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Sudoku solver based on the initial work of Michael Kennett
Console based sudoku solver. It is a modified version
of the solver included in the Ubuntu distribution of Linux,
and has similar functionality to the original by Michael Kennett.
New features:
- You interactively can open and save boards with it.
- The title of the board can be edited.
- Added early contradiction check to detect if the board is unsolvable:
1 2 . | . . . | . . .
. . . | 1 2 . | . . .
. . . | . . . | 1 2 .
-------+-------+-------
2 1 . | . . . | . . .
. . . | 2 1 . | . . .
. . . | . . . | 2 1 .
-------+-------+-------
. . . | . . . | . . .
. . 2 | . . 1 | . . .
. . 1 | . . 2 | ...