This has been  seen already and it is once again Dubov who demonstrates excellent  preparation as he uncorks a novelty.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... f8e7  5. c1g5  5... h7h6  6. g5h4  6... e8g8  7. d1c2  7... c7c5  8. d4c5  8... d5c4  9. e2e3  9... b8a6  10. f1c4  10... a6c5  11. e1g1  11... a7a6  12. f1d1 