Event: Division 4

Opponent Rating Result
John A Amison 1600 ½ - ½
Andrew Flint 1649 1 - 0
Alan J Nelder 1645 1 - 0
Danny Flintoft 1729 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1956 = (6623 + 400 * (3 - 0)) / 4)

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