SuuudokuuuUpdated
Every booklet below is a free printable sudoku PDF generated straight from Suuudokuuu’s own puzzle generator and technique detectors — the same code that runs the app. Pick a difficulty for a 16-puzzle booklet with solutions on the last pages, or grab the large-print set or a blank sudoku grid below. No sign-up, no ads, no watermark.
Prefer a screen? Play Suuudokuuu nowEach tier links to a full page with a live puzzle preview and the honest difficulty facts from our sudoku difficulty rating guide. The PDF itself only ever needs a printer.
37 clues, solved with full houses and naked singles alone. See the Newbie sudoku lander to play it digitally.
31 clues, and every puzzle needs at least one hidden single, never more. See the Easy sudoku lander to play it digitally.
27 clues, guaranteed to stall on singles and to yield to intersections and subsets. See the Medium sudoku lander to play it digitally.
26 clues, guaranteed to stall on subsets and to yield to fish and wing patterns. See the Hard sudoku lander to play it digitally.
25 clues, guaranteed to stall on wings and to yield to chains and coloring. See the Nightmare sudoku lander to play it digitally.
17 clues, drawn from our bundled, verified 17-clue corpus. See the Hell sudoku lander to play it digitally.
The large-print set uses the same Easy-tier logic as the booklet above, but at two puzzles per page instead of four, so every cell and digit prints noticeably bigger. It suits low-vision solvers, classroom handouts read from a distance, and anyone who finds the standard grid cramped on paper. See the large print sudoku page for printing tips and the on-screen alternative, or the sudoku for seniors guide for the full comfort-focused rundown.
No puzzle, just the grid: one full-page 9×9 grid for copying out a puzzle from a book or newspaper, plus a second page of four smaller grids for quick practice sheets. Useful for teachers building their own worksheets or for anyone transcribing a puzzle they found somewhere without a printer-friendly version.
Every PDF is set to US Letter and drawn with vector lines and text, so it prints crisply at any size. Open the file, print at 100% scale (not “fit to page”, which can distort the grid on some printers), and print single-sided if you want to keep the solutions on separate sheets from the puzzles.
Download the PDF and open it in any PDF reader, then print at 100% scale on US Letter paper. Every grid is drawn with vector lines and standard PDF fonts, so there is nothing to rasterize and no quality loss at any print size.
Yes. Every difficulty booklet and the large-print set carry the full solved grids on the last pages, generated by the same solver that verifies every puzzle has exactly one solution before it ships.
Yes. Suuudokuuu’s code, including the generator behind these puzzles, is open source under the MIT license, and this site places no restriction on printing or redistributing the PDFs — including handing them out in a classroom, a tutoring session or a worksheet packet.