Event: Division Three

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Opponent Rating Result
Jean-Claude Sartenaer 144 ½ - ½
Daniel Hall 178 0 - 1
Simon B Brougham 132 1 - 0
Alan R Marshall 120 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

144 = (574 + 400 * (1 - 1)) / 4)

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