[Event "URS-ch18 Semifinal"]
[Site "Leningrad"]
[Date "1950.??.??"]
[Round "1"]
[White "Koblencs, Aleksandrs"]
[Black "Alatortsev, Vladimir"]
[Result "0-1"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 d6 7. c3 Nd7 8. d3 O-O 9. h3 Bf6 10. Nbd2 Nc5 11. Bc2 Ne6 12. Nf1 g6 13. Be3 Bg7 14. d4 Nf4 15. dxe5 dxe5 16. Bc5 Re8 17. Qxd8 Nxd8 18. Ne3 f6 19. Ba4 b5 20. Bb3+ Be6 21. Ba3 Bf8 22. Bxf8 Kxf8 23. Rad1 Nb7 24. Bxe6 Nxe6 25. Nh2 c6 26. Neg4 Ke7 27. Nxf6 Kxf6 28. Ng4+ Ke7 29. Nxe5 Nf8 30. Nxc6+ Kf7 31. Rd5 Rac8 32. Ne5+ Kg7 33. f4 Rc5 34. Rd4 Rc7 35. Red1 Nc5 36. g3 Nfe6 37. Rd5 Nxe4 38. Kg2 Nf6 39. Rd6 Nc5 40. b4 Na4 41. Rxa6 Nxc3 42. Rdd6 Nce4 43. Rdc6 Rec8 44. Kf3 Rxc6 45. Nxc6 Nc3 46. a3 Nb1 47. a4 bxa4 48. b5 Na3 49. b6 Rxc6 50. Ra7+ Kf8 51. b7 Rc3+ 52. Kg2 Nd7 53. Rxa4 Rb3 54. Ra8+ Ke7 55. Ra7 Nc4 0-1