EXTREMEPUZZLE BOOKS
Cover of Extreme Sudoku 1

Extreme Sudoku · Puzzles by M. J. Bailey

Extreme Sudoku 1

150 puzzles. Expert and beyond.

Classic 9×9 sudoku with the warm-up taken out. Every grid sits at the top of the expert range or beyond it, and the book ramps from hard to brutal.

  • 150 puzzles, one per page, large clear grids
  • Only our hardest levels, getting harder as you go
  • Exactly one solution each, reachable by logic alone. No guessing needed
  • Every solution has a QR code to an animated step-by-step walkthrough
Format
Paperback, 5 × 8 in, 234 pages
Price
£8.99 / $9.99
Out
30 October 2026

Every solution has a QR code to its own step-by-step walkthrough. See a sample.