[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1971.01.21"]
[Round "8"]
[White "Donner, Jan Hein"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 e5 5. Be3 exd4 6. Bxd4 Nf6 7. f3 Nc6 8. Be3 O-O 9. Nge2 Ne5 10. Nf4 c6 11. Qb3 Nfd7 12. Rd1 Qe7 13. Be2 Nc5 14. Qc2 f5 15. b4 fxe4 16. bxc5 exf3 17. cxd6 Qe8 18. gxf3 Nxf3+ 19. Kf2 Ng5 20. h4 Ne6 21. Kg3 Nxf4 22. Bxf4 Rxf4 23. Kxf4 Bf5 24. Bd3 Qe5+ 25. Kf3 Bg4+ 26. Kxg4 Qh5+ 27. Kg3 Be5+ 28. Kf2 Rf8+ 29. Bf5 Rxf5+ 30. Ke3 Qf3+ 31. Kd2 Bf4+ 32. Ke1 Bg3+ 33. Kd2 Bf4+ 34. Ke1 Qxh1+ 35. Ke2 Qg2+ 36. Kd3 Qf3+ 0-1