Event: City Chess Swiss 2022-23

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Opponent Rating Result
Serhan Celebi 1651 ½ - ½
Anthony Dunford 1789 1 - 0
Roger A Beckett 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1413 = (3440 + 400 * (2 - 0)) / 3)

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