ECO A43: Benoni Defense, Queen's Pawn Game & more

ECO A43 is part of volume A — Flank Openings. The Lichess chess-openings dataset files 20 named lines under it, from 3 different openings. The shortest is Benoni Defense: Old Benoni: 1. d4 c5.

That position has come up in 27,083,577 Lichess games between players rated 1600 to 2500: White won 47.7%, 4.7% were drawn and Black won 47.6%.

Opening	Moves	Plies
Benoni Defense: Old Benoni	`1. d4 c5`	2
Benoni Defense: Benoni Gambit Accepted	`1. d4 c5 2. dxc5`	3
Benoni Defense: Old Benoni	`1. d4 c5 2. d5`	3
Benoni Defense: Zilbermints-Benoni Gambit	`1. d4 c5 2. b4`	3
Benoni Defense: Benoni Gambit, Schlenker Defense	`1. d4 c5 2. dxc5 Na6`	4
Benoni Defense: Benoni-Indian Defense	`1. d4 c5 2. d5 Nf6`	4
Benoni Defense: Cormorant Gambit	`1. d4 c5 2. dxc5 b6`	4
Benoni Defense: Old Benoni	`1. d4 c5 2. d5 d6`	4
Benoni Defense: Old Benoni, Mujannah Formation	`1. d4 c5 2. d5 f5`	4
Benoni Defense: Snail Variation	`1. d4 c5 2. d5 Na6`	4
Benoni Defense: Benoni-Indian Defense, Kingside Move Order	`1. d4 c5 2. d5 Nf6 3. Nf3`	5
Benoni Defense: Benoni-Staunton Gambit	`1. d4 c5 2. d5 f5 3. e4`	5
Benoni Defense: French Benoni	`1. e4 e6 2. d4 c5 3. d5`	5
Benoni Defense: Zilbermints-Benoni Gambit	`1. d4 c5 2. Nf3 cxd4 3. b4`	5
Queen's Pawn Game: Liedmann Gambit	`1. d4 c5 2. c4 cxd4 3. e3`	5
Benoni Defense: Hawk Variation	`1. d4 Nf6 2. Nf3 c5 3. d5 c4`	6
Benoni Defense: Old Benoni, Schmid Variation	`1. d4 c5 2. d5 d6 3. Nc3 g6`	6
Benoni Defense: Woozle	`1. d4 c5 2. d5 Nf6 3. Nc3 Qa5`	6
Benoni Defense: Zilbermints-Benoni Gambit, Tamarkin Countergambit	`1. d4 c5 2. Nf3 cxd4 3. b4 e5`	6
Indian Defense: Pseudo-Benko	`1. d4 Nf6 2. Nf3 c5 3. d5 b5`	6