[Event "URS-ch39 Semifinal"]
[Site "Ivano Frankivsk"]
[Date "1971.05.??"]
[Round "?"]
[White "Kogan, Boris Markovich"]
[Black "Kholmov, Ratmir D"]
[Result "1/2-1/2"]

1. d4 Nf6 2. Nf3 e6 3. g3 c5 4. Bg2 cxd4 5. O-O d5 6. Nxd4 e5 7. Nb3 Nc6 8. Bg5 Be6 9. Nc3 d4 10. Ne4 Be7 11. Bxf6 gxf6 12. Nec5 Bxc5 13. Nxc5 Qb6 14. Nxe6 fxe6 15. a4 O-O-O 16. Ra3 f5 17. Qd3 e4 18. Qb5 Qc7 19. f3 Rd5 20. Qc4 Qe5 21. fxe4 Rc5 22. Qd3 Nb4 23. Qf3 Nxc2 24. exf5 Nxa3 25. Qxb7+ Kd8 26. f6 Qc7 27. Qa8+ Qc8 28. Qxa7 Qc7 29. Qa8+ Qc8 30. Qa7 Qc7 1/2-1/2