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Event: Inter

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Opponent Rating Result
David A Cox 166 0 - 1
David Shapland 176 1 - 0
Philip J Gregory 168 ½ - ½
Raghu Kamath 156 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

67 = (666 + 400 * (1 - 2)) / 4)

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