Sudoku4u: Sudoku Free Kindle Fire block puzzle games free for adults & offline relaxing Classic Math brain Games for 2 adults and Seniors ~ Time Killer Mind App!
- Sudoku puzzles come in 4 difficulty levels - easy Sudoku, medium Sudoku, hard Sudoku and expert Sudoku! Perfect for Sudoku beginners and advanced players!.
- Intelligent Hints - Get hints when you are stuckNote tracker to track your notes.
- Highlight Duplicates to avoid repeating numbers in a row, column and block..
- Undo your moves to revert back to the previous states..
- Keep record of your best time and every time in every difficulty levels..
- No Wifi games, play offline and without internet..