[Event "Mar del Plata International-23"]
[Site "Mar del Plata"]
[Date "1960.04.02"]
[Round "4"]
[White "Olafsson, Fridrik"]
[Black "Letelier Martner, Rene"]
[Result "0-1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nc6 6. Nxc6 dxc6 7. f4 e5 8. f5 Nf6 9. Qf3 h5 10. Nc3 Bc5 11. Bd2 Ng4 12. Nd1 Qh4+ 13. g3 Qe7 14. h3 Nf6 15. Ne3 Bd7 16. O-O-O O-O-O 17. Nc4 Bd4 18. Ba5 Rdg8 19. Be2 b5 20. Rxd4 exd4 21. Qf4 Ne8 22. Nb6+ Kb7 23. e5 Nc7 24. Bf3 Rd8 25. a3 g6 26. e6 Be8 27. Nd7 Rxd7 28. exd7 Qxd7 29. Rd1 gxf5 30. Qe5 f6 31. Qc5 Ne6 32. Qb6+ Kc8 33. Re1 Rh7 34. Qxa6+ Kb8 35. Bd2 Re7 36. a4 bxa4 37. Qb6+ Kc8 38. Bb4 Rg7 39. Be2 Qc7 40. Qa6+ Kd7 41. Bc4 Bf7 42. Bxe6+ Bxe6 43. Ba5 Qb8 44. Bb6 Rxg3 45. Bxd4 Bd5 46. Bxf6 Be4 47. Qc4 Qf4+ 48. Kb1 Qd2 49. Rc1 Rxh3 50. Qf7+ Kc8 51. Be5 Qd7 52. Qf8+ Qd8 53. Qb4 Qd5 54. Qe7 Qd7 55. Qb4 Qd5 56. Qf8+ Qd8 57. Qb4 Rb3 58. Qxa4 Rb5 59. Rg1 Rxe5 60. Rg8 Re8 61. Qa8+ Kd7 62. Qa7+ Ke6 63. Rg6+ Kd5 64. b4 Qe7 65. Qa2+ Kd4 66. Qb2+ Kc4 0-1