Puzzles are a great and fun way of keeping our brains fit and active, and this jumbo collection of 260 mind-benders will help you do just that! With a huge range of common and unusual puzzle types, they are sure to prove challenging and satisfying to solve. Includes: • Domino Placement • Battleships • Combiku • Slitherlink • And many more! ABOUT THE SERIES: The challenges in the Ingenious Books series are created by one of the world's leading puzzle authors, Ben Addler. His wealth of experience in producing challenging puzzles ensures the dedicated puzzler a truly satisfying solving experience.