Event: July/August 2023 rapidplay games

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Opponent Rating Result
Lawrence Waller 327 1 - 0
Jan Szarek 517 0 - 1
Jan Szarek 517 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

320 = (1361 + 400 * (1 - 2)) / 3)

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