[Event "Grand Prix Hamburg 2019"] [White "Duda, Jan-Krzysztof"] [Black "Grischuk, Alexander"] [Site "Hamburg"] [Round "4.2"] [Annotator ""] [Result "1/2-1/2"] [Date "2019.11.16"] [WhiteElo "2734"] [BlackElo "2759"] [PlyCount "75"] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 0-0 6. e3 Nbd7 7. Rc1 c5 { D37: Queen's Gambit Declined: 5 Bf4} 8. dxc5 {Nxc} Nxc5 9. cxd5 {Nxd} Nxd5 10. Nxd5 exd5 11. a3 Bd7 {} (11... Bg4 12. Be2 Ne6 13. Be5 Bf6 14. Bxf6 Qxf6 15. Qd2 {½-½ (34) Bogdanovich,S (2590)-Nguyen,N (2649) Ho Chi Minh City 2016} )12. Qxd5 Rc8 {} ({Predecessor:} 12... Be6 {} 13. Qxd8 Rfxd8 14. Be2 Nb3 15. Rc7 {1-0 (43) Teske,H (2537)-Weiler,D (2165) Frankfurt 2012} )13. e4 Qb6 (13... Qe8 {} 14. Nd4 Rd8 )14. b4 {Rfd} Rfd8 (14... Be6 {} 15. Qd4 (15. bxc5 {} Bxc5 16. Rxc5 Bxd5 {} )Rfd8 {} )15. bxc5 {Bxc} Bxc5 16. Be2 {} Bb5 17. Rxc5 {Rxc} Rxc5 18. Qb3 {Qc} Qc6 19. Be3 {Bxe} Bxe2 20. Bxc5 Bxf3 21. Qxf3 {Qxc} Qxc5 22. 0-0 b5 23. h4 h6 24. Rb1 a6 25. Rb3 Qe5 26. g3 Rd4 27. Re3 {} a5 28. Qg4 b4 29. axb4 axb4 30. Qc8+ Kh7 31. Qb7 f6 32. Kg2 {Rc} Rc4 33. Qd5 {Qxd} Qxd5 34. exd5 Rd4 35. Rb3 Kg6 36. Kf3 h5 37. Ke3 {} Rxd5 38. Rxb4 1/2-1/2