sudoku solver by darsie 1.6

sudoku solver by darsie project is a console-based sudoku solver.

sudoku solver by darsie is a console program that reads data from stdin (typically redirected from a file) and prints a possibly partial result. Definitive numbers are printed all over their fields.

Other fields contain the numbers that are not yet excluded.

Three solving rules are implemented and most sudokus are solved in a few milliseconds.

Usage:
sudoku
data file format:
enter the numbers in the first 9 lines.
fill empty fields with non numeric characters or 0.
any lines after that are ignored.

A possibly partial result will be printed. Definitive numbers are printed all over their field. Other fields contain the numbers that are not yet excluded.