[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.12.03"]
[Round "15"]
[White "Cherepkov, Alexander V"]
[Black "Aronin, Lev Solomonovich"]
[Result "1/2-1/2"]

1. Nf3 c5 2. g3 Nf6 3. Bg2 Nc6 4. O-O d5 5. d4 e6 6. c4 cxd4 7. Nxd4 Bc5 8. Nb3 Bb6 9. cxd5 Nxd5 10. Nc3 Nxc3 11. bxc3 O-O 12. Ba3 Re8 13. Qxd8 Rxd8 14. Rfd1 Bd7 15. Nc5 Bxc5 16. Bxc5 Be8 17. Bd6 Rac8 18. c4 Na5 19. c5 f6 20. f4 Bc6 21. e4 f5 22. e5 Bxg2 23. Kxg2 b6 24. Rab1 bxc5 25. Rdc1 Rd7 26. Rxc5 Rxc5 27. Bxc5 Rc7 28. Rb8+ Kf7 29. Bd6 Rc2+ 30. Kf3 Nc6 31. Rb7+ Kg8 32. Rc7 Nd4+ 33. Ke3 Rxc7 34. Bxc7 Nc2+ 35. Kd3 Nb4+ 36. Kc4 Nxa2 37. Ba5 Nc1 38. Bd2 Ne2 39. Kd3 Ng1 40. Be3 Nf3 41. h3 g5 42. Bxa7 gxf4 43. gxf4 Nh4 44. Bf2 Ng6 45. Bg3 Kf7 46. Kc4 Ke7 47. Kb5 Kd7 48. Kc5 h5 49. Kb5 Ne7 50. Be1 Nd5 51. Bd2 1/2-1/2