Event: IM Brown

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Opponent	Rating	Result
Barry Fulthorpe	78	1 - 0
Mick Beavers	80	½ - ½
John Gibbs	129	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

229 = (287 + 400 * (1 - 0)) / 3)