[Event "Olympiad-15 Preliminaries B"]
[Site "Varna"]
[Date "1962.09.23"]
[Round "8"]
[White "Purevzhav, S"]
[Black "Rivera, D"]
[Result "1-0"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. Bf4 d5 6. Rc1 c6 7. e3 Qa5 8. Be2 Ne4 9. a3 c5 10. O-O Nxc3 11. Rxc3 dxc4 12. Rxc4 cxd4 13. exd4 Nc6 14. Rc5 Qb6 15. b4 Bg4 16. Rb5 Qd8 17. d5 Bxf3 18. Bxf3 Nd4 19. Rxb7 a5 20. b5 Rc8 21. Be3 Nc2 22. Bb6 Qd6 23. Bxa5 Qxa3 24. Bc7 Qc5 25. d6 Nd4 26. dxe7 Qxe7 27. b6 Qc5 28. g3 Ra8 29. Bg2 Ra2 30. Qd3 Re8 31. Bf4 Ra3 32. Qd2 Rb3 33. Qa2 Qb5 34. Be3 Ne2+ 35. Kh1 Nc3 36. Qa1 Ne4 37. Qd1 Rd3 38. Qb1 Rb3 39. Qd1 Rd3 40. Qb1 Rb3 41. Qa2 Nc3 42. Qa1 Rd8 43. Ra7 Rb1 44. Rxb1 Nxb1 45. Qa4 Qe2 46. h4 Nc3 47. Ra8 Rf8 48. Rxf8+ Bxf8 49. Qe8 Qd1+ 50. Kh2 Kg7 51. Qe5+ f6 52. Qxc3 Bd6 53. Qd2 Qxd2 54. Bxd2 1-0