Sudoku

Fill the 9×9 grid so every row, column, and 3×3 box contains the numbers 1 through 9 with no repeats. It’s a classic logic puzzle that challenges your reasoning skills one number at a time.

You can play this sudoku game online directly on your device without downloading an app. Whether you’re a beginner or a seasoned solver, sudoku online free daily puzzles give you a fresh challenge every day.

How to Play Sudoku Online

• The grid is divided into 9 rows, 9 columns, and 9 smaller 3×3 boxes.
• Some cells are already filled in as starting clues.
• Click an empty cell and enter a number from 1 to 9.
• Each row, column, and 3×3 box must contain every number exactly once — no repeats.
• Use the pencil/notes mode to jot down possible candidates for a cell.
• Fill in every empty cell correctly to complete the puzzle.

How to Solve Sudoku Puzzles
Want to get better at this sudoku game online? Try these tips:

• Start with rows, columns, or boxes that already have the most numbers filled in.
• Look for cells where only one number can possibly fit (naked singles).
• Scan for numbers that can only go in one spot within a row, column, or box (hidden singles).
• Use notes to track candidate numbers and eliminate options as you go.
• Work through easy sections first before tackling harder parts of the grid.
• Take breaks if you get stuck — a fresh look often reveals missed possibilities.

Sudoku FAQs

Is this sudoku online free to play?
Yes, you can play the game online for free, with sudoku online free daily puzzles updated regularly.

Do I need to download anything to play?
No, this sudoku game runs entirely in your browser — no downloads or installs required.

What if I get stuck on a puzzle?
Most versions offer hints, error checking, or the option to reset and start over.

What is the best strategy for beginners?
Start with the easiest cells first — those with the most existing numbers around them — and use notes to track possibilities before committing to a number.