I have no idea pls help
The Process of Decision Making in Chess Volume 2: Practice positions and solutions. Position 9.2
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White attains a lead in development and begins an attack on the kingside with an initiative. The isolated pawn for white is nothing to be afraid of, this position has been played in over 1000 games and white, for the most part, gains an advantage with the developed minor pieces. There is an important thing to note about the position, the position is a Semi-Tarrasch because of the developed knights for both sides this means after the exchanges white will have two pieces developed versus black's one. It is a common motif in the queen's gambit to have accelerated development. Whites bishop will move to a free diagonal facing the black king because of the exchanges, the black king will have to be careful in the position.
Address the challenge (black's move):
Diagram 9.2- this is another typical opening position that incorporates a strong motif of pawn weaknesses, the Tarrasch variation of the Queen’s Gambit. Black has a choice: he can maintain the tension in the center and keep developing, or initiate central pawn exchanges that will end up giving white the famous isolated queens pawn (…dxc, Bxc4 …cxd, and with or without piece exchanges on d4, eventually: exd4). Black’s idea would be to concentrate some fire power on that d4 pawn and try to blockade it, all in an attempt to create a game scenario where white is forced to defend.
Challenge: are there any benefits to white for playing this type of line that enables black to create this pawn structure weakness? What is the compensation for white’s positional weakness?