Event: GCC Chessable RP

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Opponent Rating Result
Michael J Gunn 0 ½ - ½
Julien M Shepley 0 0 - 1
Sean Sussex 0 1 - 0
Darius Kvitnickas 0 0 - 1
Richard Duncalfe 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-160 = (0 + 400 * (1 - 3)) / 5)

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