Event: 30 Minute Rapid

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Opponent Rating Result
Roger Clarke 0 1 - 0
Paul Rutter 1444 ½ - ½
Robert J Arthurton 1471 ½ - ½
Andrew T Watson 1429 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1186 = (4344 + 400 * (1 - 0)) / 4)

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