Sudoku Generator
Play and generate printable sudoku puzzles in your browser.
How To Play
Rules: Fill the 9×9 grid so that each row, column and thick-bordered 3×3 box contains digits 1–9 with no repeats.
Enter Numbers: Click a cell then tap a number below. Tap the same number again to clear it.
Notes: When Notes mode is active, digits are marked as small candidate numbers for deduction.
Tools: Undo reverts your last move. Erase clears the selected cell. Hint fills one correct number automatically.
Mistakes: Wrong entries count as a mistake. The game ends once you hit the mistake limit (shown above).
On desktop: use 1–9 for numbers, Arrow Keys to navigate, Backspace to erase, Ctrl+Z for undo.
How to Play Sudoku
Fill digits 1 to 9 on the grid. Each row, column and 3×3 subgrid cannot contain duplicate numbers. Select difficulty and click New Sudoku to start a puzzle.