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Subject: Re: Is there a limit on our ability to compute endgame tablebases?

Author: Vine Smith

Date: 03:39:31 05/28/02

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[snip]
>It has been proven a few times that 6-man TBs don't make an engine "smarter", it
>just makes them play a prettier endgame.  The 3/4/5's are really the only TBs
>you NEED to have.

I don't see how such a thing could ever be "proven". First, there's the obvious
fact that as the number of men in the tablebases increases, the engine's game
must improve, since if it had access to 32-man tablebases, I think it might play
very well indeed. Second, I fail to see why 5 should be some magic number for
the maximum number of men in the tablebases that are "needed" -- why not 4 or 7
or any other number? Just because the 6-man tablebases are not yet complete does
not render them any less necessary than 3-4-5. Finally, if you consider the item
posted at Chessbase a month or two ago about KRN vs. KNN endings, which featured
a 230-or-so move winning procedure, it becomes clear that some of these endings
absolutely require the tablebases for correct play, because the lines are
completely concrete, and cannot be analyzed in terms of ideas or concepts, so
that no algorithm for pushing the king to the edge, or limiting the knights'
mobility could solve it.

Regards,
Vine



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