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rn1qk2r/pp3ppp/4pn2/2p2b2/PbBP1B2/1QN1P3/1P3PPP/R3K1NR w

Hi, I've been doing a big study on an opening, in this variation, I jsut get a bunch of computer lines from Stockfish which I don't really get/appreciate, could someone offer some insight??
How did this position arrive?
The white knight is not developed yet. It should have come out earlier. So the first move should be Nf3. Black plays Nc6 and threatens Na5. The white Qb3 and Bc4 are not well placed.

Thanks to @tpr for the visual aid.
This looks like a bad Nimzo or QGA. The main element I notice is the black's LSB is outside the pawn chain, which makes b7 weak. In similar positions, black has a knight supporting the Bb4. These two factors make my second thought to be dxc5. (The first thought is to finish development.) Without even looking past the Bd6 threat, I consider black's position to be much worse.
To sum up, just by intuition, black loses a pawn, gives up the bishop pair, or forfeits the right to castle. This position clearly favors white.

I guess this stems from the Slav
1 d4 d5 2 c4 c6 3 Nc3 Nf6 4 Bf4 dxc4 5 a4 Bf5 6 e3 e6 7 Bxc4 Bb4 8 Qb3!? c5

On 9 dxc5 Nc6 should be OK for black. The pawn loss is only temporarily just like 1 d4 d5 2 c4 dxc4. On 10 Bd6 black has 10 ...Ne4 when black can take the bishop's pair and still castle. On 10 Rd1 black has 10...Qa5.

Sorry, this arose from: 1 d4 d5 2 c4 c6 3 Bf4!? xc4 4 a4 Nf6 5 Nc3 Bf5 6 e3 e6 7 Bxc4 Bb4 8 Qb3!? c5.

I've done a lot of work on this pet-line, but some points need more human touches.

Here's the study: And yes, while xc5 looks nice, Nc6 is an accurate counter by Black.

I believe the 8 Qb3 is unsound. White can better develop the knight and castle. The queen enters play too soon and can be harassed by c5 and Nc6-a5.

Alright, thank you for your feedback. I found it often creates beneficial imbalances, but c5 is truly annoying. In similar positions, c5 has never been found, with a5, then Qe7, and Qb6 being the alternatives... Hopefully I can just find some way to spice things up here...