Budapest - Alekhine variation - Balogh gambit
1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 d6
White pushes the queen's pawn to d4. Black develops the knight to f6. White plays the c-pawn to c4.
Black pushes the king's pawn to e5. White captures on e5 with the queen's pawn. Black transfers the knight to g4.
White pushes the king's pawn to e4. Black moves the queen's pawn to d6.