[Event "URS-ch18 Semifinal"]
[Site "Gorky"]
[Date "1950.09.??"]
[Round "9"]
[White "Sidorov, Boris N"]
[Black "Ufimtsev, Anatoly Gavrilovich"]
[Result "0-1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e5 7. Nde2 h6 8. O-O Be7 9. Ng3 Bg4 10. f3 Qb6+ 11. Kh1 Bd7 12. Qd3 Nb4 13. Qe2 O-O 14. Be3 Qc7 15. Bb3 a6 16. Rfd1 Rac8 17. Qf2 b5 18. a4 bxa4 19. Nxa4 Nxc2 20. Bb6 Nxa1 21. Bxc7 Nxb3 22. Nc3 Rxc7 23. Qb6 Rxc3 24. bxc3 Nc5 25. Nf5 Bxf5 26. exf5 e4 27. Qc6 a5 28. c4 a4 29. Re1 a3 30. Ra1 Rb8 31. g4 e3 32. Qc7 Re8 33. Re1 Bf8 34. Qa5 Nd3 35. Re2 Nf4 36. Re1 d5 37. cxd5 N4xd5 38. Qa7 Bb4 39. Re2 Rc8 40. h4 Rc1+ 41. Kg2 Nf4+ 42. Kh2 Nxe2 43. g5 Bd6+ 44. Kg2 Rg1+ 45. Kh3 Rg3+ 46. Kh2 Rxg5+ 0-1