Are you experienced? These are the hardest KenKen for super-solvers only!

Features a handy-sized format, so that puzzle lovers can play this game wherever the mood takes them.

Are you tough enough? Tkae on this collection of 200 devilishly difficult KenKen puzzles!

From the creator of the hit web series "Enter The Dojo" with over 50 million YouTube views comes the best self defense book ever written! 11th Degree Black Belt Master Ken explains his most famous techniques such as "The Hurticane", "The Thrust of Freedom" and, of course, the dreaded "Kill Face"! This book is a must-have for anyone who aspires to learn from the most dangerous martial artist in the world: Master Ken! Learn more about him at www.youtube.com/enterthedojoshow

Puzzle fans have fallen for KenKen and now crave more challenging puzzles. The puzzles in this edition range in size from 6x6 grids to 9x9 grids and for the first time there will also be grids without application symbols. It's the ultimate KenKen challenge! This edition will also include "How to Solve" instructions and an introduction by puzzlemaster Will Shortz. Includes: *100 very challenging KenKen puzzles *Puzzles range in size from 6x6 grids to mind-bending 9x9 grids * Introduction and solving instructions by puzzlemaster Will Shortz

Kakuro are language-free number puzzles that use pure logic and require just simple arithmetic to solve. This book contains 150 kakuros. It takes cue from the belt colors in martial arts: white is for novices, green for intermediates, brown for very accomplished players, and black for those consummate experts who crave a challenge.

Takes a page from karate - another Japanese art - each title is graded by colour: White for easy, Green for medium, Brown for hard &, Black Belt, for the super-tough. This title features a handy-sized format.

Let the number crunching begin as you embark on a journey to become one of the KenKen Elite! If you can complete these infernally difficult puzzles, then you will have achieved the highest honor bestowed upon any KenKen-er. So sharpen that pencil and get ready for 100 of the most grueling, mind-numbing KenKen puzzles ever...difficulty level=expert^2.

Calling all KenKen experts! These puzzles are meant only for the experienced solver eager to try some super-hard brainbusters.

Intrigued by KenKen? Novices can tie on their white belts and begin their puzzle-solving journey here. But be warned: once you begin, youll never want to stop!