Computer Chess Club Archives




Subject: Hash and first Fail High

Author: Peter Fendrich

Date: 12:27:06 08/14/03

1FH = The ratio where the first generated move in the node is a Fail High.

I experimented with removing the the hash table and became a bit surprised.
Normally I have about 1FH = 95-96%. When I removed the hash table that figure
raised to more like 1FH = 96-97% while the search depth, as expected, was

Increased 1FH when removing the hash table. Is this normal?


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