Event: Open Section

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Opponent Rating Result
Dylan E Cooper 1535 0 - 1
Martin J Chadwick 1297 1 - 0
Sandra G Blackburn 1549 ½ - ½
Alan M Paling 1915 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1474 = (6296 + 400 * (1 - 2)) / 4)

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