Free • No download
About Sudoku Puzzle
Try the online Sudoku Puzzle 9x9 for free without signing up. Sharpen your mind with logic challenges in Classic, Killer, Master, X-Sudoku, Windoku, Points modes – from easy to difficult!
How to play
Your task is to fill a 9×9 grid with numbers from 1 to 9 in such a way that each number occurs only once in every row, column, and each 3×3 section. Some cells are already completed — they serve as your initial hints. Start with those cells that have the most filled neighbours; this will make it easier to determine the right number due to fewer possible options. As you fill in the cells, the choices for the surrounding ones become more limited, revealing the solution step by step through logical deduction. Use the notes function to jot down potential numbers in a cell and cross them out as the grid fills. This tactic is particularly helpful on the Hard and Expert levels. Special modes introduce additional rules: in X-Sudoku, numbers must also be unique on both main diagonals; in Windoku, additional highlighted areas follow the same rule of uniqueness; in Killer Sudoku, groups of cells must sum up to a specified value; in Kropki, markers between cells indicate relationships — a white dot means the numbers differ by 1, a black dot means one number is double the other. Sharpen your mind!
Screenshots
Sudoku Puzzle FAQ
Is Sudoku Puzzle free to play?
Yes. You can play Sudoku Puzzle online for free without buying the game or creating an account.
Can I play on mobile or a Chromebook?
Yes. The game runs in a modern browser on phones, tablets, laptops, desktops, and Chromebooks.
Do I need to download anything?
No. Press Play and the browser game loads directly on this page.
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