The Little Book of Big Brain Games: 517 Ways to Stretch, Strengthen and Grow Your Brain
Ivan Moscovich is an internationally known and acclaimed inventor, puzzler, and artist. He has designed award-winning toys for Mattel, Kenner, Childcraft, Ravensburger, Binary Arts, and other companies, and is the author of the MindGames series and other books.  Mr. Moscovich lives in the Netherlands.