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Subject: Re: Iterated search vs. Internal iterative deepening

Author: José Carlos

Date: 03:04:55 06/21/02

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On June 21, 2002 at 05:52:11, Gian-Carlo Pascutto wrote:

>On June 21, 2002 at 05:47:38, Daniel Clausen wrote:
>
>>When Crafty (and other engines) don't have a a move from the HT and want to
>>search N plies, they first make a search of N-2 (or something similar) and try
>>to get a move this way. Of course the search for N-2 plies will again don't have
>>a HT-move, because it's the same position. So this search will try a N-4 search
>>first, and so on.. internal iterative deepening :)
>>
>>[Please someone correct me if I'm wrong here :)]
>
>Hmm, wouldn't what you descibe degenerate into nothing?
>
>--
>GCP

  Not really. At some point, you search with depth<2, so you do a normal search.
Then you get a best move, which you return to the caller, who then uses it as
first move of a normal search... then you get back to the starting point, having
a best move to try first.

  José C.



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