[Event "Quebec op"]
[Site "Montreal"]
[Date "1980.08.05"]
[Round "3"]
[White "Ivanov, Igor Vasilievich"]
[Black "Duchesne, Guy"]
[Result "1-0"]
[ECO "D57"]
[WhiteElo "2452"]
[BlackElo "1701"]
[PlyCount "111"]
[EventDate "1980.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 h6 6. Bh4 0-0 7. Nf3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 Rd8 12. a4 Nc6 13. Be2 b6 14. 0-0 Bf5 15. Bb5 Na5 16. Qb4 Qd6 17. Ra3 c6 18. Qxd6 Rxd6 19. Be2 f6 20. Nd2 Rc8 21. f3 c5 22. e4 Be6 23. e5 fxe5 24. dxe5 Rdd8 25. f4 g6 26. Nf3 d4 27. cxd4 cxd4 28. Rd1 Bc4 29. Bd3 Bb3 30. Rd2 Rc1+ 31. Kf2 Kg7 32. g4 Bc4 33. f5 gxf5 34. gxf5 Rc3 35. f6+ Kf8 36. Nxd4 Rxa3 37. Bxc4 Nxc4 38. Ne6+ Ke8 39. Nc7+ Kf7 40. e6+ Kxf6 41. Rxd8 Ra2+ 42. Kg3 Re2 43. Rd4 Na5 44. Nd5+ Kg7 45. Nf4 Re5 46. Rd7+ Kg8 47. Rxa7 Nc6 48. Rb7 Re3+ 49. Kg4 Re4 50. Rxb6 Ne7 51. a5 Nd5 52. Rb8+ Kg7 53. Rb7+ Kg8 54. Kf5 Rxf4+ 55. Ke5 Rg4 56. a6 1-0

