Event: Chessmaster Challenge 80/10

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Opponent	Rating	Result
Tony Gill	1351	0 - 1
Keith May	1092	0 - 1
Gary Winson	1580	0 - 1

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

941 = (4023 + 400 * (0 - 3)) / 3)