Tree path 6 levels King's Pawn Game › Modern Defense › Modern Defense › Standard Line › Modern Defense: Modern Pterodactyl › Pterodactyl Defense: Sicilian, Quetzalcoatlus
B06

Pterodactyl Defense: Sicilian, Quetzalcoatlus

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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
Parent
Modern Defense: Modern Pterodactyl

This overview is generated automatically from the opening's metadata. A more detailed, human-written description is on the way — and you can speed it up by suggesting one yourself.

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