Browser game
Fill each row, column and 3 × 3 box with the numbers 1 to 9. Every puzzle has exactly one solution, and your game is saved in this browser, so you can come back to it later.
Pick a square, then a number. With a keyboard, use the arrow keys and type 1 to 9. Backspace clears a square, N switches notes, and Ctrl+Z undoes.
Prefer paper? Open this puzzle in the Sudoku Maker to download it as a PDF.
Yes, in this browser only. Come back on the same device and your game continues where you left it. Nothing is stored on our servers.
Yes. Numbers are only removed while the puzzle still has a single solution, so you never have to guess.
The page address keeps the level and puzzle number, so bookmarking or sharing it brings back the same puzzle. Restart clears your numbers and starts it again.
Yes. The board fits the screen, and the number pad sits directly below it.