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Subject: Re: Pawn hash preponderance

Author: Robert Hyatt

Date: 10:11:55 02/06/02

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On February 06, 2002 at 11:43:58, David Hanley wrote:

>Hm.  I ran a 6-ply test from a "normal looking" middlegame position, and the
>pawn hash acquired ~3300 entries.
>
>That seems to indicate to me that a 10 ply search could produce up to 1,000,000
>entries in a complex position.  So if i stored 60 bytes per position, it'd need
>like 60 megabytes.
>
>Seems like a lot. :(
>
>dave


Nothing says the number of new positions grows linearly with time.  It is
almost certainly a log-type growth due to more transpositions as the search
goes deeper...

How did you conclude 1M positions?  ten plies ought to be a tree 256 times
larger so are you assuming that all those new positions are unique pawn
positions???




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