[Event "URS-ch23 Semifinal"]
[Site "Leningrad"]
[Date "1955.12.03"]
[Round "15"]
[White "Lein, Anatoly"]
[Black "Cherepkov, Alexander V"]
[Result "1/2-1/2"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d5 6. cxd5 Nxd5 7. d4 Nc6 8. e4 Nb6 9. d5 Nb8 10. Nc3 c6 11. Be3 cxd5 12. exd5 N8d7 13. Qb3 Nf6 14. Rfd1 Bg4 15. h3 Bxf3 16. Bxf3 Ne8 17. Nb5 Nd6 18. Rac1 Nxb5 19. Qxb5 Nc8 20. Qxb7 Nd6 21. Qc7 Bxb2 22. Qxd8 Rfxd8 23. Rc7 Bf6 24. a4 a5 25. g4 g5 1/2-1/2