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Subject: Re: Real sacrifices.

Author: Robert Hyatt

Date: 20:22:18 12/10/98

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On December 10, 1998 at 17:11:03, blass uri wrote:

>
>On December 10, 1998 at 16:34:20, Georg Langrath wrote:
>
>>In the begining chesscomputers never made real sacrifices for position. Super
>>Constellation was the first chesscomputer that was able to do that.
>>
>>Dear members of CCC. Have you nice examples of genuine sacrifices from your
>>chesscomputers? They are nice to look at, and it is interesting to examine if
>>other programs make the sacrifice. Of course all sacrifices are not healthy, but
>>they are always nice to look at, especially from chesscomputers.
>>
>>Please answer this notice with sacrifices from your computers. I think we all
>>like to examine them.
>>
>>Georg
>8/4kp2/r3p1p1/2p4p/2Nb1P2/1PpP1KP1/1rP1R2P/4R3 b - - 0 1
>
>This position is from mclane's tournament
>
>Fritz5(16 bit) played against Genius5
>Raa2(an impressive positional sacrifice) and Genius5 played Nxb2 and I think it
>is the losing mistake.
>Fritz5 can find Rc1 and I think that it is enough for doing a draw.
>
>Uri



This really isn't a positional sacrifice at all.  IE if you let crafty search
this position it likes Rba2 to move the rook away, after 30 seconds and 13 plies
eval is +.04...  if you force it to search only Raa2, after the same depth the
score is +.02...  and from 2 plies on it doesn't think Nxb2 is the best move...

So this is "just a move" and not anything spectacular, IMHO...



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