Author: Angrim
Date: 12:09:42 07/19/02
Go up one level in this thread
On July 18, 2002 at 17:40:48, Bill Murphy wrote:
>
>
>Hi All,
>
>To be honest, I do not even begin to understand the EGTB format. I still have a
>suggestion / question that I'd appreciate it if those who do would ponder for
>me.
>
>Seeing as how the 6-man tables are almost too big to store today, and 7
>certainly are... Could we instead of storing the number of moves to mate for
>every position, only store the number of moves to mate part of the time?
>
>For example, decide that we can full-search 10 ply reasonably quick. Then make
>an EGTB where all the positions that mate in { 0-9, 11-19, 21-29, etc. } moves
>are dropped. Then TB would only hit on mate in X where X is a multiple of 10.
>
>Does this allow for further compression? It would mean slower end game play, but
>might make 7-man TB's possible?
>
>Thanks for considering this for me.
>
>--Bill murphyw_xyzzy@yahoo.com
This idea has been tried before, and does work, but the space savings
were low enough that it was not worth the speed loss. Someone posted
the space saving for a bunch of divisors(your 10) from 3 to 100 quite
a while back, but I couldn't re-find that post.
Angrim
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