Event: Cambs Division 1

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Opponent Rating Result
Peter N Walker 1923 ½ - ½
Agoston Mihalik 2256 0 - 1
Raymond J Ilett 1890 0 - 1
Samuel Caraway 1786 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1864 = (7855 + 400 * (1 - 2)) / 4)

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