Queen's Gambit: what to play after c4?

The position reached after d4 d5 c4 defines the Queen's Gambit, categorized under ECO code D06. In this position, Black must decide how to address the tension on the d5 pawn, with the most statistically robust and engine-recommended responses being e6 and c6. These moves aim to solidify the center while preparing for development, maintaining a narrow engine evaluation of +0.18 and +0.23 respectively.

Solidifying the Center with e6 or c6

The most frequent response is e6, played in 26.6% of the 216 million recorded games. This move leads to the Queen's Gambit Declined, where Black supports the d5 pawn and prepares for kingside development. White scores 53.8% in this line, often continuing with Nc3 Nf6 cxd5 exd5 Bg5. Alternatively, c6 characterizes the Slav Defense, appearing in 19.5% of games. This variation avoids blocking the light-squared bishop and typically proceeds into the main line c6 Nf3 Nf6 Nc3 e6 Bg5.

The Queen's Gambit Accepted

Choosing to capture the pawn with dxc4 occurs in 22.9% of games. While the engine evaluation of +0.36 is slightly higher than the declined variations, it remains a highly theoretical and popular choice. White scores 56.9% from this position, frequently utilizing the center with dxc4 e4 e5 Nf3 exd4 Bxc4. This approach shifts the game from a closed positional struggle to a more open, tactical battle where White often gains rapid development in exchange for the temporary pawn sacrifice.

Aggressive and Offbeat Alternatives

Less common responses include the Chigorin Defense with Nc6, played in 3.9% of games, and the Symmetrical Defense with c5, seen in 2.4% of games. The Chigorin Defense creates immediate piece pressure but allows White a score of 55.1% following Nc6 Nf3 e6 Nc3 Nf6 Bg5. The Symmetrical Defense c5 carries an engine evaluation of +0.52 and leads to sharp central liquidations such as c5 cxd5 Qxd5 Nf3 cxd4 Nc3.