[Event "Candidates qf Kortschnoj-Petrosian +2-0"]
[Site "Velden"]
[Date "1980.03.08"]
[Round "1"]
[White "Kortschnoj, Viktor Lvovich"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]
[WhiteElo "2695"]
[BlackElo "2615"]

1. c4 Nf6 2. d4 c6 3. e3 d5 4. Bd3 g6 5. Nf3 Bg7 6. Nc3 O-O 7. O-O Bg4 8. h3 Bxf3 9. Qxf3 e6 10. Rd1 Nbd7 11. Bf1 Re8 12. b3 a6 13. Bb2 Qe7 14. Rac1 Rad8 15. Qe2 h5 16. Qc2 Nb6 17. Bd3 Nc8 18. Nb1 Nh7 19. Ba3 Qc7 20. Nd2 Nb6 21. Nf3 Nd7 22. Bb4 Nhf6 23. Bc3 Nh7 24. Be1 Rc8 25. b4 Nhf6 26. Qb3 Qb8 27. a4 Red8 28. Bc3 Qc7 29. c5 Nh7 30. b5 axb5 31. axb5 e5 32. b6 Qb8 33. e4 exd4 34. Bxd4 Bxd4 35. Nxd4 Qf4 36. Ne2 Qf6 37. exd5 cxd5 38. Qb4 Qe7 39. Nd4 Nhf6 40. Re1 Qf8 41. Bxg6 fxg6 42. Ne6 Qe7 43. Qb1 Re8 44. Nc7 Qf7 45. Nxe8 Nxe8 46. c6 bxc6 47. b7 Rb8 48. Rxc6 Ndf6 49. Rb6 Ne4 50. Rxe4 dxe4 51. Qxe4 Kh7 52. Qc6 Qf6 53. Qd7+ Qg7 54. Qe6 Qf6 55. Qe3 Nd6 56. Qg3 h4 57. Qxd6 Qxd6 58. Rxd6 Rxb7 59. Kf1 Kh6 1/2-1/2