Event: Kenneth Appleby (U1700)

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Opponent Rating Result
David Halpin 1159 ½ - ½
Steve A Spencer 0 1 - 0
Luis Virgos Matilla 1491 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

883 = (2650 + 400 * (1 - 1)) / 3)

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