Author: Harald Faber
Date: 05:41:15 12/23/98
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On December 23, 1998 at 08:29:49, Amir Ban wrote: >>AFAIR it is "an engine's problem". Fritz sends kind of "new" signal which makes >>some engines clear their hash tables what harms their strength. >>Bob, Amir, short summary? > >AFAIK: Before each move the engine gets the position in the form of move history >from the initial position. That's the way it was in Fritz5, and it didn't change >in Junior5 and other 32-bit front-ends. There is no command to clear the hash >table. This is an internal engine consideration. > >This is not a bug, it's as it's intended to work. It certainly doesn't force the >engine to do anything it would rather not do, and since anyone who's written an >engine for ChessBase was aware of how it works, I assume he would take care not >to clear the hashtable if he thought that important. > >I don't know about Winboard engines, but since they were written to work in a >different environment, it's quite possible that the way Fritz5 handles them is >an unpleasant surprise, so for Winboard engines the term "bug" is more >justified. > >Amir What I ask myself in this case is: when is this behaviour a problem? Only in engine-vs-engine games? Or also when someone plays against a winboard engine because every move one makes clears the program's hash?
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