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Subject: Re: The depth of the chess tree, the size of the game of chess...

Author: Dann Corbit

Date: 10:20:21 05/11/01

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On May 11, 2001 at 05:10:32, Pekka Karjalainen wrote:

>On May 11, 2001 at 03:29:43, Dann Corbit wrote:
>
>>Which brings up another thought.  What percentage of moves are so horrible that
>>they are not even worth considering.  Is it 99.99999999999999999999999999%?
>
>Not that many in the starting position.  But a few moves into the game, who can
>tell?  There must be some data about how many moves a GM considers on average in
>middle-game and how many he/she rejects totally.  Computer analysis could give
>some (poorer?) answers too.
>
>But is this not something you could use the C.A.P. data to answer, or at least
>theorize a little?

To take an eyedropper of seawater and make hypothesis about the ocean is a bit
of a stretch.  I could do it, of course, but it would be wild extrapolation.
Besides which, I only analyze moves that people or machines have once played or
composed[1].  What about all the moves that people have never tried?

[1] Not completely true, I have done some studies using brute force move
generation for the first few plies.  A surprising number of checkmates do live
in there.




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