Event: Ilkley Chess Club Championship

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Opponent Rating Result
John Link 102 ½ - ½
Lee Crawford 147 0 - 1
Martin Hawkins 0 0 - 1
David W Adam 143 0 - 1
Marc Turu 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-82 = (392 + 400 * (1 - 3)) / 5)

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