Event: Chessmaster Challenge 80/10

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Opponent	Rating	Result
Gary Winson	1538	0 - 1
Robert Newton	0	1 - 0
Tony Gill	1327	½ - ½

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

955 = (2865 + 400 * (1 - 1)) / 3)