Puzzles are known to boost brain power - they improve memory, spatial awareness, logic, and problem-solving. Other benefits include improved mood, reduced stress, and a delay in the onset of dementia and Alzheimer's disease. Now, you can make brain training a part of your daily routine with over 200 classic Japanese puzzles designed to boost your memory, concentration, and overall brain health. Train your brain while having fun! Inside you'll find a variety of Japanese square box puzzles ranging from easy to hard, including Sudoku, Hitori, Slitherlink, Kakuro, Shikaku, Purenrupu, Akari, Tentai Show and many more!