Expand your mind with this exciting collection of mental challenges--more than 100--from the seemingly simple to the almost impossible.

Challenge yourself with more than 100 different types of puzzles! These tantalizing teasers include everything from mind-melting geometry problems to extreme chess enigmas, from logic riddles to card and bridge games. See if you can figure out why a judge had to set an obviously guilty man free, when two missiles will collide, which of several statements is obviously untrue, which letter comes next in a series, how a man managed to marry his widow's sister, and more.