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.