Event: Cornwall Quickplay League 2023

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Opponent Rating Result
Ian Renshaw 1481 1 - 0
Ian Renshaw 1481 ½ - ½
Petra Nunn 1940 0 - 1
Petra Nunn 1940 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1811 = (6842 + 400 * (2 - 1)) / 4)

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