Dutch - Leningrad variation
1. d4 f5 2. c4 Nf6 3. g3 g6
White plays the queen's pawn to d4. Black moves the f-pawn to f5. White advances the c-pawn to c4.
Black develops the knight to f6. White pushes the g-pawn to g3. Black advances the g-pawn to g6.