Event: Division 2

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Opponent Rating Result
Lukasz Marcin Walijewski 1751 ½ - ½
Anthony R Meakin 1570 0 - 1
Alex D Pready 1783 0 - 1
R Arthur Hall 1457 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1440 = (6561 + 400 * (0 - 2)) / 4)

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