This wild gambit, named the Lolli Gambit^[1], sacrifices a bishop on f7. Although this gambit is unsound, the resulting positions after 5...Kxf7 6. Ne5+ are unclear and chaotic. Black has two legal responses to the check.

5...Kxf7 is the obvious move, accepting the gambit and capturing the bishop on f7. Black's king may be unsafe, but after 6. Ne5+ Ke8 7. Qxg4 Nf6 8. Qxf4 d6 9. Nf3 Rg8! White has insufficient compensation.

Declining the gambit with 5...Ke7?? is a horrible idea due to the resulting attack that starts after 6. O-O!! gxf3 7. Qxf3 Kxf7 8. Qh5+! and Black's king is exposed in the middle of the board with the queen and rook attacking it.

The Lolli Gambit is associated with Italian chess player Giambattista Lolli^[2].