Event: Division 3

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Opponent Rating Result
John D Manger 1705 0 - 1
Tarsem Dhillon 1623 ½ - ½
Ben W Vaughan 1630 1 - 0
Granville Hill 1450 1 - 0
David Gamble 1398 0 - 1
Mick Brown 1454 ½ - ½
George Gowers 1150 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1430 = (10410 + 400 * (2 - 3)) / 7)

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