Event: City Chess League 2021-22

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Opponent Rating Result
Widianto Siek 1990 ½ - ½
Daniel Lindner 2208 ½ - ½
Peter W Rose 1810 1 - 0
Johan Rydahl 1923 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2183 = (7931 + 400 * (2 - 0)) / 4)

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