[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.10.12"]
[Round "15"]
[White "Ivkov, Borislav"]
[Black "Garcia Gonzales, Guillermo"]
[Result "1/2-1/2"]
[WhiteElo "2525"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 g6 4. d4 Bg7 5. d5 d6 6. e4 O-O 7. h3 Re8 8. Bd3 e6 9. O-O exd5 10. exd5 a6 11. a4 b6 12. Bf4 Ra7 13. Qd2 Rae7 14. Bh2 Bf8 15. Rab1 Rb7 16. b4 Nbd7 17. Rb3 Ne5 18. Be2 Nxf3+ 19. Bxf3 Nd7 20. Ne4 Ne5 21. bxc5 Nxf3+ 22. gxf3 dxc5 23. Re1 Bg7 24. Rbe3 Rf8 25. Nd6 Bh6 26. Nxb7 Bxb7 27. f4 Bc8 28. Qe2 Bd7 29. Re7 Bg7 30. f5 Bf6 31. d6 Bxf5 32. Re8 Qd7 33. Rxf8+ Kxf8 34. Be5 Bd8 35. Qe3 f6 36. Bg3 a5 37. Qh6+ Kg8 38. h4 Be6 39. Qe3 Bf7 40. Qf3 Bxc4 41. h5 gxh5 42. Qxh5 Bf7 43. Qf3 Kg7 44. Bf4 Bg6 45. Kh2 Bf5 46. Qd5 Bg6 47. Re3 Bf7 48. Rg3+ Bg6 49. Rh3 Bf7 50. Rg3+ Bg6 51. Rh3 Bf7 52. Bh6+ Kh8 53. Qe4 Qxd6+ 54. Bf4 Bg6 55. Bxd6 Bxe4 56. Re3 Bg6 57. f4 Kg7 58. f5 Bh5 59. Kg3 Kf7 60. Re1 c4 61. Kf4 1/2-1/2