Event: SCCU County Championship: U1650

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Opponent Rating Result
John B Illingworth 1638 0 - 1
Andrew Offord 1608 ½ - ½
Roy Batchelor 0 0 - 1
Ruqayyah Rida 1261 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

827 = (4507 + 400 * (0 - 3)) / 4)

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