KenKen is known around the world as a fun and wildly addictive game but did you know that it was originally created as a teaching tool to hone math, logic, and reasoning skills? So grab a pencil and and enjoy this fun way to strengthen your mind!*Refresh and renew the ""little grey cells"" with 100 easy to hard KenKen puzzles*Edited by legendary New York Times puzzlemaster Will Shortz *Big grids with lots of space for easy solving | Will Shortz Presents KenKen to Exercise Your Brain by Tetsuya Miyamoto, Paperback | Indigo Chapters