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Free printable sudoku worksheets
375 print-ready PDF packs across five difficulty levels — 8 puzzles per pack, full answer key on the last page. Download and print.
Easy sudoku
Pure scanning — no pencil marks needed. Good for beginners and classroom use.
Medium sudoku
Introduces hidden singles. A step up from easy, still approachable.
Hard sudoku
Requires naked and hidden pairs. Satisfying for regular solvers.
Expert sudoku
Pointing pairs, box/line reduction, occasional X-Wings.
Einstein sudoku
The full toolkit. Minimal givens, maximum logic. No guessing required.
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 75 (puzzles 593–600). Each difficulty has 600 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.