Gruenfeld - Spike gambit
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. g4
White pushes the queen's pawn to d4. Black develops the knight to f6. White advances the c-pawn to c4.
Black advances the g-pawn to g6. White develops the knight to c3. Black pushes the queen's pawn to d5.
White moves the g-pawn to g4.