[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.10.25"]
[Round "1"]
[White "Tarjan, James Edward"]
[Black "Riego Prieto, Victorio"]
[Result "1-0"]
[WhiteElo "2510"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 Nc6 6. d5 Nb8 7. Nf3 c5 8. h3 Nbd7 9. Qc2 O-O 10. O-O a6 11. Rb1 Qc7 12. Be3 Ne8 13. b4 cxb4 14. Rxb4 Nc5 15. Nd4 Bd7 16. Rbb1 f5 17. f4 fxe4 18. Nb3 Bxc3 19. Qxc3 Na4 20. Qd2 Ng7 21. g4 Rf7 22. Bd4 e6 23. Rbc1 exd5 24. cxd5 Qd8 25. Kg2 Rc8 26. Kg3 Qe7 27. Rxc8+ Bxc8 28. Rc1 Bd7 29. Rc7 e3 30. Bxe3 h5 31. Rxb7 hxg4 32. Bxg4 Nf5+ 33. Bxf5 gxf5 34. Bd4 Rh7 35. Kh2 Qh4 36. Qe3 Re7 37. Qg3+ Qxg3+ 38. Kxg3 Kf7 39. Kh4 Kg6 40. Nd2 Rh7+ 41. Kg3 Bb5 42. Rb8 Nc5 43. Bxc5 dxc5 44. Nf3 Rg7 45. Ne5+ Kf6+ 46. Kf2 Rc7 47. Ke3 c4 48. Rb6+ Kg7 49. d6 Rc5 50. d7 Rd5 51. Rb8 Bxd7 52. Rb7 Kf6 53. Rxd7 Ra5 54. Nxc4 Rxa2 55. Rd6+ Ke7 56. Rd2 Ra1 57. Rd5 Ke6 58. Re5+ Kf6 59. Ra5 Rh1 60. Rxa6+ 1-0