Event: Chessmaster Challenge 80/10

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Opponent	Rating	Result
Keith May	1096	1 - 0
Andrew T Watson	1516	0 - 1
Doug Fossey	999	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1337 = (3611 + 400 * (2 - 1)) / 3)