Looking for some challenging fun? If you haven't already discovered the game that CNN calls maddeningly addictive, you'll soon see for yourself that sudoku demands mathematical skills. So get out your pencil (eraser optional) and try solving these 150 puzzles from New York Times crossword editor and bestselling author Will Shortz.
Will Shortz has been the crossword puzzle editor of The New York Times since 1993. He is also the puzzlemaster on NPR's Weekend Edition Sunday and is founder and director of the annual American Crossword Puzzle Tournament. He has edited countless books of crossword puzzles, Sudoku, KenKen, and all manner of brain-busters.