Free Printable Hard Sudoku Sudoku Puzzles (PDF)
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About this printable
100 printable hard sudoku puzzles, 4 per page, with every answer in the back. Classic 9×9 sudoku, hard level. Each puzzle is checked by computer to have exactly one solution.
- 100 puzzles, 4 per page
- Exactly one solution each, computer-verified
- Answer key included
- 38 pages · US Letter and A4 PDFs
- Instant download · print as many as you need at home, church or school
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