This is a perfect opening manual that contains a detailed classification. Modern Chess Openings 5 - Semi-Closed Games (1. d4 Nf6 2. c4 e6) course is aimed at teaching a student much of the opening and middlegame methods and intricacies through a detailed theoretical section. Each of the lessons illustrates typical plans and methods in the following openings: Nimzo-Indian defense, Queen’s Indian defense and Catalan opening.