Plot summary
One of David's closest friends is called into question after a man dies during a mixed martial arts sparring match. When it turns out that this is not the first time such an event has happened, things look even worse. Charlie is busy practicing what little he knows about poker, so he can take Larry's spot in a tournament. Steven Culp, Lauren Vélez, Bruce McGill and Arye Gross guest star. Mathematics used: Kruskal's algorithm and Flow network
Credits
Adapted from Wikipedia contributors, Numbers season 3. HTML formatting and reference markers removed.