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Subject: Re: Can not computers invent sacrifices?

Author: Mike Byrne

Date: 16:48:46 08/04/03

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On August 04, 2003 at 13:29:16, Erik Bergren wrote:

>I was using Crafty to analyze the sixth game
>of the match "Deep Blue vs. Kasparov". At
>ply 15 the night sacrificing move that
>forces the win (most agree)is made "Ng5*e6".
>Crafty evaluates the resulting position as
>about -1.3 (thus in favor of Black).
>Like wise,Deep Blue's screen dump show's -1.6 (thus
>in favor of Black), and stays in Black's favor till
>after ply 21 "Bc1f4", six plies after the
>sacrifice!
>Like wise, the live commentators
>said "Fritz 4" was scoring -.28 (thus in favor
>of Black) at ply 25 "Pa2a4".
>    If all those computers rate the position
>resulting from that winning sacrifice as
>dropping in score for White, then that move
>would have been far below the favorite
>move from their move lists. Thus, they can
>not make that move on their own.
>    Is that all correct?


That specific move was in DB's book. Playing h6 was a gross error by Kasparov.



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