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Subject: Re: Fritz 6 tablebases ?

Author: Eugene Nalimov

Date: 22:41:01 02/05/00

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Are you serious when you are talking about 8-man tablebases? Please notice that
8-man tablebase will be ~60 times larger, than 7-man tablebase, 7-man tablebase
will be ~60 times larger, than 6-man tablebase, and 6-man tablebase is ~60 times
larger, than 5-man tablebase. So, average 8-man tablebase would be ~60*60*60 =
216,000 times larger, than average 5-man tablebase. Assuming size of average
5-man TB equal to 100Mb, we'll have size of 8-man TB equal to 20,000Gb (all
calculations are very approximate, of course). And please notice that there are
much more different 8-man TBs than different 5-man TBs.

So it looks that for now practical limit is 6-man TBs, if you can spend tens of
gigabytes (hundreds, when we'll have more) for them.

You can get statistics from Crafty site, look at TBS files in TB/tbs directory.

Eugene

On February 06, 2000 at 01:16:51, Les Fernandez wrote:

>Hi Eugene,
>
>If it is not to much trouble can you supply me with info regarding 3-4-5-6-7-8
>piece table bases.  This includes all variations including pawns.  What I would
>like to know is:
>
>How many legal positions are there for each above set and if possible just those
>that can actually occur.
>
>How much memory would each set require for storage.
>
>Thanks for your help Eugene.
>
>Les



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