Pterodactyl Defense: Fianchetto, Rhamphorhynchus
1. e4 g6 2. d4 Bg7 3. g3 c5 4. dxc5 Qa5+
The Pterodactyl Defense: Fianchetto, Rhamphorhynchus is a chess opening classified as ECO B06, reached after 1. e4 g6 2. d4 Bg7 3. g3 c5 4. dxc5 Qa5+. It is a line of the Pterodactyl Defense. White is to move.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 1 times by this move order. White won 0%, 0% were drawn and Black won 100%. The most popular continuation is 5. c3 (100% of games).
Engine evaluation: +0.46 (Stockfish, depth 30; best line 5. c3 Qxc5 6. Bg2 Nf6 7. Ne2 d6)
- ECO
- B06
- Moves
- 8 plies
- FEN
rnb1k1nr/pp1pppbp/6p1/q1P5/4P3/6P1/PPP2P1P/RNBQKBNR w KQkq - 1 5- PGN
1. e4 g6 2. d4 Bg7 3. g3 c5 4. dxc5 Qa5+
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 2000+ | 1 | |
| All | 1 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 5. c3 | 1 (100%) |
Master games
5 over-the-board games are classified under this line (White 0%, draw 40%, Black 60%). The strongest:
- IM Stanislav Tsyhanchuk (2398) – GM Tiger Hillarp Persson (2551) 0-1 · Rilton Cup 2013-14 · 2014-01-01
- FM Jakub Kusa (2336) – IM Daniel Barria Zuniga (2341) 0-1 · Titled Tuesday 19th Jan · 2021-01-19
- FM Rushan Bogaudinov (1912) – FM Aleks Sahakyan (2287) 0-1 · Titled Tue 23rd Jul Late · 2024-07-23
- Bram Van Dijk (1982) – Jan Havenaar (2091) 1/2-1/2 · 45th Guernsey Open 2019 · 2019-10-20
- Bram Van Dijk (1982) – Jan Havenaar (2091) 1/2-1/2 · 45th Guernsey Open 2019 · 2019-10-20
Search all games of the Pterodactyl Defense: Fianchetto, Rhamphorhynchus and its sub-variations
Highest-rated Lichess games
- plsdonthurtme69 (2384) – Cangaroo64 (2391) 0-1 · 2026-09-06 · 180 + 0s
Comes from
Modern Defense (2. d4 Bg7) 1. e4 g6 2. d4 Bg7
More Pterodactyl Defense lines (all)
- Pterodactyl Defense: Central, Benoni Beefeater Pterodactyl A40
- Pterodactyl Defense: Central, Benoni Pterodactyl A40
- Pterodactyl Defense: Fianchetto, Queen Benoni Pterodactyl A40
- Pterodactyl Defense: Fianchetto, Queen Pteranodon A40
- Pterodactyl Defense: Fianchetto, Queen Pterodactyl A40
- Pterodactyl Defense: Queen Pterodactyl, Quiet Line A40
- Pterodactyl Defense A42
- Pterodactyl Defense: Central, Bogolubovia A42
- Pterodactyl Defense: Austrian, Austriadactylus Western B06
- Pterodactyl Defense: Austrian, Grand Prix Pterodactyl B06
- Pterodactyl Defense: Austrian, Pteranodon B06
- Pterodactyl Defense: Central, Anhanguera B06
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.