[Event "Interzonal-04"]
[Site "Portoroz"]
[Date "1958.08.30"]
[Round "15"]
[White "Olafsson, Fridrik"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nc3 c6 3. d4 d5 4. e3 g6 5. Nf3 Bg7 6. Be2 O-O 7. O-O Bg4 8. cxd5 Nxd5 9. Qb3 Nb6 10. Rd1 N8d7 11. a4 Be6 12. Qc2 Nd5 13. a5 Nc7 14. h3 f5 15. Ng5 Bd5 16. Nxd5 cxd5 17. Nf3 e6 18. Bd2 Rf7 19. Rdc1 Ne8 20. a6 b6 21. Ra3 Bf8 22. Rc3 Qf6 23. Rc6 Ng7 24. Bb5 g5 25. Rc8 Rxc8 26. Qxc8 g4 27. Nh2 gxh3 28. Bxd7 Qg6 29. g3 f4 30. exf4 Qe4 31. Kf1 Nf5 32. Be3 Nxe3+ 33. fxe3 Rxd7 34. Qxd7 Qg2+ 35. Ke1 Bb4+ 36. Rc3 Bxc3+ 37. bxc3 Qxg3+ 38. Kd1 Qg1+ 39. Kc2 Qxh2+ 40. Kb3 Qg2 41. Qxe6+ Kf8 42. Qf6+ 1/2-1/2