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	Games	Length
English Opening: Anglo-Indian Defense	`1. c4 Nf6`	21.2M	1 move
English Opening: Anglo-Indian Defense, King's Knight Variation	`1. c4 Nf6 2. Nf3`	5.5M	2 moves
English Orangutan	`1. c4 Nf6 2. b4`	67K	2 moves
English Opening: Anglo-Indian Defense, King's Indian Formation	`1. c4 Nf6 2. Nf3 g6`	2.2M	2 moves
English Opening: Anglo-Indian Defense, Old Indian Formation	`1. c4 Nf6 2. Nf3 d6`	506K	2 moves
English Opening: Anglo-Indian Defense, Queen's Indian Formation	`1. c4 Nf6 2. Nf3 b6`	152K	2 moves
English Opening: Anglo-Indian Defense, Scandinavian Defense	`1. c4 Nf6 2. Nf3 d5`	830K	2 moves
English Orangutan	`1. c4 Nf6 2. Nf3 g6 3. b4`	87K	3 moves
English Opening: Anglo-Indian Defense, Grünfeld Formation	`1. c4 Nf6 2. Nf3 g6 3. g3 d5`	20K	3 moves
English Opening: Anglo-Indian Defense, Romanishin Variation	`1. c4 e6 2. Nf3 Nf6 3. g3 a6`	8,575	3 moves
English Opening: Anglo-Indian Defense, Scandinavian Defense, Exchange Variation	`1. c4 Nf6 2. Nf3 d5 3. cxd5 Nxd5`	400K	3 moves
English Opening: Anglo-Indian Defense, Slav Formation	`1. c4 Nf6 2. Nf3 g6 3. g3 c6`	20K	3 moves
English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld	`1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 4. e4`	479K	4 moves
English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto	`1. c4 Nf6 2. Nf3 g6 3. g3 b6 4. Bg2 Bb7`	28K	4 moves
English Opening: Anglo-Indian Defense, Queen's Indian Formation	`1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7`	217K	4 moves