[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1973.01.22"]
[Round "6"]
[White "Donner, Jan Hein"]
[Black "Enklaar, Bert F"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. e4 Bg7 8. Be2 O-O 9. O-O Re8 10. Qc2 Bg4 11. Bf4 a6 12. a4 Qc7 13. Rfe1 Nbd7 14. a5 Re7 15. Nd2 Bxe2 16. Rxe2 Rf8 17. Nc4 Ne8 18. Na4 Bd4 19. Rae1 f6 20. Be3 Bxe3 21. Rxe3 Ne5 22. Nab6 Qd8 23. f4 Ng4 24. R3e2 Nc7 25. h3 Nh6 26. b4 cxb4 27. Qb2 Nb5 28. Qxb4 g5 29. fxg5 fxg5 30. Qd2 Rg7 31. e5 dxe5 32. Rxe5 Nf5 33. Rf1 Nfd6 34. Rxf8+ Kxf8 35. Re6 Rg6 36. Qf2+ Kg8 37. Nxd6 Nxd6 38. Qg3 Kf7 39. Qe5 Qc7 40. Rxg6 Kxg6 41. Qe3 Qf7 1/2-1/2