Event: 4-Board Division 2

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Opponent Rating Result
Peter T Perkins 118 ½ - ½
Ron V Kemp 88 1 - 0
Giles Dunn 134 0 - 1
Philip A Wood 84 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

6 = (424 + 400 * (1 - 2)) / 4)

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