Loner Vivi Deveraux is thrilled to join Westerly College's Kappas, who are secretly witches, until she meets perfect, polished Scarlett Winter, who will stop at

Games that show how mathematics can solve the apparently unsolvable. This book presents a series of engaging games that seem unsolvable--but can be solved when

Originally published: New York: Summit Books, 1989.

To produce this book, Cheryl Samuel travelled to Leningrad, Copenhagen, and London to examine the six robes in Europe. She also studied the robes housed in muse