How to properly counter white bishop b4 as 3rd moove when playing black

My problem is that, if white takes my black knight, then I play b2 to c3 and I end up with two pawn one behind the other one and I think that is dirty. Another way would be Qf6 but I find it dirty as well.

I hope you will be able to help me!

Thank you for reading this!

Stockfish: Nf6

Leela: Nf6

I'd say it works

Don't worry about it, it's no big disadvantage, white gives up the bishop pair and your rook gets a half open b file, just continue to develope. 

Thank you for your answers!

So black: Nf6, white: Bxc6, black: dxc6

Okey thank you! But what about dxc6 instead of bxc6?

thats unprincipled because it capture away from centre. 

In theory, taking with the b-Pawn is better, for at least three reasons:

1) If you take with the d-Pawn instead, then after White arranges to play d2-d4 (perhaps a few moves from now) and the Pawns exchange in the center by (Black) exd4 (White) Nxd4, then you will be left with this sort of Pawn structure:

White has four Pawns vs three on the K-side, and can eventually create a passed Pawn there. But your four Pawns vs three on the Q-side are crippled, and cannot create a passed Pawn unless your opponent cooperates. That sort of Pawn endgame favors White.

2) Recapturing with the b-Pawn gives you an extra Pawn in the central area of the board. An extra central Pawn can be very useful.

3) An open b-file is more useful for attack than an open d-file. The open d-file is more useful for positional pressure, though.

So in theory, taking with the b-Pawn has advantages. In practice, both Pawn recaptures are about equally playable.

Berlin (3...Nf6)

@KetoOn1963 and @SamuelPlaysCheckers you're supposed to take with the d-pawn:

Taking with the b-Pawn is perfectly playable.

For example:

@blueemu but if black can't make use of development then black has a worse pawn structure.

After White loses his g2-Pawn? In what respect is Black's Pawn structure worse? Both players have three islands of Pawns. Both players have an isolated Rook's Pawn.

In fact, it is White who has the worse Pawn structure (after, for instance, 10. Nb4 Bxg2 because both Black's and White's Pawn weaknesses are on light squares, and Black still has the correct Bishop to cover them, while White is stuck with the wrong Bishop.

oh pffft my bad. 

Naturally, taking with the d-Pawn instead is also fully playable.

There is an old maxim that balanced positions lead again and again to balanced positions.

So you may be wondering, if black gives a free move to white and he executes his "threat" of Bxc6 and Nxe5, black even gets a good position, so why does white play Bb5 then if he can't win material? The answer is that white does threaten to win the pawn but not right away, and white is hoping that black will have to do something about the threat of Bxc6 and Nxe5 that will in some way concede something, or weaken something in black's position later. The main intention of Bb5 is to put pressure on e5 as much as possible in order to force black to either give up the e5-point with ..exd4, or as you my discover later in your search, force black to play a6 and b5 to neutralize the pin, in which case white has provoked black into weakening his pawn structure and he hopes to exploit this later, with something like a4 attacking b5 and so on.

Sorry about the text being so congested. I am not yet very familiar with editing this thing, but I'll get there. I do hope you get something good out of what I blabbered about though, and it helps you improve.

Your example has limited pedagogic value for exactly this reason.

Since you've given White a free move, people might get the impression that 4. ... dxc6 is better than recapturing with the b-Pawn, since 4. ... bxc6 5. Nxe5 Qe7 6. d4 d6 7. Nxc6 Qxe4+ 8. Qe2 Qxe2+ 9. Kxe2 Bb7 10. d5 wins a Pawn for White... but this conclusion is based on an impossibility (White got to make two moves in a row).

If you give Black a move, replying to 3. Bb5 with Nf6, then that whole line is impossible since Black's Knight covers the d5 square.