Event: Durham League Division A

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Opponent Rating Result
Ken P Neat 2169 0 - 1
Noppakorn Tantipura 2271 ½ - ½
Ken P Neat 2169 0 - 1
Douglas Smith 1970 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1845 = (8579 + 400 * (0 - 3)) / 4)

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