Event: Division 3

Opponent Rating Result
Alan M Paling 150 ½ - ½
Karol Grzybowski 146 0 - 1
Philip N Birks 142 ½ - ½
George J Scattergood 137 1 - 0
John R Booth 144 ½ - ½
Alan M Paling 150 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

145 = (869 + 400 * (1 - 1)) / 6)

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