Richter-Veresov attack - Richter variation
1. d4 d5 2. Nc3 Nf6 3. Bg5 Bf5 4. f3
White advances the queen's pawn to d4. Black plays the queen's pawn to d5. White develops the knight to c3.
Black develops the knight to f6. White develops the dark-squared bishop to g5. Black develops the light-squared bishop to f5.
White advances the f-pawn to f3.