Event: Division B

Opponent Rating Result
William Gee 2087 0 - 1
Geoffrey Pennington 1780 ½ - ½
John A Crompton 1450 1 - 0
Nigel Bennett 1440 1 - 0
Jonathan Slater 1743 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1860 = (8500 + 400 * (3 - 1)) / 5)

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