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KenKen is the brilliant successor to Su Doku that s taken Japan by storm. In collaboration with The Times, Collins - the no 1 puzzle publisher - are proud to publish it in the UK. KenKen is a brain-training puzzle based on logic and simple arithmetic. Perfect for all ages and highly addictive, KenKen puzzles challenge and entertain in an entirely new way. The puzzle was invented by a charismatic Japanese maths teacher, Tetsuya Miyamoto in 2004. The name comes from Ken which is the Japanese word for clever and KenKen translates as square wisdom . It s based on simple arithmetic and each puzzle involves some or all of the following skills: addition, subtraction, multiplication and division. As with Su Doku there are clearly defined levels for each type of puzzle from beginner and intermediate to advanced and the puzzles can be on any size grid, from 3 x 3 up to 9 x 9. The puzzles improve numeracy, logical thinking, concentration and perseverance. Can you KenKen?

About the Author

Tetsuya Miyamoto established his own maths class in 1993 and is the founder and instructor of his own maths class in Yokohama, Japan. He pioneered the national success and popularity of the KenKen puzzle in Japan. He spent years inventing KenKen and other puzzles which he has used in his class to strengthen the thinking habits of his students. He is the author of the Japanese books translated as The Art of Teaching Without Teaching Books 1 & 2 which introduce his unique educational methods and beliefs. He has regular columns in several Japanese monthly magazines such as Maths for Middle School and Maths for High School . He regularly lectures to educators and parents in Japan.

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