[Event "Korchnoi - Petrosian Candidates Quarterfinal"]
[Site "Il Ciocco ITA"]
[Date "1977.03.23"]
[EventDate "1977.02.28"]
[Round "9"]
[Result "1/2-1/2"]
[White "Viktor Korchnoi"]
[Black "Tigran Vartanovich Petrosian"]
[ECO "E06"]
[WhiteElo "2645"]
[BlackElo "2645"]
[PlyCount "85"]

1. c4 e6 2. g3 d5 3. Nf3 Nf6 4. Bg2 Be7 5. d4 O-O 6. Nc3 dxc4
7. Ne5 c5 8. dxc5 Qxd1+ 9. Nxd1 Bxc5 10. Nxc4 Nc6 11. Be3 Bb4+
12. Bd2 Bxd2+ 13. Nxd2 Bd7 14. Nc4 Rfd8 15. Nc3 Kf8 16. Nd6
Rab8 17. O-O-O Ne8 18. Nde4 Ke7 19. Nc5 Nf6 20. Nxd7 Rxd7
21. Rxd7+ Nxd7 22. Rd1 Rc8 23. b3 Ndb8 24. Kb2 Rd8 25. Rxd8
Kxd8 26. Nb5 Kd7 27. Kc3 a6 28. Nd4 b6 29. Nf3 h6 30. Nd2 Kc7
31. f4 Nd7 32. Bf3 b5 33. b4 Nb6 34. a3 Na4+ 35. Kd3 Ne7
36. Bh5 f6 37. Bg4 Kd7 38. Bh3 Nc8 39. e4 Ne7 40. Nf3 Nc6
41. e5 Nb2+ 42. Kc3 Na4+ 43. Kd3 1/2-1/2