Evil sudoku
Evil is our hardest grade, with the fewest starting numbers we can place while keeping a single solution. It rewards patience and advanced technique. Every board still solves one way, and the full answer prints on page two.
Higher grades need harder solving techniques, not just fewer given numbers.
Hardest step to solve: Trial and error
Symmetric gives the classic newspaper look.
Customise colours
Clean drops the title band and footer, leaving the grid.
Two pages: the puzzle and its solution. Every board has exactly one solution, generated by the same engine as our KDP studio.
Want the whole book?
This makes one puzzle. Sign up to turn it into a full sudoku book for Amazon KDP: hundreds of graded puzzles at any trim, as print-ready PDFs. We carry your difficulty into the studio.
Build the full bookFree to build · pay once to export
Preview
The puzzle and its solution, as they print.
Making a whole sudoku book?
This page makes one puzzle. To publish a book on Amazon KDP, the KDP sudoku 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 sudoku
Questions
- Is this evil sudoku free to print?
- Yes. Generate the puzzle above and print it with its solution, at no cost and with no sign-up. It is free for classroom, home and personal use.
- Does every evil sudoku board have one solution?
- Yes. Every board is generated and verified to have exactly one solution, so a puzzle is never ambiguous or unsolvable. The full solution prints on the second page.
- Can I make a sudoku book to sell on KDP?
- Yes. The free tool makes one puzzle. The KDP sudoku 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.