Event: U1850

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Opponent	Rating	Result
Sanjoy K Banerjee	1708	0 - 1
Jonathan Miller	1701	½ - ½
Alan M Llewellyn	1578	1 - 0

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

1662 = (4987 + 400 * (1 - 1)) / 3)