Math meets sudoku in this fun, challenging puzzle craze from Japan. KenKen is a grid-based numerical puzzle that uses basic math operations--addition, subtraction, multiplication, and division--while also challenging your logic and problem-solving skills. In a way, KenKen is like a game of pool or even chess: The more you think ahead to your next move and consider all the possible outcomes, the better you'll get . . . and the smarter you'll become Need to learn more about KenKen, or hone your rusty solving skills? These easier white belt puzzles are great for those just beginning to navigate this fun type of puzzle.