Event: 560 Max

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Opponent Rating Result
David Thomson 158 0 - 1
Marek J Soszynski 149 0 - 1
David Thomson 158 0 - 1
Marek J Soszynski 149 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-147 = (614 + 400 * (0 - 3)) / 4)

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