[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.10.01"]
[Round "7"]
[White "Portisch, Lajos"]
[Black "Timman, Jan H"]
[Result "1/2-1/2"]
[WhiteElo "2640"]
[BlackElo "2625"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. e4 e5 9. h3 h6 10. Be3 Qa5 11. O-O O-O 12. Qb3 Qc7 13. Rae1 b6 14. d5 Ne7 15. Qd1 Ng6 16. Kh2 Bd7 17. g3 Nh7 18. Nd2 Qc8 19. h4 f5 20. exf5 Bxf5 21. Be2 Qd8 22. Rh1 Nf4 23. Bf3 Nd3 24. Reg1 1/2-1/2