A topical line. White gains full compensation for the pawn, but Black can be quite satisfied with the opening outcome as he manages to trade a bunch of pawns on the queenside.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g2g3  3... d7d5  4. f1g2  4... d5c4  5. g1f3  5... f8b4  6. c1d2  6... a7a5 Topalov had used this line as a main anti-Catalan weapon in two WCC matches, against Kramnik and Anand. 7. a2a3  7... b4d2  8. b1d2  8... b7b5 