Dear KENKEN Enthusiast,

My name is Tetsuya Miyamoto and I am the inventor of KENKEN®.

In Japanese “Ken” means wisdom, so my puzzles are named “KENKEN” or wisdom squared.

My philosophy for learning is “The Art of Teaching Without Teaching.”

The goal of KENKEN is not necessarily to “solve” puzzles, since solving a puzzle does not make us smarter. Rather, the goal is to learn by fully using the brain in trying to solve the puzzle through trial and error.

KENKEN is based on two fundamental beliefs: (1) people can improve their logic and problem solving skills by themselves if given the right tools, and (2) it can be fun to develop these skills by solving puzzles. After spending some time with KENKEN, I am confident you will gain perseverance and have a better ability to think analytically. You will see the evidence of your progress as you complete more difficult puzzles with greater speed.

Today I am proud to watch Ken Ken become more and more popular— KENKEN makes math fun for children, and keeps the brain sharp for adults. Challenge yourself, sharpen your brain and relax your mind at the same time. I am so happy to watch people from all over the world embracing KENKEN and I hope you will enjoy solving KENKEN puzzles for years to come!

Yours truly,

Tetsuya Miyamoto