[Event "Chigorin Memorial-14"]
[Site "Sochi"]
[Date "1980.09.11"]
[Round "6"]
[White "Knaak, Rainer"]
[Black "Zaitsev, Igor A"]
[Result "1-0"]
[WhiteElo "2535"]
[BlackElo "2190"]

1. d4 Nf6 2. c4 g6 3. Nc3 d6 4. e4 Bg7 5. f3 O-O 6. Be3 Nc6 7. Nge2 e5 8. d5 Na5 9. Qd3 c5 10. g4 h5 11. h3 a6 12. Bg5 b5 13. cxb5 axb5 14. Nxb5 Qb6 15. Nec3 Nb3 16. Rd1 Nd4 17. Be2 Bd7 18. a4 Nh7 19. Bh4 f5 20. gxf5 gxf5 21. exf5 Bxf5 22. Qc4 Bc2 23. Rd2 Rf4 24. Nxd4 cxd4 25. Rxc2 dxc3 26. Qc6 Qxc6 27. dxc6 Rxh4 28. Rxc3 Rhxa4 29. Kf2 d5 30. Rhc1 e4 31. Rb3 Bd4+ 32. Kg2 Rc8 33. fxe4 dxe4 34. c7 Ba7 35. Bb5 Ra5 36. Bd7 Rg5+ 37. Kh2 Bg1+ 38. Kh1 Rxc7 39. Rxc7 e3 40. Be6+ 1-0