[Event "Interpolis-05"]
[Site "Tilburg"]
[Date "1981.10.14"]
[Round "10"]
[White "Timman, Jan H"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2620"]
[BlackElo "2650"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. e3 Be7 8. Bb5+ c6 9. Bd3 Nxc3 10. bxc3 c5 11. O-O Nc6 12. Qe2 O-O 13. Rd1 cxd4 14. cxd4 Rc8 15. Bb2 Bf6 16. Nd2 g6 17. Ne4 Bg7 18. a4 Qd5 19. Ba3 Rfd8 20. Rab1 Na5 21. f3 f5 22. Rb5 Qc6 23. Rxa5 bxa5 24. Nc5 Kh8 25. Bc4 e5 26. d5 Qd6 27. Nxb7 Qxa3 28. d6 Qxa4 29. Bb5 Qb3 30. d7 Rb8 31. Nxd8 Rxd8 32. e4 f4 33. g3 g5 34. gxf4 gxf4 35. Kh1 a4 36. Bc4 Qb6 37. Bf7 a3 38. Qg2 Qf6 39. Be8 Qe6 40. Rg1 Bf6 41. Qf2 1/2-1/2