Slav Defense

Overview

The Slav Defense (1. d4 d5 2. c4 c6) is a rock-solid response to the Queen's Gambit that supports d5 while keeping the diagonal open for the light-squared bishop. It combines the solidity of the QGD with better piece activity, making it a modern favorite.

Position after 1. d4 d5 2. c4 c6

Key Ideas

• Black supports d5 with c6 while keeping the c8-bishop free, unlike in the QGD.
• After 3. Nf3 Nf6 4. Nc3 dxc4, the main lines begin with Black either holding or returning the pawn.
• The Semi-Slav (with ...e6) adds more complexity and transposes into rich theoretical territory.
• White often plays for e4, while Black seeks active piece play and queenside counterplay.

Main Variations

History

The Slav Defense has been a staple of championship chess since the early 20th century. It was a key weapon for Euwe, Smyslov, and Anand, and remains one of the most popular defenses at all levels.