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Subject: Re: Draw due to lack of blockade detection...

Author: Omid David

Date: 08:48:06 10/04/02

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On October 04, 2002 at 11:34:39, Vincent Diepeveen wrote:

>On October 04, 2002 at 11:26:51, Omid David wrote:
>
>slowing down the search is not the problem. the problem i
>explained in email to sargon

So I assume the problem is that it's not 100% reliable, and may return
inaccurate estimates. Right?


>
>>On October 04, 2002 at 11:22:05, Vincent Diepeveen wrote:
>>
>>>On October 04, 2002 at 10:34:43, Omid David wrote:
>>>
>>>had fritz implemented such a scheme it would play 300 points weaker
>>>anyway.
>>
>>It depends on how you implement it without slowing down the search
>>significantly, and that's what I'm currently working on...
>>
>>It's obvious that applying the whole heuristic on each and every node is too
>>expensive. But a wise application of it, could detect many draws without any
>>significant impact on the total speed.
>>
>>Omid.
>>
>>
>>>
>>>>Just today we had a discussion regarding the importance of blockade draw
>>>>detections http://www.talkchess.com/forums/1/message.html?255950
>>>>
>>>>Had Fritz implemented such a scheme, it wouldn't have stepped into the drawing
>>>>variation.
>>>>
>>>>My engine instantly announced draw based on its blocked-draw detection
>>>>heuristic. While Fritz never realized the draw...
>>>>
>>>>Omid.



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