[Event "Interzonal-04"]
[Site "Portoroz"]
[Date "1958.08.15"]
[Round "7"]
[White "Olafsson, Fridrik"]
[Black "Neikirkh, Oleg"]
[Result "0-1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. e3 c5 5. d4 Nc6 6. cxd5 Nxd5 7. Bd3 Be7 8. O-O O-O 9. a3 Nxc3 10. bxc3 Bf6 11. Qc2 g6 12. Rd1 Qe7 13. a4 b6 14. Ba3 Na5 15. dxc5 bxc5 16. Rab1 Qc7 17. c4 Bd7 18. h4 Rfb8 19. Ng5 Rb6 20. Ne4 Be7 21. Qc3 Rxb1 22. Rxb1 e5 23. Qc2 Rd8 24. Nc3 Be6 25. Nd5 Bxd5 26. cxd5 Rxd5 27. h5 Qd6 28. Bf1 Nc6 29. Qe4 Rd2 30. h6 Qf6 31. f3 Qg5 32. Bc1 Rd6 33. f4 exf4 34. exf4 Qxh6 35. f5 Qh4 36. Qxh4 Bxh4 37. Bh6 g5 38. g3 Rxh6 39. gxh4 Rxh4 40. Bg2 Nb4 41. Re1 Rf4 42. Re5 Nd3 43. Re3 c4 44. Bd5 Nb2 45. Be4 Nxa4 46. Bc2 Nc5 47. Re5 Nd3 48. Ra5 Kg7 0-1