KenKen can be described simply as sudoku with basic math (addition, subtraction and/or multiplication and division). It's a fun, addictive, clever puzzle that's winning fans the world over. This edition contains 100 easy addition and subtraction KenKen puzzles with solving instructions and an introduction by puzzlemaster Will Shortz. | Will Shortz Presents Crazy for KenKen Easy by Tetsuya Miyamoto, Paperback | Indigo Chapters