Event: IM Brown

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Opponent Rating Result
Richard O Callis 139 1 - 0
Peter Micklethwaite 169 0 - 1
Jim E Vickery 169 1 - 0
Steve Parker 163 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

360 = (640 + 400 * (3 - 1)) / 4)

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