ThePuzzleLabs

Free printable sudoku worksheets

185 print-ready PDF packs across five difficulty levels — 8 puzzles per pack, full answer key on the last page. Download and print. No signup, no ads.

Easy sudoku

Pure scanning — no pencil marks needed. Good for beginners and classroom use.

Pack 01Pack 02Pack 03Pack 04Pack 05Pack 06Pack 07Pack 08Pack 09Pack 10Pack 11Pack 12Pack 13Pack 14Pack 15Pack 16Pack 17Pack 18Pack 19Pack 20Pack 21Pack 22Pack 23Pack 24Pack 25Pack 26Pack 27Pack 28Pack 29Pack 30Pack 31Pack 32Pack 33Pack 34Pack 35Pack 36Pack 37

Medium sudoku

Introduces hidden singles. A step up from easy, still approachable.

Pack 01Pack 02Pack 03Pack 04Pack 05Pack 06Pack 07Pack 08Pack 09Pack 10Pack 11Pack 12Pack 13Pack 14Pack 15Pack 16Pack 17Pack 18Pack 19Pack 20Pack 21Pack 22Pack 23Pack 24Pack 25Pack 26Pack 27Pack 28Pack 29Pack 30Pack 31Pack 32Pack 33Pack 34Pack 35Pack 36Pack 37

Hard sudoku

Requires naked and hidden pairs. Satisfying for regular solvers.

Pack 01Pack 02Pack 03Pack 04Pack 05Pack 06Pack 07Pack 08Pack 09Pack 10Pack 11Pack 12Pack 13Pack 14Pack 15Pack 16Pack 17Pack 18Pack 19Pack 20Pack 21Pack 22Pack 23Pack 24Pack 25Pack 26Pack 27Pack 28Pack 29Pack 30Pack 31Pack 32Pack 33Pack 34Pack 35Pack 36Pack 37

Expert sudoku

Pointing pairs, box/line reduction, occasional X-Wings.

Pack 01Pack 02Pack 03Pack 04Pack 05Pack 06Pack 07Pack 08Pack 09Pack 10Pack 11Pack 12Pack 13Pack 14Pack 15Pack 16Pack 17Pack 18Pack 19Pack 20Pack 21Pack 22Pack 23Pack 24Pack 25Pack 26Pack 27Pack 28Pack 29Pack 30Pack 31Pack 32Pack 33Pack 34Pack 35Pack 36Pack 37

Einstein sudoku

The full toolkit. Minimal givens, maximum logic. No guessing required.

Pack 01Pack 02Pack 03Pack 04Pack 05Pack 06Pack 07Pack 08Pack 09Pack 10Pack 11Pack 12Pack 13Pack 14Pack 15Pack 16Pack 17Pack 18Pack 19Pack 20Pack 21Pack 22Pack 23Pack 24Pack 25Pack 26Pack 27Pack 28Pack 29Pack 30Pack 31Pack 32Pack 33Pack 34Pack 35Pack 36Pack 37

About these worksheets

Each PDF is three pages: two pages of puzzle grids (four per page) followed by a full answer key. All puzzles are computer-verified to have a unique solution and require no guessing — every difficulty can be solved through logic alone.

Packs are numbered sequentially within each difficulty. Pack 01 contains puzzles 1–8, Pack 02 contains puzzles 9–16, and so on up to Pack 37 (puzzles 289–296). Each difficulty has 300 distinct puzzles total.

If you'd rather solve interactively, play online with hints, pencil marks, and step-by-step solutions. Or read the sudoku rules guide for technique walkthroughs before tackling harder packs.