Event: Ivan Gromov Online Schools Chess League

PDF Excel

Opponent	Rating	Result
Tong Wu	0	0 - 1
Jack Spicer	0	0 - 1
Shourya Gupta	1679	0 - 1
Jan Siemens	0	0 - 1

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

20 = (1679 + 400 * (0 - 4)) / 4)