[Event "U.S. Championship"] [Site "https://lichess.org/study/iLDop9iy/w4gotUAf"] [Date "2021.10.08"] [Round "3.1"] [White "Swiercz, Dariusz"] [Black "Naroditsky, Daniel"] [Result "1-0"] [WhiteElo "2647"] [BlackElo "2623"] [Annotator "Watson"] [Variant "Standard"] [ECO "B76"] [Opening "Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line"] [Source "https://lichess.org/study/iLDop9iy/w4gotUAf"] [Orientation "white"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. O-O-O d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Bd4 e5 13. Bc5 Re8 14. Ne4 Qc7 { A major theoretical line. } 15. h4 f5 { This eventually leads to a difficult ending which both sides should know in detail. } (15... h6 { and }) (15... Rd8 { are known options }) 16. Nd6 Rd8 17. Nxc8 Raxc8 18. h5 (18. Bc4 { has also been played, when } 18... h5 19. g4 Kh7) 18... Nb6 19. Bxb6 Rxd2 (19... axb6 20. Bc4+ Kf8 21. Qb4+ c5 22. Qb5 $14 Rxd1+ 23. Rxd1 Rd8 24. Rxd8+ Qxd8 25. a4 $14 { leaves Black with work to do, although he is probably within drawing range. }) 20. Bc4+ Kf8 21. Bxc7 Rxd1+ 22. Rxd1 Rxc7 23. hxg6 Bh6+ 24. Kb1 hxg6 25. Rd6 Kg7 26. b4 Bf4 27. Re6 { All this has been played before. White has the chances, but one feels that Black should hold. } 27... Rb7! { Forcing the pace. } (27... Bd2!? 28. a3 a5 29. bxa5 Bxa5 30. Rxe5 Bc3 { was Van Foreest,J (2701)-Abasov,N (2665), Prague 2021, when } 31. Re6! { would have kept pressure on Black. }) 28. a3 a5! 29. Kb2 (29. Ka2 axb4 30. a4 Ra7 31. Kb3 c5 { , transposing. }) (29. c3 a4 30. Bd3 Rc7) 29... axb4 30. a4 Ra7 31. Kb3 c5 { A fascinating ending. One feels that Black should hold but he'll have to play accurately. } 32. Bb5 (32. Bd3 Kf7 33. Rb6 Ra5 34. Bc4+ Kg7 35. Bb5 e4!? (35... Kf7!) 36. fxe4 fxe4 37. Re6 e3 38. Kc4 Ra7 39. Kxc5 (39. Re4) 39... Rc7+ 40. Bc6 Kf7 41. Re4 { and here } 41... Bg5! { holds, e.g., } 42. Kb6 Re7) 32... Kf7 33. Bc4 (33. Rb6!?) 33... Kg7 34. Bd3 Bg3 (34... Kf7 { is Kollars-Blomqvist again. }) 35. Rc6 Ra5 (35... Bf2! { seems to do the trick. Then if } 36. g4!? { , } 36... c4+! 37. Rxc4 (37. Bxc4 e4) 37... e4 38. Be2 exf3 39. Bxf3 fxg4 40. Rxg4 Be1 41. Be4 Rc7 42. Rxg6+ Kf7) 36. Bb5 Ra7?! (36... Bf2!) 37. Rxc5 e4 38. fxe4 fxe4 39. Rc6 Rc7 (39... e3 40. Re6 Bf2 41. Kxb4) 40. Kxb4 Rxc6?! { I think this should lose, but } (40... Be1+ 41. c3 Rxc6 42. Bxc6 e3 43. Bf3 { may not be much better. }) 41. Bxc6 e3 42. Bf3 Kf6 43. a5?! { This is a very difficult ending and I'm not sure about everything, but I'll indicate some important junctures. Here } (43. Kc5! { is a lot smoother, e.g., } 43... Ke7 44. Kc6 Kd8 (44... Be1 45. Kb6 Bc3 46. a5) 45. a5 Kc8 46. c4 Kb8 47. c5 Be1 48. a6 Bg3 49. Kd7 $18) 43... Ke7 44. Kc5 Kd7 45. a6 Kc7 46. Kd5 (46. c4!) 46... Kb6 47. Be2 Bh4 48. Ke6 Bd8 (48... Kc7 49. Kf7 g5 50. Kg6 Kb6 51. Kf5 Ka7 52. Kg4 Bf2 (52... Kb6 53. g3) 53. Kxg5) 49. Kf7 (49. Kd7! Bf6 50. c4) 49... g5 50. Kg6 Ka7 51. Kf5 Be7 52. Ke4 Bc5 53. Kd5 Bb6? (53... Be7 54. Ke6 Bb4 55. Kf5 Be7) 54. c4! Kb8 (54... Kxa6 55. c5+) 55. c5 { Now White wins. } 55... Ba7 (55... Ba5 56. Kc6 Bd8 57. Kd7 Ba5 58. c6 Bb6 59. c7+ Bxc7 60. a7+ Kxa7 61. Kxc7) 56. Kd6 Kc8 57. Bg4+ Kd8 58. c6 Bb8+ 59. c7+! { 1-0 Black resigns. } (59... Bxc7+ 60. Kc6 Bb8 61. Kb7 $18) 1-0