Author: Fabien Letouzey
Date: 03:36:30 05/18/04
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On May 17, 2004 at 18:08:00, Jeff GAZET wrote: Hi Jeff, >with WinBoard protocol, the command "new" say we're starting a new game, so i >clear the hash table. >In UCI mode, there isn't any new command, all moves are given. There is "ucinewgame" in UCI+. You can clear the hash table when you receive it, if you want. >When must i clear the table ? You never have to. Whether to clear the hash table (if at all) is an engine-implementation decision and is not required by the protocols. During EPD testing, you should also receive a "ucinewgame" before each position. >What if i never clear the table ? This depends on your hash-table replacement scheme. I think most engines use some sort of aging mechanism (to consider entries filled during previous searches as "free"). Note that this problem is independent of the protocol. Fabien.
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