Queen's Gambit Declined, Vienna Variation

In its most common modern sense, the Vienna Variation arises after three knights have developed, two white and one black, and Black’s d5-pawn captures on c4. In algebraic notation, N means knight and x marks a capture; the line is written 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 dxc4. The capture resolves the central tension, the situation in which the c4- and d5-pawns attacked each other without exchanging. It does not mean Black can keep the pawn without risk. White must choose between recovering it calmly and using the time to occupy the center.

The ambitious reply is e4. White places two pawns side by side in the center and gains space, but that center also becomes a target. Black often answers with ...Bb4, pinning the c3-knight to the king, or with ...c5, a pawn advance that attacks d4. The quieter e3 opens the f1-bishop and prepares to regain c4 without creating as many weaknesses.

The position's balance

White receives activity and central control. Black receives concrete targets and chances to force the center to advance or exchange. If White tries to recover c4 automatically, moves such as ...b5 or ...Bb4 may gain time. If Black clings to the pawn for too long, development can lag and the king may remain in the center.

This Vienna is closely related to some Ragozin positions and can be reached through different move orders. It also shares the fight over e4 with the Semi-Slav Chigorin Defense, although the starting structure and piece placement differ.