This entertaining short story collection features Professor Augustus S.F.X. Van Dusen, nicknamed "The Thinking Machine"-a brilliant but abrasive scientist who proves time and again that any puzzle can be solved by the application of logic. Could you beat the world chess master in one try if you'd never played or studied the game? Or plot and execute a successful escape from an inescapable prison cell? And could you do it at the turn of the twentieth century, without benefit of modern technology? Sound impossible? Never use that word in the presence of The Thinking Machine-it angers him...