Will Shortz Presents Kenken Easy, Volume 2: 100 Logic Puzzles That Make You Smarter : 100 Easy Logic Puzzles That Make You Smarter

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. Already more than one million KenKen books have been sold in Japan and is a huge hit in The Times of London. Now, America can catch KenKen fever! Volume 2 contains 100 easy multiplication and division KenKen puzzles with "How to Solve" instructions and an introduction by puzzlemaster Will Shortz.