[Event "Interzonal-11a"]
[Site "Riga"]
[Date "1979.09.10"]
[Round "5"]
[White "Trois, Francisco R Torres"]
[Black "Tarjan, James Edward"]
[Result "1/2-1/2"]
[WhiteElo "2415"]
[BlackElo "2525"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qa4 Ne4 6. Bg2 Nd6 7. Nfd2 c6 8. Qc2 Nf5 9. Nf3 d5 10. cxd5 cxd5 11. Nc3 Be7 12. O-O O-O 13. Rd1 Bb7 14. b3 Nc6 15. Bb2 Rc8 16. Rac1 a6 17. e3 b5 18. Qb1 g6 19. Ne2 Qa5 20. Nf4 Nb8 21. Ne5 Nd6 22. h4 Rxc1 23. Rxc1 Rc8 24. Rxc8+ Bxc8 25. a3 Qc7 26. Qc1 Qxc1+ 27. Bxc1 Nb7 28. Nf3 Na5 29. Nd2 Kf8 30. Bf1 Nd7 31. Bd3 Bd6 32. Bc2 Bb7 33. Bb2 Ke7 34. Nd3 Nc6 35. f4 h5 36. Kf1 a5 37. Ne5 b4 38. Nxc6+ Bxc6 39. a4 Nf6 40. Bd3 Kd7 41. Kg2 Ng4 42. Kf3 Kc7 43. Ke2 Nf6 44. Bc1 Bb7 45. Kf2 Kb6 46. Kf3 Ba6 47. Bxa6 Kxa6 48. Bb2 Kb7 49. Ba1 Kc6 50. Bb2 Kd7 51. Bc1 Ke7 52. Bb2 Bc7 53. Ba1 Ng4 54. Ke2 Kf6 55. Bb2 Kf5 56. Kf3 Nf6 57. Bc1 Ne4 58. Nxe4 dxe4+ 59. Kg2 Kg4 60. Bd2 Bd8 61. Be1 f6 62. Bf2 Be7 63. Be1 g5 64. hxg5 fxg5 65. fxg5 Bxg5 66. Bf2 Bh6 67. Bg1 Bf8 68. Bf2 Be7 69. Be1 Bg5 70. Bf2 h4 71. gxh4 Bxh4 72. Bxh4 Kxh4 73. Kh2 1/2-1/2