[Event "Vidmar Memorial-03"]
[Site "Portoroz/Ljubljana"]
[Date "1975.06.21"]
[Round "15"]
[White "Portisch, Lajos"]
[Black "Ljubojevic, Ljubomir"]
[Result "1-0"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. Nf3 Nd7 5. e4 e5 6. Be2 Nh6 7. h4 c6 8. d5 Nf6 9. dxc6 O-O 10. cxb7 Bxb7 11. Nd2 Qd7 12. h5 g5 13. f3 g4 14. Nb3 Kh8 15. Bg5 Nfg8 16. c5 gxf3 17. gxf3 f6 18. Be3 Rfd8 19. cxd6 Nf7 20. Nc5 Qc6 21. Qa4 Rxd6 22. Qb3 Nd8 23. Rg1 Ne7 24. Nb5 Bc8 25. Nxd6 Qxd6 26. Rd1 Qc7 27. h6 1-0