If you are interested in pathfinding and these kind of problems, I suggest to check out http://www.pathery.com/ http://www.pathery.com/ - NP complete K-Most-Vit

If you are interested in pathfinding and these kind of problems, I suggest to check out http://www.pathery.com/ http://www.pathery.com/ - NP complete K-Most-Vital-Node problem.