[Event "Interzonal-09b"]
[Site "Petropolis"]
[Date "1973.07.26"]
[Round "3"]
[White "Biyiasas, Peter"]
[Black "Ljubojevic, Ljubomir"]
[Result "0-1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 Qa5 7. Ne2 Nd4 8. O-O Ne7 9. Nc1 d6 10. Qd2 Bd7 11. Nb3 Qb6 12. Rae1 h5 13. h3 a5 14. Nd1 Qb4 15. Na1 Qxd2 16. Bxd2 a4 17. c3 Ndc6 18. f4 Nc8 19. Nc2 b5 20. a3 Rb8 21. Nf2 b4 22. cxb4 cxb4 23. Nxb4 Nxb4 24. Bxb4 Bxb2 25. Re2 Bd4 26. e5 d5 27. Rc1 Rxb4 28. axb4 Na7 29. Rc7 Nb5 30. Rb7 Ke7 31. Ra2 Nc3 32. Ra3 Ra8 33. Kf1 Kd8 34. Bf3 Kc8 35. Rxd7 Kxd7 36. Nd1 Nb1 37. Ra2 Kc6 38. Nb2 Kb5 39. Nc4 Kxb4 40. Nd6 a3 0-1