This is a collection of nearly 400 different puzzles grouped into a variety of categories, including a few that are totally original.  Readers will be challenged in a variety of ways, drawing upon their existing knowledge while expanding their thought patterns in an interesting manner.

About the Author

A science graduate of MIT in 1971, Avi Ornstein went on to earn an Ed.D. in 2005. An educator in science and math for over three decades, he has been creating original puzzles for over forty years. He uses a wide range of methods to expand everyone's potential by getting them to think outside of the box. He has been published in the Journal of Recreational Mathematics, The Scientist and other journals.