[Event "Chigorin Memorial"]
[Site "Sochi URS"]
[Date "1977.09.11"]
[EventDate "1977.08.31"]
[Round "9"]
[Result "0-1"]
[White "Liuben D Spassov"]
[Black "Nikolai V Krogius"]
[ECO "D37"]
[WhiteElo "2480"]
[BlackElo "2545"]
[Source "ChessBase"]
[PlyCount "86"]

1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Qa5 8. a3
dxc4 9. Bxc4 Qxc5 10. Qe2 Nc6 11. O-O Bd7 12. Rfd1 a6 13. e4 b5 14. Ba2 b4 15.
e5 bxc3 16. exf6 Bxf6 17. Rxd7 cxb2 18. Rad1 Qxa3 19. Bb1 Qa4 20. Bg5 Bxg5 21.
Nxg5 h6 22. Qd3 f5 23. Nxe6 Rf6 24. Rxg7+ Kh8 25. Qd7 Qxd1+ 26. Qxd1 Rxe6 27.
Bxf5 Kxg7 28. Bxe6 Rd8 29. Qc2 Rd2 30. Qb1 a5 31. Kf1 Nd4 32. Ba2 Rc2 33. Qd1
Rc1 34. Ke1 Nc2+ 35. Kd2 Rxd1+ 36. Kxd1 Na3 37. Kd2 Kf6 38. Kc3 b1=Q 39. Bxb1
Nxb1+ 40. Kc2 Na3+ 41. Kb3 Nb5 42. Ka4 Nc3+ 43. Kxa5 Ne4 0-1