Event: Richardson Cup

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Opponent Rating Result
Norman A Wragg 136 1 - 0
Glenn Halfpenny 179 ½ - ½
Neil Todd 148 1 - 0
Farshad Ai 172 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

259 = (635 + 400 * (2 - 1)) / 4)

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