Author: Uri Blass
Date: 12:41:59 10/28/01
Go up one level in this thread
On October 28, 2001 at 13:26:33, James T. Walker wrote: >On October 28, 2001 at 12:11:29, Uri Blass wrote: > >>On October 28, 2001 at 12:04:13, James T. Walker wrote: >> >>>Here is what Crafty 18.12 says: >>> >>>[D]3k4/8/1p3K2/8/4P1p1/6P1/7P/8 b - - 0 1 >>> >>>Analysis by Crafty 18.12: >>> >>>1...Kd7 2.e5 >>> ² (0.53) Depth: 1/2 00:00:01 >>> ± (0.96) Depth: 2/2 00:00:01 >>>1...b5 2.Ke5 Kc7 3.Kd5 Kb6 4.e5 b4 >>> ² (0.54) Depth: 2/2 00:00:01 >>> ² (0.66) Depth: 7/10 00:00:01 4kN >>>1...Kc7 2.e5 b5 3.e6 b4 4.e7 Kd7 5.Kf7 b3 6.e8Q+ >>> ² (0.46) Depth: 7/10 00:00:01 7kN >>> +- (9.10) Depth: 8/12 00:00:01 16kN, tb=1 >>>1...b5 2.Kf7 b4 3.e5 >>> ± (1.39) Depth: 8/12 00:00:01 26kN, tb=1 >>>1...Kd7 2.Kf7 Kd6 3.Kf6 Kd7 >>> ± (1.03) Depth: 8/12 00:00:01 32kN, tb=6 >>> = (0.00) Depth: 11/17 00:00:01 106kN, tb=58 >>>1...Ke8 2.Ke6 b5 3.Kd5 b4 4.Kc4 >>> = (-0.15) Depth: 11/17 00:00:01 132kN, tb=68 >>> +- (2.64) Depth: 12/19 00:00:01 259kN, tb=151 >>>1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 Kf7 5.Kc5 Ke6 6.Kxb5 Kd5 7.e6 Kd6 8.Kc4 Ke7 >>>9.Kd5 >>> = (0.00) Depth: 12/19 00:00:01 333kN, tb=251 >>> +- (3.79) Depth: 16/27 00:00:35 29779kN, tb=2526 >>>1...b5 2.Ke5 Kc7 3.Kd5 Kb6 4.e5 b4 5.e6 Kc7 6.Kc4 Kd6 7.Kxb4 Kxe6 >>> +- (3.23) Depth: 16/27 00:00:38 32507kN, tb=3093 >>> +- (#30) Depth: 23/45 00:04:23 227633kN, tb=40595 >>> >>>I believe the mate in 30 is correct. >> >>Note that my yace did not use all the tablebases(it used the important KPP vs KP >>but it did not use other tablebases that may be important(for example KPPP vs K) >> >>Uri > >Hello Uri, >I gave the position to Chess Tiger 14 and it says after 1... Kd7 it is mate in >23. So I made the move 1....b5 and Chess Tiger again says mate in 23 so I guess >the mate in 30 is not correct either. I have all 3/4/5 man tablebases. >Jim Hello Jim, Here is the output of yace after learning that 1...b5 is mate in at most 30 against itself(I do not understand the -1 depth and I guess that this problem is a result of the fact that yace is not a native chessbase engine and I used it as a chessbase engine) I believe that it is mate in at most 30 I doubt if tiger is correct when it says mate in 23 because I remember at least one case said mate in some moves when the number of moves was not correct. I think that the right test is to see if tiger can win other prorams in at most 23 moves. New position 3k4/8/1p3K2/8/4P1p1/6P1/7P/8 b - - 0 1 Analysis by Yace 0.99.56: 1...Ke8 2.Ke6 Kf8 3.Kd7 b5 4.e5 b4 5.e6 b3 6.e7+ Kf7 +- (9.46) Depth: -1 00:00:00 61kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kf5 b4 5.h4 gxh3 6.e6 h2 7.e7 h1Q 8.Kg4 +- (9.36) Depth: -1 00:00:00 61kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 b4 5.Kc4 Ke7 6.Kxb4 +- (2.51) Depth: -1 00:00:00 61kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 b4 5.Kc4 b3 6.Kc3 Ke7 7.Kxb3 +- (2.45) Depth: -1 00:00:00 61kN 1...Kd7 2.e5 Kc6 3.e6 Kc5 4.e7 b5 +- (2.85) Depth: -1 00:00:00 61kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 Kd8 5.Kc5 b4 6.Kxb4 Ke8 7.e6 +- (3.37) Depth: -1 00:00:00 61kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 Kd8 5.Kc5 b4 6.Kxb4 Ke8 7.Kc4 Kd7 8.Kb5 Ke7 9.e6 Ke8 10.e7 Kf7 11.Kc4 +- (3.37) Depth: -1 00:00:01 285kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd7 b5 5.e6 Kg8 6.e7 Kg7 7.e8Q Kf6 +- (3.77) Depth: -1 00:00:01 285kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 b4 5.Kc4 b3 6.h4 gxh3 7.Kd5 Ke7 8.Kc6 h2 9.g4 h1Q+ +- (9.78) Depth: -1 00:00:02 546kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 Ke7 5.Kc5 Ke8 6.Kxb5 Ke7 +- (10.18) Depth: -1 00:00:02 546kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd7 b5 5.e6 b4 6.e7+ Kg7 7.e8Q b3 8.Kd6 b2 9.Qe5+ Kf7 +- (11.09) Depth: -1 00:00:03 865kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd5 Kf7 5.Kc6 Ke6 6.Kxb6 Kf5 7.e6 Ke4 8.e7 Kf3 9.e8Q Kg2 10.Qe4+ Kxh2 11.Qxg4 +- (11.23) Depth: -1 00:00:06 1835kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd5 b5 5.Kc5 b4 6.Kxb4 Ke8 +- (11.63) Depth: -1 00:00:08 2398kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd5 Kg7 5.Kc6 Kg6 6.e6 Kf5 7.e7 Ke4 8.Kxb6 Kf3 9.e8Q Kg2 10.Qh5 Kf3 11.Qf5+ Kg2 +- (11.78) Depth: -1 00:00:18 4918kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd7 Kf7 5.e6+ Kg7 6.e7 Kg6 +- (12.18) Depth: -1 00:00:21 5892kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd7 Kg7 5.e6 Kf6 6.e7 Ke5 7.e8Q+ Kd4 8.Kc6 Kd3 9.Kxb6 Kc4 10.Kc6 Kd4 +- (12.66) Depth: -1 00:00:31 9133kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd6 Kf7 5.e6+ Kf6 6.e7 Kf7 7.Kd7 b5 8.e8Q+ Kg7 9.Ke6 b4 +- (12.87) Depth: -1 00:00:48 15687kN 1...Kd7 2.e5 Ke8 3.Ke6 Kd8 4.Kd6 Kc8 5.e6 Kb7 6.e7 Kb8 +- (13.27) Depth: -1 00:00:58 18447kN 1...Kd7 2.e5 Kc7 3.Kf7 Kc6 4.e6 Kd5 5.e7 Ke4 6.e8Q+ Kf3 7.Qb5 Kg2 8.Qxb6 Kxh2 9.Qf2+ Kh1 10.Qf1+ Kh2 11.Kf6 Kxg3 12.Kg5 +- (14.73) Depth: -1 00:01:07 20177kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd6 Kf7 5.e6+ Kg7 6.e7 Kf7 7.Kd7 b5 8.e8Q+ Kg7 9.Ke6 b4 10.Kd5 Kh7 +- (#37) Depth: -1 00:01:07 20177kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd7 Kg7 5.e6 Kf6 6.e7 Ke5 7.e8Q+ Kd5 8.Ke7 Ke5 9.Kf7+ Kd4 10.Kf6 Kd3 +- (#36) Depth: -1 00:01:55 38806kN 1...Kd7 2.e5 Ke8 3.Ke6 Kf8 4.Kd6 Ke8 5.Kc6 Kf8 6.Kxb6 Kg7 7.e6 Kg6 8.e7 Kg7 9.e8Q Kf6 +- (#34) Depth: -1 00:03:35 84640kN 1...Ke8 2.Ke6 Kf8 3.Kd5 Kf7 4.Kc6 Ke7 5.Kb5 Ke8 6.Kxb6 Ke7 7.e5 Kf7 8.e6+ Kg6 9.e7 Kg7 10.e8Q Kf6 11.Kb5 Kg7 12.Qg6+ Kxg6 13.Kc5 Kf6 14.Kd5 Kf5 15.Kd4 Kf6 16.Ke4 +- (#34) Depth: -1 00:04:36 111449kN 1...Ke8 2.Ke6 Kf8 3.Kd6 Kf7 4.e5 Kg6 5.e6 Kf5 6.e7 Ke4 7.e8Q+ Kd3 8.Qc6 b5 9.Qxb5+ Kd2 10.Qd3+ Kc1 11.Kc7 Kb2 +- (#34) Depth: -1 00:04:43 114473kN 1...Ke8 2.Ke6 Kf8 3.e5 Kg7 4.Kd7 Kg6 5.e6 Kf5 6.e7 Ke4 7.e8Q+ Kd4 8.Qb8 b5 9.Kd6 Ke3 10.Qxb5 +- (#31) Depth: -1 00:06:33 152655kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 b4 5.Kc5 b3 6.Kb4 Ke7 7.h4 gxh3 8.Ka5 h2 9.e6 +- (#31) Depth: -1 00:08:40 192881kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 b4 5.Kc4 b3 6.Kxb3 Ke7 7.e6 Kf6 8.e7 Ke6 9.e8Q+ Kf6 10.Kc4 Kg7 11.Qf7+ +- (#31) Depth: -1 00:09:34 209992kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 b4 5.Kc4 b3 6.Kxb3 Ke7 7.e6 Kxe6 8.Kc4 Ke5 9.Kc5 Ke6 10.Kd4 Kf5 11.Kd5 Kf6 12.Ke4 Kg5 13.Ke5 Kg6 14.Kf4 Kh5 15.Kf5 Kh6 16.Kxg4 +- (#30) Depth: 23 00:14:01 310293kN 1...Kd7 2.e5 Ke8 3.Ke6 b5 4.Kd5 Ke7 5.Kc5 Ke6 6.Kxb5 Kd5 7.e6 Kxe6 8.Kc6 Ke5 9.Kc5 Ke6 10.Kd4 Kf5 11.Kd5 Kf6 12.Ke4 Kg5 13.Ke5 Kg6 14.Kf4 Kh5 15.Kf5 Kh6 16.Kxg4 +- (#30) Depth: 24 00:20:12 427356kN (Blass, Tel-aviv 28.10.2001) Uri
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