What's inside
- 1,008 hard sudoku puzzles on classic 9×9 grids
- Twelve puzzles to a page — a thousand hard grids in one book
- Hard from first page to last, with no easy filler to pad the count
- Complete solutions to all 1,008 puzzles, printed at the back
- Large 8.5 × 11 pages, because hard puzzles need room for candidate marks
- Black and white interior on white paper, 115 pages
Hard sudoku is where scanning runs out. You reach a grid with no square that resolves on its own, and the only way forward is to mark every candidate and start eliminating with pairs, triples and box-line interactions. That moment — where the puzzle looks stuck and then suddenly is not — is the reason people solve at this level. Expect twenty to forty minutes each.
Who this book is for
✓
Experienced solvers
You already mark candidates without thinking about it and want puzzles that make the habit necessary.
✓
People bored by mixed books
No warm-up section to skip past. Open it anywhere and the puzzle is hard.
✓
Long-session solvers
One grid can fill an evening. A thousand of them is not a book you finish in a month.
Good to know
- Trim size 8.5 × 11 inches — deliberately large, for pencil work
- Puzzles run first, then the solutions section, numbered to match
- Every puzzle is solvable by logic alone — no guessing required
- Available in paperback and on Kindle
Want the grids that actually resist? Get your copy on Amazon.