Pawns attacking bishop in Openings


Yes you lose time moving the bishop. But your opponent also loses time moving pawns to attack the bishop.

I think that in that case is good option to trade bishop for the knight and doubleling his pawns
Before making a decision based on one thing like doubled pawns. You need to weigh what both sides gain/lose from the exchange,

I see how White did not fall behind in development, however did white not lose space on the queen side? It seems that black controls more squares on the white side that white controls on the black side. What compensation dose white have for the loss of space?

I see how White did not fall behind in development, however did white not lose space on the queen side? It seems that black controls more squares on the white side that white controls on the black side. What compensation dose white have for the loss of space?
If you're referring to this position...
White has the lead in development.
Blacks a6-b5 pawns are on light squares which means his queenside dark squares are weak.
Whites "loss of space" can easily be countered with a move like a4. White lead in development, and blacks space advantage are dynamic advantages, which means they are temporary advantages.

I see how White did not fall behind in development, however did white not lose space on the queen side?
That’s quite true. However Black is not in a position to benefit from his extra queenside space, partly because his c6-knight is sitting in front of his own pawn. In some lines the knight goes back to b8(!) so as to make room for other pieces. That’s rather slow, allowing White to gain an upper hand in the center.