Event: IM Brown

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Opponent Rating Result
Chris G Willey 139 ½ - ½
D Michael Denison 165 ½ - ½
Michael I Connor 147 0 - 1
Samuel J Playford 122 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

43 = (573 + 400 * (0 - 1)) / 4)

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