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Subject: Endgame tablebase frequency stats

Author: Shane Hudson

Date: 20:00:52 12/19/01


Hi all,

I don't know if anyone else here is interested, but if you want to see a
table showing how often each tablebase material configuration is reached
in practise (with statistics from a large database of master-level games),
I generated the results for a database of over 500,000 games and they
are available at the URL

http://scid.sourceforge.net/tbstats.html

You may find this helpful if you only have space or time to obtain a
limited number of tablebases -- but there is no guarantee that the endgames
most often reached in human play are also the endgames most useful to
a chess engine in deep searches, of course.

It would be interesting to see if these correlate to the actual frequency
of use of each tablebase in a chess engine, but I don't think anyone has
hacked their tablebase-probing code to collect such stats yet.

Cheers,
Shane



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