[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.24"]
[Round "9"]
[White "Bykov, Vladimir"]
[Black "Estrin, Yakov Borisovich"]
[Result "0-1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 O-O 6. a3 Bxc3+ 7. bxc3 Nc6 8. cxd5 exd5 9. c4 Bg4 10. Bb2 Re8 11. Rc1 Ne7 12. Be2 c6 13. O-O Ne4 14. Re1 Qd6 15. Ne5 Bxe2 16. Qxe2 f6 17. Nd3 Nf5 18. Qc2 Qd7 19. Nf4 Rac8 20. Qd3 g5 21. Ne2 Ned6 22. cxd5 cxd5 23. Rc5 Nc4 24. Bc1 b6 25. Rxc8 Qxc8 26. Nc3 Qe6 27. e4 Nfd6 28. f3 f5 29. Re2 fxe4 30. fxe4 dxe4 31. Nxe4 Nxe4 32. d5 Qf5 33. Qxc4 Rc8 0-1