Event: Ilkley Chess Club Championship

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Opponent Rating Result
Stuart M Johnson 114 1 - 0
Robert Derrington 0 1 - 0
Lili Szasz 54 ½ - ½
C Barry Taylor 135 ½ - ½
Chris Wright 168 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

174 = (471 + 400 * (2 - 1)) / 5)

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