in your variation 4...Bc5 5.Nxc6, instead of taking with a pawn, if you wanted to avoid a trade of queens, you can play 5...Qf6, when white must answer your threat on f2, which gives you time to capture the knight however you want.
For example, after white plays 6.Qd2 against 5...Qf6, you can avoid a doubling of your pawns by Qxf6, or you can seek of ways of activating your light sqaured bishop by dxc6.
Hi,
I faced the following moves in a game when I was playing as black. However I had no much clues on how to proceed. I analyzed the game and added some variations as well. I would like to discuss this game.