[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.11"]
[Round "1"]
[White "Nikitin, Aleksander S"]
[Black "Mnatsakanian, Eduard A"]
[Result "1-0"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Bxc6 dxc6 7. d3 Nd7 8. Nbd2 Bd6 9. Nc4 Qe7 10. b3 f6 11. Bb2 Nb6 12. Nxd6+ cxd6 13. Nd2 g5 14. d4 Be6 15. Qe2 O-O-O 16. a4 Qf7 17. Bc3 exd4 18. Ba5 Nd7 19. Bxd8 Rxd8 20. f4 gxf4 21. Rxf4 Rg8 22. Raf1 Qg6 23. Nf3 Bg4 24. Qf2 c5 25. Nh4 Qg5 26. Nf5 Kc7 27. h4 Qh5 28. Ne7 Rg7 29. Nd5+ Kb8 30. Nxf6 Nxf6 31. Rxf6 Bh3 32. Qf4 Rxg2+ 33. Kh1 Rg8 34. Qxd6+ Ka7 35. Qb6+ Kb8 36. Rf8+ Rxf8 37. Rxf8+ Bc8 38. Qf6 Qd1+ 39. Qf1 Qxc2 40. Qf4+ Ka7 41. Rxc8 Qd1+ 42. Kg2 Qc2+ 1-0