(1) Dive,Russell (2334) - Hamal,Manish (2118) [A29]
2012 Istanbul 40th Olympiad Open Istanbul TUR (2.1), 29.08.2012
[Russell Dive]

A29: English Opening: Four Knights Variation with 4 g3

1.c4 Nf6 2.g3 d5 3.cxd5 Nxd5 4.Bg2 e5 5.Nc3 Nb6 6.Nf3 Nc6 7.a3 Be6 8.d3 Be7 9.0-0 0-0 10.b4 f6 11.Bb2 Qd7 12.Re1
[12.Ne4 a5 13.Nc5 Bxc5 14.bxc5 Nc8= ]

[12...a5 13.b5 Nd4 14.Nxd4 exd4 15.Ne4=/+ ]

[13.Ne4!?= ]

13...a5=/+ 14.b5 Nd4 15.Nxd4 exd4 16.Ne4 Qxb5 17.Rxc7 Nd5 18.Rc2 Rc8 19.Rxc8 Rxc8 20.Bxd4 Bxa3
Black has two potentially dangerous passed pawns, so White needs to do something quickly to contain or eliminate them.

21.Qa1 Qb4
[>=21...Bb4!? 22.Rb1 Qd7=/+ ]

22.Rb1+/= Qe7 23.Nc3 Nxc3 24.Bxc3 b6?
[>=24...Bb4!? and Black hangs on 25.Bxb4 axb4+/= ]

25.Rxb6+/- a4?
[25...Bb4 26.Bd4+/- ]

[>=26.Rxe6 was better, then 26...Qxe6 27.Qxa3 Qxe2 28.Bb7+- ]

26...Bb3 27.Kg2
[27.Rb7!? Qd6 28.Bf3+/- ]

27...Bc5+/- 28.Rb7 Qe6 29.Rb5
[29.Qb2!?+/- ]

29...Qd7= 30.Rb7 Qe6 31.Rb5 Qd7= 32.Ra5 Qc7
[32...a3 33.Kg1 Bf8 34.d4= ]

33.Bd2+/- Qb6
[33...Qd7 34.Be3 Bxe3 35.fxe3+/- ]

34.Qc3 Be6 35.Rxa4 Bxf2 36.Qb4 Qxb4 37.Rxb4 Bc5 38.Rb7 Bd4 39.Bf3 Rc2 40.Bb4 Rc1 41.h3 Rg1+ 42.Kh2 Rb1 43.g4 g6 44.Bd2 Rb2 45.Rxb2 Bxb2 46.Kg3 Kf7 47.Ba5 Bb3 48.Bb6 f5
[48...Be5+!? 49.Kf2 f5+/- ]

49.gxf5+- gxf5 50.Kf4 Ke6 51.Kg5 Bg7 52.Bb7 Bd1
[>=52...Kf7+- ]

53.e3 Bf6+ 54.Kh6 Kd7 55.Kxh7 Be2 56.Kg6 Be7 57.Ba6 Bf1 58.Kxf5 Bxh3+ 59.Ke5 Bd6+ 60.Kd5 Be6+ 61.Ke4 Bh3 62.Bb5+ Ke7 63.Kd4 Bg3 64.Bc4 Bc8 65.Bc5+ Kd7 66.Bd5 Ba6 67.Ke4 Bh2 68.d4 Bf1 69.Kf5 Bh3+ 70.Kf6 Bg1 71.e4 Bg2 72.Be6+ Kc6 73.e5 Bf2 74.Bb3 Bf3 75.e6 Bh5 76.Kg5 Be2 77.e7 Be3+ 78.Kg6 Bc1 1-0