Event: Easter 2023 u-1400 rapidplay

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Opponent Rating Result
William Adam 1143 ½ - ½
Louis White 1578 0 - 1
Kevin Mitran 1102 ½ - ½
Sophie Mitran 964 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

997 = (4787 + 400 * (0 - 2)) / 4)

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