Four knights - Rubinstein counter-gambit
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4
White advances the king's pawn to e4. Black advances the king's pawn to e5. White develops the knight to f3.
Black develops the knight to c6. White jumps the knight to c3. Black transfers the knight to f6.
White develops the light-squared bishop to b5. Black moves the knight to d4.