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Subject: Re: 3 interviews about engine protocols with T. Mann, R. Hyatt and M. Blume

Author: Ricardo Gibert

Date: 08:14:39 08/17/02

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On August 17, 2002 at 08:15:54, Andrew Williams wrote:

>On August 17, 2002 at 05:53:55, Ricardo Gibert wrote:
>
>>On August 17, 2002 at 00:44:48, Peter McKenzie wrote:
>>
>>>On August 16, 2002 at 13:20:43, Will Singleton wrote:
>>>
>>>>On August 16, 2002 at 00:58:25, Peter McKenzie wrote:
>>>>
>>>>>I imagine Tiger does normal null-move pruning except near the tips where it does
>>>>>something more aggressive.  I agree that exactly what he is doing near the tips
>>>>>is indeed a "big secret".  It seems likely to me that he is doing some sort of
>>>>>static based (as opposed to search based) pruning based on chess specific
>>>>>knowledge.
>>>>>
>>>>
>>>>Sounds like the approach Don Dailey talked about a few years back.  Is that what
>>>>you're talking about?  Did CT mention this specifically?
>>>
>>>Don Dailey's approach is one way to do it, I'm sure there are others.  CT didn't
>>>mention this specificially, I'm just speculating.
>>>
>>>Peter
>>>
>>>>
>>>>Will
>>
>>What is Don Bailey's approach?
>
>It's Don Dailey. He used to post here, and in looking for this for you I've seen
>LOADS of interesting posts he made. Anyhow, I *think* this is the one Pete is
>referring to:
>
>http://ccc.it.ro/search/ccc.php?art_id=28868
>
>However, Don had so many good ideas, this could easily be the wrong one. What a
>pity he no longer posts here!
>
>Cheers
>
>Andrew

Thanks for the very interesting link. I believe CT calls his forward pruning
technique "filter pruning". This is a name which does not seem to fit DBs idea.
I've come up with a very nice idea that fits this name, but I'm keeping the
details secret for myself!   :)

Your tip concerning the value of Don Bailey posts seems to be good one. Thanks
again.




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