Event: 6-Board Division 1

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Opponent Rating Result
John W Atkinson 1949 0 - 1
Andrew D Bettley 1772 1 - 0
Jonathan R Slater 1550 1 - 0
Paul SN Kendall 1891 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1891 = (7162 + 400 * (2 - 1)) / 4)

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