Event: May/June 2023 classical

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Opponent Rating Result
Ishaan Chadha 1099 0 - 1
Lewis O'Brien 0 1 - 0
Louis Jones 1131 0 - 1
Siddharth Sethi 1446 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

819 = (3676 + 400 * (1 - 2)) / 4)

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