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Subject: Re: Cilkchess

Author: Vincent Diepeveen

Date: 09:19:54 02/26/02

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On February 26, 2002 at 08:28:46, Uri Blass wrote:

>On February 26, 2002 at 07:48:42, Vincent Diepeveen wrote:
>
>>On February 25, 2002 at 20:27:56, K. Burcham wrote:
>>
>>>
>>>I know most here are familiar with all of this, but I thought this
>>>was interesting reading. Cilkchess must have been strong.
>>>kburcham
>>>
>>>http://supertech.lcs.mit.edu/cilk/
>>>
>>>Cilkchess came in fourth in the 1999 world computer championships.
>>>Cilkchess beat Junior, Rebel, Nimzo, Chesstiger, Hiarcs, Diep. in the standings.
>>
>>Actually i didn't play the big cilkchess but 'mini' in paderborn and
>>DIEP won from it. I did lose to cilkchess in the dutch champs though
>>where it participated.
>>
>>Programmer is Don Dailey, perhaps he can react himself here. He's
>>a real cool guy. We played some game cilkchess - diep at my home.
>>
>>In world champs i remember it usually searched around 17 ply.
>>
>>Note that i outsearched any opponent in the endgame. I got 20 ply there.
>>
>>Reason is my endgame eval was more stupid than theirs and i ran on
>>Bob's quad in wcc99.
>
>If the definition of outsearching is searching more plies then I agree
>but it has nothing to do with being better at tactics.
>
>Stupid evaluation can prevent null movers to see tactics because it can cause
>them to prune moves when there is no threat based on the evaluation.
>
>better evaluation with smaller depth may mean seeing winning material faster
>because it means not to prune the wrong moves and 17 plies with pruing of the
>right moves may be better than 20 plies with pruning of wrong moves.
>
>Uri

outsearching by definition is getting more plies.

being tactical stronger either by better extensions or a better
eval, or even a patzer eval is obviously something different.



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