A40 · Pterodactyl Defense: Queen Pterodactyl, Quiet Line

Pterodactyl Defense: Fianchetto, Queen Benoni Pterodactyl

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Qa5
♜♞♝♚♞♜♟♟♟♟♟♝♟♟♛♟♟♟♞♟♟♟♟♟♟♜♝♛♚♝♞♜
The position after 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Qa5, White to move.

In the Pterodactyl Defense: Fianchetto, Queen Benoni Pterodactyl, aim to understand the plans and pawn structures, not just memorize the first moves.

See how you play it

The Pterodactyl Defense: Fianchetto, Queen Benoni Pterodactyl is a chess opening classified under ECO code A40. It is reached after the moves 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Qa5: 8 moves in, with White to play.

It belongs to the Pterodactyl Defense family — one of many ways the line can branch. Understanding the parent system’s plans is the fastest way to play this variation well.

Club players rarely lose the Pterodactyl Defense: Fianchetto, Queen Benoni Pterodactyl in the opening itself. They lose it a few moves later, when the plan behind the moves runs out: that is what reading your own games in this line shows you.

Play the Pterodactyl Defense: Fianchetto, Queen Benoni Pterodactyl? See where you go wrong.
Deepline reviews your real games, finds the exact moves that cost you, and trains the fixes.
Analyze my games free →

Related openings

Queen's Pawn GameAustralian DefenseBenoni Defense: Franco-Sicilian HybridBorg Defense: Borg GambitColle System: Pterodactyl VariationColle System: Siroccopteryx VariationEnglish DefenseEnglish DefenseEnglish Defense: Eastbourne GambitEnglish Defense: Hartlaub Gambit Accepted

See how you play this opening