White has long-term compensation for the sacrificed pawn. The c5-pawn is weak and will hardly escape a capture, while Black's structure makes his main asset, the bishop pair, not so useful at the moment.
1. e2e4  1... c7c5  2. g1f3  2... b8c6  3. f1b5  3... e7e6  4. b5c6  4... b7c6  5. b2b3  5... d7d6  6. e4e5  6... d6e5  7. d2d3 [%c_effect d3;square;d3;type;GreatFind;persistent;true] Carlsen strikes with a prepared novelty. Previously White captured automatically on e5. The move played in the game is a new plan, but it's also the computer's first choice, so probably Abasov knew about it. 7... f7f6 