Event: Peter Harrison Knockout Cup

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Opponent Rating Result
Richard Batey 1940 ½ - ½
Michael Ashworth 2090 0 - 1
Kirill Shcherbina 1907 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1979 = (5937 + 400 * (1 - 1)) / 3)

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