[Event "Great Plains Open"] [Site "Lincoln, NE"] [Date "2022.11.16"] [Round "1"] [White "Lebouef, Maria"] [Black "Chen, Megan"] [Result "0-1"] [WhiteElo "1389"] [BlackElo "1815"] [Annotator "Lang, JJ"] [Variant "Standard"] [ECO "B33"] [Opening "Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation"] [Source "https://lichess.org/study/Kvfo9Uhx/KMI8VXG4"] [Orientation "white"] { [%evp 0,102,29,26,43,38,33,31,20,27,48,43,40,40,34,18,11,-10,14,9,17,5,-10, -11,8,10,29,-13,8,-4,-10,17,11,-4,0,18,104,0,16,16,49,58,58,54,45,53,61,55,63, 70,96,99,141,73,115,46,44,28,121,38,84,-5,7,-7,1,0,24,30,31,33,35,21,17,-6,-5, -24,-15,-4,-17,-4,0,0,0,-124,-129,-124,-117,-123,-128,-152,-160,-165,-158,-158, -160,-243,-291,-1022,-1038,-1046,-1019,-1054,-1087,-1087,-1087] } 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 O-O 13. Ncxb4?! (13. g3 a5 (13... Bg5 14. Bg2 Qa5 15. O-O Qc5 16. b3 a5 17. Kh1 a4 18. Qe2 Be6 19. Nc7 axb3 20. axb3 Rxa1 21. Rxa1 Na5 22. Na6 Qb6 23. Naxb4 Nxb3 24. Rd1 Rc8 25. h4 Bd8 26. Nd5 Qa6 27. Nde3 g6 28. Qd3 Bxc4 29. Qxd6 Qxd6 30. Rxd6 Be6 31. Kh2 Ba5 32. Bh3 Bxh3 33. Kxh3 Nd2 34. Rd5 Bc3 35. Ng4 Nxe4 36. f3 Nc5 37. Nxe5 Bxe5 38. Rxe5 Nd3 39. Re2 Rc3 40. Ne3 { ½-½ (40) Caruana,F (2808)-Mamedov,R (2657) Baku AZE 2015 }) 14. Bg2 Bg5 15. O-O Be6 16. Qd3 Bxd5 17. cxd5 Nb8 18. a3 Na6 19. axb4 Nxb4 20. Nxb4 axb4 21. h4 Bh6 22. Ra6 (22. Qc4 b3 23. Qxb3 Rb8 24. Qc2 Qb6 25. Rfb1 Rfc8 26. Qe2 Qb4 27. Ra6 Rb6 28. Rxb6 Qxb6 29. b4 g6 30. Qd3 Kg7 31. Bh3 Rc7 32. Bf1 Bc1 33. Rb3 h5 34. Qa6 Rb7 35. Qxb6 Rxb6 36. b5 Kf6 37. Bh3 Bd2 38. Bd7 Ke7 39. Bc6 Ba5 40. Ra3 Bb4 41. Ra7+ Kf8 42. Ra8+ Ke7 43. Kg2 Bc5 44. f3 Kf6 45. g4 Kg7 46. Kf1 Kf6 47. Ke2 Ke7 48. g5 Bd4 49. Re8# { 1-0 (49) Sevian,S (2666)-Nihal,S (2598) chess.com INT 2019 }) 22... Rxa6 23. Qxa6 Qc7 24. Ra1 Qc5 25. Qc6 Qd4 26. Qc2 g6 27. Rd1 Qb6 28. Ra1 Qd4 29. Rd1 Qb6 30. Ra1 Qd4 31. Rd1 Qb6 { ½-½ (31) Swiercz,D (2637)-Mamedov,R (2680) Kocaeli TUR 2017 }) 13... Nxb4 14. Nxb4 Qb6 15. Qb3 Rb8 16. Nd5 Qa5+ (16... Qxb3 17. axb3 Rxb3 18. O-O-O Be6 19. Nxf6+ gxf6 20. Rxd6 Rfb8 { Black should have compensation for the pawn here, but not more. }) 17. Qc3 Bd8?! (17... Qxc3+! 18. bxc3 Rb2 19. h4 Bd8 20. Ne3 Ba5 21. Nd1 Rb6 22. Kd2 Be6 23. Rc1 f5 24. exf5 Bxf5 25. Bd3 Be6 26. f3 d5 27. cxd5 Bxd5 28. Rc2 Rd6 29. Ke2 Rfd8 30. Nf2 Bf7 31. c4 Rd4 32. c5 e4 33. fxe4 Bh5+ 34. Ke3 Bf7 35. Rd1 Bc7 36. Be2 Rxd1 37. Nxd1 Bh2 38. Kf2 Bg6 39. Nc3 Be5 40. c6 Bd4+ 41. Ke1 Be5 42. Bf3 Bg3+ 43. Ke2 Rd4 44. Nd1 Bc7 45. Ne3 Kf8 46. Rb2 Bxe4 47. Rb7 Bf4 48. g3 Bxg3 49. Bxe4 Rxe4 50. Kf3 Re8 51. Nc4 Bh2 52. Ra7 Rc8 53. Rxa6 Ke7 54. Ke4 Ke6 55. a4 h5 56. a5 Bg1 57. c7+ Ke7 58. Nb6 Bxb6 59. axb6 Kd7 60. b7 Re8+ 61. Kf5 Kxc7 62. Ra8 g6+ 63. Kf6 { 1-0 (63) Kadric,D (2418)-Al Sulaiti, G (2178) Istanbul TUR 2012 }) 18. b3 Qxc3+ 19. Nxc3 Ba5 20. Rc1 f5 21. exf5 Bxf5 22. Be2 Bb4 23. O-O Ba3 24. Rcd1 Bb2 25. Nd5 Bd7 26. Bf3? (26. c5! { White misses an important tactical opportunity to play a thematic break. } 26... Bb5 27. Bxb5 axb5 28. cxd6 $18) 26... a5 27. Rfe1 Bd4 28. Ne3 a4 29. Rb1 Be6 30. Bd5? { In a rush to trade, White loses her advantage. } (30. bxa4 Rxb1 31. Rxb1 Rc8 32. a5 { White has too many pawns. }) 30... Bxd5 31. cxd5 (31. Nxd5? Bxf2+ { Did White miss that she could not recapture with the knight because of this move? }) 31... axb3 32. Rxb3 Rxb3 33. axb3 { With the d-file closed and the b-pawn isolated, Black has admirably fought back to obtain more activity in the endgame. } 33... Rb8 34. Rb1 Kf7 35. b4 Rb5 36. Nc4 Bc5 37. Ne3 Rxb4 (37... Ke7 { Do not hurry! }) 38. Rxb4 Bxb4 39. f3 Kf6 40. Kf2 Kg5 41. Kg3?? { A common type of mistake for young players in the endgame. White takes the opposition, which is supposed to be good in endgames. But, she forgets to ask whether she can keep it (no!) or where she wants her king to be (not on h3!). } 41... Be1+ 42. Kh3 Kf4 43. Nc4 Bb4! { A strong move. White might have mistakenly thought that tying Black's bishop down to her backwards pawn would be a victory. But now she is unable to make progress against Black's plan of advancing ...e5-e4 and winning the d-pawn! } 44. Kh4 e4 45. fxe4 Kxe4 46. Nb6 Bc5 47. Na4 Kxd5 48. Nxc5 dxc5 49. Kg3 Kd4 50. Kf2 Kd3 51. Ke1 Kc2 { 0-1 Black wins. } 0-1