[Event "Interzonal-09a"]
[Site "Leningrad"]
[Date "1973.06.19"]
[Round "12"]
[White "Smejkal, Jan"]
[Black "Huebner, Robert"]
[Result "0-1"]

1. c4 Nf6 2. Nf3 g6 3. d4 Bg7 4. g3 O-O 5. Bg2 c5 6. O-O Nc6 7. Nc3 d6 8. d5 Na5 9. Nd2 e5 10. e4 Ne8 11. b3 a6 12. Bb2 Rb8 13. Qc2 f5 14. exf5 gxf5 15. Rae1 b5 16. Nd1 Rb7 17. f4 e4 18. Bxg7 Rxg7 19. Qc3 h5 20. Ne3 b4 21. Qa1 Nb7 22. Rf2 a5 23. Ndf1 Bd7 24. Bh3 a4 25. bxa4 Na5 26. Rc1 Rg6 27. Kh1 Qf6 28. Qxf6 Rgxf6 29. Ng2 Nc7 30. Rb2 Na8 31. Nd2 Nb6 32. Ne3 Nxa4 33. Rbc2 R6f7 34. Nb3 Ra8 35. Nd1 Nb6 36. Ne3 Kg7 37. Bf1 Kg6 38. Be2 Be8 39. Re1 Rfa7 40. Nc1 Nb7 41. Kg2 Ra3 42. Kf2 Na4 43. Nd1 Nc3 44. Nxc3 bxc3 45. h3 Ba4 46. Nb3 Na5 47. g4 Bxb3 48. axb3 Nxb3 49. gxh5+ Kh7 50. Rxc3 Nd4 51. Rxa3 Rxa3 52. Bd1 Rc3 0-1