Author: Vincent Diepeveen
Date: 01:17:07 08/21/01
Go up one level in this thread
On August 20, 2001 at 23:24:02, Robert Hyatt wrote: don't use a laptop. i'm tactical hell stronger and i got a major fail low for g4 at a big depth with a 25 ply line. If you see a 25 ply line for g4, then also say whether it remains playing g4 :) >On August 20, 2001 at 17:05:35, Uri Blass wrote: > >>Here is some analysis of shredder5.32 p200(64 Mbytes hash tables) >> >>Diep blundered in the relevant position by Kc5 when g4 is winning. >>The surprising thing is that Shredder also cannot see g4 in a reasonable time >>and need more than 5 hours on p200 to avoid Kc5 (it probably means that Shredder >>with the best hardware of today cannot avoid Kc5 at tournament time control). >> >>h5 is probably enough to win(I did not analyze it and I may be wrong) but g4 is >>the simplest way to win >> >>I thought that Shredder is better in the endgame than other programs but I doubt >>it after seeing that shredder also does the same mistake that Diep did when Deep >>Fritz has no problem to find the right move with a winning score. >> >>,M - Shredder 5.32 >>2b5/7p/P2k4/1P4p1/2Ppp3/5pP1/1N3K1P/8 b - - 0 1 >> >>Analysis by Shredder 5.32: >> >>1...Bxa6 2.bxa6 >> +- (3.03) Depth: 1/2 00:00:00 >>1...Kc5 2.h4 Kb6 3.hxg5 >> = (-0.18) Depth: 1/2 00:00:00 >>1...Kc5 2.h4 Kb6 3.hxg5 >> = (-0.18) Depth: 1/2 00:00:00 >>1...Kc5 2.h4 Kb6 3.hxg5 >> = (-0.18) Depth: 1/2 00:00:00 >>1...Kc5 2.h4 Kb6 3.hxg5 >> = (-0.18) Depth: 1/2 00:00:00 >>1...Kc5 2.h4 Kb6 3.hxg5 >> = (-0.18) Depth: 4/8 00:00:00 >>1...Kc5 2.h4 Kb6 3.hxg5 >> = (-0.18) Depth: 4/8 00:00:00 >>1...Kc5 2.h4 Kb6 3.hxg5 >> = (-0.18) Depth: 4/8 00:00:00 >>1...Kc5 2.h4 Kb6 3.hxg5 >> = (-0.18) Depth: 4/8 00:00:00 >>1...Kc5 2.Ke1 e3 3.h4 gxh4 4.gxh4 >> = (-0.17) Depth: 4/8 00:00:00 >>1...Kc5 2.Na4+ Kxc4 3.h3 >> ³ (-0.42) Depth: 5/10 00:00:00 >>1...Kc5 2.h3 h6 3.g4 Kb6 >> µ (-0.73) Depth: 5/10 00:00:00 >>1...Kc5 2.g4 e3+ 3.Kxf3 Bb7+ 4.axb7 h6 5.b8Q >> ³ (-0.48) Depth: 6/12 00:00:00 8kN >>1...Kc5 2.g4 Bxg4 3.a7 e3+ 4.Kg3 f2 5.Kxg4 f1Q 6.a8Q >> ³ (-0.40) Depth: 6/12 00:00:00 9kN >>1...Kc5 2.Na4+ Kxc4 3.Nb6+ Kc3 4.Nxc8 Kb3 >> = (-0.15) Depth: 7/14 00:00:00 21kN >>1...Kc5 2.Na4+ Kxc4 3.Nb6+ Kc3 4.Nxc8 Kb3 5.a7 e3+ 6.Kxf3 >> ² (0.35) Depth: 7/14 00:00:00 22kN >>1...Kc5 2.Na4+ Kb4 3.Nb6 Bg4 4.Ke1 e3 5.h4 gxh4 >> ² (0.40) Depth: 7/14 00:00:01 28kN >>1...Kc7 2.Ke1 e3 3.c5 f2+ 4.Kd1 f1Q+ 5.Kc2 Qxb5 >> ² (0.39) Depth: 7/14 00:00:01 45kN >>1...Kc7 2.Ke1 e3 3.c5 f2+ 4.Kd1 f1Q+ 5.Kc2 Qxb5 >> = (0.04) Depth: 7/14 00:00:01 51kN >>1...Kc7 2.c5 Kb8 3.h4 Be6 4.b6 Bb3 5.hxg5 >> = (0.01) Depth: 7/14 00:00:01 56kN >>1...g4 2.Ke1 Kc5 3.a7 Bb7 4.h3 >> = (0.00) Depth: 7/14 00:00:02 66kN >>1...g4 2.Na4 e3+ 3.Kf1 Kc7 4.b6+ Kc6 5.b7 >> ³ (-0.28) Depth: 7/14 00:00:02 69kN >>1...g4 2.Ke1 Kc5 3.Na4+ Kxc4 4.Nb6+ Kxb5 5.Nxc8 Kxa6 6.Nd6 >> ³ (-0.52) Depth: 8/16 00:00:02 91kN >>1...g4 2.Na4 e3+ 3.Kf1 Kc7 4.c5 Kb8 5.Nb6 Be6 6.Ke1 >> ³ (-0.39) Depth: 9/18 00:00:05 192kN >>1...g4 2.Ke1 Kc5 3.Kf1 e3 4.a7 Bb7 5.h3 >> ³ (-0.62) Depth: 10/20 00:00:08 341kN >>1...g4 2.Ke1 Kc5 3.Na4+ Kxc4 4.Nb6+ Kxb5 5.Nxc8 Kxa6 6.Nd6 Ka7 >> ³ (-0.37) Depth: 11/22 00:00:12 504kN >>1...g4 2.Ke1 Kc5 3.Na4+ Kxc4 4.Nb6+ Kxb5 5.Nxc8 Kxa6 6.Nd6 e3 7.Nf5 Kb5 8.Nxd4+ >>Kc4 >> = (-0.25) Depth: 11/22 00:00:13 565kN >>1...h5 2.Na4 Bg4 3.c5+ Ke5 4.Ke1 e3 5.Nb6 f2+ 6.Kf1 d3 7.c6 >> ³ (-0.26) Depth: 11/22 00:00:22 958kN >>1...h5 2.h4 gxh4 3.gxh4 Kc5 4.Na4+ Kb4 5.Nb6 e3+ 6.Kxf3 Bg4+ 7.Kg3 d3 >> ³ (-0.33) Depth: 11/22 00:00:25 1113kN >>1...h5 2.h3 g4 3.hxg4 Bxg4 4.Nd1 Bc8 5.c5+ Kxc5 6.a7 e3+ 7.Kf1 Bb7 8.Nxe3 >> ³ (-0.57) Depth: 12/24 00:01:02 2696kN >>1...Kc5 2.Na4+ Kxc4 3.Nb6+ Kd3 4.Nxc8 e3+ 5.Kxf3 e2 6.Kg4 e1Q 7.Kf5 >> ³ (-0.58) Depth: 12/24 00:01:35 4113kN >>1...Kc5 2.g4 Kb4 3.h3 h6 4.Ke1 Kb3 5.Na4 Kxa4 6.Kf1 >> µ (-0.82) Depth: 12/24 00:01:49 4762kN >>1...Kc5 2.Na4+ Kxc4 3.Nb6+ Kd3 4.g4 Bxg4 5.a7 e3+ 6.Kg3 f2 7.a8Q Kc3 8.Kxg4 e2 >>9.Kxg5 f1Q 10.Qc6+ Kd2 >> ³ (-0.57) Depth: 13/25 00:02:21 6189kN >>1...Kc5 2.Na4+ Kxc4 3.Nb6+ Kd3 4.g4 e3+ 5.Kxf3 Bxg4+ 6.Kg3 Kc2 7.Nc4 Be6 8.Nd6 >> ³ (-0.28) Depth: 13/25 00:02:29 6573kN >>1...h5 2.h3 g4 3.hxg4 Bxg4 4.Nd1 Bc8 5.c5+ Kxc5 6.a7 e3+ 7.Kg1 Bb7 8.Nc3 dxc3 >> ³ (-0.29) Depth: 13/25 00:02:37 6926kN >>1...h5 2.h3 g4 3.hxg4 Bxg4 4.Nd1 Bc8 5.Ke1 Kc5 6.Kd2 Kxc4 >> ³ (-0.63) Depth: 13/25 00:02:51 7581kN >>1...h5 2.h4 gxh4 3.gxh4 Kc5 4.Na4+ Kb4 5.Nb6 e3+ 6.Kxf3 Bxa6 7.bxa6 e2 8.Kxe2 >> ³ (-0.38) Depth: 14/26 00:04:47 12859kN >>1...h5 2.h4 g4 3.Ke1 Kc5 4.Na4+ Kxc4 5.Nb6+ Kxb5 6.Nxc8 Kxa6 7.Nd6 e3 8.Nf5 Kb5 >> ³ (-0.36) Depth: 14/26 00:05:01 13537kN >>1...h5 2.h4 g4 3.Ke1 Kc5 4.Na4+ Kxc4 5.Nb6+ Kxb5 6.Nxc8 Kxa6 7.Nd6 e3 8.Nf5 Kb5 >> ³ (-0.36) Depth: 15/27 00:10:07 26947kN >>1...Kc5 2.Na4+ Kxc4 3.Nb6+ Kd3 4.g4 e3+ 5.Kxf3 Bxg4+ 6.Kxg4 e2 7.a7 e1Q 8.a8Q >>Qe6+ 9.Kxg5 Qg6+ 10.Kh4 Qxb6 11.Qe4+ Kxe4 >> ³ (-0.37) Depth: 15/27 00:11:31 30573kN >>1...Kc5 2.Na4+ Kxc4 3.Nb6+ Kd3 4.g4 e3+ 5.Kxf3 Bxg4+ 6.Kxg4 e2 7.a7 e1Q 8.a8Q >>Qe6+ 9.Kxg5 Qg6+ 10.Kf4 >> ³ (-0.40) Depth: 15/27 00:12:51 33950kN >>1...Kc5 2.Na4+ Kxc4 3.Nb6+ Kd3 4.g4 e3+ 5.Kxf3 Bxg4+ 6.Kxg4 e2 7.a7 e1Q 8.a8Q >>Qe6+ 9.Kxg5 Qxb6 10.Qa3+ >> ³ (-0.51) Depth: 16/28 00:20:54 55485kN >>1...Kc5 2.Na4+ Kxc4 3.Nb6+ Kd3 4.g4 e3+ 5.Kxf3 e2 6.Kf2 Be6 7.a7 Kd2 8.a8Q >> µ (-0.76) Depth: 17/29 00:38:52 103816kN >>1...Kc5 2.g4 Kb4 3.h3 h6 4.Kg3 Bb7 5.axb7 e3 6.b8Q f2 7.c5 f1Q 8.Nd3+ Qxd3 9.c6 >>Qe4 >> µ (-0.76) Depth: 17/29 00:57:35 153424kN >>1...Kc5 2.g4 Kb4 3.h3 h6 4.Kg3 Bb7 5.axb7 e3 6.b8Q f2 7.b6 f1Q 8.Qd6+ Kc3 9.Qa3+ >>Kc2 10.Nd3 Qf2+ 11.Nxf2 e2 >> ³ (-0.51) Depth: 18/30 02:02:04 321943kN >>1...Kc5 2.g4 Kb4 3.h3 h6 4.Kg3 d3 5.c5 Kxc5 6.a7 Bb7 7.a8Q Bxa8 >> ³ (-0.51) Depth: 18/30 02:11:44 347226kN >>1...h5 2.h4 gxh4 3.gxh4 Kc5 4.Na4+ Kxc4 5.Nb6+ Kd3 6.Nd5 Bg4 7.Ke1 e3 8.Nf4+ Kc4 >>9.Nd5 >> ³ (-0.52) Depth: 18/30 05:25:05 844970kN >>1...h5 2.h4 gxh4 3.gxh4 Kc5 4.Na4+ Kxc4 5.Nb6+ Kd3 6.a7 e3+ 7.Kg3 Bb7 8.a8Q Bxa8 >>9.Nxa8 Ke4 >> µ (-0.86) Depth: 18/30 05:47:00 902698kN >>1...g4 2.Ke1 Kc5 3.Na4+ Kb4 4.Nb6 e3 5.Nxc8 d3 6.Kf1 d2 7.a7 >> µ (-0.87) Depth: 18/30 08:19:09 1300076kN >>1...g4 2.Ke1 Kc5 3.Na4+ Kb4 4.Nb6 e3 5.Nxc8 d3 6.a7 f2+ 7.Kf1 d2 8.a8Q d1Q+ >>9.Kg2 >> µ (-1.22) Depth: 18/30 08:24:56 1315417kN >>1...g4 2.Ke1 Kc5 3.Na4+ Kb4 4.Nb2 e3 5.c5 Kxc5 6.Nd3+ Kxb5 7.a7 Bb7 8.a8N Bxa8 >> -+ (-3.31) Depth: 18/30 09:34:07 1490700kN >>1...g4 2.Ke1 Kc5 3.Na4+ Kb4 4.a7 Bb7 5.Nb6 d3 6.Nd5+ Kxc4 7.Ne3+ Kxb5 8.Nxg4 Kb6 >>9.Kd2 h5 10.Nf2 >> -+ (-3.43) Depth: 19/31 11:30:19 1781143kN >> >>Uri > > >Not sure what is wrong... but in crafty's case, it only plays g4 here, and it >only takes a fraction of a second to find it on my laptop. By the time 13 >plies rolls around the score is -3.51 and getting better and better for black.
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