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Subject: Re: Hash Table: Different moves with different table sizes??

Author: Robert Hyatt

Date: 14:04:33 03/03/00

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On March 03, 2000 at 11:35:22, Brian Richardson wrote:

>Looking for suggestions with a hash table "problem".  Running
>
>8/8/7k/8/4p1K1/8/5P2/8 b - - bm e3; id "Fine position 16";
>
>Tinker likes e3 with some hash table sizes (usually at around ply 16), but Kg6
>at other sizes.  Even stranger is that e3 is picked at some smaller hash sizes,
>and with very large sizes, but not for "medium" size hash tables.
>
>Of course, I may just have a _nasty_ bug in my hash table code.
>
>Or, it may be something subtle.  It _may_ have something to do with move
>ordering--if there are two branches that happen to have the same score at the
>same depth, in one case one position is hashed and it never "sees" the other
>one?
>
>Have others run into this?
>
>Any suggestions welcomed.
>Thanks.


This is common.  Try fine#70.  I can find the right answer anywhere between
17 and 23 plies, depending on the size of the hash table...



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