Author: Jim Phillips
Date: 14:37:27 10/01/98
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On October 01, 1998 at 11:54:05, William H Rogers wrote: >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 Hi Bill, I think a testing program like that would be a blast to play! No matter how you played, it should end up being a nip-and-tuck game. And you're right: the coding would not be difficult; it could be based on an already-existing program. Maybe I should lean my Primevil program (now close to birth) in that direction. I'd like to look at your code, so feel free to e-mail it. When I checked yesterday, www.qbasic.com had not yet updated your Warlord file to their site.... I'll keep checking. Thanks for the post. :) -Jim Phillips
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