Pterodactyl Defense (프테로닥틸 방어)

한국어

The Pterodactyl Defense family holds 33 lines. The boards below follow its shortest line from the first move.

The Korean name in brackets is ours, not an official translation. The original name is English.

Main line

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. e3

One move per board, left to right. The two outlined squares are the move just played.

1. d4
1… g6
2. c4
2… Bg7
3. Nc3
3… c5
4. e3

Play it yourself

Pterodactyl Defense (A40)

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. e3

Tap a piece and then the square it goes to. When the move matches the data, the reply follows on its own.

Play it yourself

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ECO codes here

Variations in this family

Ordered by ECO code. A blank label means the entry carries the family name alone.

  1. A40Queen Pterodactyl, Quiet Line7 movesPlay this line

    1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. e3

  2. A40Central, Benoni Pterodactyl8 movesPlay this line

    1. d4 g6 2. c4 Bg7 3. e4 c5 4. d5 Qa5+

  3. A40Fianchetto, Queen Benoni Pterodactyl8 movesPlay this line

    1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Qa5

  4. A40Fianchetto, Queen Pterodactyl8 movesPlay this line

    1. d4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 Qa5+

  5. A40Fianchetto, Queen Pteranodon10 movesPlay this line

    1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 Qa5

  6. A40Central, Benoni Beefeater Pterodactyl12 movesPlay this line

    1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 d6 5. e4 Bxc3+ 6. bxc3 Qa5

  7. A42Pterodactyl Defense10 movesPlay this line

    1. Nf3 c5 2. c4 g6 3. d4 Bg7 4. e4 Qa5+ 5. Nc3 d6

  8. A42Central, Bogolubovia10 movesPlay this line

    1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 c5 5. Nge2 Qa5

  9. B06Eastern, Anhanguera7 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Be3

  10. B06Eastern, Benoni7 movesPlay this line

    1. d4 g6 2. e4 Bg7 3. Nc3 c5 4. d5

  11. B06Austrian, Austriadactylus Western8 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. f4 c5 4. Nf3 Qa5+

  12. B06Austrian, Grand Prix Pterodactyl8 movesPlay this line

    1. e4 g6 2. Nc3 Bg7 3. f4 c5 4. Nf3 Qa5

  13. B06Austrian, Pteranodon8 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. f4 c5 4. c3 Qa5

  14. B06Eastern, Benoni Pterodactyl8 movesPlay this line

    1. d4 g6 2. Nc3 Bg7 3. e4 c5 4. d5 Qa5

  15. B06Eastern, Rhamphorhynchus8 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Qa5

  16. B06Fianchetto, King Pterodactyl8 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. g3 c5 4. Nf3 Qa5+

  17. B06Fianchetto, Rhamphorhynchus8 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. g3 c5 4. dxc5 Qa5+

  18. B06Western, Anhanguera8 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. Be3 Qa5+

  19. B06Sicilian, Siroccopteryx9 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc4

  20. B06Central, Anhanguera10 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. c4 c5 4. Nc3 d6 5. Be3 Qa5

  21. B06Central, Benoni Quetzalcoatlus10 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. c4 c5 4. d5 d6 5. Nc3 Qa5

  22. B06Central, Quetzalcoatlus Gambit10 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. c4 c5 4. Nc3 d6 5. dxc5 Qa5

  23. B06Eastern, Benoni Pteranodon10 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 Qa5

  24. B06Eastern, Pteranodon10 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Bxc3+ 5. bxc3 Qa5

  25. B06Sicilian, Quetzalcoatlus10 movesPlay this line

    1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Be2 d6

  26. B06Western, Siroccopteryx10 movesPlay this line

    1. e4 g6 2. Nf3 Bg7 3. d4 c5 4. Bc4 cxd4 5. Nxd4 Qa5+

  27. B27Western, Pterodactyl8 movesPlay this line

    1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. d4 Qa5

  28. B27Western, Rhamphorhynchus8 movesPlay this line

    1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+

  29. B27Sicilian, Anhanguera9 movesPlay this line

    1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. Be3

  30. B27Sicilian, Benoni Gambit9 movesPlay this line

    1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. d5

  31. B27Sicilian, Rhamphorhynchus9 movesPlay this line

    1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3

  32. B27Sicilian, Unpin9 movesPlay this line

    1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. Bd2

  33. B27Sicilian, Pteranodon11 movesPlay this line

    1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc3

Other families of similar size

Data collected on 2026-09-07. The original is published as a public domain data set.