Event: Division 1

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Opponent Rating Result
John E Richards 1906 ½ - ½
Piotr Zielinski 1589 1 - 0
Indura Sapuarachchige 2013 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1836 = (5508 + 400 * (1 - 1)) / 3)

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