 8

King's Indian attack against the white king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0s0Z MpZqZ0Zk 0Z0o0Zna OPZPo0Z0 0Z0ZPo0Z Z0Z0Z0Z0 0Z0Z0LPO S0Z0MRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3649 8 7 6 5 4 3 2 1

3652

rZbl0skZ opZ0Z0a0 0Z0o0mnZ ONZPo0Zp 0O0ZPopZ Z0Z0ZPZ0 0Z0ZBAPO S0ZQMRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3654

rZbl0a0j o0Z0ZrZ0 0Z0o0mnZ Z0oPo0o0 QZPZPoPZ Z0M0ZPZ0 PS0ABM0Z Z0Z0ZRJ0 a

c

rZbl0akZ opZ0ZrZp 0Z0o0mnZ MNZPo0o0 PO0ZPo0Z A0Z0ZPZ0 0Z0ZBZPO S0ZQZRJ0 a

3651 8

b

3653

rZblnskZ opZ0m0a0 0Z0o0ZpZ Z0oPo0Zp 0ZPZPoPZ Z0MNZPZP PO0ABZ0Z S0ZQZRJ0 a

rZbl0ZkZ opo0ZrZ0 0Z0o0m0Z Z0OPo0o0 PO0ZPoPm ZNMQZPZ0 0Z0ZBJ0Z Z0S0ZRZ0 a

3650 8

King's Indian attack against the white king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0a0Z0j ZpZ0l0sn 0M0o0Z0Z O0ZPo0Zp BZ0ZPo0m Z0Z0ZPZ0 0Z0ZQZPJ Z0Z0A0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3655 8 7 6 5 4 3 2 1

3658

0ZbZ0skZ Z0l0m0Zp pS0o0s0Z O0oPopZ0 0ZPZ0Z0Z L0Z0Z0Z0 0ZBZNOPO Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3660

0Zbl0s0Z Zpo0Znj0 0Z0o0apZ Z0ZPo0mp 0OPZPoPZ ZNM0ZPZP 0Z0ZBZKZ Z0L0A0ZR a

c

0Zbl0s0j Lpo0Z0ap 0Z0o0mnZ Z0ZPo0o0 0OPZPo0Z ZNM0ZPZ0 0Z0ABZPO Z0Z0ZRJ0 a

3657 8

b

3659

rZ0l0Zrj Zpo0m0Zp 0Z0o0m0Z ZNOPo0Z0 0O0ZPo0Z Z0Z0ZPZ0 0Z0M0Z0O Z0SQZRZK a

0Zbl0snj Z0onZ0ap 0Z0o0Z0Z ONoPo0o0 pZ0ZPo0Z O0ZBZPZ0 0ZQZ0ZPO ZRA0ZRJ0 a

3656 8

King's Indian attack against the white king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZbZrskZ Zno0Zqa0 0o0o0m0o oNZPo0Z0 0OPZPZPZ O0Z0Z0O0 0Z0MBZKZ S0ZQS0A0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3661 8 7 6 5 4 3 2 1

3664

rZ0ZqZkZ opobZ0a0 0Z0o0Z0o Z0ZPo0o0 0OPZPs0m Z0M0MpO0 PZ0A0Z0O Z0SQZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3666

rZ0ZqskZ Z0obZ0an no0o0Z0Z ZNZPo0op 0OPZPo0Z Z0Z0ZPZ0 0Z0MBAPO ZRZQZRJ0 a

c

rZbl0Z0j opo0m0ap 0Z0o0mrZ Z0OPo0o0 0O0ZPo0Z ZQMNZPZ0 PZ0ZBAPO S0S0Z0J0 a

3663 8

b

3665

rZ0l0skZ ZpobZ0a0 0Z0o0m0o Z0ZPo0o0 0OPZPo0Z Z0L0ZPZ0 0Z0MBAPO S0Z0ZRJ0 a

rZbl0akZ opZ0ZrZp 0Z0o0mnZ Z0ZPo0Z0 0Z0ZPopZ Z0MNZPZ0 PORLBAPO Z0S0Z0J0 a

3662 8

King's Indian attack against the white king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0mkZ Z0o0m0ap pZPo0Z0s ZPZ0o0o0 PZ0ZPo0Z Z0M0ZPZ0 0Z0ZBAPO S0ZQMRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3667 8 7 6 5 4 3 2 1

3670

rZbZ0akZ ZpZ0Z0s0 pl0o0m0Z Z0ZPo0Z0 PZ0ZPoPm Z0M0Z0Z0 0ORZBMPZ S0ZQAKZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3672

rZ0Z0s0j Z0o0l0Z0 PZPo0a0Z Z0Z0o0Zn 0ZBZPmQZ Z0Z0ZNZ0 0O0Z0APZ S0Z0ZRJ0 a

c

rZbl0skZ opo0m0ap 0Z0o0ZpZ ZPZPo0Mn 0ZPZPZ0Z Z0M0ZPO0 PZ0ZBZKZ S0AQZRZ0 a

3669 8

b

3671

rZbl0skZ Z0Z0Z0a0 po0o0mnZ ZPZPo0op 0Z0ZPo0Z Z0MNZPZ0 PZ0ZBAPO S0ZQZRJ0 a

rZ0l0skZ ZpobZ0a0 0Z0o0mnZ ONOPo0Zp 0Z0ZPopZ Z0Z0ZPZ0 0O0ZBAPO S0ZQMRJ0 a

3668 8

King's Indian attack against the white king

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZqZ0skZ o0ZbZ0a0 0o0o0mnZ ONZPo0o0 0MPZPoPZ S0Z0ZPZ0 0Z0ZBAKZ Z0ZQZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3673 8 7 6 5 4 3 2 1

3676

rZ0lka0s ZnZ0Zpop pZ0opm0Z Z0Z0Z0A0 0o0MPZ0Z Z0M0Z0Z0 POPZ0OPO S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3678

rlbZ0skZ Z0Znapop pZ0opZ0Z Z0Z0Z0O0 0o0APO0Z Z0MBZQZ0 POPZ0Z0O Z0JRZ0ZR a

c

rm0Zka0s Zbl0Zpop pZ0opm0Z Z0Z0Z0Z0 Po0MPZ0Z Z0M0Z0O0 0OPZ0OBO S0AQS0J0 a

3675 8

b

3677

rZ0lka0s ZbZ0Zpo0 pZ0opm0o Zpm0Z0Z0 0Z0MPZ0A ZBM0Z0Z0 POPZ0OPO S0ZQS0J0 a

0Z0s0Z0s ZkZ0apZp pZ0opo0Z l0m0Z0Z0 0o0MPZQZ Z0M0Z0Z0 POPZ0OPO Z0JRS0Z0 a

3674 8

Sicilian piece sacrifice on d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zka0s ZbZnZpop pl0opm0Z ZpZ0Z0A0 0Z0MPO0Z Z0MBZQZ0 POPZ0ZPO Z0JRS0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3679 8 7 6 5 4 3 2 1

3682

rm0Zka0s Zbl0Zpop pZ0opm0Z Z0Z0Z0Z0 Po0MPZ0Z Z0M0Z0O0 0OPZ0OBO S0AQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3684

0l0s0skZ ZbZ0apZp ponopmpZ Z0Z0Z0Z0 0ZPMPO0Z ZPM0ZRZ0 PABZ0ZPO Z0SQZ0ZK a

c

rZ0Zkans Zbl0Zpop pZnopZ0Z Z0Z0Z0Z0 Po0MPZ0Z Z0M0Z0O0 0OPZ0OBO S0AQS0J0 a

3681 8

b

3683

rZbZka0s ZplnZpZp pZ0ZpZpA Z0m0O0Z0 0Z0M0Z0Z ZBM0Z0Z0 POPZQZPO S0Z0ZRJ0 a

rZ0Zkans Zbl0Zpop pZnopZ0Z Z0Z0Z0Z0 Po0MPZ0Z Z0M0Z0O0 0OPZ0OBO S0AQS0J0 a

3680 8

Sicilian piece sacrifice on d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0lka0s ZbZ0Zpop pm0opm0Z Z0Z0Z0Z0 Po0MPO0Z Z0M0ZBZ0 0OPZ0ZPO S0AQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3685 8 7 6 5 4 3 2 1

3688

rZ0Z0skZ ZplbaNZp pZ0opZpZ Z0Z0Z0On PZ0ZPZ0Z Z0M0A0Z0 0OPZ0L0O S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3690

rZ0Zka0s ZblnZpop pZ0opm0Z Z0Z0Z0Z0 RZ0MPZ0Z Z0M0Z0O0 0OPZ0OBO Z0AQS0J0 a

c

rZ0Z0skZ Z0Zqapop 0Zbopm0Z o0Z0Z0Z0 0o0APO0Z O0MBZRL0 0OPZ0ZPO Z0Z0S0J0 a

3687 8

b

3689

rZbZnskZ Z0l0apop ponopZ0Z Z0Z0Z0O0 0ZPMPO0Z O0M0A0Z0 0O0ZBZ0O Z0SQJ0ZR a

0Zks0a0s Z0lbZpZ0 pZnopZpZ ZpZ0Z0On 0Z0ZPO0Z ZNM0ZBZ0 POPA0L0Z Z0JRS0Z0 a

3686 8

Sicilian piece sacrifice on d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rl0Z0skZ Z0Znapop pobopZ0Z Z0Z0Z0Z0 PZPZPO0Z ZPMBZ0Z0 0A0ZQZPO S0Z0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3691 8 7 6 5 4 3 2 1

3694

rl0s0ZkZ ZbZnapop pZ0o0Z0Z ZpZ0o0O0 0Z0APO0Z Z0MBZ0ZQ POPZ0Z0O Z0JRZ0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3696

rZbZka0s Z0Z0ZpZ0 pZ0opZpO ZpZ0Z0An 0ZqMPZ0O Z0M0ZPZ0 POPL0Z0Z ZKZ0S0S0 a

c

0Z0Z0skZ Zblrapop pZnopm0Z ZpZ0Z0Z0 0Z0ZPO0Z ONMBZ0ZQ 0OPA0ZPO Z0Z0SRZK a

3693 8

b

3695

rZ0ZkZ0s Zblnapop po0opm0Z Z0Z0Z0A0 0ZPMPZ0Z Z0M0Z0O0 PO0Z0OBO S0ZQS0J0 a

0s0snZkZ Zblnapop po0opZ0Z Z0Z0Z0O0 0ZPZPO0Z M0M0ABZ0 PO0ZQZ0O Z0SRZ0J0 a

3692 8

Sicilian piece sacrifice on d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrakZ Z0l0Z0o0 pZbZpZ0Z Z0Z0o0o0 0o0ZPZ0Z O0M0Z0ZR 0OPZ0LBO Z0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3697 8 7 6 5 4 3 2 1

3700

0sbZka0s Z0lnZpop pZ0ZpZ0Z Z0Z0O0Z0 0o0M0Z0Z Z0M0LBZ0 POPZ0ZPO Z0JRS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3702

0ZrZka0s Z0l0Z0op pZbopm0Z ZpZ0Z0A0 0Z0ZPZ0Z Z0M0Z0Z0 POPZ0ZPO ZKZRLBZR a

c

rZ0Zka0s ZbZnZpo0 pl0opm0o ZpZ0Z0Z0 0Z0MPZ0A ZBM0Z0Z0 POPZ0OPO S0ZQS0J0 a

3699 8

b

3701

rZ0lkZ0s ZbZnapop pZ0opm0Z Z0Z0Z0A0 0o0MPO0Z Z0MBZ0Z0 POPL0ZPO Z0JRS0Z0 a

0Zrs0ZkZ ZbZ0apop pl0opm0Z mpZ0Z0Z0 0Z0MPO0Z OPM0ZBL0 0APZ0ZPO S0ZRZ0ZK a

3698 8

Sicilian piece sacrifice on d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZnskZ ZqZbapop pZnopZ0A ZpZ0Z0Z0 0Z0MPZ0Z ZBM0Z0L0 POPZ0OPO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3703 8 7 6 5 4 3 2 1

3706

0ZrZ0s0j ZqZ0apop 0Zbo0Z0Z ZpZ0o0Z0 0O0APS0Z Z0MBZ0ZQ 0ZPZ0ZPO Z0ZRZ0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3708

rm0Zka0s Zbl0ZpZp pZ0opo0Z ZpZ0Z0Z0 0Z0MPZ0Z Z0MBZ0Z0 POPZ0OPO S0ZQS0J0 a

c

0Zrs0ZkZ Z0l0apop pobopm0Z Z0Z0Z0Z0 0ZPZPA0Z ZPM0ZPZ0 PZ0LBZPO Z0SRZ0J0 a

3705 8

b

3707

rZbZka0s Z0l0ZpZp pZ0opO0Z Z0m0Z0ZQ 0o0MPZ0Z Z0M0Z0Z0 POPZ0Z0O Z0JRZBZR a

0Z0s0Z0j ZqZrapop pZbopm0Z ZpZ0Z0Z0 0Z0APO0Z O0MRZBL0 0OPZ0ZPO Z0ZRZ0ZK a

3704 8

Sicilian piece sacrifice on d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0Z0Z ZpZkaRZ0 0ZnopZQZ ZpZ0Z0Z0 0Z0ZPZ0Z Z0M0Z0A0 POPZ0ZPO Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3709 8 7 6 5 4 3 2 1

3712

rZ0ZkZ0s ZbZnapop pZ0opm0Z l0Z0Z0A0 0o0MPZ0Z ZBM0ZPZ0 POPL0ZPO ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3714

rZ0ZkZ0s ZbZnapop pZ0opZ0Z Z0Z0Z0O0 0l0MPO0Z Z0M0ZQZB 0OPZ0Z0O Z0JRS0Z0 a

c

rZ0ZkZ0s ZbZ0apZp pZ0opo0Z l0m0Z0Z0 0o0MPO0Z ZBM0Z0Z0 POPL0ZPO ZKZRS0Z0 a

3711 8

b

3713

0jbZ0Z0s ZpZ0apZ0 plnopo0Z Z0Z0Z0Z0 0Z0ZPOro ONMRZ0Z0 0OPZ0ZPO ZKZRLBZ0 a

rZ0Zka0s ZblnZpop pZ0opm0Z Z0Z0Z0A0 0o0MPZ0Z Z0M0Z0OB POPZ0O0O S0ZQS0J0 a

3710 8

Sicilian piece sacrifice on d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zka0s ZqZ0Zpop pZbopm0Z ZpZ0Z0Z0 0Z0ZPA0Z O0M0Z0O0 0OPZ0OBO S0ZQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3715 8 7 6 5 4 3 2 1

3718

rm0Zka0s Zbl0Zpop pZ0opm0Z Z0Z0Z0Z0 pZ0MPZ0Z Z0M0Z0O0 0OPZ0OBO S0AQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3720

0Z0s0skZ oqZnapop 0obopZ0Z Z0Z0Z0Z0 0Z0APO0Z Z0MBZ0ZQ POPZ0ZPO Z0Z0SRZK a

c

rZ0Zka0s ZplbZpop pZnopm0Z Z0Z0Z0Z0 0Z0MPZ0Z Z0M0Z0O0 POPZ0OBO S0AQS0J0 a

3717 8

b

3719

rZbZ0Z0s Z0lnjpop pZ0opm0Z ZpZ0Z0A0 0Z0ZPZ0Z ZBM0Z0Z0 POPL0OPO S0Z0ZRJ0 a

rZ0Zka0s ZbZnZpop pl0opm0Z Z0Z0Z0A0 Po0MPZ0Z ZBM0Z0Z0 0OPZ0OPO S0ZQS0J0 a

3716 8

Sicilian piece sacrifice on d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0Zka0s Zbl0Zpop pZ0opm0Z Z0Z0Z0Z0 Po0MPZ0Z Z0M0Z0O0 0OPZ0OBO S0AQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3721 8 7 6 5 4 3 2 1

3724

0ZbZka0s ZqZ0ZpZp 0Z0opO0Z o0m0Z0Z0 0s0MPZ0Z ZPM0ZQZB 0ZPZ0Z0O Z0JRZ0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3726

0ZrZkZ0s Z0l0apo0 0Zbopm0Z opZ0Z0Z0 0Z0ZPA0o O0MRZ0O0 0OPZQOBO Z0Z0S0J0 a

c

0Z0s0s0j ZblnZpZp po0opapZ Z0Z0Z0Z0 0ZPZPOQZ ZPM0Z0ZR PA0Z0ZPO ZBZ0ZRZK a

3723 8

b

3725

rZ0ZrZkZ Z0lba0op pZnopZpZ Z0m0ZPZ0 0o0MPZ0Z ZBM0A0Z0 POPZQZ0O ZKZRZ0S0 a

rZ0Zks0Z ZblnapL0 pZ0opo0o ZpZ0Z0Z0 0Z0MPO0Z Z0MBZ0Z0 POPZ0ZPO Z0JRS0Z0 a

3722 8

Sicilian piece sacrifice on d5

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrakZ Z0l0ZpZ0 pZnopZpZ ZpZ0mPO0 0Z0ZPM0Z Z0M0Z0Z0 POPZ0ZBZ S0AQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3727 8 7 6 5 4 3 2 1

3730

0Zrl0skZ ZpZnapop pZ0o0m0Z O0Z0oPZ0 0Z0ZPZ0Z ZNM0A0Z0 0OPZQZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3732

0ZrZ0Z0Z Z0l0opj0 0o0obZpZ Z0Z0Z0Zn pZrZPO0O Z0M0L0Z0 POPM0Z0Z ZKZRZ0S0 a

c

0Zrlka0s ZbZnZpZ0 pZ0opm0o ZpZ0Z0o0 0Z0MPZ0Z ZBM0Z0A0 POPZQOPO Z0JRS0Z0 a

3729 8

b

3731

0Zrl0skZ opZbopap 0Z0o0mpZ Z0Z0m0Z0 0Z0MPZ0Z ZBM0A0ZP POPZQOPZ S0Z0ZRJ0 a

0Zrl0skZ o0Zbapop 0Z0o0m0Z mBZ0oPZ0 0Z0ZPZ0Z ZNM0A0Z0 POPZQZPO Z0JRZ0ZR a

3728 8

Sicilian exchange sacrifice on c3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZnZkZ o0Z0Zpa0 qZ0obZpZ ZpZ0o0O0 0ZrZPZ0Z ZNM0APZ0 POPL0Z0S ZKZRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3733 8 7 6 5 4 3 2 1

3736

rZrZ0ZkZ o0ZbopZp 0Z0o0mpL lpZ0m0Z0 0Z0MPZ0O ZBM0ZPZ0 POPZ0ZPZ ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3738

0Zrl0skZ Z0Zbopap pZ0o0mpZ ZpZ0Z0Z0 0Z0ZPO0Z ONM0AQZP 0OPZ0ZPZ Z0ZRZRJ0 a

c

0ZrZ0akZ Z0Z0Zpo0 QZ0o0m0o Z0Z0oPZ0 0l0ZPZ0Z ZNM0Z0Z0 0OPZ0ZPO S0Z0Z0ZK a

3735 8

b

3737

rl0Z0ZkZ Z0Zbo0ap 0Z0o0mpZ ZpZ0Z0Z0 pZrMPZPZ O0M0APZ0 0OPZ0Z0L Z0JRZ0ZR a

0ZrZ0ZkZ Z0Z0apo0 0Z0o0m0o lpsBoPZ0 pZ0ZPZPZ Z0MQZ0ZP POPZ0ZRZ ZKZ0Z0S0 a

3734 8

Sicilian exchange sacrifice on c3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZqZ0Z ZbskaRZQ pA0opZ0Z ZpZ0Z0s0 0Z0ZPZ0Z O0M0Z0Z0 0OPZ0Z0J S0Z0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3739 8 7 6 5 4 3 2 1

3742

0ZrZkZ0s ZpZ0apo0 pZ0obm0o Z0Z0o0Z0 0Z0ZPZPO O0M0APZ0 0OPZBZ0Z Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3744

0Zrlka0s ZbZnZpop po0opm0Z Z0Z0Z0Z0 PZ0MPO0Z Z0M0ABZ0 0OPZ0ZPO S0ZQZRJ0 a

c

0Zrl0skZ ZbZ0apZp pZ0o0mpZ ZpZ0oPZ0 0Z0ZPZ0Z O0MBA0L0 0OPZ0ZPO S0Z0ZRJ0 a

3741 8

b

3743

0ZrZkZbZ opZ0oqZ0 0Z0o0ZpL Z0s0Z0Z0 0Z0ZPZPZ Z0MNZPZ0 POPZ0Z0Z Z0J0Z0ZR a

rZrl0ZkZ ZbZnapop po0o0m0Z Z0Z0o0A0 PZ0ZPZ0Z ZBM0Z0Z0 0OPMQOPO S0ZRZ0J0 a

3740 8

Sicilian exchange sacrifice on c3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZkZ0a ZbZnlpZ0 pm0opZpZ ZpZ0Z0O0 0Z0MPOQZ O0M0A0Z0 0OPZ0Z0Z Z0JRZBZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3745 8 7 6 5 4 3 2 1

3748

rZrZ0Z0Z ZpZ0jpop pZ0abm0Z l0Z0o0Z0 0Z0ZPZPZ ZBM0A0L0 POPZ0Z0O ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3750

0ZrlrZkZ ZbZnapop pZ0o0m0Z ZpZ0o0Z0 0Z0ZPO0Z ONM0ZBL0 0OPZ0ZPO S0A0ZRZK a

c

0Zrl0skZ ZpZbapop pZ0opm0Z Z0Z0Z0Z0 Pm0MPO0Z Z0M0A0L0 0OPZBZPO S0Z0ZRZK a

3747 8

b

3749

0ZrZ0ZkZ opZbopa0 qZ0o0mpZ Z0Z0Z0Z0 0ZrZPZPZ ZNM0APZ0 POPZ0Z0L Z0JRZ0ZR a

0Z0s0ZkZ Zbl0Zpop poro0a0Z Z0Z0o0Z0 Pm0ZPZBZ Z0MNZ0Z0 0OPZQOPO Z0ZRZRZK a

3746 8

Sicilian exchange sacrifice on c3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ ZbZnapop pZ0o0m0Z ZpZ0oPA0 0Z0ZPZ0Z O0M0Z0M0 BOPZ0ZPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3751 8 7 6 5 4 3 2 1

3754

0Zra0Z0Z ZqZ0Zpj0 0Zro0mpZ o0Z0o0Z0 RZ0ZPZ0Z ZNM0Z0Z0 ROPZ0ZPO Z0Z0ZQZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3756

qZ0ZkZ0s ZbZnapop po0opm0Z Z0Z0Z0Z0 PZrZPO0Z Z0M0ABZ0 0OPM0ZPO S0Z0LRJ0 a

c

0ZrZ0skZ ZqZ0apop po0obm0Z Z0Z0o0Z0 Pm0ZPZ0Z Z0M0A0OP 0OPZQOBZ M0SRZ0J0 a

3753 8

b

3755

0ZrZ0akZ opZnZpop 0l0o0m0Z Z0Z0sPZ0 0Z0ZPZ0Z Z0M0AQZ0 POPZBZ0O Z0JRZ0S0 a

0ZrZ0ZkZ ZpZ0apop plrobZPZ Z0Z0o0ZP 0Z0ZPZ0Z ZNM0ZPZ0 POPL0Z0S ZKZRZ0Z0 a

3752 8

Sicilian exchange sacrifice on c3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrlka0s ZpZbZpop pZ0opm0Z m0Z0Z0Z0 0Z0MPZ0Z Z0MBA0Z0 POPZQOPO Z0JRZ0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3757 8 7 6 5 4 3 2 1

3760

0Zrl0skZ ZbZnapop pZ0opm0Z ZpZ0Z0Z0 0Z0MPOPZ O0MBAQZ0 0OPZ0Z0O Z0Z0SRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3762

0Zrlka0s ZbZnZpop pZ0opm0Z ZpZ0Z0Z0 0Z0MPO0Z O0M0ABZ0 0OPZ0ZPO S0ZQZRJ0 a

c

0Z0l0skZ Z0ZbZpZ0 0Z0o0ZPZ Zpspm0aP pZ0MPZ0Z Z0M0ZPZ0 POPZ0ZQZ ZKZRZ0ZR a

3759 8

b

3761

0Z0Z0skZ Z0l0opap 0Z0obmpZ ZRs0Z0Z0 0Z0ZPZPZ Z0MQZ0ZP 0OPZ0OBJ Z0A0Z0ZR a

0ZrZ0skZ opZbopa0 0Z0o0mpZ l0Z0m0ZP 0Z0MPZpZ ZBM0APZ0 POPL0Z0Z Z0J0Z0SR a

3758 8

Sicilian exchange sacrifice on c3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrs0Z0Z ZpZ0apjp pZ0onmpZ Z0Z0Z0Z0 Pl0ZPZ0Z Z0M0APZ0 0OPS0Z0O Z0LBZ0SK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3763 8 7 6 5 4 3 2 1

3766

0Z0l0skZ Z0Z0opap pZro0mpZ ZpZ0mPZ0 0Z0SPZPZ ZPM0A0Z0 0OPZBZ0O Z0ZQZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3768

0Zrl0skZ opZbopa0 0Z0o0mpZ Z0Z0Z0ZP 0Z0ZPZ0Z ZPM0ANZ0 0OPZQZ0Z Z0JRZ0ZR a

c

0Zrl0skZ opZbopap 0Z0o0mpZ Z0Z0m0Z0 0Z0MPZ0Z ZBM0A0ZP POPZQOPZ S0Z0S0J0 a

3765 8

b

3767

0Zrlka0s ZbZnZpop pm0opZ0Z ZpZ0Z0Z0 0Z0MPZPO Z0MBAPZ0 POPZ0L0Z Z0JRZ0ZR a

0ZqZrZka opZbopZp 0Z0o0mpZ Z0Z0Z0A0 0ZrZPZPS ZNM0ZPZ0 POPL0Z0Z Z0JRZ0Z0 a

3764 8

Sicilian exchange sacrifice on c3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zrl0skZ opZnapo0 PZ0obm0o Z0Z0o0Z0 0Z0ZPZ0Z Z0M0ZNZP 0OPZ0OPZ S0AQSBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3769 8 7 6 5 4 3 2 1

3772

0jrZrZ0Z ZbZnZpZp pl0o0ZpZ ZpZ0oPL0 0Z0ZPZ0O Z0MBZ0O0 POPZ0Z0Z ZKZRZRZ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3774

0ZrZqskZ ZbZ0a0Zp pZ0o0o0Z Z0Z0oPo0 0Z0ZPZQZ ZPM0A0ZR 0OPS0Z0O Z0Z0Z0J0 a

c

0Z0Z0skZ opZ0Zpap 0Z0MpZpZ l0Z0Z0Z0 0ZrZPZ0Z Z0M0L0Z0 POPZ0Z0Z ZKZRZ0ZR a

3771 8

b

3773

0ZrZrZkZ ZpZ0Zpa0 pZ0obZpZ l0Z0m0O0 0Z0ZPA0S Z0M0Z0L0 POPZBZ0Z Z0J0Z0ZR a

0ZqZkZ0s ZbZ0a0Z0 pZ0o0o0Z ZpZ0oRo0 0ZrZPZ0Z O0MQZ0AP 0OPZRZPZ ZKZ0Z0Z0 a

3770 8

Sicilian exchange sacrifice on c3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0skZ ZpZbapo0 pZ0opm0o l0Z0ZPZ0 PZ0MPZ0Z Z0M0L0ZP BOPZ0ZPZ S0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3775 8 7 6 5 4 3 2 1

3778

0Zrl0skZ opZbopap 0Z0o0mpZ Z0Z0mPZ0 0Z0ZPZPZ Z0M0A0Z0 POPMBZ0O S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3780

0Zrl0skZ obZ0apop 0o0opm0Z m0Z0Z0O0 0Z0MPO0Z ZBM0AQZ0 POPZ0Z0O S0Z0ZRJ0 a

c

0Zrl0skZ ZpZ0opap pZ0o0mpZ m0Z0ZPA0 PZ0ZPZ0Z ZPM0Z0Z0 0O0ZBZPO S0ZQZRZK a

3777 8

b

3779

0Zrl0skZ ZbZnopap pZ0o0mpZ ZpZ0Z0Z0 0Z0ZPZPO ZNM0APZ0 POPL0Z0Z ZKZRZBZR a

0Z0ZrZkZ ZbsnapZp pZ0ZqmpZ ZpZ0o0A0 0Z0ZPZ0M O0MBZQZP 0OPS0ZPZ Z0Z0ZRZK a

3776 8

Sicilian exchange sacrifice on c3

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZ0s0j ZbZ0apo0 pZ0o0m0o lpZ0oPZ0 0Z0ZPZ0Z O0MBZ0ZP 0OPS0APZ Z0ZRL0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3781 8 7 6 5 4 3 2 1

3784

rZ0ZkZ0s ZplbZpZ0 pZnopa0o Z0Z0Z0Z0 0Z0MPZ0Z Z0M0Z0Z0 POPLBO0Z Z0JRZ0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3786

0s0ZkZ0s Zbl0Zpo0 pm0ZpZ0o ZpZ0O0a0 0Z0M0Z0Z Z0M0Z0L0 POPZ0ZPO ZKZRZBS0 a

c

rm0lka0s ZbZnZpop pZ0ZpZ0Z Z0Z0Z0O0 0o0M0M0Z Z0Z0APZ0 POPL0Z0O S0Z0JBZR a

3783 8

b

3785

rZbZkZ0s Zpl0Zpo0 pm0opa0o Z0Z0Z0Z0 0Z0MPO0Z ZBM0Z0Z0 POPZQZPO Z0JRZ0ZR a

0Zks0a0s ZbZnZpZ0 pZ0Z0Z0o l0ZpoPOn 0o0M0Z0O Z0Z0A0ZB POPLNZ0Z ZKZRZ0ZR a

3782 8

Other Sicilian piece sacrifices

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s ZqZ0mpo0 pZ0apZ0Z ZpZ0Z0Ap 0Z0M0Z0L Z0Z0Z0O0 POPZ0O0O S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3787 8 7 6 5 4 3 2 1

3790

rZ0ZkZ0s ZbZna0Zp pZ0opo0Z l0Z0Z0A0 No0Z0O0Z Z0ZBZ0Z0 POPL0ZPO Z0JRS0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3792

rm0Z0s0j Z0l0apop 0Z0opm0Z obZ0Z0A0 0o0ZPM0L ZBZ0ZNZ0 POPZ0OPO Z0ZRZRJ0 a

c

rZbZrZkZ ZplnapZp pZnopZpZ Z0Z0Z0O0 0Z0MPOBZ Z0M0A0Z0 POPZ0Z0O S0ZQZRJ0 a

3789 8

b

3791

rm0lka0s ZbZ0Zpop pZ0o0Z0Z Z0Z0oPZ0 No0MnZ0Z Z0ZBA0Z0 POPZ0ZPO S0ZQZRJ0 a

rZblka0s ZpZnZpo0 pZnopZ0o Z0Z0Z0O0 0Z0MPO0Z Z0M0A0Z0 POPZ0Z0O S0ZQJBZR a

3788 8

Other Sicilian piece sacrifices

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZbZ0skZ Z0lnapo0 pZ0opZpZ Z0Z0Z0Z0 0s0MPO0O Z0M0ZQZB 0OPZ0Z0Z Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3793 8 7 6 5 4 3 2 1

3796

rZqZka0s ZbZnZpop pZ0opm0Z ZpZBZ0A0 0Z0MPZ0Z Z0M0Z0Z0 POPZQOPO Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3798

rZ0ZkZ0s Zblnapo0 pZ0opm0o ZpZ0Z0Z0 0Z0MPO0A Z0MQZBZ0 POPZ0ZPO Z0JRZ0ZR a

c

rm0lkZ0s ZbZ0apop pm0opZ0Z ZpZ0Z0O0 0Z0MPZ0O O0M0A0Z0 0OPL0O0Z S0Z0JBZR a

3795 8

b

3797

rZblka0Z Z0ZnZpo0 pZ0opO0Z ZpZ0Z0Z0 0Z0MPZ0Z Z0Z0Z0Zr POPZBA0O S0ZQJ0ZR a

rZ0ZkZ0s Z0lbapop pZ0opm0Z m0Z0Z0Z0 No0MPZPZ Z0ZBA0Z0 POPZQO0O Z0JRZ0S0 a

3794 8

Other Sicilian piece sacrifices

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0sbZkZ0s Z0lnapop pZ0opZ0Z ZpZ0Z0O0 0Z0MPZ0Z ZPM0A0Z0 0OPZQO0O Z0JRZ0S0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3799 8 7 6 5 4 3 2 1

3802

rZ0lkZ0s ZbZ0apo0 po0opm0o Z0Z0Z0Z0 0Z0MPO0Z ZBMQZ0Z0 POPZ0ZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3804

rZ0lkans ZbZnZpop pZ0opZ0Z ZpZ0Z0Z0 0Z0MPZ0Z ZBM0Z0Z0 POPZ0OPO S0AQZRJ0 a

c

0ZrlkZ0s ZpZbZpap pZ0opo0Z Z0Z0Z0ZQ 0ZnMPO0Z ZBM0Z0Z0 POPZ0ZPO Z0JRS0Z0 a

3801 8

b

3803

0sbZkZrZ Z0lnapo0 pZ0opm0o ZpZ0Z0Z0 0Z0MPO0A Z0M0Z0L0 POPZBZPO Z0JRZRZ0 a

rm0lkZ0s ZbZ0apop pZ0opm0Z Z0Z0Z0A0 No0MPZ0Z ZBZ0ZQZ0 POPZ0OPO S0Z0J0ZR a

3800 8

Other Sicilian piece sacrifices

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0skZ0s ZplbapZ0 pZ0opm0o Z0Z0Z0o0 0Z0MPOPZ ZBM0Z0Z0 POPL0Z0O ZKZRS0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3805 8 7 6 5 4 3 2 1

3808

rZbZkZ0s Z0l0apop pZ0opZ0Z Zpm0Z0O0 0Z0MPZ0Z ZPM0A0Z0 0OPZQO0O ZKZRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3810

rZbZka0s ZpZ0ZpZp pZ0opo0Z Z0l0Z0ZQ 0Z0MPZ0Z Z0M0Z0Z0 POPZ0OPO S0Z0S0J0 a

c

rZbZnskZ ZqZ0apop pZ0opZ0A Zpm0Z0Z0 0Z0MPZ0Z OBM0Z0L0 0OPZ0OPO S0Z0S0J0 a

3807 8

b

3809

rZ0sbZkZ o0l0apop 0Z0opm0Z ZpZ0Z0A0 0Z0MPZ0Z Z0M0Z0S0 POPL0OPO Z0JRZ0Z0 a

0Z0ZkZrZ Z0ZbapZp nl0opo0Z o0s0Z0ZN 0o0MPOPZ ZPZ0SBZ0 PZPL0Z0O ZKZRZ0Z0 a

3806 8

Other Sicilian piece sacrifices

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zka0s ZbZnZpo0 pZ0opZ0Z lpm0Z0A0 0Z0MPZ0O O0M0Z0Z0 0OPL0OBZ Z0JRS0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3811 8 7 6 5 4 3 2 1

3814

rZ0Zka0s Z0lbZpop pm0opZ0Z ZpZ0Z0O0 0Z0MPO0Z Z0M0Z0Z0 POPL0Z0O ZKZRS0A0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3816

rZrZ0j0Z opZbZpaR 0Z0opZpZ Z0m0Z0O0 0Z0MPZ0Z ZBZ0APZ0 POPZ0Z0Z ZKZ0Z0ZR a

c

rmbZkZ0s ZqZ0apop pZ0opm0Z Z0Z0Z0A0 0o0MPZ0Z ZBM0ZQZ0 POPZ0OPO Z0JRS0Z0 a

3813 8

b

3815

0sbZkZ0s Z0lnapop pZ0opZ0Z ZpZ0Z0O0 0ZnMPZ0Z O0MBA0Z0 0OPZQO0O Z0JRS0Z0 a

rZ0lkZ0s ZpZbapo0 pZ0opZnZ Z0Z0m0O0 0Z0MPZ0Z ZBM0A0L0 POPZ0Z0O Z0JRZRZ0 a

3812 8

Other Sicilian piece sacrifices

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZblka0s ZpZ0ZpZ0 pZ0opmno Z0Z0Z0o0 0Z0MPZPZ Z0M0A0ZP POPZQOBZ Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3817 8 7 6 5 4 3 2 1

3820

0Zks0Z0s Zplbapo0 pZ0opZ0Z Z0Z0m0On 0Z0MPZ0Z Z0M0APZ0 POPLBZ0Z Z0JRZ0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3822

0Zks0Z0s Zblnapop pZ0opZ0Z mpZ0Z0O0 0Z0MPO0Z Z0MBA0ZQ POPZ0Z0O ZKZRZ0ZR a

c

rm0ZkZ0s Zbl0mpop pZ0opZ0Z ZpZ0Z0Z0 0Z0MPZ0Z Z0MBZ0Z0 POPZ0OPO S0ZQS0J0 a

3819 8

b

3821

rZbZkZ0s Zpl0apop pZ0opm0Z Z0Z0Z0A0 0Z0MPZ0Z Z0M0Z0Z0 POPL0OPO S0Z0S0J0 a

0ZrZkZ0s Z0lbapZ0 pZnopZpZ ZpZ0Z0An 0Z0ZPZ0O ONM0Z0Z0 0OPLBORZ ZKZRZ0Z0 a

3818 8

Other Sicilian piece sacrifices

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0ZkZns Zbl0Zpa0 pZ0opZ0o ZpZ0Z0o0 0Z0MPZ0Z Z0MBZ0A0 POPZ0OPO S0ZQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3823 8 7 6 5 4 3 2 1

3826

rZbZkZ0s Z0l0Zpop pZ0opZ0Z Zpm0ZPa0 0Z0MPZ0Z Z0M0ZQZ0 POPZ0Z0O ZKZRZBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3828

0Zks0Z0s Zblnapop pZ0opm0Z ZpZ0Z0A0 0Z0MPO0Z Z0MBZ0L0 POPZ0ZPO Z0JRS0Z0 a

c

rZ0Zka0s ZblnZpop pZ0opm0Z ZpZ0Z0Z0 0Z0MPA0Z Z0M0ZBZ0 POPZ0OPO S0ZQS0J0 a

3825 8

b

3827

rZbZka0s Z0l0Zpop pZ0opO0Z Zpm0Z0O0 0Z0MPZ0Z Z0M0ZQZ0 POPZ0Z0O Z0JRZBZR a

rmbZkZ0s Z0l0apop pm0opZ0Z ZpZ0Z0O0 0Z0MPO0Z O0M0A0Z0 0OPZBZ0O S0ZQJ0ZR a

3824 8

Other Sicilian piece sacrifices

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZkZ0s Z0l0Zpo0 pZ0opa0o Zpm0Z0Z0 0Z0MPO0Z ZBM0Z0Z0 POPZQZPO ZKZRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3829 8 7 6 5 4 3 2 1

3832

rZbZka0s ZpZ0Z0op pZ0opm0Z Z0Z0Z0Z0 0ZqMPZ0Z Z0M0A0Z0 POPZ0ZPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3834

rZbZkZ0s Z0lpZpo0 pZ0ZpZ0Z Zpa0O0Zp 0Z0Z0OnZ Z0MQZ0Z0 POPZBZPO S0A0ZRZK a

c

rZ0ZrZkZ Z0l0Zpop pZ0Zba0Z ZpZ0o0Z0 0Z0ZPZ0L O0MBZ0Z0 0OPZ0ZPO S0Z0ZRZK a

3831 8

b

3833

rZ0sbZkZ Z0l0Zpop pZ0o0a0Z ZpZPm0Z0 PZ0ABZ0Z ZNZ0Z0Z0 0OPZQZPO S0Z0ZRZK a

0ZrZ0skZ o0l0Zpop 0o0o0a0Z Z0ZBZ0Zb 0Z0ZPZ0Z ZQZ0A0O0 POPZ0S0O Z0J0ZRZ0 a

3830 8

Other Sicilian piece sacrifices

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ ZpZ0Zpop pZ0S0m0Z Z0Z0o0Z0 0ZqZPZ0Z ZNM0L0Z0 PO0Z0OPO S0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3835 8 7 6 5 4 3 2 1

3838

0Z0Z0skZ o0o0Zpop 0ZpZ0Z0Z Z0Z0Z0Z0 0Z0ZqZ0Z Z0O0Z0Z0 PO0O0ZQZ SNA0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3840

rZblnskZ o0o0apop 0ZpZ0Z0Z Z0ZpO0Z0 0Z0Z0O0Z ZPM0Z0Z0 PZPZBZPO S0AQZRJ0 a

c

0sbZnskZ ZpZnZ0Zp pZ0o0Z0Z O0oPZpZ0 0ZNZpO0Z Z0M0Z0Z0 0OPZBZPO S0Z0ZRJ0 a

3837 8

b

3839

rm0l0skZ ZpZ0apop 0Z0o0m0Z o0ZPo0Z0 0ZPZ0Z0Z ZNZ0ABZ0 PO0Z0OPO S0ZQZRJ0 a

rZbZ0j0Z o0Z0lpa0 0Z0Z0Z0s Z0opOpZp 0Z0Z0ZpZ Z0Z0L0ZP POPZNOPA S0Z0S0J0 a

3836 8

Blockade

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srZkZ ZplnZpZp pZ0a0opZ Z0o0Z0Z0 0Z0O0Z0O Z0OQANO0 PO0Z0O0Z ZKZRS0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3841 8 7 6 5 4 3 2 1

3844

rZ0lrZkZ o0Z0Z0ap 0o0Z0ZpZ Z0oPm0Z0 0Z0ZPZ0Z Z0Z0A0Z0 PZ0ZQMPO Z0S0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3846

0ZrlrZkZ ZpZ0Zpop panZ0Z0Z Z0Z0Z0Z0 0ZNo0M0Z O0Z0ZQO0 0O0ZPO0O Z0S0S0J0 a

c

0ZrZ0s0Z Z0Znlpjp pZnZ0ZpZ ZpZ0o0Z0 0Z0Z0Z0Z Z0ZPMBO0 PO0L0O0O S0S0Z0J0 a

3843 8

b

3845

0s0Z0skZ o0Zblpop 0ZpZ0Z0Z ZnZpZ0Z0 NZ0O0Z0Z ZPZ0O0O0 0Z0Z0OBO Z0SQZRJ0 a

0ZrZrZ0Z ZpZbZkZp 0a0ZpmpZ o0ZpZ0Z0 0Z0M0APZ Z0O0ZPZ0 PO0Z0ZPZ Z0JRSBZ0 a

3842 8

Blockade

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZnZ0s Z0Z0Z0j0 0o0l0opZ oPoPo0Zp 0ZPZPZ0O Z0Z0L0OB PZ0Z0S0Z Z0Z0ZKZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3847 8 7 6 5 4 3 2 1

3850

rZbl0skZ ZpZpapop pZ0ZpZ0Z Z0Z0m0Z0 0ZPZNZ0Z Z0Z0M0O0 PO0LPOBO S0Z0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3852

rmblnskZ opZ0Zpap 0Z0Z0ZpZ Z0oPo0Z0 0ZPZPZ0Z Z0M0ZNZ0 PO0ZBZPO S0AQZRJ0 a

c

rZblns0j opo0m0Z0 0Z0o0a0Z ZNZPZ0op 0OPZPo0Z Z0Z0ZPZ0 PA0ZBMKO ZRZQZRZ0 a

3849 8

b

3851

0Z0sqZkZ Z0Z0spop 0ZnZ0ZbZ opZ0O0Z0 0ZpO0LBZ O0O0S0Z0 0A0Z0ZPO Z0Z0S0J0 a

rmbl0skZ opZ0Z0ap 0Z0o0Z0Z Z0oPopZn 0ZPZ0Z0Z Z0MBAPZ0 POQZNZPO S0Z0J0ZR a

3848 8

Blockade

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opo0mpap 0Z0o0Z0Z Z0OPZ0o0 0O0ZPoBZ Z0M0Z0Z0 PZ0L0OPO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3853 8 7 6 5 4 3 2 1

3856

rZblnskZ Z0Z0mpap pZ0Z0ZpZ Z0M0o0Z0 NO0oPZ0Z A0Z0Z0Z0 PZ0ZBOPO ZRZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3858

rZbl0s0j o0Z0m0a0 0Z0o0m0o Z0oPZpZ0 0ZPZpO0A ZNM0Z0Z0 PZQZBZPO ZRZ0ZRJ0 a

c

rZ0l0skZ ZpZ0mpmp 0Z0o0ZpZ oPoPZ0Z0 0Z0ZPS0Z OPZ0Z0Z0 0Z0MBZPO S0ZQZ0J0 a

3855 8

b

3857

0sbl0skZ Z0Z0mpap pZpZ0mpZ Z0Z0o0A0 0OPoPZ0Z ONM0Z0Z0 0Z0ZBOPO S0ZQZRJ0 a

rZnl0s0j ZpZ0Z0a0 0ZpoPm0o Z0Z0ZpZ0 0OPZpOPZ Z0M0A0Z0 0ZQZBZ0O ZRZRZ0J0 a

3854 8

Blockade

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrZkZ ZpZ0ZpZp 0Zpo0lpZ o0m0a0Z0 0ZPZPZ0Z ZPM0L0Z0 PA0Z0OPO Z0ZRSBJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3859 8 7 6 5 4 3 2 1

3862

rZ0lnskZ Z0obZ0a0 0o0o0Z0o o0ZPZpZ0 0ZPZpO0Z ZPM0A0Z0 0OQZBZPO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3864

rZ0lnZkZ Z0obZra0 0o0Z0Zpo o0oPopZ0 0ZPZPZ0Z O0M0Z0Z0 0OQABOPO S0Z0ZRZK a

c

rZ0lkZ0s ZpZbapo0 pZnopm0o Z0Z0Z0Z0 0Z0ZPZPZ ZNM0Z0Z0 POPZQOBO S0A0ZRJ0 a

3861 8

b

3863

rZ0Z0skZ opZbl0a0 0Z0o0Z0o Z0oPo0o0 0ZPZ0Z0Z Z0M0Z0M0 PO0ZQOPO S0ZRZ0J0 a

rZbl0skZ opZ0mpa0 0Z0o0Zpm Z0oPZ0Zp 0ZPZPA0Z Z0M0Z0Z0 PONZBZPO S0ZQZRJ0 a

3860 8

Blockade

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0ZkZ0s Zplbapo0 pZnopm0o Z0Z0Z0Z0 PZ0ZPZPZ Z0M0Z0MP 0OPZ0OBZ S0AQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3865 8 7 6 5 4 3 2 1

3868

0Z0Zrj0Z Zpl0ZpZ0 rZ0mPZ0Z o0Z0o0Z0 PZ0Z0Z0L Z0ZRZ0Z0 0OPZ0OPO Z0ZRZ0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3870

0Z0l0Z0Z o0ZrSpjp 0o0Z0ZpZ Z0o0Z0Z0 0Z0o0Z0Z ZPZPZ0ZP PZPZQOPZ Z0Z0Z0J0 a

c

rZ0ZrZ0Z o0o0ZpZk 0Z0o0Zpo Z0o0Z0Z0 0ZPZ0m0Z Z0M0ZBZ0 PORZPO0l Z0ZRLKZ0 a

3867 8

b

3869

0Z0s0ZkZ ZpZ0Z0op 0ZpZ0Z0Z onO0ZbZ0 0ZKZ0M0O O0Z0ZPZ0 0Z0Z0APZ Z0Z0Z0ZR a

0Z0Z0L0Z Z0Z0ZpZk poBZbZpO Z0Z0O0J0 PZ0Z0Z0Z Z0Zns0Z0 0Z0s0Z0O Z0Z0Z0Z0 a

3866 8

Blockade

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZRZ0Z0Z Z0Z0ZkZp 0ZPZpZ0Z Z0ZbJpO0 0Z0ZpZ0Z Z0s0Z0Z0 0Z0Z0Z0Z ZRZ0Z0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3871 8 7 6 5 4 3 2 1

3874

0Z0Z0Z0Z Z0Z0Z0ap 0S0Z0ZpZ o0Z0o0Z0 ko0ZrZPs Z0ZRA0Z0 POPZKZ0Z Z0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3876

rZ0Znj0Z ZpZrZ0a0 0o0Z0ZPZ Z0ZnoNM0 0Z0Z0Z0Z Z0ZPZ0Z0 PO0Z0ZKZ S0A0Z0ZR a

c

rZ0ZBa0s oQZ0Z0Z0 0ZpZ0o0o j0Z0l0Z0 0Z0ZPZ0Z Z0M0A0Z0 PO0Z0ZPO Z0Z0Z0J0 a

3873 8

b

3875

rZbl0skZ opo0apZp 0ZnZ0Z0L Z0Z0Z0Z0 0ZBoNZ0Z Z0Z0Z0Z0 POPZ0OPO SNZ0ZRJ0 a

0j0A0Z0s ZpZ0LpZ0 0Z0ZbZpO o0Z0O0Z0 PZ0o0o0Z ZqZ0Z0Z0 0ZRZ0O0O Z0J0Z0Z0 a

3872 8

Blockade

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0MkZ ZpZ0opZp pZno0ZpZ Z0ZNZ0Z0 PZ0ZPOnZ Z0Z0Z0Z0 0aPJBlPO S0ZQZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3877 8 7 6 5 4 3 2 1

3880

rZ0Zrj0Z o0Z0SpZp 0lpZbL0Z Z0Z0Z0Z0 0o0O0Z0Z Z0Z0Z0S0 PO0Z0OPO Z0Z0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3882

rZ0ZrZ0j obZ0l0o0 0o0ZNm0o Z0a0Z0Z0 0ZBZ0Z0Z Z0O0ZPZ0 POQZ0ZPO Z0Z0SRZK a

c

0Z0ZrZkZ o0ZQZpop 0Z0Z0l0Z Z0Z0Z0Z0 0Z0Z0Z0Z Z0Z0Z0O0 PZ0ZrO0O Z0Z0ZRJR a

3879 8

b

3881

0Zrl0skZ ZbZnapo0 0o0Z0Z0o o0ZpMBZ0 0Z0o0M0Z Z0Z0O0Z0 POQZ0OPO Z0SRZ0J0 a

rZbZ0skZ o0o0Zpop 0ZBZ0Z0Z Z0Z0Z0Z0 0L0Z0Z0Z Z0ZqZNm0 0O0Z0OPO S0Z0Z0JR a

3878 8

Blockade

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZqZks o0ZbopZp 0Z0Z0ZpL ZpZ0o0On 0Z0Z0Z0Z ZBM0ZPZ0 POPZ0Z0Z Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3883 8 7 6 5 4 3 2 1

3886

0s0Z0skZ Z0obl0mp pZ0ZpZnZ ZpZPZ0ZQ 0ZPZ0ZNZ Z0ZBORZ0 0Z0Z0ZPO A0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3888

rZ0ZrZkZ opZblpa0 0Z0o0m0Z Z0oPm0op PZ0ZPZ0Z Z0M0ZPA0 0O0ZBZPO S0ZQSNJ0 a

c

rlrZ0ZkZ obZnapo0 0Z0Z0Z0o Z0opOBZ0 0o0Z0Z0Z Z0Z0ANZ0 PO0Z0OPO Z0SQS0J0 a

3885 8

b

3887

rZ0Z0skZ Zpl0m0o0 pZ0obO0Z Z0Z0ZpZQ 0Z0Z0O0Z Z0O0Z0ZR PZPA0ZPO S0Z0Z0ZK a

rZ0ZnZ0Z opZ0l0ok 0ZpZBmRo Z0Z0Z0Z0 0ZpZ0O0Z ZPZ0Z0ZP PA0Z0ZQJ Z0Z0Z0Z0 a

3884 8

Blockade

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ opZ0Zpop qZparm0Z Z0Z0Z0Z0 0O0ZPZ0Z O0O0ZQO0 0A0MRZ0O S0Z0Z0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3889 8 7 6 5 4 3 2 1

3892

rZbs0ZkZ ZpZ0Zpap pZnlpZpZ Z0Z0Z0M0 PZ0O0Z0Z Z0O0Z0Z0 0ZBZ0OPO S0AQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3894

rZ0l0skZ ZpZnapop 0Z0o0Z0Z o0ZPobZ0 PZ0Z0Z0Z ZNZ0A0Z0 0OPLBOPO S0Z0ZRJ0 a

c

rZbj0Z0s opZna0Zp 0ZpZ0opZ Z0Z0o0Z0 0ZPZ0Z0O Z0M0A0O0 PO0ZPO0Z Z0JRZBZR a

3891 8

b

3893

0Z0lrZkZ obZ0Zpap 0o0ZpZpA Z0ZnZ0Z0 0Z0OBZNZ O0Z0Z0Z0 0O0L0OPO Z0S0Z0J0 a

rZbl0skZ opZ0Zpa0 0Z0o0m0o ZBoPo0Z0 Pm0ZPZ0Z Z0M0ZPA0 0OPM0ZPZ S0ZQS0J0 a

3890 8

Weak square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

RZnZ0skZ Z0Z0Z0Zp 0Z0o0lbZ ZNoPopZn 0ZPZ0Z0Z Z0Z0ZPO0 0Z0LBM0O Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3895 8 7 6 5 4 3 2 1

3898

rZbZkZ0s Z0l0Zpop pZpZpm0Z ZpZ0Z0Z0 Na0ZPZ0Z Z0Z0A0Z0 POPZBOPO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3900

rZ0Z0skZ Z0Z0opZ0 0l0o0ZpZ mpoPZ0Z0 PZ0Z0Z0Z ZPZ0ZBO0 0L0ZPO0Z S0Z0ZRJ0 a

c

0Z0Zka0s spZ0Zpo0 pZbo0m0o Z0Z0o0Z0 0Z0ZPZ0Z Z0M0Z0A0 POPZBOPO Z0JRZ0ZR a

3897 8

b

3899

rZrZ0ZkZ oqZnapop 0o0Zpm0Z Z0Z0Z0Z0 0O0MPZ0Z O0Z0ZQO0 0A0M0OKO S0S0Z0Z0 a

0sbl0skZ o0onopap 0o0Z0ZpZ Z0Z0Z0Z0 0Z0O0ZnZ Z0ZNONO0 PO0ZQOBO S0A0ZRJ0 a

3896 8

Weak square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0L0Z0m0Z Z0ZqZko0 0ZbZpo0o opZpZ0ZN 0Z0O0MPZ Z0Z0O0ZP PO0Z0O0Z Z0Z0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3901 8 7 6 5 4 3 2 1

3904

rZbl0skZ Z0Z0mpop pZ0Z0Z0Z ZpZpZ0Z0 0Z0O0Z0Z Z0M0ZNZ0 PO0Z0OPO S0ZQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3906

rZblrmkZ opZ0Zpa0 0Z0o0m0o Z0oPo0o0 0ZPZPZ0Z O0M0ZNOP 0O0Z0O0Z S0AQSBJ0 a

c

qZ0Z0skZ Lbm0Zpa0 0ZpZnZpo Z0Z0o0Z0 0O0ZPZ0Z Z0M0A0ZP 0Z0M0OPZ Z0Z0SBJ0 a

3903 8

b

3905

0sbl0skZ Z0o0o0ap pZ0o0ZpZ mpZPm0Z0 0Z0M0Z0Z Z0M0Z0OP PO0Z0OBZ S0AQZRJ0 a

rZ0Z0skZ Z0l0a0op pm0o0Z0Z mpoPobZ0 0Z0ZNZ0Z Z0O0ZNZP POBZ0OPZ S0AQS0J0 a

3902 8

Weak square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0ZkZns opZqZ0Zp 0Z0o0ZpZ Z0oPobZ0 0ZPZ0Z0Z Z0OBZNZ0 PZ0Z0OPO S0AQJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3907 8 7 6 5 4 3 2 1

3910

0ZrZrZkZ o0Z0Zpap 0onoplpZ ZPo0Z0Z0 0ZPZ0O0Z O0ZPL0O0 0Z0ZNOBO ZRZ0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3912

0l0s0ZkZ opZ0Zpa0 0mpZ0mpZ M0Z0o0Z0 0OPZ0Z0o L0Z0Z0OP PA0ZPOBZ Z0Z0ZRJ0 a

c

0ZrZ0ZkZ o0l0spap Ro0ZnZpZ ZPo0o0Z0 QZPZ0Z0Z Z0O0Z0O0 0O0Z0OBO Z0A0S0J0 a

3909 8

b

3911

rZbZ0ZkZ opZnZpap 0Zps0ZpZ Z0Z0o0Z0 PZ0ZPZ0Z ZBM0A0Z0 0OPZ0OPO ZRZ0ZRJ0 a

rZbZkZ0s ZpZnZpZ0 pZ0o0Z0o O0ZqZ0o0 0O0ZpZ0Z Z0O0O0ZP 0Z0MNZPZ Z0S0LRJ0 a

3908 8

Weak square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0ZkZ o0o0Zrap 0Z0o0mnZ Z0ZPo0o0 PONZPo0Z A0M0ZPZ0 0Z0ZBZPO S0ZQZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3913 8 7 6 5 4 3 2 1

3916

rZ0ZnskZ Z0lbZpap 0o0o0ZpZ o0mPo0Z0 PZ0ZPZ0Z MPM0Z0ZP 0Z0Z0OPZ ZRAQSBJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3918

rZ0l0skZ opZbZpa0 0m0o0Z0o Z0ZPo0o0 0Z0ZPm0Z Z0M0M0A0 PO0ZBOPO S0ZQZRJ0 a

c

rZ0ZqskZ Zpo0Z0an nZ0o0Zpo o0ZPobZ0 0ZPZ0Z0A O0M0Z0Z0 0O0MBOPO S0ZQZRJ0 a

3915 8

b

3917

rZbl0skZ ZpZnZpa0 0Z0o0Zpo o0oPo0Z0 0ZPZPZ0Z ZQM0A0Z0 PO0ZBOPO S0Z0S0J0 a

rZ0Z0snZ ZpZ0lpak nZ0o0Zpo o0oPZ0Z0 0ZPZPA0Z Z0M0Z0ZR PO0LBZPO Z0Z0S0J0 a

3914 8

Weak square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ Z0Z0Zpap plpo0mpZ Z0Z0m0Z0 0OPZPZ0Z Z0M0ZPZ0 0Z0ABZPO S0ZQZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3919 8 7 6 5 4 3 2 1

3922

0s0Z0skZ Z0ZqZ0ap 0ZnobZ0Z opZNopZQ 0Z0Z0Z0Z Z0O0M0O0 PO0Z0OBO S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3924

0Zks0Z0s Z0lnapop pZbopZ0Z ZpZ0Z0O0 0Z0LPZ0O Z0M0APZ0 POPZ0Z0Z Z0JRZBZR a

c

0sqZrZkZ obZnapo0 0ono0Z0o ZBoNo0Z0 QOPZPZ0Z O0ZPANZ0 0S0Z0OPO Z0Z0ZRJ0 a

3921 8

b

3923

0Z0s0skZ Z0Z0Z0op pl0o0Z0a ZpZ0onZ0 0M0Z0o0O Z0OQZBZ0 PO0Z0OPZ Z0ZRJ0ZR a

0Zrl0skZ o0m0apop 0Z0Z0Z0Z A0opO0Z0 0Z0Z0Z0Z ZPZQZNO0 PZ0Z0OKO S0Z0S0Z0 a

3920 8

Weak square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zbs0skZ Zpl0apop pZ0opmnZ Z0Z0Z0A0 0ZPL0Z0Z ZNM0Z0O0 PO0ZPOBO Z0SRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3925 8 7 6 5 4 3 2 1

3928

0Z0s0Z0j ZpZ0lpob 0ZpZ0Z0o o0m0mPZ0 0Z0ZPZ0Z Z0M0A0OP POQZRZBJ Z0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3930

0Z0s0ZkZ opZ0spo0 0ZnZ0l0o Z0opZbZ0 0Z0O0Z0Z OQO0O0O0 0Z0M0OBO S0Z0ZRJ0 a

c

0Zks0Z0s opoqZ0o0 0Z0Zbo0Z Z0Z0Z0Zp 0Z0O0Z0O Z0O0A0L0 PZPZ0OPZ S0Z0ZRJ0 a

3927 8

b

3929

rZ0Z0skZ opZqZpap nZ0Z0mpZ Z0ZpoPZ0 0Z0ZPZ0Z Z0MPZ0OP PO0ZNZKZ S0AQZRZ0 a

kZrZ0a0Z oblrZpZ0 0o0ZpZpZ Z0onO0Ap PmNo0Z0O Z0ZPZNO0 0OPZQOBZ Z0S0S0J0 a

3926 8

Weak square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrmkZ opo0ZpZ0 0Z0Z0lnZ O0Z0o0o0 0Z0ZPZ0o Z0O0L0OP 0O0MBO0M S0ZRZ0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3931 8 7 6 5 4 3 2 1

3934

0ZqZ0skZ ZrZnZ0ap po0o0opZ Z0Z0oPZ0 0O0ZPZ0Z Z0M0A0ZP PZ0ZQZPZ Z0ZRZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3936

0mbZqskZ s0a0Z0op 0ZpZpZ0Z ZpOpMpZ0 pO0OnA0O O0Z0ZNO0 0Z0ZPOBZ S0ZQZRJ0 a

c

rZrZ0ZkZ Z0Z0opZp pZ0o0apZ ZqZPZ0Z0 0ONZ0Z0Z O0Z0Z0Z0 0Z0L0OPO Z0S0ZRJ0 a

3933 8

b

3935

rZ0Z0j0Z Zno0l0Z0 0o0Z0o0o o0ZPo0oP 0O0Z0Z0Z O0O0L0Z0 0ZBZ0OPZ Z0ZRZ0J0 a

rZ0Zkans Z0lbZpop pZ0o0Z0Z m0Z0oPZ0 Bo0MPZ0Z Z0M0A0Z0 POPZ0ZPO S0ZQZRJ0 a

3932 8

Weak square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s Zbl0apop pZpZ0m0Z Z0Z0oPZ0 0Z0oPZ0Z Z0MBZ0L0 POPZ0ZPO S0A0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3937 8 7 6 5 4 3 2 1

3940

0Z0Z0skZ ZpoqZ0op pZpa0ZnZ Z0Z0orZ0 0Z0Z0Z0Z Z0ZPA0ZP POPMQOPZ S0Z0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3942

rZrZnmkZ ZpZbZpl0 0Z0o0Z0S Z0ZPo0O0 0Z0ZPZ0Z oPM0Z0Z0 PZ0LBM0Z Z0Z0ZKS0 a

c

0Z0srZkZ ZblnZ0ap pZpZ0ZpZ Z0Z0opZn NoPZPZ0Z ZNZ0APO0 PO0ZBL0O ZKS0Z0ZR a

3939 8

b

3941

rZ0l0skZ Z0Z0ZpZ0 0Zpobm0o o0a0Z0o0 0ZPZPS0A O0MBZ0Z0 0O0L0ZPO Z0Z0ZRZK a

rZ0Z0skZ Z0Zbm0ap pZ0o0mpZ lpZPo0Z0 0Z0ZPZPZ Z0M0APZ0 PO0L0Z0Z ZKZRZBMR a

3938 8

Weak square

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Zka0s ZqZnZpop pZ0o0Z0Z O0ZPo0Z0 RoBZ0Z0Z ZNZ0ZPZ0 0OPZQZPO Z0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3943 8 7 6 5 4 3 2 1

3946

0Z0j0Z0Z ZRZ0Z0Zp 0Z0ZpZpZ M0Z0Z0O0 0ZPZ0l0a Z0Z0Z0Z0 PZ0sQZ0O Z0Z0Z0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3948

0j0Z0Z0Z o0Z0apZ0 QZpZpZpZ ZpZpOnZ0 0Z0Z0A0Z O0ZBZqZ0 KOPZ0O0Z Z0Z0Z0Z0 a

c

rZ0Z0Zrj opl0ZpZp 0Z0ZbZ0Z ZRZ0ZpZ0 0Z0Z0O0Z Z0Z0Z0MP PO0ZQZBJ Z0Z0Z0ZR a

3945 8

b

3947

0ZrZ0Z0Z o0Z0oNZk 0Z0oPZpo Z0Z0Z0Zq 0O0L0OnO Z0Z0Z0O0 PZ0Z0Z0Z Z0Z0S0J0 a

rZ0Z0ZrZ Z0l0ZpZk po0opO0o Z0Z0Z0ZQ bZ0ZPZ0Z Z0ZPS0Z0 0O0M0ZPO Z0Z0ZRZK a

3944 8

Perpetual check

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZrZkZ S0Z0Zpo0 0o0Z0Z0o Z0Z0M0Z0 0Z0Z0O0Z O0s0Z0mP 0Z0Z0ZKZ Z0Z0S0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3949 8 7 6 5 4 3 2 1

3952

rZ0ZkZ0Z ZbZ0Zplp pZ0ZpZrZ Z0o0Z0Z0 0Z0ZnA0Z oPZ0ZPO0 PZPZBZ0O S0L0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3954

0Z0Z0Z0j o0Z0Z0o0 0o0ZpZ0Z Z0Z0Z0Z0 0ZPZqO0Z O0Z0Z0ZP 0Z0orZPJ Z0ZQZRZ0 a

c

0Z0Z0akZ Z0Z0Z0Z0 0Z0Z0Z0o Z0ZpA0o0 0o0OpZPZ ZPm0Z0ZP 0Z0Z0OKZ sBZ0ZRZ0 a

3951 8

b

3953

rmqZ0skZ o0Z0Zpop 0o0Zpm0Z Z0Z0Z0Z0 0ZBO0Z0Z Z0O0ZQZ0 PZ0A0OPO S0ZRZ0J0 a

0Z0Z0Z0l Z0Z0okZr pZ0o0o0Z Z0Z0Z0Zr 0ZPAPOQZ ZPZ0Z0Z0 PZ0Z0ZRZ Z0Z0Z0J0 a

3950 8

Perpetual check

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0Z0Z0Z ZRZ0Z0Zp 0Z0o0Zpj O0aPZ0Z0 0Z0Z0o0Z Z0ZnZPlP 0Z0ZQZPZ Z0Z0ZBZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3955 8 7 6 5 4 3 2 1

3958

0Z0s0akZ Z0Z0Z0op 0Z0Z0o0Z Z0Z0Z0Z0 pZplQM0Z ZbZ0M0O0 0Z0Z0O0O Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3960

0s0Z0Z0s Z0Z0opj0 0ZnobmpZ lpZNZ0Zp 0Z0ZPZ0Z O0Z0APZ0 0L0ZBZPO ZNZ0ZRJ0 a

c

0Z0Z0skZ Z0Z0Z0Z0 0ZpZrZpZ Z0ZpZnZ0 RZqO0Z0O Z0Z0O0ZP 0S0Z0O0Z Z0ZQA0J0 a

3957 8

b

3959

0Z0Z0Zks opM0Z0op 0Z0Z0Z0Z Z0m0o0Z0 0Z0ZPZ0Z Z0Z0ZPZb POPJQaqO S0ANZ0Z0 a

0ZQZ0Z0Z o0o0ZkZ0 0Zpa0m0Z Z0Z0ZPo0 0Z0OpZ0l Z0O0ZpS0 PO0Z0O0O Z0Z0Z0SK a

3956 8

Perpetual check

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZrZkZ opZ0Zpap 0Z0ZqZpZ Z0ZnZ0Z0 0Z0S0O0Z Z0M0A0ZP POPZQZPO Z0J0S0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3961 8 7 6 5 4 3 2 1

3964

0ZQaqZkZ Z0Z0Z0o0 0o0Z0ZNo Z0Z0o0ZP 0Z0sPZ0Z Z0Z0Z0Z0 0Z0o0ZPJ Z0ZRZ0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3966

rZ0Z0Z0Z Z0m0a0Z0 0ZpZpl0j ZpOpZ0Zr pZ0O0OQZ O0ZBO0O0 0O0Z0A0Z Z0ZRZ0J0 a

c

0Zks0ZrZ o0o0ZpZp 0ZpZ0Z0Z Z0mbS0Z0 0Z0l0Z0Z Z0M0Z0Z0 POPZ0OPO S0Z0LBJ0 a

3963 8

b

3965

rZbZkZ0s ZRZ0Z0o0 pZnaNm0Z Z0Zpo0o0 qZ0Z0Z0Z Z0O0A0Z0 0Z0Z0OPO ZBZQZRJ0 a

0Z0l0skZ Z0ZPZ0Zp pZ0S0ZrZ ZpZ0ZNZ0 0Z0Z0L0Z Z0Z0ZPZ0 0ZpZPJ0O Z0Z0Z0Z0 a

3962 8

Perpetual check

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZqs0ZkZ opo0opZp 0m0Z0a0A Z0ZPZpZ0 0Z0Z0Z0Z Z0Z0L0Z0 PO0ZNO0O Z0ZRJ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3967 8 7 6 5 4 3 2 1

3970

0Z0Z0s0Z Z0l0Z0ok 0Z0ZQZ0o Z0S0Z0Z0 PO0Z0ZnZ M0m0Z0Z0 0Z0Z0ZPO Z0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3972

rZ0Z0j0s o0S0opZ0 0l0ZBapZ Z0Z0Z0Z0 0Z0ZPL0O Z0Z0Z0Z0 PZ0Z0O0O Z0A0Z0J0 a

c

0ZrZ0akZ opZ0ZpZ0 0Z0ZpOpZ Z0ZpO0L0 bZ0M0ZPZ Z0ZRZ0Z0 Pl0ZBZ0Z Z0s0ZRJ0 a

3969 8

b

3971

rZ0Z0Z0Z Z0Z0Zpj0 pS0Z0ZpZ O0o0Z0Zp qZPaPL0Z Z0Z0M0O0 0Z0Z0ZKO Z0Z0Z0Z0 a

ra0Z0Z0j ZbZNZ0o0 pZ0Z0m0o mpZ0Z0Z0 0Z0Z0Z0Z O0OQZ0Oq BO0A0O0O Z0Z0S0J0 a

3968 8

Perpetual check

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0skZ o0l0Zpo0 BonZbZ0o Z0Opa0Z0 0Z0Z0O0Z ONZ0O0M0 0OQZ0ZPO Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3973 8 7 6 5 4 3 2 1

3976

0Z0Z0skZ ZrO0Z0op pZ0Z0m0Z Z0ZPo0Z0 0O0ZPl0Z Z0L0Z0ZP PZ0Z0ZPZ S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3978

0Z0Z0srj Z0ZRZQap 0Z0Z0ZpZ Z0Z0Z0O0 0Z0Z0Z0Z ZPO0Z0Z0 qZ0Z0ZPZ Z0Z0ZRZK a

c

0Z0s0ZkZ Zpl0Z0Zp 0S0Z0ZpZ Z0O0Zpm0 PO0Z0M0Z Z0Z0ZPO0 0Z0S0LKO Z0Z0s0Z0 a

3975 8

b

3977

0ZRZ0Z0Z o0Z0l0jp 0Z0Z0ZpZ Z0ZpZ0Z0 bZ0O0ZpZ OrZ0Z0M0 0Z0Z0L0Z Z0ZKZ0ZR a

0Z0srZ0j Z0Z0m0ap 0ZqZ0ZpZ o0O0ZpZ0 0OBZNO0L O0Z0o0Z0 0Z0Z0ZPO S0A0Z0J0 a

3974 8

Perpetual check

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZbZrZkZ Z0l0Z0Zp po0Z0o0Z Z0ZpZ0oQ 0Z0Z0a0Z ZPZBs0O0 PAPZ0Z0O Z0ZKZRZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3979 8 7 6 5 4 3 2 1

3982

0ZqZ0Znj Z0Z0ZpZ0 0Z0ZpMpo o0Z0O0Z0 0o0Z0ZPL Z0ZBZ0ZR PO0J0ObO Z0s0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3984

rZbZ0skZ opZ0opap 0Z0l0mpZ Z0A0ZPZ0 0m0Z0ZPZ ZNM0Z0Z0 POPZBZ0O S0ZQJ0ZR a

c

0Z0Z0skZ o0lbZpZp 0Z0o0mpL Z0Z0Z0OP 0oroPZ0Z Z0Z0ZPZ0 POPZNZ0Z ZKZRZ0ZR a

3981 8

b

3983

0Z0Z0Z0j o0o0l0Zp 0a0oRZnL Z0Z0Z0oN 0Z0ZPZ0Z Z0o0Z0ZP Ps0Z0ZPJ Z0Z0Z0Z0 a

0Zks0ZrZ oplbmpZQ 0ZnZpZ0Z OBZpO0A0 0Z0Z0Z0Z O0o0ZNZ0 0ZPZ0OPO S0Z0ZRJ0 a

3980 8

Perpetual check

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0srZkZ Z0o0ZpZp 0Z0Z0ZpZ ZQZ0Z0Z0 0ZPZpO0Z ZPZ0Z0Z0 PZ0ZqZPO Z0Z0S0ZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3985 8 7 6 5 4 3 2 1

3988

0Z0l0Z0Z ZpZ0ZQak 0Z0o0ZpZ ZPZ0o0Zp 0ZNZPZ0Z Z0Z0Z0O0 0Z0Z0ZKO Z0Z0Z0Z0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3990

0L0Z0Z0Z Z0Z0Zrj0 0oPo0Zpo ZPZPoBZ0 0Z0m0a0l Z0Z0Z0M0 0Z0Z0OPO Z0Z0S0J0 a

c

0ZrZ0ZkZ ZqZ0Z0s0 pZ0o0oRL Z0Z0Z0ZP 0o0A0Z0Z ZPZ0Z0Z0 PZPZ0Z0Z ZKZ0Z0Z0 a

3987 8

b

3989

rZ0l0s0j Zpo0Z0ap 0Z0o0Z0Z ZPOPo0Z0 0ZNZPZbm Z0M0A0O0 0ZQZBm0Z ZRZ0ZRJ0 a

0Zrl0skZ obZ0ZpZ0 0o0Z0m0o ZPZpm0o0 0ZPM0Z0A OQZ0Z0Z0 0Z0Z0OPO ZBS0ZRJ0 a

3986 8

Perpetual check

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0j0s0ZrZ ZpZ0ZpZ0 pZ0ZpZ0Z Z0ZPM0Zq 0Z0Z0Z0o Z0Z0L0O0 PO0Z0O0O Z0S0a0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3991 8 7 6 5 4 3 2 1

3994

0j0s0ZrZ ZpZ0ZpZ0 pZ0ZpZ0Z Z0ZPM0Zq 0Z0Z0Z0o Z0Z0L0O0 PO0Z0O0O Z0S0Z0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

3996

rZ0Z0Z0j opZbZ0Z0 0ZpZ0ZQA Z0Opl0Z0 0Z0a0Z0Z Z0Z0Z0Z0 PO0Z0ZPO Z0Z0ZRZK a

c

qZrZ0skZ Z0Z0apo0 0m0ZpZ0Z ZNm0O0ZQ pA0MbZ0Z Z0Z0Z0S0 0ZPZ0ZPO Z0Z0ZRZK a

3993 8

b

3995

0Z0Z0s0Z ops0o0j0 0Z0ZRZpZ Z0lPZ0o0 0ZbZ0Z0L Z0Z0Z0Z0 PZ0Z0OBZ Z0Z0S0J0 a

0Z0ZrZkZ Z0S0Zpa0 pZ0O0ZpZ ZpZ0Z0Z0 0Z0O0o0o O0Z0ZPmP 0O0ZNJPZ Z0ZBZ0Z0 a

3992 8

Perpetual check

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Zqsra0m Z0Z0Z0Zk 0Z0o0Z0A Z0oPopLP pZPZRZpZ Z0Z0Z0Z0 PZ0Z0OPM Z0S0Z0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

3997 8 7 6 5 4 3 2 1

4000

rZqZnsnj o0ZbZ0Zp 0Z0o0apZ MNoPopZ0 0ZPZPZ0Z Z0Z0ZBZ0 PZ0A0OPO ZRZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4002

rZbl0s0j ZpZ0Z0ap 0Z0Z0ZpZ Z0M0o0Zn 0ONmPo0Z Z0Z0ZPZ0 0A0ZBZPO ZRZQZRJ0 a

c

rZ0ZrZkZ opo0Zpap nZ0o0lpZ ZNZPo0Zb 0OPZPm0Z Z0Z0ANZP PZQZ0OPZ ZRSBZ0J0 a

3999 8

b

4001

0ZbZ0Z0j Z0M0Z0Zp 0ZNo0l0Z Z0oPZpZ0 0ZPZrS0Z Z0Z0m0ZP 0Z0Z0LPZ Z0Z0Z0J0 a

rZ0lnZ0j Z0ZbZ0a0 0o0o0ZrZ ZNZPo0op pO0ZPo0Z S0Z0ZPZP 0ZQZBAPZ Z0Z0ZRJ0 a

3998 8

Profilax

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrZkZ opZ0lpan nZpo0ZpZ Z0Z0Z0Op 0ZPMPA0Z Z0M0ZPZ0 PO0LBZ0O Z0ZRZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4003 8 7 6 5 4 3 2 1

4006

rmblrZkZ ZpZ0Zpap 0Z0o0mpZ o0o0Z0Z0 NZPZPZ0Z ZNZ0ZPZ0 PO0ZBZPO S0AQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4008

0s0l0skZ Z0mbo0ap po0o0ZpZ Z0oPZ0Zn PZPZ0Z0Z Z0M0ANZ0 0O0LBOPO S0Z0S0J0 a

c

rZ0Z0Z0j Zpobl0Zp 0Z0o0Z0Z o0ZPo0ZP 0ZPZNs0Z Z0Z0L0Z0 POKZ0ORZ Z0Z0Z0S0 a

4005 8

b

4007

0ZrZ0ZkZ Z0Z0Zpap pZ0S0Z0Z Z0o0Z0Zp 0ZPZQO0A ZqZ0Z0ZP 0Z0Z0ZPZ Z0Z0Z0J0 a

rZrZ0ZkZ oponlpa0 0Z0o0mpZ Z0ZPo0Mp 0ZPZPZ0O Z0M0APZ0 PO0ZQZPZ ZKZRZ0ZR a

4004 8

Profilax

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0s0j opobZ0ap nZ0o0Z0Z Z0ZPopZ0 0ZPZ0mPZ Z0M0ANZP POQZ0O0Z Z0J0SBS0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4009 8 7 6 5 4 3 2 1

4012

0Z0Z0j0Z Z0s0Zpap pZ0orZ0Z Z0OQo0ZP 0Z0ZPo0Z Z0ZRZ0Z0 Bl0Z0O0Z Z0Z0ZKZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4014

0ZrZ0Zks ZbZ0Zpo0 pZ0lpZ0Z L0Zpm0Z0 0Z0MPZ0Z Z0ZBZPZ0 POPZ0Z0Z ZKZRZ0S0 a

c

0Zks0Z0s opl0Zpo0 0Z0ZpZ0Z ZPa0Z0Zp 0ZBZ0ZnZ Z0O0Z0O0 0O0ZQO0O S0A0ZRJ0 a

4011 8

b

4013

0Z0s0s0j Z0Z0Z0op 0Z0Z0Z0Z oPZpo0Zq PZ0ZNa0Z Z0ZRZ0ZP QZ0Z0OPZ Z0ZRZ0J0 a

0Zks0Z0Z Zbl0ZpM0 pZ0spZ0o Z0mnZ0Z0 0o0M0ZPO ZBZ0ZPZ0 POPL0Z0Z Z0JRZ0ZR a

4010 8

Profilax

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0s0ZkZ opZ0Z0o0 0ZnZ0Z0o Z0Zqm0Z0 0Z0ZRZ0Z ZPLpZPZ0 0O0Z0Z0O Z0Z0S0MK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4015 8 7 6 5 4 3 2 1

4018

rZbl0Z0s opo0Zpj0 0ZnZpZ0Z Z0Z0Z0ZR 0Z0Z0Z0Z Z0ZBZNZ0 POPZ0JPZ S0Z0Z0ZQ a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4020

rZ0ZnZkZ Z0ZqZ0ap 0ZnobZpZ ZNZ0o0Z0 0oPZPZ0Z ZNZQA0Z0 0O0ZBZPO Z0Z0ZRJ0 a

c

0Z0l0s0j Z0Z0Z0Zp 0Zbo0ZpZ Z0ZNo0a0 0Z0ZPZ0Z Z0O0ZpO0 QONZ0O0O Z0Z0ZRJ0 a

4017 8

b

4019

rZbZ0skZ Z0ZnZpop pZ0ZpZ0Z ZplNO0ZQ 0Z0S0S0Z ZBZ0Z0Z0 POPZ0ZPO Z0Z0Z0J0 a

0ZrZ0skZ ZbZ0lpo0 0o0o0Z0o o0m0o0Zn 0ZPZPZ0Z O0MBZPZ0 0OQA0ZPO S0Z0ZRJ0 a

4016 8

Profilax

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0Z0skZ Z0Z0ZpZp 0lpZ0LpZ o0Z0Z0Z0 0ZBZ0Z0Z ZPZ0ZPZ0 bZPZ0ZPO Z0JRZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4021 8 7 6 5 4 3 2 1

4024

0Z0l0Z0j o0ZrZ0Zp 0ZpAba0L ZrZ0opZ0 0ZNZ0m0O Z0Z0ZPZB POPS0Z0Z Z0J0Z0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4026

0Z0Z0s0j opl0Z0Zp 0Z0o0ZnZ Z0Z0Z0Z0 0ZPSNZ0Z Z0Z0ZrZP PO0L0O0Z Z0J0Z0S0 a

c

rZ0ZkZ0s o0Zpm0op bl0LpZ0Z Z0o0OpZ0 0ZPZ0O0Z ZPZ0ZKZ0 PZ0Z0MPO S0Z0ZBZR a

4023 8

b

4025

0sbl0s0j Z0Z0Z0Zp po0o0Z0Z Z0ZPo0on 0Z0ZPo0a Z0M0ZPZ0 PO0LBZPO ZKS0ZRA0 a

0l0Z0Z0j Z0o0Zpob 0o0o0m0o ZPZPoBm0 0APZ0Z0M L0Z0ZPO0 0Z0ZPZ0O Z0Z0Z0J0 a

4022 8

Profilax

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0s0ZkZ obZnlpo0 0o0opm0o Z0o0Z0Z0 0ZPO0Z0A O0ZBONZ0 0OQZ0OPO Z0ZRZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4027 8 7 6 5 4 3 2 1

4030

0sbZ0lkZ Zpm0spap pMpZ0ZpZ M0O0m0Z0 PZ0ZPZ0Z Z0Z0APZ0 0Z0LBZPO Z0ZRZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4032

0Z0lrakZ ZpZ0Zpop bZ0Z0Z0Z Z0ZNZ0Z0 0Z0L0Z0Z Z0Z0Z0O0 POrZ0OBO Z0S0S0J0 a

c

rZ0l0skZ ZpZnopap 0ZnobZpZ o0Z0Z0Z0 PZ0ZPO0Z ZNM0A0Z0 0OPZBZPO S0ZQZRJ0 a

4029 8

b

4031

rZ0s0ZkZ opl0Zpop 0Z0mpm0Z Z0apZ0Z0 0Z0M0O0Z OPZ0ZPO0 0APZ0ZKO ZRZQSBZ0 a

0Z0ZrZkZ opZqZpo0 0Z0anZ0Z ZPZ0Z0Z0 PZ0orZ0Z Z0ZNZNO0 0ZRZPO0Z Z0ZQS0J0 a

4028 8

Profilax

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZrZ0ZkZ ZpZ0o0ap 0onZ0opZ Z0ZpZ0Z0 0Z0ObA0Z O0Z0ONZ0 0O0ZBOPO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4033 8 7 6 5 4 3 2 1

4036

rZqZkZ0s obZ0Zpo0 0o0Z0Z0Z Z0mpZ0M0 0Z0Z0Z0Z O0Z0Z0Z0 0OQZ0OPO Z0S0JBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4038

0sbZ0skZ ZpZnlpap pZ0o0mpZ Z0oPZ0Z0 PZ0ZPZ0Z Z0M0ZNO0 0O0Z0OBO S0AQS0J0 a

c

0Z0a0ZkZ Z0oqZpo0 0ZnZnZpZ ZpZpO0Z0 rO0Z0Z0Z ZNO0ANZ0 0Z0S0OPO ZQZ0Z0J0 a

4035 8

b

4037

rZ0ZrZkZ o0ZnZpo0 pZ0o0ZbZ O0oPZ0Zp 0ZNZ0l0Z ZPZ0M0Z0 0ZPL0OPO Z0Z0SRJ0 a

0s0lrZkZ mpZnZpap pZ0o0ZpZ O0oPZ0Z0 0ZQZ0O0Z S0M0Z0OP 0O0ZPZBZ Z0A0ZRJ0 a

4034 8

Profilax

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0skZ opZqapop 0ZnZbZ0Z ZQo0O0Z0 0ZPo0A0Z Z0ZPZNO0 PZ0Z0OBO S0Z0S0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4039 8 7 6 5 4 3 2 1

4042

0ZrZrlkZ ZpZnZ0op pZ0apmbZ Z0o0ZpZ0 0ZPO0Z0Z Z0MNOPO0 PA0Z0LBO Z0ZRS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4044

rZbl0skZ o0Znapmp 0o0o0ZpA Z0oPo0Z0 0OPZPZ0Z O0M0ZNO0 0Z0LBO0O S0Z0ZRJ0 a

c

rZ0Z0skZ o0ZnZbap 0Z0Z0lpZ ZNOpo0Z0 0O0Zno0Z ONZQZ0O0 0Z0Z0OBO ZRA0S0J0 a

4041 8

b

4043

0srZ0ZkZ ZpZ0ZpZp 0Z0ZplpZ o0m0Z0Z0 0ZPZ0Z0O ZPZ0L0O0 PZ0S0OBZ Z0ZRZ0J0 a

0s0Z0ZkZ ZrZnZpop 0Z0l0Z0Z Zpo0o0Z0 0Z0Z0Z0Z ZQZPA0O0 0O0ZPO0O S0Z0ZRJ0 a

4040 8

Profilax

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opZ0lpap 0Zpo0ZpZ Z0m0m0Z0 0ZPAPZ0Z Z0M0ZNZ0 PO0LBOPO Z0ZRS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4045 8 7 6 5 4 3 2 1

4048

0Zrl0skZ ZpZ0Zpa0 0Zpo0Z0Z o0ZPo0op 0ZPZPm0Z Z0MnZPA0 POQM0ZPO S0Z0ZRZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4050

rZbZ0skZ opZnZqop 0Z0o0Z0Z ZBoPZ0S0 0Z0ZpO0Z ZQZ0Z0ZN PZ0A0J0Z Z0Z0Z0ZR a

c

0ZbskZ0Z ZpZ0apZr pZ0ZpZpo Z0lnM0Z0 PZ0M0Z0Z Z0ZRZQA0 0OPZ0OPO Z0ZRZ0J0 a

4047 8

b

4049

0Z0s0s0Z opZnlpZk 0ZpZbmpo Z0Z0Z0Z0 0Z0ZPZ0O Z0L0ZNM0 POBZ0OPZ Z0S0S0J0 a

rZ0lkZ0s opZ0apop 0mnZpZ0Z Z0ZpObZ0 0Z0O0Z0Z Z0M0Z0Z0 PO0ZBOPO S0AQMRJ0 a

4046 8

Profilax

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0Z0aks Z0Z0Zqo0 pZpo0onZ Z0Z0Z0Zp 0ZpLPObO Z0M0ZNZ0 POPZ0ZPZ ZKA0S0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4051 8 7 6 5 4 3 2 1

4054

rZrlnZkZ opZbZpap 0Z0o0ZpZ ZPZPo0Zn PZ0ZPZ0Z Z0MNZ0O0 0Z0A0OBO S0ZQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4056

rZblrmkZ ZpZ0Zpap pZpZpZpZ Z0OpZ0Z0 0Z0O0O0Z Z0MBZNZP POQZ0OPZ Z0S0S0J0 a

c

rZbl0ZkZ Z0o0ZrZp pZPo0m0Z ZpZPo0o0 0O0ZPo0Z Z0M0ZPZ0 PJ0ZBLPO Z0ZRZ0ZR a

4053 8

b

4055

0Znl0skZ opZrZpap 0ZpZpZpZ Z0OpZ0Zn PZ0O0Z0Z ZPZBO0ZP 0AQZ0OPZ S0ZRZNJ0 a

rZbZ0skZ Zpo0Z0an nZ0o0Z0Z o0ZPo0lp 0ZPZPopZ OPMNZPZ0 0JBL0APO Z0ZRS0Z0 a

4052 8

Space advantage

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbanZkZ ZpZ0l0Z0 0Z0o0m0s ONZPo0o0 0ZNZPoPZ Z0ZQZBZP 0Z0Z0AKZ S0Z0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4057 8 7 6 5 4 3 2 1

4060

rZblrZkZ opZ0mpo0 0Z0o0m0o Z0oPZ0Z0 0ZPZ0O0Z O0OBZ0M0 0Z0Z0ZPO S0AQZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4062

0Z0srZkZ obZnZpop 0oqopa0Z Z0o0Z0Z0 0ZPOPZ0Z ZPZ0ZNO0 PA0S0OBO Z0ZQS0J0 a

c

0s0l0skZ ZnZbZpZp 0Z0o0Zpa o0oPo0Zn 0oPZPZ0Z ZPZ0M0O0 PA0MQOBO S0Z0ZRJ0 a

4059 8

b

4061

0Z0ZrakZ Z0l0spop 0opo0Z0Z o0m0Z0Z0 0ZPZPZ0Z ZPA0S0OP PZ0L0OBJ Z0Z0S0Z0 a

0sbZ0skZ ZpZ0lpop pZpapm0Z Z0M0M0Z0 0Z0O0O0Z Z0Z0O0Z0 PO0Z0OBO S0Z0ZRJ0 a

4058 8

Space advantage

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0Zns0Z ZpZbZpak pZ0o0Zpo l0oPo0Z0 0ZPZPZPO Z0MBAPM0 PO0L0Z0Z S0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4063 8 7 6 5 4 3 2 1

4066

rZnl0s0Z ZponZ0ak pZ0o0Zpo Z0OPo0Z0 QO0ZPo0Z Z0M0ZPZ0 PZ0M0APO Z0S0ZRJ0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4068

rZbZrZkZ ZpZnlpmp 0Z0o0ZpA o0oPo0Z0 0ZPZPZ0Z O0M0Z0ZP 0O0LBOPZ S0Z0ZRJ0 a

c

rs0mnakZ Z0lbZ0op pZ0o0o0Z ZpoPoNZ0 0ZPZPZ0O ZPZ0Z0Z0 PZBZ0OPM S0AQS0J0 a

4065 8

b

4067

rl0s0mkZ ZbZ0Zpop 0o0o0m0Z Z0oPo0Z0 0ZPZPZ0Z ZPA0Z0OB 0L0M0O0O Z0ZRS0J0 a

0Z0Z0ZkZ Z0ZbopZp pl0o0mpZ m0oPZ0Z0 0ZPZPO0Z O0Z0M0OP 0ZQM0ZBJ Z0Z0Z0Z0 a

4064 8

Space advantage

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opZpapop qZ0Zpm0Z Z0oPZ0Z0 0Z0ZPZ0Z Z0M0ZNZ0 POPZ0OPO S0AQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4069 8 7 6 5 4 3 2 1

4072

0sbs0Z0Z o0mpjpop 0o0MpZ0Z Z0O0Z0Z0 0ZPO0Z0Z Z0Z0Z0O0 PZ0ZKOBO ZRZ0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4074

0sqZ0skZ Z0mbapo0 0Z0o0m0o o0oPZPZ0 0oPZ0A0Z ZPZBZNZP PZQZNZPZ S0Z0ZRJ0 a

c

nj0Z0Zrs oplba0o0 0ZnZpo0o Z0ZpO0Z0 0Z0O0O0Z OPZBANZ0 0Z0LNZPO S0S0Z0J0 a

4071 8

b

4073

0ZrZnskZ oblnZpZp 0o0Z0Z0Z Z0o0oPZ0 0ZPo0Z0O ZPZPa0O0 PA0ZQZBJ SNZ0MRZ0 a

0ZnZnZkZ ZrZbZ0ap pZ0o0opZ Z0oPoPZ0 PZPZPZPZ Z0MNA0Z0 RZ0ZBZ0O Z0Z0Z0J0 a

4070 8

Space advantage

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0l0skZ Zpa0Zpop pZpZpm0Z O0M0Z0Z0 0O0ZPZ0Z ZQZ0Z0O0 0Z0O0OBO Z0S0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4075 8 7 6 5 4 3 2 1

4078

rZ0ZrZkZ Z0lnZ0op bZpZpa0Z o0OpZ0m0 0o0OPM0Z ZPZ0Z0O0 PAQM0ZBO S0Z0S0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4080

0Z0Z0Z0j o0mnZqap 0o0o0ZpZ Z0oPZpZ0 0ZPZ0O0Z ZPMBZQOP PZ0A0ZKZ Z0Z0Z0Z0 a

c

0Z0ZkZ0Z orZqapo0 0ZpZpZ0s Z0ZpO0Zp QOPZ0Z0Z O0Z0ZNZ0 0Z0Z0OPO S0Z0ZRJ0 a

4077 8

b

4079

0s0ZnskZ ZpoqZpZp pZ0apZpZ Z0Z0Z0O0 0ZPOBZ0Z ZQZ0ZPA0 PO0Z0Z0O ZKZRZ0ZR a

bs0lrZkZ Z0ZnZpa0 pZpZ0mpo OpZ0o0Z0 0OPZPZ0Z Z0Z0SNZP 0ZBMQOPZ ARZ0Z0J0 a

4076 8

Space advantage

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZrZkZ ZpZ0opap 0lpZ0mpZ o0mpZ0Z0 PZ0ZPZ0Z ZPZPZNO0 0APM0OBO S0ZQS0J0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4081 8 7 6 5 4 3 2 1

4084

0sbZnsnj o0Z0Zqap 0o0o0ZpZ O0oPopO0 0OPZPZ0Z Z0MNA0Z0 0Z0ZBO0O S0ZQZ0SK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4086

bZ0ZqskZ Z0mnZpap 0ZpZ0ZpZ ZpO0o0Z0 0O0ZPZ0Z Z0M0ANZP 0ZQZBOPZ S0Z0Z0J0 a

c

0Znl0s0Z Z0Zbs0ak 0o0o0opZ o0oPo0Zp PZPZPZ0Z S0Z0Z0ZP 0OBANOPZ Z0L0ZRJ0 a

4083 8

b

4085

0sbZ0s0j o0Z0l0Zn no0o0o0Z ZNoPoPop 0OPZPZ0Z ORZ0L0ZP 0ZBM0ZPZ Z0Z0S0J0 a

rZnl0skZ ZpZbZ0ap pZ0o0ZpZ Z0oPo0Z0 PZPZPZPZ Z0M0APZ0 0O0M0Z0Z S0ZQJ0ZR a

4082 8

Space advantage

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0l0skZ opm0Z0ap 0Z0o0Zpm Z0oPZpZ0 0ZPZ0OPZ Z0M0Z0ZP PO0ABZKZ S0ZQZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4087 8 7 6 5 4 3 2 1

4090

0s0Z0skZ Z0lnapop pZbo0Z0Z Z0o0o0Z0 0ZPZPO0Z ZPM0Z0O0 PZ0Z0ZBO S0AQS0J0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4092

rZ0ZkZ0s opZqo0ap 0mpZ0ZpZ Z0ZpOpZn 0Z0O0O0A Z0ZBZRZP POPLNZPZ S0Z0Z0J0 a

c

rZ0Z0skZ ZbZnZ0o0 0ZpZpZ0a ZpOpZ0Z0 pO0OPZqZ O0Z0Z0O0 0AQZ0ZBZ S0Z0SNJ0 a

4089 8

b

4091

rm0l0Z0j Z0Znarop 0ZpZpZ0Z Z0opOpZ0 0O0O0O0Z Z0ZBA0Z0 0Z0LNO0O ZRS0Z0ZK a

0l0a0skZ Z0ZnZpmp 0ZpZpZpZ ZrOpO0Z0 No0O0ZPZ ZPZNZPZ0 0AQZ0Z0O Z0Z0SRJ0 a

4088 8

Space advantage

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0s0ZkZ0s opoqZpop 0ZnZpZ0Z Z0O0OnM0 0Z0OQZ0Z Z0O0Z0Z0 PZ0Z0ZPO ZRA0ZRJ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4093 8 7 6 5 4 3 2 1

4096

rZbZqs0j ZpZnZpap pZ0o0mpZ Z0oPo0A0 PZPZPZPZ Z0M0ZPM0 0O0L0Z0O S0Z0JBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4098

0s0ZkZ0s Z0o0Zpa0 pm0o0Z0o Z0oPo0oP qZ0ZPZPZ O0Z0ZQS0 0OPA0O0Z Z0JNZ0ZR a

c

rl0Z0s0Z ZpZ0opjp nObo0ZpZ O0Z0Z0Z0 0Z0ZPO0Z Z0M0L0Z0 0Z0ZBZPO S0Z0ZRJ0 a

4095 8

b

4097

rZ0lrZkZ Zpo0Zpop 0ZnobZ0a o0mNZ0Z0 0ZPZPO0Z ZPZ0Z0Z0 PABLNZPO S0Z0ZRJ0 a

rZ0l0skZ opZ0Z0ap 0Z0o0opZ Z0ZNo0Z0 0ZPZPObZ Z0Z0A0Z0 PO0L0ZPO S0Z0ZRJ0 a

4094 8

Space advantage

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0l0Z0s0Z Z0Zro0j0 0obo0opZ o0m0Z0Zp 0ZPLPO0Z Z0M0ZBZ0 PO0S0ZPO Z0Z0ZRZK a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4099 8 7 6 5 4 3 2 1

4102

rZbZ0skZ opZpZ0Zp 0Z0Zpm0Z Z0Z0ZpZ0 0ZPS0O0O Z0M0Z0Z0 PO0ZBZPZ Z0J0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4104

0Z0ZrskZ o0ZqZ0Zp 0Z0Zbo0Z ZpZnZpo0 0ZpO0Z0Z Z0O0ZQOP POBM0O0Z S0Z0S0J0 a

c

rZbl0s0Z ZponZpak 0Z0o0mpo o0ZPZ0Z0 0O0Z0Z0Z O0M0ANZP 0ZPZBOPZ ZRZQS0J0 a

4101 8

b

4103

rZ0Z0skZ ZqZ0opZp 0obo0ZpZ o0m0Z0Z0 0ZPLPO0Z ZPM0Z0Z0 PZ0ZBZPO Z0SRZ0J0 a

rm0l0skZ obZ0a0op 0o0o0m0Z Z0oPZpZ0 0ZPZpO0Z ZNM0O0ZP PO0ZBZPZ S0AQZRJ0 a

4100 8

Space advantage

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0Z0ZqZkZ Z0ZnsrZp no0o0opA o0oPo0Z0 PZPaPO0Z ZPZ0ZROP 0Z0LNZKZ ZBZ0ZRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4105 8 7 6 5 4 3 2 1

4108

rZbZ0j0s opL0apo0 0Z0Zpmqo ZBZpO0A0 0Z0Z0Z0Z Z0M0ZPZ0 POPZ0O0O S0Z0J0S0 a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4110

0Zks0a0s L0o0Zpop 0ZpZqZ0Z Z0O0m0Z0 0Z0ZNZ0Z Z0Z0ZPZ0 PO0Z0OKO S0A0ZRZ0 a

c

0Zks0Zns opZnZpop 0ZpZpZ0Z l0Z0Z0Z0 0a0O0A0Z O0M0ZQZP 0OPZBOPZ S0Z0J0ZR a

4107 8

b

4109

rZ0Z0a0L opl0Zko0 0Z0ZpopZ ZbZpm0Z0 0Z0Z0Z0Z ZPZ0APZ0 0O0Z0JPO SBZ0Z0ZR a

rZ0ZkZ0s oQo0Zpop 0ZnZ0Z0Z Z0ZnZ0Z0 0Z0OqZbZ O0Z0ANZ0 0ZPZBOPO S0Z0J0ZR a

4106 8

Double rook sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZ0skZ opZ0opap 0Zno0mpZ l0O0Z0Z0 0Z0APO0Z Z0M0ZNZ0 POPZ0ZPO S0ZQJBZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4111 8 7 6 5 4 3 2 1

4114

rm0Z0Z0L opZ0okZp 0Z0Z0Z0Z Z0opZ0Z0 0Z0O0Z0Z Z0Z0Z0Z0 PZPZKOPO l0Z0Z0MR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4116

rZbZ0skZ o0ZpZpAp 0o0Z0ZpZ Z0Z0Z0Z0 0ZPZ0Z0Z Z0Z0Z0Z0 PO0LBOqO S0Z0J0ZR a

c

rZ0Zka0s ZblpZpop pZ0Zpm0Z ZpZ0O0Z0 0Z0Z0ZnZ ZBM0ZNZ0 POPAqOPO S0Z0ZRJ0 a

4113 8

b

4115

0s0ZkZ0s oqZ0opLp 0Z0o0ZpZ Z0oNZ0Z0 0Z0ZnO0Z Z0Z0Z0Z0 POPAKZPO ZRZ0Z0ZR a

rmbZ0Z0L opZpjpZp 0Z0ZpZ0Z Z0Z0O0Z0 0Z0lnZ0Z Z0Z0Z0Z0 PZPZKOPO S0A0ZBZR a

4112 8

Double rook sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0ZkZ0s Z0Z0Zpop pZ0ZpZ0Z MpZqZ0Z0 0Z0Z0aBZ Z0L0Z0Z0 POPZ0ZPO ZKZRZ0Z0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4117 8 7 6 5 4 3 2 1

4120

rmbZkZ0s Z0l0Zpop pZ0Zpm0Z ZpZ0O0A0 0a0M0Z0Z Z0M0Z0Z0 POPZQZPO S0Z0JBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4122

rmbZkZ0s opZ0ZpLp 0Z0ZpZ0Z lPZpZ0Z0 0Z0ZnZ0Z O0M0Z0Z0 0APZPaPO S0ZKZBMR a

c

rZ0Zka0s opZnopop 0Z0Z0Z0Z ABo0Z0Z0 0Z0l0O0Z Z0Z0Z0Z0 PZPZ0ZPO S0ZQJ0ZR a

4119 8

b

4121

rZblkZns opZ0Z0op 0ZnZpo0Z Z0a0Z0Z0 QZ0oPA0Z Z0M0ZNZ0 POPZ0OPO Z0JRZBZR a

rZbZkZns o0o0lpZp 0Zpa0Z0Z Z0Z0Z0Z0 0Z0O0ZpZ Z0ZQA0Z0 POPZPZPO SNZ0JBZR a

4118 8

Double rook sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s Zpo0ZpLp pZnZpZ0Z O0ZqZ0Z0 0ZpZ0OnZ Z0Z0Z0O0 0O0OPZ0O SNA0JRZ0 a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4123 8 7 6 5 4 3 2 1

4126

rmbZkZ0s opZ0Zpop 0Z0ZpZ0Z Z0Z0Z0Z0 0aPl0Z0Z Z0Z0Z0O0 PZ0A0O0O S0ZQJBMR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4128

0s0lkZ0s opo0Zpop 0Zno0M0Z Z0a0o0Z0 0ZPZ0ZbZ ZQZ0O0O0 PO0ONOBO S0A0J0ZR a

c

0ZrZ0j0s oqZ0Zpop 0Z0Z0Z0Z Z0Z0Z0Z0 0Z0L0Z0Z Z0mPZ0O0 PO0APZ0O ZRZ0J0ZR a

4125 8

b

4127

rZ0Zka0s Z0obZpop pZpZ0Z0Z Z0Z0M0l0 QZ0ZPZ0Z Z0O0Z0Z0 PZ0O0OPO S0A0J0ZR a

rm0j0arZ opZ0oQo0 0Z0ZpZ0o Z0Z0M0Z0 0ZPZPZ0Z Z0M0Z0Z0 Pl0O0OPO S0m0ZKZR a

4124 8

Double rook sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbZka0s ZpZ0o0Zp pZ0ZPmpZ Z0o0Z0Z0 0ZBZ0Z0Z Z0M0ZPZ0 PlPZQZ0O S0Z0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4129 8 7 6 5 4 3 2 1

4132

rZbZka0s opZpZpZ0 nZ0O0Z0Z ZNo0ZpZp 0Z0ZpO0Z Z0O0O0ZN PO0LBZqO S0Z0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4134

rm0Z0Z0L opo0jpop 0Z0Z0Z0Z Z0apO0Z0 0ZPZ0Z0Z Z0Z0Z0Z0 POKAqZPS SNZ0Z0Z0 a

c

rmbZkZ0s opZpo0ap 0Z0Z0ZpZ Z0onZ0A0 0Z0Z0Z0Z Z0MBZNZ0 PlPL0ZPO ZRZ0J0ZR a

4131 8

b

4133

rm0Z0a0s obZ0jpo0 0o0Zpm0o ZBoqO0ZQ 0Z0Z0Z0A Z0Z0O0Z0 POPZ0OPO SNZ0J0ZR a

rZbZ0s0Z Zpl0Zpok pZ0Z0Z0Z Z0o0ZnZ0 0ZPZQZPZ ZPM0O0Z0 PA0Z0OKa S0ZRZ0Z0 a

4130 8

Double rook sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rmbZka0s opopZ0op 0Z0ZpZqZ Z0Z0Z0Z0 0Z0ONZ0Z Z0Z0Z0Z0 POPZ0OPO S0ZQJBMR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4135 8 7 6 5 4 3 2 1

4138

rZbZ0j0s o0Z0Zpo0 0onZpZ0o l0opO0Z0 0Z0O0L0O Z0OBZNZ0 PZPJ0OPZ S0Z0Z0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4140

rmbj0Z0s opZnZpZp 0Z0ZpZpl ZNopO0Z0 0Z0O0ZQZ Z0ZBZ0ZN POPZ0OPZ S0Z0J0ZR a

c

rZbZ0jns opL0Z0o0 0ZnZpl0o ZPZpZ0Z0 0Z0Z0Z0Z Z0ZpZNZ0 PZPA0OPO S0Z0JBZR a

4137 8

b

4139

rmbZkZ0s opZ0Zpop 0Z0ZpA0Z Z0Z0Z0Z0 0Z0MBZ0Z Z0Z0Z0Z0 PlPLKOPO Z0Z0Z0ZR a

rm0l0Z0s obo0Zko0 0o0ZpO0Z Z0ZpO0Z0 0Z0O0M0Z Z0Z0Z0Z0 POPZ0OPZ S0ZQJ0ZR a

4136 8

Double rook sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

0ZrZka0Z opZbmpZQ 0Z0ZpZ0Z Z0ZpM0Z0 0Z0o0Z0Z O0ZBZ0Z0 0ZPZKOPO l0A0Z0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4141 8 7 6 5 4 3 2 1

4144

rmbZ0ZkZ opZ0Z0op 0Z0ZpAnZ Z0opZ0Z0 0Z0O0ZQZ O0Z0ZNZ0 0ZPJ0OPO l0Z0ZBZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4146

rmbZkZ0s opo0Zpop 0Z0Z0Z0Z Z0Z0o0Z0 0ZqZ0Z0Z A0O0Z0L0 PZPO0Z0O S0Z0J0MR a

c

rZbZ0skZ o0Z0Zpop 0Z0Z0m0Z lpa0ZnZ0 0Z0ZpOPZ Z0MPZ0ZP POPA0Z0Z Z0JRLBMR a

4143 8

b

4145

rZ0ZkZrZ opZbm0ZQ 0Z0Zpo0Z Z0ZpO0Z0 0Z0Z0A0Z O0Z0ZNZ0 0ZPJ0OPO l0Z0ZBZR a

rZ0ZkZ0s opo0Zpop 0ZnZ0Z0Z ZBZQO0Z0 0a0O0Z0l Z0M0Z0O0 POPm0Z0O S0Z0J0ZR a

4142 8

Double rook sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rm0Z0skZ opo0Zpop 0Z0Z0A0Z Z0Z0L0Z0 0Z0Z0O0Z Z0Z0Z0Z0 POPoBZqO S0ZKZ0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4147 8 7 6 5 4 3 2 1

4150

rm0l0Z0s opo0Zkop 0Z0o0m0Z Z0Z0Z0Z0 0Z0OPZbM Z0Z0ZRZ0 POPZ0Z0o SNAQZ0ZK a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4152

rmbZ0ans opjpZ0Zp 0ZpZ0ZBZ Z0Z0M0ZQ 0Z0OpZ0Z Z0M0Z0Z0 POPZKO0O S0A0Z0Zq a

c

rm0Zkans o0o0Zpop 0o0Z0l0Z Z0Z0o0Z0 0ZBZPZ0Z ZQZ0Z0Z0 POPZ0OPO SNA0J0ZR a

4149 8

b

4151

rZ0ZkZnL opo0l0Z0 0ZpZ0ZpZ Z0a0ZbZ0 0Z0Z0Z0Z Z0Z0Z0Z0 POPO0OPO SNAKZ0ZR a

rmbZ0LBs opokZ0Zp 0Z0Z0ZpZ Z0Z0a0Z0 0Z0lpZ0Z Z0Z0Z0Z0 POPZ0OPO SNA0J0ZR a

4148 8

Double rook sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZ0ZkZ0s oQoqZ0op 0ZnZpZ0Z Z0ZpO0Z0 0a0MnZ0Z Z0O0Z0Z0 PO0Z0OPO SNA0J0ZR a

b

c

d

e

f

g

h

Laszlo Polgar

Chess Middlegames

4153 8 7 6 5 4 3 2 1

4156

QZ0Z0a0s o0okZpop 0Z0Z0Z0Z ZbZ0l0Z0 0Z0ZnZ0Z Z0O0A0Z0 PO0Z0OPO SNZ0J0ZR a

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

c

d

e

f

g

8 7 6 5 4 3 2 1

h

7 6 5 4 3 2 1

b

d

e

f

g

h

b

c

d

e

f

g

h

4158

rZ0lkZ0s Z0o0ZpLp pZ0obZ0Z Z0o0Z0A0 0Z0ZnZ0Z Z0Z0Z0ZP POPZ0OPZ SNZ0J0ZR a

c

rZbZkZ0s opZ0mpa0 0ZpZ0Z0o Z0ZqZ0o0 0Z0MpZ0Z Z0Z0L0A0 POPZ0OPO Z0JRZBZR a

4155 8

b

4157

rZ0ZkZns oQo0Zpop 0Z0obZ0Z Z0a0Z0Z0 0ZBZPO0l Z0Z0Z0Z0 POPZ0ZPO SNA0ZRZK a

rmbZ0Zns opZkZBop 0Zpo0Z0Z Z0Z0Z0Z0 0a0ZPA0Z Z0ZPZQZ0 PZPJNZPO lNZ0Z0ZR a

4154 8

Double rook sacrifice

c

d

e

f

g

h

8 7 6 5 4 3 2 1

rZbl0Zns opopZkZp 0Z0Z0ZpZ Z0a0L0Z0 0Z0ZPZ0Z Z0Z0Z0Z0 POPO0OPO SNA0J0ZR a

b

c

d

e

f

g

h

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