This is a thorough analysis of the Two Knight's Defense. It arises from the Italian Game.
Links to Wikipedia
The Bishop's Opening transposing to a Two Knight's.
The Steinitz Variation with 9....Bxh3 of the Two Knights Defense
The Morphy variation of the Two Knight's Defense.
A variant of the Max Lange Attack. With different opening move order. I have attached few games of the yesteryear players in this game so have fun!
The Steinitz Variation with 9...Bd6
The Steinitz Variation with 9...Bc5
TWO KNIGHTS DEFENSE: Wilkes-Barre Variation (also called Traxler Counterattack)
Two knights defence (Modern bishop's opening)