Boldly accepting the sacrificed pawn, but we are still in both players' prep.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. e2e3  4... e8g8  5. g1f3  5... b4c3  6. b2c3  6... d7d6  7. f1d3  7... e6e5 So employs a rare system, which was played against him by Aronian this year in a blitz game. 8. e3e4  8... f8e8  9. e1g1 