Event: Ipswich Chess Club Championship

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Opponent Rating Result
Yaroslav Orishko 2014 0 - 1
Alex Bujnowski 1468 1 - 0
Jerzy Cholewinski 1839 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1907 = (5321 + 400 * (2 - 1)) / 3)

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