Event: 480 Max

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Opponent Rating Result
Julian H Summerfield 143 ½ - ½
Keith Thomas 150 0 - 1
Julian H Summerfield 143 ½ - ½
Keith Thomas 150 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

147 = (586 + 400 * (1 - 1)) / 4)

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