Event: Division 4

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Opponent Rating Result
Richard P Cantliff 126 0 - 1
Stuart E Hull 99 ½ - ½
Julian P Cook 90 1 - 0
Andrew Mowat 117 ½ - ½
Harry Gardiner 104 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

27 = (536 + 400 * (1 - 2)) / 5)

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