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Subject: Re: Questions about Nimzo8 and its proprietary endgame tablebases.

Author: Robert Hyatt

Date: 07:18:26 12/21/00

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On December 21, 2000 at 09:45:23, Peter Kasinski wrote:

>These are meant to be permanently stored in RAM, and thus the significant RAM
>requirement. At the same time Nimzo8 still uses Nalimov tablebases and assigns
>RAM for that.
>
>1. Isn't there an overhead of trying to use both?
>2. What is a reasonable strategy for allowing Nizmo8 to use one vs. the other?
>I.e. should a nominal amount of RAM be assigned for caching Nalimov tablebases
>and the rest (as much as possible) to Nimzo's own?
>3. Finally, does it make sense to increase these allocations at the expense of
>the main hash table size?
>
>If someone has info/interesting experiences with the above, please do share
>:)Thanks!
>
>PK
>
>ps. Merry Christmas to all (who celebrate)!


The Nimzo tablebases are win/lose/draw, which makes them much smaller than the
normal distance-to-mate tablebases.  They are used only in the search as they
can't tell which move leads to the shortest mate.  Once the root position is
5 pieces, normal tablebases have to be used to avoid repetitions, which is why
both are needed.



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