Suddenly, the center is overcrowded.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g2g3  3... d7d5  4. g1f3  4... f8e7  5. f1g2  5... e8g8  6. e1g1  6... d5c4  7. d1c2  7... a7a6  8. a2a4  8... c7c5  9. d4c5  9... e7c5  10. c2c4  10... b7b6  11. f3e5  11... a8a7  12. e5d3  12... c5e7  13. c1f4  13... c8b7  14. g2b7  14... a7b7  15. b1d2  15... b6b5  16. a4b5  16... a6b5  17. c4c2  17... f6d5  18. f1c1 A novelty. Apparently, the  Chinese squad was happy with a slight edge against the Americans, with  risk-free play. 18... b8d7  19. d2b3 Heading to a5 and ideally to c6. 19... d5f4  20. d3f4 It seems as Black should not worry too much. But this feeling is  deceptive. The pressure along the open files makes Black's task difficult  and he has to proceed with care. 20... e7d6 Very accurate. 21. c2e4 A good reply in return. The forcing continuations did not promise Ni the edge. 21... b7b6 Another accurate decision. 22. f4d3  22... d7f6  23. e4d4 Keeping the queen in the center. 23... f6d5  24. a1a7 A step in the wrong direction. 24... d6e7  25. b3c5  25... b6c6  26. c5d7 The logical follow up once that the rook seized the seventh rank. But, the wrong direction. 26... c6c1 Now Lenderman skilfully regroups. 27. d3c1  27... d8c8  28. c1d3  28... f8d8  29. d7e5 The final step into the abyss.