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 | Games | Length |
|---|---|---|---|
| French Defense | 1. e4 e6 |
172.7M | 1 move |
| French Defense: Banzai-Leong Gambit | 1. e4 e6 2. b4 |
17K | 2 moves |
| French Defense: Bird Invitation | 1. e4 e6 2. Bb5 |
192K | 2 moves |
| French Defense: Chigorin Variation | 1. e4 e6 2. Qe2 |
1M | 2 moves |
| French Defense: Horwitz Attack | 1. e4 e6 2. b3 |
1.4M | 2 moves |
| French Defense: King's Indian Attack | 1. e4 e6 2. d3 |
5.6M | 2 moves |
| French Defense: Knight Variation | 1. e4 e6 2. Nf3 |
42.2M | 2 moves |
| French Defense: La Bourdonnais Variation | 1. e4 e6 2. f4 |
9.1M | 2 moves |
| French Defense: Normal Variation | 1. e4 e6 2. d4 |
99.3M | 2 moves |
| French Defense: Queen's Knight | 1. e4 e6 2. Nc3 |
8.7M | 2 moves |
| French Defense: Réti-Spielmann Attack | 1. e4 e6 2. g3 |
625K | 2 moves |
| French Defense: Steiner Variation | 1. e4 e6 2. c4 |
4.1M | 2 moves |
| French Defense: Steinitz Attack | 1. e4 e6 2. e5 |
2.6M | 2 moves |
| French Defense | 1. e4 e6 2. d4 d5 |
75.4M | 2 moves |
| French Defense: Baeuerle Gambit | 1. e4 e6 2. d4 b5 |
37K | 2 moves |
| French Defense: Franco-Hiva Gambit | 1. e4 e6 2. d4 f5 |
253K | 2 moves |
| French Defense: Franco-Sicilian Defense | 1. e4 e6 2. d4 c5 |
7M | 2 moves |
| French Defense: King's Indian Attack, Franco-Hiva Gambit | 1. e4 e6 2. d3 f5 |
17K | 2 moves |
| French Defense: Knight Variation, Franco-Hiva Gambit | 1. e4 e6 2. Nf3 f5 |
94K | 2 moves |
| French Defense: Mediterranean Defense | 1. e4 e6 2. d4 Nf6 |
1.4M | 2 moves |
| French Defense: St. George Defense | 1. e4 e6 2. d4 a6 |
880K | 2 moves |
| Rat Defense: Small Center Defense | 1. d4 e6 2. e4 d6 |
5.9M | 2 moves |
| French Defense: Alapin Gambit | 1. e4 e6 2. d4 d5 3. Be3 |
251K | 3 moves |
| French Defense: Banzai-Leong Gambit, Pinova Gambit | 1. e4 e6 2. b4 Bxb4 3. e5 |
61 | 3 moves |
| French Defense: Diemer-Duhm Gambit | 1. e4 e6 2. d4 d5 3. c4 |
478K | 3 moves |
| French Defense: Franco-Hiva Gambit Accepted | 1. e4 e6 2. d4 f5 3. exf5 |
135K | 3 moves |
| French Defense: Horwitz Attack, Papa-Ticulat Gambit | 1. e4 e6 2. b3 d5 3. Bb2 |
707K | 3 moves |
| French Defense: Morphy Gambit | 1. e4 e6 2. d4 d5 3. Nh3 |
909 | 3 moves |
| French Defense: Pelikan Variation | 1. e4 e6 2. Nc3 d5 3. f4 |
469K | 3 moves |
| French Defense: Perseus Gambit | 1. e4 e6 2. d4 d5 3. Nf3 |
671K | 3 moves |
| French Defense: Schlechter Variation | 1. e4 e6 2. d4 d5 3. Bd3 |
1.7M | 3 moves |
| French Defense: St. George Defense, Three Pawn Attack | 1. e4 e6 2. d4 a6 3. c4 |
251K | 3 moves |
| French Defense: Two Knights Variation | 1. e4 e6 2. Nf3 d5 3. Nc3 |
3.3M | 3 moves |
| French Defense: Diemer-Duhm Gambit Accepted | 1. e4 e6 2. d4 d5 3. c4 dxe4 |
354K | 3 moves |
| French Defense: La Bourdonnais Variation, Reuter Gambit | 1. e4 e6 2. f4 d5 3. Nf3 dxe4 |
161K | 3 moves |
| French Defense: St. George Defense, Sanky-George Gambit | 1. e4 e6 2. d4 a6 3. c4 b5 |
37K | 3 moves |
| French Defense: Carlson Gambit | 1. e4 e6 2. d4 d5 3. Nf3 dxe4 4. Ne5 |
128K | 4 moves |
| French Defense: Orthoschnapp Gambit | 1. e4 e6 2. c4 d5 3. cxd5 exd5 4. Qb3 |
352K | 4 moves |
| French Defense: Wing Gambit | 1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 |
945K | 4 moves |
| French Defense: Hoffmann Gambit | 1. e4 e6 2. d4 d5 3. Qe2 e5 4. f4 exf4 |
58 | 4 moves |
| French Defense: St. George Defense, St. George Gambit | 1. e4 e6 2. d4 a6 3. c4 b5 4. cxb5 axb5 |
14K | 4 moves |
| French Defense: Reversed Philidor Formation | 1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Nc6 5. Be2 |
10K | 5 moves |
| 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 |
25K | 6 moves |