Event: Individual Championship

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Opponent Rating Result
John G Cooper 0 0 - 1
Ben Fearnhead 139 1 - 0
David A Phillips 181 0 - 1
Paul N Fearnhead 106 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

7 = (426 + 400 * (1 - 2)) / 4)

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