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Subject: Pepito plays h4

Author: Carlos del Cacho

Date: 10:48:42 05/24/01

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On May 24, 2001 at 05:06:48, Miguel A. Ballicora wrote:

>epd record is
>5rk1/1pp3p1/p1p5/7p/6P1/4b3/PPP2RPP/5RK1 b - - bm h4;
>
>[D]5rk1/1pp3p1/p1p5/7p/6P1/4b3/PPP2RPP/5RK1 b - -
>
>It is a modified version of a position from real tournament play that
>I saw in www.inforchess.com. I modified so a program won't find the solution
>for the wrong reasons. I tested crafty and could not find the solution
>even after 17 plies. I did not continue further.
>Is there any program that find the solution in a reasonable time?
>This is very easy for humans, I find the solution myself instantanously
>and took me few seconds to verify it. The original position is without the
>white pawn in g4.
>
>Regards,
>Miguel

It takes 14 seconds on my K6. Now, don't ask me why (is there something right in
those PVs below?) but here's the analysis (dev version):

 3    94    21      341  Ae3xf2 Tf1xf2 Tf8xf2 Rg1xf2 h5xg4
 3    94    22      740  Ae3xf2 Tf1xf2 Tf8xf2 Rg1xf2 h5xg4
 4    89    23     3112  Tf8xf2 Tf1xf2 h5xg4 c4 Ae3xf2 Rg1xf2
 4   127    25     4302  h5xg4 !!
 4   127    25     4848  h5xg4
 5    94    27     8305  h5xg4 ??
 5   228    31    14680  h5xg4 c4 c5 b4 Ae3xf2 Tf1xf2 Tf8xf2 Rg1xf2 c5xb4
 6   193    39    30411  h5xg4 ?? c4 c5 b4 Ae3xf2 Tf1xf2 Tf8xf2 Rg1xf2 c5xb4
 6   122    48    45965  h5xg4 g3 Ae3xf2 Tf1xf2 Tf8xf2 Rg1xf2 Rg8-f7 Rf2-e3
Rf7-e6
 7   115    63    75653  h5xg4 g3 c5 Rg1-g2 Ae3xf2 Tf1xf2 Tf8xf2 Rg2xf2 Rg8-f7
Rf2-e3
 8   125   111   161739  h5xg4 g3 c5 Rg1-g2 Ae3xf2 Tf1xf2 Tf8xf2 Rg2xf2 Rg8-f7
Rf2-e3 Rf7-e6
 9   122   195   325590  h5xg4 g3 Tf8xf2 Tf1xf2 g5 c4 Rg8-g7 b3 Ae3xf2 Rg1xf2
Rg7-f6
10   118   395   712164  h5xg4 g3 c5 Rg1-g2 Ae3xf2 Tf1xf2 Tf8xf2 Rg2xf2 Rg8-f7
Rf2-e3 g5 Re3-e4 Rf7-e6
11   132  1421  2604676  h4 c4 c5 g5 Rg8-h7 b3 Tf8xf2 Tf1xf2 Rh7-g6
11   132  1450  2651081  h4 c4 c5 g5 Rg8-h7 b3 Tf8xf2 Tf1xf2 Rh7-g6
12   138  2275  4211737  h4 b3 c5 c3 b6 g3 h3 g5 Tf8-f7 g6 Tf7-f6 a4 Ae3xf2
Tf1xf2 Tf6xg6
13   131  5532  9712384  h4 b3 c5 c3 b6 a3 Tf8-f7 b4 g5
14   141  9569 16993099  h4 a3 c5 a4 Tf8-f4 h3 Ae3xf2 Tf1xf2 Tf4xa4 Rg1-h2
Ta4-a2
15   140 17971 31083566  h4 a3 c5 a4 g5 a5 Tf8-f4 g3 Tf4xg4 Tf1-e1 h4xg3 Te1xe3
g3xf2 Rg1xf2 Tg4-h4 h3 Rg8-f7




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