Event: Altrincham

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Opponent Rating Result
Tanmay Madhusudhan 1635 1 - 0
Oskar Jackson 1471 ½ - ½
Sai Vaddhireddy 1655 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1587 = (4761 + 400 * (1 - 1)) / 3)

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