Logic GAME
Play Sudoku
Fill the grid. Find your focus with four difficulty levels. Play free in your browser—no download required.
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About Sudoku
Play classic Sudoku with four difficulty levels, from single-step deductions to advanced puzzles. Each puzzle is designed to have a single solution. Pencil notes, undo and hints help you solve at your own pace. Pause to resume a run while this page stays open.
How to play Sudoku
- Choose Easy, Medium, Hard or Extra.
- Select a cell and enter a number from 1 to 9. Each row, column and 3 × 3 box must contain each number once.
- Use Pencil for candidate notes, Erase to clear a cell, Undo to reverse an edit, or Hint to reveal a number.
- Complete the grid to see your time and hints used.
Sudoku tips
Start with rows, columns or boxes that have the most numbers filled in. Use pencil notes to track possibilities and eliminate candidates.
Frequently asked questions
How do I play Sudoku?
Choose Easy, Medium, Hard or Extra. Select a cell and enter a number from 1 to 9. Each row, column and 3 × 3 box must contain each number once. Use Pencil for candidate notes, Erase to clear a cell, Undo to reverse an edit, or Hint to reveal a number. Complete the grid to see your time and hints used.
Is Sudoku free to play?
Sudoku is free to play in a web browser with no download required.
How long is a Sudoku game?
A typical run is a self-paced challenge, and you can replay whenever you want.
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