Event: Division 3

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Opponent Rating Result
Ian J Philipson 127 0 - 1
Alan Smith 131 ½ - ½
Martin G Fletcher 92 ½ - ½
Tony Demarco 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

88 = (350 + 400 * (1 - 1)) / 4)

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