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Subject: Re: Real Sacrifices Part II

Author: blass uri

Date: 09:28:16 12/15/98

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On December 15, 1998 at 04:50:28, Harald Faber wrote:

>On December 15, 1998 at 03:06:54, Laurence Chen wrote:
>
>>From the replies to the posting I read so far about this trick subject, it seems
>>that the majority of chessplayer think that real sacrifices are unsound and it
>>should not be played, and that because of this the chess engine does not play
>>it.
>
>To make a long story in a short answer:
>Sacs are hard to refuse OTB. That is the only reason some masters and GMs play
>some. They pull up some confusing struggle knowing that the opponent won't be
>able to save the game because of 2 aspects: 1) king safety/ under pressure
>(=psychology) and 2) time. Maybe the GM knows that the sac is unsound. He plays
>it becasue he knows there is only one defence and the opp won't find it.
>In corespondence chess you have to be much more carefully.
>The only programs playing risky sacs are the ones that have a sound eval for
>king safety and attacking potential, MCP, The King, WChess and CSTal come in
>mind for that case. MAYBE Junior5. Fritz won't play it unless it is sure to win
>material. :-)
I do not agree about fritz
I remember that fritz5.16 sacrificed a rook for a knight in the last round of
mclane's tournament against Genius5 when it did not see that it could win
material by the sacrifice.

Uri



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