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Subject: Re: Iterative Deepening

Author: José de Jesús García Ruvalcaba

Date: 19:04:46 09/20/98

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On September 20, 1998 at 21:19:45, John Coffey wrote:

>On September 20, 1998 at 20:49:52, Robert Hyatt wrote:
>
>>
>>there's no sense in doing it repeatedly, because if you do, you research
>>too many nodes to the same depth. (think about it).
>
>Yes, this I understood.
>
>>
>>But, at times, this is useful, and is called "internal iterative
>>deepening."  If, on the PV search at the next iteration, I can't find
>>a hash move at any level, I do just what you suggest to find the best
>>move to try there first...  and it saves a good bit of time here and
>>there...
>
>The last time I wrote a chess program it was 1987, and that was with
>limited information available to me.   So sometimes the terminology
>has me confused even if I understand most of the concepts.  So what
>is "PV?"
>
>Thanks again,
>
>John Coffey

	"PV" means principal variation. At a moment in its search, it is the sequence
of moves the engine thinks is best play from the current position.



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