"Eye-tricking, mind-mangling, brain-bashing puzzles, tricks, and visual oddities. In order to solve the 500 fantastic optical illusions in this stupendous collection, you'll need to train your eyes and brain to see and think differently! That's because these amazing puzzles are not exactly what they appear to be, from fantastic hidden objects to astonishing mazes. Try to figure out: what's weird about a very unusual building; how many animals are hidden in the forest; why a page with wiggly, wavy lines makes you seasick, how a leprechaun turns into a sumo wrestler; if the fly is on top side of a log or the bottom side; nineteen differences between two pictures that appear to be identical; what's unusual about a pair of scissors; . . . and many more!"-- Page 4 of cover.