Schaakcomputers

1.d4 d5 2.c4 dxc4 3.e4 e5 4.Bxc4 Qxd4 5.Qb3 Qxe4+ 6.Ne2 Qg6 7.O-O Be7 8.Be3 Nf6 9.Nbc3 {2 pawns ahead for black, now c6 prevents Nb5} O-O? 10.Nb5 c6? {Nc6 and still advantage} 11.Nc7 Bf5?? {b5 and black is still in the game} 12.Qxb7 Bh3 {game lost for black} 13.Ng3 Qg4 14.Nxa8 Qxc4 15.Qxe7 Nbd7 16.Nc7 Qa4 17.Qd6 Rc8 18.b4 Be6 19.Nxe6 fxe6 20.Qxe6+ Kh8 21.Nf5 Qxb4 22.Nd6{1–0}

1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 Be6 6.Nbd2 Qd7 7.Bg2 Nge7 8.O-O O-O-O 9.Qa4 Ng6 10.Ng5 Ngxe5 11.Nxe6 Qxe6 12.Bd5 Qh6? {Qg4} 13.Nf3 Nxf3+ 14.Bxf3 Qe6 15.Bxc6 Qxc6 16.Qxa7 Qxc4? {Be7} 17.Qa8+ Kd7 18.Qxb7 Qxe2?? {Bd6, now the game is lost} 19.Bf4 Bd6 20.Bxd6 Kxd6 21.Rac1 c5 22.Qb6+ Kd7 23.Qxc5 d3 24.Rfe1 Ke8 25.Rcd1 Qe6 26.Qb5+ Kf8 27.Rxe6 fxe6 28.Rxd3 Rxd3 29.Qxd3 Ke7{1–0}

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 e6 5.Nf3 Nbd7 6.Bd3 Bd6 7.e4 dxe4 8.Nxe4 Nxe4 9.Bxe4 Nf6 10.Bc2 c5 11.O-O O-O 12.Bg5 h6 13.Bxf6 Qxf6 14.Qd3 g6 15.Qa3 b6 16.Be4 Rb8 17.Rae1 Rd8 18.d5 b5 19.b3 bxc4 20.bxc4 Rb4 21.Rc1 Bf4 22.Rc2 exd5 23.Bxd5 Qa6 24.Qxa6 Bxa6 25.Re1 Kf8 26.g3 Bc7 27.Kg2 Rd7 28.h3 Kg7 29.Rd2 Kf6 30.Rd3 Bb7 31.Nd2 Bxd5+ 32.Rxd5 Rxd5 33.cxd5 Rd4 34.Ne4+ Ke7 35.Nxc5+ Kd6 36.Ne4+ Kxd5 37.Nf6+ Kc6 38.Re7 Rd2 39.Ng8 Rxa2 40.Rxf7 {Till now not one moment of a bad move. But…} Bd8? {Oops, now ….a5 or Bb6 was urgent} 41.Nxh6 Kb5 42.Ng4 Ra6? {….a5} 43.Kf3 Ra3+ 44.Ke4 Ra4+ 45.Kd5 Ra2 46.Ne5 Bb6 47.Nxg6 Bxf2 48.g4 Rd2+ 49.Ke4 a5 50.Ne5 a4 51.Nd3? {Rb7+} Bb6 52.Rf5+ Kc4 53.Ne5+ Kb3 54.Rf3+ Kb4 55.Rf6 Rd4+ {Equal game again} 56.Kf5 Kb5 57.Nf3 Rd8 58.Re6 a3 59.Re5+ Kb4 60.Re2?? {Mistake, but far too deep: Better 60.g5 Rf8+ 61.Kg4 a2 62.Re1 etc.} Ra8? {Also wrong, but still a slight advantage for black. Winning for black: 60...Rf8+ 61.Kg6 Rxf3 62.h4 Rf4 63.Kh5 Kb3 64.Kg5 Rf2} 61.Re1 a2 62.Ra1 Kb3 63.h4 Kb2 64.Rxa2+ Rxa2 {What a position! But the pawns are strong} 65.g5 Kb3 66.g6 Ra8 {Equal game!} 67.h5 Rf8+ 68.Ke4 Rxg8 69.Kf5 Be3 70.Ke6 Kc4 71.Kf7 Rh8? {Wrong place, must be Ra8} 72.g7 Rd8 73.g8Q? {Ne5, now it is equal} Rxg8 74.Kxg8 Kd5 75.Nh4 Bg5 76.Ng2 Ke4 77.Kg7 Kf3 {Oops! Better Kf5} 78.Kg6 Bd2 79.Nh4+ Kg4? {….Ke4} 80.Nf5 Kf4?? {Game over ….Bf5} 81.h6 Bc3 82.Ng7 Ke4 83.h7 Bxg7 84.Kxg7 Ke5 85.h8Q{1–0}

1.d4 d5 2.Nc3 Nf6 3.Bf4 c5 4.Nf3 e6 5.a3 Nc6 6.e3 Be7 7.Qd2 O-O 8.O-O-O Nh5 9.Bg3 Bd7 10.Be2 cxd4 11.Nxd4 Nxd4 12.exd4 Nf6 13.h4 Rc8 14.Be5 Ne4 15.Nxe4 dxe4 16.Qe3 Ba4 17.Rd2 Bc6 18.h5 f6 19.Bf4 Qd5 20.Kb1 Rfd8 21.c4 Qa5 22.Bd1 e5 23.dxe5 fxe5 24.Rxd8+ Rxd8 25.Bg3 Rd2 {good game from white so far} 26.Bxe5? {first mistake, with the intention that the black queen must cover the rook. 26.Bc2 was solid} Rxd1+ 27.Rxd1 Qxe5 {two bishops against a rook, that is too much} 28.Qxa7 Qxh5 29.Qd4 Bf6 30.Qd6 Qf5 31.Qb8+ Kf7 32.Qc7+ Be7 33.g4 Qxf2 34.Qe5 Bf6 35.Qc7+ Kg6 36.Rd4 Bxd4 {0–1}