[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.15"]
[Round "4"]
[White "Mnatsakanian, Eduard A"]
[Black "Shamkovich, Leonid Alexandrovic"]
[Result "0-1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nh6 7. h3 f5 8. Qd2 Qa5 9. Qxa5 Nxa5 10. Nc3 Nc6 11. Nxc6 bxc6 12. c5 fxe4 13. Bxh6 Bxh6 14. Nxe4 a5 15. Bc4 Ba6 16. Bxa6 Rxa6 17. O-O Bg7 18. Rfe1 O-O 19. Rad1 Ra7 20. Re2 Rb8 21. b3 a4 22. bxa4 Rbb7 23. g3 Rxa4 24. Kg2 h6 25. Rd3 Rba7 26. Kf1 Rd4 27. Rb3 Rd1+ 28. Kg2 Rd5 29. Rb4 Ra3 30. h4 Kf7 31. Rb7 Bd4 32. Rd2 Ra4 33. Rc2 Re5 34. f3 Rd5 35. g4 Be5 36. Re2 Ra3 37. g5 h5 38. f4 Bxf4 39. Nd6+ Bxd6 40. cxd6 Rxd6 41. Rf2+ Ke6 42. Re2+ Kf5 43. Rf2+ Ke4 44. Rb4+ Rd4 45. Rf4+ Kxf4 46. Rxd4+ Kf5 47. Rxd7 Rxa2+ 48. Kg3 Ra3+ 0-1