[Event "Candidates qf Kortschnoj-Petrosian +2-1"]
[Site "Ciocco"]
[Date "1977.??.??"]
[Round "1"]
[White "Kortschnoj, Viktor Lvovich"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]
[WhiteElo "2645"]
[BlackElo "2645"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. O-O O-O 6. d4 dxc4 7. Ne5 Nc6 8. Bxc6 bxc6 9. Nc3 c5 10. dxc5 Bxc5 11. Qa4 Nd5 12. Ne4 Nb6 13. Qc2 Be7 14. Nxc4 Nxc4 15. Qxc4 Qd5 16. Qc2 Bb7 17. f3 Qd4+ 18. Kg2 Bxe4 19. Qxe4 Qxe4 20. fxe4 Rfb8 21. b3 Bd6 22. Bf4 1/2-1/2