Event: 6th Somerset New Year Intermediate

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Opponent Rating Result
Leon Nelson 1650 1 - 0
Thomas Merchant 1563 1 - 0
Christine F Constable 1480 1 - 0
Tiiu Loog 1671 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1991 = (6364 + 400 * (4 - 0)) / 4)

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