[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.25"]
[Round "10"]
[White "Spassky, Boris Vasilievich"]
[Black "Cherepkov, Alexander V"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 d6 6. Bd2 O-O 7. e4 Re8 8. Nge2 exd5 9. cxd5 a6 10. a4 Nbd7 11. Ng3 Rb8 12. Be2 Ne5 13. O-O c4 14. Kh1 b5 15. axb5 axb5 16. Bg5 h6 17. Be3 Ned7 18. Nf5 Bc5 19. Nd4 Ne5 20. Qd2 Bd7 21. Rfe1 Qb6 22. Nc2 Bxe3 23. Nxe3 1/2-1/2