Open Sudoku

Open Sudoku is an open source Sudoku game.

Features:
- Without ads (we hate it as much as you)
- Puzzles can be downloaded from web, entered by hand or generated on project's homepage
- Game stats (time spent, mistakes)
- Next step hints with multiple strategies suggestions ()
- Import and export from/to a file
- Visual themes including custom theme editor
- Several input modes (finger-friendly numpad, popup, keyboard etc.)
- Double pencil marks
and more.

Go to http://opensudoku.moire.org for more information.

Recent changes:
Changes in v4.3:
* New "Hint" strategies implemented
* Fixes (invalid puzzles, landscape mode, puzzle editor)
* Translations updates

Open Sudoku 4 brings with it a complete code rewrite, new features and multiple improvements:
* Import/export Sudoku from various sources
* Edit/create your own Sudoku puzzles with verification of it's validity
* Use "Hint" to see next step hints when you get stuck
* Double pencil marks (optional)
And much more. Go to the project page to see full change log.