Tree path 4 levels King's Pawn Game › Modern Defense › Modern Defense › Pterodactyl Defense: Western, Anhanguera
- Chess Codex
- King's Pawn Game B00
- Modern Defense B06
- Modern Defense B06
- Pterodactyl Defense: Western, Anhanguera B06 you are here
Pterodactyl Defense: Western, Anhanguera
Overview
Pterodactyl Defense: Western, Anhanguera is a variation within the Semi-Open Games family, indexed as 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.
It is reached after 8 plies of play, with the move sequence 1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. Be3 Qa5+.
It is a variation of Modern Defense, which itself descends from the root opening King's Pawn Game.
Step through the moves on the interactive board below, review the live Lichess statistics, or play this position against Stockfish at one of six difficulty levels.
- ECO code
- B06
- Group
- Semi-Open Games (B)
- Plies
- 8
- Parent
- Modern Defense
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
7,765 games · White 48.0% / Draw 5.0% / Black 47.1%
| Moves | Games | W / D / B |
|---|---|---|
| c3 | 3,667 | |
| Nc3 | 2,948 | |
| Qd2 | 652 | |
| Nbd2 | 260 | |
| Bd2 | 234 | |
| Nfd2 | 2 | |
| b4 | 1 | |
| Ke2 | 1 |
Source: Lichess Opening Explorer · cached 2026-09-26 01:47:09
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Submissions are reviewed before publishing.