Beware: these super-hard puzzles will have your brain working on overdrive But that's perfect, if you're a solver who likes to get burned once in a while--especially by brilliantly executed crosswords with fiendishly challenging clues. Fans of the Friday and Saturday offerings from places like The New York Times will love the difficulty level and the devilishly wicked themes. There are even explanations in the back for the toughest clues, along with complete answer grids. Solve with a pen ... if you dare