[Event "Linares-03"]
[Site "Linares"]
[Date "1981.01.21"]
[Round "4"]
[White "Portisch, Lajos"]
[Black "Ljubojevic, Ljubomir"]
[Result "1/2-1/2"]
[WhiteElo "2650"]
[BlackElo "2605"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Qb3 a5 6. e3 Nbd7 7. Qc2 Bd6 8. b3 O-O 9. Be2 Re8 10. O-O b6 11. Bb2 Bb7 12. Rac1 Qe7 13. Rfd1 Ba3 14. Bxa3 Qxa3 15. Ne5 Nxe5 16. dxe5 Nd7 17. f4 Red8 18. Kh1 Qe7 19. Na4 Rac8 20. Qb2 Rb8 21. Qc2 Ba8 22. cxd5 exd5 23. e4 dxe4 24. Qxe4 c5 25. Qe3 Bc6 26. Nc3 Nf8 27. Bb5 Bxb5 28. Nxb5 f6 29. Nd6 fxe5 30. Qxe5 Qxe5 31. fxe5 Ne6 32. Rf1 1/2-1/2