ECO A15: English Opening & English Orangutan

ECO A15 is part of volume A — Flank Openings. The Lichess chess-openings dataset files 15 named lines under it, from 2 different openings. The shortest is English Opening: Anglo-Indian Defense: 1. c4 Nf6.

That position has come up in 21,186,654 Lichess games between players rated 1600 to 2500: White won 49.3%, 5.6% were drawn and Black won 45.0%.

Opening	Moves	Plies
English Opening: Anglo-Indian Defense	`1. c4 Nf6`	2
English Opening: Anglo-Indian Defense, King's Knight Variation	`1. c4 Nf6 2. Nf3`	3
English Orangutan	`1. c4 Nf6 2. b4`	3
English Opening: Anglo-Indian Defense, King's Indian Formation	`1. c4 Nf6 2. Nf3 g6`	4
English Opening: Anglo-Indian Defense, Old Indian Formation	`1. c4 Nf6 2. Nf3 d6`	4
English Opening: Anglo-Indian Defense, Queen's Indian Formation	`1. c4 Nf6 2. Nf3 b6`	4
English Opening: Anglo-Indian Defense, Scandinavian Defense	`1. c4 Nf6 2. Nf3 d5`	4
English Orangutan	`1. c4 Nf6 2. Nf3 g6 3. b4`	5
English Opening: Anglo-Indian Defense, Grünfeld Formation	`1. c4 Nf6 2. Nf3 g6 3. g3 d5`	6
English Opening: Anglo-Indian Defense, Romanishin Variation	`1. c4 e6 2. Nf3 Nf6 3. g3 a6`	6
English Opening: Anglo-Indian Defense, Scandinavian Defense, Exchange Variation	`1. c4 Nf6 2. Nf3 d5 3. cxd5 Nxd5`	6
English Opening: Anglo-Indian Defense, Slav Formation	`1. c4 Nf6 2. Nf3 g6 3. g3 c6`	6
English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld	`1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 4. e4`	7
English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto	`1. c4 Nf6 2. Nf3 g6 3. g3 b6 4. Bg2 Bb7`	8
English Opening: Anglo-Indian Defense, Queen's Indian Formation	`1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7`	8