Hard Sudoku Book — 100 Printable Puzzles
Around 100 hard sudoku puzzles in one print-ready PDF, cover and full solutions included. It's a meaty book for solvers who've outgrown medium — a month of genuinely testing grids that reward hidden pairs, pointing pairs and patient elimination.
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Difficulty level
Puzzles per page
Puzzle pages
96 puzzles
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Frequently asked questions
- Is a 100-puzzle book too many to print?
- Not at all — it's around 100 puzzles in one tidy PDF, a month or so of solving. If you'd rather not print the whole thing at once, just save the PDF and print a few pages at a time.
- Are these hard sudoku suitable for beginners?
- They're a real challenge — hard puzzles need techniques like hidden pairs and pointing pairs. If you're just starting out, try the easy or beginner book first, then read our solving guides before tackling these.
- Does this hard sudoku book include the solutions?
- Yes. Your hard sudoku book PDF ends with a full solutions section, and the cover carries a QR code that opens the exact answers online — so you can always check a tricky grid.
How to solve these
New to a technique? Read the step-by-step rules and solving guides.
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