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Sudoku
Classic logic number puzzle. Multiple difficulty levels, daily challenges.
Free ForeverNo DownloadPlay in BrowserMobile Friendly
How to Play
Fill the 9×9 grid so each row, column, and 3×3 box contains 1-9 without repetition.
Objective
Fill the 9×9 grid with digits 1-9 so that each row, each column, and each of the nine 3×3 boxes contains all digits from 1 to 9 without repetition. Some cells are pre-filled (clues); use logic to complete the rest.
Controls
• Tap a cell to select, then tap a number on the keypad to fill • Keyboard: 1-9 to fill, Backspace/Delete to erase • Arrow keys ↑↓←→ to move selection • N to toggle Notes, H for Hint, C to Check, P to Pause • Notes mode: toggle to mark candidate numbers in cells • Auto Notes: one-tap fill all candidates for empty cells • Hint: automatically fills the correct number (3 per game) • Check: highlight all incorrectly placed numbers • Undo: revert the last move • When you place a correct number, notes with that number in the same row/column/box are auto-cleared
Tips & Strategy
• Start with rows, columns, or boxes that have the most clues • Use notes to mark candidates and eliminate possibilities • When a number has only one possible spot in a row/column/box, place it directly • Look at intersections: constraints from both a row and column can pinpoint a number • Never guess — every Sudoku step has a logical basis
Frequently Asked Questions
How to play Sudoku?
Classic logic number puzzle. Multiple difficulty levels, daily challenges. Open it directly in your browser and start playing instantly — no setup needed.
Is Sudoku free?
Yes, all games on GameHub are completely free to play with no signup required.
Can I play Sudoku on mobile?
Yes! All games support touch controls. Just open the page in your mobile browser and play.
Do I need to download Sudoku?
No download needed. All games run in your browser — just open the page and start playing immediately.