[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.15"]
[Round "4"]
[White "Stoliar, Efim Samoilovich"]
[Black "Bykov, Vladimir"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. e4 c5 6. Nge2 O-O 7. O-O Nc6 8. a3 Ne8 9. Rb1 Rb8 10. b4 b6 11. d3 Nc7 12. b5 Nd4 13. Nxd4 Bxd4 14. Bb2 e6 15. Qd2 Qf6 16. a4 Bb7 17. Kh1 Qg7 18. f4 f5 19. Ne2 Bxb2 20. Qxb2 Ne8 21. Qxg7+ Nxg7 22. Nc3 Nh5 23. Rfe1 Kf7 24. a5 Nf6 25. Ra1 Rfe8 26. axb6 axb6 27. Ra7 Re7 28. Rea1 Ng4 29. Nd1 Nf6 30. exf5 exf5 31. Bxb7 Rbxb7 32. Rxb7 Rxb7 33. Kg2 Ke6 34. Ra6 d5 35. Nc3 d4 36. Na4 Nd7 37. Kf3 Rb8 38. h3 h5 39. g4 h4 40. Nb2 Kf6 41. Nd1 Ke6 1/2-1/2