Black wins.
Doubled Pawns
However, there are situations where having a double pawn could be advantageous. For example, there might be a situation where you create an open file for you rook by creating a double pawn structure.
Examples.
1. You have a doubled pawns but you get the an open a file
2. You pawns are doubed but they are in the center you control more central squares but the f pawns are weak because they can't defend
You are right. In fact, in many openings for instance the Bf5 slav(d4 d5 c4 c6 nf3 nf6 nc3 dxc4 a4 Bf5 are mainly based on the fact that after white plays Nh4(to get the two bishops), black retreats the Bishop to g6, and than recaptures with the h pawn, after the knight takes. The doubled pawns are actually compensation for white"s two bishops!
My chess coach said that its a bad thing if your pawns are doubled like this.
He says that if they are doubled like that, they are weaker and it gives him an "extra turn".
I dont understand this really and I havent had the time to ask him.
Can someone help me out here?