[Event "Interzonal-09a"]
[Site "Leningrad"]
[Date "1973.06.23"]
[Round "15"]
[White "Tukmakov, Vladimir B"]
[Black "Estevez Morales, Guillermo"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 Nxd4 7. Qxd4 d6 8. Bg5 Bg7 9. Be2 O-O 10. Qd2 Be6 11. Rc1 Qa5 12. f3 Rfc8 13. Nd5 Qd8 14. Nxf6+ exf6 15. Be3 f5 16. exf5 Bxf5 17. O-O Qe7 18. Bf2 Re8 19. Rce1 Qf6 20. Bd3 Bxd3 21. Qxd3 Qxb2 22. Rb1 Qxa2 23. Rxb7 Re2 24. Qd5 Rf8 25. Rxa7 Qc2 26. Ra8 Rd2 27. Rxf8+ Bxf8 28. Qe4 Qa2 29. g4 Rc2 30. Bg3 Rxc4 31. Qd3 Rc2 32. Rd1 h6 33. Kh1 Rc6 34. Rd2 Qa5 35. Kg2 Rc3 36. Qd4 Rc4 37. Qd3 Rc3 38. Qd4 Qa3 39. Bxd6 Bxd6 40. Qxd6 Rxf3 41. Qxa3 Rxa3 42. Rd6 Kg7 43. Rb6 Ra5 44. Kg3 h5 45. h3 Ra3+ 46. Kg2 h4 47. Rb7 Re3 48. Ra7 Rg3+ 49. Kh2 Kf6 50. Ra6+ Kg5 51. Ra5+ Kh6 52. Ra7 Kg7 53. Rb7 Re3 54. Kg2 Re2+ 55. Kg1 Rd2 56. Ra7 Kf6 57. Rb7 Ke6 58. Ra7 f6 59. Rg7 g5 60. Ra7 Ke5 61. Ra4 Re2 62. Kf1 Re3 63. Kg2 Rg3+ 64. Kh2 Rc3 65. Kg2 Rc2+ 66. Kg1 Kd5 67. Kf1 Rc3 68. Kg2 Rc4 69. Ra6 Ke5 70. Ra5+ Ke4 71. Ra6 Rc2+ 72. Kg1 Rc3 73. Kg2 1/2-1/2