Event: Chessmaster Challenge 80/10

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Opponent Rating Result
Michael Brant 978 1 - 0
Paul Terry 1746 0 - 1
Robert J Arthurton 1593 ½ - ½
Paul Rutter 1416 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1533 = (5733 + 400 * (2 - 1)) / 4)

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