[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.12.03"]
[Round "15"]
[White "Bykov, Vladimir"]
[Black "Mnatsakanian, Eduard A"]
[Result "1-0"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 d6 5. e4 b5 6. cxb5 Bg7 7. Nf3 O-O 8. Bc4 a6 9. bxa6 Bxa6 10. Bxa6 Rxa6 11. O-O Nbd7 12. Qe2 Ra8 13. Bg5 Qc7 14. Nd2 Rfb8 15. Nc4 Nb6 16. Nd2 Na4 17. Nxa4 Rxa4 18. b3 Ra7 19. a4 h6 20. Be3 Rb4 21. f3 Nd7 22. Rac1 Nb6 23. Qf2 Ra5 24. Kh1 Qd7 25. Qe2 Kh7 26. Qd3 Kh8 27. Rc2 Kh7 28. Rfc1 Ra8 29. Qf1 Ra5 30. h3 Ra8 31. Qd3 Ra5 32. Kh2 e6 33. dxe6 Qxe6 34. Nc4 Nxc4 35. Rxc4 Rb6 36. Kh1 Ra8 37. Rb1 Rab8 38. a5 Ra6 39. Ra4 Rba8 40. Bd2 Qe5 41. b4 cxb4 42. Bxb4 Qg3 43. Be1 Qf4 44. Qd2 Qe5 45. Rb7 Qe8 46. Ra2 Bf6 47. Qd5 Kg7 48. Rc2 R8a7 49. Rcc7 Rxb7 50. Rxb7 Ra8 51. a6 Rb8 52. Rxf7+ Kg8 53. a7 1-0