Event: Bak

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Opponent Rating Result
Anthony J Lightowler 85 ½ - ½
Simon Hopker 97 0 - 1
Werner Rieser 96 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-174 = (278 + 400 * (0 - 2)) / 3)

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