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Subject: Re: A test position for chess programs(counting attackers-defenders)

Author: blass uri

Date: 07:12:44 01/14/99

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On January 14, 1999 at 08:49:37, James T. Walker wrote:

>On January 14, 1999 at 07:36:07, blass uri wrote:
>
>>
>>5rk1/1B6/4p1pp/2b3p1/3qP3/6P1/1P2QPP1/5RK1 w - - 0 1
>>
>>This is a position from the game Junior5-FM Boris Mariasin(The result was draw)
>>
>>Junior5 and other programs evaluating it as an advantage fo white because they
>>do not know to count Attackers-Defenders
>>
>>Is there a progam with a more realistic evaluation (small advantage for black or
>>at least less than 0.2 pawn for white)?
>>
>>Uri
>Hello Uri,
>I'm a very bad chess player so I don't understand what is happening in this
>position.  I see that white is up a pawn which is about a point.  So where is
>the advantage for black?

The advantage of black is that the black pieces attack f2 and all the white
pieces must defend f2.

White has no plan to do a progress in the position when black can play h5,g4,h4
with an attack.

I am not saying that black is winning but the evaluation should be at least
equality.

The problem of computers is that they do not count attacker-defemsors of f2 and
cannot understand that the fact that white is passive give black at least
equality

Uri





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