Event: County Championship

Opponent Rating Result
Peter N Walker 0 0 - 1
Raymond J Ilett 1825 0 - 1
Qais Karimi 0 1 - 0
Daniel J Wells 1989 ½ - ½
Denis Georgiou 1846 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1132 = (5660 + 400 * (2 - 2)) / 5)

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