Event: Kenneth Appleby

PDF Excel

Opponent	Rating	Result
Neil Griffiths	129	0 - 1
N Mukelabai	96	0 - 1
David Halpin	61	1 - 0
Alex King	64	0 - 1
Ian D Strickland	122	½ - ½

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

-66 = (472 + 400 * (1 - 3)) / 5)