Shakmaty Bereolos - The Official Chess Site of Peter Bereolos

White: GM Gabriel Schwartzman
Black: Peter Bereolos
1994 US Open
Round 11

1.c4 g6 2.Nc3 Bg7 3.Nf3 Nf6 4.g3 0-0 5.Bg2 d6 6.d4 Nc6 7.0-0 a6 8.b3 Rb8 9.Nd5 e6 9...Nh5 avoiding the exchange is more common 10.Nxf6+ Bxf6 11.Bh6 Re8 12.Rc1

12.d5 Ne7 13.Rc1 e5 14.e4 c5 15.Ng5 Bg7 16.Bxg7 Kxg7 17.f4 Ng8 18.Nxf7 Kxf7 19.fxe5+ Kg7 20.e6 Bxe6 21.dxe6 Rxe6 22.Qd2 Qe7 23.Rcd1 Nf6 24.Bh3 Nxe4 25.Qd3 Re5 26.Bg2 Rd8 27.Rfe1 Nf6 28.Rxe5 Qxe5 29.Bxb7 a5 30.Qd2 Qe7 31.Bf3 Qc7 32.Re1 Re8 33.Qe3 Qd7 34.Qe6 Qd8 ½-½ Bacrot-Anand Moscow 2007 12...Bd7 13.Qd2 Qe7 14.e4 e5 15.d5 Nd4 16.Nxd4 exd4 17.f4 c5 18.Rce1 Bg7 19.Bxg7 Kxg7 20.e5 Qf8 21.h3 b6 22.g4 Kh8 23.Qf2 Qg7 24.Qg3 Rbd8 25.Qh4 Bc8 26.Kh1 Kg8

27.exd6?! Winning a pawn, but allowing some exchanges that give Black breathing room. Black should be slowly strangled after 27.e6 f6 28.f5 27...f6 28.Rxe8+ Rxe8 29.Re1 Rxe1+ 30.Qxe1 Kf8 31.g5 fxg5?! Black shouldn't rush this exchange which gives White access to the f4 and e5 squares. Waiting with 31...Qf7 was better 32.fxg5 Bf5 33.b4 Qd7 34.bxc5 bxc5 35.Qe5 Qg7 36.Qf4 Qf7 The Bf5 and Qg7 are relatively well placed, so Black should improve his king with 36...Ke8 which sidesteps any pin with Be4 and also gives Black ideas like Kd7, Qh8, Qe8. It is not clear how can make further progress. 37.Kh2 Bd7

Instead, 37...Qe8 might be an improvement, threatening to get active with the queen. 38.Qe5 The bishop endings that can arise after a queen exchange here or on subsequent moves must be evaluated carefully. The positions are dangerous for Black, but there are quite a few sublteties. 38.Qxf7+ Kxf7 39.Be4 Controlling the d-pawn and stopping ...Bf5. However, it looks like Black can hold with 39...Kg7 40.Kg3 h5 41.gxh6+ else Black just has a fortress with Kf7-g7. 41...Kxh6 42.h4 g5 38...Qg7 39.Qe4 39.Qxg7+ Kxg7 40.Be4 is like before 40...h5 39...Bf5 40.Qf4 Qf7 The position is slightly different than on move 36, but the difference is large if Black tries 40...Ke8 White now has 41.Be4 since his h-pawn is not hanging 41.h4 Bd7 42.Qe5 Black looks to have another path to the draw here after 42.Qxf7+ Kxf7 43.Be4 (43.Kg3 Bf5) with 43...Bg4 (but not 43...Kg7 44.Kg3 h5 45.gxh6+ Kxh6 46.Kf4 and Black will get pushed back) 44.Bd3 Ke8 45.Kg3 Bd1 since the White pawn hasn't managed to make it to h6 yet, the King invasion 46.Kf4 Kd7 47.Ke5 Bg4 48.Kf6 Kxd6 49.Kg7? allows Black to turn the tables with 49...Bf5! 42...Qg7?!

It looks like 42...Kg8 had to be tried, when it still is not clear how White breaks down Black's position. It is hard to play such a passive looking defense, especially when offering the queen exchange had been valid on the previous moves. 43.Qe1 Now 43.Qxg7+ Kxg7 44.Kg3 stopping ...Bg4 seems to be winning 44...Kf7 (44...Bf5 45.Be4; 44...h5 45.gxh6+ Kxh6 46.Bh3) 45.Be4 Kg7 46.Kf4 Kf7 (46...h5 47.gxh6+ Kxh6 48.Bd3) 47.Bc2 Kg7 48.Bd1 Kf7 49.h5 Kg7 (49...gxh5 50.Bxh5+ Kg7 51.Be2) 50.h6+ Kf7 51.Bc2 Kf8 52.Ke5 Kf7 53.Bd3 and Black is in zugzwang. 53...Bg4 54.d7 opens a path for the White king 43...Qf7 44.Kg3 Qg7 45.Bf3

45...Bf5? Similar to the note to move 42, the only way to keep trying to resist was 45...Qf7 46.Qe5 Kg8 46.Bg4 Qd7 46...Bc2 or 46...Bd3 is met by 47.Qe6; 46...Bd7 47.Bxd7 Qxd7 48.Qe5 is also hopeless 47.Qe7+ Qxe7 48.dxe7+ Kxe7 49.Bxf5 gxf5 50.Kf4 Kf7 51.h5 a5 52.a4 Kg7 53.d6 Kf7 54.g6+ hxg6 55.hxg6+ 1-0