Event: IM Brown

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Opponent Rating Result
Karim Khan 1774 0 - 1
R Malcolm Hara 1659 1 - 0
Gary Hinchcliffe 1825 0 - 1
John Hipshon 1684 1 - 0
Jay Ryalls 1725 1 - 0
Dominic Gallagher 1636 ½ - ½
Jeff Dutton 1578 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1812 = (11881 + 400 * (4 - 2)) / 7)

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