Author: Uri Blass
Date: 08:58:30 09/05/03
Go up one level in this thread
On September 05, 2003 at 11:55:14, Andrey Popov wrote: >On September 05, 2003 at 11:49:13, Anthony Cozzie wrote: > >>On September 05, 2003 at 11:39:33, Andrey Popov wrote: >> >>>On September 05, 2003 at 11:02:07, John Merlino wrote: >>> >>>>On September 05, 2003 at 10:51:03, Andrey Popov wrote: >>>> >>>>>Look at the following position: >>>>>[D]6k1/3qppP1/b3p3/Pp1pP1PN/1PpP4/2P5/8/1BK5 w - - 0 1 >>>>>Does your engine see the victory? >>>> >>>>Chessmaster 9000, on a P4-2.4, needs a little over 2 minutes to see the win: >>>> >>>I see. 2 minutes and only 9 plies. >>>However, Ruffian (the same strength) could not get the positive score during >>>this time. What is the reason of this strange difference? >>>See the Ruffian log: >> >>the position is a null move killer. >> >>anthony > >Do you mean that Chessmaster does not use the nullmove heuristic? >Is there a method to deal with this kind of position using the nullmove? There is but I do not use it now. It is about rules when not to use null move pruning. There are more important things that can help me for winning games so this is not top priority. Uri
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