In this book, Bryan Paulsen examines key lines in the Semi-Slav complex, which is hotly contested at both world championship and club level. Paulsen's coverage includes the fascinating Botvinnik Variation, the solid Moscow Variation, the razor-sharp Anti-Moscow Gambit and the popular Cambridge Springs Defence. Paulsen studies the most theoretically important and instructive games in recent years, highlighting the main developments and novelties for both sides. Whether playing White or Black, this book provides you with essential knowledge of an important opening.