Tree path 6 levels King's Pawn Game › Modern Defense › Modern Defense › Standard Line › Modern Defense: Modern Pterodactyl › Pterodactyl Defense: Sicilian, Siroccopteryx
- Chess Codex
- King's Pawn Game B00
- Modern Defense B06
- Modern Defense B06
- Standard Line B06
- Modern Defense: Modern Pterodactyl B06
- Pterodactyl Defense: Sicilian, Siroccopteryx B06 you are here
Pterodactyl Defense: Sicilian, Siroccopteryx
Overview
Pterodactyl Defense: Sicilian, Siroccopteryx is a specific line in the Semi-Open Games family (ECO B06), arising from a recognised theoretical position.
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.
It begins with 9 plies and takes 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc4 to reach the canonical position.
The line refines Modern Defense: Modern Pterodactyl, which traces back to the root opening King's Pawn Game.
Explore the position on the interactive board, study its real-world results from Lichess, and challenge the engine when you are ready.
- ECO code
- B06
- Group
- Semi-Open Games (B)
- Plies
- 9
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
3,695 games · White 33.1% / Draw 3.2% / Black 63.8%
| Moves | Games | W / D / B |
|---|---|---|
| cxd4 | 2,531 | |
| Nf6 | 505 | |
| Nc6 | 348 | |
| Qb4 | 104 | |
| e6 | 98 | |
| d6 | 36 | |
| a6 | 31 | |
| Qb6 | 28 |
Source: Lichess Opening Explorer · cached 2026-09-26 01:59:11
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Submissions are reviewed before publishing.