Event: Qualifying Group A

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Opponent Rating Result
Henry Spedding 1698 0 - 1
Nicholas Tweddell 1473 1 - 0
Roger Aris 1647 1 - 0
Alexander Adarski 1403 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1755 = (6221 + 400 * (3 - 1)) / 4)

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