Free printable sudoku puzzles

156 sudoku puzzles graded by the techniques they actually require, from easy grids for beginners to 24-clue expert grids. Every puzzle has exactly one solution.

• Easy 48 puzzles, solvable with naked singles alone
• Medium 48 puzzles, requires hidden singles
• Hard 36 puzzles, requires deeper elimination beyond singles
• Expert 24 puzzles, the hardest grids we publish, around 24 clues
• Blank sudoku grids 1, 2, 4 or 6 per page

Frequently asked questions

How are the difficulty levels graded?

By solving technique, not by guesswork. Easy puzzles fall to naked singles alone (at every step some cell has only one possible digit). Medium puzzles also require hidden singles. Hard and expert puzzles require deeper elimination, with expert grids trimmed to around 24 clues.

Do all puzzles have exactly one solution?

Yes. The generator proves uniqueness for every puzzle before it is published; a grid with two solutions never ships.

How many puzzles per printed page?

Six. Each pack is one PDF sheet of six grids plus a matching solutions sheet.