Event: Guildford Internal Rapidplay

PDF Excel

Opponent	Rating	Result
Mahmoud Jabr	0	0 - 1
Liubava Maksak	0	0 - 1
Michael J Gunn	0	0 - 1

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

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