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I have changed the method again. The changes are along the lines of what I was describing yesterday. Stability is now a factor of how many of each player's games have already factored into the calculations for his ratings. This will cause the ratings of players who have played more games to stabilize more than the ratings of other players. I have also added a gravity factor. This is a function of stability. It goes to the player with the higher stability, and it diminishes with distance. It increases the reliability of the scores in the direction of the player with greater stability. Thus, the players who have played the most games become gravitational centers around which ratings of less experienced players gravitate. The specific details are given in the description of the method. I expect it will still need some tweaking, and I plan to add a form field for entering test data.