Event: St Mary's Qualifier

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Opponent Rating Result
Jan Siemens 1346 ½ - ½
Tal Thompson McKie 0 0 - 1
Ted Anderson 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

449 = (1346 + 400 * (1 - 1)) / 3)

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