Jan Rychtář
- Forum posts: 13
May 13, 2013, 1:15:13 AM via Website
May 13, 2013 1:15:13 AM via Website

* unlimited number of puzzles for free
* 3 levels of difficulty - easy, medium, hard
* Undo/Redo
* Autosave
* Conflict highlighting
* Selected number highlighting
Sudoku