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Subject: Re: how does crafty understand that black is better?

Author: Francesco Di Tolla

Date: 08:56:57 04/08/03

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On April 08, 2003 at 10:04:02, Uri Blass wrote:

>[D]8/5pp1/4p1kp/1Q6/2rqP2P/8/5PP1/5RK1 w - - 0 27
>
>This position happened in a game of movei.
>For the game see http://f11.parsimony.net/forum16635/messages/46511.htm
>
>I found that latest movei also suffers from the same evaluation problem.
>
>Movei evaluates the position as almost equal.
>
>I found that Crafty and a lot of programs understand that black has a clear
>advantage(more than 0.5 pawns for black from the
>first iterations).
>
>I understand that black is better but the question is what factor in evaluation
>helps a lot of programs to understand it.
>
>I can explain reasons to give advantage for black from program point of view:

I think that most programs are more materialistic and see that the e4 pawn is
almost lost.
The f2 pwn i pinned and advancing it to e5 will further weaken it. Ther rook
cannot give any support since after Re1 Rb2 forces the rook back

regards
Franz




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