ECO C00: French Defense & Rat Defense

ECO C00 is part of volume C — Open Games. The Lichess chess-openings dataset files 43 named lines under it, from 2 different openings. The shortest is French Defense: 1. e4 e6.

That position has come up in 172,695,532 Lichess games between players rated 1600 to 2500: White won 47.9%, 4.9% were drawn and Black won 47.2%.

Opening	Moves	Plies
French Defense	`1. e4 e6`	2
French Defense: Banzai-Leong Gambit	`1. e4 e6 2. b4`	3
French Defense: Bird Invitation	`1. e4 e6 2. Bb5`	3
French Defense: Chigorin Variation	`1. e4 e6 2. Qe2`	3
French Defense: Horwitz Attack	`1. e4 e6 2. b3`	3
French Defense: King's Indian Attack	`1. e4 e6 2. d3`	3
French Defense: Knight Variation	`1. e4 e6 2. Nf3`	3
French Defense: La Bourdonnais Variation	`1. e4 e6 2. f4`	3
French Defense: Normal Variation	`1. e4 e6 2. d4`	3
French Defense: Queen's Knight	`1. e4 e6 2. Nc3`	3
French Defense: Réti-Spielmann Attack	`1. e4 e6 2. g3`	3
French Defense: Steiner Variation	`1. e4 e6 2. c4`	3
French Defense: Steinitz Attack	`1. e4 e6 2. e5`	3
French Defense	`1. e4 e6 2. d4 d5`	4
French Defense: Baeuerle Gambit	`1. e4 e6 2. d4 b5`	4
French Defense: Franco-Hiva Gambit	`1. e4 e6 2. d4 f5`	4
French Defense: Franco-Sicilian Defense	`1. e4 e6 2. d4 c5`	4
French Defense: King's Indian Attack, Franco-Hiva Gambit	`1. e4 e6 2. d3 f5`	4
French Defense: Knight Variation, Franco-Hiva Gambit	`1. e4 e6 2. Nf3 f5`	4
French Defense: Mediterranean Defense	`1. e4 e6 2. d4 Nf6`	4
French Defense: St. George Defense	`1. e4 e6 2. d4 a6`	4
Rat Defense: Small Center Defense	`1. d4 e6 2. e4 d6`	4
French Defense: Alapin Gambit	`1. e4 e6 2. d4 d5 3. Be3`	5
French Defense: Banzai-Leong Gambit, Pinova Gambit	`1. e4 e6 2. b4 Bxb4 3. e5`	5
French Defense: Diemer-Duhm Gambit	`1. e4 e6 2. d4 d5 3. c4`	5
French Defense: Franco-Hiva Gambit Accepted	`1. e4 e6 2. d4 f5 3. exf5`	5
French Defense: Horwitz Attack, Papa-Ticulat Gambit	`1. e4 e6 2. b3 d5 3. Bb2`	5
French Defense: Morphy Gambit	`1. e4 e6 2. d4 d5 3. Nh3`	5
French Defense: Pelikan Variation	`1. e4 e6 2. Nc3 d5 3. f4`	5
French Defense: Perseus Gambit	`1. e4 e6 2. d4 d5 3. Nf3`	5
French Defense: Schlechter Variation	`1. e4 e6 2. d4 d5 3. Bd3`	5
French Defense: St. George Defense, Three Pawn Attack	`1. e4 e6 2. d4 a6 3. c4`	5
French Defense: Two Knights Variation	`1. e4 e6 2. Nf3 d5 3. Nc3`	5
French Defense: Diemer-Duhm Gambit Accepted	`1. e4 e6 2. d4 d5 3. c4 dxe4`	6
French Defense: La Bourdonnais Variation, Reuter Gambit	`1. e4 e6 2. f4 d5 3. Nf3 dxe4`	6
French Defense: St. George Defense, Sanky-George Gambit	`1. e4 e6 2. d4 a6 3. c4 b5`	6
French Defense: Carlson Gambit	`1. e4 e6 2. d4 d5 3. Nf3 dxe4 4. Ne5`	7
French Defense: Orthoschnapp Gambit	`1. e4 e6 2. c4 d5 3. cxd5 exd5 4. Qb3`	7
French Defense: Wing Gambit	`1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4`	7
French Defense: Hoffmann Gambit	`1. e4 e6 2. d4 d5 3. Qe2 e5 4. f4 exf4`	8
French Defense: St. George Defense, St. George Gambit	`1. e4 e6 2. d4 a6 3. c4 b5 4. cxb5 axb5`	8
French Defense: Reversed Philidor Formation	`1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Nc6 5. Be2`	9
French Defense: St. George Defense, Traditional Line	`1. e4 e6 2. d4 a6 3. Nf3 b5 4. Bd3 c5 5. c3 Bb7 6. O-O Nf6`	12