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Subject: Re: Pawn ending === N.Grigoriev,1938 [test position]

Author: Ed Schröder

Date: 11:29:50 05/03/02

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On May 03, 2002 at 12:50:07, José Antônio Fabiano Mendes wrote:

>     Pawn ending === N.Grigoriev,1938 [test position]
>     [D]k7/8/1p6/p1p5/2P4K/8/PP6/8 w
>       Solution ==> 1. a4 Kb7 2. Kh5!!  when White approaches using
>                                corresponding squares which are as follows:
>                                c6, c8 = g5 ; c7 = g6 ; d7 = f6 ; d8 = f5.
>       Source ==> "British Chess Magazine", October 1986, page 471

7 seconds to see 1.a4 and 2.h5, 13 seconds to see it has winning chances
(+2.xx), 30 plies and 2:33 to see white wins, score 5.xx

Ed

===================================================================

00:00:06.9	0,15	22	5505555	Kg5 a4 Kf4 Kb7 Kf5 Kc6 Ke5 a3
00:00:07.9	0,18	22	5728809	a4 Kb7 Kh5 Kc6 Kg5 Kd6 Kf5 Kd7
00:00:08.0	0,21	23	6755574	a4 Kb7 Kh5 Kc6 Kg5 Kd6 Kf5 Kc7
00:00:10.4	0,21	24	8822477	a4 Kb7 Kh5 Kc6 Kg5 Kd6 Kf5 Kd7
00:00:13.4	1,82	25	12712636	a4 Kb7 Kh5 Kc6 Kg5 Kd6 Kf5 Ke7
00:00:17.9	2,60	26	17282192	a4 Kb7 Kh5 Kc6 Kg5 Kd6 Kf5 Ke7
00:00:19.9	2,59	27	19571455	a4 Kb7 Kh5 Kc6 Kg5 Kd6 Kf5 Ke7
00:00:25.9	2,44	28	26278928	a4 Kb7 Kh5 Kc6 Kg5 Kd6 Kf5 Ke7
00:00:40.7	2,42	29	42839274	a4 Kb7 Kh5 Kc6 Kg5 Kd6 Kf5 Ke7
00:02:33.6	5,24	30	164938857	a4 Kb7 Kh5 Kc6 Kg5 Kd6 Kf5 Ke7

Rebel XP (alpha), A1400



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