Event: Division 3

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Opponent Rating Result
Brian Stockham 117 0 - 1
Michael R Elgin 112 1 - 0
Hugh Norris 74 0 - 1
Robert HC Fisher 121 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

6 = (424 + 400 * (1 - 2)) / 4)

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