Pterodactyl Defense
33 named lines, ECO A40–B27. The main position arises after1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Be3.
| Line | Games | White / draw / Black |
|---|---|---|
| Eastern, Anhanguera B06 · 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Be3 | 312 | |
| Eastern, Benoni B06 · 1. d4 g6 2. e4 Bg7 3. Nc3 c5 4. d5 | 82 | |
| Queen Pterodactyl, Quiet Line A40 · 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. e3 | 330 | |
| Austrian, Austriadactylus Western B06 · 1. e4 g6 2. d4 Bg7 3. f4 c5 4. Nf3 Qa5+ | 1 | |
| Austrian, Grand Prix Pterodactyl B06 · 1. e4 g6 2. Nc3 Bg7 3. f4 c5 4. Nf3 Qa5 | – | |
| Austrian, Pteranodon B06 · 1. e4 g6 2. d4 Bg7 3. f4 c5 4. c3 Qa5 | 2 | |
| Central, Benoni Pterodactyl A40 · 1. d4 g6 2. c4 Bg7 3. e4 c5 4. d5 Qa5+ | 2 | |
| Eastern, Benoni Pterodactyl B06 · 1. d4 g6 2. Nc3 Bg7 3. e4 c5 4. d5 Qa5 | 4 | |
| Eastern, Rhamphorhynchus B06 · 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Qa5 | 106 | |
| Fianchetto, King Pterodactyl B06 · 1. e4 g6 2. d4 Bg7 3. g3 c5 4. Nf3 Qa5+ | – | |
| Fianchetto, Queen Benoni Pterodactyl A40 · 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Qa5 | 16 | |
| Fianchetto, Queen Pterodactyl A40 · 1. d4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 Qa5+ | 2 | |
| Fianchetto, Rhamphorhynchus B06 · 1. e4 g6 2. d4 Bg7 3. g3 c5 4. dxc5 Qa5+ | 1 | |
| Western, Anhanguera B06 · 1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. Be3 Qa5+ | 7 | |
| Western, Pterodactyl B27 · 1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. d4 Qa5 | 1 | |
| Western, Rhamphorhynchus B27 · 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ | 437 | |
| Sicilian, Anhanguera B27 · 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. Be3 | 5 | |
| Sicilian, Benoni Gambit B27 · 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. d5 | – | |
| Sicilian, Rhamphorhynchus B27 · 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 | 132 | |
| Sicilian, Siroccopteryx B06 · 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc4 | 1 | |
| Sicilian, Unpin B27 · 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. Bd2 | 1 | |
| Pterodactyl Defense A42 · 1. Nf3 c5 2. c4 g6 3. d4 Bg7 4. e4 Qa5+ 5. Nc3 d6 | – | |
| Central, Anhanguera B06 · 1. e4 g6 2. d4 Bg7 3. c4 c5 4. Nc3 d6 5. Be3 Qa5 | – | |
| Central, Benoni Quetzalcoatlus B06 · 1. e4 g6 2. d4 Bg7 3. c4 c5 4. d5 d6 5. Nc3 Qa5 | 2 | |
| Central, Bogolubovia A42 · 1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 c5 5. Nge2 Qa5 | 1 | |
| Central, Quetzalcoatlus Gambit B06 · 1. e4 g6 2. d4 Bg7 3. c4 c5 4. Nc3 d6 5. dxc5 Qa5 | – | |
| Eastern, Benoni Pteranodon B06 · 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 Qa5 | – | |
| Eastern, Pteranodon B06 · 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Bxc3+ 5. bxc3 Qa5 | 56 | |
| Fianchetto, Queen Pteranodon A40 · 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 Qa5 | 63 | |
| Sicilian, Quetzalcoatlus B06 · 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Be2 d6 | – | |
| Western, Siroccopteryx B06 · 1. e4 g6 2. Nf3 Bg7 3. d4 c5 4. Bc4 cxd4 5. Nxd4 Qa5+ | 1 | |
| Sicilian, Pteranodon B27 · 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc3 | 29 | |
| Central, Benoni Beefeater Pterodactyl A40 · 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 d6 5. e4 Bxc3+ 6. bxc3 Qa5 | 3 |