How to use it
- Choose a level and how many puzzles you want (1–12).
- Press “New puzzles” for another set.
- Download the PDF: one puzzle per page, solutions at the end, six per page.
Levels
Easy puzzles start with about 38 given numbers, medium about 32, hard about 27 and expert about 24. Every puzzle is checked by a solver to have exactly one solution.
Rules
Fill the grid so that every row, every column and every 3 × 3 box contains the digits 1 to 9 exactly once.
Questions
Are the puzzles unique?
Each set is generated when you press the button, and each puzzle is verified to have a single solution.
Can I print sudoku without solutions?
Yes, untick “Include solutions”.