Author: Richard Pijl
Date: 10:26:35 05/06/03
Go up one level in this thread
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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