Event: Billingham Synthonia Chess Club May 2023 Rapid

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Opponent Rating Result
Sean Cooke 1134 1 - 0
Benjmin Dodgson 1150 1 - 0
Bill Wilson 1896 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1527 = (4180 + 400 * (2 - 1)) / 3)

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