[Event "Grand Prix Hamburg 2019"] [White "Grischuk, Alexander"] [Black "Duda, Jan-Krzysztof"] [Site "Hamburg"] [Round "4.5"] [Annotator "ChessBase"] [Result "1-0"] [Date "2019.11.17"] [WhiteElo "2759"] [BlackElo "2734"] [PlyCount "119"] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Bd3 Nbd7 6. b3 b6 7. 0-0 Bb7 8. Bb2 dxc4 9. bxc4 c5 10. d5 exd5 11. cxd5 Bxd5 12. e4 Bc6 13. Re1 Qe7 14. Nc3 0-0-0 15. Nd5 Qe8 16. a4 Bd6 17. Ba6+ Kb8 18. Qb3 Nxe4 19. a5 Bc7 20. axb6 axb6 21. Bb5 Bb7 22. Qa4 Qe6 23. Bc6 Bxh2+ 24. Nxh2 Qxc6 25. Qa7+ Kc8 26. Ne7+ Kc7 27. Nxc6 Ra8 28. Rxe4 Rxa7 29. Rxa7 Kxc6 30. Re7 Rd8 31. Nf3 b5 32. Rxf7 b4 33. Rxg7 Kb6 34. Ra1 Bxf3 35. gxf3 Nf8 36. Rg8 c4 37. Bg7 Ne6 38. Rxd8 Nxd8 39. Rc1 Kb5 40. f4 Ne6 41. Be5 Nc5 42. Kf1 Nd3 43. Rd1 Kc5 44. Ke2 Kd5 45. Rh1 Nc5 46. Rxh7 c3 47. Bxc3 bxc3 48. Rc7 c2 49. Kd2 Ne4+ 50. Kxc2 Nxf2 51. Kd2 Ke4 52. Ke2 Ng4 53. Rc4+ Kf5 54. Kf3 Nh2+ 55. Kg2 Ng4 56. Kg3 Ne3 57. Rc5+ Kf6 58. Kf3 Nf5 59. Ra5 Kg6 60. Ra6+ 1-0