Event: West London Qualifier

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Opponent Rating Result
Kabir A Ghosh 1657 ½ - ½
Keira Wang 0 1 - 0
Hannah Hasanath-Taher 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

552 = (1657 + 400 * (1 - 1)) / 3)

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