Event: IM Brown

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Opponent Rating Result
Geoffrey D Brown 148 ½ - ½
Jael De Sousa Muachikape 132 0 - 1
Eric P Davies 100 1 - 0
Peter Catt 137 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

29 = (517 + 400 * (1 - 2)) / 4)

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