Brain Games for Smart Minds is the best way to sharpen your grey cells. These books have been designed in four levels of difficulty—from very easy to hard. These engaging books are the perfect means to occupy oneself when getting bored or while commuting long distances. These engrossing grids not only boost your deductive reasoning but also sharpen your memory. Each book comes with solutions at the end and the user-friendly layout of the book allows you to fill in the grids easily. Sudoku – The Ultimate Brain Workout! Perfect for all skill levels Enhances logical thinking Improves focus and memory Helps reduce stress Perfect gift for puzzle lovers