Event: u1850 County Championship

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Opponent Rating Result
Roger H Gordonsmith 1835 ½ - ½
Neil Greenwood 1825 1 - 0
Stephen W Ruthen 1843 ½ - ½
Roger H Gordonsmith 1835 1 - 0
Neil Greenwood 1825 ½ - ½
Stephen W Ruthen 1843 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1968 = (11006 + 400 * (2 - 0)) / 6)

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