Updated: Feb 12
Hamppe-Algaier-Thoroid Gambit involves a sacrifice which leads to the king out in the open. Though there are suggestions that it is a complete loss for white under the pressure of time if playing a blitz game if not fully prepared the results might go either way.
1.e4 e5 2.f4 exf4 3.Nf3 Nc6 4.Nc3 g5 5.h4 g4 6.Ng5 h6 7.Nxf7 Kxf7 8.d4 f3 9.Bc4+ d5 10.Bxd5+ Kg7 11.gxf3
Opening up the already opened kingside which gives an opportunity for white.
Bb4 12.Be3 Nf6 13.Bc4 Qe7 14.Qe2 gxf3 15.Qxf3 Bg4 16.Rg1 h5 17.e5 Nxe5
A wrong sacrifice going after the two central pawns
18.dxe5 Qxe5 19.0-0-0 Bc5 20.Rd7+ Nxd7 21.Qf7#
And a checkmate!!
In the Hamppe-Muzio Gambit and Hamppe-Allgair-Thoroid Gambit, white should be in a position to play a really aggressive chess and ready to sacrifice a piece and play the game worthy of the sacrificed piece. If the white player is a beginner or an intermediate player then this is not the opening rightfully recommended even for the blitz or bullet games.