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

Author: J. Wesley Cleveland

Date: 15:14:02 05/10/01

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On May 10, 2001 at 16:48:39, Dann Corbit wrote:

>NO big-O stuff in here!  I promise!
[snip]
>
>Now the board positions is another matter.  Let's suppose that there are only
>10^50th distinct board positions, including halfmove clock, castle rights, etc.
>We might store those in a linear list, and just have pointers from our tree to
>the list.  We would have to use 64 bit pointers because of the size of the list
>(some other clever indexing method might conceivably reduce this).
>
>Even if we could use perfect move ordering and only store sqrt(5.28713e9320)
>elements in the list, that's still a lot of pointers.
>
>Or have I missed something.

Yes. Each position has the best move (or 1 of the n equal best moves) stored
with it.



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