Author: John Merlino
Date: 13:35:38 04/08/04
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On April 08, 2004 at 12:02:54, Angelo Ciavarella wrote: >On April 07, 2004 at 15:51:32, John Merlino wrote: > >>On April 07, 2004 at 14:46:54, Angelo Ciavarella wrote: >> >>>I own CM 9000 and am disappointed by its infinite analysis of the various >>>problems I have tried.I am leaning toward Deep Fritz 8.Which program would be >>>best for speed and accuracy in analysis mode? Although CM 9000 beats the pants >>>off me, I have beaten it at 40/2 using the Stonewall.The problem seems to be >>>that it cannot see far enough ahead in the time alloted. >>> >>>Angelo >> >>Just out of curiosity, what is the speed of your computer? >> >>Also, if you prefer to play at longer time controls, you might want to try some >>popular user-created personalities specifically designed for longer games, such >>as CM_SKR (www.utzingerkurt.com -- click on the Chessmaster link), The King >>3.23S (www.geocities.com/sedatchess) and several others. >> >>jm > >I am using an Athlon 2800+ (2.083 ghz)with win XP and 512 megs of memory.I >noticed a strange thing doing a mate-in-ten problem.Using the mate solving mode >it took 3 hours!! but at the 40/2 setting found it in 5 seconds!! I asked >ubi-soft if this is a bug but have not heard from them. > >Angelo This is not a bug. Finding a mate in 10 problem by complete brute force search with no pruning (which is what the Solve for Mate feature does) requires going to 19 plies deep. That's quite a long way. For almost all mate-in-X problems, you should use the standard search (possibly via the Mentor Lines window, if you like). This method will be faster (or as fast) as the solve for mate feature 99% of the time. In general, finding shorter mates (7 or less) MIGHT be found faster via the solve for mate feature. Longer mates will probably always be found faster via the standard search. jm p.s. Johan will correct me if I'm not entirely accurate in the above.... :-)
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