Author: John Merlino
Date: 12:15:15 05/22/04
Go up one level in this thread
On May 22, 2004 at 04:32:07, Kurt Utzinger wrote: >[D]3r1rk1/2pqnppp/p7/1p1pP2b/nP6/2P2N2/P1B2PPP/R1BQR1K1 w - - 0 18 >Sokolov,A vs Kortschnoj,V (Variation) >Position after 17...Na4? when White wins with 18.Bxh7! >Which program does find this bishop sacrifice? CM_SKR on an AMD 2500 needs 0:04 to find Bxh7+: Time Depth Score Positions Moves 0:00 1/3 0.10 1260 18.Qd3 Bg6 19.Qd2 Bxc2 20.Qxc2 0:00 1/3 0.45 2044 18.Bd2 Nb6 19.Bg5 Nc4 0:00 1/4 0.59 5396 18.Bd2 Qc6 19.Re3 Nb6 20.Qb1 0:00 1/4 0.64 6155 18.Bxa4 bxa4 19.Bg5 Rde8 20.Qd3 Bxf3 21.Qxf3 0:00 1/5 0.64 15969 18.Bxa4 bxa4 19.Bg5 Rde8 20.Qd3 Bxf3 21.Qxf3 0:00 1/6 0.61 47134 18.Bxa4 bxa4 19.Bg5 Rde8 20.Qd3 Qf5 21.Qxf5 Nxf5 0:00 1/7 0.62 120332 18.Bxa4 bxa4 19.Bg5 Rfe8 20.Qd3 Qb5 21.Rad1 Qxd3 22.Rxd3 0:01 1/8 0.56 288568 18.Bxa4 bxa4 19.Bg5 Rde8 20.Qd3 Ng6 21.Rad1 h6 22.Bc1 Bxf3 23.Qxf3 Rxe5 24.Rxe5 Nxe5 25.Qxd5 Qxd5 26.Rxd5 0:03 1/9 0.56 823087 18.Bxa4 bxa4 19.Bg5 Rde8 20.Qd3 Ng6 21.Rad1 h6 22.Bc1 Bxf3 23.Qxf3 Rxe5 24.Rxe5 Nxe5 25.Qxd5 Qxd5 26.Rxd5 0:04 1/9 0.76 1048838 18.Bxh7+ Kxh7 19.e6 Qc6 20.Ng5+ Kg6 21.g4 Bxg4 22.Qxg4 f5 23.Qg3 Qxc3 24.Nf3+ Kh7 0:07 1/10 0.73 1811320 18.Bxh7+ Kxh7 19.e6 Qc6 20.Ng5+ Kg6 21.g4 Bxg4 22.Qxg4 f5 23.Qg3 f4 24.Bxf4 Qxc3 0:32 1/11 1.06 8192609 18.Bxh7+ Kh8 19.Bc2 Nxc3 20.Qd3 Ne4 21.Nd4 Bg6 22.e6 fxe6 23.Qh3+ Kg8 24.Qxe6+ Rf7 25.Bf4 Qxe6 26.Nxe6 1:08 1/12 1.02 17355498 18.Bxh7+ Kh8 19.Bc2 Nxc3 20.Qd3 Ne4 21.Ng5 Bg6 22.e6 fxe6 23.Qh3+ Kg8 24.Qxe6+ Kh8 25.Qxa6 Rf6 >[D]8/2p3pp/8/1RrkP3/8/3K4/6PP/8 w - - 0 42 >Sokolov,A vs Kortschnoj,V >Position after 41...Rxc5 >The exchange of rooks leads to a lost pawn end game for White >Which program does avoid 42.Rxc5? Isn't this position lost for White anyway? Crafty's "improvement" to Rb8 still had a losing score. The King does not see anything better than Rxc5 after more than 10 minutes: Time Depth Score Positions Moves 0:00 1/3 0.71 845 42.Rxc5+ Kxc5 43.Ke4 c6 44.e6 Kd6 0:00 1/4 0.57 2369 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.Kd4 Kd7 45.Kd5 c6+ 46.Kd4 0:00 1/5 0.50 4192 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.e6 Kd6 45.Kf5 c5 0:00 1/6 0.46 8337 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.h4 Kd7 45.Kd5 c6+ 46.Kd4 Ke6 47.g4 0:00 1/7 0.24 19461 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.h4 Kd7 45.g4 Ke6 46.g5 c5 47.h5 0:00 1/8 0.22 34939 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.h4 Kd7 45.Kf5 c5 46.g4 c4 47.e6+ Ke7 0:00 2/9 0.15 48205 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.h4 Kd7 45.g4 Ke6 46.g5 c5 47.h5 c4 48.Kd4 0:00 3/10 0.05 68889 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.h4 Kd7 45.g4 Ke6 46.Kd4 c5+ 47.Kxc5 Kxe5 48.h5 g6 0:00 4/11 0.01 110199 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.h4 Kd7 45.g4 Ke6 46.Kd4 c5+ 47.Kxc5 Kxe5 48.g5 h6 49.g6 0:00 5/12 0.05 250041 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.g4 Kd7 45.h4 Ke6 46.Kd4 c5+ 47.Kxc5 Kxe5 48.g5 h6 49.g6 h5 0:01 6/13 0.07 574063 42.Rxc5+ Kxc5 43.Ke4 Kc6 44.g4 Kd7 45.h4 Ke6 46.g5 c5 47.h5 c4 48.Kd4 c3 49.Kxc3 Kxe5 50.Kd3 0:03 7/14 0.00 1424025 42.Rxc5+ Kxc5 43.Ke4 h5 44.g3 Kc6 45.h3 Kd7 46.g4 hxg4 47.hxg4 Ke6 48.g5 c5 49.g6 c4 50.Kd4 c3 51.Kxc3 Kxe5 0:09 8/15 0.00 3954708 42.Rxc5+ Kxc5 43.Ke4 h5 44.g3 Kc6 45.h3 Kd7 46.g4 hxg4 47.hxg4 Ke6 48.g5 c5 49.g6 c4 50.Kd4 c3 51.Kxc3 Kxe5 0:24 9/16 -0.03 10102940 42.Rxc5+ Kxc5 43.Ke4 h5 44.g3 Kc6 45.h3 Kd7 46.g4 hxg4 47.hxg4 Ke6 48.g5 c6 49.Kd4 Kf5 50.Kc5 Kxe5 51.Kxc6 g6 52.Kc5 1:54 10/17 -0.13 45494456 42.Rxc5+ Kxc5 43.Ke4 h5 44.g3 Kc6 45.h3 Kd7 46.Kf5 c5 47.g4 c4 48.Ke4 hxg4 49.hxg4 Ke6 50.Kd4 g5 51.Kxc4 Kxe5 52.Kd3 9:09 11/18 -0.15 207691869 42.Rxc5+ Kxc5 43.Ke4 h5 44.g3 Kc6 45.h3 Kd7 46.Kf5 c5 47.g4 h4 48.g5 Ke7 49.Ke4 Ke6 50.g6 c4 51.Kd4 c3 52.Kxc3 Kxe5 jm
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