Event: Chessmaster Challenge 80/10

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Opponent Rating Result
Alfie Simpson 1166 1 - 0
Paul Terry 1789 0 - 1
Tony Gill 1351 1 - 0
Alan Ward 1358 1 - 0
Robert J Arthurton 1672 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1547 = (7336 + 400 * (3 - 2)) / 5)

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