Tree path 6 levels King's Pawn Game › Modern Defense › Modern Defense › Standard Line › Modern Defense: Modern Pterodactyl › Pterodactyl Defense: Sicilian, Quetzalcoatlus
- Chess Codex
- King's Pawn Game B00
- Modern Defense B06
- Modern Defense B06
- Standard Line B06
- Modern Defense: Modern Pterodactyl B06
- Pterodactyl Defense: Sicilian, Quetzalcoatlus B06 you are here
Pterodactyl Defense: Sicilian, Quetzalcoatlus
Overview
Pterodactyl Defense: Sicilian, Quetzalcoatlus is a named branch in the Semi-Open Games group of chess theory, classified under ECO B06.
The Semi-Open Games group covers semi-open games — replies to 1.e4 where Black declines the symmetrical 1…e5 in favour of an asymmetric pawn structure.
Play reaches this position via 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Be2 d6, after 10 plies of opening development.
In the opening tree, this line branches off from Modern Defense: Modern Pterodactyl, part of the broader King's Pawn Game system.
Use the board to walk through every move, check how the position has scored on Lichess, or take it head-to-head against Stockfish.
- ECO code
- B06
- Group
- Semi-Open Games (B)
- Plies
- 10
This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.
Statistics from Lichess
92 games · White 54.3% / Draw 5.4% / Black 40.2%
| Moves | Games | W / D / B |
|---|---|---|
| O-O | 68 | |
| Be3 | 10 | |
| Bd2 | 5 | |
| dxc5 | 4 | |
| h3 | 3 | |
| Qd3 | 2 |
Source: Lichess Opening Explorer · cached 2026-09-26 02:13:04
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Submissions are reviewed before publishing.