How do I play Sudoku?

Fill in the 9×9 grid so that each row, column, and 3×3 box contains all digits from 1 to 9 without repetition.

Is this Sudoku game free?

Yes, LoveSudoku is completely free to play with no downloads or registration required.

What difficulty levels are available?

We offer six difficulty levels: Beginner, Easy, Medium, Hard, Expert, and Evil.

Mistakes: 0/3

Time: 00:00

Beginner Easy Medium Hard Expert Evil

Mistakes: 0 / 3

Time: 00:50

Play Free Classic Sudoku Puzzles Online

Welcome to LoveSudoku! You are currently playing the Classic Sudoku (Beginner Mode). This is the ideal starting point to learn the logic of the 9x9 grid. Enjoy a smooth, ad-light experience directly in your browser without installing heavy apps.

How to Play Sudoku: Rules & Basics

Sudoku is a popular logic-based number placement puzzle. You don't need to be a math genius—you just need pattern recognition.

The 3 Golden Rules

To solve the puzzle, you must fill the grid so that every row, column, and 3x3 box contains the digits 1 through 9. Remember: No number can be repeated in any row, column, or box.

Beginner Strategy: Scanning & Notes

Start by "scanning" the grid for numbers that appear frequently. If you aren't sure about a number, use our Note Mode (pencil icon) to write down candidates. This is the secret to solving faster!

Why LoveSudoku is the Best Choice

We built this platform to offer a cleaner, faster experience than cluttered mobile apps.

Daily Puzzles & Brain Training

We update our grids every day. Playing a "Daily Sudoku" is a proven way to improve concentration and delay brain aging. Challenge yourself to beat your best time!

Smart Hints & Error Checking

Stuck on a tricky cell? Click the Hint button to understand the logic behind the move. Our system also highlights duplicates to help you spot mistakes instantly.

Ready for Harder Challenges?

Mastered the beginner level? Try switching to Medium or Hard difficulty. For a math twist, try our Killer Sudoku (Sumdoku) mode. You can also learn advanced strategies like X-Wing in our rules section.