[Event "Olympiad-20 Preliminaries A"]
[Site "Skopje"]
[Date "1972.09.22"]
[Round "4"]
[White "Delgado, Simon"]
[Black "Hernandez Onna, Roman"]
[Result "0-1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. g3 Bb4 7. Bg2 d5 8. Nxc6 bxc6 9. O-O O-O 10. exd5 cxd5 11. Qd4 Be7 12. Bf4 Bb7 13. Rad1 Qa5 14. Be5 Rac8 15. Rfe1 Rfd8 16. Qd2 Ba8 17. Bd4 h6 18. h3 Rd7 19. a3 Ne8 20. Qe2 Bf6 21. Bxf6 Nxf6 22. Qe5 Qb6 23. b4 Qa6 24. Rd3 Rdc7 25. Red1 Bc6 26. a4 Qb6 27. Qf4 Be8 28. Qe5 Qxb4 29. Rb1 Qa5 30. Rb3 Nd7 31. Qd6 Rxc3 32. Rdxc3 Rxc3 33. Rxc3 Qxc3 34. Qe7 Qc8 35. Bf1 Nc5 36. Qxa7 Bxa4 37. Qa5 Bxc2 0-1