Want to boos your memory? These memory puzzles are a great choice for those who want a mental workout that's fun and challenging at the same time. Research shows that working puzzles is a perfect way to keep your mind young, flexible, and fit, and because Brain Games: Improve Your Memory offers four levels of challenge, it's easy to strengthen your brain and sharpen your mind every day! 16 cm x 23 cm 192 page soft cover.