[Event "Interzonal-04"]
[Site "Portoroz"]
[Date "1958.09.03"]
[Round "17"]
[White "Petrosian, Tigran V"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]

1. c4 c5 2. Nf3 g6 3. d4 Bg7 4. d5 e5 5. Nc3 d6 6. e4 f5 7. g3 Ne7 8. Bg5 O-O 9. h4 h6 10. Bxe7 Qxe7 11. Bh3 f4 12. Bxc8 Rxc8 13. h5 g5 14. Nh2 Na6 15. Qg4 Nc7 16. O-O Rcb8 17. a4 a5 18. Ra3 b6 19. Nb5 Nxb5 20. cxb5 Re8 21. Nf3 Rad8 22. Nd2 Qd7 23. Qxd7 Rxd7 24. Nc4 Rb8 25. Kg2 Kf7 26. Re1 Ke7 27. Kf3 Bf6 28. gxf4 gxf4 29. Rg1 Bg5 30. Rxg5 hxg5 31. Kg4 Kd8 32. Rh3 Kc7 33. Nd2 Rh7 34. f3 Rg8 35. Nc4 Rhh8 36. Na3 Kd7 37. Rh1 Rh7 38. Rh2 Rhh8 39. Nc4 Kc7 40. Rh1 Rh7 41. Nd2 Rhh8 42. Nb1 Rh7 43. Nc3 1/2-1/2