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Subject: Re: Hash move question

Author: Robert Hyatt

Date: 20:29:59 08/17/01

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On August 17, 2001 at 22:36:35, James Swafford wrote:

>On August 17, 2001 at 15:16:54, Alvaro Jose Povoa Cardoso wrote:
>
>>Only now I've implemented the trick of avoiding generating any moves by
>>searching the hash move first (if there is one) and bailing out early if this
>>move causes a fail high.
>>Now, I just don't get the same node counts. I get tree size reductions.
>>This is a bug right?
>>I should get exactly the same node count, just a litle faster right?
>
>You're not searching the same tree, so why should you get the same
>node count?  I would expect something close, but not the same count.
>
>--
>James
>


The tree _should_ be the same.  What he is doing is first trying the hash
move, then generating moves.  What he probably did before was generate moves
and extract the hash move from the list...  same thing if it is done right.



>
>>
>>Help appreciated,
>>Alvaro Cardoso



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