Event: Division 1

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Opponent Rating Result
Martyn Goodger 2116 ½ - ½
Paul R Kemp 1987 1 - 0
Norman A Hutchinson 1947 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2017 = (6050 + 400 * (1 - 1)) / 3)

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