[Event "URS-ch25 Semifinal"]
[Site "Sverdlovsk"]
[Date "1957.12.01"]
[Round "14"]
[White "Kots, Yury Isakovich"]
[Black "Prokhorovich, Taras E"]
[Result "1-0"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Nbd7 8. O-O Bd6 9. h3 O-O 10. Nh4 Be4 11. Nxe4 Nxe4 12. Nf3 c5 13. Qb3 Ndf6 14. Bd3 Rc8 15. Qxb7 Rc7 16. Qb3 Qa8 17. Qd1 c4 18. Bxe4 Qxe4 19. Qe2 Rb8 20. Rd1 h6 21. Ne1 Qh4 22. Kf1 Ne4 23. Nf3 Qf6 24. Qc2 Qg6 25. Kg1 f5 26. Bd2 Qf6 27. Be1 Qe7 28. Rab1 Kh7 29. d5 e5 30. Nd2 Nxd2 31. Bxd2 e4 32. Bc3 Rc5 33. Rd2 Bc7 34. f4 g5 35. Rbd1 Bd6 36. g3 Rcc8 37. Rg2 Rg8 38. Qf2 Rbf8 39. Kh1 Qf7 40. Qe2 gxf4 41. gxf4 Rxg2 42. Kxg2 Rg8+ 43. Kh2 Bc5 44. Qf2 Qh5 45. Rd2 Be7 46. Qf1 Bc5 47. Qf2 Qg6 48. Bd4 Be7 49. Bxa7 Bh4 50. Qf1 Qg3+ 51. Kh1 Qf3+ 52. Qxf3 exf3 53. Rd1 Rg3 54. Bd4 Rxh3+ 55. Kg1 Rg3+ 56. Kh2 Rg2+ 57. Kh3 Bf2 58. Rf1 h5 59. d6 h4 60. d7 Bg3 61. Rh1 Bf2 62. e4 Rg3+ 63. Kxh4 Rg1+ 64. Bxf2 Rxh1+ 65. Kg3 Rd1 66. exf5 Rxd7 67. Be1 Rd1 68. Kf2 Rd5 69. Kxf3 Rxf5 70. Ke4 Kg6 71. Bc3 Rf8 72. a5 Re8+ 73. Kd5 Kf5 74. Kxc4 Kxf4 75. Kd5 Kf5 76. Kc6 Ke6 77. a6 Rc8+ 78. Kb7 Kd7 79. Ba5 Rc5 80. Bb6 1-0