Event: Cotswold Open

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Opponent Rating Result
Michael J Ashworth 2212 0 - 1
Tom Brown 2245 0 - 1
George I Miller 1837 ½ - ½
George Charman 1712 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1802 = (8006 + 400 * (0 - 2)) / 4)

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