Sudoku for beginners and advanced players. Start from beginning level and enjoy the game, exercise your brain, logical thinking and memory, or try hard levels to give your mind a real workout. These cool features will make sudoku easier for you: hints, auto-check, and duplicates highlight. Features ✓ Smart logic system will verify whether your step is working or not ✓ Highlight duplicates to avoid repeating numbers in a row, column and block ✓ Hint can help you when you are stuck ✓ Unlimited Undos. ✓ Auto-save. ✓ Highlighting of a row, column and box related to the selected cell ✓ Eraser. Get rid of all mistakes Highlights • 9x9 grid • 4 levels of difficulty: easy, medium, hard, and expert • Support both phones and tablets • Simple and intuitive design Enjoy!