Event: Burns Summer Tournament

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Opponent Rating Result
Ian Jewsbury 1668 0 - 1
Andrew Walker 1391 ½ - ½
Dave Young 1413 1 - 0
Robert Dennington 1599 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1418 = (6071 + 400 * (1 - 2)) / 4)

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