[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1972.01.29"]
[Round "15"]
[White "Smejkal, Jan"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O c6 6. d4 d5 7. Nbd2 Bf5 8. b3 a5 9. Bb2 Ne4 10. Nh4 Nxd2 11. Qxd2 Be6 12. Rac1 Nd7 13. e4 dxe4 14. Bxe4 a4 15. Bg2 axb3 16. axb3 Nc5 17. Qd1 Qc8 18. Qc2 Na6 19. Rfe1 Rd8 20. Rcd1 Bf6 21. Bc3 Bh3 22. Bxh3 Qxh3 23. Ng2 Nc7 24. d5 cxd5 25. Bxf6 exf6 26. Nf4 Qg4 27. cxd5 Nb5 28. Qb2 Qf5 29. Re7 Nd6 30. Ng2 Re8 31. Qe2 Rxe7 32. Qxe7 Qe5 33. Qxe5 fxe5 34. Ne3 Rc8 35. Ra1 Rc3 36. Ra8+ Kg7 37. Rd8 Nf5 38. Ng4 e4 39. d6 Nd4 40. Ne5 Nf3+ 41. Nxf3 exf3 42. h4 Rd3 43. Re8 Rxd6 44. Re3 Rf6 45. Kh2 h5 46. Kh3 1/2-1/2