Event: Division 3

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Opponent Rating Result
Richard Sida 108 ½ - ½
David Lacey 0 ½ - ½
Dariusz Stachowski 107 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-62 = (215 + 400 * (0 - 1)) / 3)

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