Event: Ilkley Chess Club Championship

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

381 = (303 + 400 * (4 - 0)) / 5)

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