Amazing mazes, crafty whodunits, marvelous visual tricks, sly lateral thinking puzzles, and stupefying optical illusions: all these fun challenges--packaged in a cool book that's shaped like a magnifying glass--will give kids a brain workout they'll really enjoy. Every page has a picture of 1, 2, 3, 4, or 5 magnifying glasses; that symbol indicates how easy or treacherously difficult the puzzle will be. For example, finding the guilty party in "Foul Play," a one-glass Dr. Quicksolve mystery, should be relatively simple for budding sleuths. The "Mystery Ruins" maze (3), where you must get from point A to point B through a series of small and winding paths, is harder. And you'll need very sharp eyes and a sharp mind to solve "Circle Quest," a 5 magnifying glass optical illusion. One thing's for sure: by the time kids are done with every one of these, they'll feel super-smart.