Event: Chessmaster Challenge 80/10

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Opponent Rating Result
Gerry Lee 1665 1 - 0
Paul Terry 1792 0 - 1
Glen Smith 1135 1 - 0
Tony Lee 1242 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1559 = (5834 + 400 * (2 - 1)) / 4)

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