[Event "URS-ch25 Semifinal"]
[Site "Sverdlovsk"]
[Date "1957.11.15"]
[Round "4"]
[White "Kortschnoj, Viktor Lvovich"]
[Black "Averbakh, Yuri L"]
[Result "1-0"]
1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4 d5 6. exd6 Nxd6 7. Bd3 Qe7+ 8. Be3 Nc6 9. Qf4 g6 10. Nc3 Be6 11. Nd4 Bd7 12. Nxc6 bxc6 13. Qa4 Bg7 14. O-O O-O 15. Qa5 Bf5 16. Bxf5 Nxf5 17. Bc5 Nd6 18. Na4 Rfc8 19. Qa6 Qe4 20. c3 Nb5 21. Be3 Bf8 22. Rac1 Rd8 23. Rfe1 Re8 24. f3 Qh4 25. Bf2 Qf6 26. Nc5 Bxc5 27. Bxc5 Qh4 28. Bf2 Qc4 29. Rxe8+ Rxe8 30. a4 Nd6 31. Qxa7 Qf4 32. Rf1 Nc4 33. Qb7 Qd6 34. Qb4 Qxb4 35. cxb4 Nxb2 36. a5 Nd3 37. Rb1 Rb8 38. Bg3 Rxb4 39. Ra1 Rb8 40. Bxc7 Ra8 41. a6 c5 42. Bb6 c4 43. Bd4 Nb4 44. a7 Nc6 45. Be3 f5 46. Ra6 f4 47. Bf2 Ne7 48. Bd4 Nc8 49. Kf1 Kf7 50. Rc6 Ke7 51. Rxc4 Kd6 52. Rb4 Nxa7 53. Ra4 Nc6 54. Rxa8 Nxd4 55. Rh8 Ke6 56. Rxh7 Kf6 57. Ra7 g5 58. Ra6+ Ke5 59. Ke1 Nc2+ 60. Ke2 Kf5 61. Kd2 1-0