A Challenge That's Tough to Resist! For fans who want a puzzling experience that will test their abilities to the utmost comes this giant collection of 200 of the toughest crosswords ever presented by "The New York Times" and editor Will Shortz. These Friday and Saturday puzzles feature some of the most virtuoso constructions, with few black squares and as many clusters of long words as possible. And under Shortz, the puzzles feature increased wordplay, a hip, contemporary attitude, and fresh, surprising vocabulary. Are you up to the challenge?