[Event "Montreal International"]
[Site "Montreal"]
[Date "1979.04.20"]
[Round "8"]
[White "Portisch, Lajos"]
[Black "Timman, Jan H"]
[Result "1/2-1/2"]
[WhiteElo "2640"]
[BlackElo "2625"]
1. Nf3 g6 2. c4 Bg7 3. d4 Nf6 4. g3 O-O 5. Bg2 d6 6. Nc3 Nc6 7. O-O a6 8. Nd5 Bg4 9. Ne3 Bxf3 10. Bxf3 Nd7 11. d5 Nd4 12. Bg2 c5 13. Bd2 b5 14. Rc1 a5 15. cxb5 a4 16. Nc4 Nxb5 17. f4 Qc7 18. e3 Ra6 19. Rf2 Qa7 20. Bf1 Rb8 21. Be1 Qa8 22. Rd2 Ra7 23. Qf3 Nc7 24. Bg2 Nb6 25. b3 axb3 26. axb3 1/2-1/2