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.