Ignoring the attack on the e pawn in favour of opening the centre for development. This is now called the Elephant Gambit, a favourite of Dr Philip Corbin, FIDE master and Barbadian Olympiad player who has championed the Elephant Gambit since the 1970s.
3. Nf3xe5 dxe4 4. Bf1c4
White develops and hits f7.
4... Qd8g5
Black forks the knight and the pawn on g2.
5. Bc4xf7
The check forces the Black King into the open.
5... Ke8e7 6. d4
Protecting the knight with tempo by attacking the Queen.
6... Qg5xg2
Grabbing the pawn back and forcing a rook move by which White castling Kingside is prevented. Black argues that this compensates for his open king and loss of castling rights.
7. Rh1f1 Nb8d7
A move the gambit theorists believe best threatening to take the knight and after dxe5 take the bishop.
8. Qd1h5
White tries to keep the initiative but my understanding is the theorists believe this move is faulty. Retreating the bishop is probably safer. To be fair if white is playing without knowledge of theory this looks very strong, especially in a one day time out game. More time was probably required to see how Black can unpick this attack and gain advantage.
8... Ng8f6
Attacking the Queen.
9. Bc1g5
Pinning the knight but blocking the queen's protection on the knight on e5.