Martial Arts Sudoku Level 9: Black Belt Sudoku (Martial Arts Sudoku)

By Frank Longo

Sudoku fever is on! Which book in the Martial Arts Sudoku series will provide the perfect challenge for you? The skill level recommended to solve these puzzles is ranked in the same way as Japanese karate levels--by different colored belts. Get started with the Black Belt collection.

• Format: Paperback
• Language: English
• ISBN: 1402737610
• ISBN13: 9781402737619
• Release Date: January 2006
• Publisher: Puzzlewright
• Length: 96 Pages
• Weight: 0.25 lbs.
• Dimensions: 0.4" x 4.4" x 5.6"

Customer Reviews

Good Sudoku Book

Great challenging puzzles and easy to take along with you so you can do them while waiting for doctor appointments, etc. Just stick it in your pocket. Wish there were more like this one.

little and difficult

Frank Longo is the only sudoku writter that I will do. This is a great little takealong book. It has a hard cover so you can write without another surface. It has good paper for erasing pencil marks. The puzzles are difficult and incorporate many of the stratagies he has put forth in his instruction book. All in all, a great little book, I only wish it had more puzzles.

Prepare to exercise your brain!

I love this book and have all of them from level 6 up. Almost all of these can be solved without any forcing. I enjoyed every minute of this book. I wish there was a level 10, 11, and 12 so the enjoyment could go on. Alas, the search for more truly hard sudoku books continues now that I have done every puzzle in this book twice.

if you really like hard sudoku

I enjoy the toughest Sudokus, I do solve them all; when really at a 'dead-end', I rely on "Ariadne's thread", aka 'smart-guessing' (once I have narrowed down dozens of relations). This book drives me to that process more than any other, including more often than with Frank Longo's other good book "Second-Degree Black Belt Sudoku".