Event: June Swiss

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Opponent Rating Result
Stephen F Crane 1427 ½ - ½
Roy Hughes 2039 1 - 0
Biran S Shah 1826 0 - 1
Mervyn J Hughes 1851 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1686 = (7143 + 400 * (1 - 2)) / 4)

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