(1) Steele David - Sloan Sam [A08]
North Carolina Open, Charlotte, 1962
[Rybka 3 (90s)]

A08: King's Indian Attack

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.0-0 0-0 5.d3
Controls e4

5...d5 6.Nbd2 c5 7.e4 dxe4 8.dxe4 Nc6 9.h3
Prevents intrusion on g4 [9.Qe2 Qb6= ]

9...h6
Consolidates g5

10.c3
Secures b4+d4 [10.e5 Nh7= ]

10...Be6 11.Qc2
[11.Qe2 Qb8=/+ ]

11...Qc7
[11...Qc8 12.Nb3=/+ ]

12.Ne1
[12.Nb3 Nd7=/+ ]

12...Rac8
[12...g5!?=/+ ]

13.Nd3= b6
Covers c5

14.Nf4 Bd7 15.Re1
[15.Nd5 Nxd5 16.exd5 Ne5= ]

15...Rfd8
[15...Ne5 16.b3= ]

16.Nf1
[16.Nd5 Qb8= ]

16...e5
[16...Ne5!?=/+ deserves consideration]

17.Nd5= Nxd5 18.exd5
White has a new passed pawn: d5

18...Bf5
Black threatens to win material: Bf5xc2 [18...Ne7 19.Ne3= ]

19.Qe2+/= Ne7
[19...Na5 20.Ne3 Bd7 21.c4+/= ]

20.c4
[20.g4 Bd7+/= ]

20...b5 21.b3 bxc4 22.bxc4 Rb8 23.Be3
[23.g4 Bd7+/= ]

23...Rb6
[23...Bc8!?+/= ]

24.g4 Bd7
[24...Bc8+/- ]

25.Rab1
[25.Nd2 Nc8+/- ]

25...Rdb8
[25...Nc8 26.Nd2+/= ]

26.Qd3
[26.Rxb6 axb6 27.Qd2 Nc8 28.Bxh6 Bf6+/- ]

26...f5
[26...Nc8 27.Bd2 Ra6 28.Qc2= ]

27.Nd2
[27.Rxb6 Rxb6 28.Qd2 fxg4 29.hxg4 Bxg4 30.Bxh6 Bh8+/- ]

27...f4
[27...Rxb1!? is interesting 28.Rxb1 Rxb1+ 29.Nxb1 Nc8+/= ]

28.Rxb6+/- Rxb6 29.Bxf4 Bxg4?
[>=29...exf4!? 30.Rxe7 Qd6+/- ]

30.Be3 Bf5 31.Qa3 Rb4 32.Bf1
[>=32.Nb3!? Nc8 33.d6 Nxd6 34.Bxc5+- ]

32...Nc8 33.Nb3 Bf8 34.Qa5
[34.Bd2!? Rb8 35.Qc1+/- ]

34...Qxa5= 35.Nxa5 Nb6 36.Nc6
White threatens to win material: Nc6xb4

36...Ra4
Black threatens to win material: Ra4xa2

37.Nxe5 Rxa2
Black has a new passed pawn: a7

38.Ng4
White threatens to win material: Ng4xh6

38...h5
Black threatens to win material: h5xg4

39.Nh6+ Kg7?
[>=39...Bxh6!? and Black can hope to survive 40.Bxh6 Rb2= ]

40.Nxf5++/- gxf5 41.Bf4 Ra4 42.d6 Nd7 43.Bd3
[43.h4+/- ]

43...Kf6
[>=43...Ra3!? 44.Bb1 h4+/- ]

44.h4+- Ra6 45.Bg5+ Kf7
[45...Kg6 46.Be7 Ra3 47.Bc2+- ]

46.Be7 Rb6
[46...Rxd6 47.Bxd6 Bxd6 48.Ra1+- ]

47.Bxf5 Nf6
[47...Bxe7 48.Rxe7+ (48.Bxd7 is no comparison 48...Rxd6 49.Bb5 a6=/+ ) 48...Kf6 49.Bh3+- (49.Bxd7?! is much weaker 49...Rxd6 50.Rh7 Kg6 51.Bf5+ Kxf5+/= ) ]

48.Bxf8
[>=48.Kg2!? might be the shorter path 48...a5 49.Kf3 Rxd6 50.Bxd6 Bxd6+- ]

48...Kxf8 49.d7??
White has a mate threat. releasing the pressure on the opponent [>=49.Re6 Kf7 50.Kg2+- ]

49...Rb8??
[>=49...Rd6+/= would be a reprieve]

50.Ra1+- Rd8
[50...Ke7 what else? 51.Rxa7 Rb4+- ]

51.Rxa7 Ke7 52.Rc7 Nxd7 53.Kf1 Kd6 54.Rxd7+ Rxd7 55.Bxd7 Kxd7 56.Ke2 Ke6 57.Ke3 Kf5 58.f4 Kg4 59.Ke4 Kxh4
[59...Kh3 doesn't change the outcome of the game 60.f5 Kxh4 61.Kf4 Kh3 62.f6 Kg2 63.f7 Kf2 64.f8Q Ke2 65.Qd6 h4 66.Ke4 Ke1 67.Qh2 Kd1 68.Kd3 Kc1 69.Qc2# ]

60.f5
[60.Kf3 Kh3 61.f5 Kh2 62.f6 Kh3 63.Kf4 Kg2 64.f7 Kf2 65.f8Q Ke2 66.Qd6 h4 67.Ke4 h3 68.Qh2+ Kf1 69.Kf3 Ke1 70.Qe2# ]

60...Kg5+- 61.Ke5 h4 62.f6 Kh6 63.Ke6 h3 64.f7 Kg7 65.Ke7 h2 66.f8Q+ Kh7 67.Qf3
[67.Qf3 h1Q 68.Qxh1+ Kg6 69.Qd5 Kg7 70.Qg5+ Kh7 71.Kf6 Kh8 72.Qg7# ; 67.Kf6 h1Q 68.Qg7# ] 1-0