Author: Uri Blass
Date: 03:14:48 02/22/04
Go up one level in this thread
On February 22, 2004 at 06:02:25, Andre van Ark wrote: >On February 22, 2004 at 05:51:05, Uri Blass wrote: > >>On February 22, 2004 at 04:02:21, Andre van Ark wrote: >> >>>Hi folks, >>> >>>I try to play with Ruffian 2.0.0 under the Chessbase Gui. Ruffi has been set up >>>as a UCI engine. >>> >>>It work "fine" but........ >>> >>>After looking at the Ruffian.log I discovered that Ruffian gets the "New game >>>command" AFTER EACH MOVE. >>> >>>So, Ruffian never can keep its hashtables and has to calculate each move from >>>the beginning. That is imho a BIG disadvantage. >> >>I disagree about the size of the disadvantage. >>This is probably not more than a small disadvantage of not more than 20 elo. >> >>remember that most of the information in the hash is irrelevant because part of >>it is about moves that ruffian did not play and part of it is about replies that >>the opponent did not reply. >> >>Uri > >Hi Uri, > >The difference now visible for me is that if Ruffian "forcasts" the right >opponents move, it moves immediately after the "ponderhit". I see that the demage is bigger than what I thought by your descreption. If clearing the hash is done after pondering then Ruffian lose more time. Movei is clearing the hash after every move but it does not prevent it to play immediatly after pondering the right move because clearing the hash is done only in the beginning of the search and when the opponent plays the expected move it does not start a new search. Uri
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