If you relish a challenging mental workout, this collection of brain teasers will demand your very best lateral thinking skills to solve. 150 puzzles with two or three separate headscratchers per puzzle. But do not worry, solutions are found at the back of the book so you can get into the head of these fiendish setters and work out their devilish method! These mental puzzles require serious application, imagination and skill to solve. Some demand a logical approach, others a methodical, mathematical mind. Are you up to the challenge of solving these rigorous but entertaining word, logic and number puzzles?