Sudoku
Fill the grid so every row, column and box has 1 to 9.
How to play Sudoku
- Click a cell, then a number
- Keyboard: arrows to move, 1–9 to enter, N for notes, Z to undo
About Sudoku
Sudoku is the world's favorite number puzzle. Fill the 9×9 grid so that every row, every column and every 3×3 box contains the digits 1 to 9 exactly once. Each puzzle has one unique solution. The difficulty grows from Easy to Expert as you solve more puzzles. Use notes for candidates and hints when you get stuck. Your game saves automatically.
Tips
- Scan each row, column and box for the digit that only fits in one place.
- Use notes mode to track candidates in hard puzzles.
- Three mistakes end the puzzle, so use notes when unsure.
📖 Read the guide: Sudoku Tips for Beginners: 7 Techniques to Solve Any Easy Puzzle →
Sudoku is free to play on GameChakra. It works in any modern browser on mobile, tablet and desktop, with no download or sign-up. Your scores, XP and achievements are saved automatically on your device.
