"Fans will find this volume indispensable; casual readers will find it an attractive nuisance," observed The Scientific American of this rich and challenging compilation of conundrums, diabolic squares, flexagons, domino games, geometric dissections, and other puzzles. Assembled by the lead editor of the Journal of Recreational Mathematics, this volume provides excellent entertainment for puzzle enthusiasts of every level and is ideal for home or classroom use. AUTHOR: Research chemist, technical editor, and well-known recreational mathematician Joseph Steven Madachy founded Recreational Mathematics Magazine and served as the lead editor and editor emeritus of The Journal of Recreational Mathematics for more than 30 years.