
Go ratings, rule updateBack to forum Thibault de Vassal (20081005) Go ratings, rule update In order to limit the inflation of Go ratings, I've updated the rules for ratings superior or equal to 2000. The idea of the original rule was to help players to find their rating range more quickly only. "Go ratings are first estimated from Go ranks (n kyu give a 2100  100 * n rating, n dan give a 2000 + 100 * n rating, n dan pro give a 2630 + 30 * n rating), then adjusted in real time after each result : Performance = Opponent Current Rating + 350 if the game is won, 350 if the game is lost. Case of a win (rating > 1999) : New Rating = ((9 x Current Rating) + (1 x Performance)) / 10 Case of a win (rating < 2000) : New Rating = ((8 x Current Rating) + (2 x Performance)) / 10 Case of a loss : New Rating = ((9 x Current Rating) + (1 x Performance)) / 10 The rating calculation does not take account of wins obtained by a stronger player when the Elo difference is superior to 350 points, the same with losses by a weaker player. In case of a loss against a player rated more than 350 points less, the opponent's rating considered in calculation is : Current Rating  350." Christoph Schroeder (20200204 01:13:01) Go ratings, rule update What is the initial rating for a Go player in his first tournament? I noticed that most players start at 100, but my own initial rating was 000. Thibault de Vassal (20200207 19:06:41) Go ratings, rule update Players can autoestimate their rating from 0 to 1100 (10 kyu). By default it is 0 (if not specified) or 100 (20 kyu).
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