Event: Ilkley Chess Club Championship

Opponent Rating Result
David W Adam 143 ½ - ½
Bill Tait 133 1 - 0
Marc Turu 0 1 - 0
Martin Hawkins 0 1 - 0
John Link 102 0 - 1
R (Bob) Leach 113 1 - 0
Lili Szasz 54 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

306 = (545 + 400 * (5 - 1)) / 7)

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