Plain Sudoku

Experience Sudoku the way it was meant to be played. Plain Sudoku brings you the classic puzzle experience in a clean, modern, and distraction-free interface. Whether you are a beginner looking to relax or a logic master seeking a challenge, our app provides smooth gameplay without the clutter. Why choose Plain Sudoku? We focused on the features that actually matter to Sudoku players. No flashy animations or confusing menus—just you and the puzzle. Key Features: Three Balanced Difficulty Levels: Start with Easy to warm up, move to Medium for a standard workout, or test your logic with Hard puzzles. Smart Pencil Mode: easily switch between "Pen" for final answers and "Pencil" for notes. Intelligent Validation: The game checks your moves against the actual solution, letting you know instantly if you've made a mistake (Red) or locked in a correct number (Blue). Quality of Life Improvements: Auto-Hide Inputs: Number buttons automatically disappear once you've placed all 9 of them correctly. Locked Answers: Correctly placed numbers are locked in to prevent accidental changes. Highlighting: Tap any number to instantly see where else it appears on the board. Auto-Save: Life happens. Close the app anytime, and your game will be waiting exactly where you left off. Classic Design: A minimalist layout that is easy on the eyes and optimized for all screen sizes. Perfect for: Daily brain training and mental fitness. Relaxing during commutes or breaks. Fans of classic pen-and-paper logic puzzles. Download Plain Sudoku today and enjoy the pure satisfaction of solving.