[Event "ch-USA 2022"] [Site "https://lichess.org/study/dfRDZs7P/4EG6n6uG"] [Date "2022.10.12"] [Round "7.2"] [White "Swiercz, Dariusz"] [Black "Niemann, Hans Moke"] [Result "1-0"] [WhiteElo "2652"] [WhiteTeam "United States"] [BlackElo "2699"] [BlackTeam "United States"] [Annotator "Watson,John"] [Variant "Standard"] [ECO "E11"] [Opening "Bogo-Indian Defense: Retreat Variation"] [StudyName "2022 U.S. Championships"] [ChapterName "Swiercz, Dariusz - Niemann, Hans Moke"] [Source "https://lichess.org/study/dfRDZs7P/4EG6n6uG"] [Orientation "white"] 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 O-O 7. O-O Nbd7 8. Qc2 c6 9. Rd1 b6 10. b3 a5 11. Bc3 Bb7 12. Nbd2 Qc7 13. Rac1 Rac8 14. Qb1 c5 15. cxd5 Bxd5 16. e4 Bb7 17. Bb2 Qb8 18. e5 Nd5 19. Nc4 (19. dxc5 { allows } 19... Nxc5 (19... Rxc5!? 20. Nc4 Rd8) 20. Nc4 Rfd8 { , since } 21. Nd6?! { doesn't work well here after } 21... Bxd6 22. exd6 (22. Ng5?? Bxe5 23. Qxh7+ Kf8 { -compare the game }) 22... Qxd6 23. Ng5 f5! 24. Re1 Re8 { and White the bishop pair but not enough compensation for the pawn. }) 19... Qa8? { Still playing quickly, but failing to protect against White's tactical ideas after Nc4-d6. } (19... h6 { is one move(versus Ng5) and another is }) (19... Rfd8 { , since } 20. dxc5 Nxc5 21. Nd6?! { is again better for Black after } 21... Bxd6 22. exd6 Qxd6 23. Ng5 f5) 20. dxc5! Nxc5?? { A huge mistake. } (20... bxc5 { , Dominguez mentioned } 21. Nfd2 (21. Nd6 Rb8!?)) 21. Nd6 Bxd6? (21... Rb8 22. Nd2! Bc6 23. N2e4 Nxe4 24. Qxe4 { with space and attack. }) (21... Rcd8 { might be best: } 22. Nxb7 Qxb7 23. Nd4 $16) 22. Ng5 g6? { Niemann seems to be giving up here. To play on, he had to try } (22... f5 23. exd6 (23. exf6 g6 24. Rc4! { is good, but at least Black can play on }) 23... Rce8 { , when } 24. Re1! Qc8 25. Rxc5! bxc5 26. Qd1! { is the most convincing path, threatening Nxe6 and Bxd5. }) 23. exd6 Qb8 24. Rc4! (24. Nxh7! { also won on the spot: } 24... Kxh7 25. Rc4 f5 (25... f6 26. Rh4+ Kg7 27. Rg4! $18) 26. Rh4+ Kg8 27. Qc1 { and Qg5 or Qh6 follows. }) 24... h6 (24... Qxd6 25. Rh4 Qe7 26. Rxd5! Bxd5 27. Rxh7 e5 28. Qxg6+! fxg6 29. Bxd5+ Rf7 30. Rxf7 Qxf7 31. Bxf7+ Kg7 32. Bc4 $18) 25. Nxe6 { Simplifying. } (25. Rh4 { wins right away. }) 25... Nxe6 26. Bxd5 Bxd5 27. Rxd5 Qb7 (27... Rxc4 28. bxc4 Rd8 29. d7 b5 30. Bf6) 28. d7 { 1-0 White wins. } 1-0