Event: Essex Summer Rapid Knockout

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Opponent Rating Result
Peter A Nickals 1640 0 - 1
Peter A Nickals 1640 1 - 0
John H Hodgson 2152 1 - 0
John H Hodgson 2152 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2096 = (7584 + 400 * (3 - 1)) / 4)

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