Author: John Merlino
Date: 12:37:04 01/16/04
Go up one level in this thread
On January 16, 2004 at 14:47:41, Mikael Bäckman wrote: > >What say your engines? How long to avoid Nxc7?? > >[D]r1b1k1nr/pppp1ppp/2n5/1Nb5/4P2q/8/PPP2PPP/RNBQKB1R w KQkq - 0 6 am Nxc7 Chessmaster 9000, SKR personality on a P4-2.4, gives up Nxc7 in about 0.1 seconds: Time Depth Score Positions Moves 0:00 1/3 0.39 2993 6.Nxc7+ Kf8 7.Qe2 Nd4 8.Qd3 0:00 1/4 -0.15 10021 6.Nxc7+ Kd8 7.Bg5+ Qxg5 8.Nxa8 Qf6 9.Qd2 Qxb2 0:00 1/4 0.32 14068 6.Qf3 Kd8 7.Bf4 d6 8.Nd2 0:00 1/5 0.18 29279 6.Qf3 Kd8 7.Qf4 Qxf4 8.Bxf4 d6 9.Nd2 0:00 1/5 0.21 35447 6.Qe2 Qd8 7.Be3 Bxe3 8.Qxe3 d6 0:00 1/6 0.17 73197 6.Qe2 Kd8 7.N1c3 d6 8.Be3 Bg4 0:00 1/6 0.42 124343 6.Qf3 Bb6 7.N1c3 Nf6 8.Bf4 O-O 9.Nxc7 0:01 1/7 0.19 281032 6.Qf3 Kd8 7.Be2 Nf6 8.Bf4 d6 9.Nd2 Be6 0:04 1/8 0.26 738951 6.Qf3 Kd8 7.Be2 a6 8.Qf5 Qe7 9.Bg5 Nf6 10.Bxf6 gxf6 0:12 1/9 0.23 2198725 6.Qf3 Kd8 7.Be3 Ne5 8.Qe2 d6 9.Bxc5 dxc5 10.Nd2 Bg4 11.Qe3 0:31 1/10 0.15 5804605 6.Qf3 Kd8 7.N1c3 a6 8.Qf5 Be7 9.Na3 Nh6 10.Qf4 Qxf4 11.Bxf4 1:38 1/11 0.29 18549703 6.Qf3 Kd8 7.Be3 Ne5 8.Qe2 d6 9.Bxc5 dxc5 10.Nd2 Ne7 11.O-O-O Bd7 12.Nc3 >Some engines have problems with this successor position after Nxc7+ Kd8 Bg5+ >Qxg5 Nxa8 Nf6 f3. > >[D]N1bk3r/pp1p1ppp/2n2n2/2b3q1/4P3/5P2/PPP3PP/RN1QKB1R b KQ - 0 9 bm Nxe4 CM9000_SKR needs 9 seconds to play Nxe4: Time Depth Score Positions Moves 0:00 1/3 -1.68 3369 9...Qe3+ 10.Be2 Qf2+ 11.Kd2 Be3+ 12.Kd3 Ne5+ 13.Kc3 Qxg2 0:00 1/4 -1.94 12531 9...Qe3+ 10.Be2 Qf2+ 11.Kd2 Be3+ 12.Kd3 Bf4 13.c3 Qxg2 0:00 1/5 -1.57 65923 9...Qe3+ 10.Be2 Qf2+ 11.Kd2 Be3+ 12.Kd3 b6 13.c4 Ba6 14.g3 0:01 1/6 -1.69 212921 9...Qe3+ 10.Be2 Qf2+ 11.Kd2 Be3+ 12.Kd3 Nh5 13.g3 Bc1 14.c3 Bxb2 0:03 1/7 -1.71 665392 9...Qe3+ 10.Be2 Qf2+ 11.Kd2 Be3+ 12.Kd3 d5 13.c3 dxe4+ 14.fxe4 Bd7 15.Rf1 Ne5+ 16.Kc2 Qxg2 0:08 1/8 -1.94 1972941 9...Qe3+ 10.Be2 Qf2+ 11.Kd2 Be3+ 12.Kd3 Nh5 13.Kc3 Qxg2 14.Bc4 Nf4 15.Re1 0:09 1/8 -2.09 2199797 9...Nxe4 10.fxe4 Qh4+ 11.Kd2 Qf4+ 12.Kc3 Qe5+ 13.Kd2 Qxb2 14.Nc3 Bb4 15.Bd3 Qxc3+ 16.Ke2 0:16 1/9 -2.34 3852247 9...Nxe4 10.fxe4 Qh4+ 11.Kd2 Qf4+ 12.Kc3 Qe5+ 13.Kd2 Qxb2 14.Nc3 Bb4 15.Qf3 Qxa1 16.Qg3 Bxc3+ 17.Qxc3 0:42 1/10 -2.11 10778791 9...Nxe4 10.fxe4 Qh4+ 11.Kd2 Qf4+ 12.Kc3 Qe5+ 13.Kd2 Qxb2 14.Nc3 Bb4 15.Bd3 Qxc3+ 16.Ke2 d5 17.exd5 2:31 1/11 -2.34 38773261 9...Nxe4 10.fxe4 Qh4+ 11.Kd2 Qf4+ 12.Kc3 Qe5+ 13.Kd2 Qxb2 14.Nc3 Bb4 15.Qf3 Qxa1 16.Qg3 Bxc3+ 17.Qxc3 jm
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