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Subject: Re: testposition endgame

Author: James T. Walker

Date: 09:38:38 02/01/03

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On February 01, 2003 at 11:42:05, Volker Kniest wrote:

>On February 01, 2003 at 09:38:27, Eduard Nemeth wrote:
>
>>[D]8/8/kb6/2p5/ppP5/1P6/PK6/8 b - - 0 1
>>
>>This is a komposition from me.
>>
>>Which plays Your program? ;-)
>>
>>( 1...a3+ is only a draw )
>>
>>My Chess:
>>
>>http://www.eduardonline.de.vu
>
>
>Hi Eduard,
>
>here ist the analysis result from Ruffian 1.0.1
>
>Ruffian_101  UCI 214 MB:
>T1  00:00  4,55   axb3 axb3
>T1  00:00  4,58   a3 Kc2
>T1  00:00  4,63   Ka5
>T2  00:00  4,59   Ka5 a3
>T2  00:00  4,64   a3 Kc2 Lc7
>T3  00:00  4,54   a3 Kc2 Lc7 Kd3
>T3  00:00  4,61   axb3 axb3 Lc7 Kc2
>T4  00:00  4,53   axb3 Kxb3 Lc7 a3 bxa3 Kxa3
>T4  00:00  4,68   a3 Kc2 Lc7 Kd3 Le5
>T5  00:00  4,70   a3 Kc1 Ld8 Kb1 Kb6 Kc2
>T6  00:00  4,83   a3 Kc1 Lc7 Kc2 Le5 Kd3 Kb6
>T7  00:00  4,69   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3
>T7  00:00  4,70   axb3 Kxb3 Lc7 a3 Ld6 Ka2 bxa3 Kxa3 Kb6
>T8  00:00  4,70   axb3 Kxb3 Lc7 a3 Ld6 Ka2 bxa3 Kxa3 Kb6 Kb3
>T8  00:00  4,83   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Le5
>T9  00:00  4,91   a3 Kc2 Ld8 Kd3 Lg5 Ke4 Kb6 Kd3 Lf4 Kc2 Lg5
>T10  00:00  4,93   a3 Kc2 Ld8 Kd3 Lg5 Ke4 Kb6 Kd3 Lf4 Kc2 Le5
>T11  00:00  4,87   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Lh2 Ke3 Lg1 Ke2 Ld4 Kd3 Kc6
>T11  00:00  4,88   Ka5 Kc2 axb3 axb3 Ld8 Kd3 Lg5 Kc2 Kb6 Kd3 Lh6 Kc2 Lf4
>T11  00:00  4,94   Lc7 Kc2 axb3 axb3 Kb6 Kd3 Le5 Ke4 Ld4 Kd3 Kc6 Kc2 Kb6
>T12  00:00  4,87   Lc7 Kc2 Ka5 Kd3 a3 Ke4 Kb6 Kf5 Ld6 Ke4 Lh2 Ke3 Lg1 Ke2 Ld4
>Kd3 Kc6
>T12  00:00  4,88   axb3 axb3 Ld8 Kc2 Ka5 Kd3 Lg5 Kc2 Kb6
>T13  00:01  4,84   axb3 axb3 Ld8 Kc2 Kb6 Kd3 Lf6 Ke4 Ld4 Kd3 Kc6
>T13  00:01  4,87   Lc7 Kc2 Ka5 Kd3 a3 Ke4 Kb6 Kd3 Le5 Kd2 Kc6 Kd3 Ld4 Ke2 Kb6
>Kd3
>T13  00:01  4,91   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Lf4 Ke4 Lg5 Kd3 Lh6 Kc2 Lg5
>T14  00:01  4,97   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Lf4 Ke4 Lg5 Kd3 Lf6 Kc2 Ld4
>Kd2 Kb6 Kd3 Lc3
>T15  00:01  4,97   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Lf4 Ke4 Ld6 Kd3 Le5 Ke3 Ld4
>Kd2 Kb6 Kd3 Lc3
>T16  00:02  4,97   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Lf4 Ke4 Lg5 Kf3 Lf6 Ke2 Kb6
>Kd2 Ld4 Kd3 Lc3 Kc2
>T17  00:04  4,95   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Lf4 Ke4 Lg5 Kf3 Lh6 Ke4 Lc1
>Kf3 Ld2 Ke2 Lg5 Kd3 Kd7 Ke2 Kd6
>T18  00:06  5,01   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Kd6 Ke3 Ke5 Kd3 Kf4 Ke2 Ke4
>Kd2 Le5 Kc2 Lc3
>T19  00:08  5,11   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Kd6 Ke3 Ke5 Kd3 Kf4 Ke2 Ke4
>Kd2 Lf4 Ke1 Kd3 Kd1 Kd4 Ke2 Kc3 Kf3 Kb2 Kxf4 Kxa2
>T20  00:12  5,11   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Kd6 Ke3 Ke5 Kd3 Kf4 Ke2 Ke4
>Kd2 Lf4 Ke1 Kd3 Kd1 Le3 Ke1 Lg5 Kf2 Kc3 Ke2 Kb2 Ke1 Kxa2
>T21  00:18  5,17   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Kd6 Ke3 Ke5 Kd3 Kf4 Ke2 Ke4
>Kd2 Lf4 Ke1 Kd3 Kf2 Le3 Ke1 Ld2
>T22  00:29  5,17   a3 Kc2 Lc7 Kd3 Kb6 Ke4 Kc6 Kd3 Kd6 Ke3 Ke5 Kd3 Kf4 Ke2 Ke4
>Kd2 Le5 Ke2 Lg7 Kf2 Kd3 Kf3 Ld4 Kf4 Lc3 Kf5 Ld4 Ke6
>
>look from here!
>
>T22+  00:38  5,52   Ld8
>
>T22  00:40  6,93   Ld8 Kc2 axb3 axb3 Kb6 Kd3 Kc7 Kc2 Kd6 Kd3 Ke5 Ke3 Lg5 Kd3 Lf4
>Kc2 Kd4 Kb2 Kd3 Kb1 Kc3 Ka2 Kc2 Ka1 Kxb3
>
>T23+  00:45  7,28   Ld8
>
>T23  00:55  8,29   Ld8 Kc2 axb3 axb3 Kb6 Kd3 Kc7 Kc2 Kd6 Kd3 Ke5 Ke3 Lg5 Kd3 Kf4
>Kd2 Ke4 Ke2 Kd4 Kf3 Kd3 Kg4 Kc3 Kf3 Kxb3 Ke4 Kxc4 Ke5 b3
>
>T24  01:22  8,59   Ld8 Kc2 axb3 axb3 Kb6 Kd3 Kc7 Kc2 Kd6 Kd3 Ke5 Ke3 Lg5 Kd3 Lc1
>Kc2 Kd4 Kb1 Kc3 Ka2 Kc2 Ka1 Kxb3 Kb1 Le3 Ka1 Kxc4 Ka2
>
>T25+  01:48  8,94   Ld8
>
>
>after 38 seconds Ruffian found Bd8 with an eval value of +8,94 in favour
>of black after 1:48 min.
>
>I think this is the winning line!
>
>Volker

I think almost anything except a3+ will eventually win.  The a3+ gives the white
King a hiding place which he cannot be driven out of.
Jim



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