Event: SCCU County Championship: U1850

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Opponent Rating Result
Ian P Morgan 1810 ½ - ½
Ian P Morgan 1810 0 - 1
Nicholas D Grey 1795 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1538 = (5415 + 400 * (0 - 2)) / 3)

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