Acclaimed Japanese mathematics instructor Tetsuya Miyamoto developed KenKen in 2004 and it has since taken over the puzzling world. It takes a page from karate - ather Japanese art - each title is graded by colour: White for easy, Green for medium, Brown for hard & Black Belt, for the super-tough! All in a handy-sized format, so puzzle lovers can play this addictive game wherever the mood takes them! So, you've worked your way through the easiest, for-beginners-only KenKen. The next level awaits you. Do you have what it takes to solve these 300 puzzles?
Acclaimed Japanese mathematics instructor Tetsuya Miyamoto developed KenKen in 2004 with the goal of improving his students' math and logic skills. This understandable, fun and challenging puzzle quickly became a favourite leisure activity for all ages throughout Japan and then for millions of players worldwide. Now it's carried in the New York Times, Los Angeles Times, Chicago Tribune, The Times, Scholastic classroom magazines and more.