The Main-Line Slav is one of the key battlegrounds of modern chess, with adherents among all levels of chess-players. It is notoriously difficult for White to prove any advantage against Black's solid set-up, while the lack of symmetry in the position provides scope for creative players to obtain winning chances with either colour. This book discusses all major lines following the moves 1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4. There are many strategic directions the play can take: sometimes the centre is blasted open and piece-play dominates, while in other cases the centre becomes fixed, or remains dynamic well into the middlegame. Vigorito dissects the most important themes and nuances, placing them firmly in the context of the practical struggle, making sure that readers will be familiar with the resources at their disposal, and understand when to employ them.