[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1971.01.15"]
[Round "4"]
[White "Donner, Jan Hein"]
[Black "Langeweg, Kick"]
[Result "0-1"]

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. d5 Ne7 10. Nh4 h6 11. f3 g5 12. Nf5 Nxf5 13. exf5 Nh5 14. g3 Ng7 15. Qc2 Bd7 16. Kf2 Qf6 17. g4 O-O-O 18. Be3 Qe7 19. h4 f6 20. Rh3 Rdf8 21. Rah1 Rhg8 22. hxg5 hxg5 23. Rh7 Qd8 24. Kg2 Kb8 25. Qb2 Be8 26. Bc2 Qa5 27. R1h6 Qd8 28. Qa3 Rf7 29. Qc1 Qa5 30. Bb3 Qd8 31. Qc2 Qe7 32. Qd1 Nxf5 33. Rxf7 Nxe3+ 34. Kg3 Bxf7 35. Qd3 f5 36. gxf5 g4 37. Qxe3 gxf3+ 38. Kxf3 e4+ 39. Ke2 Qe5 40. Bc2 Rg2+ 41. Kd1 Qxf5 42. Kc1 Qf1+ 43. Kb2 Qd3 44. Qc1 Qxc4 0-1