FREE PRINTABLE SUDOKU

Free Printable Sudoku

Pick a level by how many clues you want, then print a 9x9 sudoku and its answer key. Every puzzle has exactly one solution.

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TOOL 10

Make a sudoku worksheet

Pick how many clues you want, then print a 9×9 sudoku with its answer key. Every puzzle has exactly one solution, checked by a separate verifier.

PRINTABLE SUDOKU GUIDE

Free printable sudoku puzzles with answers

Print a 9x9 sudoku on A4 with its answer key, in four levels from easy to very hard. Levels are set by how many clues are already filled in, and the clue count is printed on the sheet.

All 100 puzzles have exactly one solution, checked by a verifier that shares no code with the generator. You never have to guess: every puzzle can be finished by logic alone.

For quiet time at home, classroom handouts and group activities

  • Pencil-and-paper puzzles for adults
  • Printable worksheets for classrooms and clubs
  • Waiting rooms and senior-center activities

Frequently asked questions

Can I print sudoku puzzles for free?

Yes. Print on A4 or save as a PDF, with no account. The answer key prints the same way.

How are the levels decided?

By how many clues are given. Fewer clues means a harder puzzle, and the clue count is shown on the sheet.

Does every puzzle have a single solution?

Yes, verified for all 100 puzzles by a separate checker. The specific solving techniques required are not guaranteed.

Will I see the same puzzle twice?

Another puzzle steps through the level in order, so puzzles do not repeat back to back.