Sudoku - Classic Brain Puzzle

Train your brain with Sudoku - Classic Brain Puzzle, the logic game that sharpens your mind while you relax. Whether you need a quick mental break or a deeper puzzle challenge, this game delivers hours of engaging number-placing fun that keeps your thinking sharp.

The built-in hint system teaches you solving strategies step by step, explaining not just the answer but the reasoning behind it. Helpful animations and clear visual design make learning intuitive, whether you're picking up sudoku for the first time or advancing toward mastery. You'll understand the logic, not just fill in numbers.

Multiple puzzle variations keep gameplay fresh: classic sudoku, squiggly, X, and Color modes spread across 8 difficulty levels—from very easy to extreme challenges. With over 15,000 free puzzles available and daily competitions through Champions Challenge, there's always a new puzzle waiting. Track your progress with detailed career statistics so you can watch your skills improve over time.

Customize your solving experience with pencil marks for candidates, auto-highlighted numbers for intelligent hints, unlimited undo and redo, error checking, and a timer you can toggle on or off. Dark Mode protects your eyes during extended play sessions. The game auto-saves your progress, so you can pause anytime without losing your place.

Create your own puzzles using the custom number puzzle tool—compose sudoku from scratch or convert puzzles from paper into the app. Compete globally in the Champions Challenge for extra motivation and rewards. Share your achievements and puzzle creations with friends via social channels.

The app adapts beautifully to both phones and tablets, with support for various numeral systems including Chinese numbers. Gameplay remains smooth and responsive across all devices.

Sudoku - Classic Brain Puzzle is free to download and play with ads. If you prefer uninterrupted gameplay and want to unlock exclusive features, Premium Access removes ads entirely and grants access to bonus content. Either way, you get a complete, polished sudoku experience designed to exercise your logic and keep your mind engaged.