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  9... e5d4 Boldly accepting the sacrificed pawn, but we are still in both players' prep.