Sudoku 2016

Play free Sudoku Puzzles! Plain and simple. No hassle. Main features: - Simple and intuitive interface - 4 real different levels of challenge: Very easy, easy, medium and hard (hard is really hard, try it out!) - Hints if you get stuck - Progress saved automatically with every change - Undo movements - Use the "night mode" to reduce screen brightness during the night - Battery-friendly. Very low CPU usage - Portrait or landscape screen orientation