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

Author: Will Singleton

Date: 14:06:34 08/17/02

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On August 17, 2002 at 11:14:39, Ricardo Gibert wrote:

>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.

No, not Don.  It's Tom.  Tom Bailey.

Will



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