[Event "Olympiad-15 Preliminaries B"]
[Site "Varna"]
[Date "1962.09.19"]
[Round "4"]
[White "Rivera, D"]
[Black "Aloni, Izak"]
[Result "0-1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. dxe5 Nc6 6. Bb5 e6 7. O-O Bd7 8. Qe2 a6 9. Bd3 Bc5 10. c3 h6 11. b4 Ba7 12. a3 f5 13. c4 Nde7 14. c5 Nd5 15. Bc4 Nce7 16. Nd4 O-O 17. Rd1 c6 18. Nb3 Ng6 19. Bxd5 cxd5 20. Nd4 Qh4 21. g3 Qe4 22. f4 Qxe2 23. Nxe2 a5 24. Kg2 b6 25. Be3 bxc5 26. Bxc5 Bxc5 27. bxc5 Rfc8 28. Rc1 Rab8 29. Nd4 Rb2+ 30. Kg1 Ne7 31. Nc3 Rxc5 32. Nd1 Rxc1 33. Rxc1 Rb7 34. Kf2 Kf7 35. Rc5 a4 36. Ne3 Nc8 37. Ke1 Ke7 38. Kd1 Na7 39. Kc2 Nb5 40. Nxb5 Bxb5 41. Kd2 Bd7 42. Nc2 Rb1 43. Ne1 g5 44. Rc1 Rb3 45. Rc3 Rb6 46. h3 Rb1 47. fxg5 hxg5 48. Nf3 g4 49. hxg4 fxg4 50. Nd4 Rg1 51. Rd3 Be8 52. Ke2 Rg2+ 53. Kf1 Rb2 54. Ke1 Rh2 55. Rc3 Rh5 56. Re3 Bg6 57. Kd2 Kd7 58. Ne2 Be4 59. Nf4 Rxe5 60. Nd3 Rf5 61. Nc5+ Kd6 62. Nxe4+ dxe4 63. Rxe4 Rf3 64. Rxg4 Rxa3 65. Rg8 Ke5 66. Ke2 Rb3 67. g4 a3 68. Ra8 Rh3 69. Kf2 Kf4 70. Ra4+ Kg5 71. Ra6 Kxg4 72. Kg2 Rb3 73. Rxe6 Rb2+ 0-1