1.e4 d5 2.d4 dxe4 3.Nc3 e5 4.Nge2 Nc6 5.d5 Nce7 6.Ng3 Nf6 7.Bc4 Bg4 8.f3 exf3 9.gxf3 Bh3 10.Bg5 Qd6 11.Qe2 a6 12.0-0-0 Ng6 13.Kb1 h6 14.Nge4 Nxe4 15.Nxe4 Qd7 16.Be3 Bf5 17.h4 Bxe4 18.fxe4 h5 19.Qf2 Bd6 20.Rhg1

Knock, knock, is anybody at home?

1.e4 d5 2.d4 dxe4 3.Nc3 e5 4.Nge2 Nc6 5.d5 Nce7 6.Ng3 Nf6 7.Bc4 Bg4 8.f3 exf3 9.gxf3 Bh3 10.Bg5 Qd6 11.Qe2 a6 12.0-0-0 Ng6 13.Kb1 h6 14.Nge4 Nxe4 15.Nxe4 Qd7 16.Be3 Bf5 17.h4 Bxe4 18.fxe4 h5 19.Qf2
 
White queen aims for a7 in case of 0-0-0 (as e.g. after 19..0-0-0? 20.Bg5!? f6 21.Qa7+-) and it is also an important preparing move for a plan with c2-c4-c5 pawn advance which is going to be of fatal consequences for black.

17...Bxe4 18.fxe4 h5

So here is my forecast for this game : Having closed the lines at the cost of the pair of Bs, the black king is now safe in the centre while keeping the possibility of finding a shelter on the queenside. 
White has clearly enough compensations for the pawn and the game will end up in a opposite colour bishop draw when Black exchanges his knight on f4 against the Be3.

Patrik, it is up to you to make me a liar

But what about the second game ? Should I consider the conclusion of your analysis as a start ? 
 

I agree that 1.e4 d5 2.d4 dxe4 3.Nc3 e5 4.Nge2 Bb4 5.Bd2  exd4 6.Nxe4 Bxd2+! 7.Qxd2 Nc6 8.0–0–0 Nf6 is equality. 

But in the variation 5.dxe5 Qxd1+ 6.Kxd1 Nc6, the alternative of 7.Nb5 is 7.Bf4 and is maybe the best move. Here is possibly the main variation : 7.Bf4 Bf5 8.Ng3 O-O-O+ 9.Kc1 Bxc3 10.bxc3 Bg6 11.Bb5 with the idea Re1 is about equal but white queenside is ugly.

I have to say that I feel more confortable with the 5.Bd2 than 5.dxe5

5.Be3 seems equaly playable.

In general it seems to me that the Leumberger counter gambit after 4.Nge2, white have easy equality. But if Black are happy countering BDG with equality, maybe this is a good choice.

And here is my commentary:

14.Be3?! 0-0-0! 15.Nge4 Nxe4 16.Nxe4 Qb4! and now I haven´t been able to find any substantial advantage:

a)      17.c3 Qa4 18.b3 Qa3 19.Qc2 Qe7!?
b)      17.Bd2 Qb6! (18.Be3?! Qb4= is only repetition)
c)      17.a3 Qa5! 18.d6 Bxd6 19.Bxf7 Nf4 20.Bxf4 exf4 21.Nxd6 is about =

   There is one important difference between 14.Be3 and 14.Nge4. Compare position A (14.Be3 0-0-0 15.Nge4 Nxe4 16.Nxe4 Qb4) with position B (14.Nge4 Nxe4 15.Nxe4 Qd7 16.Be3). In A, black queen seems to be vulnerable at first sight but on the other hand, she is actively placed and most importantly, she is defending queenside. On the other hand, in position B, black perhaps can´t castle queenside because of Bxa6!? threat. Queen is not defending against this threat unlike when she is on b4. In position B also d6!? comes into question still, because queen is pinned in a way. It seems to me that in position B white´s pieces are ideally placed, black king is still in the centre, Bh3 bishop looks weird and I think that perhaps the biggest problem for black will be his „out-of-play“ Rh8 rook (and there are some surprises waiting for black in case of normal Bf8 development followed by 0-0; h6 is weak and one must be very careful to not be crushed after Bxh6, of course with Rhg1 played already).

13.Kb1 h6

13...Be7? 14.Nge4 Nxe4 15.Nxe4 Qd7 (No Bxg5 check! Very prophylactic 13.Kb1, indeed  ) 16.Bxe7 Qxe7 17.d6 Qh4 18.d7+! with the idea Bxd7 19.Bxf7+

So the only thing Black needs yet, is a reliable variation to play for an advantage - like 3...Nf6 4.f3 c6 5.Bc4 exf3.

12.0-0-0 Ng6.

After you send your ED 5th move, I will have to decide on the EP continuation. 5th move is quite important in the game, although not as much as the 4th