[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.28"]
[Round "12"]
[White "Estrin, Yakov Borisovich"]
[Black "Ravinsky, Grigory Ionovich"]
[Result "1/2-1/2"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 a6 7. Nf3 c5 8. Bxe7 Qxe7 9. dxc5 Nc6 10. Qe2 Qxc5 11. O-O-O b5 12. h5 h6 13. Rh4 b4 14. Na4 Qa5 15. b3 Qc7 16. Qe3 O-O 17. Re1 a5 18. g4 Ba6 19. Bxa6 Rxa6 20. g5 hxg5 21. Qxg5 Ndxe5 22. Nxe5 f6 23. Qg3 Nxe5 24. f4 Nc6 25. Qd3 Ra7 26. Rxe6 Nd8 27. Re2 Qd6 28. h6 Ne6 29. Qe3 Re7 30. hxg7 Rfe8 31. Rh8+ Kxg7 32. Rxe8 Rxe8 33. f5 Nc7 34. Qg1+ Kf8 35. Rxe8+ Nxe8 36. Qc5 Qxc5 37. Nxc5 Nd6 38. Ne6+ Ke7 39. Nd4 1/2-1/2