[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.12.01"]
[Round "14"]
[White "Estrin, Yakov Borisovich"]
[Black "Cherepkov, Alexander V"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. d4 Bg4 5. h3 Bh5 6. d5 Nb8 7. Bd3 Nf6 8. Nbd2 Be7 9. Qe2 c6 10. c4 Nbd7 11. O-O O-O 12. Re1 Nc5 13. Bc2 Bg6 14. b4 Na6 15. b5 cxb5 16. cxb5 Nc5 17. Bb1 Rc8 18. a4 Nh5 19. g3 Qd7 20. Kg2 f5 21. exf5 Bxf5 22. Bxf5 Qxf5 23. Ra3 Qf7 24. Ne4 Nxe4 25. Qxe4 Nf6 26. Qe2 Nxd5 27. Bg5 Nc3 28. Qe3 Qxf3+ 29. Qxf3 Rxf3 30. Bxe7 Rd3 31. Rc1 d5 32. Bd6 e4 33. Be5 d4 34. Bxd4 Rxd4 35. Raxc3 Rxc3 36. Rxc3 Rxa4 37. Rc8+ Kf7 38. Rc7+ Kf6 39. Rxb7 Ra2 40. Kf1 h5 1/2-1/2