Event: Chessmaster Challenge 80/10

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Opponent Rating Result
Tony Gill 1354 1 - 0
Alfie Simpson 1355 1 - 0
Paul Terry 1799 1 - 0
Andrew T Watson 1522 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1908 = (6030 + 400 * (4 - 0)) / 4)

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