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Subject: Re: test position rook sacrifice CometB37 / Shredder 6.32 even faster

Author: Uri Blass

Date: 14:55:24 12/24/01

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On December 24, 2001 at 17:04:48, Kurt Utzinger wrote:

>[D] 8/pR4pk/1b6/2p5/N1p5/8/PP1r2PP/6K1 b - - 0 1
>
>Analysis by Comet B37 on Ath 1.4/32 MB hash
<snipped>
>1...Txg2+ 2.Kxg2
>  +-  (6.53)   Tiefe: 1/3   00:00:00


Interesting that Comet prefer another rook sacrifice at depth 1.
I wonder why it does not change it's mind.

It seems that comet does not analyze all the legal moves at depth 1.

<snipped>
>Analysis by Shredder 6.32 on Ath 1.4/32 MB hash
>
>1...Kg6 2.Sxb6 Txb2
>  ±  (1.40)   Tiefe: 1/2   00:00:00
>1...Kg6 2.Sxb6 axb6 3.Txb6+ Kf5
>  +-  (1.53)   Tiefe: 1/2   00:00:00
>1...c3 2.bxc3
>  +-  (1.51)   Tiefe: 1/2   00:00:00
>1...c3 2.bxc3
>  ±  (1.40)   Tiefe: 1/2   00:00:00
>1...Txb2 2.Sxb2
>  ³  (-0.39)   Tiefe: 1/2   00:00:00
>1...Txb2 2.Sxb2
>  ³  (-0.39)   Tiefe: 1/2   00:00:00

I wonder how can shredder see a positive score for black for Rxb2 at depth 1
when the main line says that it loses a rook.

Uri



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