TalkChess.com

[david nash]

Well the legal moves seem ok at this stage, I found some bugs while compressing large files.

I think I am failing to appreciate some of the finer qualities of Zobrist hash, perhaps a hash table / tree lookup system saying "white pawn on e4 and black Queen on a8" using a tree of hash elements, (an index table that resides in a separate table), this tree would work with the current memory structure and would not affect the normal processing.

Also a second hash key for material imbalances, I was reading about material imbalances on the chess programming wiki.