[Event "Interzonal-04"]
[Site "Portoroz"]
[Date "1958.09.04"]
[Round "18"]
[White "Larsen, Bent"]
[Black "De Greif, Boris"]
[Result "0-1"]

1. f4 Nf6 2. Nf3 g6 3. b4 Bg7 4. Bb2 O-O 5. e3 d6 6. Na3 b6 7. Be2 c5 8. bxc5 bxc5 9. O-O Nc6 10. Qe1 Rb8 11. Rb1 Be6 12. Nc4 Rb4 13. Bxf6 Bxf6 14. Rxb4 Nxb4 15. c3 Nc6 16. h4 Na5 17. Nxa5 Qxa5 18. Qg3 Qxa2 19. e4 Bc4 20. Bxc4 Qxc4 21. e5 dxe5 22. fxe5 Bg7 23. Ra1 a6 24. h5 Rd8 25. Qh3 Qd3 26. Ra5 Bh6 27. hxg6 Qxg6 28. Ra4 Qb1+ 29. Kh2 Bg7 30. Rxa6 Qe4 31. Qg3 e6 32. Ra7 h6 33. Rc7 c4 34. Kh3 Rd3 35. Qg4 Qxe5 36. Rxc4 Qb8 37. Rb4 Qc7 38. Rb5 Kf8 39. Qb4+ Kg8 40. Qe4 Rd8 41. Rb7 Qd6 42. c4 Rc8 43. Ra7 Qc5 44. Ra8 Rxa8 45. Qxa8+ Bf8 46. Qe4 Be7 47. Qf4 Bg5 48. Qb8+ Kh7 49. Qb5 Qc8 50. c5 e5+ 51. g4 Bf4 52. c6 h5 53. Qd3+ Kh8 54. Qd7 hxg4+ 55. Kh4 Qg8 56. Qxg4 Qd8+ 57. Kh5 Qf6 58. Qc8+ Kh7 59. c7 Qg6+ 60. Kh4 Qg3+ 61. Kh5 Qxf3+ 62. Qg4 Qh1+ 63. Qh4 Qc6 64. Kg4+ Kg7 65. Qd8 Qg2+ 66. Kh5 Qh3+ 0-1