Four Knights Opening

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Position 1-
Engine recommends Bd6 for black here.
I don't understand  because Bc5 looks better for the Bishop to get the diagonal for more scope. B*c6 b*c6 N*e5 is not possible because of Qd4 threatening Q*f2.  
 
Here Black has the two Bishop advantage, Open d file for his Queen and open Diagonals for Bishop. But major disadvantage is B*Nc6 leaves black with isolated double pawn at c file. 
 
 Still I am not sure about Bd6 and advantage in this position for Black. 








Position 2-


In both the positions engines say Black is better. I want to know how and why.
Can someone please explain the position and ideas, traps, weakesses for  both Black and White ? 
stfudonny

In the first line I usually play 7...Ne7.  My opponent shouldn't have the benefit of an engine in a non-correspondence game (and only correspondence on servers other than chess.com, such as ficgs and/or icc), and it sets two traps:
 



stfudonny
pfren wrote:

Bologan in his recent book suggests as Black's best the interesting move 6.Bd3 Nb4!? but I won't plagiarize his work here...

I always knew it was a possibility on move 7, so I'll have a look at it on move 6 now.

Robert_New_Alekhine

You are wrong; white can safely take the pawn after Bc5 due to Qe2! at the end of the line.

gnikoor

this is a fun opening for blitz chess.

stfudonny
Robert0905 wrote:

You are wrong; white can safely take the pawn after Bc5 due to Qe2! at the end of the line.

Who is wrong?  Which line?