Event: IM Brown

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Opponent Rating Result
Graham J Wilson 145 0 - 1
Alan S Metcalfe 138 1 - 0
Paul Howden 140 ½ - ½
Robert Broadbent 174 1 - 0
Leo A Keely 178 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

235 = (775 + 400 * (2 - 1)) / 5)

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