ECO B27: Sicilian Defense, Pterodactyl Defense & more
ECO B27 is part of volume B, Semi-Open Games.
The Lichess chess-openings dataset files 23 named lines under it, from 3 different openings.
The shortest is Sicilian Defense:
1. e4 c5 2. Nf3.
That position has come up in 210,455,240 Lichess games between players rated 1600 to 2500: White won 47.8%, 5.0% were drawn and Black won 47.2%.
| Opening | Moves | Games | Length |
|---|---|---|---|
| Sicilian Defense | 1. e4 c5 2. Nf3 |
210.5M | 2 moves |
| Sicilian Defense: Brussels Gambit | 1. e4 c5 2. Nf3 f5 |
42K | 2 moves |
| Sicilian Defense: Bücker Variation | 1. e4 c5 2. Nf3 h6 |
130K | 2 moves |
| Sicilian Defense: Hyperaccelerated Dragon | 1. e4 c5 2. Nf3 g6 |
10.3M | 2 moves |
| Sicilian Defense: Jalalabad Variation | 1. e4 c5 2. Nf3 e5 |
335K | 2 moves |
| Sicilian Defense: Katalimov Variation | 1. e4 c5 2. Nf3 b6 |
693K | 2 moves |
| Sicilian Defense: Mongoose Variation | 1. e4 c5 2. Nf3 Qa5 |
33K | 2 moves |
| Sicilian Defense: Polish Gambit | 1. e4 c5 2. Nf3 b5 |
35K | 2 moves |
| Sicilian Defense: Quinteros Variation | 1. e4 c5 2. Nf3 Qc7 |
160K | 2 moves |
| Sicilian Defense: Hyperaccelerated Dragon | 1. e4 c5 2. Nf3 g6 3. d4 |
5.8M | 3 moves |
| Sicilian Defense: Acton Extension | 1. e4 c5 2. Nf3 g6 3. c4 Bh6 |
98 | 3 moves |
| Sicilian Defense: Double-Dutch Gambit | 1. e4 c5 2. Nf3 f5 3. exf5 Nh6 |
1,279 | 3 moves |
| Sicilian Defense: Frederico Variation | 1. e4 c5 2. Nf3 g6 3. d4 f5 |
58 | 3 moves |
| Sicilian Defense: Hyperaccelerated Pterodactyl | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 |
1.9M | 3 moves |
| Modern Defense: Pterodactyl Variation | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 |
26K | 4 moves |
| Pterodactyl Defense: Western, Pterodactyl | 1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. d4 Qa5 |
23K | 4 moves |
| Pterodactyl Defense: Western, Rhamphorhynchus | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ |
324K | 4 moves |
| Pterodactyl Defense: Sicilian, Anhanguera | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. Be3 |
18K | 5 moves |
| Pterodactyl Defense: Sicilian, Benoni Gambit | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. d5 |
3,445 | 5 moves |
| Pterodactyl Defense: Sicilian, Rhamphorhynchus | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 |
97K | 5 moves |
| Pterodactyl Defense: Sicilian, Unpin | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. Bd2 |
4,918 | 5 moves |
| Pterodactyl Defense: Sicilian, Pteranodon | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc3 |
32K | 6 moves |
| Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc3 Qxc3+ |
30K | 6 moves |