Event: IM Brown

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Opponent Rating Result
Stephen Forbes 115 1 - 0
Dave Colledge 141 1 - 0
Nathaniel Holroyd-Doveton 141 1 - 0
Joe Varley 156 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

538 = (553 + 400 * (4 - 0)) / 4)

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