[Event "URS-ch25 Semifinal"]
[Site "Leningrad"]
[Date "1957.11.11"]
[Round "1"]
[White "Krogius, Nikolai V"]
[Black "Poliak, Abram Borisovich"]
[Result "1/2-1/2"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Qc2 h6 8. Bh4 O-O 9. Bd3 Re8 10. Nge2 Nbd7 11. O-O Ne4 12. Bxe7 Qxe7 13. b4 Nxc3 14. Qxc3 Nf6 15. Qc5 Qxc5 16. dxc5 Nd7 17. Nd4 Ne5 18. Be2 Bg4 19. f3 Bd7 20. Rab1 b5 21. a4 bxa4 22. Ra1 a5 23. Rxa4 axb4 24. Rxb4 Ra3 25. Rb3 Rxb3 26. Nxb3 1/2-1/2