Event: Chessmaster Challenge 80/10

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Opponent Rating Result
Glen Smith 0 1 - 0
Tony Lee 1177 1 - 0
Andrew T Watson 1397 0 - 1
Paul Terry 1719 0 - 1
Simon Green 1620 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1103 = (5913 + 400 * (2 - 3)) / 5)

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