Pterodactyl defence
1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 c5 5. Nf3 Qa5
White plays the queen's pawn to d4. Black plays the queen's pawn to d6. White moves the c-pawn to c4.
Black plays the g-pawn to g6. White develops the knight to c3. Black develops the dark-squared bishop to g7.
White plays the king's pawn to e4. Black pushes the c-pawn to c5. White transfers the knight to f3.
Black deploys the queen to a5.