What makes a crossword cunning? These 100 brainteasers will show you! First, they use real words--not ones that exist only in crossword puzzle dictionaries. Next, they have a theme, at least two answers in each puzzle that relate to each other. And finally, the clues are hard enough to test your crossword savvy...without making you scream in frustration. (Of course, the answers are in the back.) So, sharpen your pencil-and mind-and attack these skillfully made, entertaining puzzles.