Event: Notts Qualifier

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Opponent Rating Result
Henry Andrews 1000 0 - 1
Charles Prestwich 0 ½ - ½
Hussien Abdelalim 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

67 = (1000 + 400 * (0 - 2)) / 3)

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