Event: Essex Summer Rapid Knockout

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Opponent Rating Result
Muhammad Faheem 1564 1 - 0
Muhammad Faheem 1564 1 - 0
John Cawdery 2086 0 - 1
John Cawdery 2086 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1925 = (7300 + 400 * (2 - 1)) / 4)

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