Event: Billingham Synthonia Chess Club May 2023 Rapid

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Opponent Rating Result
Bill Wilson 1896 0 - 1
Fraser Craig 1325 0 - 1
Sean Cooke 1134 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1318 = (4355 + 400 * (1 - 2)) / 3)

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