[Event "URS-ch25 Semifinal"]
[Site "Sverdlovsk"]
[Date "1957.12.04"]
[Round "16"]
[White "Aronson, Lev Abramovich"]
[Black "Prokhorovich, Taras E"]
[Result "1-0"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. c4 c6 5. Qb3 Qc8 6. Nc3 e6 7. Bd2 Be7 8. Rc1 O-O 9. Be2 h6 10. O-O Nbd7 11. Rfd1 Rb8 12. a3 Qd8 13. Qa2 Bd6 14. cxd5 exd5 15. Na4 Ne4 16. b4 Nxd2 17. Rxd2 Qe7 18. Nc5 a6 19. a4 Nf6 20. b5 axb5 21. axb5 Ra8 22. Qb3 b6 23. Na4 c5 24. dxc5 bxc5 25. Nb6 c4 26. Qd1 Ba3 27. Nxa8 Rxa8 28. Ra2 Re8 29. Rca1 Bc5 30. Nd4 Bg6 31. Bf3 Ne4 32. Ra8 Rxa8 33. Rxa8+ Kh7 34. Qa1 c3 35. Rc8 Bxd4 36. exd4 Qb7 37. Qa6 Qe7 38. Qa1 Qb7 39. Qa6 Qe7 40. Qa8 Bf5 41. Rh8+ Kg6 42. Qc6+ Qe6 43. Bxe4 Qxc6 44. bxc6 dxe4 45. Ra8 1-0