[Event "URS-ch23 Semifinal"]
[Site "Leningrad"]
[Date "1955.12.06"]
[Round "17"]
[White "Chistiakov, Alexander Nikolaevi"]
[Black "Krogius, Nikolai V"]
[Result "0-1"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Nf3 Nfd7 7. Be3 c6 8. O-O-O f6 9. g4 Kc7 10. Rg1 a5 11. Nh4 Nc5 12. f4 Be6 13. b3 a4 14. Kb2 axb3 15. axb3 Nbd7 16. Nf3 b5 17. cxb5 Bxb3 18. Rc1 Bf7 19. fxe5 Nb6 20. Bd4 Nb3 21. Rd1 Nxd4 22. Rxd4 Bc5 23. e3 Bxd4 24. exd4 Na4+ 25. Nxa4 Rxa4 26. Bd3 Ra2+ 27. Kb1 Rha8 28. exf6 gxf6 29. Be4 Bg6 30. Bxg6 hxg6 31. bxc6 Ra1+ 32. Kc2 R8a2+ 33. Kd3 Rxg1 34. Nxg1 Rxh2 35. g5 fxg5 36. Nf3 Rh3 37. Ke4 Kxc6 38. Nxg5 Rg3 39. Nf7 Rg1 40. Ne5+ Kd6 41. Nc4+ Ke6 42. Ne5 Kf6 43. Kf4 Rf1+ 44. Ke4 Re1+ 45. Kf4 g5+ 46. Kf3 Kf5 47. Nc4 g4+ 48. Kf2 Rc1 49. Ne3+ Kf4 50. Ng2+ Kg5 51. Ne3 Ra1 52. d5 Ra2+ 53. Kg3 Rd2 54. Ng2 Rxd5 55. Nf4 Re5 56. Ng2 Ra5 57. Kf2 Ra2+ 58. Kg3 Ra3+ 59. Kh2 Rh3+ 60. Kg1 Rb3 61. Kh2 Rf3 62. Ne1 Kf4 63. Ng2+ Ke4 64. Ne1 Ra3 65. Ng2 Kf3 0-1