[Event "Olympiad-17 Preliminaries B"]
[Site "Havana"]
[Date "1966.10.27"]
[Round "2"]
[White "Ujtumen, Tudev"]
[Black "Ivkov, Borislav"]
[Result "0-1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Re8 13. Nf1 Bf8 14. Bg5 Nd7 15. Ne3 Nb6 16. b3 f6 17. Bh4 Be6 18. d5 Bd7 19. Nh2 c4 20. b4 Nb7 21. Nhg4 Kh8 22. Nf5 Bxf5 23. exf5 a5 24. Re3 Qf7 25. Be4 Ra7 26. f3 Rea8 27. a3 Be7 28. Bf2 Bd8 29. Qc1 axb4 30. cxb4 Nxd5 31. Re2 Bb6 32. Bxb6 Nxb6 33. Qe3 Ra6 34. Bxb7 Qxb7 35. Rd2 d5 36. Qc5 d4 37. Qxb5 Qd5 38. Qxd5 Nxd5 39. Rc2 c3 0-1