I live in the U.S. but I'm from Ukraine. Would that count for your project? If so then I'd be happy (as indicated by the happy face) to play against you.
If michael5000 set out to play, not only someone from each country, but also a representative from each country who was now living in a different country, that would make 239 home countries X 238 away counties = 56,882 opponents.
If only there were a set of national trophies to collect ...
http://www.chess.com/forum/view/general/im-king-of-the-world
DeepGreene wrote: Another cool suggestion along these lines (that came up in an old forum I won't be able to find): Add a new filter to the Member Map called "Past Opponents" so that you can see your chess.com career writ large on a world map.
It's a change that would definitely bring me back to the Map from time to time.
http://www.chess.com/forum/view/community/can-i-see-a-map-of-all-the-people-i-have-played