[Event "Vidmar Memorial-02"]
[Site "Ljubljana/Portoroz"]
[Date "1973.04.08"]
[Round "5"]
[White "Ivkov, Borislav"]
[Black "Tatai, Stefano"]
[Result "1/2-1/2"]

1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Nd2 a5 10. Rb1 Ne8 11. a3 f5 12. b4 axb4 13. axb4 Nf6 14. f3 f4 15. c5 g5 16. Nc4 Ng6 17. Bd2 h5 18. cxd6 cxd6 19. Nb5 Ne8 20. Ra1 Rxa1 21. Qxa1 g4 22. Qa8 gxf3 23. Bxf3 Nc7 24. Nxc7 Qxc7 25. Re1 b5 26. Qa5 Qe7 27. Qxb5 Bg4 28. Qb6 Bxf3 29. gxf3 Nh4 30. Qf2 Rf6 31. Kh1 Rg6 32. Rg1 Rxg1+ 33. Kxg1 Bf6 34. Na5 Qd7 35. Qf1 Qa7+ 36. Kh1 Qd4 37. Be1 Qd1 38. Qg1+ Kf7 39. Bxh4 Qxf3+ 40. Qg2 1/2-1/2