The Sicilian, Siroccopteryx is a variation of the Pterodactyl Defense, catalogued as ECO B06. The line runs 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc4, reaching the position shown below after 9 half-moves.
White holds the centre with pawns on d4 and e4, and one pawn capture is available, so the structure has not settled yet. White is ahead in development, with three minor pieces out to Black's one. It is Black to move after five moves.
On the Pterodactyl Defense generally: ECO A40. A chess opening with 34 known variations.
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See all 17 Pterodactyl Defense variations →
The Sicilian, Siroccopteryx goes 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc4. It is a variation of the Pterodactyl Defense and is catalogued as ECO B06.
The Sicilian, Siroccopteryx is ECO B06. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Pterodactyl Defense.
Stockfish evaluates the position after 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc4 at -1.63 at depth 18, which is a clear advantage for Black. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
White holds the centre with pawns on d4 and e4, and one pawn capture is available, so the structure has not settled yet. White is ahead in development, with three minor pieces out to Black's one. It is Black to move.