[Event "Interzonal-09b"]
[Site "Petropolis"]
[Date "1973.08.02"]
[Round "7"]
[White "Tan, Lian Ann"]
[Black "Ljubojevic, Ljubomir"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Bd7 5. c4 Nf6 6. Nc3 Nc6 7. Qd2 a6 8. b3 Rb8 9. a3 g6 10. b4 Bg7 11. Bb2 O-O 12. h3 Rc8 13. Bd3 Be6 14. Nd5 Nd7 15. Bxg7 Kxg7 16. O-O Nde5 17. Nxe5 Nxe5 18. Be2 f6 19. Rac1 g5 20. Rfd1 Qe8 21. Qd4 Rc6 22. Rc3 Rg8 23. Rdc1 Qd7 24. Bd1 Qd8 25. Ba4 Rc8 26. c5 dxc5 27. Rxc5 Rxc5 28. Rxc5 Qd6 29. Qc3 b6 30. Rc7 Bxd5 31. exd5 Rd8 32. Bc2 Rd7 33. Rxd7 Qxd7 34. Qd4 Qd6 35. h4 1/2-1/2