Please consider trying out our new Sudoku Game "Crazy Sudoku" on Google Play: Crazy Sudoku
Features:
• Thousands of Sudoku puzzles with a wide range of difficulties
• 9 levels for difficulty (Trivial, Easy, Medium, Hard, Very Hard, Extremely Hard, Insane, Cruel, Impossible)
• Puzzles with SE Ratings from 1.2 - 10+
• Auto-save
• Persistent Undo and Redo
• Ability to check for correctness
• Optional intersection highlighting
• Optional haptic feedback
• Solution time statistics