ECO A10
ECO A00–A99 — Flank openings: 1.c4, 1.Nf3, 1.f4 and other first moves, plus early Indian and Benoni systems.
20 named opening lines are classified under ECO code A10.
- English Opening — 1.c4
- English Opening: Achilles-Omega Gambit — 1.c4 Nf6 2.e4
- English Opening: Adorjan Defense — 1.c4 g6 2.e4 e5
- English Opening: Anglo-Dutch Defense — 1.c4 f5
- English Opening: Anglo-Dutch Defense, Hickmann Gambit — 1.c4 f5 2.e4
- English Opening: Anglo-Dutch Variation, Chabanon Gambit — 1.c4 f5 2.Nf3 d6 3.e4
- English Opening: Anglo-Dutch Variation, Ferenc Gambit — 1.c4 f5 2.Nc3 Nf6 3.e4
- English Opening: Anglo-Lithuanian Variation — 1.c4 Nc6
- English Opening: Anglo-Scandinavian Defense — 1.c4 d5
- English Opening: Anglo-Scandinavian Defense, Löhn Gambit — 1.c4 d5 2.cxd5 e6
- English Opening: Anglo-Scandinavian Defense, Malvinas Variation — 1.c4 d5 2.cxd5 Qxd5 3.Nc3 Qa5
- English Opening: Anglo-Scandinavian Defense, Schulz Gambit — 1.c4 d5 2.cxd5 Nf6
- English Opening: Great Snake Variation — 1.c4 g6
- English Opening: Jaenisch Gambit — 1.c4 b5
- English Opening: King's English Variation, Botvinnik System, Prickly Pawn Pass System — 1.c4 g6 2.Nc3 Bg7 3.g3 Nf6 4.Bg2 O-O 5.e4 d6 6.Nge2 e5 7.O-O c6 8.d3 a6
- English Opening: Myers Defense — 1.c4 g5
- English Opening: Myers Gambit — 1.c4 g5 2.d4 Bg7
- English Opening: Porcupine Variation — 1.c4 f5 2.Nc3 Nf6 3.e4 fxe4 4.g4
- English Opening: Wade Gambit — 1.c4 f5 2.g4
- English Opening: Zilbermints Gambit — 1.c4 g5 2.d4 e5