[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.28"]
[Round "12"]
[White "Aronin, Lev Solomonovich"]
[Black "Ragozin, Viacheslav"]
[Result "1/2-1/2"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 a6 5. Bd3 Nc6 6. exd5 Qxd5 7. dxc5 Bxc5 8. Ne4 Be7 9. Qe2 Nf6 10. O-O Nb4 11. Nxf6+ Bxf6 12. Be4 Qh5 13. Bf4 Nd5 14. Bxd5 Qxd5 15. Be5 Bd7 16. Rfd1 Qc5 17. c4 Rc8 18. Rac1 Bc6 19. Bd6 Qh5 20. b4 Be7 21. Rc3 1/2-1/2