Der Wettlauf mit der Schildkröte. 100 mathematische Rätsel mit ausführlichen Lösungen

This book is a collection of amusing mental exercises with detailed solutions from the fields of mathematics, geometry, topology and number theory as well as from logics, combinatorics and algebra. Also included are many mathematical jokes, logical subtleties and optical illusions. You don't have to be a genius to solve these riddles - nor own a supercomputer. The volume also takes a look at the history of mathematical entertainment. Detailed solutions and a complete bibliography are also provided.