"Dennis Shasha is the absolute best puzzle writer alive."—David Gelernter, professor of computer science, Yale University In the tradition of Sherlock Holmes,

Dr. Ecco is a mathematical wizard who uses logic and computer programming to solve crimes, find treasures, and explore space. Join his team, expand the frontier

Many books on writing tell you how to think more creatively, how to conjure up an idea from scratch. Many, once you have an idea, show you how to express it cle