Release 1

Sudoku

$ ./sudoku.out --help
Usage:
    ./sudoku.out            - Run with default difficulty.
    ./sudoku.out <number>   - Where number is the number of cells that are going to be filled. [1-80]

Solver

Check the test folder for example input files.

$ ./solver.out --help
Usage:
    ./solver.out file.txt
    ./solver.out < file.txt