Author: Mogens Larsen
Date: 05:49:13 01/07/01
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On January 07, 2001 at 08:31:59, James T. Walker wrote: >Hello Mogens, Hello Jim, >How can you determine for sure if the hash tables are cleared after each move? >I may be wrong in my assessment of Crafty because I'm certainly no expert. Now >that I have thought about it, it is possible that the hash tables are cleared in >Crafty also. I also must apologize to Hermano for posting info I'm not sure of. First of all I trust the words of someone who has tried to adapt his engine to every conceivable GUI there is, ie. that the engine receives a "new" command clearing hash. Secondly, I've tried to determine through observation whether the search of a WinBoard engine under Shredder differ when receiving an expected move (the response determined by the PV and therefore presumably stored in hash(?)) or an unexpected move. I didn't notice any difference. It looked the same. When using the "Debug mode" option I noticed that the engine receives a movelist before each move. How can that work without a "new" command? The difference is easier to spot under Chessbase. So you can generally tell what engines have the correct WinBoard adapter implementation by looking at the output. Mogens.
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