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Subject: Re: Rybka results and....

Author: Vasik Rajlich

Date: 15:21:32 12/25/05

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On December 25, 2005 at 17:40:27, Stuart Cracraft wrote:

>On December 25, 2005 at 07:27:41, Vasik Rajlich wrote:
>
>>On December 25, 2005 at 05:09:31, Kurt Utzinger wrote:
>>
>>>On December 25, 2005 at 04:31:59, George Tsavdaris wrote:
>>>
>>>[...]
>>>> But i hope a knowledge based programs like Rybka to obtain the knowledge needed
>>>>to solve problems like the following easily. I don't really know why (almost)no
>>>>program has not the right knowledge to solve that kind of problems.
>>>[...]
>>>>A draw.....
>>>>[D]8/8/2K4p/4N2k/2p5/5N2/3P4/q7 b - - 0 3
>>>
>>>      Hi George
>>>      It does perhapbs not make sense to learn programs
>>>      things only needed once out of 10,000 games -:)
>>>      Best regards (and merry christmas)
>>>      Kurt
>>
>>I've already managed to make a rough design of the endgame knowledge solution
>>for Rybka 1.2, and this position won't be covered by it.
>>
>>In the long term, however, an engine should solve this position as well. It's
>>part of the bigger concept of knowing when you can't make progress.
>>
>>Vas
>
>While I respect this idea, of correct future assessment for problems like
>the one posted, I think the practical aspect of play would advise against
>knowing when one can't make progress if that were to imply not letting the
>opponent play on and possibly blunder against Rybka.
>
>You don't have to play perfect chess. Let the blunders continue to work
>on your behalf. The stronger you play, the sooner the opponent's blunder
>may occur to your advantage.
>
>Sounds strange. Just my thought.
>
>Greetings,
>
>Stuart

It all comes down to winning chances.

If black has better winning chances, he should get a positive eval. An eval like
+4 here doesn't accurately describe the winning chances though.

Vas



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