Event: 6-Board Division 1

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Opponent Rating Result
Thomas L Hackett 1857 0 - 1
Kristian C Usifoh 1907 1 - 0
John W Atkinson 1990 ½ - ½
David W Stephenson 1784 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1985 = (7538 + 400 * (2 - 1)) / 4)

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