[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1968.01.13"]
[Round "4"]
[White "Langeweg, Kick"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 c6 5. O-O O-O 6. d4 d5 7. b3 Bf5 8. Bb2 Ne4 9. Nbd2 Qa5 10. Qc1 Nd7 11. Nxe4 Bxe4 12. Re1 Rad8 13. Bc3 Qa6 14. Bf1 dxc4 15. Nd2 Nf6 16. bxc4 Qb6 17. f3 Bf5 18. e4 Bc8 19. Rb1 Qc7 20. Qb2 Ne8 21. f4 c5 22. d5 Bxc3 23. Qxc3 f6 24. Bg2 b6 25. Re3 Ng7 26. h3 e5 27. Rf1 Rde8 28. Ref3 f5 29. Re3 exf4 30. gxf4 fxe4 31. Nxe4 Nh5 32. Rfe1 Qxf4 33. d6 Bb7 34. Rf1 Qh4 35. Nf6+ Nxf6 36. Rxe8 Nxe8 37. Rxf8+ Kxf8 38. Qh8+ Kf7 39. d7 Nf6 1/2-1/2