[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.01.11"]
[Round "4"]
[White "Bobotsov, Milko Georgiev"]
[Black "Ivkov, Borislav"]
[Result "0-1"]

1. c4 Nf6 2. Nc3 c6 3. Nf3 d5 4. cxd5 cxd5 5. d4 Nc6 6. Bf4 e6 7. e3 Bd6 8. Bxd6 Qxd6 9. Be2 O-O 10. O-O Bd7 11. Qb1 Rfc8 12. Rc1 Be8 13. a3 Na5 14. Qa2 Rc7 15. b4 Rac8 16. Qb2 Nc4 17. Bxc4 Rxc4 18. Ne5 R4c7 19. f3 Qa6 20. Na2 Nd7 21. Rxc7 Rxc7 22. Rc1 Rxc1+ 23. Nxc1 Nb6 24. Ncd3 f6 25. Nc5 Na4 26. Nxa6 Nxb2 27. Nc7 Ba4 28. Ng4 Kf7 29. e4 dxe4 30. fxe4 Nc4 31. Kf2 Nxa3 32. Ne3 Nb5 33. Nxb5 Bxb5 34. Nc2 Bd3 35. Na3 Bxe4 36. Nb5 Bc6 37. Nxa7 Bd7 38. b5 Ke7 0-1