Event: U1800 Cup

Opponent Rating Result
Alonso Paez 1653 1 - 0
Daniel Such 1473 0 - 1
Ken Lunn 1503 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1543 = (4629 + 400 * (1 - 1)) / 3)

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