Event: June Swiss 2023 Open

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Opponent Rating Result
Dave Dempster 1857 1 - 0
Biran S Shah 1795 1 - 0
David J Payne 1759 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2204 = (5411 + 400 * (3 - 0)) / 3)

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