Please see the LICENSE file for details on copying and usage.

Sudoku E-solver -('E' stands for 'Eleonora', not for 'electronic').
===============

Implements simple brute force sudoku puzzle solver with some optimizations.
Useful for testing, experimentin, playing, etc.. Enjoy!

Build:
-----

 $ make

Usage:
-----

 $ ./sudoku-esolver --help

  usage: ./sudoku-esolver [-vh] [-s N] [-n N] [sudoku_file ...]
    --help, -h       - this usage message.
    --verbose, -v    - increase verbosity - show sudoku.
    --sudoku, -s NUM - solve specified puzzle.
    --number, -n NUM - solve NUM of puzzles  (default 16384).

This has simple internal puzzle collection and is able to use external
files with puzzles. File format is OpenSudoku compatible (see references
below).

Usage examples:
--------------

$ ./sudoku-esolver 
done 16384 puzzles in 720124591 nanoseconds (average 43952)

$ ./sudoku-esolver -s 1 -n 100
done 100 puzzles in 014799533 nanoseconds (average 147995)

$ ./sudoku-esolver -s 1 -n 100 -v 
done 100 puzzles in 016997838 nanoseconds (average 169978)
Sudoku 1:
  0  1  6  2  3  0  0  0  0          8  1  6  2  3  7  4  5  9
  2  0  0  0  0  4  0  0  8          2  5  3  1  9  4  7  6  8
  0  7  0  0  0  0  0  2  0          9  7  4  8  5  6  3  2  1
  0  3  0  0  6  0  9  0  0          4  3  5  7  6  8  9  1  2
  0  0  1  0  0  0  6  0  0          7  8  1  9  4  2  6  3  5
  0  0  9  0  1  0  0  4  0          6  2  9  5  1  3  8  4  7
  0  4  0  0  0  0  0  7  0          1  4  8  3  2  9  5  7  6
  5  0  0  4  0  0  0  0  3          5  6  7  4  8  1  2  9  3
  0  0  0  0  7  5  1  8  0          3  9  2  6  7  5  1  8  4

References:
----------

Sudoku puzzle sets examples:

http://opensudoku-android.googlecode.com/files/gnome-sudoku_easy.opensudoku
http://opensudoku-android.googlecode.com/files/gnome-sudoku_medium.opensudoku
http://opensudoku-android.googlecode.com/files/gnome-sudoku_hard.opensudoku
http://opensudoku-android.googlecode.com/files/gnome-sudoku_very_hard.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs4-easy.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs4-medium.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs4-hard.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs4-very_hard.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs5-easy.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs5-medium.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs5-hard.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs5-very_hard.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs6-easy.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs6-medium.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs6-hard.opensudoku
http://opensudoku.p43.eu/gnome-sudoku/gs6-very_hard.opensudoku
http://opensudoku.p43.eu/noponies.sdm
http://www.sudocue.net/learningcurve.sdm
http://www.sudocue.net/Superiors.sdm
http://www.sudocue.net/almostdn.sdm
http://www.sudocue.net/snow2005.sdm
http://www.sudocue.net/top10000.sdm