Queens Gambit Declined Semi-Slav (1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.a4 Bb4 6.e3 b5) Chess Puzzles

Queens gambit declined semi-slav is a QGD offshoot where Black uses the semi-Slav idea—most commonly by playing ...c6 and ...e6 to support the d5 pawn and control central squares—while keeping flexibility to meet White’s central ambitions. The defining feature is the semi-Slav structure that arises from the QGD framework, typically after White has committed to a QGD-style setup and Black responds with the c-pawn support rather than a pure QGD. Because this is a family of move orders, the exact “signature” move sequence can vary by transposition, but the resulting pawn structure and piece place