Event: County Championship

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Opponent Rating Result
Raymond J Ilett 1825 ½ - ½
Qais Karimi 0 0 - 1
Denis Georgiou 1846 1 - 0
Peter N Walker 0 1 - 0
Joe Kilshaw 1873 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1269 = (5544 + 400 * (3 - 1)) / 5)

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