[Event "URS-ch39 Semifinal"]
[Site "Daugavpils"]
[Date "1971.06.??"]
[Round "?"]
[White "Vaganian, Rafael A"]
[Black "Katalymov, Boris N"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. Qc2 e5 9. dxc5 dxc5 10. Ng5 h6 11. Ne4 b6 12. O-O Bb7 13. Nxf6+ Qxf6 14. Be4 Na5 15. Bd5 O-O-O 16. e4 Ba6 17. Qa4 Rxd5 18. exd5 Bxc4 19. Rd1 Rd8 20. Be3 Qg6 21. Bxc5 Bxd5 22. g3 Qf5 23. c4 Bf3 24. Rxd8+ Kxd8 25. Qa3 Nc6 26. Be3 Ke8 27. Qc1 Nb4 28. Qf1 Nc2 29. Rc1 Qe4 30. c5 Nxe3 31. Qb5+ Kd8 32. cxb6 Be2 33. Qc6 Qxc6 34. Rxc6 axb6 35. fxe3 b5 36. Rc5 e4 37. Kf2 Bd3 38. Ke1 Kd7 39. Kd2 Kd6 40. Rc8 1-0