ECO A47

ECO A00–A99 — Flank openings: 1.c4, 1.Nf3, 1.f4 and other first moves, plus early Indian and Benoni systems.

4 named opening lines are classified under ECO code A47.

• Indian Defense: Schnepper Gambit — 1.d4 Nf6 2.Nf3 b6 3.c3 e5
• Marienbad System — 1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5
• Marienbad System: Berg Variation — 1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5 5.c4 cxd4 6.Qxd4
• Pseudo Queen's Indian Defense — 1.d4 Nf6 2.Nf3 b6