1. c2c4  1... c7c5  2. g1f3  2... b8c6  3. b1c3  3... g8f6  4. g2g3  4... d7d5  5. c4d5  5... f6d5  6. f1g2  6... d5c7  7. e1g1  7... g7g6  8. c3a4  8... c7e6  9. d2d3  9... c6d4  10. c1e3 "I am winning a pawn and this cannot be bad, right?"  (Duda) 10... f8g7  11. a1c1  11... e8g8 A novelty and the best move under the  circumstances. Xiong spotted non-obvious counterplay. 12. a4c5  12... d4f5  13. c5e6  13... c8e6  14. e3c5  14... g7b2  15. c1b1  15... b2g7  16. b1b7 "I decided to sacrifice the exchange."  (Duda) 16... d8c8  17. b7b5  17... a7a6  18. b5a5 Now the rook is stuck on a5 and in order to free it White needs to sacrifice some material.