Event: City Chess Swiss 2022-23

Opponent Rating Result
D Ian Calvert 1993 ½ - ½
Antony C Hall 1849 ½ - ½
Yohance Dixon 0 1 - 0
Johan Rydahl 1909 0 - 1
Widianto Siek 2027 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1636 = (7778 + 400 * (2 - 1)) / 5)

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