The latest, greatest puzzle craze is here to stay. An instant bestseller in its debut season, the KenKen Calendar brings you a full year of "the most addictive puzzle since Sudoku" (Will Shortz). A global phenomenon, KenKen is syndicated in over 100 newspapers and magazines, and is the only not word-based puzzle that The New York Times has deemed worthy of running alongside its famous crossword. The all-new puzzles begin easy on Monday and grow progressively harder over the course of the week. With its simple rules, elegant solutions, and pure entertainment value, KenKen is sure to appeal to puzzlers of all ages. Once you KenKen, you won't want to stop!