Event: IM Brown

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Opponent Rating Result
Bryan Hesler 142 ½ - ½
Robert Murray 127 1 - 0
Graham J Wilson 145 1 - 0
Michael A Fox 128 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

436 = (542 + 400 * (3 - 0)) / 4)

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