This is a perfect opening manual that contains a detailed classification. Modern Chess Openings 6 - Closed Games (1. d4 d5) 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: Queen’s gambit, Queen’s gambit accepted, Cambridge-Springs variation, Tarrasch defense, Slav defense.