What do you mean by "How many flags are missing from your chess.com passport?"
How many flags are missing from your chess.com passport?
Sort:
In the Prizes section of your chess profile, you will find Passport consisting of 241 flags from all countries
okay, thx. 
You need to play chess with players from 129 countries,
Okay.
How many are there ? I played chess with players from 156 different countries
To my 108
, and to you?