(147) Anderson,Mitch (2035) - Anderson,Paul (1954) [A42] CSCC Swiss Colorado Springs (4.1), 26.05.2009 [Fritz 8 (60s)] A42: Modern Defence: Averbakh Variation 1.d4 c6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 Bg4 6.Be3 last book move 6...Qb6 7.Qd2 Bxf3 8.gxf3 Nd7 9.Bh3 e6 10.d5 White wins space 10...Qb4 11.dxe6 Ne5 12.exf7+ Kxf7 13.Qe2 [13.0-0-0 Nxc4 14.a3 Nxd2 15.axb4 Nc4= ] 13...Qxc4 [13...Nxc4!? 14.Rc1 b5-/+ ] 14.Qxc4+ Nxc4 15.0-0-0 Nxe3 16.fxe3 Rd8 17.Rd3 Nh6 18.Rhd1 Ke7 19.Kd2 Nf7 20.f4 Rhe8 21.Ke2 b5 22.b3 h5 23.Kf3 [23.e5 dxe5 24.Bd7 exf4 25.exf4 Rf8 26.Bxc6 Bxc3 27.Re3+ Ne5 28.Rxd8 Kxd8 29.fxe5 b4= ] 23...a5 24.Bg2 Nh6 25.h3 Covers g4 25...Nf7 26.Rc1 Rc8 27.Ne2 c5 28.Nc3 Bxc3 29.Rdxc3 Rc7 30.e5 White gains space 30...Rec8 31.exd6+ Kxd6 [31...Nxd6 32.Bf1+/= ] 32.Kg3 [32.Bf1 b4 33.Rd3+ Ke6+/- ] 32...Ke6 33.e4 Nd6 Black intends c4 34.Kf3 b4 This push gains space 35.R3c2 c4 [>=35...Nb5 36.Rf2 c4= ] 36.e5?? overlooking an easy win [>=36.h4!? Rb8 37.Bh3+ Ke7 38.e5+/- ] 36...Nf5 [>=36...cxb3 and the result of the game is clear: Black will win 37.Rxc7 Rxc7-+ ] 37.Rxc4= Rxc4 38.Rxc4?? ruins a clearly superior position [>=38.bxc4 would save the game 38...Nh4+ 39.Kg3 Nxg2 40.Kxg2= ] 38...Rxc4-+ 39.bxc4 Nh4+ 40.Kf2 Nxg2 41.Kxg2 a4 42.c5 Kd7 43.Kf3 b3 44.axb3 a3 45.Ke4 a2 46.Kd5 a1Q 47.e6+ Kc7 48.b4 Qd1+ [>=48...Qf6 and Black has triumphed 49.b5 Qf5+ 50.Kc4 Qxf4+ 51.Kd3 Qf5+ 52.Kd4 Qxe6 53.b6+ Kb7 54.h4-+ ] 49.Ke5 Qa1+ 50.Kd5 Qf6 51.b5 Qf5+ 52.Kd4 Qxf4+ 53.Kd5 Qf5+ 54.Kd4 Qxe6 0-1