ECO D63

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

5 named opening lines are classified under ECO code D63.

• Queen's Gambit Declined: Orthodox Defense, Capablanca Variation — 1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 b6 8.cxd5 exd5 9.Bb5
• Queen's Gambit Declined: Orthodox Defense, Henneberger Variation — 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 a6
• Queen's Gambit Declined: Orthodox Defense, Main Line — 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1
• Queen's Gambit Declined: Orthodox Defense, Pillsbury Variation — 1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 b6 8.cxd5 exd5 9.Bd3
• Queen's Gambit Declined: Orthodox Defense, Swiss, Carlsbad Variation — 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 a6 8.cxd5