[Event "Candidates qf1"] [Site "Ciocco"] [Date "1977.??.??"] [Round "3"] [White "Kortschnoj, Viktor"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [GameId "biy0xImr"] [WhiteElo "2645"] [BlackElo "2645"] [Variant "Standard"] [TimeControl "-"] [ECO "E05"] [Opening "Catalan Opening: Open Defense, Classical Line"] [Termination "Normal"] [Annotator "lichess.org"] 1. c4 { [%eval 0.0] } 1... e6 { [%eval 0.08] } 2. g3 { [%eval 0.07] } 2... d5 { [%eval 0.12] } 3. Bg2 { [%eval 0.04] } 3... Nf6 { [%eval 0.39] } 4. Nf3 { [%eval 0.13] } 4... Be7 { [%eval 0.28] } 5. d4 { [%eval 0.07] } 5... dxc4 { [%eval 0.23] } { E05 Catalan Opening: Open Defense, Classical Line } 6. Nc3 { [%eval -0.06] } 6... O-O { [%eval 0.07] } 7. Ne5 { [%eval -0.08] } 7... c5 { [%eval 0.08] } 8. dxc5 { [%eval 0.1] } 8... Qxd1+ { [%eval 0.19] } 9. Nxd1 { [%eval 0.1] } 9... Nbd7 { [%eval 0.28] } 10. Nxc4 { [%eval 0.31] } 10... Nxc5 { [%eval 0.25] } 11. Nc3 { [%eval 0.28] } 11... Bd7 { [%eval 0.32] } 12. Na5 { [%eval 0.0] } 12... Nd5 { [%eval 0.52] } 13. Nxd5 { [%eval 0.37] } 13... exd5 { [%eval 0.5] } 14. Bxd5 { [%eval 0.46] } 14... Rac8 { [%eval 0.47] } 15. O-O { [%eval 0.3] } 15... b6 { [%eval 0.29] } 16. Nc4 { [%eval 0.13] } 16... Be6 { [%eval 0.67] } 17. Ne3 { [%eval 0.78] } 17... Rfd8 { [%eval 0.77] } 18. Rd1 { [%eval 0.74] } 18... h5 { [%eval 0.85] } 19. b3 { [%eval 0.88] } 19... Bg5 { [%eval 0.87] } 20. f4 { [%eval 0.84] } 20... Bf6 { [%eval 0.92] } 21. Rb1 { [%eval 0.89] } 21... Bh3 { [%eval 1.34] } 22. Bb2 { [%eval 1.3] } 22... Re8 { [%eval 1.39] } 23. Kf2 { [%eval 1.35] } 23... Bxb2 { [%eval 1.43] } 24. Rxb2 { [%eval 1.39] } 24... g6 { [%eval 1.41] } 25. Rbd2 { [%eval 1.36] } 25... Rc7 { [%eval 1.41] } 26. Nc4 { [%eval 1.35] } 26... Ne4+ { [%eval 1.27] } 27. Bxe4 { [%eval 1.29] } 27... Rxe4 { [%eval 1.31] } 28. Rd8+ { [%eval 1.25] } 28... Kh7 { [%eval 1.33] } 29. Rb8 { [%eval 1.12] } 29... Ree7 { [%eval 1.14] } 30. Ne3 { [%eval 1.15] } 30... Kg7 { [%eval 1.19] } 31. Rdd8 { [%eval 1.14] } 31... Be6 { [%eval 1.28] } 32. Rg8+ { [%eval 1.0] } 32... Kf6 { [%eval 1.03] } 33. h3 { [%eval 0.69] } 33... Rc3?! { (0.69 → 1.29) Inaccuracy. Red7 was best. } { [%eval 1.29] } (33... Red7 34. Rbd8 Rxd8 35. Rxd8 Rc1 36. h4 Ra1 37. Rd2 a5 38. Nd1 b5 39. Nc3 b4 40. Ne4+) 34. Rbe8? { (1.29 → 0.00) Mistake. g4 was best. } { [%eval 0.0] } (34. g4 hxg4 35. hxg4 Rxe3 36. g5+ Kf5 37. Kxe3 Bxb3+ 38. Kf2 Bxa2 39. e3 Be6 40. Rbe8 Rxe8) 34... Rxe8 { [%eval 0.0] } 35. Rxe8 { [%eval 0.0] } 35... Rc5 { [%eval 0.0] } 36. g4 { [%eval -0.05] } 36... Ra5 { [%eval 0.0] } 37. f5 { [%eval -0.08] } 37... gxf5 { [%eval -0.08] } 38. gxf5 { [%eval -0.08] } 38... Bxf5 { [%eval -0.08] } 39. Nxf5 { [%eval -0.08] } { The game is a draw. } 1/2-1/2