Drain Your Brain

Do not be afraid! Independent scientific tests have shown that Rolf Heimann's latest and greatest batch of brain-drainers cannot harm your brain. Your brain will shift into overdrive as it performs the mental gymnastics that will lead you from puzzle to mega-maze and back to puzzle. But don't despair -- there are also a few easier problems for some gray-matter relief. This book is rated "C" -- Creative Cranial Conditioning for Curious Kids!