Event: Ipswich Chess Club Championship

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Opponent Rating Result
Odetta Kaminskiene 0 1 - 0
Jerzy Cholewinski 1839 0 - 1
Les J Jones 1744 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1061 = (3583 + 400 * (1 - 2)) / 3)

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