Author: John Coffey
Date: 12:47:54 09/17/98
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I have strong opinions about this topic. Let us assume that dropping the search by 1 ply equals 1 rating class, or cutting the number of nodes in half drops the strength by 80 to 100 points. If that is the case then it should be possible to weaken most programs down to near 0 strength. But the fact is that most programs have a lower limit that they will not go below unless you adjust other factors such as the value of the pieces or the "blunder range." If and when I write my chess program (starting next month), I intend to have a feature where one could set the rating at any level from 0 to whatever the upper limit is. The limiting factor will be the number of positions that the program can look at, and other factors such as "blunder range" should not be necessary. John Coffey
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