Event: Finchley Cup

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Opponent Rating Result
Stephen Banks 1356 ½ - ½
Stephen Banks 1356 0 - 1
Istvan Karacsony 1755 0 - 1
Istvan Karacsony 1755 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1256 = (6222 + 400 * (0 - 3)) / 4)

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