[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.27"]
[Round "11"]
[White "Krogius, Nikolai V"]
[Black "Mnatsakanian, Eduard A"]
[Result "1-0"]

1. c4 e5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. e3 Bd7 6. Nge2 Bg7 7. O-O h5 8. d4 h4 9. d5 Na5 10. Qd3 b6 11. e4 Nb7 12. Be3 Nc5 13. Qd2 a5 14. f3 hxg3 15. hxg3 Qe7 16. Kf2 f5 17. Rh1 Nf6 18. Rxh8+ Bxh8 19. Rh1 Bg7 20. Ke1 O-O-O 21. Nc1 fxe4 22. Nxe4 Ncxe4 23. fxe4 Nh5 24. Bf2 Bf6 25. Nd3 Bg5 26. Qc3 Rf8 27. c5 dxc5 28. Bxc5 bxc5 29. Qxa5 Kb8 30. Nxc5 Bc8 31. Qb5+ Ka7 32. Bh3 Qe8 33. Qa5+ Kb8 34. Qb4+ Ka7 35. Bxc8 Qxc8 36. Qa4+ Kb8 37. Nd7+ Kb7 38. Qb4+ Ka7 39. Nxf8 Qg4 40. Qa5+ Kb7 41. Qb5+ Ka7 42. Qe2 Qxe2+ 43. Kxe2 Nxg3+ 44. Kf3 Nxh1 45. Kg2 Bc1 46. b3 Bb2 47. Nxg6 Kb6 48. Ne7 Kc5 49. Nc6 1-0