Krause Variation

The Krause Variation arises after 1. d4 d5 2. Nf3 c5, where Black uses the moment before White has committed to c2-c4 to challenge the d4-pawn at once. The idea mirrors the Queen's Gambit with colors reversed: the c-pawn offers itself as a lever against White's center. Black thereby sidesteps the slower setups White often aims for after 2. Nf3, such as the London, Colle and Torre systems, and plays for open lines and active piece play instead of the usual ...Nf6 and ...e6 development. The cost is a looser structure, since the d5-pawn loses the c-pawn's possible support.

White has three main ways to respond. The most frequent is 3. e3, which bolsters d4 with a pawn and keeps a compact, Colle-like position. If Black later captures on d4, White can recapture with the e-pawn and obtain an open e-file. The second choice, 3. c3, also defends d4 by pawn and creates a Slav-type chain, so that an exchange on d4 can be met by cxd4 and a symmetrical center. These quiet replies decline any confrontation and aim for normal development with a modest space edge.

The more ambitious 3. c4 turns the game into a symmetrical Queen's Gambit, with both c-pawns attacking the opponent's d-pawn and an early opening of the center likely. Among the most common replies on Lichess, it gives White the best results. Engines also favor 3. c4, and they rate 3. dxc5 highly as well. That capture produces a reversed Queen's Gambit Accepted in which White, already having Nf3 in, holds an extra tempo compared with the normal colors. Black then has to spend time recovering the pawn.

The variation is a reasonably common sideline, ranking among the more frequently reached named positions, with tens of thousands of games on Lichess. Results there are close to even, with White slightly ahead and draws quite rare, which reflects the open character of many lines. The engine assessment gives White only a small edge, at the boundary between balance and a slight advantage. The opening is less heavily analyzed than the main Queen's Gambit lines, which makes it a practical choice for players who want an early central fight against 2. Nf3.