The Puzzling Adventures of Dr. Ecco and Variations on a Theme

and Variations on a Theme by Paganini

drawing classes

" works that continue to grow in popularity

also largely curtailed the art and craft of making fine books by hand

the discovery of such astronomical phenomena as quasars

The Puzzling Adventures of Dr. Ecco and Variations on a ThemeDr. Ecco is a mathematical detective and puzzle solver. In this book readers are invited to join him in solving nearly 40 puzzles inspired by methods in computer science and mathematics, including The Tower of Lego, the Odd Doors Problem, Spies and Double Agents, Gossiping Defenders, Code Breaking, and many more. Reprint of the W. H. Freeman and Company, New York, 1988 edition.