Event: Sheffield Chess Centre U1750

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Opponent	Rating	Result
Callum Cosens	1699	1 - 0
Wade Udin	1389	0 - 1
Emirasan Umerov	1428	0 - 1
Mohammed Rohman	1483	1 - 0
Brian Butterworth	1351	0 - 1
Mindaugas Mikalajunas	1461	1 - 0

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

1469 = (8811 + 400 * (3 - 3)) / 6)