📖 Brain Training Puzzles. Over 150 Stimulating Puzzles

Over 150 mind-bending puzzles are included in this brain-training collection. The mix of puzzles is designed to present a host of mental challenges and give your brain a great workout. As you progress through the book, the difficulty increases so you can test and build your skills as you go. Puzzle types include: • Domino Placement • Calcudokus • Hidatos • Number links • Skyscrapers • Slitherlinks, and many more.