[Event "Interzonal-09b"]
[Site "Petropolis"]
[Date "1973.07.28"]
[Round "4"]
[White "Mecking, Henrique"]
[Black "Tan, Lian Ann"]
[Result "1-0"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. d3 exd3 10. exd3 d6 11. Rb1 h6 12. Ne4 Nxe4 13. Bxe4 Ne5 14. f4 Nxc4 15. f5 d5 16. Bg2 Ne3 17. Bxe3 Rxe3 18. f6 g6 19. Qd2 Re6 20. Qxh6 Rxf6 21. Rxf6 Qxf6 22. Bxd5 Bf5 23. Rxb7 Rd8 24. Bc4 Qxc3 25. Bxf7+ Kxf7 26. Rxc7+ Qxc7 27. Qh7+ Ke6 28. Qxc7 Rxd3 29. Qxa7 Rd1+ 30. Kf2 Rd2+ 31. Kf3 Rd3+ 32. Kf4 Kf6 33. Qa6+ 1-0