Queen's Gambit Declined · D31
Semi-Slav, Koomen Variation
1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. e3 b5 6. a4 Bb4 7. Bd2 Qe7
An early pawn trade leaves the c-file as White's avenue and the d-file as Black's - both sides get real winning chances down their own file. Black keeps the extra pawn; White plays for time, open lines, and initiative - the classic gambit trade.
The first 4 moves, explained
- 1. d4 Stakes a claim in the centre, controlling e5, and frees the bishop and queen.
- 1... d5 Stakes a claim in the centre, controlling e4, and frees the bishop and queen.
- 2. c4 Challenges the pawn on d5 - the central tension has to resolve. The pawn is genuinely on offer - this is the Queen's Gambit: development and initiative over material.
- 2... e6 Supports the centre, adding control of d5. Theory calls this the Queen's Gambit Declined.
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Where this fits
This line is one of 200 in the Queen's Gambit Declined. If you want to know where your own games leave it, the guide on leaving theory explains how that is found.