Exam - 2009 - 6/10

Eight job candidates are seated in a featureless room.
Simple rules are given. Such as, if you leave the room, you are disqualified. If you speak with the guard, you are disqualified. Then they are given 80 minutes to solve an enigmatic question.
After a few elections, the remaining realize there are rules, yet outside the rules, anything goes.
Treachery, deception, violence. Personalities unleash. Mind games yield to mob rules.
Taut little suspenser, though feels a wee bit stagebound.