2...Nf6
White has three main options: 3.f4, 3.Bc4 and 3.g3. Also possible, but usually without independent significance, is 3.Nf3, when 3...Nc6 transposes to the Four Knights Game.
Read more about this topic: Vienna Game
2...Nf6
White has three main options: 3.f4, 3.Bc4 and 3.g3. Also possible, but usually without independent significance, is 3.Nf3, when 3...Nc6 transposes to the Four Knights Game.
Read more about this topic: Vienna Game