Event: 6600-max Rapid-play

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Opponent Rating Result
Phil Maddocks 1772 0 - 1
Julian H Summerfield 1873 ½ - ½
Phil Maddocks 1772 1 - 0
Julian H Summerfield 1873 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1723 = (7290 + 400 * (1 - 2)) / 4)

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