Event: Peter Hughes

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Opponent Rating Result
Ahmet BH Hoscan 149 1 - 0
Douglas Vleeshhouwer 166 ½ - ½
Mark I Collinson 177 ½ - ½
Steve R Hodge 189 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

270 = (681 + 400 * (1 - 0)) / 4)

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