As Black

Queen's Gambit Declined · Intermediate

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

Train this opening

Lines

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

   1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Be7 5.Bg5 O-O 6.e3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7 9.Nxe4 dxe4

2. 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 7.Bh4 Ne4 8.Bxe7 Qxe7 9.Nxe4 dxe4 10.Nd2 f5

3. Neo-Orthodox Variation, Main Line · 4...Be7 5.Nf3

   1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Nf3 O-O 6.e3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7 9.Nxe4 dxe4 10.Nd2 f5 11.Be2 a5

4. Three Knights Variation

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

5. Exchange Variation

   1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Nf3 c6 6.Bg5 Be7 7.e3 Bf5

6. Exchange Variation, Positional Variation

   1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Be7 6.e3 O-O 7.Bd3 Re8

7. Harrwitz Attack

   1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Be7 5.Bf4 O-O 6.e3 b6 7.Bd3 dxc4 8.Bxc4 Bb7

8. 3...Nf6 4.e3

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

9. Neo-Orthodox Variation, Main Line · 3...Nf6 4.Bg5

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