[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.12.03"]
[Round "15"]
[White "Ragozin, Viacheslav"]
[Black "Krogius, Nikolai V"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d3 d6 9. c3 Nd7 10. Nbd2 Bf6 11. Nf1 Nb6 12. Be3 Rb8 13. h3 Na5 14. Bc2 c5 15. g4 Nc6 16. Ng3 Be7 17. Kh1 d5 18. Rg1 dxe4 19. dxe4 Nc4 20. Qc1 Kh8 21. Nf5 Be6 22. Rd1 Qc7 23. b3 Nxe3 24. Nxe3 Qa7 25. Nd5 b4 26. c4 Nd4 27. Nxd4 1/2-1/2