Event: Woodhouse Cup

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Opponent Rating Result
David W Stephenson 167 1 - 0
Neil Griffiths 129 1 - 0
Peter Rawcliffe 143 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

413 = (439 + 400 * (2 - 0)) / 3)

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