[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.17"]
[Round "5"]
[White "Bykov, Vladimir"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. Nc3 cxd4 5. Nxd4 Bb4 6. Nb5 a6 7. Nd6+ Ke7 8. Nxc8+ Qxc8 9. Qb3 Nc6 10. Bg5 Qc7 11. e3 Qa5 12. Bxf6+ gxf6 13. Be2 Rhg8 14. O-O Bxc3 15. bxc3 Qc5 16. Rfd1 Na5 17. Qa4 Rad8 18. Rd4 Nc6 19. Rh4 Qg5 20. Qa3+ d6 21. Rg4 Qa5 22. Qb3 Rxg4 23. Bxg4 Qc7 24. Be2 Na5 25. Qb4 Qc5 26. Rb1 Rc8 27. Bf3 Qc7 28. Be2 Rb8 29. Rd1 h6 30. h3 Rg8 31. Bf3 b6 32. Be2 Qc6 33. Bf3 Qc7 34. Be2 f5 35. Rb1 Qc6 36. Bf1 Rb8 37. Be2 Qc7 38. c5 1/2-1/2