[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.09.23"]
[Round "1"]
[White "Portisch, Lajos"]
[Black "Torre, Eugenio"]
[Result "0-1"]
[WhiteElo "2640"]
[BlackElo "2520"]
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c5 6. dxc5 dxc5 7. Qxd8+ Kxd8 8. Be3 Nfd7 9. Nge2 Nc6 10. O-O-O b6 11. f4 Bb7 12. g3 Na5 13. b3 e6 14. Bh3 Ke7 15. f5 Be5 16. fxe6 fxe6 17. Bf4 Nc6 18. Nb5 Nf6 19. Rd6 Bxd6 20. Bxd6+ Kf7 21. Rf1 e5 22. Bd7 Nb4 23. Nc7 Rad8 24. Be6+ Kg7 25. Be7 Nxe4 26. Bd5 Bxd5 27. cxd5 Rxd5 28. g4 Rc8 29. Nxd5 Nxd5 30. Bh4 c4 31. Kb2 c3+ 32. Ka3 Ne3 33. Rg1 Nc2+ 34. Ka4 Nd4 0-1