[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.10.07"]
[Round "11"]
[White "Ivkov, Borislav"]
[Black "Smejkal, Jan"]
[Result "1/2-1/2"]
[WhiteElo "2525"]
[BlackElo "2550"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 d5 5. Nbd2 Bd6 6. Bg2 Nge7 7. O-O O-O 8. Re1 Bc7 9. c3 d4 10. Nb3 Bb6 11. cxd4 cxd4 12. e5 Ng6 13. h4 Bc7 14. Bg5 Qe8 15. Rc1 h6 16. h5 Ngxe5 17. Nxe5 Bxe5 18. Bxh6 Bf6 19. Bd2 Qe7 20. Nc5 Rb8 21. b4 Nd8 22. h6 e5 23. Ne4 Bf5 24. f4 Ne6 25. Nxf6+ Qxf6 26. g4 Bxd3 27. f5 e4 28. hxg7 Nxg7 29. Bxe4 Bxe4 30. Rxe4 Rbe8 31. Qf3 Rxe4 32. Qxe4 Re8 33. Qxb7 d3 34. Qf3 Qd4+ 35. Kf1 f6 36. Bc3 d2 37. Rd1 Qc4+ 38. Kg1 Re4 39. Rxd2 Rxg4+ 40. Rg2 Rxg2+ 41. Kxg2 Qxa2+ 1/2-1/2