Author: William H Rogers
Date: 08:54:05 10/01/98
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On October 01, 1998 at 01:19:20, Jim Phillips wrote: >On September 29, 1998 at 21:02:06, Jim Phillips wrote: > >>On September 29, 1998 at 14:00:40, William H Rogers wrote: > >Bill, >I dug out that article when I got home and took a careful look at the >graph. It's linear all the way from beginner up to 2000+ rating.... >I assume it is for programs with a lot of knowledge, playing at 40/120 >time control. I determined that a best-fit formula to duplicate the >graph is: > U.S. Chess Federation Rating = (200 x Ply Depth) + 550 >This could be applied to your idea in your other post for a computer >program that rates its human opponent. I've had some other ideas about >that since reading your post; if I come up with a general approach I'll >post it. Such a program would certainly be a worthwhile project... very >interesting if nothing else.... >-Jim Phillips Jim, That is basically what I read, with the execption of adding the 550 at the beginning. Went back and located the test on Chess 4.7. They found that at 4 to 9 plys the program strength increased on a sliding scale. About 300 points at the lowest ply and down to 100 points at ply 9 or above. Average 200 points. Take a look at the suggestion that I made to Karsten at the bottom of the positings reguarding a test chess program. The coding should be fairley easy, with no secrets to expose for anyone who wanted to tackle the program. If ever a program like this exists, I think that the USCF and others might utilize it for helping beginners, without relying on human vs human played games. What do you think? I know that you program in QBasic and some time soon I'll send you my multi-ply program to look at. I have alpha/beta but I do not know how to check for game-over status. Maybe if you have the time you could check it out for me. Thanks Bill
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