This is a program for solving the little Japanese number crosswords
that have been popping up all over newspapers and the web lately. They are known
as Sudoku and can be quite
frustrating to solve manually, although the rules are simple.
The program will solve any given configuration of initial clue numbers, provided
a solution exists. And it will also tell you (in case you wanted to know)
exactly how long it needed to "think." It's pretty fast. Try it!