ECO A80: Dutch Defense & Queen's Pawn Game

ECO A80 is part of volume A — Flank Openings. The Lichess chess-openings dataset files 18 named lines under it, from 2 different openings. The shortest is Dutch Defense: 1. d4 f5.

That position has come up in 15,853,484 Lichess games between players rated 1600 to 2500: White won 49.7%, 4.9% were drawn and Black won 45.4%.

Opening	Moves	Plies
Dutch Defense	`1. d4 f5`	2
Dutch Defense: Alapin Variation	`1. d4 f5 2. Qd3`	3
Dutch Defense: Hopton Attack	`1. d4 f5 2. Bg5`	3
Dutch Defense: Korchnoi Attack	`1. d4 f5 2. h3`	3
Dutch Defense: Krejcik Gambit	`1. d4 f5 2. g4`	3
Dutch Defense: Raphael Variation	`1. d4 f5 2. Nc3`	3
Dutch Defense: Hevendehl Gambit	`1. d4 f5 2. g4 e5`	4
Dutch Defense: Omega-Isis Gambit	`1. d4 f5 2. Nf3 e5`	4
Queen's Pawn Game: Veresov Attack, Dutch System	`1. d4 f5 2. Nc3 d5`	4
Dutch Defense: Janzen-Korchnoi Gambit	`1. d4 f5 2. h3 Nf6 3. g4`	5
Dutch Defense: Kingfisher Gambit	`1. d4 f5 2. Nc3 d5 3. e4`	5
Dutch Defense: Manhattan Gambit, Anti-Classical Line	`1. d4 f5 2. Qd3 e6 3. g4`	5
Dutch Defense: Manhattan Gambit, Anti-Leningrad	`1. d4 f5 2. Qd3 g6 3. g4`	5
Dutch Defense: Manhattan Gambit, Anti-Modern	`1. d4 f5 2. Qd3 d6 3. g4`	5
Dutch Defense: Manhattan Gambit, Anti-Stonewall	`1. d4 f5 2. Qd3 d5 3. g4`	5
Dutch Defense: Senechaud Gambit	`1. d4 f5 2. Bf4 e6 3. g4`	5
Dutch Defense: Spielmann Gambit	`1. d4 f5 2. Nc3 Nf6 3. g4`	5
Dutch Defense: Krejcik Gambit, Tate Gambit	`1. d4 f5 2. g4 fxg4 3. e4 d5 4. Nc3`	7