[Event "URS-ch23 Semifinal"]
[Site "Leningrad"]
[Date "1955.12.10"]
[Round "19"]
[White "Lein, Anatoly"]
[Black "Krogius, Nikolai V"]
[Result "0-1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d4 d6 5. d5 Nb8 6. Bd3 Nf6 7. c4 O-O 8. Nc3 c6 9. h3 Nbd7 10. Be3 a6 11. b4 cxd5 12. cxd5 Nh5 13. Rc1 g6 14. Qc2 Ng7 15. g4 Qe8 16. Nd2 f5 17. exf5 gxf5 18. gxf5 Qh5 19. Ne2 Nf6 20. Ng3 Qf7 21. Nde4 Nxe4 22. Bxe4 Kh8 23. Qc7 Ne8 24. Qb6 Nf6 25. Qc7 Nxe4 26. Nxe4 Bxf5 27. Nxd6 Qxd5 28. Qxe7 Qxh1+ 29. Ke2 Qd5 30. Bh6 Bd3+ 31. Ke1 Qh1+ 32. Kd2 Rxf2+ 33. Kc3 Qc6+ 34. Kxd3 Qd5+ 35. Kc3 Qd4+ 36. Kb3 Rb2+ 0-1