Author: Bernhard Bauer
Date: 23:47:37 05/03/04
Go up one level in this thread
On May 03, 2004 at 22:39:09, Mike Byrne wrote: >On May 03, 2004 at 18:09:29, Mike Byrne wrote: > >>On May 03, 2004 at 07:34:41, Chris Taylor wrote: >> >>>On May 03, 2004 at 03:41:19, Bernhard Bauer wrote: >>> >>>>The following position is from BT2630, pos24. >>>>Old versions of Crafty solved it fast. >>>> >>>>[D]R7/3p3p/8/3P2P1/3k4/1p5p/1P1NKP1P/7q w >>>> >>>>Is this position special? >>>> >>>>Kind regards >>>>bernhard >>> >>>All ChessBase versions of Crafty. >>>Plenty of Hash! >>>AMD 3000 Also browsing at the same time. >>>Truncated to where the move shows itself >>> >>>New game >>>R7/3p3p/8/3P2P1/3k4/1p5p/1P1NKP1P/7q w - - 0 1 >>> >>>Analysis by Crafty 14.12: >>> >>>1.g6 hxg6 2.Ra1 Qg2 3.Rg1 Kxd5 4.Rxg2 hxg2 5.Nf3 Kc4 6.Ng1 d5 7.Kf3 d4 8.Kxg2 d3 >>>9.Nf3 >>> ± (1.29) Depth: 15 00:04:40 95891kN >>> +- (1.64) Depth: 15 00:04:46 301324kN >>> >>>(Taylor, Notts 03.05.2004) >>> >>> >>>New game >>>R7/3p3p/8/3P2P1/3k4/1p5p/1P1NKP1P/7q w - - 0 1 >>> >>>Analysis by Crafty 15.20: >>> >>>1.g6 hxg6 2.Ra1 Qg2 3.Rg1 Kxd5 4.Nf3 Ke4 5.Rxg2 hxg2 6.Ng5+ Kf4 7.Nh3+ Kg4 8.Ng1 >>>d5 9.f3+ Kf5 10.Nh3 >>> ± (1.03) Depth: 10 00:00:12 12498kN >>> +- (3.25) Depth: 15 00:01:51 128572kN >>> >>>(Taylor, Notts 03.05.2004) >>> >>> >>>New game >>>R7/3p3p/8/3P2P1/3k4/1p5p/1P1NKP1P/7q w - - 0 1 >>> >>>Analysis by Crafty 16.15: >>> >>>1.g6 hxg6 2.Ra1 Qg2 3.Rg1 Kxd5 4.Rxg2 hxg2 5.Nf3 Ke4 6.Ng1 d5 7.f3+ Kd4 8.h4 >>> ± (1.05) Depth: 10 00:00:06 6018kN >>> ± (1.35) Depth: 14 00:00:33 38393kN >>> >>>(Taylor, Notts 03.05.2004) >>> >>>New game >>>R7/3p3p/8/3P2P1/3k4/1p5p/1P1NKP1P/7q w - - 0 1 >>> >>>Analysis by Crafty 18.07: >>> >>>1.g6 hxg6 2.Ra1 Qg2 3.Rg1 Kxd5 4.Rxg2 hxg2 5.Nf3 Kc4 6.Ne5+ Kd4 7.Nf3+ Ke4 >>> ± (0.77) Depth: 10/23 00:00:04 4586kN >>> ² (0.66) Depth: 11/27 00:00:05 5074kN >>>1.Ra1 Qg2 2.Ra5 Ke5 3.Rb5 Kf4 4.Rxb3 Qxd5 5.Rxh3 Qe6+ 6.Re3 Qa6+ 7.Ke1 Kxg5 >>> ² (0.69) Depth: 11/27 00:00:06 7204kN >>>1.Ra5 Ke5 2.Nf3+ Kf4 3.Ra4+ Kf5 4.Rb4 Qb1 5.Rxb3 Qe4+ 6.Kd2 Qxd5+ 7.Rd3 Qa2 >>>8.Rxd7 Qxb2+ 9.Ke3 Qb3+ 10.Rd3 Qe6+ 11.Kd4 >>> ± (0.76) Depth: 11/27 00:00:07 8829kN >>> ² (0.52) Depth: 13/29 00:00:16 19795kN >>>1.Ra1 Qg2 2.Nf3+ Ke4 3.Ra4+ Kxd5 4.Rd4+ Kc6 5.Rc4+ Kb5 6.Rc3 Kb4 7.Rd3 h6 8.gxh6 >>>Qg6 9.Rd4+ Kc5 >>> ² (0.63) Depth: 13/29 00:00:23 28646kN >>>1.g6 hxg6 2.Ra1 Qg2 3.Rg1 Kxd5 4.Rxg2 hxg2 5.Nf3 Ke4 6.Ng1 d5 7.f3+ Ke5 8.Kd3 >>> ± (0.78) Depth: 13/29 00:01:41 127477kN >>> ± (1.18) Depth: 14/35 00:01:53 141927kN >>> >>>(Taylor, Notts 03.05.2004) >>> >>>New game >>>R7/3p3p/8/3P2P1/3k4/1p5p/1P1NKP1P/7q w - - 0 1 >>> >>>Analysis by Crafty 19.12: >>> >>>1.g6 hxg6 2.Ra1 Qg2 3.Rg1 Kxd5 4.Rxg2 hxg2 5.Nf3 Kc4 6.Ng1 d5 7.Kf3 Kd3 8.Kxg2 >>>Kc2 9.Kf3 Kxb2 >>> ² (0.63) Depth: 16/36 00:30:04 2029063kN, tb=22 >>> ² (0.64) Depth: 16/36 00:30:33 2066597kN, tb=22 >>> >>>(Taylor, Notts 03.05.2004) >> >>I think Ra1 is the move and non chessbase Crafty sees it on machine. I tested >>it this morning. I'm at work right now without access to crafty or any other >>chess program. > > >it switch to g6! after 75 minutes with 1+ score -- what do other programs say? As you can read above Craft15.20 says +3.25 after 1:51 Ruffian says +2.7 after 2:05 on an AMD 1.8 GHz machine. BTW this position is from test suite BT2630 and has been solved quickly by 'every program'. Perhaps Bob has an answer. regards bernhard
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