kevinfat wrote on 01/09/22 at 19:38:08:
Fllg wrote on 01/09/22 at 16:16:53:
Don´t forget that 1.e4 e5 2.d4 exd4 3.Nf3 Nf6 is still a Petroff (1.e4 e5 2.Nf3 Nf6 3.d4 exd4). But at least you have prevented Black from playing the main line 3...Nxe4.
Oh yes you're quite right and I suppose that trying for something else with 1.e4 e5 2.d4 exd4 3.Bc4 is no good it looks like because of
1.e4 e5 2.d4 exd4 3.Bc4 Nf6 4.Nf3 Nc6 Hello Kevinfat,
your last line is the Scotch Gambit which is Jones' recommendation against the Two Knights. With 3.Bc4 you give up your aim to reach the Scotch Game, so this is really out of question in your case.
The Scotch Gambit is another story, not at all bad, but after 5.e5 Black has three very different ways to go:
5...d5, 5...Ne4 and 5...Ng4.
After 5.0-0 Black has the equalizer 5...Nxe4 or
can play the risky 5...Bc5 which allows the Max-Lange-Attack.
And 4...Nc6 is not at all forced in your move-order,
instead 4...Bc5 is sensible and 4...Bb4+ is critical.
I think if you aim for the Scotch Game 1.e4 e5 2.d4 exd4 3.Nf3 is forced.
Now 3...Nf6 is a line of the Petroff,
3...c5 looks very greedy,
3...Bc5 is a sensible developing move. 4.Nxd4 could transpose to the Scotch and is more or less forced in our case. (4.Bc4 would lead to the Italian complex.)
I think if Black wants to avoid the Scotch critical is 4...Bxd4 5.Qxd4 Nc6. It is hard to believe that this is a good line for Black.
3...Bb4+ is the critical line.
1.e4 e5 2.d4 exd4 3.Nf3 Bb4+ 4.c3 dxc3 5.Nxc3 Nc6 (5...Nf6 looks risky,
because Black misses the target Bc4 for the counterstrike d7-d5 after e4-e5)
This is a transposition to the Göring Gambit, but I think you have practical
chances that Black is not well prepared.
An easy and very practical equalizer against the Göring Gambit is
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 d5. Instead after 4...dxc3 Black must really know his stuff. Besides 5.Nxc3 White also has 5.Bc4. Because of 4...d5 the Göring is seldom played and as a consequence 4...dxc3 is not worth the effort for Black.
As already mentioned by MartinC the 2.d4-move-order is analysed by Gawain Jones in Coffeehouse Repertoire Volume 2.
Conclusion:
If the transposition 1.e4 e5 2.d4 exd4 3.Nf3 Nf6 is acceptable for White,
then the 2.d4-move-order could be worth a try to reach the Scotch.
Of course you must prepare some sharp lines of the Göring Gambit.
I am quite sure that the theoretical workload after 1.e4 e5 2.d4 is greater than
allowing the Petroff with 1.e4 e5 2.Nf3.
What do you do if you don't want to play the Scotch Game anymore?
After 2.d4 your choices are very limited. So you might come back to 2.Nf3 anyway.