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Subject: Q: pawn hash?

Author: Scott Gasch

Date: 23:20:03 07/19/99



Ok, I've heard people talking about pawn hash tables and this got me thinking
about them.  I am not sure how to do it --

1) if you just hash 8 pawn locations and an associated evaluation that is pretty
easy.  It's a nice small number, can fit in memory, etc... However, you can't
recognize passed pawns becasue you don't know where the enemy pawns are?

2) if you make a table with all 16 pawns in all possible configurations I
calculate a total of 1120853258472 possibilities.  That requires quite a bit of
memory... ;)

3) do you mean just hash the recent scores for pawn structures?  This way any
node that has the same pawn structure anywhere in the tree can get the pawn
score instantly?

Thanks,
Scott



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