Excel formula

Hi Everybody,

I am making a standings list for a league we are playing. Now i have one problem. there are 6 rounds en at the end of the league i want to know how many rounds every players had played. I give in the scores round by round en I want a formula That calculate how many rounds that player had played. 

example:  Jarno de wachter had played Rounds 1,2 4 and 6 I fill in the points and i want that in cel N3 4 comes because he played 4 rounds of 6. That I want to do for each player. How do I do that?