Event: 6-Board Division 1

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Opponent Rating Result
Andrew D Bettley 153 ½ - ½
David J Gibson 113 0 - 1
Paul Kennedy 125 ½ - ½
David J Gibson 113 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

126 = (504 + 400 * (1 - 1)) / 4)

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