Event: The Chess Centre - Guiseley (Class 2) Junior League

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Opponent Rating Result
Charlie Alcock 546 1 - 0
Lee Crebbin 511 1 - 0
Sebastian Harjai 914 0 - 1
Sebastian Harjai 929 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

825 = (2900 + 400 * (2 - 1)) / 4)

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