[Event "Olympiad-18 Preliminaries A"]
[Site "Lugano"]
[Date "1968.10.21"]
[Round "4"]
[White "Delgado, Simon"]
[Black "Naranja, Renato"]
[Result "0-1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 e5 6. d5 O-O 7. Nge2 Nbd7 8. Ng3 Nc5 9. Bc2 a5 10. O-O c6 11. Bg5 h6 12. Be3 cxd5 13. cxd5 b6 14. f3 Ba6 15. Rf2 Nfd7 16. Qd2 Kh7 17. Re1 Qc7 18. f4 exf4 19. Rxf4 Ne5 20. Rh4 Nc4 21. Qc1 Nxe3 22. Qxe3 Rae8 23. Nge2 Qe7 24. Qf2 Bd3 25. Ba4 b5 26. Bxb5 Bxb5 27. Nxb5 Nd3 28. Qg3 Nxe1 29. Qxe1 g5 30. Rh3 Qxe4 31. Kh1 Be5 32. Qd2 Kg7 33. Nbc3 Qg4 34. Rf3 f5 35. h3 Qh4 36. Rf2 Qc4 37. Rf3 a4 38. Qd3 Rc8 39. Kg1 Qxd3 40. Rxd3 Rc4 41. Kf2 Rb8 42. Nd1 Kg6 43. Nec3 f4 44. Kf3 h5 45. a3 Bxc3 46. bxc3 Rb3 47. Ke2 Rxa3 48. Kd2 Rc5 49. Rd4 Ra2+ 50. Kd3 Rxg2 51. h4 a3 0-1