[Event "Chigorin Memorial-09"]
[Site "Sochi"]
[Date "1973.??.??"]
[Round "10"]
[White "Krogius, Nikolai V"]
[Black "Filip, Miroslav"]
[Result "1/2-1/2"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. e3 e6 5. d4 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 b4 9. Na4 c5 10. O-O cxd4 11. Nxd4 Bb7 12. a3 bxa3 13. bxa3 Be7 14. Bd2 O-O 15. Bb4 Nb6 16. Nxb6 axb6 17. Bxe7 Qxe7 18. Qb3 Nd7 19. Be2 1/2-1/2