1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. f3 f5 11. Be3 f4 12. Bf2 g5 13. Rc1 Ng6 14. Nd3 Nf6 15. c5 Rf7 16. cxd6 cxd6

This line with Nd3 is good for Black according to Nunn & Burgess in The New Classical King's Indian.

17. Qb3 g4 18. Rc2

Now comes the thematic breakthrough.

18... g3! 19. hxg3 fxg3 20. Bxg3 Nh5 21. Bf2 Qg5 22. Rd1 Ngf4 23. Nxf4 Nxf4 24. Bf1 Nh3+ 25. Kh1 Nxf2+ 26. Rxf2 Qh6+ 27. Kg1 Bf6 28. g3 Bg5 29. Rh2 Qf8 30. Rd3

Defeatist but

30. Rf2 Be3

30. Be2 or or Bg2 30... Rxf3 31. Bxf3 Qxf3 with a very strong attack for Black.

30... Rxf3 31. Rxf3 Qxf3 32. Nd1 Qxe4 33. Nf2 Be3 34. Bd3 Qf3 35. Bxh7+ Kf8 36. Qc2 Bg4 37. Be4 Qxg3+ 38. Rg2 Qf4 0-1