How to Play
Your goal is to complete the 9×9 grid by filling empty cells with numbers 1-9, ensuring no digit repeats in any row, column, or 3×3 box. Use your mouse or touch screen to click or tap a cell, then select the number you want to place. Use the hint feature when you're stuck, and take your time solving each puzzle.
Mouse / Tap
Touch
Tips & Tricks
- Look for rows, columns, or 3×3 boxes that are nearly complete—these are easiest to solve first and unlock more
- Use the elimination method: if a number can only go in one spot within a row or box, place it there immediately.
- Start with cells that have the fewest possibilities to avoid getting stuck early in the puzzle.
- Don't guess randomly—Sudoku is always solvable through pure logic, so step back if you feel confused.
- Complete daily challenges to build streaks and improve your average solving time over weeks.
Frequently Asked Questions
Is Sudoku free to play?
Yes, Sudoku is completely free to play online. No download or account required—just open it in your browser and start solving immediately.
Can I play Sudoku on my phone?
Absolutely! Sudoku works on all modern devices including smartphones and tablets. The game automatically adjusts to your screen size for the best experience.
What difficulty levels are available?
Sudoku offers six difficulty levels ranging from easy for beginners to expert for advanced players. You can choose your preferred difficulty before each game.
About Sudoku - Pin.Games