As Black

Queen's Gambit Declined · Basic

The most classical defence against 1.d4: Black holds the d5 pawn with ...e6 and develops solidly.

Train this opening

Lines

1. Modern Variation, Heral Variation

   1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Bxf6 Bxf6 6.e4 dxe4

2. 3...Nf6 4.c5

   1.d4 d5 2.c4 e6 3.e3 Nf6 4.c5 b6 5.b4 a5 6.Bd2 axb4

3. 3...Nf6 4.Nc3

   1.d4 d5 2.c4 e6 3.e3 Nf6 4.Nc3 Be7 5.Nf3 O-O 6.Bd3 dxc4 7.Bxc4 c5 8.O-O cxd4

4. Neo-Orthodox Variation, Main Line · 4...Be7 5.Bg5

   1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bg5 O-O 6.e3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7

5. 3...Nf6 4.Nf3

   1.d4 d5 2.c4 e6 3.e3 Nf6 4.Nf3 Be7 5.Nc3 O-O 6.Bd3 dxc4

6. Harrwitz Attack · 4...Be7 5.Bf4

   1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4 O-O 6.e3 b6 7.Bd3 dxc4

7. Neo-Orthodox Variation, Main Line · 4...Be7 5.e3

   1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6

8. Harrwitz Attack · 2...e6 3.Nf3

   1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Be7 5.Bf4 O-O 6.e3 b6