Event: IM Brown

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Opponent Rating Result
John Foo 133 1 - 0
Steven Revell 158 1 - 0
Steve Parker 163 ½ - ½
Neil Griffiths 131 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

446 = (585 + 400 * (3 - 0)) / 4)

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