Event: Division 3

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Opponent Rating Result
Richard Myhill 1470 ½ - ½
Charles J Richmond 1548 0 - 1
Simon Marsden 1547 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1522 = (4565 + 400 * (1 - 1)) / 3)

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