Event: Division 3

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Opponent Rating Result
Kacper Drukarczyk 1614 ½ - ½
Arnold Peace 1660 0 - 1
Paul Silverman 1623 1 - 0
Frank C Jimenez 1573 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1518 = (6470 + 400 * (1 - 2)) / 4)

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