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Subject: Re: Help needed: is this a draw?

Author: Uri Blass

Date: 14:17:22 09/07/00

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On September 07, 2000 at 16:49:25, Joachim Denzler wrote:

>I need some advise on this position
>
>[D]8/2P5/2k5/B7/p5b1/P3K3/8/8 b - -
>
>of a game between CM6000 and Shredder 4. Both programs don't claim a draw
>(evaluation around +0.7) but I don't see how white should win.

I think that you should trust your intelligence and not the evaluation of
programs.

It is a draw

Black can put the king at a8 when the black bishop can be in the diagnol h3-c8

If white promote the pawn to c8 black can capture it.
In the best case white can capture the bishop and the pawn a4 and it is a draw
because KBP(when the pawn is at file a) vs K is a draw if the bishop does not
control the square a8 and the black king controls a8.


>
>Since CM6000 has no table bases this is not a surprise for me. But Shredder
>should be able to "see" the outcome of the game.

It is not a surprise.
Shredder does not have the 7 piece tablebases and there is no way for black to
force winning of a pawn so smaller tablebases cannot help.

White can play a lot of king moves and avoid repetition so there is no way that
programs can see the draw if they have not the right evaluation

Uri



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