Event: 6th Somerset New Year Intermediate

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Opponent Rating Result
Greig A Sweetland 1634 ½ - ½
Stephen Williams 1610 1 - 0
Tiiu Loog 1685 ½ - ½
Leon Nelson 1650 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1645 = (6579 + 400 * (1 - 1)) / 4)

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