Event: Kenneth Appleby

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Opponent Rating Result
Ian D Strickland 122 1 - 0
John Hipshon 123 ½ - ½
Hugh Thornton 126 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

390 = (371 + 400 * (2 - 0)) / 3)

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