Hard nonograms
A 12 by 12 nonogram gives the clues more room to interact, so you spend longer working a line against the ones that cross it. It still never needs a guess, which is the whole point: the deductions alone finish it, and the solved picture is on page two.
Larger grids have more lines to track. Every puzzle solves by logic, with no guessing.
Customise colours
Clean drops the title band and footer, leaving the grid.
Two pages: the puzzle and its solved picture. Every puzzle is proved to solve by logic alone, by the same engine as our KDP studio.
Want the whole book?
This makes one puzzle. Sign up to turn it into a full nonogram book for Amazon KDP: hundreds of graded picture-logic puzzles at any trim, as print-ready PDFs.
Build the full bookFree to build · pay once to export
Preview
The puzzle and its solved picture, as they print.
Making a whole nonogram book?
This page makes one puzzle. To publish a book on Amazon KDP, the KDP nonogram maker generates hundreds of graded puzzles at any trim, as a print-ready 300 DPI interior and solutions PDF. Generate once, export unlimited sizes.
More printable nonograms
Questions
- Are these hard nonograms free to print?
- Yes. Generate the puzzle above and print it with its answer, at no cost and with no sign-up. It is free for classroom, home and personal use.
- Does every puzzle solve by logic?
- Yes. Every puzzle is generated so that row and column deductions alone reveal the whole picture, with no guessing, and that is verified before it prints. The solved picture is on the second page.
- Can I make a nonogram book to sell on KDP?
- Yes. The free tool makes one puzzle. The KDP nonogram maker generates hundreds of graded puzzles at any KDP trim, as a print-ready 300 DPI interior and solutions PDF, so you can publish a book.