Event: Weymouth U1850 2023

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Opponent Rating Result
John Shaddick 1658 ½ - ½
Christine F Constable 1488 ½ - ½
Chris Carpenter 1561 ½ - ½
Robert A Lanzer 1782 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1722 = (6489 + 400 * (1 - 0)) / 4)

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