Tetsuya Miyamoto (宮本 哲也) is a Japanese mathematics teacher who invented the numerical logic puzzle KenKen® in 2004 to help his students improve their calculation skills, logical thinking, and patience. His methods were so effective that his students dominated Japan’s “Math Olympics,” the country’s top mathematics competition for ages 11–15.
KenKen was introduced to the world in 2007, and first appeared in The Times of London in 2008 and in The New York Times in 2009. Miyamoto has published hundreds of puzzle books which have sold millions of copies. His teaching methodology book “Kyouikuron” sold over 100,000 copies.
Miyamoto splits his time between Manhattan and Japan, where he is still refining both his puzzles and his teaching methodology. He teaches KenKen to children on weekends. In his rare moments of spare time, Mr. Miyamoto pursues his favorite hobby, scuba diving.
Photo by Wakaba Hoshino Miyamoto
KenKen® is a registered trademark of Nextoy, LLC. All Rights Reserved..
Our Puzzle Books Buy Gift Certificates
Our World-Class Authors
How to Solve Puzzles
Our exclusive, award-winning TouchWrite™ handwriting recognition
Special features: Puzzles Live 2013 100th Anniversary of the Crossword
Solve the NYT Daily Crossword in the free Puzzazz app for iOS
View the leaderboard for the current NYT Crossword by David J. Kahn
Get the puzzle of the day: RSS Feed Daily Emails
About Us Contact Us Support FAQ News Our Blog Read the Buzz about Puzzazz
Your account Redeem a coupon or special offer
Page: Tetsuya Miyamoto bio, Tetsuya Miyamoto puzzles