Event: Billingham Synthonia Chess Club May 2023 Rapid

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Opponent Rating Result
Darren John Donnison 1699 0 - 1
Bill Wilson 1896 0 - 1
Paul Scott 1307 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1234 = (4902 + 400 * (0 - 3)) / 3)

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