Event: u1850 County Championship

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Opponent Rating Result
Armando Galletti 1756 0 - 1
Andrew PE Smith 1744 ½ - ½
Nimish Shah 0 ½ - ½
Ed Kirkham 1741 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1210 = (5241 + 400 * (0 - 1)) / 4)

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