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Subject: Re: Efficient hash algorithm?

Author: Danniel Corbit

Date: 11:36:17 09/28/98

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On September 28, 1998 at 12:47:01, Danniel Corbit wrote:

>On September 28, 1998 at 01:35:45, Dave Gomboc wrote:
>[snip]
>>I should correct this slightly: even in these rather rare circumstances, there's
>>still a 17-ply or so search from where the program drops out of the opening book
>>to where it is hitting the endgame tables.
>Imagine a system where you have opening books carefully tested to a great depth
>{also analyzed to a high enough degree for confidence}.  Then you take the top
>three positions[1] from the end of each book ending and analyze them carefully
>for 20 plies forward {about 3 billion positions per ending}.  It's not really
>doable right now, but this is not inconceivable.  Eventually, the chess program
>would play less and less calculations and do more and more database lookups
>until it had to explore that rare position not in the calculations.
[1] (1)Best eval (2) best win percent (3) largest volume of wins is one possible
determination.



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