KenKen has quickly become the successor to sudoku that the world's been waiting for! And the New York Times is becoming America's favorite place to get their KenKen fix. Now, in addition to appearing the the daily editions of the Times, KenKen will be printed in the Sunday Times Magazine as well. Now you can solve KenKen 7 days a week! This second New York Times edition of KenKen contains 300 larger Sunday-sized 5x5 and 7x7 puzzles with "How to Solve" instructions and an introduction by puzzlemaster Will Shortz. The puzzles use all four mathematical operations and increase in difficulty like they do in the Times.