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Subject: Re: Tablebases Again

Author: James T. Walker

Date: 06:41:23 10/11/98

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On October 11, 1998 at 04:16:31, blass uri wrote:

>
>On October 10, 1998 at 21:25:25, James T. Walker wrote:
>
>>I tested Crafty15.20 tonight and it solves the problem instantly.  I also tested
>>the following computers/programs. ALL solved the mate instantly.
>>Fritz5.0,Rebel Decade 2.0,Rex2.3,Fidelity Mach3,Fidelity Mach IV,M-Chess Pro 3.5
>>M-Chess Pro 5.0,Genius 4.0, Genius 2.0,Kasparov's Gambit,CM4000,CM5000,CM5500
>>and my handheld Mephisto Marco Polo(USCF about 1800).
>
>The rating is not important
>The rating of Junior5 is near 2500 fide elo based on games against humans
>
>>I do not have a single
>>program/computer that does not solve this instantly.  Maybe the creator of JR.
>>should take a look at this problem.
>
>crafty has no problem with positions when one side has a pawn but I read that it
>has problems with positions like KBvKB when there is a mate in 1 it cannot see
>something like
>white Kh1 Bg1
>Black Kh3 Bf1
>I think in a similiar position crafty could not find a mate in 1.
>
>In practical games Junior did not suffer from this problem.
>
>Uri

I found that you are right in the above position for Crafty !  That's the only
one I can find like that.  I also found if the same setup is done in the h8
corner that crafty will make the Bg7 # move but scores the game as a draw ??
Thank for the info.
Jim



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