He tried 1e4 e5 2Nc3 Vienna Opening and reached a winning position after 16 moves.
Nakamura tried to play too quickly and spent no time on 12..Bd5?? which loses by force. Instead Dubov invested 30 seconds into playing 12Bd5! which was a strong move and not the natural and obvious 12Nf4.
He saw this would cause problems for Black who hasn't castled. Nakamura failed to sense this was already a key moment and had to solve his issue around being behind in development.
Dubov-Nakamura Final Game 5- 3/6/2020
1. e4 e5 2. Nc3 Nc6 3. g3 Bc5 4. Bg2 Nf6 ( 4... d6 5. Nge2 h5!? 6. h3 a6 7. d3 Be6 8. O-O Qd7 9. Kh2 Nge7 10. Nd5 Nd4 11. Nxd4 Bxd4 12. c3 Ba7 13. f4 f6 14. Nxe7 Qxe7 15. d4 O-O-O 0-1 (48) Artemiev,V (2746)-Aronian,L (2758) chess.com INT 2019 ) 5. Nge2 d6 6. d3 a6 7. O-O ( 7. h3 h6 8. O-O O-O ) 7... Be6 ( 7... h5!? 8. Bg5 h4 9. gxh4 Ne7 ) 8. h3 h6 9. Kh2 to prepare f4! 9... d5 ( 9... g5 10. Nd5 g4 11. h4 ) ( 9... Qd7 10. f4 ) ( 9... O-O 10. f4 ) ( 9... Nd4 ) 10. exd5 Nxd5 11. f4!? exf4? ( 11... O-O? 12. f5! ) ( 11... Nxc3 12. bxc3 Bd5 13. Bxd5 Qxd5 14. fxe5 O-O-O 15. d4 ) ( 11... Nde7 12. fxe5 ) 12. Bxd5! [#] played after a 30seconds thought, Dubov had only 5 minutes in this armageddon game ( 12. Nxf4 Nxf4 13. Bxf4 O-O 14. Qh5 ) 12... Bxd5?? played at tempo. at times Hikaru focuses too much on the clock while Dubov tried to understand the position ( 12... fxg3+ 13. Nxg3 Bxd5 14. Qh5 Ne7 15. Nxd5 Qxd5 16. Qxd5 Nxd5 17. Rf5! O-O-O 18. c4! Winning the Bishop in c5 18... Nb4 19. Rxc5 f6 20. Rf5 Nxd3 21. b3 Nxc1 22. Rxc1 +/- ) 13. Nxf4 +- White is winning here 13... Ne7 15 seconds on this move 14. Qh5!? ( 14. Nfxd5 Nxd5 15. Qh5 wins a piece 15... O-O ( 15... Ne7 16. Qxc5 ) 16. Nxd5 ) 14... c6 45 seconds on 14..c6: Hikaru realizes his position is close to lost. 15. Ncxd5 cxd5 16. Ne6! [#] played after 5 seconds: Dubov accelerates as he has rightly identified the critical moment. 16... Qd6 ( 16... g6 17. Qe5 fxe6 18. Qxh8+ +- ) 17. Nxg7+ Kd7 18. Rxf7 Raf8 19. Bf4 Rxf7 best practical chance for Black is to give up the queen 20. Bxd6 Rf2+ 21. Kh1 Bxd6 22. Re1 White needs to convert, there is no increment in this blitz game. Nakamura tried to stay in the game somehow ( 22. Qg4+ ) 22... Rhf8 23. Qg4+ Kc6 24. Ne6 R8f6 25. Nd4+ Kb6 26. Re2 Rf1+ 27. Kg2 Nc6 28. Nxc6 bxc6 29. c3 R1f5 30. b4 Kb7 31. Qg7+ Rf7 32. Qxh6 Bc7 33. Qe3! Bb6 34. d4 Bc7 35. h4 a5 36. a3 a4 37. Qd3! idea is b4-b5, Black tried to close lines around his king but the white queen is too strrong. Dubov did a good job securing his king with Qe3 Re2 and h4. 37... Rf1 38. b5 R1f6 39. bxc6+ Kxc6 40. Qa6+ Bb6 41. Qxa4+ Kb7 42. Qe8 threatens Re7+ 42... Rf8 43. Re7+ Bc7 44. Qb5+ Rb6 45. Rxc7+! followed by Qc5+ double attack winning the rook on f8.Hikaru resigned. Dubov won the Lindores Abbey Rapid in the Armageddon (5th game) on the 3rd match. This was an exciting online tournament on chess24.com;#heritagechess 1-0
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