Pocket Sudoku Book for Adults: 200 Very Hard to Extreme Hard Puzzles ? Compact Travel Size with Full Solutions (Vol. 5) Paperback ? October 8, 2024 by Sudoku99 Team (Author)

For advanced solvers looking for the toughest Sudoku challenges, this Pocket Sudoku Book for Adults delivers 200 puzzles ranging from very hard to extreme hard difficulty. Perfect for puzzle enthusiasts who want to push their skills to the limit, this 4 x 6-inch travel-size book is convenient for solving on the go. With full solutions provided, you can check your progress at any time and improve your techniques.

Key Features:
- 200 puzzles from very hard to extreme hard difficulty
- Compact 4 x 6-inch size, ideal for travel or quick puzzle sessions
- Full solutions included for every puzzle
- Play online: Solve the same puzzles on Sudoku99.com by entering the Sudoku ID provided in the book
- Perfect for expert Sudoku solvers looking for a serious mental challenge

Test your limits with these extremely challenging puzzles, all in a convenient, portable format for on-the-go solving.