ECO D43

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

4 named opening lines are classified under ECO code D43.

• Semi-Slav Defense — 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6
• Semi-Slav Defense: Anti-Moscow Gambit — 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 h6 6.Bh4
• Semi-Slav Defense: Hastings Variation — 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 h6 6.Bxf6 Qxf6 7.Qb3
• Semi-Slav Defense: Moscow Variation — 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 h6 6.Bxf6 Qxf6