[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.12.08"]
[Round "18"]
[White "Klaman, Konstantin"]
[Black "Ragozin, Viacheslav"]
[Result "1/2-1/2"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 O-O 6. Bd3 c5 7. O-O Nc6 8. dxc5 Qa5 9. Nb5 Ne8 10. Nfd4 e5 11. Nb3 Qd8 12. Bg3 e4 13. Be2 Bxb2 14. Rb1 Be5 15. Bxe5 Nxe5 16. c4 Be6 17. cxd5 Bxd5 18. Nc3 Nf6 19. Qd4 Nc6 20. Qa4 Qe7 21. Nxd5 Nxd5 22. Rfc1 Rfd8 23. h3 Rac8 24. Bb5 Ncb4 25. Bc4 Nd3 26. Bxd3 exd3 27. Qc4 b6 28. Qxd3 Nb4 29. Qe2 Nd3 30. Rc3 Nxc5 31. Qc2 Rc7 32. Rc1 Rdc8 33. Nd4 Ne6 34. Rc6 Qd7 1/2-1/2