Movie Where People Were Forced to Shoot Each Other?

[quibbler101]

Hi!  I'm hoping that somebody can help me here as this has been bugging me for months...so I once saw a trailer on IMDB for a non-English movie where a bunch of people were taken, forced to stand in a circle, and point a gun at the person in front of them.  Then one of the kidnappers announces to them that he'll do a countdown, and once he gets to zero, they have to pull the trigger.  The trailer fades out with the kidnapper reaching zero.  It was also black and white, and I believe the setting was in a large bathroom...I remember seeing lots of tiles.  I thought it looked interesting but never noted down the title of the movie.  If anybody could help, that would be really awesome.  Thanks!

[Rayo Casablanca]

That is the French film 13 TZAMETI (05). http://www.imdb.com/title/tt0475169/

[quibbler101]

You're awesome.  Thank you!!