The Puzzling Adventures of Dr. Ecco

Dr. 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.