[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.24"]
[Round "9"]
[White "Zilber, Israel"]
[Black "Mnatsakanian, Eduard A"]
[Result "1/2-1/2"]

1. c4 e5 2. Nc3 d6 3. g3 g6 4. Bg2 Nc6 5. Rb1 a5 6. d3 Bg7 7. e3 Nge7 8. a3 Be6 9. Nd5 Qd7 10. b4 axb4 11. axb4 Bxd5 12. cxd5 Na7 13. Ne2 Nb5 14. O-O O-O 15. Bb2 c6 16. dxc6 bxc6 17. d4 Qe6 18. Qd3 Rfd8 19. Ra1 Rxa1 20. Rxa1 Nd5 21. Bxd5 cxd5 22. Ra5 e4 23. Qb3 Qg4 24. Nf4 Nc7 25. Nxd5 Nxd5 26. Rxd5 Qe6 27. b5 Bf8 28. Bc3 h5 29. h4 Be7 30. Ba5 Rc8 31. Bd2 Rb8 32. Ba5 Rc8 33. Bd2 1/2-1/2