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Subject: Re: Counter move heuristic

Author: Robert Hyatt

Date: 21:14:32 08/30/05

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On August 30, 2005 at 11:49:22, Gian-Carlo Pascutto wrote:

>On August 30, 2005 at 10:53:22, Alvaro Jose Povoa Cardoso wrote:
>
>>On August 30, 2005 at 08:43:56, Gian-Carlo Pascutto wrote:
>>
>>>On August 30, 2005 at 08:15:12, Alvaro Jose Povoa Cardoso wrote:
>>>
>>>>- You mean index = (from,to) pair taken from the current move at the parent
>>>>node?
>>>
>>>Yes.
>>>
>>>>- In the 64x64 table do we store complete moves (as they come from the move
>>>>generator) or just the (from,to) information?
>>>
>>>Doesn't matter. Your choice. You can test with noting the piece type that moved
>>>and encforcing that, or not doing that.
>>>
>>>--
>>>GCP
>>
>>One more thing, how do we age this entries?
>>Do we simply let the search overwrite the entries?
>
>Why would aging be needed???
>
>I guess you could make a countermove1, countermove2 etc just like one does with
>killers, if you really want to...
>
>--
>GCP


Are you using this?

I remember when it came out in the JICCA several years back (don't remember
exactly when).  I tried it but never got any sort of improvement with it.  Of
course I was using killers and the history heuristic already...

Are you getting a tree reduction with it?



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