Event: IM Brown

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Opponent Rating Result
Samuel J Playford 1680 1 - 0
David Harasym 1792 0 - 1
Tim M Turner 1915 0 - 1
Chris Jardine 1794 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1795 = (7181 + 400 * (2 - 2)) / 4)

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