Third-Degree Black Belt Sudoku(r)

By Frank Longo

Watch out--these sudoku might crush even the most stalwart of solvers!

• Format: Paperback
• Language: English
• ISBN: 1402746490
• ISBN13: 9781402746499
• Release Date: August 2009
• Publisher: Puzzlewright Press
• Length: 192 Pages
• Weight: 0.54 lbs.
• Dimensions: 0.7" x 5.3" x 8.2"

Customer Reviews

not terribly hard

Hubby likes them. Keeps his mind occupied. Saves wading through all the too easy ones you get at the magazine display.