At home, while commuting, during lunch hours…people around the world are eagerly working on Sudoku puzzles whenever and wherever they can! Created in the United States, these intriguing conundrums were originally called Number Place puzzles. Their recent rise in popularity began in Japan, where the name translated as sudoku. Here we’ve indicated the skill level necessary to complete each sudoku book in this series in the same way Japanese karate levels are by different colored belts. This is the Black Belt volume, filled with puzzles that will provide a sly, absorbing test for even the best, most proficient experts. It’s impossible to complete only one sudoku at a time, because solving them is habit-forming!
Let me add my name to the long list of disappointed sudoku lovers looking for a fiendish challenge!
On the plus side, a nicely bound book with good quality paper that is very friendly to a pencil and eraser. But the book simply fails to live up to its billing as a collection of "super tough" puzzles.
If you're an accomplished sudoku fan, looking for a tougher nut to crack, this certainly isn't going to be your pot of gold at the end of the rainbow.
This book was a welcome diversion in the evening when I needed to get my mind off other things. I worked one or two in the evening, sometimes while watching television, and always enjoyed the challenge.