Event: Ilkley Chess Club Championship

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Opponent Rating Result
Martin Hawkins 0 1 - 0
Bill Tait 133 ½ - ½
R (Bob) Leach 113 1 - 0
David W Adam 143 1 - 0
Lee Crawford 147 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

427 = (536 + 400 * (4 - 0)) / 5)

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