Event: Summer Rapidplay

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Opponent Rating Result
Freya Hind 577 1 - 0
Francis Batchelor 1980 0 - 1
Tim Hind 1000 ½ - ½
Toefl Lankapura 1100 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1064 = (4657 + 400 * (1 - 2)) / 4)

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