Event: Rapid Play

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Opponent Rating Result
Peter Holman 1570 0 - 1
Peter Holman 1570 1 - 0
Paul A Chaplin 1345 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1628 = (4485 + 400 * (2 - 1)) / 3)

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