ECO D56

ECO D00–D99 — Closed and Semi-Closed Games: 1.d4 d5 queen's pawn openings and the Grünfeld Defense.

2 named opening lines are classified under ECO code D56.

• Queen's Gambit Declined: Lasker Defense, Russian Variation — 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.Qc2 Nf6 10.Bd3 dxc4 11.Bxc4 c5 12.O-O Nc6 13.Rfd1 Bd7
• Queen's Gambit Declined: Lasker Defense, Teichmann Variation — 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 h6 6.Bh4 O-O 7.e3 Ne4 8.Bxe7 Qxe7 9.Qc2