[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.18"]
[Round "6"]
[White "Spassky, Boris Vasilievich"]
[Black "Klaman, Konstantin"]
[Result "1-0"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 5. e3 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 Nc6 8. Nc3 O-O
9. Be2 Ngxe5 10. Nxe5 Nxe5 11. O-O d6 12. f4 Nd7 13. Bf3 Nf6 14. h3 Rb8 15. Rad1 Bd7 16.
e4 Re8 17. Qf2 a6 18. Rfe1 h6 19. c5 dxc5 20. Qxc5 b6 21. Qf2 Qc8 22. e5 Nh7 23. g4 f6 24.
Qd2 Nf8 25. exf6 gxf6 26. Qd4 Rxe1+ 27. Rxe1 Qd8 28. Nd5 Be6 29. Qxf6 Qxf6 30. Nxf6+ Kf7
31. Nd5 Rd8 32. Nxc7 Bxa2 33. Nxa6 Ne6 34. Nb4 Bb3 35. Re3 Nd4 36. Kf2 Bc4 37. Rc3 b5 38.
Ke3 Nb3 39. Bd5+ Rxd5 40. Rxc4 Rd7 41. Rc6 1-0