Sudoku - Classic Number Puzzle

A clean, beautifully designed classic sudoku puzzle game with five difficulty levels, daily challenges, smart hints, and detailed statistics.

Whether you are a beginner or an experienced puzzle solver, there is a challenge waiting for you. Choose from five difficulty levels and sharpen your logical thinking with every game.

🧩 Classic Sudoku Gameplay
Play the classic 9x9 number puzzle. Fill every row, column, and 3x3 box with the numbers 1 to 9. Each sudoku puzzle has exactly one solution, crafted for a fair and satisfying experience.

📅 Daily Challenges
Take on a new sudoku puzzle every day. Complete daily challenges to build your streak and track your progress on the calendar. You can go back and play any challenge you missed.

💡 Smart Hints
Stuck on a tough cell? The smart hint system teaches you solving techniques step by step. You can also choose to get the answer placed directly. A great way to improve your sudoku skills while you play.

📊 Detailed Statistics
Track your scores, fastest times, win rate, and win streaks for every difficulty level. Watch your progress as your problem-solving skills grow.

✏️ Notes and Tools
Use pencil notes to mark candidate numbers in each cell. Undo mistakes, delete entries, and use fast notes mode for quicker solving. Helpful tools that make every sudoku puzzle more enjoyable.

🎯 Key Features
- Five difficulty levels from Fast to Expert
- A new daily sudoku challenge with calendar tracking
- Smart hint system that teaches solving techniques
- Mistake tracking with a three-mistake limit
- Pencil notes and fast notes for advanced solving
- Undo, delete, and auto-complete tools
- Score tracking with bonuses for speed and accuracy
- Highlights for duplicate numbers and related cells
- Pause and resume at any time
- Works offline
- Clean, intuitive design for mobile

🏆 Every Level of Challenge
Start with easy sudoku to learn the basics, then work your way up to expert-level puzzles that require advanced techniques. Every puzzle is solvable with pure logic.

Sudoku is the classic brain training game for puzzle lovers of all skill levels.