[Event "Vidmar Memorial-02"]
[Site "Ljubljana/Portoroz"]
[Date "1973.04.08"]
[Round "5"]
[White "Radulov, Ivan"]
[Black "Osterman, Rudolf"]
[Result "1-0"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. dxc3 d6 5. Nf3 dxe5 6. Qxd8+ Kxd8 7. Nxe5 Ke8 8. Bc4 e6 9. Be3 Nd7 10. Nd3 Bd6 11. O-O-O b6 12. Rhe1 h5 13. Bd4 Kf8 14. f4 Bb7 15. Rd2 Nf6 16. Ne5 Bd5 17. Ba6 Re8 18. a4 h4 19. b4 Ba8 20. Kb2 Rh6 21. Kb3 Nd5 22. g3 hxg3 23. hxg3 Rd8 24. Nc4 Be7 25. Bf2 c5 26. Ne5 f6 27. Ng4 Rg6 28. Ne3 Nc7 29. Rxd8+ Bxd8 30. Bc4 f5 31. Rd1 Ke8 32. Re1 Kd7 33. Bd3 Rf6 34. Nc4 Be7 35. Ne5+ Kc8 36. g4 Bd6 37. Bh4 Rf8 38. Ng6 Rf7 39. gxf5 exf5 40. Bc4 Rd7 41. Ne5 Be7 42. Nxd7 Bxh4 43. Rd1 Bf3 44. Rf1 Be4 45. Ne5 Nd5 46. Bd3 Bg3 47. Ng6 Kc7 48. Rg1 Bf2 49. Rg5 Kd6 50. Ne5 Nxf4 51. Nc4+ Ke6 52. Rxg7 cxb4 53. cxb4 Nxd3 54. cxd3 Bxd3 55. b5 f4 56. Rxa7 Bd4 57. Nd2 Be2 58. Ra8 f3 59. Re8+ Kd5 60. Kc2 Bc5 61. Ne4 Kd4 62. Nxc5 Kxc5 63. Kd2 Bc4 64. Ke3 Bd5 65. Re5 Kc4 66. Rf5 Bb7 67. Rf6 Kc5 68. Kd3 Ba8 69. Kc3 Be4 70. Rh6 Bb7 71. Rg6 Be4 72. Rf6 Bb7 73. Rf5+ Kd6 74. Kd4 Ke6 75. Re5+ Kd6 76. Rh5 Kd7 77. Rh7+ 1-0