More than 150 ways to train your brain, improve your lateral thinking, and generally get your grey matter fit There is a whole world's worth of puzzles inside this collection, and puzzlers will travel the globe to solve challenges including a Monte Carlo racing rally riddle, the British Prison Paradox, and the Swiss Smugglers' puzzle! This superb collection of many puzzle types includes general puzzles, fallacies and paradoxes, and visual-spatial tests, and it provides the solutions.