A Sudoku solver that uses a brute-force algorithm to find a solution to
any valid puzzle.

To compile:
  $ mkdir bin
  $ scalac src/sudoku/*.scala -d bin

To run:
  $ cd bin
  $ scala sudoku.Sudoku <single_puzzle>
  $ scala sudoku.SudokuBatch <puzzle_set>

My Ruby-based solver has a collection of sample puzzles: http://github.com/msmith/sudoku