[Event "URS-ch24 Semifinal"]
[Site "Tbilisi"]
[Date "1956.12.01"]
[Round "9"]
[White "Krogius, Nikolai V"]
[Black "Voronkov, Boris"]
[Result "1/2-1/2"]

1. c4 c6 2. d4 d5 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7 11. Rd1 a5 12. e4 c5 13. dxc5 Qc7 14. Bd3 Nbd7 15. Bg5 Nxc5 16. Rac1 Rac8 1/2-1/2