Radjabov decided to stick to the pawn.
1. c2c4  1... g8f6  2. b1c3  2... e7e6  3. e2e4  3... c7c5  4. e4e5  4... f6g8  5. g1f3  5... b8c6  6. d2d4  6... c5d4  7. f3d4 A  famous pawn sacrifice in the Flohr-Mikenas system. For the pawn White  collects the bishop pair and has the lead in the development. 7... c6e5  8. d4b5  8... a7a6  9. b5d6  9... f8d6  10. d1d6  10... f7f6  11. c1e3  11... g8e7  12. e3b6  12... e7f5  13. d6b4  13... e5c6  14. b4c5  14... d8e7  15. e1c1 