Printable Sudoku: uses, sizes and printing tips
Fresh sudoku puzzles every time: four medium puzzles per page, each with exactly one solution. Switch to easy or hard, choose 1 to 6 puzzles per page, and switch Show to Answer key to print the solutions.
How to print it
- Choose the paper size (US Letter, A4, Legal, A5 or Half Letter) and portrait or landscape — the page updates as you change settings.
- Choose the game and how many boards, cards or puzzles fit on a page; for bingo and sudoku click New numbers for a fresh set.
- Add a title or a name/date header if you want, or keep the page plain.
- Click Print / Save as PDF. In the print dialog choose “Actual size” (100%) and turn off “Headers and footers”.
Tips
- Print the answer key on a separate sheet so it does not spoil the puzzles.
- Every set of numbers has its own link — share the address and others get exactly the same cards or puzzles.
- Laminate a sheet or slide it into a sheet protector and use dry-erase markers to play again and again.
FAQ
How do I print the answers?
Set Show to Answer key and print — the same puzzles appear solved, with the given numbers in bold.
What are the rules?
Fill every row, column and 3 × 3 box with the digits 1 to 9 exactly once.
Are the puzzles and cards really random?
Yes. Bingo cards and sudoku puzzles are generated in your browser; every sudoku has exactly one solution. Click New numbers as often as you like.
Is it free, and do I need an account?
It is completely free with no sign-up and no download. Change the settings, print it or save it as a PDF, and bookmark the address — your settings are stored in the link.
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