[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1970.01.23"]
[Round "9"]
[White "Bobotsov, Milko Georgiev"]
[Black "Donner, Jan Hein"]
[Result "0-1"]
1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 e5 5. d5 Bg7 6. f3 O-O 7. Be3 c6 8. Bd3 cxd5 9. cxd5 a6 10. Nge2 Ne8 11. O-O Nd7 12. g4 b5 13. Ng3 Bf6 14. Qd2 Nc5 15. Bc2 Bd7 16. b4 Na4 17. Nxa4 bxa4 18. Bd3 Nc7 19. Rfc1 Qb8 20. Rc2 Nb5 21. Ne2 Qb7 22. Rac1 Bd8 23. Kg2 Bb6 24. Rc6 Bxc6 25. dxc6 Qa7 26. Bxb6 Qxb6 27. Bxb5 Qxb5 28. Nc3 Qxb4 29. a3 Qxa3 30. Nd5 Kg7 31. c7 Qb3 32. Rc3 Qb5 33. Qc2 Rfc8 34. Rc4 Ra7 35. Qxa4 Qxa4 36. Rxa4 a5 37. Kf2 f6 38. Ke3 Kf7 39. Kd3 Ke6 40. h4 Kd7 41. Nxf6+ Kxc7 42. Nxh7 Rh8 43. Nf6 Rxh4 44. Nd5+ Kd7 45. Nb6+ Kc6 0-1