Author: Joachim Rang
Date: 13:58:13 05/06/03
Go up one level in this thread
It would be too good to be true (german saying zu gut um wahr zu sein) if Baron would solve this position in just a few seconds. On May 06, 2003 at 13:26:35, Richard Pijl wrote: >On May 06, 2003 at 12:26:49, Joachim Rang wrote: > >>On May 05, 2003 at 16:04:21, Richard Pijl wrote: >> >>>On May 05, 2003 at 09:40:48, Enrique Irazoqui wrote: >>> >>>>This is a study that Grigoriev published in 1931 as "white to move and win". I >>>>think it is a mate in 28, but I'm not sure. I find the first move and the >>>>maneuvre beautiful. >>>> >>>>[d]8/1p3p2/1p2p3/7p/2P1P3/k6P/6P1/4K3 w - - 0 1 >>>> >>>>Grigoriev,N - Study >>>>Mate in 28?, 1931 >>>>[El País, 3-5-2003] >>>> >>>>1.e5 Kb4 2.h4 Kxc4 3.g4 Kd4 4.gxh5 Kxe5 5.h6 Kf6 6.h5 b5 7.Kd2 b4 8.Kc2 e5 9.Kb3 >>>>e4 10.Kxb4 e3 11.Kc3 b5 12.Kd3 b4 13.Kxe3 b3 14.Kd3 Kg5 15.h7 b2 16.Kc2 b1Q+ >>>>17.Kxb1 Kxh5 18.h8Q+ Kg5 19.Qg7+ Kf5 20.Qxf7+ Ke4 21.Qe6+ Kf3 22.Qf5+ Ke3 23.Kc2 >>>>Kd4 24.Qe6 Kc5 25.Kc3 Kb5 26.Qd6 Ka5 27.Kc4 Ka4 28.Qb4# 1-0 >>>> >>>>Enrique >>> >>>The Latest Baron (single CPU) version sees e5 within a second and shows a >>>positive score in 3 seconds (AMD 2000+): >>> >> >>I think you either have a bug or should change your evaluation. It is a highly >>conctructed problem and black looses only because of the annoying pawn at f6 and >>because he get into zugzwang. Usually such a position as above are won for black >>very easy. > >You're right. I do have a bug here. The white h-pawn is counted as unstoppable. >Thanks for noting that (I was a bit surprised that Baron did so well in this >position and forgot to look a little better). > >I'll post the results with a corrected version later this evening. > >Richard.
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