[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.10.14"]
[Round "16"]
[White "Portisch, Lajos"]
[Black "Velimirovic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2640"]
[BlackElo "2515"]

1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 cxd4 5. Qa4+ Bd7 6. Qxd4 exd5 7. Qxd5 Nc6 8. Nf3 Nf6 9. Qd1 Bc5 10. e3 Qe7 11. Be2 g5 12. O-O O-O-O 13. b4 Bxb4 14. Qb3 g4 15. Nd4 Nxd4 16. exd4 Be6 17. Qb2 Nd5 18. Nb5 Kb8 19. Bc4 Ba5 20. Bd2 Bxd2 21. Qxd2 Qf6 22. Qa5 a6 23. Bxd5 Bxd5 24. Qc7+ Ka8 25. a4 Rc8 26. Qg3 Bc4 27. Rfd1 Qb6 28. Nd6 Rc6 29. Rab1 Qc7 30. Nxb7 Qxg3 31. hxg3 Bd5 32. Nc5 h5 33. Re1 Rb8 34. Rbd1 Rd8 35. Re5 Rcd6 36. Rb1 Be6 37. Kh2 Rb8 38. Rxb8+ Kxb8 39. Rxh5 Bc8 40. Rh8 Kc7 41. Rh7 Rxd4 42. Rxf7+ Kb6 43. Rf8 Kc7 44. Rf4 Rxf4 45. gxf4 Kb6 46. Nb3 Bd7 47. a5+ Kb5 48. f5 Bxf5 49. Nd4+ Kxa5 50. Nxf5 Kb4 51. Ne3 a5 52. f4 gxf3 53. g4 Kc3 54. g5 Kd4 55. Ng4 Kd5 56. Kg3 Ke6 57. Ne3 1-0