Solves any Sudoku puzzle using brute force and Donald Knuth's Dancing Links

Usage:

sudoku.py [-ma] [-p puzzle] [-f filename] [-g]

Options:
	-h, --help            show this help message and exit
	-f FILE, --file=FILE  Read puzzles from file
	-p PUZZLE, --puzzle=PUZZLE
                    Solve single puzzle
	-g, --generate        
	-a, --all             Find all solutions
	-m MAX, --max=MAX     Find first N solutions
	-w WRITE_PNG, --write-png=WRITE_PNG
                    Write out PNG of board

Writing out a PNG requires the PIL library to be installed.

board.py can also be used for N-queens.