Event: City Chess League 2014-15

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Opponent Rating Result
Robert F Willmoth 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Georgios Bakoloukas 0 1 - 0
Santosh Pandit 0 1 - 0
David A Tidmarsh 0 1 - 0
Alan Bradley 0 0 - 1
David J Wilson 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

80 = (0 + 400 * (3 - 2)) / 5)