Event: Richard Furness League

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Opponent Rating Result
Daniel Robinson 1492 0 - 1
Colin Mather 1452 ½ - ½
Peter Morgan 1650 0 - 1
Phil Dawson 1100 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1324 = (5694 + 400 * (1 - 2)) / 4)

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