Author: James T. Walker
Date: 19:57:14 11/02/00
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On November 02, 2000 at 20:20:42, Pham Minh Tri wrote: >Hi, > >Could someone explain to me how a chess program rates its players and give me an >example based on following supposition: the rating of this proram is 2000, a >player won it 3, lost 2 and drew 2; what is the rating of this player? > >Thanks in advance for any help, >Pham Hello, You can estimate a "Performance rating" based on the above games. It is a simple formula : Rating of player=Opponents average rating + (400 x W-L)/N. Where W=wins & L=Losses & N= Total number of games. So in your case you have: New rating = 2000 +(400 x 3-2) / 7 New rating = 2000 +(400 x 1) /7 New rating = 2000 + 400/7= 2000 + 57 = 2057 Jim
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