Pirc - Sveshnikov system
1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. g3
White plays the king's pawn to e4. Black advances the queen's pawn to d6. White advances the queen's pawn to d4.
Black develops the knight to f6. White develops the knight to c3. Black pushes the g-pawn to g6.
White pushes the g-pawn to g3.