[Event "Vidmar Memorial 05th"]
[Site "Bled/Portoroz"]
[Date "1979.06.06"]
[Round "4"]
[White "Timman, Jan H"]
[Black "Ribli, Zoltan"]
[Result "1/2-1/2"]
[WhiteElo "2625"]
[BlackElo "2595"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. Qb3 a6 10. a4 Qe7 11. Rd1 Rd8 12. Qc2 b6 13. Na2 Bb7 14. Nxb4 cxb4 15. Qe2 Ne4 16. Bd2 a5 17. Be1 Rdc8 18. Rdc1 Rc7 19. Rc2 Rac8 20. Rac1 h6 21. Bb5 Qd8 22. Bd3 Rxc2 23. Rxc2 Rc7 24. Rxc7 Qxc7 25. Qc2 Qc6 26. Qxc6 Bxc6 27. Bc2 Kf8 1/2-1/2