[Event "Mar del Plata International-22"]
[Site "Mar del Plata"]
[Date "1959.04.02"]
[Round "9"]
[White "Ivkov, Borislav"]
[Black "Letelier Martner, Rene"]
[Result "1-0"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 Nbd7 7. Qc2 Nf8 8. Bd3 g6 9. Nge2 Ne6 10. Bh4 O-O 11. h3 c6 12. O-O-O b5 13. g4 a5 14. Nf4 Nxf4 15. exf4 a4 16. Rhe1 Ra7 17. Kb1 Ne8 18. Rxe7 Rxe7 19. Bxe7 Qxe7 20. Nxd5 cxd5 21. Qxc8 Nc7 22. Qb7 a3 23. bxa3 Ra8 24. Bc2 Rxa3 25. Bb3 b4 26. Rc1 Qe4+ 27. Rc2 Ne6 28. Qb8+ Kg7 29. Qe5+ Qxe5 30. dxe5 Nxf4 31. Rc7 Ra5 32. Rb7 g5 33. Rxb4 Nxh3 34. f3 Nf4 35. Rb7 Rc5 36. a4 Rc6 37. a5 Ra6 38. Rb5 d4 39. Kc2 Kf8 40. Kd2 Kg7 41. Bc4 Ra7 42. e6 fxe6 43. a6 Kf6 44. Rb7 Ra8 45. a7 Ng6 46. Bd3 Ne7 47. Be4 Nd5 48. Rxh7 Ke5 49. Rg7 Kd6 50. Kd3 Kc5 51. Bxd5 exd5 52. Rf7 Re8 53. Re7 Rf8 54. Rc7+ Kd6 55. Rf7 Rc8 56. Rf6+ Kc5 57. Ra6 Ra8 58. Ra1 1-0