Kortschnoj, Viktor Lvovich VS Petrosian, Tigran V 1980.03.??

[Event "Candidates qf Kortschnoj-Petrosian +2-0"]
[Site "Velden"]
[Date "1980.03.??"]
[Round "7"]
[White "Kortschnoj, Viktor Lvovich"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]
[WhiteElo "2695"]
[BlackElo "2615"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 e6 5. b3 Nbd7 6. Bb2 e5 7. d4 e4 8. Nd2 Be7 9. a3 O-O 10. b4 Re8 11. c5 Nf8 12. Be2 Qd7 13. Qc2 Qf5 14. f4 g5 15. g3 gxf4 16. gxf4 Qh3 17. Rg1+ Ng6 18. Nf1 Qh4+ 19. Ng3 Ng4 20. Bxg4 Bxg4 21. Qf2 Qh3 22. Nce2 Nh4 23. O-O-O Kh8 24. Nxe4 Qf3 25. Qxf3 Bxf3 26. N4g3 Bf6 27. Rd3 Re7 28. Bc3 Rae8 29. Bd2 h6 30. Rf1 Kh7 31. Rb3 Bg4 32. Rf2 Nf3 33. h3 Nxd2 34. Kxd2 Bxh3 35. Nh5 Bh8 36. f5 Rg8 37. Neg3 Bg4 38. Rb1 1/2-1/2