Tree path 8 levels King's Pawn Game › Sicilian Defense › Sicilian Defense › Hyperaccelerated Dragon › Sicilian Defense: Hyperaccelerated Dragon › Sicilian Defense: Hyperaccelerated Pterodactyl › Modern Defense: Pterodactyl Variation › Pterodactyl Defense: Sicilian, Anhanguera
- Chess Codex
- King's Pawn Game B00
- Sicilian Defense B20
- Sicilian Defense B27
- Hyperaccelerated Dragon B27
- Sicilian Defense: Hyperaccelerated Dragon B27
- Sicilian Defense: Hyperaccelerated Pterodactyl B27
- Modern Defense: Pterodactyl Variation B27
- Pterodactyl Defense: Sicilian, Anhanguera B27 you are here
Pterodactyl Defense: Sicilian, Anhanguera
Overview
Pterodactyl Defense: Sicilian, Anhanguera is a specific line in the Semi-Open Games family (ECO B27), 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 is reached after 9 plies of play, with the move sequence 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. Be3.
The line refines Modern Defense: Pterodactyl Variation, 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
- B27
- 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
18,248 games · White 44.7% / Draw 5.2% / Black 50.1%
| Moves | Games | W / D / B |
|---|---|---|
| Nf6 | 11,718 | |
| Nc6 | 2,968 | |
| cxd4 | 1,615 | |
| d6 | 723 | |
| Qb4 | 583 | |
| Qb6 | 428 | |
| b6 | 64 | |
| a6 | 41 |
Source: Lichess Opening Explorer · cached 2026-09-26 02:00:09
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