I'm going to have to wade through that for a few hours. ;).

By the way, when I first saw a Sudoku puzzle, in my mind I thought, "I wonder if these could be solved by iterating over the eigenstates of anys with various tests using Quantum::Superpositions to isolate possibilities and eliminate non-possibilities." While thinking through it I did some searching here at the Monastery and found someone's already been there and done that: SuDoKu solver.

While Googling I also discovered Sudoku solver in four lines (off site), written in Perl, along with an explanation. It seems someone's been up to some serious golf.

Fun stuff.