Author: Ulrich Tuerke
Date: 07:08:29 01/10/00
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On January 10, 2000 at 07:41:08, Vincent Diepeveen wrote: >On January 09, 2000 at 22:36:57, leonid wrote: > >>Hello! >> >>What is a use of extensions and what kind of extensions existe in chess game? >> >>Thanks for explanation! >>Leonid. > >I see extensions as takin a deeper look to some lines analyzed by the >machine, because the nominal search depth is likely to miss the outcome >of it. So i would extend a move only if there is a chance for a horizon >effect if not applying the extension. > >The most obvious extensions: extend when in check, extend when mate threat. >Other possible extensions: extend when passed pawn races are happening. > >Vincent in other words, it's a workaround for the infamous horizon-effect. Extensions should make it more difficult for the program to shift relevant lines beyond the search horizon. Uli
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