[Event "URS-ch17 Semifinal"]
[Site "Leningrad"]
[Date "1949.??.??"]
[Round "2"]
[White "Levenfish, Grigory"]
[Black "Koblencs, Aleksandrs"]
[Result "1/2-1/2"]

1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. Be3 c4 10. Ne5 Be6 11. Nxc4 dxc4 12. d5 Nxd5 13. Nxd5 Rc8 14. Nxe7+ Qxe7 15. Qa4 Qf6 16. Qb5 Nd4 17. Bxd4 Qxd4 18. Rfd1 Qc5 19. Qxc5 Rxc5 20. a4 1/2-1/2