Event: Division 2

Opponent Rating Result
Michael J Passmore 1646 0 - 1
Magda Rucka 0 0 - 1
Dave J Williams 1728 ½ - ½
Dougie Buchanan 0 1 - 0
Alan Papier 1750 0 - 1
Gareth Cullen 1715 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1073 = (6839 + 400 * (2 - 3)) / 6)

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