Tentaizu

Can someone explain what the parts of this code do? http://pastebin.com/Tx4e77V7

There are no comments in the code


http://green-oval.net/cgi-board.pl/g/thread/14609694

Here is my thread from /g/ talking about the premise of the program

>>15
It's not the only good solution, but it's a good solution because it's simple to code.

You could set it up as a set of equations for binary integer programming, but these problems are usually NP-hard when generalized, so you probably won't find an efficient solution for all cases.