1.e4
e5
2.Nf3
Nc6
3.Bc4
Nf6
4.Ng5
d5
5.exd5
Nxd5
Black has sensibly recaptured the pawn and is now eyeballing White's g5-Knight. Not to be deterred, White bodily plunges ahead.
6.Nxf7
Kxf7
7.Qf3+
With this move, White initiates the colorfully named Fried Liver Attack.
White has a double attack against King and the d5-Knight, forcing Black's King into the center.
7...Ke6
By placing his monarch in the midst of the battle, Black hangs onto the extra Knight at a dangerous price. White continues to attack the d5-Knight, which is a feint. Black's King soon becomes a target as well!
8.Nc3
Nce7
9.d4
White makes an excellent move in an attempt to pry open the center.
9...c6!
It would be a mistake to play 9...cxd4 10.Nxd5 Nxd5 11.Qe4+! whereby White regains his sacrificed Knight.
Black has defended the Knight once more.
Playing the Fried Liver Attack will bring you hours of joy. White will do his best to bring all his pieces into play as quickly as possible, while Black will try to hang onto his extra piece and to bring his King back to the relatively safe c7-square. This position deserves close study, and you should play out both sides to see which side has the best-disturbed equilibrium.