Event: Division 1

Opponent Rating Result
Carsten Pedersen 2098 ½ - ½
Fredrik Ceder 1933 0 - 1
Surjit S Dhemrait 1587 1 - 0
Jean-Claude Sartenaer 1827 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1861 = (7445 + 400 * (1 - 1)) / 4)

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