Author: Brian Kostick
Date: 10:32:04 03/17/01
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On March 16, 2001 at 10:44:47, John Dahlem wrote: >I have been messing around with the CM personality settings a little bit, but >the truth is I don't understand them. SO- > >Material/Position: is this basically the chess knowledge function? lots of >position=lots of chess knowledge? > >Selectivity: I always hear 10 is best, but I don't know why, and I don't know >what that means. I have a very slow computer (75mhz) so is it best to leave it >at 6 for me? > >I am trying to make a highly positional personality that still plays good >chess-1. is that possible on my slow computer and 2. what is the best >selectivity, positoinal settings, etc for it? > >Thanks very much! > >John John, You bring up some questions that are hard to answer. I will give my opinion and you should know I have no insider knowledge. When appropriate I will paraphrase from the Chessmaster 8000 manual. Material/Position: helps determine whether the program favors material piece points on the board or positional aspects. Players factor both to make a decision, with 0 representing a balance of both. You might find a little better play either to the right or left of zero, who knows. I interpret Selectivity as the programs ability to focus on what it thinks are the meaningful lines and to disregard the junk. However, there could be something overlooked in the 'junk'. 6 is the default, deemed best by the engine author. I think values over 10 or 12 are probably not of much use. Again a subjective settings, others will disagree. As for the profile you are trying to make up. Hey, give it your best shot, experiment some. Maybe start with Material/Position setting of 25 and Selective Search of 10? B.K.
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