Chinese Championship 2011

(1) Hou Yifan (2602) - Yu Yangyi (2652) [B30]
ch-CHN 2011 Xinghua Jiangsu CHN (6), 04.04.2011

1.e4 c5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 g6 5.h3 Bg7 6.e5 Ng8 7.Bxc6 dxc6 8.d3 Nh6 9.g4 0-0 10.Qe2 [10.Be3 f5 11.g5 Nf7 12.Bf4 Qb6 13.b3 Nd8 14.Ne2 Be6 15.c4 Bf7 16.Qd2 Ne6 17.0-0 Rfd8 18.Bg3 a5 19.Nf4 a4 20.Qc2 Rd7 21.Rfd1 Qa7 22.Rab1 axb3 23.axb3 Qa2 24.Rb2 Qa5 25.Nxe6 Bxe6 26.Bf4 1/2-1/2 (43) Kasimdzhanov,R (2672)-San Segundo Carrillo,P (2570)/San Sebastian 2009/CBM 132 (43)] 10...f6 11.Be3 Nf7 12.0-0-0 fxe5 13.Nd2! Instead of the pawn grab with Bxc5, Hou prefers to immediately exploit the beautiful e4 square that is practically screaming to have a knight placed on it. 13...b6 14.h4 h6 15.Nde4 Be6 16.Rdg1 a5 17.Kb1 a4 18.a3 Ra7 19.Qd2 Kh8 20.f3 c4 21.Ng5!? This is not winning, but it certainly puts Black on the defensive, forcing him to play very precisely to avoid being evicted from the battlefield. 21...hxg5 22.Qh2! Kg8 23.hxg5 Nh8 24.Qh7+ Kf7 25.f4! [The engines in their mathematical innocence suggest 25.dxc4?! Bxc4 26.Re1 instead of the line played, but Yifan's move (second best according to them) is unquestionably the most problematic for Black, and therefore best in a tournament game.] 25...cxd3 26.f5 dxc2+ 27.Kc1 Bc4 28.Rh2 Rg8 29.f6! exf6 30.gxf6 Ke8 Pretty much forced. [30...Qxf6 loses the queen to 31.Rf2 ; 30...Kxf6 also loses the queen to 31.Bg5+ and if 31...Kxg5? 32.Qh4+ Kf4 33.g5+ Kf5 34.Qg4# ] 31.Rd2 Qxf6 32.Ne4 Qe6 33.Nd6+ Kf8 34.Nxc4 Nf7 35.Bxb6 Qxc4 Resigned?? [35...Qxc4 Astonishingly, it would seem that Yangyi failed to see the saving sequence. "Astonishingly" because he is no slouch in tactics, and you don't resign unless you are sure there is no hope. After 36.Rxc2 (36.Bxa7? *loses* to 36...Bh6! 37.g5 Rg7! and the queen is trapped!) 36...Qf4+ 37.Kb1 Re7 38.Bc5 Bf6 The game is afoot.] 1-0

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