ECO D05

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 D05.

• Queen's Pawn Game: Colle System, Traditional Colle — 1.d4 Nf6 2.Nf3 e6 3.e3 c5 4.Bd3 d5 5.c3
• Rubinstein Opening — 1.d4 Nf6 2.Nf3 e6 3.e3 c5 4.Bd3 d5 5.b3
• Rubinstein Opening: Bogoljubow Defense — 1.d4 Nf6 2.Nf3 e6 3.e3 c5 4.Bd3 d5 5.b3 Nc6 6.O-O Bd6 7.Bb2 O-O
• Rubinstein Opening: Classical Defense — 1.d4 Nf6 2.Nf3 e6 3.e3 c5 4.Bd3 d5 5.b3 Nc6 6.O-O Be7 7.Bb2 O-O
• Rubinstein Opening: Semi-Slav Defense — 1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 Bd6 5.O-O O-O 6.b3 Nbd7 7.Bb2