This book is a comprehensive guide to the two-move chess problem that will delight chess lovers. Extensively illustrated. Contents Include: Introduction; Definitions; The Key; Themes. Based on Black Defence; Themes. Based on Black Mistakes; Mating Strategy; Combination Themes; Changed and Added Mates; Construction; Composing; Solving and Analysing; New Developments; Index of Names; General Index. This book contains classic material dating back to the 1900s and before. The content has been carefully selected for its interest and relevance to a modern audience.