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Subject: Re: Tiger 15's wrong 0.00 score

Author: Uri Blass

Date: 12:01:28 12/14/02

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On December 14, 2002 at 13:33:18, James T. Walker wrote:

>On December 14, 2002 at 12:15:18, Uri Blass wrote:
>
>>This position is from the ssdf games
>>
>>[D]7R/2r5/1p5K/1p3B2/6P1/1p6/8/2k5 b - - 0 115
>>
>>Tiger15 played b2 with evaluation of 0.00 in the ssdf games when only material
>>evaluation can tell us that black is losing.
>>
>>other programs that I tried can understand at least that white is better.
>>
>>Uri
>
>It seems silly to me to pick one position and point out that the engines score
>does not seem perfect.  There are millions of these positions for every program.

I think that this information can reveal important details about weakness of the
program.

I also saw in the past a case when Tiger overevaluated supported passed pawns
in a queen endgame.
I believe that one of tiger's weaknesses is overevaluating passed pawns in the
7th.

It seems to imagine that they are promoted if there is a threat to promote them
in the next move and it seems wrong.

Uri



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