The Slav's great popularity is due to its extreme solidity and abundant possibilities for dynamic counterplay. This book provides detailed coverage to help players as both White and Black face the challenges of this tough yet rewarding opening. All lines after 1 d4 d5 2 c4 c6 are discussed, except those that transpose to the Semi-Slav. The sharpest tactical lines of the Slav receive especially detailed coverage. These include the critical piece sacrifice in the main line (5...Bf5 6 Ne5 e6 7 f3 Bb4 8 e4 Bxe4), the Steiner line (5...Bg4) with 6 Ne5 Bh5 7 h3, and the possibly dubious but highly dangerous Geller Gambit (5 e4), which was a favourite of the young Kasparov. The trendy ...a6 lines are also covered systematically for the first time in chess literature.