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Subject: Re: New Rybka book in test: STUNNING

Author: Uri Blass

Date: 11:01:41 02/28/06

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On February 28, 2006 at 13:14:31, Salvador H Cresce wrote:

>On February 28, 2006 at 12:54:20, Uri Blass wrote:
>
>>On February 28, 2006 at 11:09:32, Majd Al-Ansari wrote:
>>
>>>Letting Rybka use an optimized book is almost not fair for other programs.
>>
>>Rybka cannot use that book not under chessbase so I consider it as not part of
>>rybka'a package.
>>
>>I think that the ssdf should not use it in their testing of rybka when they test
>>rybka because they should test commercial products and the combination between
>>.ctg book and rybka is combination of 2 commercial products.
>>
>>I am lucky to have Fritz8 and Junior9 as chessbase engines but I simply do not
>>care about book today and I am not going to use it.
>>
>><snipped>
>>>   Rybka was already beating any engine with its own native book very
>>>handily, so now I guess things will really get ugly.  They might get even uglier
>>>once the last few weaknesses of Rybka are covered (endgame knowledge).
>>
>>You are wrong if you think that lack of some endgame knowledge is the only
>>weakness of Rybka.
>>
>>based on my experience in correspondence games it has more weaknesses.
>>
>>Uri
>
>What are the weaknesses you found on correspondence games? Where do you play
>correspondence games? I play on ICCF.
>
>Salvador

I also play on ICCF and I found that it does not understand some sacrifices in
the middle game.

I will post more details later when the games are finished.

I do not trust automatically computers and I analyze positions but I basically
trust the opinion of chess programs and cases that I choose a move that is
suggested by no chess programs are rare and they are usually when analysis
proves or strongly suggest that the computer suggest a bad move.

I am afraid that I am going to lose at least one game because of the weaknesses
of chess programs but generally they are more productive than counter productive
and I believe that I could score less without trusting them and only using them
for blunder check.

Uri



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