[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.06"]
[Round "1.1"]
[White "Eswaran, Ashritha"]
[Black "Sharevich, Anna"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2244"]
[BlackElo "2276"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,117,0,0,10,0,1,16,7,6,26,33,35,41,43,54,47,33,29,28,36,28,36,24,38,0,0,-4,-5,-38,-10,-6,33,29,33,22,45,42,45,44,58,57,118,120,114,110,109,109,153,79,191,107,104,101,392,448,433,441,536,520,665,377,376,369,369,364,361,361,357,364,357,357,347,349,326,343,333,325,307,284,272,278,12846,408,408,255,29983,29984,29984,29979,29978,12844,29974,29975,29989,29990,29990,29991,29995,29994,29994,29995,29997,29998]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. g3 Bd7 7. Nde2 Nf6 8. Bg2 Be7 9. O-O O-O {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack.} 10. h3 Rc8 {[#]} 11. b3 $146 ({Predecessor:} 11. g4 Ne5 12. g5 Ne8 13. f4 Ng6 14. Be3 b5 15. a3 a5 16. Qd3 Qc7 17. b4 f6 18. Nxb5 {½-½ (46) Anton Guijarro,D (2631)-Escobar Forero,A (2460) Linares 2014}) 11... Ne5 {The position is equal.} 12. a4 Bc6 13. f4 Ned7 14. Nd4 Qa5 15. Bb2 Rfd8 16. Nxc6 bxc6 17. Qe1 Qb6+ 18. Kh2 e5 19. Nd1 Re8 20. Nf2 Bf8 21. Qc3 Qb8 22. Nd3 exf4 23. Rxf4 Ne5 24. Nxe5 dxe5 25. Rf5 {[%cal Rf5e5]} Re6 26. Rd1 {[%cal Rf5e5]} (26. Rxe5 $2 Bb4 $19) 26... Rce8 27. Qe1 g6 28. Rf3 Bg7 (28... Bb4 $14 29. Qe2 Rd8) 29. Bf1 $16 Rd6 30. Bc4 Rxd1 31. Qxd1 Rd8 {[#]} 32. Qe2 (32. Bxe5 $142 $1 {[%mdl 512]} Rxd1 33. Bxb8) 32... h5 {[#]} (32... Rd7 $16 {might work better.}) 33. Bc1 (33. Bxf7+ $1 $18 {[%mdl 512]} Kxf7 (33... Kh7 34. Bc4) 34. Qc4+ {[%mdl 64] Double Attack} Ke7 35. Ba3+ Kd7 36. Qf7+ Kc8 37. Qxg7 Rd2+ 38. Kh1) 33... Rd7 34. Qf1 Nxe4 {[%mdl 8192] A mistake that costs the game.} (34... Qd8 $16 {keeps fighting.}) 35. Rxf7 $18 Rxf7 36. Qxf7+ {[%mdl 64] Double Attack} Kh7 37. Bd3 Qb4 38. c3 {[%mdl 64] Deflection} Qxc3 39. Bxe4 Qxc1 40. Qxg6+ {[%mdl 64] Double Attack} Kg8 41. Qe8+ (41. Bxc6 Qd2+ 42. Bg2 h4 $16) 41... Bf8 42. Qe6+ ({Less strong is} 42. Qxc6 Qxc6 43. Bxc6 Kf7 $16) (42. Bxc6 Qd2+ 43. Bg2 Qe2 $18) (42. Qxe5 Qd2+ 43. Bg2 Qh6 $18) (42. Qxh5 Qb2+ 43. Bg2 (43. Kh1 Bc5 $18) 43... Qxb3 $18) 42... Kh8 43. Qxe5+ Kg8 44. Qe6+ {[%mdl 64] Double Attack} (44. Qxh5 Qb2+ 45. Bg2 Qxb3) 44... Kh8 45. Qf6+ {[%mdl 64] Double Attack} (45. Bxc6 Qb2+ 46. Kh1 Qc1+ 47. Kg2 Qd2+ 48. Kf1 Qd3+ 49. Kg2 Qd2+ 50. Kf1 Qd1+ 51. Kg2 Qd2+ $16) (45. Qxc6 Qxc6 46. Bxc6 Kg7 $16) 45... Kg8 46. Qg6+ {[%mdl 64] Double Attack} ({Don't do} 46. Bxc6 Qd2+ 47. Bg2 Qe2 $18) 46... Bg7 47. h4 Qb2+ 48. Kh3 {Threatening mate with Qe6+.} Qxb3 (48... Qf6 49. Qe8+ Bf8 50. Qxh5 Qf1+ 51. Bg2 Qf6 52. Qg4+ Kf7) 49. Qe8+ (49. Qxc6 $142 {Black must now prevent Bd5+.} Qf7 50. Bd5) 49... Bf8 50. Qxh5 {[%csl Ge4][%cal Rh5h7]} ({Weaker is} 50. Qg6+ Bg7 $18) 50... Bg7 $2 (50... Qe6+ $18 51. Bf5 Qh6 52. Qg4+ Kf7 53. Qc4+ Ke8) 51. Qe8+ Bf8 52. Bf5 Qb7 53. Bd7 (53. Be6+ $142 Kg7 54. h5 Ba3 55. Qg6+ Kf8 56. Qg8+ Ke7 57. Qf7+ Kd6 58. Qxb7) 53... c5 54. Qg6+ {White mates.} Bg7 55. Qe6+ Kh7 56. Bc6 Qb8 57. Be4+ Kh8 58. Qg6 {[%csl Ge4][%cal Rg6h7]} Kg8 59. Bd5+ {Weighted Error Value: White=0.26/Black=0.57} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.06"]
[Round "1.2"]
[White "Paikidze, Nazi"]
[Black "Foisor, Sabina-Francesca"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "2374"]
[BlackElo "2205"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,99,33,25,20,11,17,29,24,31,-16,0,-22,-9,0,0,-9,-6,-33,33,0,16,1,65,52,57,57,68,72,62,37,55,32,27,21,46,0,0,0,-3,-16,0,0,0,-72,-72,-60,0,0,0,0,0,0,0,-51,-41,-56,-60,-60,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nc3 e6 3. Nge2 Nc6 4. g3 Nf6 5. Bg2 Be7 6. O-O a6 7. d4 cxd4 8. Nxd4 O-O 9. Be3 Qc7 10. Qe2 {B47: Sicilian: Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2.} Nxd4 11. Bxd4 e5 12. Be3 {White has an edge.} d6 13. f4 Be6 14. Rfd1 {[#]} Bg4 $146 ({Predecessor:} 14... Ng4 15. Nd5 Bxd5 16. Qxg4 f5 17. Qh3 exf4 18. Bxf4 Qc5+ 19. Kh1 fxe4 20. c4 Qxc4 {0-1 (30) Dahlhaus,F-Siebrecht,S (2315) Germany 1995}) 15. Bf3 Bxf3 16. Qxf3 b5 17. a3 Rfe8 ({Better is} 17... a5 $15) 18. f5 d5 19. Nxd5 Nxd5 (19... Qxc2 $11 20. Rd2 Qc4) 20. exd5 $14 e4 21. Qf2 ({Wrong is} 21. Qxe4 $2 Bc5 $19) 21... Bd6 22. c3 Re5 23. Rd2 h5 24. Kh1 Qd7 25. Rf1 Rae8 26. f6 g6 27. Rdd1 Rf5 28. Qg2 Ree5 29. Bd4 Re8 30. Rde1 (30. Be3 $11 {remains equal.}) 30... Rxf1+ $17 31. Qxf1 Qb7 (31... Bc7 $15) 32. c4 $11 bxc4 33. Qxc4 Rc8 34. Qe2 Re8 35. Be3 (35. Qc4 $11) 35... Qxd5 $15 36. Rd1 Qc6 37. Rc1 Qd5 (37... Qb7 $15) 38. Qxa6 $11 {The position is equal.} Be5 39. Qc6 Qxc6 40. Rxc6 Bxb2 {[%mdl 4096] Endgame KRB-KRB} 41. a4 {And now a5 would win.} Ra8 42. Rc4 Bxf6 43. Rxe4 Bc3 44. Rc4 Ba5 45. Bd4 Kf8 46. Bf6 Bd8 47. Bc3 Ba5 48. Bf6 Bd8 49. Bc3 Ba5 50. Bf6 {Weighted Error Value: White=0.13/Black=0.11} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.06"]
[Round "1.3"]
[White "Nemcova, Katerina"]
[Black "Zatonskih, Anna"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2331"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,61,0,-2,0,0,-2,0,-10,6,0,0,0,-2,-33,9,0,0,0,0,-1,-15,0,0,0,0,-2,42,-22,18,0,0,0,0,0,0,0,0,-36,0,-91,-79,-71,0,0,0,0,320,313,1088,1049,29994,29995]} 1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nf3 Bd6 5. Ne5 O-O 6. Nd2 c5 7. c3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} b6 8. h4 Qc7 9. h5 {The position is equal.} Nc6 10. Nxc6 Qxc6 {[#]} 11. Bxd6 $146 ({Predecessor:} 11. h6 g6 12. Qf3 Bxf4 13. Qxf4 Nd7 14. Nf3 f6 15. Qg3 c4 16. Be2 Bb7 17. O-O {1-0 (47) Naiditsch,A (2687)-Halkias,S (2585) Doha 2016}) 11... Qxd6 12. f4 a5 13. Qf3 Ba6 14. Bxa6 Rxa6 15. h6 {Strongly threatening hxg7.} g6 16. e4 {aiming for e5.} Qe7 17. e5 Nd7 18. O-O Ra7 19. Rad1 ({White should play} 19. c4 $1 $14) 19... f6 20. exf6 Nxf6 21. Rde1 cxd4 22. cxd4 Qd6 23. Re5 Re7 24. Rfe1 Nd7 (24... Qb4 $5 {[%cal Rb4d2]} 25. Qc3 Qxc3 26. bxc3 Rfe8 $11) 25. Rg5 (25. R5e3 $11 {remains equal.}) 25... Rxf4 $17 ({But not} 25... Qxf4 $6 26. Qxf4 Rxf4 27. Rxd5 $1 $11) 26. Qg3 {[#]} Ref7 (26... Nf6 $1 $17) 27. Nf3 $11 {[%cal Bd2f3,Bf3e5,Be5d3][%mdl 32]} Nf8 28. Ne5 R7f6 {[%mdl 8192]} (28... Qb4 $1 $11 {and Black is okay.} 29. Nxf7 Qxd4+ 30. Qe3 Kxf7) 29. Nd3 $18 R6f5 $2 (29... b5 30. Rg4 {[%mdl 64] Pin} (30. Nxf4 Qxf4 31. Qxf4 Rxf4 $18) 30... e5) 30. Rxf5 {[%mdl 64] Pin} Rf1+ 31. Rexf1 {Weighted Error Value: White=0.17/Black=0.65} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.06"]
[Round "1.4"]
[White "Cervantes Landeiro, Thalia"]
[Black "Yip, Carissa"]
[Result "1/2-1/2"]
[ECO "A41"]
[WhiteElo "2175"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,70,31,36,35,35,30,42,44,35,29,24,20,29,28,83,86,107,67,137,95,157,74,72,76,87,0,0,-16,-16,-14,53,0,139,135,131,127,129,117,135,126,141,97,131,125,148,143,144,151,135,152,155,147,129,8,19,19,17,0,0,0,37,0,0]} 1. d4 d6 2. c4 e5 3. d5 g6 4. e4 a5 5. Nc3 Bh6 6. Bxh6 {A41: 1 d4 d6: Tartakower System and Modern Defence.} Nxh6 7. Qd2 Ng4 8. f3 {White is slightly better.} Nf6 {[#]} 9. Bd3 $146 ({Predecessor:} 9. g4 h5 10. g5 Nfd7 11. h4 Nc5 12. Nh3 {0-1 (13) Sadykov,I (2231)-Zubarev,A (2546) Pavlodar 2013}) 9... Na6 10. Nge2 O-O 11. h4 c6 (11... h5 $11) 12. h5 $16 Bd7 13. g4 Nb4 (13... Nc5 $14) 14. Ng3 Rc8 (14... cxd5 $142 15. exd5 Nxd3+ 16. Qxd3 a4) 15. Bb1 (15. Be2 $142 $1) 15... cxd5 16. exd5 {Strongly threatening a3.} Rxc4 17. Qh6 (17. a3 $16) 17... Bxg4 $1 $11 18. hxg6 fxg6 19. fxg4 Rxg4 {[#]} (19... Qc7 $1 $11 20. Bxg6 hxg6 21. Qxg6+ Qg7 22. Qxg7+ Kxg7 23. Nf5+ Kg6) 20. Nge4 $40 {[%mdl 128] White has some attack.} ({White should play} 20. a3 $1 $14 Rf7 21. Nge2 (21. axb4 Rxg3 22. Ne2 Rg4 $11)) 20... Qe7 (20... Nh5 $11 {keeps the balance.} 21. a3 Rh4 22. Rxh4 Qxh4+ 23. Kd2 Rf2+ 24. Nxf2 Qxf2+ 25. Kd1 Qg1+ 26. Kd2 Qf2+ 27. Kd1 Qf1+ 28. Kd2 Qg2+ 29. Kc1 Qf1+ 30. Nd1 Qc4+ 31. Nc3 Qf1+ 32. Nd1 Qc4+ 33. Nc3 Qf1+) 21. Nxf6+ $16 Rxf6 22. a3 Na6 {[#]} 23. Bc2 $1 Nc5 24. O-O-O Qf7 25. Qh3 Qd7 26. Kb1 Rf2 27. Rdf1 Rgf4 28. Rxf2 Qxh3 29. Rxh3 Rxf2 30. Nb5 Rf6 31. Nc7 (31. Kc1 $16) 31... Rf1+ $11 32. Ka2 {aiming for Ne8.} Rf2 33. Kb1 {And now Ne8 would win.} Rf1+ $1 34. Ka2 {Black must now prevent Ne8.} Rf2 35. Kb1 {Hoping for Ne8.} Rf1+ $1 {Weighted Error Value: White=0.27/Black=0.21} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.06"]
[Round "1.5"]
[White "Abrahamyan, Tatev"]
[Black "Tokhirjonova, Gulrukhbegim"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "2344"]
[BlackElo "2322"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,132,-14,0,-6,16,11,33,0,0,0,0,0,33,35,27,0,27,0,0,6,96,90,127,122,152,148,155,153,161,123,128,116,129,126,168,143,145,153,137,91,143,141,130,115,110,106,140,145,125,95,95,102,110,95,97,0,76,0,97,12,0,0,57,6,10,15,83,34,47,38,33,-16,-7,-10,62,58,93,85,94,86,113,105,116,141,181,137,212,175,353,275,616,595,642,618,698,537,529,410,395,389,871,815,2045,1943,29987,390,386,385,381,362,360,0,0,-402,-407,-402,-369,-991,-983,-29978,-29979,-29979,-29980,-29980,-383]} 1. e4 c6 2. Nf3 d5 3. d3 g6 4. e5 Bg7 5. Bf4 {[#]} Qb6 $146 ({Predecessor:} 5... f6 6. Qe2 Bg4 7. Nbd2 Nd7 8. exf6 Ngxf6 9. h3 Bxf3 10. Nxf3 Qb6 11. c3 O-O {0-1 (51) Zubov,A (2854)-Kobalia,M (2687) Chess.com INT 2020}) 6. Nbd2 {B10: Caro-Kann: 2 d3 and 2 c4.} Nh6 7. Nb3 Bg4 (7... c5 {feels hotter.} 8. c3 f6 9. exf6 exf6 10. Qd2 Nf5) 8. h3 {White is slightly better.} Bxf3 9. Qxf3 Nd7 10. d4 e6 (10... a5 $5 {[%cal Ra5a4]}) 11. g4 Ng8 12. h4 f6 13. O-O-O fxe5 14. dxe5 c5 (14... Ne7 $11) 15. h5 $1 $16 O-O-O {[#]} ({Avoid the trap} 15... Nxe5 $2 16. Bxe5 Bxe5 17. Re1 $16) 16. h6 $1 {[%cal Rh6g7]} Bf8 17. c4 d4 18. Bg2 Be7 19. Kb1 Rf8 {...g5 is the strong threat.} 20. Qe4 Bd8 21. Bg3 {And now Na5! would win.} Bc7 22. f4 Ne7 23. Nc1 Nc6 24. Nd3 Na5 (24... Rf7 $142) 25. Rc1 Rhg8 26. Bh2 Nc6 27. Bh3 Ne7 28. Rhf1 a5 29. Rf2 Rf7 30. Bg3 Rgf8 31. Bh4 Kb8 32. Bg3 (32. Bxe7 $16 Rxe7 33. Rcf1) 32... Ka7 (32... Kc8 $1 $11) 33. Re2 ({White should play} 33. Bg2 $16) 33... Ng8 (33... g5 $1 $11) 34. Ne1 (34. g5 $16) 34... Nxh6 35. Nf3 Ng8 (35... Bd8 $11) 36. Ng5 (36. Rd2 $14) 36... Re7 $11 37. Bg2 Nb8 (37... h6 $11 {keeps the balance.} 38. Be1 Qa6) 38. Rh1 {[%mdl 1024] White has strong compensation.} h6 39. Nf3 $36 {[%mdl 2048] White is more active.} Rg7 40. Nh4 Ne7 41. Nf3 {[%cal Bh4f3,Bf3d2,Bd2e4,Be4c5][%mdl 32]} Ng8 (41... Nbc6 $11) 42. Rd2 $14 {[%cal Rd2d4]} Bd8 {[#]} 43. Rd3 $1 Qc6 44. Qe2 {Black must now prevent Nxd4.} Qe8 45. Nd2 Nc6 46. Ne4 Be7 47. Rb3 h5 (47... g5 $16 {keeps fighting.}) 48. Rb5 ({Weaker is} 48. gxh5 Nh6 $14) 48... h4 $2 (48... Nh6) 49. Bxh4 $18 Bxh4 $2 (49... b6 50. Bxe7 Ngxe7) 50. Rxh4 Rxf4 {If only Black now had time for ...b6....} 51. Nxc5 Rgf7 52. Nd3 Nge7 53. Nxf4 Rxf4 54. Rh3 g5 $2 (54... Rf7 55. Rhb3 Nc8) 55. Rhb3 Qg6+ 56. Ka1 Nd8 57. Qd2 $2 (57. Rxb7+ Nxb7 58. Rxb7+ {[%mdl 64] Double Attack} Ka6 59. Rxe7 Rf7 60. Rxf7 Qxf7 61. c5+ Ka7 62. Qe4) 57... Nec6 58. Rxa5+ Kb8 {aiming for ...Qf7.} 59. Rab5 Qf7 {( -> ...Rf1+!)} 60. a3 $2 ({Better is} 60. Qe1 $18) 60... Rf2 $11 {[%cal Bf4f2,Bf2g2,Bg2g1][%mdl 32]} 61. Qxg5 $2 {[%mdl 8192]} (61. Rxb7+ $1 $11 {and White stays safe.} Nxb7 62. Rxb7+ Kxb7 63. Qb4+ Kc8 64. Bxc6) 61... Rxg2 $19 62. Ka2 Rg1 63. Qf6 $2 (63. Qd2 Qf1 64. Rd3) 63... Qh7 {[%csl Gg1][%cal Rh7b1]} 64. Rf3 Qb1+ {Black mates.} 65. Kb3 d3 66. Qf8 d2 $2 {Both players deserved the win here.  Weighted Error Value: White=0.41/Black=0.47} (66... Qc2+ {mates} 67. Ka2 d2 68. Rf1 Qxc4+ {[%mdl 64] Double Attack} 69. Rb3 Qxf1 70. Qxf1 Rxf1 71. Rd3 d1=Q 72. Rxd1 Rxd1 73. Kb3 Nxe5 74. Kc3 Rd3+ 75. Kc2 Ndc6 76. g5 Nd4+ 77. Kc1 Nc4 78. b3 Rxb3 79. g6 Rb2 80. g7 Rc2+ 81. Kd1 Ne3+ 82. Ke1 Nf3#) 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.06"]
[Round "1.6"]
[White "Lee, Megan"]
[Black "Krush, Irina"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2211"]
[BlackElo "2429"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,57,37,56,24,22,26,45,19,30,20,50,-76,19,24,29,0,3,-8,9,0,0,0,0,0,0,-33,-18,-9,-17,-15,-7,-20,-11,-8,0,-50,-36,-104,-106,-93,-55,-229,-211,-779,-777,-737,-759,-3099]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qf3 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2.} Nf6 8. O-O-O h5 9. Nxc6 {White is slightly better.} dxc6 10. Qg3 (10. h3 {is interesting.} b5 11. Be2 Bb7 12. Bf4 e5 13. Bg5) 10... e5 {[#] Strongly threatening ...h4.} 11. Bd4 $146 ({Predecessor:} 11. f4 h4 12. Qf2 Ng4 13. Qf3 Nxe3 14. Qxe3 exf4 15. Qd4 Be6 16. Bc4 Bxc4 17. Qxc4 {1-0 (45) Gurvich,V (2549)-Djukic,N (2790) Chess.com INT 2020}) 11... Nd7 {[#]} (11... Ng4 $17 12. Be3 Be6) 12. h4 $1 $11 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} (12... g6 13. Be3) 13. a3 g6 14. Be3 Be7 15. Be2 Nf6 $1 16. Bg5 a5 17. Qe3 {[#] Bxf6 is the strong threat.} b4 18. Nb1 Ng4 19. Bxg4 Bxg4 20. Bxe7 Qxe7 ({Avoid the trap} 20... Bxd1 $2 21. Bf6 $18) 21. Rd3 Be6 22. g3 c5 {Threatens to win with ...c4.} 23. Qg5 c4 24. Qxe5 (24. Qxe7+ $15 Kxe7 25. Rd2) 24... f6 $36 {[%mdl 2048] Keeping White busy.} 25. Qb5+ Kf7 26. Rf3 {Now White is beyond hope.} ({White has to play} 26. Rd4 $15) 26... c3 27. axb4 $2 (27. Nxc3 Rhb8 28. Qe5 bxc3 29. Qxc3) 27... cxb2+ $19 28. Kxb2 Rhb8 29. Qg5 {Weighted Error Value: White=0.62/Black=0.14} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.07"]
[Round "2.1"]
[White "Tokhirjonova, Gulrukhbegim"]
[Black "Lee, Megan"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2322"]
[BlackElo "2211"]
[Annotator "TA"]
[PlyCount "188"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,188,11,25,17,30,18,25,15,25,14,9,26,25,15,22,23,16,11,9,9,34,9,13,27,39,18,33,25,25,18,22,12,34,5,7,9,17,0,0,0,6,-5,0,0,0,-11,-4,-18,-18,-18,-18,-18,-19,-12,0,-25,-18,-23,-12,-43,-48,-35,-43,-98,-107,-127,-126,-126,-125,-148,-129,-176,-123,-116,-87,-131,-127,-327,-321,-317,-312,-297,-71,-190,-139,-213,-197,-210,-224,-300,-233,-233,-202,-188,-85,-87,-80,-142,-140,-161,-162,-195,-192,-179,-183,-365,-355,-462,-459,-534,-527,-527,-444,-534,-534,-527,-418,-329,-289,-289,-289,-289,-232,-232,-218,-214,-177,-177,-177,-177,-141,-83,-14,-591,-591,-591,-591,-591,-591,-522,-437,-29954,-29957,-29957,-29954,-29953,-29954,-29951,-29952,-29960,-29962,-29961,-29962,-29959,-29964,-29967,-29968,-29968,-29969,-29971,-29972,-29972,-29972,-29973,-29970,-29969,-29971,-29972,-29973,-29976,-29977,-29977,-29978,-29978,-29979,-29979,-29980,-29980,-29981,-29981,-29982]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a6 6. a4 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Ba7 7. O-O d6 8. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1h2,Bh2g4][%mdl 32] White has an edge.} O-O 9. h3 h6 10. Re1 Re8 11. b4 {The main line 11.b4 scores better than 11.Nf1.} Be6 12. Bxe6 Rxe6 13. Nf1 d5 14. Qc2 {[#]} Nh5 $146 ({Predecessor:} 14... Qd7 15. Be3 Bxe3 16. Nxe3 Ne7 17. c4 dxc4 18. dxc4 Ng6 19. c5 Qc6 20. Rad1 b6 {½-½ (40) So,W (2772)-Firouzja,A (2759) Chess24.com INT 2021}) 15. N1h2 dxe4 16. dxe4 Qe8 17. Ng4 Nf4 18. b5 axb5 19. Bxf4 (19. axb5 Bxf2+ 20. Nxf2 Rxa1 $15) 19... exf4 20. axb5 Ne7 {[%cal Bc6e7,Be7g6,Bg6h4,Bh4f3][%mdl 32]} 21. Nd4 Bxd4 22. cxd4 {White wants to play Rxa8.} Rc8 23. Qd3 Ng6 24. Nh2 Nh4 25. Kh1 Qd7 26. Rad1 Rb6 27. Rb1 Ra8 28. Rb2 f3 29. Nxf3 Nxf3 30. Qxf3 Qxd4 31. Qe2 Rd8 32. Rbb1 Qe5 33. Kg1 Rbd6 $36 {[%mdl 2048] Black has some pressure.} 34. Rb2 Rd4 35. Rc2 Rb4 36. g3 (36. Rc4 $15 Qxb5 37. Rxc7) 36... Rd7 $17 37. Ra2 Rxb5 38. Ra8+ Kh7 39. Qg4 Qe6 40. Qe2 Rb3 (40... Re5 $19 41. g4 Rd4) 41. e5 g6 42. h4 h5 43. Qc2 $2 (43. Ra4 $17) 43... Qb6 $1 $19 44. e6 fxe6 {Hoping for ...Rb2.} 45. Kh1 Re7 $2 (45... Rb2 $1 $19 {[%cal Rb2c2] is more deadly.} 46. Qc3 Rg7) 46. Qd2 (46. Rd1 $17 {is a better defense.}) 46... Qd6 ({Better is} 46... Qb4 $19 47. Re2 Qxd2 48. Rxd2 e5) 47. Qg5 (47. Qxd6 $17 cxd6 48. Rd8) 47... e5 48. Rf8 {next Rf6 is good for White.} Kg7 49. Rf4 Rd3 ({Resist} 49... exf4 50. Qxe7+ Qxe7 51. Rxe7+ Kf6 52. Rxc7 $19) 50. Kg2 Qc6+ 51. Kh2 Rdd7 (51... Qe6 $19 {and Black stays clearly on top.} 52. Re2 Rd5) 52. Rxe5 $17 Rf7 53. Re8 {[#]} (53. Re2 $142) 53... Rxf4 $1 54. Qxf4 {[%mdl 4096] Endgame White threatens Qf8+ and mate. KQR-KQR} Rf7 55. Qe5+ Qf6 56. f4 Qxe5 57. fxe5 $19 {KR-KR} (57. Rxe5 Rd7 58. Kg2) 57... Rf2+ 58. Kg1 {[#]} Kf7 $1 {[%mdl 512]} 59. Rd8 (59. Rb8 Rb2) 59... Rc2 60. Rd7+ Kf8 61. Kf1 b5 62. Ke1 Rc5 63. Kd2 c6 64. Rc7 b4 (64... Rxe5 65. Rxc6 Kf7 66. Rb6 $11) 65. Rb7 Rb5 (65... Rxe5 66. Rxb4 Ke7 67. Ra4 $17) 66. Rc7 {[#]} Rd5+ $1 ({Less strong is} 66... Rxe5 67. Rxc6 Kf7 68. Rc4 $15) 67. Kc2 c5 ({Don't take} 67... Rxe5 68. Rxc6 Kg7 69. Rc4 $17) 68. e6 Re5 69. Kd3 Rxe6 70. Rxc5 Rf6 (70... Rb6 $17 {White must now prevent ...b3.} 71. Kc2 b3+ 72. Kb2 Kg7) 71. Ke3 $2 {[%mdl 8192] Black continues to play with concentration.} (71. Rb5 $1 $11 {and White has nothing to worry.}) 71... Rb6 72. Kd2 b3 {[%cal Bb4b3,Bb3b2][%mdl 32] Threatens to win with ...b2.} 73. Kc1 b2+ 74. Kb1 Rb3 75. g4 (75. Rc2 $19 Kf7 76. Rg2) 75... hxg4 {Black mates.} 76. Rg5 Kg7 77. Rxg4 Kh6 78. Rg5 Rb4 79. Rg3 Rxh4 80. Kxb2 Rc4 81. Kb3 Rc8 82. Rg1 g5 83. Kb4 Kg6 84. Kb5 Kf5 85. Rf1+ Ke4 86. Rg1 Kf4 87. Rf1+ Ke3 88. Rg1 Rg8 89. Kc4 g4 90. Re1+ Kf2 91. Re7 g3 92. Rf7+ Ke3 93. Re7+ Kd2 94. Rd7+ Kc2 {Weighted Error Value: White=0.26/Black=0.15} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.07"]
[Round "2.2"]
[White "Yip, Carissa"]
[Black "Abrahamyan, Tatev"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2402"]
[BlackElo "2344"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,65,-18,0,-17,-31,-39,-25,-43,-26,-55,-55,-40,41,-79,-53,-91,-88,-77,-76,-87,15,29,42,0,0,0,14,0,285,275,354,350,884,157,143,156,154,127,120,113,342,357,341,350,719,781,754,745,1267,1081,1055,923,856,394,830,829]} 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. O-O {C02: French: Advance Variation.} Bd7 8. Re1 $1 {[%mdl 4] outshines the older 8.cxd4.} Nge7 9. h4 {Black has an edge.} a6 10. h5 h6 {[#]} 11. Qe2 $146 ({Predecessor:} 11. Na3 dxc3 12. bxc3 Nc8 13. Nc2 Qc7 14. Bf4 Nb6 15. Rb1 Na4 16. Qd2 Nc5 17. Ne3 {0-1 (38) Sanal,V (2556)-Nihal,S (2620) Belgrade 2021}) 11... f5 (11... dxc3 $15 12. bxc3 Nc8) 12. exf6 (12. Nbd2 $14 {stays ahead.}) 12... gxf6 $17 13. cxd4 Nxd4 14. Nxd4 Qxd4 15. Be3 Qe5 (15... Qh4 $1 $17 {Strongly threatening ...Rg8.} 16. Qf3 Rg8) 16. Nd2 $11 Rg8 ({Don't blunder} 16... Qxb2 $2 17. Nc4 $1 $18 {[%mdl 512]} (17. Rab1 Qe5 $16)) 17. f4 {[%mdl 1024] White has compensation.} (17. Qf3 {is more complex.} Nf5 18. Bf4 Nh4 19. Bxe5 Nxf3+ 20. Nxf3 fxe5 21. Bg6+) 17... Qd6 18. Qf2 Rc8 19. Rad1 {Threatening Bh7.} Bc6 $2 {[%mdl 8192] [#]} (19... f5 $11) 20. Bh7 $1 $18 {Black must now prevent Ne4!} Rg7 {[#] Threatens to win with ...d4.} 21. Ne4 $1 {[%cal Re4d6][%mdl 576] Double Attack, Pin} Qc7 {[#]} (21... Qd8 22. f5 dxe4 23. Rxd8+ Rxd8) 22. Bb6 $1 dxe4 $16 23. Bxc7 Rxh7 24. Bd6 Rg7 25. Rc1 Nf5 $2 {A mistake that costs the game.} (25... f5 $16 {was worth a try.}) 26. Bxf8 $18 Kxf8 {[#]} 27. Rxe4 {[%mdl 576] Pin} Rd8 $2 {[#]} (27... Kf7 28. Rec4 Ne7) 28. Rxc6 $1 bxc6 29. Rxe6 {[%mdl 64] Double Attack} Ng3 30. Rxf6+ Ke7 31. Qc5+ Kxf6 32. Qe5+ Kf7 {aiming for ...Rd1+.} 33. Qc7+ {[%mdl 64] Double Attack.  Weighted Error Value: White=0.37/Black=0.58} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.07"]
[Round "2.3"]
[White "Zatonskih, Anna"]
[Black "Cervantes Landeiro, Thalia"]
[Result "1/2-1/2"]
[ECO "D23"]
[WhiteElo "2422"]
[BlackElo "2175"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,84,-6,43,31,34,41,31,34,33,34,20,0,0,0,53,-9,-9,-18,0,-4,-2,0,0,0,-2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. Qa4+ Nbd7 5. Nc3 e6 6. e4 Be7 7. Bxc4 {D23: Queen's Gambit Accepted: 3 Nf3 Nf6 sidelines.} O-O 8. Qc2 c5 9. e5 {White is slightly better.} Nd5 10. Bxd5 exd5 11. Nxd5 cxd4 {Threatens to win with ...Qa5+.} 12. Qe4 Re8 {[#]} (12... f6 $11) 13. Nxe7+ $146 ({Worse is} 13. Qxd4 Bc5 $17) ({Don't go for} 13. Nxd4 $2 {[#]} Bb4+ $1 {[%mdl 512]} 14. Nxb4 Rxe5 $19) (13. O-O $14) ({Predecessor:} 13. O-O Nc5 14. Qxd4 Be6 15. Nxe7+ Qxe7 16. Bg5 Qf8 17. Rac1 Rec8 18. b4 Nd7 19. a4 {½-½ (36) Quinn,J (2104)-Johnson,D England 2013}) 13... Qxe7 $11 {The position is equal.} 14. Qxd4 Nxe5 15. Nxe5 Qxe5+ 16. Qxe5 Rxe5+ 17. Be3 Be6 18. O-O Rc8 19. Bxa7 Ra5 20. Bd4 Rxa2 21. Rac1 (21. Rxa2 {feels hotter.} Bxa2 22. Bc3 Rd8 23. Re1 f6 24. f3) 21... Rxc1 22. Rxc1 {[%mdl 4096] Endgame KRB-KRB} Ra4 23. Bc3 h5 (23... f6 {keeps more tension.} 24. f3 Kf7 25. Kf2 b5 26. Be1 Bc4) 24. f3 b5 25. b4 Ra2 26. Ra1 Rc2 27. Bd4 Rd2 28. Be3 Rb2 29. Bc5 g5 30. h3 g4 31. hxg4 hxg4 32. Ra8+ Kh7 33. Rh8+ {[%mdl 64] [#] Decoy} Kxh8 34. Bd4+ {[%mdl 64] Double Attack} Kh7 35. Bxb2 gxf3 36. gxf3 {KB-KB} Kg6 37. Kf2 Kf5 38. Bd4 Kf4 39. Be3+ Kf5 40. Bd4 Kf4 41. Be3+ Kf5 42. Bd4 Kf4 {Weighted Error Value: White=0.04/Black=0.06} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.07"]
[Round "2.4"]
[White "Foisor, Sabina-Francesca"]
[Black "Nemcova, Katerina"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2205"]
[BlackElo "2331"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,112,-6,8,10,1,8,0,0,28,31,22,17,18,23,23,10,17,18,31,19,22,2,0,-13,0,0,10,11,20,10,10,0,27,14,18,15,82,0,0,-23,0,0,0,-73,-67,-60,-49,-53,-39,-40,-42,-64,-65,-132,-122,-216,-214,-264,-278,-266,-120,-115,-83,-83,-81,-242,-238,-236,-237,-260,-254,-274,-274,-266,-251,-251,-245,-381,-359,-590,-579,-541,-556,-1490,-285,-1662,-929,-2007,-1741,-6714,-6714,-6207,-6238,-6179,-6179,-6091,-6089,-5616,-1114]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. e3 Nbd7 6. Qc2 Bd6 7. b3 O-O 8. Bb2 Qe7 9. Rd1 {D45: Semi-Slav: 5 e3.} b6 10. Bd3 Bb7 11. O-O {The position is equal.} Rfd8 (11... c5 {is more complex.} 12. dxc5 bxc5 13. h3 Rac8 14. Nh4 g6) 12. e4 {aiming for e5.} dxe4 13. Nxe4 Nxe4 14. Bxe4 Nf6 15. Bd3 {[#]} Ba3 $146 ({Predecessor:} 15... h6 16. Ne5 c5 17. dxc5 Bxc5 18. Qe2 Rac8 19. h3 Ba8 20. Ng4 Nxg4 21. Qxg4 Qg5 22. Qxg5 hxg5 {½-½ (36) Le,T (2326)-Nguyen,T (2274) Hanoi 2009}) 16. Ba1 Bb4 17. Qe2 a5 18. a4 Rd6 19. Bb2 Re8 20. Ng5 h6 21. Ne4 Nxe4 22. Qxe4 {Threatening mate with Qh7+.} f5 23. Qe5 Rdd8 24. Be2 Bd6 25. Qe3 Qc7 (25... c5 $11 {keeps the balance.}) 26. f4 (26. c5 $1 $16 {[%cal Rc5d6]} bxc5 27. dxc5 Bxh2+ 28. Kh1 Rxd1 29. Rxd1) 26... c5 $11 27. Kh1 Be4 28. Bd3 Bb7 29. Qf2 {[#]} (29. Be2 $11 {remains equal.}) 29... cxd4 $1 $17 30. Bxd4 Bc5 31. Bxc5 bxc5 32. Bc2 Rxd1 33. Bxd1 Rd8 34. Qe3 (34. Qe1 $15) 34... Be4 35. Bf3 (35. Be2 $17) 35... Rd3 $19 36. Qe1 Qxf4 37. Bxe4 {[#]} Qxe4 (37... Re3 $1 $19 {[%cal Re3e1]} 38. Qb1 Qxe4 39. Qxe4 fxe4) 38. Qxa5 $17 Rxb3 (38... Qe2 {is interesting.} 39. Qe1 Qxe1 40. Rxe1 Rxb3 41. Kg1 Kf7) 39. Qxc5 $19 {[%mdl 4096] Endgame KQR-KQR} Rb2 {[%csl Gb2][%cal Re4g2]} 40. Rg1 {White does not recover from this.} (40. Qg1 $17) 40... Rc2 41. a5 Rxc4 42. Qd6 Kh7 43. a6 Ra4 44. Qb6 Ra2 45. a7 f4 {White must now prevent ...f3.} 46. a8=Q (46. h3 {was worth a try.}) 46... Rxa8 47. Qf2 $2 (47. Qb3) 47... Ra3 48. Rf1 Re3 49. h3 Rxh3+ 50. Kg1 Rg3 {Black is clearly winning.} 51. Rd1 Qe3 52. Re1 Qxf2+ 53. Kxf2 Re3 54. Ra1 Kg6 55. Ra5 Kf6 56. Ra8 e5 {Weighted Error Value: White=0.65/Black=0.09} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.07"]
[Round "2.5"]
[White "Eswaran, Ashritha"]
[Black "Paikidze, Nazi"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "2244"]
[BlackElo "2374"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,94,14,27,27,16,27,25,32,45,43,44,20,41,25,22,8,45,18,17,11,39,27,47,54,41,33,40,44,46,18,20,19,45,39,40,6,0,-3,-3,-6,-4,-12,-9,-23,-23,-20,-18,-25,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. Be2 Nf6 7. O-O Nbd7 8. d4 {B11: Caro-Kann: Two Knights Variation.} dxe4 9. Nxe4 Nxe4 10. Qxe4 {White has an edge.} g6 11. c4 Bg7 12. Rd1 O-O {[#]} 13. Bf4 $146 ({Predecessor:} 13. Bd2 Qc7 14. Qh4 c5 15. Bh6 Bf6 16. Qe4 Rfe8 17. Be3 cxd4 18. Bxd4 e5 19. Be3 {1-0 (40) Antonio,R (2427)-Filipovich,D (2050) Bucharest 2019}) 13... Re8 14. Qe3 Qa5 15. Qd2 (15. Bd6 {with more complications.} Qb6 16. Rab1 a5 17. b3 Nf6 18. Be5) 15... Qxd2 16. Rxd2 Rac8 17. Rc1 Nf8 18. Be3 a6 19. Bf3 f5 20. b4 Nd7 21. Rdd1 Nf6 22. a4 Bf8 23. Rb1 b5 24. cxb5 cxb5 25. Bb7 Rb8 26. Bc6 Rec8 27. axb5 axb5 28. d5 Nxd5 29. Bxd5 exd5 30. Rxd5 Rc4 31. Bc5 {The position is equal.} Bxc5 32. Rxc5 Rxc5 33. bxc5 $11 {[%mdl 4096] Endgame KR-KR} b4 34. c6 Rc8 35. Rxb4 Rxc6 36. Rb7 Rf6 37. Kh2 Rf7 38. Rxf7 Kxf7 {K3P-K3P} 39. Kg3 Kf6 40. f4 Ke6 41. Kh4 {[#] Strongly threatening Kg5.} h6 42. g4 fxg4 43. hxg4 Kf6 44. Kg3 g5 45. fxg5+ Kxg5 46. Kf3 h5 47. gxh5 Kxh5 {Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.07"]
[Round "2.6"]
[White "Sharevich, Anna"]
[Black "Krush, Irina"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2276"]
[BlackElo "2429"]
[Annotator "TA"]
[PlyCount "178"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,178,-14,19,7,6,4,14,13,39,27,36,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-6,-2,-36,-29,-21,-35,-29,-16,-52,-46,-51,-50,-60,-56,-60,-56,-59,-23,-24,-24,-24,-25,-22,-26,-28,-26,-40,-50,-41,-41,-39,-33,-54,-27,-32,-23,-25,-7,-31,-32,-37,0,0,0,-37,-37,-54,-54,-54,-54,-54,-54,-67,-37,-35,-14,-81,-81,-127,-48,-49,-35,-50,-40,-131,-102,-133,-67,-82,-43,-133,-133,-133,-81,-218,-101,-196,-191,-278,-216,-317,-242,-254,-237,-257,-250,-237,-242,-197,-190,-258,-248,-429,-411,-356,-195,-204,-197,-196,-8,-8,-8,-46,-8,-8,-8,-8,-8,-8,0,-8,-8,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. Nd2 Nc6 5. Ngf3 Bg4 6. Bb5 {D00: 1 d4 d5: Unusual lines.} e6 7. c3 Qb6 8. Qa4 Nd7 9. Ne5 Ndxe5 10. Bxe5 {Black must now prevent dxc5.} (10. dxc5 {is interesting.} Nd3+ 11. Bxd3 Qxb2 12. Rb1 Qxc3 13. Ba6) 10... a6 11. Bxc6+ Qxc6 12. Qxc6+ bxc6 13. dxc5 f6 14. Bd6 Bxd6 15. cxd6 Kd7 16. f3 {[#]} Bh5 $146 ({Predecessor:} 16... Bf5 17. e4 Bg6 18. O-O-O Kxd6 19. Rhe1 e5 20. Nc4+ Kc5 {0-1 (37) Swayams,M (2432)-Raja,R (2431) Bucharest 2019}) 17. Ke2 Kxd6 18. c4 Rhb8 19. b3 a5 20. Rhd1 a4 21. cxd5 cxd5 22. Rac1 axb3 23. axb3 Ra2 24. Kf1 Be8 25. Ne4+ Kd7 26. Nc5+ Ke7 27. e4 dxe4 28. Nxe4 Ra7 29. Rc3 Bg6 30. Nc5 e5 31. Kf2 Bf7 32. Rcd3 Be8 33. g4 Rc7 34. Rc3 Bf7 35. Rdc1 Bd5 36. Ke3 Rb4 37. Rd1 Bb7 38. Rdc1 Bd5 39. Rd1 Bf7 40. Kf2 h5 41. h3 h4 42. Ra1 Rd4 43. Rac1 Bd5 44. Nd3 Rd7 45. Nc5 (45. Ke3 $11) 45... Ra7 $17 46. Nd3 Ra3 ({Black should play} 46... Ra2+ $17 47. Ke3 Rh2) 47. Ke3 $1 $15 Kd6 (47... Bxb3 $2 48. Rb1 $18) 48. b4 Ra2 49. b5 (49. Rc8 $15) 49... Rh2 $36 {[%mdl 2048] Black is in control.} 50. Nf2 Rb4 (50... Rg2 $17 51. Ne4+ Bxe4 52. fxe4 Rg3+ 53. Kf2 Rxc3 54. Rxc3 Rxe4 55. Rc6+ Kd5) 51. Ra1 Rxb5 {Threatens to win with ...Rb2.} 52. Ra6+ (52. Ne4+ $15 Bxe4 53. Ra6+ Kd7 54. Kxe4) 52... Kd7 $1 53. Ra7+ Rb7 ({Black should try} 53... Bb7 54. Raa3 (54. Ne4 $2 Rxh3 55. Nc5+ Rxc5 $17) 54... g6 55. Rd3+ Ke6) 54. Ra5 {[#]} (54. Rxb7+ $17 {might work better.} Bxb7 55. Ra3) 54... Be6 (54... Rb2 $1 $19 55. Rxd5+ Ke6) 55. Nd3 (55. Rca3 $17 {is a better defense.}) 55... Ke7 56. Ra6 (56. Rca3 $142) 56... Bd7 $19 ({Not} 56... Rxh3 57. Rxe6+ $1 Kf7 58. Rec6 $16) 57. g5 (57. Rca3 $142) 57... Rxh3 ({Much less strong is} 57... Bxh3 58. gxf6+ gxf6 59. Rcc6 $19) 58. gxf6+ gxf6 59. Nc5 Rc7 60. Ne4 Rxc3+ 61. Nxc3 {[%mdl 4096] Endgame KRB-KRN} Be6 62. Ra7+ (62. Ne4 $142) 62... Kf8 $1 {...Bg4 is the strong threat.} 63. Ra6 $2 (63. Ne4 Bg4 64. Nd2) 63... Kf7 64. Ne4 Rh1 (64... Rh2 $142 65. Ra8 Rg2) 65. Ra7+ Kg6 {And now ...h3 would win.} 66. Ra6 {[#]} Bf7 $2 (66... Re1+ $1 $19 67. Kf2 {[#]} Re2+ $3 {[%mdl 512]} 68. Kg1 Bd5 69. Rxf6+ Kg7) 67. Rxf6+ $11 Kg7 {Hoping for ...Re1+.} 68. Rb6 Rg1 {With the idea ...h3.} 69. Kf2 {The position is equal.} Rg6 70. Rb5 h3 {aiming for ...Rg2+.} 71. Ng3 Kf6 72. Rb6+ Be6 73. Rb8 Bd5 74. Rh8 Be6 75. Rh5 Rg8 76. Ne4+ Ke7 (76... Kg6 {with more complications.} 77. Rg5+ Kh6 78. Rxg8 Bxg8 79. Kg3 Be6) 77. Ng5 (77. Rxe5 {is interesting.} Rg2+ 78. Ke3 h2 79. Rh5 Bc8 80. Nf2) 77... Bf7 (77... Bf5 {is more complex.} 78. Nxh3 Kf6 79. Rh6+ Bg6 80. Ke3 Kg7) 78. Nxf7 Kxf7 79. Rxh3 {KR-KR} Ke6 80. Ke3 Kd5 81. Rh1 Ra8 82. Rd1+ Ke6 83. Rd3 Ra4 84. Rd8 Ra3+ 85. Ke4 Ra4+ 86. Ke3 Ra3+ 87. Ke4 $1 Ra4+ 88. Ke3 Ra3+ 89. Ke4 $1 Ra4+ {Whites escaped into a draw.  Weighted Error Value: White=0.19/Black=0.13} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.08"]
[Round "3.1"]
[White "Cervantes Landeiro, Thalia"]
[Black "Foisor, Sabina-Francesca"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "2175"]
[BlackElo "2205"]
[Annotator "TA"]
[PlyCount "165"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,165,22,21,22,21,12,18,15,23,5,18,6,22,22,27,22,21,22,21,27,39,3,34,0,0,0,0,0,0,0,0,0,16,10,20,22,23,20,35,33,74,74,89,89,89,89,257,249,233,234,253,250,287,291,297,289,283,287,281,281,285,268,307,130,568,143,122,129,137,0,385,377,386,382,367,360,566,552,881,885,929,887,884,830,646,646,971,970,855,892,911,840,1517,719,598,0,1490,1499,1520,1397,1857,1242,1822,1683,2019,1990,1718,1758,1704,1681,1600,1499,1441,1383,1383,830,29971,29971,29968,12628,29974,29975,29976,29976,29977,29977,29977,29976,29976,29977,29976,29977,29977,29978,29978,29979,29978,29980,29980,29981,29981,29981,29982,29983,29983,29984,29984,29985,29985,29986,29986,29987,29987,29988,29988,29989,29989,29990]} 1. d4 d5 2. c4 e6 3. Nc3 a6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} Bd6 7. Bg5 $1 {[%mdl 4] is now more promising than 7.Bxd6.} Be6 8. Bd3 {The position is equal.} Nbd7 9. Qc2 h6 10. Bh4 c6 {[#]} 11. Nge2 $146 ({Predecessor:} 11. f4 Nb6 12. Nf3 Qc7 13. Bxf6 gxf6 14. O-O O-O-O 15. Rab1 c5 16. Kh1 Kb8 17. a4 {½-½ (56) Chan,N (2004)-Kusenkova,N (2211) Antalya 2019}) 11... Qc7 12. Bg3 Bxg3 13. Nxg3 O-O 14. O-O Qd6 15. Na4 Rfe8 16. Nc5 Nxc5 17. dxc5 Qe5 18. h3 Rad8 {[%cal Ba8d8,Bd8d5,Bd5g5][%mdl 32]} 19. Ne2 Bc8 20. Nd4 Ne4 21. Bxe4 dxe4 22. Ne2 Rd5 23. b4 Qe7 24. Rad1 Rg5 25. Nf4 Re5 26. Rd6 Be6 27. Rfd1 Kh7 $2 (27... Bf5 $16 {might work better.}) 28. Nxe6 $18 Rxe6 29. Rd7 Qg5 30. Rxf7 Rg6 {[%csl Gg6][%cal Rg5g2]} 31. g3 Qh5 32. Rdd7 (32. Rxb7 $6 Qxh3 33. Rf7 h5 $16) 32... Qxh3 33. Qb2 {[%cal Rf7g7]} (33. Rxb7 Rd8 $11) 33... Qg4 {and the idea ...h5 leaves Black hopeful.} 34. Qd4 (34. Rxb7 Rd8 $16) 34... h5 {[#]} 35. Rf4 $1 {[%cal Rf4g4]} (35. Rxb7 h4 $16) 35... Qh3 36. Rd8 (36. Rxb7 $18 {has better winning chances.} h4 37. Qd7 {[%mdl 64] Overworked Piece} (37. Rxe4 Rxe4 38. Qxe4 hxg3 $11) 37... Qxd7 38. Rxh4+ (38. Rxd7 hxg3 39. Ra7 Rd8 $16) 38... Rh6 39. Rxd7) 36... Ree6 $2 {[%mdl 8192]} (36... Rxd8 $16 37. Qxd8 Qe6) 37. Rd6 $2 (37. Qd7 $18 {and the rest is easy. Qc8! is the strong threat.} Rg4 38. Rff8 (38. Qxb7 $2 Rxf4 39. Rh8+ Kxh8 $19) 38... Rxg3+ 39. fxg3 Qxg3+ 40. Kf1 Qh3+ 41. Ke1 Qxe3+ 42. Kd1) 37... Rxd6 $16 38. cxd6 {[%mdl 4096] Endgame Hoping for d7. KQR-KQR} Qd7 39. Rf7 Qxd6 $2 {[%mdl 8192] [#] Black is on the road to losing.} (39... Qxf7 $11 {and Black stays safe.} 40. d7 Qf3) 40. Rxg7+ $3 $18 {[%mdl 512]} Kh6 {intending ...Qxd4.} 41. Qxd6 Rxd6 42. Rxb7 {KR-KR} Rd1+ (42... Rd2 $142 43. a3 Ra2) 43. Kg2 Ra1 44. Rb6 Rxa2 45. Rxc6+ Kg5 46. Rc5+ Kg4 47. Re5 Ra4 48. Rxe4+ Kf5 49. Rh4 Kg5 50. Kf3 Kg6 51. Rc4 (51. g4 $142 hxg4+ 52. Rxg4+ Kf6 53. Rf4+ Kg5 54. Rd4) 51... Kf7 52. Rh4 (52. Rc6 $142 Rxb4 53. Rxa6) 52... Kg6 53. g4 hxg4+ 54. Rxg4+ Kf5 55. Rh4 Ke6 56. Rh5 Rxb4 57. Rh6+ Kf5 58. Rxa6 Rb5 59. e4+ Kg5 60. Ra3 Rc5 61. Rd3 Rc2 62. Rd5+ Kh4 63. Ke3 Ra2 64. f3 Ra8 65. Kf4 {White mates.} Rf8+ 66. Rf5 Ra8 67. Rf7 {[%cal Rf7h7]} Kh3 68. Kf5 Kg3 69. f4 Ra4 70. Rb7 Ra8 71. Rb3+ Kh4 72. Rb6 Kg3 73. e5 Rf8+ 74. Rf6 Ra8 75. Kg6 Kg4 76. e6 Ra7 77. Rf7 Ra6 78. f5 Kf4 79. Kg7 Ke5 80. e7 Ra8 81. Rf8 Ra7 82. f6 Ke6 83. Kg6 {Weighted Error Value: White=0.38/Black=0.52} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.08"]
[Round "3.2"]
[White "Abrahamyan, Tatev"]
[Black "Zatonskih, Anna"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2344"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,93,35,12,17,21,20,0,0,0,0,0,12,9,10,0,4,0,-6,-63,-62,-82,0,0,0,0,0,-43,-41,-53,-41,-70,-56,-77,0,0,0,-27,0,0,0,0,22,0,24,0,0,14,4,-2,0,-8,30,24,39,33,84,84,92,85,92,85,85,85,85,84,84,88,84,80,81,67,64,81,659,663,651,637,808,807,771,678]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 g6 4. b3 Bg7 5. Bb2 O-O 6. O-O a5 7. c4 c6 8. d3 {8.Nc3 is more fashionable.} Re8 {A11: English Opening: 1...c6.} 9. Nbd2 Nbd7 10. Rc1 e5 {The position is equal.} 11. cxd5 cxd5 12. e4 {[#]} dxe4 $146 ({Predecessor:} 12... d4 13. Nc4 Bf8 14. a4 b6 15. Ne1 Nc5 16. f4 Bg4 17. Nf3 exf4 18. gxf4 Bh6 {0-1 (49) Manafov,V (2245)-Nguyen,H (1996) Porto Carras 2018}) 13. dxe4 b5 14. Qc2 Ba6 15. h3 Bh6 16. Qb1 (16. Rfd1 $11) 16... Qb6 $15 17. Rcd1 Nh5 ({Black should try} 17... Rad8 $17) 18. Rfe1 $1 $11 Rad8 {Strongly threatening ...Nxg3.} 19. Nf1 b4 20. Ne3 (20. Rd5 {seems wilder.} Nhf6 21. Rdd1 Bb7 22. N1d2 Ba6 23. Nf1) 20... Bxe3 21. Rxe3 f6 22. Nd2 Nc5 23. Bf1 Bb7 ({Better is} 23... Bxf1 $17 24. Nxf1 Ng7) 24. Nc4 Qc7 25. Bg2 Ng7 26. Ree1 Nge6 27. Ne3 Qf7 28. Qc2 Ba6 {next ...Nd3 is good for Black.} 29. Nd5 Rc8 $1 30. Qb1 Nc7 $1 31. Nxc7 Rxc7 32. Bc1 Ne6 {[%cal Bc5e6,Be6d4,Bd4b5,Bb5c3][%mdl 32]} 33. Be3 Rd7 34. Rd5 Rxd5 (34... Nd4 $14) 35. exd5 $16 Nd4 36. Qd1 Nb5 37. Bb6 {Threatens to win with d6.} Nc3 38. Qd2 Bb7 {[%cal Rb7d5] [#]} 39. d6 $36 {[%mdl 2048] White is on the roll.} ({Much worse is} 39. Bxa5 $6 Bxd5 40. Bxd5 (40. Bxb4 Bxg2 41. Qxc3 Bxh3 $11) 40... Qxd5 $11) 39... Bxg2 40. d7 Bxh3 41. dxe8=Q+ Qxe8 42. Kh2 Be6 43. Bxa5 Bd5 $2 {[%mdl 8192] Loses the game.} (43... g5 $16 44. Qd8 (44. Bxb4 $2 Qh5+ 45. Kg1 Bd5 $17) 44... Qxd8 45. Bxd8 Kf7) 44. Bxb4 $18 {White is clearly winning.} g5 45. g4 Qg6 {[#] ( -> ...Qh6+)} 46. Qxc3 {Threatening mate with Qc8+.} Qh6+ 47. Qh3 {Weighted Error Value: White=0.09/Black=0.31} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.08"]
[Round "3.3"]
[White "Lee, Megan"]
[Black "Yip, Carissa"]
[Result "1/2-1/2"]
[ECO "B52"]
[WhiteElo "2211"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,67,19,19,29,32,30,33,35,12,12,1,21,0,11,0,0,0,0,-23,0,0,33,39,83,50,80,75,70,67,95,89,91,0,84,89,104,78,82,0,94,94,134,81,81,0,79,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4 e6 8. Qe2 cxd4 9. cxd4 d5 10. e5 Ne4 11. Be3 Be7 12. Ne1 {[#] Threatens to win with f3.} f5 {B52: Sicilian: Moscow Variation with 3...Bd7.} 13. f3 Ng5 14. Nd3 O-O {White is slightly better.} 15. Nd2 {15.Qd2 is setting a new trend.} Nf7 16. Rfc1 b6 {[#]} 17. a3 $146 ({Predecessor:} 17. Rc3 Rfc8 18. Rac1 Nb4 19. Nxb4 Bxb4 20. Rxc8+ Rxc8 21. Rxc8+ Qxc8 22. Qb5 Be7 23. Nb1 {½-½ (42) Dueckstein,A (2335)-Wittmann,W (2385) Wolfsberg 1985}) 17... a5 18. Rc3 Rfc8 19. Rac1 Nfd8 20. g4 fxg4 21. fxg4 Nf7 22. Nf3 Bd8 23. Kg2 Na7 24. h4 Rxc3 25. Rxc3 Nc6 26. Nf4 Ne7 27. Nd3 (27. Bd2 $16) 27... a4 (27... Nc6 $1 $11) 28. Qc2 $16 Qb5 29. Nf4 Qd7 30. Nd3 (30. Qd3 $16) 30... Rb8 (30... Qb5 $1 $11 {remains equal.}) 31. Kh3 Qe8 32. Nf4 (32. Bg5 $142) 32... Qd7 33. Nd3 ({White should play} 33. Bd2 $16) 33... Ra8 (33... Qe8 $1 $11) 34. Kg2 {Weighted Error Value: White=0.20/Black=0.31} (34. Bd2 $16) 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.08"]
[Round "3.4"]
[White "Krush, Irina"]
[Black "Tokhirjonova, Gulrukhbegim"]
[Result "1/2-1/2"]
[ECO "D88"]
[WhiteElo "2429"]
[BlackElo "2322"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,102,11,17,11,0,0,0,0,12,0,0,0,0,-16,-27,-12,-19,-25,0,-37,-23,-27,-27,-85,-95,-89,0,-72,-61,-70,-61,-66,-75,-118,-72,-66,-70,-145,-143,-137,-120,-109,-8,-8,-8,-8,0,0,0,-206,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,-8,0,0,0,-12,0]} 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. d4 g6 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 O-O 10. O-O b6 11. Rc1 cxd4 12. cxd4 Bb7 13. Qd2 $1 {13.Qd2 scores better than 13.f3.} Na5 14. Bd3 Qd7 15. h4 {D88: Exchange Grünfeld: Classical Line: 10 Be3 cxd4 11 cxd4.} Rfc8 16. h5 Rxc1 17. Rxc1 Rc8 18. h6 Bf8 {[#]} 19. f3 $146 ({Predecessor:} 19. d5 Rxc1+ 20. Qxc1 e6 21. Qc3 exd5 22. Bc1 Qc6 23. Qe5 Qd6 24. Qc3 f6 25. Bf4 {0-1 (32) Svensson,S (2062)-Escher,H (2120) Rogaska Slatina 2012}) 19... e6 20. Ng3 Rxc1+ 21. Qxc1 Nc6 22. Qb2 Qd6 23. Nf1 Qa3 24. Qxa3 Bxa3 25. Ng3 (25. Nd2 $11) 25... Nb4 $17 26. Bc4 Bc6 (26... Nc2 $17 27. Nf1 Bf8) 27. Bd2 (27. Ne2 $11 {remains equal.}) 27... b5 28. Bb3 a5 29. d5 $1 {And now Bxb4 would win.} Bd7 $1 30. dxe6 Bxe6 (30... fxe6 {keeps more tension.} 31. e5 a4 32. Bxb4 Bxb4 33. Bc2 Bc6) 31. Bxe6 fxe6 32. Bxb4 (32. Kf2 $15) 32... Bxb4 {[%mdl 4096] Endgame KB-KN} 33. Kf2 Bf8 34. Ke3 {[#]} a4 ({Don't play} 34... Bxh6+ $6 35. Kd4 $11) ({Better is} 34... e5 $1 $17) 35. Ne2 $11 b4 {With the idea ...a3.} 36. Kd3 Bxh6 37. Kc4 Bf8 38. Nd4 $2 {[#]} (38. e5 $1 $11) 38... Bg7 $2 (38... b3 $1 $19 {[%cal Rb3b2] aiming for ...b2.} 39. axb3 a3) 39. Nc2 {The position is equal.} ({Don't go for} 39. Nxe6 $2 b3 $19) 39... b3 {[%cal Rb3c2]} 40. axb3 axb3 41. Kxb3 Kf7 42. Kc4 Be5 43. Kd3 h5 44. Ke3 g5 45. Nb4 Kf6 46. Nc6 Bc7 47. Ke2 Bb6 48. Kf1 Bc7 49. Ke2 Bb6 50. Kf1 Bc7 51. Ke2 Bb6 {Weighted Error Value: White=0.22/Black=0.18} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.08"]
[Round "3.5"]
[White "Paikidze, Nazi"]
[Black "Sharevich, Anna"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2374"]
[BlackElo "2276"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,97,24,38,-18,-30,-30,-21,-81,-46,-42,-47,-37,0,0,0,0,0,-81,0,-15,20,28,83,25,73,74,56,62,33,31,32,0,19,-108,-100,-168,-16,-71,-71,-70,-70,-70,-70,-84,-70,-69,-42,-42,-43,-50,-59,-110,-82,-81,-54,-53,-10,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. Bf4 dxc4 6. e4 {D37: Queen's Gambit Declined: 5 Bf4.} (6. e3 $14) 6... Bb4 $11 7. Bxc4 Nxe4 {[#]} 8. Qb3 $146 (8. Qc2 $11 Nxc3 9. bxc3) ({Predecessor:} 8. O-O Nxc3 9. bxc3 Bd6 10. Bg3 O-O 11. Ne5 Qe7 12. Re1 Re8 13. Re3 Nf8 14. Qh5 {0-1 (41) Tin,J (2464)-Lupulescu,C (2652) Chess.com INT 2020}) 8... Bxc3+ 9. bxc3 O-O 10. O-O Ndf6 11. Rfe1 b6 12. Rad1 Bb7 13. Bf1 (13. Ne5 $11 {remains equal.}) 13... h6 (13... Ng4 $17 14. Bg3 Nxg3 15. hxg3 Qd6) 14. c4 Nh5 15. Bc1 Qf6 (15... Nd6 $11) 16. Qe3 (16. Qc2 $16) 16... g5 17. Ne5 Qg7 18. Qf3 f6 19. Qxh5 {aiming for Ng4.} fxe5 20. dxe5 Nxf2 21. Rd4 (21. Rd2 $11 Ne4 22. Rd4) 21... Rf5 $17 22. c5 {[#]} (22. Bd3 $17 Nxd3 23. Rxd3) 22... bxc5 $2 (22... Bd5 $1 $19 23. Be3 Ne4) 23. Bc4 cxd4 24. Bxe6+ {[#]} Rf7 $1 25. Bxf7+ Qxf7 26. Qxf7+ Kxf7 27. e6+ Kf6 (27... Ke8 {keeps more tension.} 28. Kxf2 Rd8 29. Ba3 Rd5 30. Rc1 Rf5+) 28. Kxf2 $15 {[%mdl 4096] Endgame KRB-KRB} Re8 29. Bb2 $1 c5 30. Rc1 ({Better is} 30. Ba3 $1 $15) 30... Kxe6 {And now ...Kd5 would win.} (30... Rc8 {feels hotter.} 31. Ba3 Kxe6 32. Rxc5 Rf8+ 33. Ke1 Bxg2 34. Rc6+ Bxc6 35. Bxf8 h5) 31. Rxc5 Rf8+ 32. Ke1 Rd8 (32... Bxg2 {seems wilder.} 33. Bxd4 Rf4 34. Bg7 Rh4 35. Ra5 Bc6) 33. g3 {The position is equal.} Rd5 (33... Rd6 {with more complications.} 34. h4 Ra6 35. Rc7 Bd5 36. Bxd4 Ra4) 34. Rc7 Rd7 35. Rxd7 Kxd7 36. Bxd4 $11 {KB-KB} a6 37. g4 Bf3 38. Bg7 h5 39. gxh5 Bxh5 40. Kf2 Ke6 41. Kg3 Kf5 42. h4 gxh4+ 43. Kxh4 Bf7 44. a3 Bc4 45. Bf8 Bb5 46. Bc5 Bc4 47. Bf8 Bb5 48. Bc5 Bc4 49. Bf8 {Weighted Error Value: White=0.21/Black=0.16} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.08"]
[Round "3.6"]
[White "Nemcova, Katerina"]
[Black "Eswaran, Ashritha"]
[Result "1/2-1/2"]
[ECO "A47"]
[WhiteElo "2331"]
[BlackElo "2244"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,86,0,4,0,9,0,19,20,25,19,12,7,15,1,23,15,20,21,23,23,31,27,15,17,29,14,19,1,18,15,49,31,34,0,7,-29,1,0,-6,-61,0,-15,25,0,0,-25,-16,-22,-27,-16,-28,-20,-14,-14,-14,-14,-16,-16,-16,-16,-21,-24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Bf4 e6 3. e3 c5 4. Nf3 b6 5. Nbd2 Be7 6. h3 {A47: 1 d4 Nf6 2 Nf3 b6: Torre, London and Colle Systems.} O-O 7. c3 Ba6 (7... Bb7 {looks sharper.} 8. Bd3 d5 9. O-O Ne4 10. Bc2 Nd6) 8. Bxa6 Nxa6 9. O-O Qc8 10. Qe2 Qb7 {[#]} 11. Rad1 $146 ({Predecessor:} 11. Bg5 h6 12. Bh4 Rfe8 13. e4 d5 14. e5 Ne4 15. Bxe7 Nxd2 16. Nxd2 Rxe7 {1-0 (32) Georgiev,V (2530)-Matsenko,S (2533) Chicago 2017}) 11... Rac8 12. Nc4 {White wants to play Bd6.} Ne4 13. Nfd2 Nxd2 14. Rxd2 d5 15. Nd6 Bxd6 16. Bxd6 Rfd8 17. Bg3 b5 18. h4 c4 19. h5 Qe7 20. h6 g6 21. e4 Qg5 22. e5 Nc7 23. Rdd1 Qxh6 24. f3 (24. Qg4 $11) 24... Kf8 (24... Rb8 $15) 25. Kf2 Qg7 (25... g5 {feels hotter.} 26. Rh1 Qg6 27. f4 h6 28. Kg1 Ke7) 26. Qe3 h6 27. Rh1 g5 28. Rh5 Ke7 $1 29. Rdh1 Rh8 30. f4 {[%cal Rf4g5]} Rcg8 31. fxg5 hxg5 32. Rxh8 Rxh8 33. Rxh8 Qxh8 34. Qxg5+ Kd7 35. Bh4 Qh7 36. Qd8+ {The position is equal.} Kc6 37. Qd6+ Kb7 38. Bd8 Qf5+ 39. Kg3 Qd3+ 40. Kh2 Qh7+ 41. Kg3 Qd3+ 42. Kh4 Qh7+ 43. Kg3 Qd3+ {Weighted Error Value: White=0.09/Black=0.09} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.09"]
[Round "4.1"]
[White "Zatonskih, Anna"]
[Black "Lee, Megan"]
[Result "1/2-1/2"]
[ECO "D23"]
[WhiteElo "2422"]
[BlackElo "2211"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,109,7,15,8,10,0,0,0,11,20,7,18,13,0,25,13,28,0,0,0,18,0,0,0,0,0,0,0,0,-7,0,-5,0,-1,16,0,0,0,0,0,0,0,0,-34,-34,-33,-6,-29,0,-8,0,0,0,0,0,0,0,0,0,0,0,-13,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,14,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qb3 dxc4 5. Qxc4 Bf5 6. g3 e6 7. Bg2 Be7 8. O-O {D23: Queen's Gambit Accepted: 3 Nf3 Nf6 sidelines.} O-O 9. Qb3 Qb6 10. Nbd2 Nbd7 11. Nc4 Qxb3 12. axb3 Be4 13. Bf4 Bd5 14. Rfc1 Rfc8 {[#]} 15. Nd6 $146 ({Predecessor:} 15. Bg5 Kf8 16. Nfe5 Bxg2 17. Bxf6 Nxf6 18. Kxg2 Ke8 19. Kf3 Nd5 20. Nd3 Nc7 21. e3 {1-0 (55) Kazakovskiy,V (2460)-Tsaruk,M (2309) Minsk 2020}) 15... Bxd6 16. Bxd6 Ne4 17. Ne5 {[#] And now Bxe4 would win.} Nxd6 18. Nxd7 Bxg2 19. Kxg2 f6 20. Nc5 Kf7 21. e3 Re8 22. Rd1 Re7 23. f4 Nb5 24. Kf3 h5 25. h3 Rh8 26. Ne4 Rd7 (26... a6 {with more complications.} 27. Nc5 Nd6 28. Rac1 Rd8 29. b4 Rh8) 27. Nc3 a6 {[%cal Ba7a6,Ba6b5][%mdl 32]} 28. Nxb5 axb5 $11 {[%mdl 4096] Endgame KRR-KRR} 29. Ke4 Rhd8 30. b4 Re7 31. g4 {The position is equal.} hxg4 32. hxg4 Rh8 33. Rh1 Rxh1 34. Rxh1 {KR-KR} Re8 35. Ra1 f5+ 36. Kf3 Ke7 37. e4 fxe4+ 38. Kxe4 Kd6 39. Rh1 Ke7 40. Ke5 Rd8 41. Ra1 Rd5+ 42. Ke4 Rd7 43. Ra8 Kd6 44. Rg8 Rf7 45. g5 Rd7 46. Re8 Rf7 47. Ra8 Rd7 48. Rg8 Rf7 49. Re8 (49. g6 {is interesting.} Rd7 50. Re8 Rc7 51. Rg8 Rd7) 49... Kd7 50. Rh8 (50. Rg8 {feels hotter.} Kd6) 50... Kd6 51. Rg8 Rd7 52. Re8 Rf7 53. Rd8+ Kc7 54. Rh8 Kd6 55. Rg8 {Weighted Error Value: White=0.05/Black=0.03} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.09"]
[Round "4.2"]
[White "Sharevich, Anna"]
[Black "Tokhirjonova, Gulrukhbegim"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2276"]
[BlackElo "2322"]
[Annotator "TA"]
[PlyCount "154"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,154,-1,6,0,4,0,9,-1,23,24,21,15,14,26,33,43,35,29,72,45,106,106,85,21,59,61,68,52,49,36,52,12,19,10,15,-39,0,0,0,-16,-19,-65,-71,-105,-6,-128,-91,-165,-160,-159,-139,-148,-133,-298,-99,-121,-107,-102,-91,-104,-104,-97,-99,-95,-81,-86,-85,-101,0,-111,109,53,87,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-2,0,-6,0,0,0,0,0,0,0,0,0,0,0,-5,0,0,12,-8,-8,-8,-8,-8,-8,-8,-8,-8,0,0,0,-8,16,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. Nd2 Nc6 5. Ngf3 e6 6. c3 Nh5 7. Bg5 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} f6 8. Bh4 g6 9. Bb5 {[#]} Be7 $146 ({Predecessor:} 9... cxd4 10. Nxd4 Bd7 11. O-O a6 12. Be2 Ng7 13. e4 Be7 14. exd5 Nxd4 15. cxd4 exd5 {0-1 (44) Karjakin,S (2757)-Esipenko,A (2716) Moscow 2021}) 10. dxc5 Bxc5 11. O-O O-O 12. c4 a6 13. Ba4 Be7 14. cxd5 exd5 15. Rc1 Nb4 (15... b5 $14) 16. Bb3 $16 Nd3 17. Rb1 (17. Rc3 $16 Nc5 18. Ne4 Nxb3 19. Qxb3) 17... Kh8 18. Nd4 Qd6 19. Qe2 Nc5 20. Bc2 Bd7 21. g4 Ng7 22. Bg3 Qb6 23. h4 (23. Rfd1 $11) 23... f5 24. g5 Rae8 25. Be5 Bd6 26. Bf6 Bb8 27. f4 Kg8 ({Black should play} 27... Rxf6 $17 28. gxf6 Qxf6) 28. b4 (28. Qg2 $11) 28... Nce6 $17 29. Qf2 {[#]} (29. Nxe6 $17 Rxe6 30. Rbe1) 29... Rxf6 $1 $19 {[%mdl 576] Remove Defender} 30. gxf6 Nxd4 {[%mdl 64] Discovered Attack} 31. exd4 Qxf6 32. Bb3 $2 (32. Rfe1 $17 {was worth a try.}) 32... Bc6 $2 (32... Nh5 $1 $19 {[%cal Rh5f4] is more deadly.} 33. Nf3 (33. Bxd5+ $2 Kg7 $19) 33... Nxf4) 33. Rbe1 Ne6 34. Nf3 Nxf4 {aiming for ...Nh3+.} 35. Rxe8+ Bxe8 36. Qe3 Bb5 37. Re1 Bd6 38. a4 Bc6 39. Rf1 Nh3+ (39... Kg7 $17 40. Rb1 b5) 40. Kh1 (40. Kg2 $11 {remains equal.} Nf4+ 41. Kg1) 40... f4 $2 {[#]} (40... Bxb4 $2 41. Kg2 $18) (40... Kg7 $1 $17 {keeps the pressure on.} 41. Rb1 Nf4) 41. Qd2 (41. Qe2 $1 $16) 41... Qf5 {[#]} 42. Bc2 (42. Qc2 $1 $16 {[%cal Rc2f5]} Qe6 43. Qg2) 42... Qg4 {The position is equal.} 43. Qg2 Qg3 $36 {[%mdl 2048] Black has some pressure.} 44. Qxg3 fxg3 45. Kg2 $1 {[%cal Rg2h3]} Nf4+ 46. Kxg3 Nd3+ 47. Kg2 Nxb4 48. Bb3 Nd3 49. Rd1 Nb2 50. Ra1 Nc4 51. Kf2 Kg7 52. Ng5 Bd7 53. Re1 Bb4 54. Re2 b5 55. axb5 axb5 56. Ra2 {And now Bxc4 would win.} Bc3 57. Nf3 Bg4 58. Ra7+ Kf6 59. Ra6+ (59. Bd1 {looks sharper.} h6 60. Ra6+ Kf7 61. Bc2 Bh5 62. Bd3) 59... Ke7 60. Ra7+ Kd6 61. Rxh7 (61. Bc2 {feels hotter.} Bd7 62. Ra8 b4 63. Rd8 Na5 64. Ba4) 61... Bxf3 62. Bxc4 dxc4 63. Kxf3 $11 {[%mdl 4096] Endgame KR-KB} b4 64. Ke4 b3 {Strongly threatening ...Kc6.} 65. Rg7 Bd2 (65... Kc6 {with more complications.} 66. Rxg6+ Kb5 67. h5 Bd2 68. Rg8 Kb4) 66. Rxg6+ Kc7 67. Rg1 Kc6 68. h5 Kb5 {White must now prevent ...Kb4.} 69. d5 {d6 is the strong threat.} Kc5 70. Rd1 Bg5 {Threatens to win with ...Kb4.} (70... b2 $5 71. Rb1 $8 (71. d6 $2 Bc1 $19) 71... Bc1 $11) 71. d6 c3 72. Kd3 ({Avoid the trap} 72. Rd5+ $2 Kb6 $19) (72. Rg1 {is more complex.} Kc6 73. Kd4 c2 74. Kc3 c1=Q+ 75. Rxc1 Bxc1 76. Kxb3 Kxd6 77. Ka2) 72... c2 73. Rg1 Kxd6 74. Kc3 c1=Q+ 75. Rxc1 Bxc1 76. Kxb3 Ke6 77. h6 Bxh6 {Black had all chances to win.  Weighted Error Value: White=0.21/Black=0.23} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.09"]
[Round "4.3"]
[White "Yip, Carissa"]
[Black "Krush, Irina"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2402"]
[BlackElo "2429"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,45,0,0,3,0,0,0,21,0,22,14,43,43,41,16,75,46,49,40,48,43,51,22,22,22,19,22,54,47,329,329,326,302]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. O-O Nc6 7. Be3 cxd4 8. Nxd4 Nxd4 {B12: Caro-Kann: Advance Variation.} 9. Qxd4 Ne7 $1 10. Qa4+ Nc6 $1 {The position is equal.} 11. c4 {[#] Black must now prevent cxd5.} dxc4 $146 (11... d4 $5 {[%cal Rd4e3]} 12. Bf3 dxe3 13. Bxc6+ bxc6 14. Qxc6+ Ke7 15. Qb7+ Ke8 16. Qc6+ Ke7 17. Qb7+ Ke8 18. Qc6+ Ke7 $11) ({Predecessor:} 11... d4 12. Rd1 Bc5 13. b4 Bxb4 14. Bf3 Qd7 15. Bxc6 Qxc6 16. Qxb4 dxe3 17. fxe3 Rc8 {0-1 (35) Beikert,G (2432)-Hera,I (2533) Germany 2011}) 12. Qxc4 Be7 13. Nc3 O-O 14. f4 h6 (14... Bc2 $11) 15. Rfd1 Qa5 16. Rd7 Rfc8 {[#] Threatens to win with ...Nxe5.} 17. Qb5 {And now Qxa5 would win.} Bb4 18. Rc1 ({Avoid the trap} 18. Rxb7 $2 Bxc3 19. Qxa5 Bxa5 $19) ({Wrong is} 18. Qxb7 $2 Rab8 $19) 18... Bxc3 19. Rxc3 Qxb5 20. Bxb5 Be4 21. Bf1 Nb4 $2 {[%mdl 8192] [#]} (21... Rab8 $14) 22. Rxc8+ $18 Rxc8 23. Rd4 {[%mdl 64] Double Attack.  Weighted Error Value: White=0.09/Black=0.40} ({Stronger than} 23. Bxa7 Rc1 $11) 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.09"]
[Round "4.4"]
[White "Paikidze, Nazi"]
[Black "Nemcova, Katerina"]
[Result "1/2-1/2"]
[ECO "D43"]
[WhiteElo "2374"]
[BlackElo "2331"]
[Annotator "RC"]
[PlyCount "95"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:03]} d5 {[%emt 0:00:07]} 2. Nf3 {[%emt 0:00:10]} Nf6 {[%emt 0:00:09]} 3. c4 {[%emt 0:00:07]} e6 {[%emt 0:00:10]} 4. Nc3 {[%emt 0:00:08]} c6 {[%emt 0:00:04]} 5. Qd3 {[%emt 0:00:07]} dxc4 {[%emt 0:12:28]} 6. Qxc4 {[%emt 0:00:07]} b5 {[%emt 0:00:17]} 7. Qd3 {[%emt 0:00:06]} a6 {[%emt 0:05:39]} 8. g4 {[%emt 0:00:11]} c5 {[%emt 0:02:49]} 9. g5 {[%emt 0:00:42]} Nd5 {[%emt 0:15:43]} 10. Nxd5 {[%emt 0:00:44]} Qxd5 {[%emt 0:16:24]} 11. e4 {[%emt 0:00:14]} Qd7 {[%emt 0:02:05]} 12. dxc5 {[%emt 0:05:50]} Qxd3 {[%emt 0:02:31]} 13. Bxd3 {[%emt 0:00:06]} Bxc5 {[%emt 0:00:10]} 14. Ke2 {[%emt 0:05:46]} Nc6 {[%emt 0:06:09]} 15. Be3 {[%emt 0:03:27]} Bxe3 {[%emt 0:01:05]} 16. Kxe3 {[%emt 0:00:07]} Bb7 {[%emt 0:01:52]} 17. a4 {[%emt 0:24:17]} bxa4 {[%emt 0:11:26]} 18. Rxa4 {[%emt 0:03:24]} h6 {[%emt 0:03:47]} 19. Rc1 {[%emt 0:09:30]} hxg5 {[%emt 0:05:31]} 20. Bxa6 {[%emt 0:01:15]} Rxa6 {[%emt 0:00:27]} 21. Rxa6 {[%emt 0:00:06]} Bxa6 {[%emt 0:00:02]} 22. Rxc6 {[%emt 0:00:06]} Rh3 {[%emt 0:01:48]} 23. Rxa6 {[%emt 0:02:45]} g4 {[%emt 0:00:04]} 24. Ra8+ {[%emt 0:23:50]} Ke7 {[%emt 0:00:36]} 25. Ra7+ {[%emt 0:01:22]} Kf6 {[%emt 0:01:38]} 26. Ra3 {[%emt 0:14:19]} Rxf3+ {[%emt 0:00:33]} 27. Ke2 {[%emt 0:00:10]} Rf4 {[%emt 0:00:32]} 28. Ke3 {[%emt 0:01:17]} g5 {[%emt 0:01:13]} 29. Rc3 {[%emt 0:00:50]} Rf3+ {[%emt 0:00:34]} 30. Ke2 {[%emt 0:00:07]} Rf4 {[%emt 0:00:28]} 31. Ke3 {[%emt 0:01:07]} Kg6 {[%emt 0:05:03]} 32. Ra3 {[%emt 0:00:51]} Rf3+ {[%emt 0:00:53]} 33. Ke2 {[%emt 0:00:01]} Rf4 {[%emt 0:00:06]} 34. Ke3 {[%emt 0:02:09]} Kh5 {[%emt 0:00:14]} 35. Ra7 {[%emt 0:00:49]} Kh4 {[%emt 0:03:06]} 36. b4 {[%emt 0:01:03]} Kh3 {[%emt 0:00:04]} 37. Ra5 {[%emt 0:00:53]} Rf3+ {[%emt 0:01:04]} 38. Ke2 {[%emt 0:00:32]} f5 {[%emt 0:02:02]} 39. exf5 {[%emt 0:00:38]} exf5 {[%emt 0:00:04]} 40. Kf1 {[%emt 0:00:10]} Rb3 {[%emt 0:00:57]} 41. Rxf5 {[%emt 0:01:59]} Rb1+ {[%emt 0:04:23]} 42. Ke2 {[%emt 0:01:10]} Rxb4 {[%emt 0:01:18]} 43. Rxg5 {[%emt 0:00:31]} Kxh2 {[%emt 0:00:12]} 44. Kf1 {[%emt 0:02:33]} Rb1+ {[%emt 0:00:11]} 45. Ke2 {[%emt 0:00:04]} Rb4 {[%emt 0:00:03]} 46. Kf1 {[%emt 0:00:04]} Rb1+ {[%emt 0:00:09]} 47. Ke2 {[%emt 0:00:04]} Rb4 {[%emt 0:00:02]} 48. Kf1 {[%emt 0:00:21]} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.09"]
[Round "4.5"]
[White "Eswaran, Ashritha"]
[Black "Cervantes Landeiro, Thalia"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2244"]
[BlackElo "2175"]
[Annotator "TA"]
[PlyCount "159"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,159,33,13,17,-6,0,0,12,0,10,4,20,-7,1,-2,20,22,31,7,32,21,18,23,56,0,39,0,0,0,0,0,5,6,7,0,0,0,0,0,0,0,0,5,22,17,35,13,10,8,21,0,9,0,0,0,0,0,0,0,0,0,0,0,75,0,0,-44,-51,-45,-8,-8,-8,-23,0,0,0,0,0,0,0,0,0,-9,-9,-28,-34,-64,-70,-71,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,10,20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 d5 3. b3 g6 4. Bb2 Bg7 5. c4 c6 6. Bg2 O-O 7. O-O Re8 {7...a5 is the modern continuation.} 8. Qc2 a5 {[#] A11: English Opening: 1...c6.} 9. d4 $146 ({Predecessor:} 9. d3 Nbd7 10. cxd5 Nxd5 11. Bxg7 Kxg7 12. d4 N7f6 13. e4 Nb4 14. Qe2 Qb6 15. Na3 Qa6 {1-0 (30) Clemens,C (2235)-Bauer,B (2061) Bergen 2014}) 9... Bf5 10. Qc1 a4 11. Nc3 axb3 12. axb3 Rxa1 13. Bxa1 Qb6 14. Qd1 dxc4 15. bxc4 Qb4 16. Ne5 Ng4 17. Nxg4 Bxg4 18. Qd3 Rd8 19. d5 (19. Ne4 $14) 19... Na6 20. Rb1 (20. Na2 $5 {[%cal Ra2b4]} Qc5 21. Bxg7 Kxg7 22. h3 $14) 20... Qa5 21. h3 Nc5 22. Qc2 Bd7 (22... Bf5 $5 23. e4 $8 Bd7 $11) 23. Bb2 Bf6 24. Kh2 Qa6 25. Nd1 cxd5 {[#] ...d4 is the strong threat.} 26. Bxf6 Qxf6 27. cxd5 Rc8 {Black wants to play ...Bf5.} 28. Qd2 Bf5 29. Rb4 h5 30. e4 Bd7 31. f4 Qa6 32. e5 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 33. Ne3 Qa5 34. Qd4 Na6 35. Rb3 Qa4 36. Qb2 {aiming for e6!} b4 $1 37. f5 gxf5 38. Bf1 Rb8 {[#]} (38... e6 $11) 39. Bxa6 (39. e6 $1 $16 fxe6 40. Bc4) 39... Qxa6 $11 40. Rxb4 (40. Qd2 {seems wilder.} Qa1 41. Nc4 Qf1 42. Ne3 Qf3 43. Ng2) 40... Rxb4 41. Qxb4 Qe2+ (41... Qa2+ {is more complex.} 42. Kg1 Qa1+ 43. Kf2 Qxe5 44. Ng2 Kf8) 42. Ng2 Qxe5 43. Qb7 Qd6 (43... f4 {seems wilder.} 44. gxf4 Qd6 45. Qb3 f6 46. Qf3 Be8) 44. h4 e5 {And now ...f4 would win.} 45. dxe6 fxe6 {Strongly threatening ...Bc6.} 46. Qa8+ Kh7 47. Qf3 Be8 48. Nf4 e5 49. Nh3 Qd2+ 50. Kg1 $1 Qc1+ 51. Kh2 Kg6 (51... Qb2+ $17 52. Nf2 Kg6) 52. Qd5 {The position is equal.} Qc2+ 53. Kg1 Qc1+ 54. Kh2 Qb2+ 55. Kh1 Bf7 (55... Kg7 {is interesting.} 56. Qd6 Qb7+ 57. Kg1 Qa7+ 58. Kh1 Qa8+) 56. Qd6+ Kg7 57. Ng5 Qa1+ (57... e4 {is more complex.} 58. Qe7 Qb1+ 59. Kh2 Qb2+ 60. Kg1 Qc1+) 58. Kh2 Qa2+ (58... e4 {looks sharper.} 59. Qe7 Qf6 60. Qc5 Bg8 61. Qc7+ Kg6) 59. Kg1 Qa7+ (59... e4 {feels hotter.} 60. Qe5+ Kg6 61. Qd6+ Kg7) 60. Kg2 Qa8+ (60... Qe3 {with more complications.} 61. Qc7 Qe2+ 62. Kh1 Qf1+ 63. Kh2 Qe2+) 61. Kh2 Qa2+ 62. Kg1 Qa7+ (62... Qe2 {seems wilder.} 63. Qc7 Qe1+ 64. Kh2 Qe2+ 65. Kh1 Qf1+) 63. Kg2 Qa8+ 64. Kh2 Qe8 65. Nf3 e4 66. Nd4 Qc8 67. Qe5+ Kg6 68. Qe7 Kg7 69. Kg2 e3 70. Qxe3 Qb7+ 71. Kh2 Qe4 72. Qg5+ Kf8 73. Qf6 Kg8 74. Nxf5 {[%csl Gf5][%cal Rf6g7]} Qe2+ 75. Kg1 {[%csl Gf5][%cal Rf6g7]} Qe1+ 76. Kh2 {[%csl Gf5][%cal Rf6g7]} Qf2+ 77. Kh3 {[%csl Gf5][%cal Rf6g7]} Qf1+ 78. Kh2 {[%csl Gf5][%cal Rf6g7]} Qf2+ 79. Kh3 {[%csl Gf5][%cal Rf6g7]} Qf1+ 80. Kh2 {[%csl Gf5][%cal Rf6g7] Weighted Error Value: White=0.07/Black=0.10} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.09"]
[Round "4.6"]
[White "Foisor, Sabina-Francesca"]
[Black "Abrahamyan, Tatev"]
[Result "1-0"]
[ECO "D24"]
[WhiteElo "2205"]
[BlackElo "2344"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,101,7,0,8,0,12,16,20,21,5,2,2,0,0,-13,-9,-17,-17,-12,-13,-23,-16,-20,-2,-24,0,-10,21,11,49,49,56,52,52,55,100,64,51,49,54,11,12,15,210,114,303,298,446,462,452,438,408,374,369,369,360,261,339,260,289,268,268,268,262,229,196,203,1133,866,1118,1125,1087,1055,1125,935,998,1035,849,958,673,256,1136,1125,1101,966,1038,1058,1011,869,962,788,788,659]} 1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. Nc3 dxc4 5. e3 a6 6. a4 b6 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3.} 7. Bxc4 Bb7 8. O-O Bb4 {The position is equal.} 9. Qe2 O-O 10. Rd1 Nbd7 11. Bd2 Qe7 12. Ne5 Nxe5 13. dxe5 Nd7 14. f4 Nc5 15. Be1 Rfd8 16. Rd4 {[#]} Bxc3 $146 ({Predecessor:} 16... Bc6 17. Qg4 Rxd4 18. exd4 Nxa4 19. f5 exf5 20. Qxf5 Bxc3 21. bxc3 b5 22. Bd3 g6 {1-0 (44) Yanev,T (2382)-Guliyev,N (2532) Plovdiv 2012}) 17. bxc3 Rd7 18. Qg4 Bc6 19. Bh4 Qf8 20. f5 exf5 21. Qxf5 {Hoping for e6.} Re8 22. Rad1 {[%cal Rd4d7]} Rxd4 23. exd4 Bxa4 24. Rf1 $36 {[%mdl 2048] White is pushing.} Bb3 25. Be2 Ne6 26. Bxa6 c5 $2 {White now steadily converts the win.} (26... Ra8 $11 {and Black is okay.} 27. Bd3 g6) 27. Bb5 ({Stronger than} 27. Bd3 g6 $11) (27. Qb1 $1 $18 {[%cal Rb1b3]} Ra8 28. Qxb3 Rxa6 29. d5) 27... Rb8 $2 (27... cxd4 $16 {is a better defense.} 28. Bxe8 Qxe8) 28. Qb1 $1 $18 {[%cal Rb1b3]} c4 (28... g5 {keeps fighting.} 29. Qxb3 gxh4) 29. Bd7 {Bxe6 is the strong threat.} Qa3 30. Qf5 {[%mdl 64] Double Attack} Rf8 31. Bxe6 fxe6 32. Qxe6+ {[%mdl 64] Double Attack} Kh8 {intending ...Rxf1+.} 33. Rxf8+ ({And not} 33. Qxb6 Rxf1+ 34. Kxf1 Qc1+ 35. Be1 Qf4+ 36. Ke2 (36. Bf2 Qc1+ {[%mdl 64] Double Attack} 37. Be1 Qf4+ {[%mdl 64] Double Attack} 38. Ke2 Qe4+ 39. Kf2 Qf4+ 40. Kg1 Qe3+ {[%mdl 64] Double Attack} 41. Kf1 Qf4+ $11 {[%mdl 64] Double Attack}) 36... Qe4+ 37. Kf2 Qf4+ 38. Kg1 Qe3+ 39. Kf1 Qf4+ 40. Bf2 Qc1+ 41. Be1 Qf4+ $11) 33... Qxf8 34. Qxb6 h6 35. Qd8 Qxd8 36. Bxd8 {[%mdl 4096] Endgame KB-KB} Bc2 37. d5 Be4 38. d6 Bf5 $2 (38... Kg8 39. e6 Bf5) 39. Kf2 Kg8 40. Ke3 Kf7 41. Kd4 Ke8 {[#]} 42. Be7 $1 Be6 {[#]} 43. Kc5 $1 Kf7 44. Kc6 Ke8 45. Kc7 $2 (45. g3 g6 46. Kc7) 45... g6 $2 {[#]} (45... g5 46. Bf8 h5) 46. Bf8 $1 {[%mdl 512] White is clearly winning.} h5 47. Be7 Bf5 48. Bg5 Bd7 49. g3 Bf5 50. Kc6 Be6 51. Bh4 {Weighted Error Value: White=0.12/Black=0.31} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.11"]
[Round "5.1"]
[White "Cervantes Landeiro, Thalia"]
[Black "Paikidze, Nazi"]
[Result "0-1"]
[ECO "A86"]
[WhiteElo "2175"]
[BlackElo "2374"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,74,26,31,28,40,24,24,24,23,35,33,-55,-68,-64,-70,-63,-54,-74,0,0,4,0,0,0,18,10,5,23,11,39,67,69,64,72,104,100,112,19,34,0,0,0,-7,0,-4,-46,-35,-40,-37,-38,-31,-83,-58,-760,-759,-755,-754,-29991,-29992,-29998,-29999]} 1. d4 f5 2. c4 Nf6 3. g3 g6 4. Bg2 Bg7 5. Nh3 O-O 6. O-O d6 7. d5 {7.Nc3 is vanishing.} Na6 8. Nc3 Nc5 9. Be3 {A86: Dutch Defence: Leningrad System: Unusual lines and 5 Nh3.} e5 10. dxe6 Nxe6 11. Ng5 {White has an edge.} c6 12. Nxe6 Bxe6 {[#]} 13. Qb3 $146 (13. b3 $14) ({Predecessor:} 13. b3 Qa5 14. Rc1 Rad8 15. Qd2 Nh5 16. Bd4 Be5 17. e3 c5 18. Bxe5 dxe5 19. Qb2 {1-0 (36) Csonka,B (2412)-Grover,S (2491) Pune 2014}) 13... Qe7 $15 14. Rad1 Ng4 15. Bf4 Ne5 16. Qb4 Rfd8 (16... Nxc4 $17 {And now ...a5 would win.} 17. Bxd6 Nxd6 18. Qxd6 Qxd6 19. Rxd6 Kf7) 17. b3 $11 g5 18. Bd2 Rd7 19. Qa3 Rf8 20. Qc1 h6 21. f4 gxf4 22. Bxf4 Kh7 23. e4 Ng6 24. Be3 Qd8 25. Bh3 {[%cal Re4f5]} ({Much weaker is} 25. Bxa7 $6 Qa5 $11) 25... Rdf7 26. Qc2 (26. c5 $16) 26... Qe7 $1 27. Bf4 ({Reject} 27. Bxa7 f4 $15) 27... fxe4 28. Bxe6 Qxe6 29. Nxe4 d5 $1 {[%cal Rd5e4]} 30. Nc5 Qg4 {[%cal Rf7f4]} 31. Nd3 Bd4+ 32. Kh1 {White wants to play cxd5.} Re8 {Threatens to win with ...Re2.} 33. Rde1 {[#]} (33. Rd2 $15) 33... Rfe7 $1 $40 {[%cal Re7e2][%mdl 128] Black attacks.} 34. cxd5 $2 {[%mdl 8192] [#] This move loses the game for White.} (34. Rxe7+ $15 Rxe7 35. Ne1) 34... Re2 $1 $19 {[%cal Re2c2]} 35. Rxe2 Rxe2 36. Qd1 Qh5 {[%csl Gh5][%cal Re2h2][%mdl 64] Double Attack} 37. g4 Qxd5+ {Weighted Error Value: White=0.63/Black=0.07} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.11"]
[Round "5.2"]
[White "Lee, Megan"]
[Black "Foisor, Sabina-Francesca"]
[Result "0-1"]
[ECO "C92"]
[WhiteElo "2211"]
[BlackElo "2205"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,92,13,10,-30,44,25,48,26,23,14,8,-60,-55,-57,-70,-98,-37,-45,-35,-31,-37,-52,-37,-45,-39,-129,-133,-127,-112,-145,-128,-153,-147,-155,-155,-160,-137,-165,-159,-151,-141,-243,-235,-243,-241,-226,-245,-352,-352,-367,-351,-463,-401,-412,-400,-445,-440,-665,-497,-536,-551,-539,-524,-865,-823,-1856,-1832,-1694,-1675,-29991,-29992]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 9. h3 Bb7 10. d4 Re8 11. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3][%mdl 32]} Bf8 12. Bc2 {12.a3 gains popularity.} g6 13. Nf1 {C92: Closed Ruy Lopez: 9...Be6, Karpov and Flohr-Zaitsev Variations.} Bg7 (13... exd4 $11 14. cxd4 Nb4) 14. d5 $14 {[#]} Na5 $146 ({Predecessor:} 14... Nb8 15. b3 c6 16. c4 cxd5 17. cxd5 Nbd7 18. Be3 Rc8 19. N1d2 Qc7 20. Rc1 Qa5 21. Bb1 Rxc1 22. Qxc1 Rc8 23. Qb2 Nh5 24. b4 Qd8 25. Nb3 Nb6 {½-½ (55) Mazur,S (2416)-Molnar,E (2240) Tornelo INT 2021}) 15. Ne3 {White is slightly better.} c6 16. b4 cxd5 17. exd5 (17. bxa5 $11 dxe4 18. Nd2) 17... Nc4 $15 18. Nxc4 bxc4 19. Ba4 Rf8 (19... Re7 $17 20. Bg5 a5) 20. Bg5 $1 Qc7 ({Don't play} 20... Bxd5 21. Bxf6 Bxf3 22. Bxd8 $14) 21. Bxf6 Bxf6 22. Nh2 Bg7 23. Qd2 f5 24. f3 {Black continues to play with concentration.} (24. Nf3 $15) 24... a5 $17 {[#] Threatens to win with ...axb4.} 25. a3 Ra7 {And now ...axb4 would win.} 26. b5 Raa8 {[%cal Ba7a8,Ba8c8,Bc8c5][%mdl 32]} 27. Kh1 Qb6 28. Nf1 Rac8 29. Rad1 Rc5 30. Qa2 Rfc8 ({Avoid the trap} 30... Bxd5 $2 {[#]} 31. Rxd5 $1 {[%mdl 512]} Rxd5 32. Qxc4 $18) ({Don't blunder} 30... Rxd5 $2 31. Qxc4 Bh6 32. Rxd5 $18) 31. Ne3 f4 32. Ng4 (32. Nf1 $17 {was called for.}) 32... Rxd5 $19 33. Rxd5 Bxd5 34. Qd2 Bf7 35. Rd1 (35. Qf2 $142 Qxf2 36. Nxf2) 35... h5 36. Nf2 d5 37. Rb1 Bf8 38. Re1 Re8 39. Ra1 Bc5 40. Nd1 (40. Rf1 $142) 40... d4 41. Qe2 d3 42. Qe4 {White hopes to continue with Nb2.} Qd6 {Hoping for ...Bd5.} 43. Qc6 e4 44. fxe4 Qxc6 45. bxc6 Rxe4 {( -> ...Re1+)} 46. Nb2 d2 {Weighted Error Value: White=0.74/Black=0.14} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.11"]
[Round "5.3"]
[White "Nemcova, Katerina"]
[Black "Sharevich, Anna"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2331"]
[BlackElo "2276"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,147,18,23,22,37,33,45,10,35,33,54,49,52,55,52,59,62,53,52,47,50,22,37,22,78,22,23,16,18,22,31,29,33,7,19,6,6,6,6,6,6,0,8,0,6,0,22,0,6,6,14,15,64,44,47,47,50,50,55,0,54,33,46,36,29,18,14,0,0,0,0,0,0,0,0,0,0,0,94,94,94,94,94,94,94,94,94,104,108,56,80,8,8,8,8,8,8,8,8,8,8,8,8,8,14,16,24,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 d6 5. O-O Nf6 6. Re1 {B40: Sicilian: 2...e6, Unusual lines.} e5 7. c3 Be7 8. h3 {White is slightly better.} Bd7 9. d4 cxd4 10. cxd4 {[#]} Rc8 $146 ({Predecessor:} 10... Qc8 11. Kh2 h5 12. dxe5 dxe5 13. Nc3 Ng4+ 14. Kg1 Nf6 15. Nd5 Bd8 16. Ng5 h4 {1-0 (45) Rotstein,A (2515)-Lanka,Z (2469) Austria 2011}) 11. Nc3 O-O 12. Be3 a6 13. Rc1 b5 14. a3 Re8 15. Nd5 (15. Re2 {is interesting.} h6 16. Rd2 Bf8 17. Rdc2 Na5 18. Nd2) 15... exd4 16. Nxd4 Nxd4 (16... Nxd5 $11 {remains equal.} 17. exd5 Nxd4 18. Bxd4 (18. Qxd4 Bf6 $11) 18... Bg5 19. Rxc8 Qxc8) 17. Bxd4 (17. Nxe7+ $16 Qxe7 18. Qxd4 (18. Bxd4 Rxc1 19. Qxc1 d5 $16)) 17... Nxd5 $11 18. exd5 Rxc1 19. Qxc1 Bf8 20. Rxe8 Qxe8 21. h4 h6 22. Bc3 Qe2 23. Qf4 Qd1+ 24. Kh2 Qe2 25. Qd4 Bg4 26. Qf4 Bd7 27. Bd4 Qe1 28. Bc3 Qe2 29. Be4 Qg4 30. Qe3 f5 31. Bf3 Qc4 32. Kg2 Qc8 33. Bh5 Qc4 34. Bf3 (34. Qf3 {with more complications.} Be7 35. Bg6 Qg4 36. h5 Bd8 37. Qe3) 34... Qc8 $1 35. Bb4 Qe8 36. Qb6 g5 37. hxg5 hxg5 38. Bxd6 ({Don't blunder} 38. Qxa6 $2 g4 $19) 38... g4 39. Bd1 $36 {[%mdl 2048] And now Bxf8 would win. Black is under pressure.} Qe4+ {[%mdl 64] Double Attack} 40. Kh2 {Black must now prevent Bf4.} Qxd5 {[%mdl 64] Double Attack} 41. Bxf8 Kxf8 42. Qd8+ Kg7 43. Qg5+ Kf7 {[#]} (43... Kf8 $11 44. Bc2 Qe6) 44. Bxg4 $1 $16 {[%mdl 64] Pin} Qd4 45. Bh5+ Ke6 46. Qg6+ Ke7 47. Kg2 Qxb2 48. Qxa6 f4 49. gxf4 (49. Qa7 $16) 49... Qc3 {[#]} 50. Qg6 (50. f5 $1 $16) 50... Qh3+ $1 $11 51. Kg1 Qxa3 52. Qg5+ Kd6 53. Qe5+ (53. Qh6+ {looks sharper.} Kc7 54. f5 Bc6 55. Qg7+ Kb6 56. Qd4+) 53... Kc6 54. Bg6 {Strongly threatening Be4+.} Qd6 $1 {[%cal Rd6g6]} 55. Be4+ Kc7 $1 56. Kf1 Bh3+ 57. Ke1 {aiming for Qc3+.} Bd7 58. f3 b4 {The position is equal.} 59. Qa5+ (59. Kf2 {seems wilder.} Be6 60. Ke3 b3 61. Qa5+ Qb6+ 62. Qxb6+ Kxb6 63. f5) 59... Qb6 60. Qxb6+ Kxb6 {[%mdl 4096] Endgame KB-KB} 61. Kd2 Kc5 62. f5 Be8 63. f6 Kd6 64. Kc2 Ke6 65. Kb3 Kxf6 66. Kxb4 Ke5 67. Kc3 Kf4 68. Kd2 Bb5 69. Ke1 Bc4 70. Kf2 Bb5 71. Ke1 Bc4 72. Kf2 Bb5 73. Ke1 Bc4 74. Kf2 {Weighted Error Value: White=0.11/Black=0.09} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.11"]
[Round "5.4"]
[White "Tokhirjonova, Gulrukhbegim"]
[Black "Yip, Carissa"]
[Result "1-0"]
[ECO "D76"]
[WhiteElo "2322"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,109,0,3,9,4,5,25,16,20,32,26,22,65,56,80,74,91,81,81,79,93,79,39,102,77,78,60,58,54,52,150,165,255,252,232,152,140,140,208,173,217,225,234,215,214,221,284,278,360,362,326,351,354,363,459,345,521,520,687,461,538,561,553,550,543,541,514,449,548,552,627,600,1197,1161,1280,1134,1037,859,1326,1316,1164,1621,1645,1652,1487,1402,1573,1401,1551,1439,29991,29986]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nb6 7. Nf3 Nc6 8. e3 O-O 9. O-O Re8 10. h3 e5 11. d5 {D76: Fianchetto Grünfeld: Main Line with 7...Nb6.} Na5 12. Qc2 Bd7 13. Rd1 {White has an edge.} Qc8 14. Kh2 c6 {[#]} 15. dxc6 $146 ({Predecessor:} 15. d6 Qb8 16. Ne4 Bf5 17. b3 c5 18. Ba3 Bxe4 19. Qxe4 f5 20. Qh4 Nd7 21. Ng5 h6 22. Bd5+ Kh8 23. Ne6 Nc6 24. Bxc6 bxc6 25. Nc7 e4 26. Bb2 Qb7 {1-0 (26) Badelka,O (2428)-Nikologorsky,M (2215) Moscow 2021}) 15... Bxc6 16. e4 Qe6 17. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Nac4 {[#]} 18. a4 $1 {[%cal Ra4a5] Strongly threatening a5.} a5 19. b5 Bd7 20. Nd5 {Threatens to win with Ng5.} Rec8 21. Ng5 Qe8 22. Nxb6 Nxb6 23. Qd3 $36 {[%mdl 2048] White fights for an advantage.} Rd8 {[#] ...Bg4! is the strong threat.} 24. Qe3 Nc8 (24... Nc4 $14 25. Qb3 Be6) 25. Bb2 $16 Bh6 (25... h6 $142) 26. h4 $18 Bg7 27. Bf1 {And now Bc4 would win.} h6 28. Nf3 Qe6 (28... f6 $16 29. Bc4+ Kh7) 29. Ba3 Qe8 30. Bc4 Bg4 31. Bd5 Rd7 32. Bb3 Rd8 33. Kg2 Ne7 34. Rxd8 Rxd8 35. Nh2 Bc8 36. Rc1 Qd7 37. Nf3 Re8 (37... Kh7 $142 38. Bxf7 Nc6 39. Bxg6+ Kxg6) 38. Kg1 Rd8 39. Bc5 Rf8 40. Rd1 Qe8 41. Bb6 Bd7 42. Bxa5 Kh7 43. Bc3 Bg4 {If Black can now play ...f5 this consolidates a bit.} 44. Rc1 f6 45. Bb4 f5 46. Rc7 f4 47. gxf4 exf4 48. Qd3 Ng8 49. Bxf8 Qxf8 50. Ne5 Nf6 51. Nxg4 Nxg4 52. Qd7 Ne5 53. Qe7 Nf3+ 54. Kh1 {White wants to mate with Qxf8.} Qh8 55. Rxb7 {Weighted Error Value: White=0.14/Black=0.50} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.11"]
[Round "5.5"]
[White "Abrahamyan, Tatev"]
[Black "Eswaran, Ashritha"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2344"]
[BlackElo "2244"]
[Annotator "TA"]
[PlyCount "172"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,172,20,25,18,15,4,14,11,16,9,18,1,63,63,90,87,90,79,103,85,114,106,130,128,138,100,134,134,133,107,156,155,164,131,135,106,110,90,98,31,160,67,170,71,100,82,81,64,103,83,93,86,86,86,87,77,73,75,95,10,108,29,131,73,103,106,104,91,82,89,139,121,159,13,11,24,43,42,214,212,204,0,0,0,188,189,200,76,144,79,89,92,76,68,188,181,189,0,68,68,68,68,179,164,156,165,69,33,253,268,300,293,325,334,326,318,325,297,316,312,305,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,220,0,220,0,220,0,220]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 b6 5. e4 c5 $1 {[%cal Rc5d4]} 6. d5 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} Qe7 7. Be2 {With the idea e5.} d6 8. Nf3 O-O 9. O-O Bxc3 10. bxc3 e5 {[#]} (10... exd5 $11 11. exd5 Bg4) 11. a4 $146 ({Predecessor:} 11. h3 Nh5 12. Bg5 f6 13. Be3 g6 14. Qd2 Nd7 15. Kh2 Ng7 16. g4 Rf7 17. Rg1 {0-1 (74) Maiti,M (2068)-Kovalev,V (2648) Lichess.org INT 2020}) 11... a5 12. Rb1 Ra6 13. g3 Ne8 14. Nh4 Bh3 15. Re1 g6 16. Bh6 Ng7 17. Bf1 Bc8 18. Bd3 Bg4 19. f3 Bd7 20. Ng2 f6 21. f4 Qe8 22. Ra1 Ra7 23. Qb3 Rb7 24. Bc2 (24. Ne3 $16) 24... Qd8 (24... exf4 $14 25. gxf4 (25. Nxf4 g5 $11) 25... g5) 25. Re2 (25. f5 $1 $16) 25... Bc8 (25... Bh3 $14) 26. Rb1 (26. f5 $1 $18 {is more deadly.}) 26... Re8 27. Rf2 exf4 28. gxf4 ({Reject} 28. Nxf4 Nd7 $11) 28... Bg4 29. Ne3 Bh5 30. Nf1 $36 {[%mdl 2048] White is really pushing.} Bg4 31. Ng3 Nh5 32. Bd3 Nxg3 33. hxg3 Nd7 34. Kg2 (34. Qc2 $1 $16) 34... Nf8 (34... f5 $1 $11) 35. Qb2 ({White should play} 35. Re1 $16) 35... Qd7 (35... f5 $11 {keeps the balance.}) 36. Qc2 ({White should try} 36. e5) 36... Bh3+ 37. Kh2 $1 Bg4 38. Rh1 f5 39. Kg2 Qc8 40. exf5 gxf5 41. Bg5 (41. Be2 $16) 41... Re3 $11 42. Rh6 Ng6 43. Be2 {Hoping for Bxg4.} Bxe2 (43... Rf7 $1 $14) 44. Rxe2 $18 Qe8 45. Kf2 (45. Rxe3 $18 Qxe3 46. Bf6) 45... Rxe2+ $11 46. Qxe2 Qxe2+ (46... Qxa4 $11 {and Black is okay.} 47. Qe6+ {[%mdl 64] Double Attack} Rf7) 47. Kxe2 {[%mdl 4096] Endgame KRB-KRN} Rb8 48. Kd3 (48. Rh1 $18) 48... Kg7 {[#]} (48... Re8 $142) 49. Rh2 (49. Ke3 $142 $1) 49... Re8 $16 50. Bh6+ Kf7 51. Rh1 Rc8 (51... Rh8 $1 $14) 52. Bg5 $18 Kg7 53. Bh6+ (53. Ke3 $18) 53... Kf7 $14 54. Rb1 Rb8 55. Rb2 Rb7 (55... Ne7 $14) 56. Bg5 $18 Rb8 57. Rh2 Kg7 (57... Rh8 $18 58. Ke3 Re8+ 59. Kf3 Kg8) 58. Re2 {Strongly threatening Re6.} Rb7 $2 ({Better is} 58... Rf8 $1 $14) 59. Re6 Rd7 {[#] Now ...h6 and Black clings on.} 60. Re8 $1 h6 {[#]} 61. Rd8 $1 Rf7 62. Bh4 Nxh4 63. gxh4 {KR-KR} Kg6 {intending ...Rf6.} 64. Rxd6+ {[%mdl 64] Double Attack} Rf6 65. h5+ Kf7 66. Rd7+ Ke8 67. Rb7 Kd8 68. Ke3 Ke8 69. Rg7 Kf8 70. Rg6 Ke7 71. Kf3 Rd6 72. Rg7+ Kf8 73. Rc7 Ke8 74. Kg3 Rf6 75. Rb7 Kf8 76. Ra7 Ke8 77. Kh4 Kf8 78. Kh3 Ke8 79. Kg2 Kf8 80. Kf2 Ke8 81. Ra8+ Ke7 82. Rb8 Kf7 83. Rb7+ Ke8 84. Rb8+ Kf7 $1 85. Rb7+ Ke8 86. Rb8+ Kf7 $1 {Weighted Error Value: White=0.31/Black=0.42} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.11"]
[Round "5.6"]
[White "Krush, Irina"]
[Black "Zatonskih, Anna"]
[Result "1-0"]
[ECO "D50"]
[WhiteElo "2429"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,71,13,7,25,24,29,23,28,32,37,25,31,12,39,36,58,76,72,54,54,57,159,117,108,113,121,91,147,142,143,144,139,140,192,115,130,133,121,97,85,90,86,82,127,129,135,141,173,170,278,263,487,461,1108,1108,29985,29986,29986,29987]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c5 5. cxd5 cxd4 6. Qxd4 exd5 7. Bg5 Be7 8. e3 Nc6 {D50: Queen's Gambit Declined: Dutch-Peruvian Gambit.} 9. Qd3 Be6 10. Be2 {[#]} Qb6 $146 {Hoping for ...Ne4.White has an edge.} ({Predecessor:} 10... h6 11. Bh4 O-O 12. O-O Qb6 13. a3 Qb3 14. Nd2 Qb6 15. Nf3 Qb3 16. Nd2 Qb6 17. Nf3 Qb3 {½-½ (18) Zhao,X (2506)-Ju,W (2558) Teheran 2016}) 11. O-O Rd8 12. Nb5 O-O 13. h3 Rd7 14. Nbd4 Qxb2 15. Bxf6 gxf6 16. Rfb1 Qa3 17. Rb3 $40 {[%mdl 128] White mounts an attack.} Qa4 ({Black should play} 17... Qd6 $14) 18. Qb1 Nxd4 19. Nxd4 Rc7 20. Rxb7 Qd7 ({Black should try} 20... Rxb7 21. Qxb7 Qb4) 21. Rxc7 $16 Qxc7 22. Bd3 Bc5 23. Bxh7+ Kg7 (23... Kh8 $16 {might work better.}) 24. Bf5 (24. Nxe6+ $18 fxe6 25. Qg6+ Kh8 26. Rc1 $1) 24... Bxd4 25. exd4 Re8 26. Qc2 Qf4 {[#]} 27. Bxe6 Rxe6 {[%mdl 4096] Endgame KQR-KQR} 28. Rd1 Re4 29. Qd3 Qd6 30. Qd2 Qa6 31. Rb1 Re2 (31... Qc4 $142) 32. Qf4 $18 Qd3 $2 (32... f5 {is a better defense.} 33. Rb3 Re6) 33. Rb3 Qd1+ (33... Qa6 $142 34. Qg3+ Kf8) 34. Kh2 Re6 35. Rg3+ Kf8 36. Qb8+ {[%mdl 64] Double Attack.  Weighted Error Value: White=0.09/Black=0.62} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.12"]
[Round "6.1"]
[White "Eswaran, Ashritha"]
[Black "Lee, Megan"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2244"]
[BlackElo "2211"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,51,0,1,41,46,88,15,13,12,47,43,71,75,71,79,82,93,151,138,119,119,207,189,184,172,187,186,234,241,550,77,327,270,271,209,178,227,738,747]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. Nbd2 O-O 7. e4 c6 8. Re1 Qd6 {B10: Caro-Kann: 2 d3 and 2 c4.} 9. c3 f5 {[#]} 10. d4 $146 (10. exd5 $16 {Threatens to win with Nc4.} cxd5 11. c4) ({Predecessor:} 10. b3 fxe4 11. dxe4 Bg4 12. exd5 cxd5 13. Nc4 Qc7 14. Ne3 Bxf3 15. Bxf3 Rxf3 16. Qxf3 {0-1 (47) Kuporosov,V (2448)-Potapov,A (2329) Zvenigorod 2008}) 10... fxe4 $11 {The position is equal.} 11. Nxe5 Bxe5 12. dxe5 Qxe5 13. f3 {[%cal Rf3e4]} Qf6 14. Kh1 exf3 15. Nxf3 {Hoping for Bg5.} Nf5 (15... Bg4 $142) 16. Bg5 {[%mdl 1024] White has strong compensation.} Qg7 17. Qd2 h6 (17... h5 $16) 18. Bf4 $18 g5 19. Be5 Qg6 {[#]} 20. c4 $1 $36 {[%mdl 2048] White is in control.} Be6 21. g4 Ne7 (21... Ng7 22. Bxg7 Kxg7) 22. Qb4 $2 (22. Bc3 $18 {is the precise move to win.} Na6 23. Qd4) 22... c5 {Loses the game.} (22... Nd7 $16 {was necessary.}) 23. Qxc5 Nbc6 24. Nd4 Bxg4 {[#]} 25. Bd6 $1 {[%cal Rd6e7]} b6 $2 (25... Nxd4 26. Rxe7 Ne6 27. Qxd5 Rae8 28. Rxe8 (28. Qxb7 Rxe7 29. Bxe7 Rf7 $16) (28. Rxb7 Rf5 $16) (28. Be4 Qf6 $18) 28... Rxe8) 26. Nxc6 {Weighted Error Value: White=0.36/Black=0.55} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.12"]
[Round "6.2"]
[White "Zatonskih, Anna"]
[Black "Tokhirjonova, Gulrukhbegim"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2422"]
[BlackElo "2322"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,93,28,22,0,12,20,8,18,21,-53,70,77,82,67,81,71,77,70,149,75,111,101,137,139,146,106,152,154,220,206,235,225,252,236,262,259,266,250,260,229,325,312,307,319,387,349,397,359,440,295,300,297,276,279,285,0,265,0,272,248,292,284,355,224,384,365,685,355,389,381,866,443,778,647,2603,1338,29980,1179,29975,29976]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 c5 8. Nf3 Qa5 9. Nd2 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} cxd4 {[#] 9...Nd7 is setting a new trend.} 10. Nc4 Qd8 ({Don't blunder} 10... Qxc3+ $2 11. Bd2 $18) 11. cxd4 {The position is equal.} O-O 12. Be2 {[#]} (12. Rc1 $11) 12... e6 $146 (12... Nc6 $15 13. e5 Qc7) ({Predecessor:} 12... b5 13. Ne5 Bb7 14. O-O Bxe4 15. Bxb5 a6 16. Be2 Nc6 17. Nxc6 Bxc6 18. Bf3 Bd5 {0-1 (46) Angun,B (2326)-Moussard,J (2635) Tornelo INT 2021}) 13. O-O $14 Nc6 {[%cal Rc6d4]} 14. e5 Qe7 15. Qc1 Nb4 16. Nd6 Bd7 {[#]} (16... Nd5 $14) 17. Nxb7 ({White should try} 17. Rb1 $1 {[%cal Rb1b4]} a5 18. a3) 17... Rfc8 18. Nc5 Bc6 19. Qd2 Nd5 20. Rac1 Rab8 21. Bg5 f6 (21... Qf8 $16 22. Rc2 h6) 22. Bh4 $18 g5 23. exf6 Bxf6 24. Bg3 Rb4 25. Nb3 Bb7 26. Rxc8+ Bxc8 27. Rc1 Bb7 (27... Bd7 $142 28. Bf3 a5) 28. Bc4 Rb6 29. Nc5 h6 30. Re1 Qf7 31. h3 Bc8 32. Bb3 Bg7 33. Rc1 Rc6 34. Ba4 Rb6 35. Bb3 Rc6 $1 36. Ba4 Rb6 37. Be5 Bxe5 38. dxe5 Qf4 39. Qe1 Ba6 $2 (39... Kh8 40. Qd1 Qf8) 40. Bb3 Bc8 (40... Bb7 41. Rd1 Kf7 42. Nxb7 Rxb7 43. Bxd5 exd5 44. e6+ Kf6 45. Rxd5 Rc7) 41. Rc4 Qf8 42. Qe4 Nf4 $2 (42... Kg7 43. Na4 Rb7) 43. Rc2 a5 (43... Qe8 $142 44. g3 Nd5 45. Nxe6 {[%mdl 64] Remove Defender} Bxe6 46. Bxd5 Bxd5 47. Qxd5+ Qf7 48. Qd8+ Qf8) 44. Qa8 {Hoping for Ne4.} Rb5 45. Ne4 {Nf6+ would kill now.} Ne2+ 46. Rxe2 (46. Kh1 $142 Bd7 47. Nf6+ {[%mdl 64] Double Attack} Kg7 48. Qe4 Rxe5 49. Nh5+ Kf7 50. Qh7+ Ke8 51. Rc7) 46... Rxe5 {[#]} 47. Nf6+ $1 {[%mdl 512] Weighted Error Value: White=0.58/Black=0.72} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.12"]
[Round "6.3"]
[White "Foisor, Sabina-Francesca"]
[Black "Krush, Irina"]
[Result "1/2-1/2"]
[ECO "A38"]
[WhiteElo "2205"]
[BlackElo "2429"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,102,22,20,-1,20,16,27,20,35,21,48,56,54,54,55,48,55,47,53,55,55,47,48,47,66,48,51,54,79,82,85,81,85,60,67,74,83,75,76,64,66,59,84,92,80,80,91,79,91,79,79,79,63,58,64,64,79,0,62,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 c5 5. Bg2 cxd4 6. Nxd4 Nc6 7. O-O O-O 8. Nc3 Qa5 9. Nc2 {9.e3 is the modern continuation.} d6 10. Rb1 {A38: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3 Nf6.} Bd7 11. Qd2 {[#]} Rac8 $146 ({Predecessor:} 11... Rfc8 12. b3 Rab8 13. Rd1 a6 14. b4 Qh5 15. Nd5 Nxd5 16. cxd5 Ne5 17. Ne3 Ba4 18. Rf1 Nc4 19. Nxc4 Rxc4 20. Bf3 Qf5 21. Rb3 Bxb3 22. axb3 Rc7 23. b5 {0-1 (23) Fernandez,C-Jansa,V Havana 1967}) 12. b3 {White has an edge.} Qh5 13. Qg5 Bf5 14. e4 Bd7 15. Qxh5 Nxh5 16. Bb2 Nf6 17. Rfd1 Rfd8 18. h3 Ne8 19. Nd5 Bxb2 20. Rxb2 e6 21. Nc3 e5 22. Ne3 Be6 23. f4 f6 24. f5 Bf7 25. Rbd2 a6 26. Kf2 g5 27. Bf1 h5 28. Be2 Nd4 29. Nc2 (29. Bd3 {is more complex.} Kf8 30. Ne2 Nc6 31. h4 gxh4 32. gxh4 Nc7 33. Nc3) 29... Nxc2 30. Rxc2 Kf8 31. Rdc1 Ng7 32. a4 a5 33. Ke3 b6 34. Rd2 Ke7 35. Rcd1 Rc6 36. Nb5 Ne8 37. Nc3 (37. Kf2 $16) 37... Nc7 ({Black should play} 37... Ng7 $11) 38. Nd5+ ({White should try} 38. Bf3 $14) 38... Nxd5+ $11 {The position is equal.} 39. exd5 Rcc8 40. Rb1 Kd7 41. Ke4 Kc7 42. Bd1 Rh8 43. Rdb2 h4 44. g4 Ra8 45. Be2 Rhb8 46. Rc1 Be8 47. Bd3 Bd7 48. Rf2 Be8 49. Rb2 Bd7 50. Rf2 Be8 51. Rb2 Bd7 {Weighted Error Value: White=0.07/Black=0.07} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.12"]
[Round "6.4"]
[White "Nemcova, Katerina"]
[Black "Cervantes Landeiro, Thalia"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2331"]
[BlackElo "2175"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,108,0,0,0,0,-10,0,0,24,21,22,6,36,10,13,0,1,0,16,-39,-32,-42,0,0,0,0,-1,0,0,0,0,0,0,0,0,-9,-5,-8,0,0,8,0,0,0,46,-9,0,0,0,0,0,-14,0,0,0,-4,-2,-2,-2,-2,-2,-9,-2,-2,-9,-9,0,-9,0,0,0,-15,-15,-15,-15,-15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 O-O 10. Be3 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Bg4 11. h3 Bh5 12. Qc2 Bg6 {[#] Strongly threatening ...Nxc3. 12...Nxc3 might become the main line.} 13. Qb3 Ba5 14. O-O Bxc3 15. bxc3 (15. Bxc6 $5 Bxb2 16. Bxb7 Bxa1 17. Bxa8 Bxd4 18. Bxd5 Bxe3 19. fxe3 $11) 15... Na5 {[#]} 16. Qb4 $146 ({Predecessor:} 16. Qb2 c6 17. Be2 b5 18. Bf4 Nc4 19. Bxc4 bxc4 20. Qa3 Re8 21. Rab1 Qe7 22. Qa5 {1-0 (52) Antolak,J (2309)-Aliavdin,N (2324) Lazy 2021}) 16... c6 17. Be2 b5 {[#]} 18. a4 (18. Nh4 $1 $11) 18... Nc4 $15 19. axb5 cxb5 (19... a5 $5 {[%cal Ra5b4]} 20. Qb3 (20. bxa6 Rb8 $17) 20... a4 $15) 20. Bxc4 ({Wrong is} 20. Qxb5 $2 Nxc3 21. Bxc4 Nxb5 $19) 20... bxc4 21. Ra3 a5 22. Qa4 Qe7 23. Rfa1 Rfb8 24. Qc6 Qe6 25. Qxe6 fxe6 26. Ng5 Nxg5 27. Bxg5 Rb5 28. Be7 Bc2 29. R3a2 Bb3 {Threatens to win with ...Kf7.} 30. Rb2 Rab8 31. Rab1 (31. Bd6 $14 R8b7 32. f3) 31... Kf7 {The position is equal.} 32. Bd6 R8b7 33. Kf1 Ke8 34. Ke1 Kd7 35. Kd2 Kc6 36. Ke3 Bc2 37. Rxb5 Rxb5 38. Rxb5 Kxb5 $11 {[%mdl 4096] Endgame KB-KB} 39. Kd2 Bd3 40. h4 Ka4 {White must now prevent ...Kb3.} 41. Bc7 $1 Kb5 42. Ke3 a4 {Hoping for ...a3.} 43. Bd6 Kc6 44. h5 Kd7 45. Kf4 Ke8 46. Kg5 Kf7 47. h6 Bf1 48. g3 Be2 49. Ba3 Bd3 50. f4 g6 51. Kh4 Bf5 52. Kg5 Bd3 53. Kh4 Bf5 54. Kg5 Bd3 {Weighted Error Value: White=0.08/Black=0.05} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.12"]
[Round "6.5"]
[White "Sharevich, Anna"]
[Black "Yip, Carissa"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "2276"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,98,30,67,-30,66,63,129,42,42,39,28,32,41,18,29,11,13,7,0,0,1,-8,-19,-120,-14,-14,-10,-17,0,-6,2,2,22,13,18,20,21,14,14,0,10,0,25,29,37,0,-7,-8,-7,-21,-28,-48,-35,-137,-134,-130,-35,-105,-69,-52,-63,-184,-152,-355,-361,-748,-736,-816,-417,-5481,-348,-731,-692,-681,-447,-441,-366,-444,-350,-473,-465,-414,-356,-489,-481,-735,-674,-785,-768,-729,-740]} 1. d4 g6 2. Bf4 Bg7 3. Nf3 d6 4. Nc3 Nd7 5. e4 c5 {Threatening ...cxd4.} 6. Bc4 {[#] A41: 1 d4 d6: Tartakower System and Modern Defence.} (6. e5 $14) 6... Qa5 $146 (6... cxd4 $11 7. Nxd4 e5 {[%mdl 64] Double Attack}) ({Predecessor:} 6... Qb6 7. Nd5 Qd8 8. O-O cxd4 9. Ng5 Nh6 10. Qf3 O-O 11. Rad1 Ne5 12. Qb3 Nxc4 13. Qxc4 {0-1 (55) Knott,T (1484)-Khalimov,K (1783) Frankfurt 2010}) 7. Bd2 $14 h6 (7... Bxd4 $14 8. Nd5 Qd8) 8. Nd5 (8. e5 $16) 8... Qd8 $1 9. Bc3 cxd4 10. Bxd4 Ngf6 11. O-O e5 12. Nxf6+ Nxf6 13. Bc3 O-O 14. Qd3 Qc7 15. Bb4 Rd8 16. a4 (16. Rfe1 $11 {keeps the balance.}) 16... b6 (16... d5 $17 17. Bxd5 (17. exd5 $2 e4 $19 {[%mdl 64] Double Attack}) 17... Rxd5 $1 18. exd5 e4 {[%mdl 64] Double Attack}) 17. Nd2 $11 Bb7 18. Bd5 Nxd5 19. exd5 a5 20. Ba3 Ba6 21. c4 f5 22. f3 Bc8 23. Kh1 Bd7 24. Qc2 Be8 25. Rae1 Qd7 26. b3 g5 27. Bb2 Bg6 28. Bc3 Kh7 29. Qb2 Rg8 30. g3 Rae8 31. f4 ({Better is} 31. Qc1 $15) 31... gxf4 $17 32. gxf4 e4 (32... Bh5 $17 33. fxe5 dxe5) 33. Re3 (33. Bxg7 $15 Qxg7 34. Qxg7+ Kxg7 35. Rg1) 33... Bxc3 34. Qxc3 Bh5 35. Rg1 ({White should try} 35. Rh3 $15 Bg4 36. Rg3) 35... Qe7 36. Qc1 {White does not recover from this.} (36. Reg3 $17 {keeps fighting.}) 36... Qf6 $19 37. Rxg8 $2 (37. Qe1 Rxg1+ 38. Kxg1) 37... Rxg8 38. Qe1 Qd4 39. Rh3 {[#]} (39. Qf2 $142 Qa1+ 40. Nf1) 39... Bf7 $2 (39... Be2 $1 {[%mdl 512] ...e3 is the strong threat.} 40. Rg3 e3 $1 41. Qxe2 exd2 42. Rxg8 d1=Q+ 43. Qxd1 Qxd1+ 44. Rg1 Qxb3 {[%mdl 64] Double Attack}) 40. Rg3 {[#]} (40. Re3) 40... Rxg3 $1 41. hxg3 Bh5 {Strongly threatening ...e3.} 42. Nf1 Bf3+ 43. Kh2 Kg6 44. Ne3 Qb2+ 45. Kg1 h5 46. Qf2 Qxb3 {Black is clearly winning.} 47. Nf1 (47. Kh2 $142 Qxa4 48. g4) 47... Qxc4 48. Qxb6 Qxd5 49. Qe3 Bd1 {Weighted Error Value: White=0.75/Black=0.51} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.12"]
[Round "6.6"]
[White "Paikidze, Nazi"]
[Black "Abrahamyan, Tatev"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2374"]
[BlackElo "2344"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,75,8,0,0,8,70,0,0,0,0,-7,8,8,7,26,11,22,15,-29,29,20,34,3,31,0,7,8,6,0,0,0,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. O-O b5 5. d3 c5 6. Nbd2 Nc6 7. e4 Be7 8. Re1 Bb7 {C00: French: Unusual White 2nd moves.} 9. exd5 exd5 {[#]} (9... Nxd5 $11 10. a4 a6) 10. Ne5 $146 (10. Nb3 $14) ({Predecessor:} 10. d4 c4 11. Nf1 O-O 12. Bg5 h6 13. Bxf6 Bxf6 14. c3 Qd6 15. Ne3 Rab8 16. Qd2 {1-0 (30) Danielsen,H (2498)-Rusev,K (2525) Odense 2012}) 10... Nxe5 $11 11. Rxe5 O-O 12. Nf1 Qc7 13. Re1 d4 14. Bf4 Qd7 15. Bxb7 Qxb7 16. Be5 Rfe8 ({Better is} 16... Nd5) 17. Bxf6 Bxf6 18. Nd2 (18. a4 {seems wilder.} b4 19. Nd2 g6 20. b3 Qc6 21. Qg4) 18... Be7 19. Qf3 (19. a4 {looks sharper.} bxa4 20. Rxa4 Qxb2 21. Nb3 a5 22. Qd2) 19... Qxf3 {The position is equal.} 20. Nxf3 Bd6 21. a4 b4 22. Nd2 f5 23. Kg2 Kf7 24. Kf3 Rxe1 25. Rxe1 Re8 26. Rxe8 Kxe8 {[%mdl 4096] Endgame KB-KN} 27. Ke2 Kf7 28. Nc4 Bc7 29. Nd2 Ke6 30. f4 Bd6 31. Kf3 Bc7 32. g4 g6 33. g5 Bd6 34. b3 Bc7 35. Nf1 Bd6 36. Nd2 Bc7 37. Nf1 Bd6 38. Nd2 {Not much happened in this game.  Weighted Error Value: White=0.08/Black=0.08} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.13"]
[Round "7.1"]
[White "Cervantes Landeiro, Thalia"]
[Black "Sharevich, Anna"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2175"]
[BlackElo "2276"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,80,45,43,45,29,25,39,19,17,18,18,26,21,20,19,25,42,11,11,0,0,-11,-10,-68,-35,-93,-97,-127,-160,-506,-277,-316,-293,-687,-706,-693,-672,-1244,-1209,-1157,-993,-1502,-1254,-1243,-1208,-1595,-1516,-29973,-5385,-2290,-2233,-29995,-29996]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. cxd5 exd5 6. Bf4 c6 7. h3 Be7 8. e3 O-O 9. Bd3 Re8 10. O-O Nf8 11. Qc2 Ng6 12. Bh2 Bd6 13. Rab1 Bxh2+ 14. Kxh2 Qd6+ 15. Kg1 Bd7 16. b4 {D35: Queen's Gambit Declined: Exchange Variation.} Rac8 17. a4 {[#]} Qe7 $146 ({Predecessor:} 17... a6 18. Qb3 Ne4 19. Bxe4 dxe4 20. Ng5 Qe7 21. Ngxe4 Bf5 22. Nc5 b6 23. e4 Bxh3 24. Nxa6 Qg5 25. g3 Nf4 26. Rfe1 Qh5 27. Qd1 Bg4 28. f3 Qh3 29. Qd2 Qxg3+ {0-1 (27) Gago Padreny,I (2247)-Katzir,M (2159) Chess.com INT 2021}) 18. Rfe1 {White is slightly better.} Ne4 19. Bxe4 dxe4 20. Nd2 {[%cal Rc3e4]} f5 21. Ne2 Be6 22. Qc5 Qd7 23. a5 a6 24. Nc3 Qf7 25. Na4 Rcd8 {[%cal Bc8d8,Bd8d6,Bd6g6][%mdl 32]} 26. Qc3 ({White should play} 26. Nc3 $11) 26... Bd5 (26... f4 $5 {[%cal Rf4f3]} 27. Nc5 (27. Nxe4 Ba2 $15) 27... f3 $15) 27. Nc5 (27. g3 $15) 27... Rd6 $17 28. Rbc1 Nh4 $1 {[%cal Bg6h4,Bh4g2,Bg2e1,Be1f3][%mdl 32]} 29. Nf1 $2 (29. g3 $17 {was the crucial defense.} Nf3+ 30. Nxf3 exf3 31. Qd3) 29... Rg6 30. Ng3 h5 31. Qd2 $2 (31. Kf1) 31... f4 $19 32. exf4 {[#]} Nxg2 $1 {[%mdl 512] ...e3 is the strong threat.} 33. f5 (33. Re3 Nxe3) 33... Nxe1 34. fxg6 Nf3+ {[%mdl 64] Double Attack} 35. Kh1 Qxg6 (35... Nxd2 $2 36. gxf7+ Kxf7 37. Kg1 $19) 36. Qe3 h4 37. Ne2 Rf8 38. Ng1 {[#]} Qd6 (38... Nd2 $142 $1 {[%mdl 512]} 39. Ne2 {[#]} (39. Ne6 Qxe6) 39... Rxf2 $3 {[%mdl 512]} 40. Rg1 Rxe2 $1 {[%mdl 512]} 41. Rxg6 Rxe3 42. Kg1 Re2 43. Nxe4 Bxe4 44. Re6 Rg2+ 45. Kh1 Rg3+ 46. Rxe4 Nxe4 47. Kh2 Nd2 48. d5 Nf3+ 49. Kh1 Rg1#) 39. Nxf3 Rxf3 ({Not} 39... exf3 40. Rg1 $15) 40. Nxe4 Rxe3 {Weighted Error Value: White=1.45/Black=0.30} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.13"]
[Round "7.2"]
[White "Lee, Megan"]
[Black "Paikidze, Nazi"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2211"]
[BlackElo "2374"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,129,47,44,40,43,47,43,32,29,25,-22,-4,-7,0,0,4,3,23,-32,-30,-31,-14,-13,-19,-72,-27,-8,-37,-26,-14,-12,0,0,0,0,9,-68,-32,-37,-34,-47,-15,-12,0,0,0,0,0,0,25,24,45,38,33,18,16,12,55,49,102,44,103,109,141,134,123,114,262,260,292,287,277,264,314,277,328,302,296,294,352,340,403,402,393,339,631,631,618,613,1097,1097,1627,1560,1895,1673,1130,1481,5078,4812,29988,6012,942,0,10656,6714,2370,2135,29984,29985,29985,29986,29986,29987,29987,29988,29988,29989,29989,29990,29990,29989]} 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Be3 Nd7 {[%cal Bb8d7,Bd7f6,Bf6h5,Bh5g3][%mdl 32]} 5. Nc3 a6 6. a4 b6 {B06: Modern Defence.} 7. Bc4 e6 8. Qd2 Bb7 {White is slightly better.} 9. Bg5 Ndf6 10. Qe2 {Black must now prevent e5.} (10. d5 $5 {[%cal Rd5e6]}) 10... h6 {[#]} 11. Bh4 $146 ({Predecessor:} 11. Bd2 Ne7 12. h3 d5 13. Bd3 c5 14. exd5 exd5 15. Qd1 Ne4 16. O-O cxd4 17. Ne2 {0-1 (46) Novkovic,J (2174)-Ballmann,M (2393) Switzerland 2018}) 11... g5 12. Bg3 Nh5 13. O-O-O Ne7 14. Ne1 ({White should play} 14. d5 $11) 14... Nxg3 $15 15. hxg3 Qd7 16. d5 exd5 17. Nxd5 (17. exd5 $11 Bxc3 18. bxc3) 17... Bxd5 18. Bxd5 Nxd5 19. exd5+ Kf8 20. Qe4 Re8 21. Qc4 b5 22. axb5 axb5 23. Qb3 (23. Qc6 $11 Qxc6 24. dxc6) 23... Ra8 24. Nd3 Bf6 25. f3 Kg7 26. g4 c5 27. dxc6 $1 Qxc6 28. c3 Qb6 29. Kc2 Rac8 30. Nb4 Be5 31. Nd5 Qa7 32. Rd2 ({Not} 32. Qxb5 $2 Rb8 $17) 32... Rb8 33. Re1 Rhc8 (33... b4 $5 34. Nxb4 Rb5 $14) 34. Re4 Kh7 {White stays focused until the end.} ({Better is} 34... Rc6 $14) 35. Nb4 (35. g3 $16) 35... Rc5 (35... Kg7 $14) 36. Nd3 $16 Rc4 37. Rxc4 bxc4 38. Qxc4 Bf6 (38... Kg8 $16 {is a better defense.} 39. Rd1 (39. Nxe5 dxe5 40. b4 Qa4+ 41. Qb3 Qa6 $16) 39... Kg7) 39. Nb4 $18 {aiming for Nc6.} Qa4+ 40. Qb3 Qe8 41. Rxd6 Be5 42. Rd1 Bf4 43. Kb1 Kg8 44. Qc2 Ra8 45. Nd5 {Threatens to win with Nf6+.} Be5 46. Qe4 Rb8 47. Rd2 {Hoping for Re2.} ({Less strong is} 47. Re1 Qb5 $18) 47... Kg7 $2 (47... Qe6 48. b4 Bg7) 48. Re2 f6 {[#]} 49. Nxf6 $1 {[%mdl 576] Pin} Qd8 {And now ...Qd1+ would win.} (49... Kxf6 50. Qf5+) 50. Nh5+ Kg8 51. Qg6+ Kh8 52. Qxh6+ Kg8 53. Qe6+ {[%mdl 64] Double Attack} Kh7 54. Kc2 Qa5 55. Qf5+ (55. Qe7+ $142 Kg8 56. Rxe5 {[%mdl 64] Double Attack} Qa4+ 57. Kd2 Rxb2+ 58. Ke3 Re2+ {[%mdl 64] Decoy} 59. Kxe2 Qc2+ 60. Kf1) 55... Kh6 56. Rxe5 $2 (56. Qxe5 $18 {[%csl Gh5][%cal Re5g7]} Qa4+ 57. b3 Qxb3+ 58. Kd2 Qa2+ 59. Ke1 Rb1+ 60. Kf2 Qa7+ 61. Kg3) 56... Qa4+ $2 {[%mdl 8192] [#]} (56... Rxb2+ $11 57. Kd3 (57. Kxb2 Qxc3+ 58. Ka2 Qb2+ 59. Kxb2 $11) 57... Rd2+ {[%mdl 64] Decoy} 58. Kxd2 Qxc3+ 59. Ke2 Qd2+ 60. Kf1 Qe1+ 61. Kxe1) 57. Kc1 $1 {[%cal Re5e6]} Qa1+ 58. Qb1 {[%cal Re5e6]} Qa6 59. Ng3 {White mates.} Rd8 60. Nf5+ Kh7 61. Nd6+ Kh8 62. Nf7+ {[%mdl 64] Double Attack} Kg7 63. Nxd8 Qf1+ 64. Kc2 Qf2+ 65. Kd3 {Weighted Error Value: White=0.13/Black=0.43} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.13"]
[Round "7.3"]
[White "Yip, Carissa"]
[Black "Zatonskih, Anna"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2402"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,57,43,14,11,-39,0,0,0,0,12,-23,0,7,15,18,20,-13,0,-57,0,0,0,-14,12,0,0,-13,0,0,0,0,20,43,57,59,95,73,97,83,137,145,125,147,131,129,422,409,585,530]} 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Bd7 6. Bd3 cxd4 {C02: French: Advance Variation.} 7. O-O dxc3 8. Nxc3 {[#]} Ne7 $146 {The position is equal.} ({Predecessor:} 8... Na6 9. Be3 Bc5 10. Na4 Qa5 11. Nxc5 Nxc5 12. Bxc5 Qxc5 13. b4 Qb6 14. a4 Ne7 {0-1 (37) Radosavljevic,S (2226)-Jovanovic,B (2235) Pozarevac 2013}) 9. h4 h6 10. h5 Qd8 11. Be3 Nec6 12. Rc1 Be7 13. Bb1 Na5 14. Qd4 ({Better is} 14. b3 $11) 14... Nbc6 (14... Nc4 $1 $15) 15. Qg4 $11 Kf8 16. b3 Rc8 17. Ne2 {[%cal Bc3e2,Be2d4,Bd4b5][%mdl 32]} b6 18. Rcd1 Rc7 19. Qg3 Bc8 20. Nfd4 Nxd4 (20... Ba6 $5 {[%cal Rc6d4]}) 21. Nxd4 Nc6 22. Nb5 $1 {[%mdl 1024] White has compensation.} Rd7 {[#]} 23. f4 $1 d4 24. Bf2 Bc5 {[#]} (24... Bb7 $142) 25. f5 $1 $16 {[%cal Rf5e6] And now fxe6 would win.} exf5 26. Bxf5 Re7 27. Be4 Nxe5 {[%mdl 8192]} (27... Qd7 $16) 28. b4 $18 {[%mdl 64] Decoy} Bxb4 (28... Bg4 {was necessary.} 29. bxc5 Bxd1) 29. Rxd4 {[%mdl 64] Double Attack.  Weighted Error Value: White=0.12/Black=0.32} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.13"]
[Round "7.4"]
[White "Krush, Irina"]
[Black "Eswaran, Ashritha"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2429"]
[BlackElo "2244"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,75,33,15,52,17,41,25,19,22,22,13,16,47,59,15,36,24,34,16,22,6,7,0,11,8,22,19,68,71,79,71,70,68,72,55,49,50,27,32,72,62,79,74,151,179,171,131,480,457,589,590,5601,5601,5306,5306,2747,2537,29997,29998]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. Rd1 Re8 {Threatens to win with ...e5. 10...Rd8 is the modern continuation. D37: Queen's Gambit Declined: 5 Bf4.} 11. Nd2 e5 12. Bg5 {And now Nb3 would win.} Nd4 {[%cal Rd4c2] White has an edge.} 13. Qb1 (13. exd4 exd4+ 14. Be2 (14. Ne2 $2 Ng4 $19) 14... dxc3 $17) 13... Bf5 14. Bd3 Bxd3 15. Qxd3 {Strongly threatening Bxf6.} Ne4 16. Nxd5 ({Stronger than} 16. exd4 exd4 17. O-O (17. Ncxe4 $2 dxe4 18. Qb1 e3 $17 {[%mdl 64] Pin}) 17... dxc3 $17) (16. Ncxe4 {with more complications.} dxe4 17. Qxe4 Nb3 18. Qd3 Nxd2 19. Rxd2 Bf8 20. Qd5) 16... Nxg5 17. b4 Qd8 18. bxc5 {Hoping for h4.} Nde6 19. O-O Nxc5 {[#]} 20. Qc2 $146 ({Predecessor:} 20. Qb1 Qc8 21. f4 exf4 22. Rxf4 f6 23. h4 Nf7 24. Rxf6 gxf6 25. Nxf6+ Kf8 26. Qxh7 {1-0 (64) Tabatabaei,M (2629)-Esipenko,A (2682) Chess.com INT 2020}) 20... Nge6 21. Nf3 f6 22. h4 e4 {[#]} 23. Nc3 $1 Qa5 (23... Qe7 24. Nxe4) 24. Nxe4 Qxa3 25. Nd6 Red8 26. h5 Qa6 27. Nf5 Qa4 28. Qe2 Rxd1 29. Rxd1 Ne4 {White must now prevent ...Nc3.} 30. Rd5 Rd8 {[#]} (30... Kh8 $142) 31. N3d4 $1 $16 {[%cal Rd4e6]} Rxd5 32. cxd5 N6g5 {[%mdl 8192] Loses the game.} (32... N6c5 $16) 33. f4 $18 Nf7 34. Kh2 Qa1 35. Qb5 {[%cal Rb5e8]} ({Less strong is} 35. Qg4 Qh1+ 36. Kxh1 Nf2+ 37. Kh2 Nxg4+ 38. Kg3 Ngh6 $16) 35... Ned6 36. Nxd6 Nxd6 37. Qd7 {Intending Ne6 and mate.} Qa3 38. Ne6 {[%csl Ge6][%cal Rd7g7] Weighted Error Value: White=0.05/Black=0.57} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.13"]
[Round "7.5"]
[White "Abrahamyan, Tatev"]
[Black "Nemcova, Katerina"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "2344"]
[BlackElo "2331"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,124,27,20,18,46,37,42,30,60,25,24,16,31,0,0,0,0,0,7,0,8,4,20,16,14,0,18,16,13,14,6,8,14,8,31,15,12,7,25,3,39,35,45,33,55,31,37,34,52,50,47,45,62,48,43,45,52,61,88,59,104,40,41,48,67,38,42,16,30,20,21,20,18,24,22,0,5,5,5,5,5,0,0,0,0,-30,-24,-19,-29,-26,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 f5 9. exf5 Bxf5 10. Bd3 Be6 11. O-O Nf6 12. Nc2 {B32: Sicilian: Löwenthal and Kalashnikov Variations.} O-O 13. b3 (13. Nd5 $5) 13... Qe8 14. Bb2 {[#] White is slightly better.} Qf7 $146 ({Predecessor:} 14... Rc8 15. Ne3 Kh8 16. Bf5 Nd4 17. Bxe6 Nxe6 18. Ncd5 Nxd5 19. Qxd5 Nf4 20. Qxb7 Nd3 {1-0 (41) Arman,D (2313)-Eriksson,C (2149) Ballerup 2015}) 15. Ne4 Nh5 16. Ng3 Nf4 17. Be4 d5 18. cxd5 Bxd5 19. Bxd5 Nxd5 20. Ne3 Rad8 {[#] aiming for ...Nxe3.} 21. Nxd5 Rxd5 22. Qe2 Nd4 23. Qe4 Bg5 24. Rad1 {[%cal Rb2d4]} Rfd8 {next ...Nf3+! is good for Black.} 25. Bxd4 exd4 26. Qd3 Bf4 27. Ne4 Bd6 28. Rc1 Bf4 29. Rc2 Qf5 30. Re1 Be5 31. g3 g5 32. f3 Kh8 33. Rce2 Bg7 34. Kg2 h6 35. Nf2 Qxd3 36. Nxd3 Bf6 37. Rc2 Kg7 38. f4 Kf7 39. Kf3 a5 40. Ree2 b6 41. Re4 ({Better is} 41. Rc7+ $16 R5d7 42. Rec2) 41... gxf4 $14 42. Rxf4 Kg7 43. h4 R8d7 44. Ke2 R5d6 45. Kd2 Re7 46. Rf3 Kh7 47. Rc1 Bg7 48. Rc8 Rde6 49. Nf4 Re3 50. Rxe3 Rxe3 $11 {[%mdl 4096] Endgame KRB-KRN} 51. Nh5 {[#] Threatens to win with Rc7.} Be5 52. g4 Re4 53. Kd3 (53. Rc7+ {keeps more tension.} Kg8 54. Rc6 Rxg4 55. Nf6+ Bxf6 56. Rxf6 Rxh4 57. Rxb6 Rh2+ 58. Kd3) 53... Rxg4 54. Re8 Bh8 55. Re4 Rg2 56. Re7+ {The position is equal.} Kg8 57. Re8+ Kh7 58. Re7+ Kg8 59. Re8+ Kh7 60. Re7+ Kg8 61. Re8+ Kh7 62. Re7+ Kg8 {Weighted Error Value: White=0.09/Black=0.08} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.13"]
[Round "7.6"]
[White "Tokhirjonova, Gulrukhbegim"]
[Black "Foisor, Sabina-Francesca"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2322"]
[BlackElo "2205"]
[Annotator "TA"]
[PlyCount "149"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,149,0,30,22,21,12,16,5,9,0,25,20,37,3,31,-20,30,10,12,0,14,0,12,10,14,0,0,0,54,49,58,57,55,47,56,68,371,359,407,368,512,100,110,8,9,1,72,49,89,33,51,52,96,92,86,58,143,97,96,84,87,66,75,54,86,75,75,75,75,70,68,61,93,79,93,93,93,93,93,56,59,54,93,93,84,93,93,68,85,31,118,118,118,118,118,118,118,118,118,118,118,118,118,118,158,118,118,118,118,118,118,118,118,118,118,118,118,118,118,118,118,156,162,162,162,118,118,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. b3 Be7 5. Nc3 O-O 6. Bb2 c5 7. cxd5 exd5 8. d4 {A13: English Opening: 1...e6.} b6 9. Be2 Bb7 10. O-O Nbd7 11. Bd3 Rc8 12. Rc1 a6 {[#]} 13. Bf5 $146 ({Predecessor:} 13. Ne2 Re8 14. Ne5 g6 15. Nxd7 Nxd7 16. Re1 Bf6 17. Qd2 Bg5 18. Nf4 Nf6 19. f3 Qd6 {½-½ (27) Simek,J (2141)-Naeter,B (2211) ICCF email 2016}) 13... g6 14. Bb1 (14. Bh3 $14) 14... b5 15. dxc5 Nxc5 16. Nd4 Qd7 17. h3 b4 18. Nce2 a5 19. Nf3 Ba6 20. Re1 Nfe4 (20... Nce4 $11) 21. Nf4 ({Not} 21. Qd4 Bf6 $17) 21... Rfd8 22. Ne5 ({Don't go for} 22. Qd4 $2 Bf6 $19) 22... Qd6 23. Ng4 f6 24. Qd4 {Black must now prevent f3.} Bb7 $2 {[%mdl 8192]} (24... Kg7 $14) 25. f3 $1 $18 Nc3 26. Bxc3 bxc3 27. Rxc3 $2 (27. Nh6+ $1 $18 Kf8 28. Bxg6) 27... Ne6 28. Nxe6 (28. Nxf6+ $16 Bxf6 29. Qxf6 Nxf4 30. Qxd6 Nxh3+ 31. gxh3 Rxd6 32. Rxc8+ Bxc8 33. h4) 28... Qxe6 $11 29. Rec1 h5 (29... Rxc3 $11 {keeps the balance.} 30. Rxc3 Qd6) 30. Nf2 f5 31. Rc7 (31. Rxc8 $1 $16 Rxc8 32. Rxc8+ Bxc8 33. Nd3) 31... Rxc7 32. Rxc7 Rd7 33. Rxd7 Qxd7 34. Qb6 (34. Nd3 {keeps more tension.} Qc7 35. f4 Kh7 36. Kh2 h4 37. Ne5) 34... Kh7 (34... Qc6 $14 35. Qxc6 Bxc6) 35. Nd3 Qc6 36. Qxc6 Bxc6 $16 {[%mdl 4096] Endgame KBB-KBN} 37. Ne5 Be8 38. f4 Kg7 39. Kf2 Kf6 40. Nf3 Ke6 41. Ke2 Kd6 42. Kd2 Bf6 43. Nd4 Kc5 {[#]} 44. Kc3 $1 Bd7 45. a3 Bh4 46. Nf3 Bf6+ 47. Ne5 Be8 48. b4+ axb4+ 49. axb4+ Kd6 50. Kd4 Bd8 51. g3 (51. Kd3 $16) 51... Bb6+ ({Black should try} 51... h4 $1 $14 52. gxh4 Bxh4) 52. Kd3 Ke6 53. Ba2 Kd6 54. Nf3 Bb5+ 55. Kd2 Bd8 56. Bb1 Bf6 57. Bd3 Be8 58. Nd4 Bf7 59. h4 Bxd4 60. exd4 {KB-KB} Be8 61. Kc3 Kc6 62. Kb3 Kb6 63. Ka3 Bd7 64. Bc2 {Threatens to win with Ba4.} Be8 65. Ba4 Bf7 66. Bd7 {Strongly threatening b5.} Kc7 {[#]} 67. Bb5 $1 Kb7 68. Kb3 Kc7 69. Ba6 {Hoping for Ka4.} Kb6 70. b5 (70. Be2 $16) 70... Be6 $11 {The position is equal.} 71. Kb4 Bd7 72. Ka4 Be6 73. Kb4 Bd7 74. Ka4 Be6 75. Kb4 {Weighted Error Value: White=0.22/Black=0.32} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.14"]
[Round "8.1"]
[White "Eswaran, Ashritha"]
[Black "Tokhirjonova, Gulrukhbegim"]
[Result "0-1"]
[ECO "D94"]
[WhiteElo "2244"]
[BlackElo "2322"]
[Annotator "TA"]
[PlyCount "296"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,296,23,35,45,49,43,51,39,36,35,37,31,37,34,42,31,36,26,45,43,47,55,55,39,43,29,38,23,48,39,39,15,54,26,59,43,37,22,39,30,23,0,0,-54,-52,-124,-106,-195,-186,-181,-182,-168,-176,-262,-268,-479,-462,-456,-402,-472,-540,-554,-537,-485,-480,-490,-529,-435,-379,-508,-127,-116,-116,-116,-115,-116,-68,-73,-72,-58,-58,-75,-69,-83,-74,-92,-92,-92,-92,-92,-92,-93,-92,-100,-72,-136,-136,-136,-133,-133,-111,-111,-111,-111,-75,-111,-111,-111,-111,-111,-111,-111,-111,-111,-111,-140,-75,-180,-180,-180,-180,-180,-156,-210,-210,-210,-210,-210,-210,-291,-210,-210,-210,-210,-204,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-143,-210,-210,-210,-126,-126,-126,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,0,-210,0,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-210,-95,-95,-88,-88,-88,-107,-90,-155,-155,-155,-155,-155,-155,-185,0,-132,-132,-210,-210,-210,-41,-516,-689,-533,-531,-532,-531,-516,-512,-502,-502,-494,-487,-487,-487,-487,-448,-425,-249,-346,-281,-858,-858,-858,-254,-734,-693,-1141,-1043,-3395,-2721,-29973,-29974,-29973,-29973,-29974,-29973,-29973,-29974,-29974,-29975,-29976,-29977,-29977,-29978,-29978,-29979,-29979,-29976,-29983,-29972,-29967,-29970,-1199,-281,-29974,-29975,-29973,-29977,-29977,-29978,-29979,-29980,-29981,-29982,-29982,-29983,-29983,-29984,-29984,-29985,-29987,-29988,-29988,-29989]} 1. Nf3 Nf6 2. d4 g6 3. e3 Bg7 4. c4 c6 5. Be2 d5 6. O-O O-O 7. Nc3 Ne4 {Recently 7...a6 got a lot of attention.} 8. Qc2 {D94: Grünfeld: 4 Nf3 Bg7 5 e3.} Nxc3 9. bxc3 {[#]} e6 $146 ({Predecessor:} 9... b6 10. cxd5 cxd5 11. c4 Bb7 12. Ba3 dxc4 13. Qxc4 Nc6 14. Rac1 Qd7 15. Rfd1 Rfd8 {0-1 (64) Zenin,D (2310)-Ivanov,O (2519) Moscow 2016}) 10. Ba3 {White is slightly better.} Re8 11. Rab1 Nd7 12. cxd5 exd5 13. c4 dxc4 14. Bxc4 Nb6 15. Bd3 Be6 16. Bc5 Qc7 17. Ng5 Bc8 18. Ne4 Nd5 19. Rfc1 Rd8 20. a4 Bf5 21. Ba3 Rab8 22. Rb2 a5 23. h3 h5 24. Nc5 Bxd3 25. Qxd3 {Strongly threatening Rcb1.} Bf8 26. Qb1 Qc8 {Hoping for ...b6.} 27. Qa2 b5 {White must now prevent ...b4.} 28. axb5 (28. Rbb1 $11) 28... cxb5 $15 29. Nd3 (29. Rbb1 $15) 29... Nc3 $1 $17 {[%cal Rc3a2]} 30. Qa1 (30. Rxc3 $17 Qxc3 {[%mdl 64] Double Attack} 31. Ne5 Qc1+ 32. Kh2) 30... b4 $19 31. Rbc2 {[%cal Rc2c3]} Qf5 32. Ne5 bxa3 33. Rxc3 (33. Qxc3 $142 Rdc8 34. Nc6 (34. Qxc8 $2 {too greedy.} Rxc8 35. Rxc8 a2 $17)) 33... Rb2 34. Rf1 (34. Nd3 Rdb8 35. Rd1) 34... Rdb8 $1 35. Nd3 Rd2 36. Ne5 Rbb2 {[%cal Rd2f2]} 37. Nf3 Rdc2 38. Rxa3 Bxa3 39. Qxa3 Qb5 40. Qe7 a4 41. d5 {intending d6.} Qxd5 (41... Rb1 $19 42. Rxb1 Qxb1+ 43. Kh2 Qb8+ 44. Ne5 Rxf2) 42. Qe8+ $17 Kg7 43. Qxa4 Ra2 44. Qf4 Qc4 45. Qe5+ f6 $1 {[%cal Rf6e5]} 46. Qe7+ Qf7 47. Qd6 Qc7 48. Qd5 {With the idea Nd4.} Ra5 49. Qd1 {next Nd4 is good for White.} Rca2 50. Nd4 {Threatens to win with Ne6+.} Qc4 51. Qf3 Qd5 52. Qd1 Kh6 53. Qb1 Qa8 (53... Ra7 {keeps more tension.} 54. Qc1 Kh7 55. Qc3 R2a3 56. Qc1 Qb7) 54. Qb6 (54. Qb4 $142) 54... Rg5 {[%csl Gg5][%cal Ra8g2]} 55. Qc6 Qxc6 56. Nxc6 {[%mdl 4096] Endgame KRR-KRN} Rb5 57. Nd4 Rbb2 58. h4 Kg7 59. g3 Kf7 60. Kg2 Ke7 61. Nf3 Ke6 62. Ng1 Kf5 63. Nf3 Ke4 64. Nd4 Rd2 (64... Ke5 $142 65. Nc6+ Kd6) 65. Nf3 (65. Ne6 $17 {keeps fighting.}) 65... Re2 $1 $19 66. Ng1 Rxe3 $1 67. Rb1 Ke5 68. Rb5+ (68. Nh3 $17) 68... Kd6 $1 69. Rb6+ Ke7 $1 70. Rb7+ Kf8 71. Rc7 Re7 72. Rc6 Kf7 73. Nh3 Re5 74. Nf4 Ra7 75. Rb6 Rf5 76. Rc6 Rb7 77. Ra6 Rd7 78. Ra2 Kg7 79. Rb2 Ra7 80. Rc2 Kh6 81. Rc6 Ra2 82. Rb6 Ra4 83. Nh3 (83. Rd6 $17) 83... Re4 84. Ra6 Kg7 85. Ra7+ Kg8 86. Ra8+ (86. Nf4 $17 {was called for.}) 86... Kf7 $1 87. Ra7+ Re7 88. Ra6 Kg8 89. Nf4 Kh7 90. Rb6 Ra7 91. Rc6 Kg7 $2 ({Black should play} 91... Rd7 $19 92. Rb6 Kg7 93. Ne6+ Kf7) 92. Rb6 $2 (92. Rc2 $1 $11 Rfa5 93. Rc8) 92... Kf7 $2 (92... Rfa5 $19 {aiming for ...Kf7.} 93. Rb8 R5a6) 93. Rb2 $2 (93. Rc6 $1 $11 {and White has nothing to worry.} Rb5 94. Rd6) 93... Rfa5 94. Rb6 Rd7 95. Rb2 Ra4 96. Rb5 Ra2 97. Rc5 Rdd2 98. Nh3 Rdc2 99. Rb5 Re2 100. Rb7+ Re7 101. Rb5 Re5 (101... Ra6 $19 {is more deadly.} 102. Nf4 Ra2) 102. Rb7+ $17 Ke6 103. Nf4+ Kf5 104. Rf7 Rc5 105. Rf8 (105. Rg7 $142) 105... Rcc2 106. Nh3 Ke6 $1 107. Rb8 Rcb2 108. Rc8 Rc2 (108... Ra6 $19 109. Nf4+ Kf7 110. Rc7+ Kg8) 109. Rb8 $1 Rc7 110. Rb5 (110. Rh8 $17) 110... Rac2 $19 111. Rb8 Kf5 $2 ({Black should try} 111... R2c6 $19 {...Rc2 is the strong threat.} 112. Nf4+ Kf7) 112. Rg8 $2 {[%mdl 8192] This costs White the game.} (112. Nf4 $15) 112... Rc8 $1 {[%cal Rc8g8]} 113. Rg7 {[#]} R2c7 $1 {[%cal Rc7g7]} 114. Rxc7 Rxc7 {KR-KN} 115. Nf4 Rc2 116. Nd5 {And now Ne3+ would win.} Ke6 117. Nf4+ {[#]} Kf7 $1 118. Kf3 Kg7 119. Kg2 Kh6 120. Nd5 Rc6 121. Ne3 g5 122. hxg5+ $2 (122. f4) 122... fxg5 123. Kf3 Rf6+ $2 (123... Rc3 124. Kg2 Kg6) 124. Ke2 $2 (124. Kg2) 124... Kg6 125. Ng2 Kf5 126. Ne3+ Ke4 127. Ng2 Ra6 128. Kf1 Ra1+ 129. Ke2 Rb1 130. f3+ Kd4 131. Kf2 Rb2+ 132. Kf1 Kd3 133. f4 g4 134. Nh4 Ke3 135. Kg1 Ra2 136. f5 Ke4 137. Kf1 Ke5 138. Kg1 Rb2 139. Kf1 $2 (139. Kh1 $19) 139... Rh2 {Black mates.} 140. Kg1 {[#]} Rxh4 $1 {[%mdl 576] Remove Defender} 141. gxh4 Kxf5 {KPP-KP} 142. Kf2 Kf4 143. Kg2 Ke4 144. Kf2 Kd3 145. Kg2 Ke2 146. Kg3 Kf1 147. Kf4 Kf2 148. Kg5 g3 {Weighted Error Value: White=0.23/Black=0.15} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.14"]
[Round "8.2"]
[White "Cervantes Landeiro, Thalia"]
[Black "Abrahamyan, Tatev"]
[Result "1/2-1/2"]
[ECO "E18"]
[WhiteElo "2175"]
[BlackElo "2344"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,85,16,18,40,25,20,-5,0,0,20,25,35,45,33,35,41,30,29,4,18,-6,14,0,26,17,27,22,24,21,27,0,0,3,0,8,27,13,20,0,7,0,26,27,19,33,39,19,13,8,10,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Re1 Na6 8. Nc3 Ne4 {E18: Queen's Indian: Old Main Line (4 g3 Bb7 5 Bg2 Be7 6 0-0 0-0 7 Nc3).} 9. Nxe4 Bxe4 10. a3 c5 11. d5 $1 exd5 12. cxd5 {And now Qa4 would win.} d6 13. Qa4 {[#]} Bxf3 $146 ({Predecessor:} 13... Nc7 14. Qxe4 f5 15. Qc2 g5 16. e4 g4 17. Nd2 Nb5 18. exf5 Nd4 19. Qd1 h5 20. Nb3 Nxf5 21. Qe2 Bf6 22. Qe6+ {1-0 (22) Dragomirescu,C (2229)-Andre,M Miercurea Ciuc 2003}) 14. Bxf3 Nb8 15. Bf4 Bf6 16. Qc2 Qe7 17. Bg2 Nd7 18. e4 Rab8 19. Bd2 b5 20. f4 Rfe8 21. Rad1 Qd8 22. Bc3 Bxc3 23. Qxc3 b4 24. axb4 Rxb4 25. e5 Qb6 26. exd6 Rd8 27. Re7 Qxd6 28. Rde1 Nf6 29. Qe5 h6 ({Not} 29... Qxe5 $2 30. fxe5 Nd7 31. d6 $18) 30. Qxd6 Rxd6 {The position is equal.} 31. Rxa7 {Strongly threatening Ree7.} Rxb2 32. Rc7 Rd2 33. Rxc5 (33. Ree7 {looks sharper.} c4 34. Rxc4 Rb6 35. Rc1 Rbb2 36. Bh3) 33... Nxd5 34. Bxd5 (34. Rc8+ {feels hotter.} Kh7 35. f5 Nf6 36. Rc7 Rd1 37. Rce7) 34... R6xd5 35. Rxd5 Rxd5 $11 {[%mdl 4096] Endgame KR-KR} 36. Re2 g6 37. Kg2 Kg7 38. Ra2 h5 39. Kf3 Rb5 40. Rc2 Rd5 41. Ra2 Rb5 42. Rc2 Rd5 43. Ra2 {Weighted Error Value: White=0.07/Black=0.06} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.14"]
[Round "8.3"]
[White "Nemcova, Katerina"]
[Black "Lee, Megan"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2331"]
[BlackElo "2211"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,103,0,2,-46,0,0,0,-13,0,0,0,-17,0,-26,-30,-22,-33,-25,0,0,0,0,17,12,38,22,60,49,64,60,55,66,191,32,59,50,63,61,149,115,121,113,246,178,422,123,283,267,306,306,306,306,306,257,295,284,283,263,763,765,781,716,763,638,772,716,625,620,1193,1294,1258,1234,1143,1242,1197,1047,1200,1091,29940,29945,29939,29946,29945,29947,29954,29955,29967,29968,29975,29976]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. Nb3 {C56: Two Knights: 4 d4 exd4 5 0-0 Nxe4.} (9. O-O {looks sharper.} Bc5 10. f3 Ng5 11. Be3 Bb6 12. f4) 9... Be7 10. O-O O-O 11. Be3 {The position is equal.} f6 12. f3 Ng5 13. f4 Ne4 {[#]} 14. Nc3 $146 (14. N1d2 {with more complications.} fxe5 15. fxe5 Rxf1+ 16. Qxf1 Nxd2 17. Nxd2 Qe8 18. Qd3) ({Predecessor:} 14. N1d2 fxe5 15. fxe5 Rxf1+ 16. Kxf1 Qf8+ 17. Kg1 Qf5 18. Nf3 Qf7 19. Qd3 c5 20. c4 {½-½ (46) Orlov,V (2461)-Sivokho,S (2464) St Petersburg 2007}) 14... Nxc3 15. bxc3 fxe5 16. fxe5 Rxf1+ 17. Qxf1 Qe8 18. Bc5 Bg5 19. Re1 {Black must now prevent e6!} Be6 20. Qf3 Qg6 21. Nd4 Bg4 22. Qf2 $40 {[%mdl 128] Threatens to win with h4. White has some attack.} (22. Qxg4 $2 Be3+ $1 {[%mdl 512]} 23. Rxe3 Qxg4 $19) 22... Re8 23. e6 h6 {[#]} (23... h5 $14) 24. e7 $2 ({Worse is} 24. Nxc6 Rxe6 25. Ne5 Qe8 $15) (24. h3 $1 $18 {[%cal Rh3g4]} Bxe6 25. h4 (25. Rxe6 Rxe6 26. Nxe6 Qxe6 $11)) 24... Kh7 25. Kh1 Bf6 26. Qg3 Bxd4 {White now steadily converts the win.} ({Better is} 26... a5 $14) 27. cxd4 $16 Bf5 28. Qxg6+ Bxg6 {[%mdl 4096] Endgame KRB-KRB} (28... Kxg6 $16 29. Rf1 (29. Bxa7 Bxc2 30. Bc5 Kf7 $16) 29... h5) 29. c3 ({Resist} 29. Bxa7 $6 Kg8) 29... Be4 $2 {[#]} (29... Kg8 {keeps fighting.} 30. Rf1 (30. Bxa7 Kf7 $16) 30... Bf7) 30. Kg1 $2 (30. Rf1 $1 $18 {and the rest is easy.}) 30... g5 $2 (30... Kg6 $16 {was necessary.} 31. Rf1 Bf5) 31. Rf1 $18 {aiming for Rf7+.} Kg7 32. Rf8 Bg6 33. Kf2 a6 34. g4 Bf7 35. Kg3 Kf6 36. h4 Ke6 $2 (36... gxh4+ 37. Kxh4 Kg6) 37. h5 Kf6 38. Kf3 Ke6 39. Ke3 Kf6 40. Kd2 Ke6 41. Kc2 Rxe7 42. Bxe7 Kxe7 {KR-KB} 43. Rh8 Be6 44. Rxh6 Bxg4 45. Kd2 a5 46. a4 Kf7 47. Rxc6 {White mates.} Bxh5 48. Rxc7+ Ke6 49. Rc5 Be8 50. Rxa5 Kd6 51. Ke3 Bh5 52. Rc5 {Weighted Error Value: White=0.34/Black=0.52} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.14"]
[Round "8.4"]
[White "Foisor, Sabina-Francesca"]
[Black "Yip, Carissa"]
[Result "0-1"]
[ECO "E60"]
[WhiteElo "2205"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,90,24,0,-2,-12,0,-27,4,-35,0,-42,-34,-73,-83,-118,-103,-106,-70,-75,-60,-65,-60,-116,-83,-108,-93,-115,-103,-106,-71,-64,-59,-64,-64,-81,-62,-73,-50,-113,-124,-114,-88,-91,-35,-122,-114,-111,-117,-144,-142,-179,-169,-220,-175,-220,-239,-327,-332,-424,-416,-462,-459,-441,-441,-466,-461,-497,-483,-794,-792,-2667,-2697,-1820,-1116,-2077,-1738,-29985,-29986,-29986,-29986,-29986,-29973]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 c5 5. Bg2 Qa5+ 6. Nbd2 cxd4 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3.} 7. Nxd4 Nc6 8. N4b3 Qc7 {Black has an edge.} 9. O-O O-O 10. Nf3 d6 11. Bf4 Nh5 12. Qd2 Nxf4 13. gxf4 {[#]} Bd7 $146 ({Predecessor:} 13... Qb6 14. e3 Be6 15. Rfc1 Rac8 16. Bf1 Rfd8 17. Nfd4 Bg4 18. h3 Nxd4 19. Nxd4 Bd7 {1-0 (81) Swiercz,D (2456)-Markos,J (2568) Polanica Zdroj 2008}) 14. Rac1 Rad8 15. Nbd4 Qc8 16. Kh1 (16. e3 $15) 16... a6 17. Nxc6 Bxc6 ({Don't do} 17... Qxc6 18. e3 $15) 18. Ne1 Bh6 19. e3 Bxg2+ 20. Nxg2 Qh3 21. Rc3 Bg7 22. Rd3 Rc8 23. b3 Rc5 24. Rd5 (24. e4 $15 Qh6 25. Rd5) 24... Rfc8 $17 25. e4 Qe6 (25... Rxd5 {keeps more tension.} 26. exd5 b5 27. Qe3 Qxe3 28. Nxe3 Bh6) 26. Re1 Bh6 (26... b5 $17 27. Rxc5 Rxc5) 27. Qd3 {[#] White is on the road to losing.} (27. Qc3 $1 $15) 27... b5 $1 28. f5 {[#]} Qf6 {[%cal Rb5c4]} 29. fxg6 hxg6 30. Qh3 Bg7 31. cxb5 axb5 32. Rxc5 Rxc5 33. Qe3 Qb2 34. a4 b4 35. Re2 Rc1+ 36. Ne1 Qb1 {White must now prevent ...Bc3.} 37. Kg2 Rc3 38. Qb6 Qxb3 39. a5 (39. Qd8+ $142 Bf8 40. Qb8) 39... Qc4 $19 40. Kf1 Rc1 41. Qe3 b3 {[%cal Bb4b3,Bb3b2][%mdl 32] ...b2 is the strong threat.} 42. a6 b2 {( -> ...Rxe1+!)} 43. a7 {[#]} Rxe1+ $1 {[%mdl 576] Pin. Black mates.} 44. Kg2 Ra1 45. Re1 Qa6 {Weighted Error Value: White=0.72/Black=0.19} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.14"]
[Round "8.5"]
[White "Paikidze, Nazi"]
[Black "Krush, Irina"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteElo "2374"]
[BlackElo "2429"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,66,-1,-7,0,0,0,0,24,0,0,0,0,0,0,0,-16,0,-9,0,4,0,0,0,0,0,0,0,42,0,33,0,0,-14,-9,-10,0,0,39,0,0,-20,0,-7,0,0,29]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. Qe2 d6 7. Nc3 Qc7 8. O-O Be7 9. Kh1 Nbd7 10. f4 b5 11. a3 Bb7 12. Bd2 Nc5 {B43: Sicilian: Kan Variation: 5 Nc3.} 13. b4 Nxd3 14. cxd3 O-O {[#]} 15. a4 $146 ({Predecessor:} 15. Nb3 Rac8 16. Rac1 Qd7 17. Be3 Rfe8 18. Rc2 e5 19. fxe5 dxe5 20. Bc5 Bd8 21. h3 {0-1 (60) Movsesian,S (2653)-Laznicka,V (2666) Prague 2016}) 15... bxa4 16. Rfc1 Rfc8 17. Nd5 Qd8 18. Nxe7+ Qxe7 19. Rxa4 Rxc1+ 20. Bxc1 Qc7 21. Bb2 Qb6 22. Qd2 Rc8 23. Ra5 h6 24. h3 Bc6 25. Qe1 Bb5 26. Qg3 Ne8 27. Ra1 Bd7 28. Qe1 $1 Nf6 29. Ra5 Bb5 30. Qg3 (30. Nxb5 $14 axb5 31. Bxf6 gxf6 32. Kh2) 30... Ne8 $11 {The position is equal.} 31. Ra1 Bd7 32. Qe1 Nf6 33. Ra5 Bb5 {An uneventful encounter.  Weighted Error Value: White=0.09/Black=0.06} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.14"]
[Round "8.6"]
[White "Sharevich, Anna"]
[Black "Zatonskih, Anna"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2276"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "134"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,134,11,11,11,11,4,12,0,0,-5,-5,0,0,-4,11,10,16,0,8,3,16,0,8,8,8,8,12,9,12,0,11,-18,-7,0,-16,-29,-2,-20,-20,-14,-12,-14,-22,-27,0,-33,-32,-60,0,-34,-23,-19,-7,-73,-76,-85,-89,-138,-72,-93,-58,-58,-42,-42,-44,-54,-42,-122,-120,-252,-52,-52,-26,-40,-8,-53,-56,-49,-67,-42,-45,-39,-42,-50,-42,-52,0,0,0,0,0,-21,-28,-28,-29,-106,-93,-96,-101,-159,-174,-223,-211,-213,-185,-195,-180,-192,-188,-209,-203,-406,-389,-390,-397,-407,-367,-367,-339,-339,-339,-556,-558,-606,-596,-534,-472]} 1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. Nf3 cxd4 5. exd4 Bg4 6. Nbd2 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} e6 7. h3 Bh5 8. Bb5 {The position is equal.} Bd6 9. Bxd6 Qxd6 10. c3 Nge7 11. O-O {[#]} a6 $146 ({Predecessor:} 11... O-O 12. Re1 f6 13. Qe2 Bf7 14. Nb3 a6 15. Bd3 Rfe8 16. Nc5 Rab8 17. b4 Ng6 18. Bxg6 Bxg6 {½-½ (29) Ryzhkov,I (2368)-Grigoryev,V (2499) ICCF email 2017}) 12. Bd3 Bg6 13. Qe2 O-O 14. Rfe1 Qc7 15. Rac1 Rac8 16. Bxg6 Nxg6 17. g3 Nge7 18. Kg2 Nf5 19. Qd3 Na5 20. b3 Rfd8 21. Ne5 Nc6 22. Nef3 Qe7 23. Nf1 (23. a4 {looks sharper.} Qa3 24. Ra1 Qd6 25. h4 Rc7 26. h5) 23... Rc7 24. Ne3 Nxe3+ 25. Qxe3 Qd6 26. h4 Rdc8 27. h5 h6 28. g4 Re8 ({Black should play} 28... b5 $15) 29. Nh4 Qd8 30. Qg3 Ne7 {[%cal Bc6e7,Be7c8,Bc8d6,Bd6c4][%mdl 32]} 31. Kh1 (31. Re5 $11) 31... Nc8 $1 $17 32. f3 Nd6 33. a4 b5 (33... Rc6 $142 34. Ng2 b5) 34. a5 Rc6 35. b4 Qg5 36. Rc2 Rec8 37. Ng2 Nc4 38. f4 (38. Nf4 $15) 38... Qd8 $1 39. g5 (39. Rec1 $17 {is a better defense.}) 39... hxg5 $2 (39... Nd6 $1 $19 {Threatens to win with ...Nf5.} 40. gxh6 Nf5 {[%mdl 64] Double Attack}) 40. fxg5 $15 Nd6 {And now ...Ne4 would win.} 41. g6 Qf6 {White must now prevent ...Nf5.} 42. Rf2 Nf5 43. gxf7+ Qxf7 44. Qg6 Qxg6 45. hxg6 Ng3+ 46. Kh2 Ne4 $36 {[%mdl 2112] Double Attack. Black is pushing.} ({But not} 46... Rxc3 $6 47. Rxe6 Ne4 48. Re2 $14) 47. Rf3 Rxc3 (47... Nxc3 $15 48. Re5 Na2) 48. Rxc3 $11 Rxc3 $15 {[%mdl 4096] Endgame KRN-KRN} 49. Nf4 Rc6 50. Kg2 Kf8 51. Rf1 $1 Ke8 52. Nd3 (52. Nh5 $11 Rc7 53. Rf3) 52... Rc2+ $17 {Black converts the advantage convincingly.} 53. Kg1 Rc3 $1 {[%cal Rc3d3]} 54. Ne5 {[#]} ({Better is} 54. Rf3) 54... Nd6 $1 55. Kg2 Ke7 56. Rh1 Rc8 57. Nd3 Rc2+ 58. Kf3 Nf5 {Strongly threatening ...Rc3.} 59. Rh8 Nxd4+ 60. Kf4 $2 (60. Ke3 {was the only chance.} Nf5+ 61. Kf3) 60... Nc6 $19 61. Ra8 {[#] and the idea Ne5 leaves White hopeful.} Kf6 $1 62. Rxa6 {[#]} Nxb4 $1 {[%mdl 576] Decoy} 63. Nxb4 {KRN-KR} Rc4+ {[%mdl 64] Double Attack} 64. Kf3 {Nc6 is the strong threat.} Rxb4 65. Rb6 $2 (65. Rd6) 65... Kf5 {Black is clearly winning.} 66. a6 Ra4 67. Rb7 Kxg6 {Weighted Error Value: White=0.23/Black=0.11} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.16"]
[Round "9.1"]
[White "Abrahamyan, Tatev"]
[Black "Sharevich, Anna"]
[Result "1-0"]
[ECO "B54"]
[WhiteElo "2344"]
[BlackElo "2276"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,75,37,46,69,54,87,54,59,59,68,71,121,114,123,103,133,135,140,127,167,173,183,175,163,152,256,253,248,250,333,318,316,306,400,414,411,410,397,389,420,413,437,381,488,481,460,442,444,429,517,509,711,656,645,632,666,609,689,642,756,750,12840,693,12841,12841,12841,6195]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. g4 Bd7 {B54: Sicilian: 2...d6 3 d4 cxd4 4 Nxd4, Unusual Lines .} 7. Be3 Be7 {[#]} 8. Qe2 $146 ({Predecessor:} 8. Qd2 Ne5 9. Rg1 a6 10. O-O-O h6 11. f4 Nc6 12. Nf3 b5 13. e5 Qa5 14. exd6 {1-0 (36) Van Delft,M (2417)-De Koster,D Durban 2014}) 8... Nxd4 {White is slightly better.} 9. Bxd4 e5 10. Be3 Bc6 11. O-O-O Nf6 12. Bg2 Qa5 13. g5 Nd7 14. h4 b5 {[#]} 15. Kb1 $1 Nb6 16. f4 Nc4 {Black wants to play ...Nxb2.} 17. Bc1 Qb4 (17... Rc8 $16) 18. Nd5 $18 Bxd5 19. Rxd5 ({Resist} 19. exd5 $6 O-O) 19... Rc8 20. c3 Qa5 21. b3 Qxc3 22. bxc4 bxc4 {Threatening ...Rb8+.} 23. Qb2 Qxb2+ 24. Kxb2 exf4 25. Bxf4 Rc6 26. Rhd1 c3+ 27. Kc2 {White is clearly winning.} Ra6 28. Ra1 O-O 29. Bf1 Rb6 30. Rb5 f6 31. Bc4+ Kh8 32. Rxb6 axb6 33. Kxc3 g6 34. Rd1 fxg5 35. Bxg5 Bf6+ 36. Bxf6+ Rxf6 37. Rf1 Kg7 38. Kd4 {Black did not feel at home in the position after the opening.  Weighted Error Value: White=0.08/Black=0.40} (38. Rxf6 $142 Kxf6 39. Kd4) 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.16"]
[Round "9.2"]
[White "Tokhirjonova, Gulrukhbegim"]
[Black "Paikidze, Nazi"]
[Result "1-0"]
[ECO "E69"]
[WhiteElo "2322"]
[BlackElo "2374"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,131,68,62,54,43,63,44,61,41,126,97,163,161,154,58,64,25,118,0,58,55,54,55,123,124,124,123,127,124,141,134,133,120,124,121,170,136,184,91,241,217,213,200,192,194,185,177,225,139,128,112,128,100,117,106,145,145,145,145,145,145,145,145,145,145,145,145,176,145,145,145,145,145,145,145,145,145,145,145,145,145,236,243,225,216,225,212,379,378,369,364,408,406,401,399,387,355,356,352,342,328,506,491,508,495,29983,29984]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 d6 5. g3 O-O 6. Bg2 Nbd7 7. O-O e5 8. e4 exd4 9. Nxd4 Re8 10. Re1 c6 11. h3 Qc7 12. Be3 Nc5 13. Qc2 a5 14. Rad1 a4 {E69: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4 c6 9 h3.} 15. f4 {[#]} h5 $146 ({Predecessor:} 15... Nfd7 16. Ndb5 cxb5 17. Nxb5 Qb8 18. Nxd6 Re6 19. e5 Bf8 20. Nb5 Ra5 {½-½ (20) Cavalcanti,F (2255)-Duarte Filho,F (2024) Joao Pessoa 2014}) 16. Bf2 Nh7 {White is slightly better.} 17. Nf3 b6 (17... a3 $14) 18. Bd4 $16 Be6 (18... Nf6 $16 {keeps fighting.}) 19. Bxg7 $18 Kxg7 20. e5 (20. Rd4 $16) 20... Bf5 21. Qf2 (21. exd6 $6 Bxc2 22. dxc7 Bxd1 $11) 21... dxe5 (21... Nd3 $11 22. Rxd3 (22. exd6 Nxf2 23. dxc7 Nxd1 $11) 22... Bxd3) 22. Rxe5 (22. Nxe5 $16 Rad8 23. Rxd8 (23. Nxc6 Rxe1+ 24. Rxe1 Nd3 $16) 23... Rxd8 24. Nxc6) 22... Be6 ({Don't blunder} 22... Nd3 $2 23. Rxd3 $1 {[%mdl 512]} Bxd3 24. Rxe8 $18) (22... Nf6 $11) 23. Ree1 $14 Rad8 24. Ne5 Bc8 (24... Rxd1 $14 25. Rxd1 Rd8) 25. Rxd8 Rxd8 26. Nxc6 Nd3 27. Qd2 Nxe1 28. Qxd8 Qxd8 29. Nxd8 Nxg2 30. Kxg2 $16 {[%mdl 4096] Endgame KBN-KNN} Kf8 31. Kh2 Bd7 {White must now prevent ...Ke7.} 32. Nb7 (32. Nd5 $18) 32... Be6 (32... Nf6 $16 {was worth a try.}) 33. Nxa4 Bxc4 34. b3 ({Resist} 34. Nxb6 $6 Bxa2 35. Kg2 Ke7 $14) 34... Ba6 35. Nd6 Ke7 36. Ne4 b5 37. Nac3 Bb7 {Threatens to win with ...b4.} 38. Nc5 Bc6 39. Kg1 Nf6 40. b4 Ne8 41. Nb3 Nc7 42. Nd4 Bd7 43. h4 Kd6 44. Kf2 Be8 45. a3 Bd7 46. Ke2 Ke7 47. Kd3 Kd6 48. Ke4 f5+ 49. Kd3 Be8 50. Nf3 Ne6 51. Ne5 Nc7 52. Ke3 Ne6 53. Nd3 Bc6 (53... Nc7 $16 {might work better.} 54. Ne2 Nd5+ 55. Kd4 Bc6) 54. Nb2 $1 $18 Nc7 {[#]} 55. Kd4 $1 Ne6+ {[#]} 56. Kd3 $1 Nc7 $2 (56... Be8 57. a4 bxa4 58. Nbxa4 Nf8) 57. a4 bxa4 58. Nbxa4 Bg2 59. Nc5 Bf3 60. Kd4 Bc6 61. Kc4 Na8 62. b5 Nb6+ 63. Kd4 Be8 (63... Bg2 $142 64. Nd3 Na8) 64. Nd3 Nd7 65. Ne5 Nc5 (65... Nf6 $18 66. b6 Bc6 67. Nxg6 Nd7) 66. Nc4+ {Weighted Error Value: White=0.13/Black=0.42} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.16"]
[Round "9.3"]
[White "Yip, Carissa"]
[Black "Eswaran, Ashritha"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "2402"]
[BlackElo "2244"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,79,28,25,43,33,47,39,43,21,25,6,26,0,23,-28,7,0,35,24,31,8,38,30,23,35,55,1,38,37,104,117,245,238,281,272,275,270,255,252,333,331,340,335,346,329,317,329,483,103,442,379,858,589,5485,5485,1916,1698,5822,5838,5714,1713,29979,29980,29978,29979,29984,12839]} 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Bd3 O-O 8. Qc2 Re8+ {B15: Caro-Kann: 3 Nc3: 3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6.} 9. Ne2 h5 10. Be3 Nd7 {White is slightly better.} 11. h3 Nf8 12. O-O-O Be6 13. g4 h4 {[#]} (13... Bxa2 $2 14. b3 $18) 14. Rhg1 $146 (14. c4 $142) ({Predecessor:} 14. Kb1 b5 15. Rhg1 a5 16. g5 a4 17. gxf6 Qxf6 18. Bg5 Qf3 19. Bxh4 Bc4 20. Ng3 Bxd3 21. Qxd3 Qxd3+ 22. Rxd3 {½-½ (61) Smirnov,A (2567)-Xiong,J (2679) Chess.com INT 2019}) 14... Qa5 (14... Bxa2 $2 15. b3 $18) 15. a3 Rac8 16. Kb1 Bh2 17. Rge1 (17. Rh1 $5 {[%cal Rh1h2]} Bb8 18. Rhe1 $11) 17... Bb8 18. c4 b5 19. c5 Ng6 20. g5 ({White should play} 20. Bd2 $14 Qa4 21. Qxa4 (21. Bxg6 fxg6 22. Qxg6 Bf7 $19) 21... bxa4 22. Bc2) 20... Qa4 21. Qd2 {Threatens to win with Nc3.} f5 {Black is on the road to losing.} (21... Bxh3 $6 22. gxf6 b4 23. axb4 $16) (21... b4 $14) 22. d5 $16 Bxd5 {[#]} (22... cxd5 $16 23. Bc2 Qa6) 23. Nc3 $1 $18 {[%cal Rc3a4]} Qa6 ({But not} 23... Qb3 24. Bc2 $18 (24. Bxf5 Bf3 $11)) 24. Nxd5 ({Weaker is} 24. Bxf5 Bb3 $11) 24... cxd5 25. Bxf5 Rcd8 26. Bd4 Be5 27. Bxe5 Rxe5 28. Rxe5 Nxe5 29. Qf4 $1 {[%csl LRe5,LRh4]} Ng6 30. Qc7 Re8 (30... Rf8 {keeps fighting.} 31. Qd7 (31. Rxd5 b4 $16) 31... b4) 31. Qd6 $2 {[#]} (31. c6 $18 {and White stays clearly on top.} b4 32. Bxg6 fxg6 33. Qd7 {[%mdl 64] Double Attack}) 31... Qa4 $2 {[%mdl 8192]} (31... Qxd6 $16 32. cxd6 Nf4) 32. Bc2 Qa5 (32... Qf4 33. Qxd5 Qe5 34. Bxg6 Qxd5 35. Rxd5 fxg6) 33. Qxd5 Re1 34. Rxe1 Qxe1+ 35. Ka2 Nf8 36. Bb3 Qe7 37. c6 Ne6 38. g6 {White mates.} Kf8 39. Qf5 Nc7 40. Qc8+ {Weighted Error Value: White=0.46/Black=0.63} (40. gxf7 $142 Qd8 41. Qd7 Qxd7 42. cxd7 Ke7 43. f8=Q+ Kxd7 44. Qxg7+ Kc8 45. Qh8+ Kd7 46. Qd4+ Kc8 47. Qh8+ Kd7 48. Qxh4) 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.16"]
[Round "9.4"]
[White "Krush, Irina"]
[Black "Nemcova, Katerina"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2429"]
[BlackElo "2331"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,135,25,49,28,57,40,74,38,93,22,71,32,44,33,29,27,40,22,45,46,35,30,36,24,38,34,37,46,18,14,84,81,90,78,95,100,140,143,166,164,159,161,185,110,102,112,102,97,104,98,204,204,266,268,236,183,175,183,218,204,341,341,494,494,494,484,468,450,451,439,461,448,377,63,887,887,886,886,877,852,842,840,787,631,622,615,670,614,846,821,840,814,1102,1102,1075,1075,1825,970,1013,737,1087,1053,1056,1052,1051,1052,1053,1050,1050,948,1050,1045,1036,1036,1025,1025,977,951,865,850,5755,5755,5747,5747]} 1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 5. Bb2 O-O 6. Nf3 d6 7. d4 Ne4 8. Nbd2 {[%cal Bb1d2,Bd2e4,Be4c3,Bc3d5][%mdl 32] A87: Dutch Defence: Leningrad System: 5 Nf3.} c5 9. Qc2 {[#]} cxd4 $146 ({Predecessor:} 9... Qa5 10. dxc5 Qxc5 11. O-O Nxd2 12. Qxd2 Bxb2 13. Qxb2 Nd7 14. Rac1 a5 15. Rfd1 Nf6 {1-0 (46) Chilek,R-Cempel,J (2270) Czech Republic 1998}) 10. Nxd4 {White is better.} Qb6 (10... Nf6 $14) 11. e3 ({White should play} 11. Nxe4 $16 {Threatens to win with c5.} Bxd4 12. Nc3) 11... e5 12. Nb5 a6 13. Nxe4 axb5 14. Nc3 {Nd5 is the strong threat.} bxc4 15. Nd5 Qd8 16. Qxc4 {And now Nc7+ would win.} Be6 17. O-O Nc6 18. Rfd1 Rf7 19. b4 e4 20. Bxg7 Kxg7 21. a4 Ne5 (21... Qf6 $11) 22. Qd4 $16 Bxd5 23. Qxd5 Rd7 24. Bf1 Qg5 25. Be2 h5 26. h4 Qe7 27. Kg2 Rc8 28. Rd2 (28. a5 $18) 28... Qf7 29. Qd4 Qf6 30. Rad1 d5 31. a5 Rcd8 {[#]} (31... Nc6 $16 32. Qxf6+ Kxf6) 32. b5 $1 $18 {[%cal Bb4b5,Bb5a6][%mdl 32]} Nf7 33. Qc5 Qd6 34. Qxd6 Rxd6 35. a6 bxa6 36. bxa6 Ne5 (36... Kf6 $142 37. Rb2 Ke7 38. Rb7+ R6d7) 37. a7 Nc6 {[#]} (37... Nd3 {might work better.} 38. Bxd3 exd3) 38. Rxd5 $3 {[%mdl 512]} Rxd5 39. Rxd5 {[%mdl 4096] Endgame KRB-KRN} Ra8 40. Rc5 ({Not} 40. Rd7+ Kf8 $18) 40... Nxa7 41. Ra5 Kh6 42. Ra6 Kg7 43. Bc4 $2 ({White should try} 43. f4 $18) 43... Rc8 $2 {[%mdl 8192] Black cannot hold the game after this.} 44. Rxa7+ {KRB-KR. White is clearly winning.} Kf6 45. Ra6+ Kg7 46. Bb5 Rb8 47. Ba4 Kf7 48. Rd6 Kg7 49. Kf1 Kf7 50. Ke2 Rb4 51. Bc2 Rb2 52. Kd2 Kg7 53. Kc3 Ra2 54. Rb6 Ra1 55. Rb1 Ra2 56. Rb2 Ra3+ 57. Bb3 Ra1 58. Ra2 Rb1 59. Bc4 Rd1 60. Ra6 Rd8 61. Bb5 Kf7 62. Ra7+ Ke6 63. Rg7 Kf6 64. Rd7 Ra8 65. Kd4 Ke6 66. Kc5 Ra5 67. Rd6+ Kf7 68. Ra6 {Weighted Error Value: White=0.28/Black=0.29} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.16"]
[Round "9.5"]
[White "Zatonskih, Anna"]
[Black "Foisor, Sabina-Francesca"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2422"]
[BlackElo "2205"]
[Annotator "TA"]
[PlyCount "151"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,151,12,12,12,14,12,16,18,16,16,18,12,13,12,28,16,23,5,6,0,25,7,13,0,18,6,22,26,21,3,10,0,0,-10,0,0,11,19,47,51,68,27,106,105,118,110,139,129,170,34,181,177,207,207,207,199,293,276,300,302,414,438,650,646,606,619,862,477,471,468,459,473,464,476,462,454,510,431,511,484,618,617,616,577,687,670,805,782,896,848,866,838,1262,1204,1215,1322,12838,12839,12839,12840,12840,12841,12841,12841,12842,12841,12842,12842,12843,12844,12844,12845,12845,12845,12846,12845,12845,12843,12846,12844,12845,12843,12844,12844,12845,12845,12845,12845,12845,12846,12846,12847,12849,12847,12848,12848,12849,12848,12849,12848,12849,12849,12849,12850]} 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 a6 5. c5 b6 6. cxb6 $1 {D37: Queen's Gambit Declined: 5 Bf4.} cxb6 7. Bf4 Bb7 8. e3 {The position is equal.} Nc6 9. Bd3 Bd6 10. O-O Bxf4 11. exf4 Qd6 12. g3 O-O 13. Re1 Rac8 14. Rc1 {[#]} Na5 $146 ({Predecessor:} 14... b5 15. Re2 Rfe8 16. Bb1 Na5 17. Ne5 Nc4 18. Bd3 Nb6 19. Rec2 b4 20. Ne2 Rxc2 21. Rxc2 {1-0 (44) Bifulco,M (2297)-Parrella,A (2111) Alessandria 2018}) 15. Qe2 b5 16. Red1 Nc4 17. Ne5 Rc7 18. b3 Na3 19. Nb1 Rfc8 20. Qb2 {Threatens to win with Rxc7.} Nxb1 21. Bxb1 b4 22. Rxc7 Qxc7 23. f5 Ne4 24. fxe6 fxe6 25. Qe2 Rf8 (25... Nc3 $11 {keeps the balance.} 26. Qg4 Qe7) 26. f3 $16 Nc3 {[#]} 27. Qc2 {[%csl Gb1][%cal Rc2h7]} g6 28. Re1 a5 29. Kg2 (29. Nxg6 $1 $18 Rf6 30. Ne5) 29... Qg7 {A mistake that costs the game.} ({Better is} 29... Rc8 $1 $14) 30. Qd2 $18 Ba6 {[#]} 31. a4 $1 g5 32. Bc2 h5 (32... Kh8 $142 33. Nc6 g4) 33. Ng6 Rf6 34. Qxg5 {Black must now prevent Rxe6!} Be2 35. f4 Bg4 (35... h4 $142 36. gxh4 Rf7 37. Qd8+ Kh7) 36. h3 Be2 37. Kf2 Ba6 38. Qxh5 Ne4+ 39. Bxe4 dxe4 40. Ne5 Bb7 41. Qe8+ Kh7 42. Qd7 Bd5 43. Qxg7+ Kxg7 {[%mdl 4096] Endgame KRB-KRN} 44. Nc4 Rh6 45. h4 Rh8 46. Nxa5 Rc8 47. Nc4 Bxc4 48. bxc4 Rxc4 49. Rxe4 {KR-KR} Kf6 50. Re5 Rxd4 51. Rb5 b3 52. Rxb3 Rxa4 53. Kf3 Ra1 54. Rb5 Ra3+ 55. Kg4 Ra8 56. h5 Ra3 57. Re5 Ra6 58. Rg5 Kf7 59. h6 Ra8 60. h7 Rh8 61. Rh5 Kg6 62. Kh4 Kf6 63. g4 Kg6 64. Kg3 Kg7 65. Kg2 Kg6 66. Kf3 Kg7 67. Ke4 Kf6 68. Rh1 Kg6 69. Ke5 Kf7 70. g5 Kg7 71. Kxe6 {Intending f5 and mate.} Re8+ 72. Kd7 Rh8 73. f5 {White wants to mate with Ke7.} Kf7 74. Rh2 Kf8 75. Ke6 {Ra2 would kill now.} Kg7 76. Ke7 {Weighted Error Value: White=0.16/Black=0.36} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.16"]
[Round "9.6"]
[White "Lee, Megan"]
[Black "Cervantes Landeiro, Thalia"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2211"]
[BlackElo "2175"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,120,6,16,22,22,6,19,17,30,17,34,26,40,0,0,0,4,-55,0,0,7,-1,17,22,21,10,4,-16,-10,-24,-35,-15,95,100,140,149,157,136,124,106,92,15,27,1,0,-10,-10,-10,-10,-10,-10,-10,-8,-27,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. a4 Ngf6 5. Nc3 a6 6. Be2 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} b6 7. d4 cxd4 8. Qxd4 Bb7 9. O-O e5 10. Qe3 Be7 {[#]} 11. h3 $146 ({Predecessor:} 11. Nd2 O-O 12. Rd1 Qc7 13. b3 Nc5 14. Bb2 h6 15. b4 Ne6 16. Nc4 Nd7 17. a5 {½-½ (68) Tari,A (2625)-Wojtaszek,R (2705) Wijk aan Zee 2021}) 11... Qc7 12. Rd1 O-O 13. b3 (13. Nd2 $11) 13... Qc5 ({Black should try} 13... d5 $1 $15 14. exd5 (14. Nxd5 Bxd5 15. exd5 Bc5 $17) 14... Bc5) 14. Qd3 $11 Rfc8 15. Bb2 Qb4 16. Nd2 Nc5 {[%mdl 64] Double Attack} 17. Qe3 {Black must now prevent Na2.} Ncxe4 18. Ncxe4 Nxe4 19. Nc4 {Ba3 is the strong threat.} Bg5 20. Qf3 Qc5 (20... b5 $11 21. Ba3 Qc3 22. axb5 axb5 23. Nxd6 Qxf3 24. Bxf3 Nxd6 25. Bxd6 Rxa1 26. Rxa1 Bxf3 27. gxf3 f6) 21. Bd3 $16 b5 {[#]} 22. Na5 $1 {[%cal Ra5b7]} Nxf2 23. Nxb7 Qb6 {[#]} 24. a5 $1 {[%mdl 512]} Qa7 {[#]} 25. Kf1 ({Inferior is} 25. Qxf2 Be3 $17) (25. Bd4 $1 $16 {[%cal Rd4a7]} exd4 26. Kxf2) 25... Nxd3 $11 ({But not} 25... Nxd1 $2 26. Rxd1 Rf8 27. Nxd6 $18) 26. cxd3 Rc2 $36 {[%mdl 2048] And now ...Be3 would win. White is under pressure.} 27. Bc1 {[#]} e4 $1 28. dxe4 Bxc1 29. Raxc1 Rxc1 30. Rxc1 Qxb7 {[%mdl 4096] Endgame KQR-KQR} 31. Qc3 Qe7 32. Qc6 {The position is equal.} Re8 33. Re1 h6 34. Qxa6 Qf6+ 35. Kg1 Qd4+ 36. Kh1 Qb4 37. Rf1 Qxb3 38. Qxd6 Qc4 39. Rb1 Ra8 40. e5 Qa4 41. e6 fxe6 42. Qxe6+ Kh8 43. Qd5 Qxa5 44. Rxb5 Qe1+ 45. Kh2 Re8 46. Qf5 Qd2 47. Rd5 Qb4 48. Rd1 Qb8+ 49. Kh1 Rf8 50. Qg4 Qb5 (50... Qe5 {looks sharper.} 51. Kg1 Kh7 52. Qd4 Qg3 53. Qd3+ Qxd3 54. Rxd3 Ra8) 51. Kh2 (51. Qg3 {seems wilder.} Qc5 52. Kh2 Qf5 53. Re1 Qf4 54. Qxf4 Rxf4 55. Re8+) 51... Qe5+ 52. Qg3 Qxg3+ 53. Kxg3 {KR-KR} Kh7 54. Rd6 Ra8 55. Rb6 Ra3+ 56. Kf4 Rc3 57. Ra6 Rc4+ 58. Kf3 Rc3+ 59. Kf4 Rc4+ 60. Kf3 Rc3+ {Weighted Error Value: White=0.07/Black=0.08} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.17"]
[Round "10.1"]
[White "Eswaran, Ashritha"]
[Black "Zatonskih, Anna"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2244"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,61,0,9,23,20,24,22,34,38,38,22,23,26,26,0,0,0,0,0,0,0,98,100,170,66,85,73,182,189,187,189,187,187,725,727,696,696,694,685,29995,29996,29996,185]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Qb6 9. Qd2 Qxb2 10. Rb1 Qa3 11. Bb5 Nxd4 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4.} 12. Bxd4 ({But not} 12. Qxd4 a6 $17) 12... a6 13. Bxd7+ Bxd7 {The position is equal.} 14. Rb3 Qe7 15. Rxb7 Qh4+ 16. Bf2 {16.g3 is the modern continuation.} Qd8 17. O-O Qc8 18. Rb3 {[#]} Be7 $146 ({Predecessor:} 18... Qc4 19. Ne2 Be7 20. Rfb1 O-O 21. Rb7 Qc8 22. Qc3 Bd8 23. Qxc8 Bxc8 24. Rb8 Rxb8 25. Rxb8 {½-½ (124) Karjakin,S (2776)-Nakamura,H (2774) Monte Carlo 2011}) 19. f5 Qc4 20. Re1 Bc6 (20... Rc8 $11 {keeps the balance.}) 21. Ne2 $16 Bd7 (21... d4 $16 {keeps fighting.}) 22. Nd4 (22. f6 $1 $18 {[%cal Rf6e7]} gxf6 23. exf6 Bxf6 24. Bd4 Bxd4+ 25. Nxd4) 22... Rc8 $14 23. a3 exf5 {[#]} (23... Bc5 $16 {was necessary.}) 24. e6 $1 $18 {[%cal Re6d7]} fxe6 25. Nxe6 Bxe6 26. Rxe6 {Black must now prevent Qg5!} Kf7 $2 {[#]} (26... Rf8) 27. Rxe7+ $1 {[%mdl 576] Remove Defender} Kxe7 28. Qg5+ {[%mdl 64] Double Attack} Ke6 {and the idea ...d4 leaves Black hopeful.} 29. Re3+ Kd6 30. Qe7+ Kc6 31. Re6+ {Weighted Error Value: White=0.09/Black=0.53} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.17"]
[Round "10.2"]
[White "Abrahamyan, Tatev"]
[Black "Lee, Megan"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2344"]
[BlackElo "2211"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,89,0,0,4,4,2,14,2,0,19,-7,19,-16,7,14,13,2,23,0,14,17,0,14,11,-36,-16,-31,-21,-17,0,-20,0,-40,-2,-41,0,0,0,0,20,23,38,33,36,32,52,0,0,0,268,250,238,237,352,351,300,343,335,318,556,539,743,747,697,697,879,285,445,307,1049,949,5047,5047,29982,29983,29972,29974,29992,29993,29993,29994]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Nc6 6. e4 dxe4 {A07: Réti Opening: New York and Capablanca Systems.} 7. dxe4 Qxd1 8. Rxd1 Bg4 {The position is equal.} 9. c3 {[#]} a5 $146 ({Predecessor:} 9... Nf6 10. h3 Bxf3 11. Bxf3 h5 12. Nd2 O-O-O 13. Re1 Bh6 14. Nc4 Bxc1 15. Raxc1 Rhe8 {1-0 (30) Svidler,P (2723)-Giri,A (2764) chess24.com INT 2020}) 10. a4 Be6 11. Nbd2 Bh6 12. Bf1 O-O-O 13. Re1 f6 14. Nc4 Rd7 15. Rb1 Kb8 16. Be3 Bxe3 17. fxe3 (17. Nxe3 {seems wilder.} Nge7 18. h4 b6 19. Bb5 Kb7 20. Red1) 17... Nge7 18. b4 Bxc4 19. Bxc4 Rd6 20. Rf1 Rhd8 21. h4 h5 22. Kf2 Ng8 23. Ke2 Nh6 24. Rb2 Ka7 25. Rfb1 axb4 26. cxb4 Ne7 27. a5 Rc6 {[#]} 28. Bb5 (28. Rd2 $1 $14 Rdd6 29. Rc2) 28... Rc3 $11 {Strongly threatening ...Ng4.} 29. Rd2 Rxd2+ {[%mdl 8192] Black is on the road to losing.} (29... Rd6 $11 {and Black is okay.}) 30. Kxd2 $18 Ra3 {[#]} 31. Ne1 $1 c5 (31... Ra2+ $142 32. Nc2 f5) 32. Nc2 cxb4 33. Nxa3 bxa3 {[%mdl 4096] Endgame KRB-KNN} 34. Kc3 f5 $2 (34... a2 35. Ra1 Nf7) 35. Rd1 fxe4 36. Rd7 Nhf5 37. a6 Nxe3 38. Rxb7+ Ka8 39. Kb3 N3f5 (39... N7f5 40. Be8 (40. Kxa3 Nd6 $11) 40... Nd4+ 41. Ka2 (41. Kxa3 Nec2+ 42. Ka4 e3 $18) 41... Nd5) 40. Kxa3 e3 41. Rd7 Nd4 42. Rxe7 {White mates.} Nxb5+ 43. Kb4 Nd4 44. Kc5 Nf5 45. Rd7 {Weighted Error Value: White=0.21/Black=0.55} 1-0

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.17"]
[Round "10.3"]
[White "Cervantes Landeiro, Thalia"]
[Black "Krush, Irina"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2175"]
[BlackElo "2429"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,75,22,20,9,7,7,11,11,16,8,14,16,21,0,6,12,6,6,6,7,6,4,6,2,13,9,10,0,0,0,0,0,0,0,0,0,0,0,0,0,6,0,0,0,13,0,12,0,39,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Nge2 c5 7. Be3 Qa5 8. Nc1 cxd4 9. Nb3 Qb6 10. Bxd4 Qd8 11. Be2 Nc6 12. Be3 Be6 13. O-O Nd7 14. Qd2 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 15. f4 {[#] Black must now prevent f5. B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0.} a4 16. Nd4 Nxd4 17. Bxd4 {The position is equal.} Bxd4+ 18. Qxd4 {Hoping for f5.} Qb6 19. Qxb6 Nxb6 {[#]} 20. Nd5 $146 (20. b3 {is more complex.} f6 21. Kf2 Rfc8 22. g3 Kf7 23. Rfd1) ({Predecessor:} 20. b3 Ra5 21. Bf3 axb3 22. axb3 Rfa8 23. Rab1 Kf8 24. Ne2 Bd7 25. Nd4 e5 26. Ne2 {½-½ (40) Dijk,E (2215)-Gross,M (2208) ICCF email 2018}) 20... Nxd5 21. cxd5 Bd7 22. Rac1 Rfc8 23. a3 b6 24. Kf2 Rc5 25. Rc3 Kg7 26. Rfc1 Rb8 27. Ke3 f5 28. exf5 gxf5 29. Kd4 Kf6 30. Bf3 Be8 31. Rc4 Bf7 32. R1c3 Ra8 33. Rb4 Ra6 34. Rcc4 Be8 35. Rc3 Bf7 36. Rcc4 Be8 37. Rc3 Bf7 38. Rcc4 {A rather calm draw.  Weighted Error Value: White=0.04/Black=0.01} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.17"]
[Round "10.4"]
[White "Paikidze, Nazi"]
[Black "Yip, Carissa"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2374"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,70,25,48,54,55,49,42,34,39,36,57,49,33,52,47,42,61,51,17,29,87,7,94,54,59,58,62,48,37,33,35,34,38,45,71,-290,-272,-382,-413,-442,-431,-452,-412,-427,-306,-477,-477,-555,-571,-566,-558,-544,-553,-674,-667,-968,-969,-1048,-575,-1256,-1252,-1414,-1377]} 1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Nf3 a6 5. a4 Nd7 6. Bc4 {[#] And now Bxf7+! would win. B06: Modern Defence.} e6 7. Bg5 Ne7 8. Qd2 {White is slightly better.} h6 9. Be3 b6 10. h3 Bb7 11. O-O Nf6 12. d5 e5 13. Nh2 Nh5 14. Rfe1 g5 {[#]} (14... Qd7 $11 {remains equal.}) 15. g3 $146 ({Better is} 15. a5 $16) ({Predecessor:} 15. Nf1 Nf4 16. Ng3 Bc8 17. Be2 h5 18. Bxf4 exf4 19. Nxh5 Be5 20. Bg4 Ng8 21. Qe2 {1-0 (36) Rozentalis,E (2611)-Bach,M (2252) Odense 2013}) 15... Ng6 (15... Nf4 $11 {keeps the balance.}) 16. Qd1 Nf6 17. Bf1 Bc8 18. a5 b5 19. Bg2 Bd7 20. Nf1 Qc8 21. Kh2 $1 h5 22. f4 $2 {[%mdl 8192] This costs White the game.} (22. Bxg5 $16 h4 23. g4) 22... gxf4 $19 23. gxf4 (23. Bc1 {might work better.}) 23... exf4 24. e5 {[#]} Ng4+ {[%mdl 512]} 25. hxg4 hxg4+ ({Less strong is} 25... fxe3 26. e6 $19) 26. Kg1 dxe5 (26... fxe3 27. e6 $11) 27. Bc5 (27. Ne4 $142) 27... Qd8 {Black is clearly winning.} 28. Ne4 f5 29. d6 c6 ({Weaker is} 29... fxe4 30. Bxe4 Nf8 31. dxc7 $15) 30. Bb6 Qh4 31. Bf2 Qh5 32. Qd3 fxe4 33. Bxe4 Nf8 {White must now prevent ...f3.} 34. Bd4 f3 {( -> ...Qh1+)} 35. Bxf3 gxf3 {Weighted Error Value: White=0.69/Black=0.25} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.17"]
[Round "10.5"]
[White "Nemcova, Katerina"]
[Black "Tokhirjonova, Gulrukhbegim"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "2331"]
[BlackElo "2322"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,114,0,0,-39,-37,-26,-35,-17,-36,-65,-64,-71,-66,-57,-54,-46,-43,-51,-58,-54,-58,-112,-108,-139,-90,-87,-87,-90,-92,-93,-84,-89,-88,-88,-86,-97,-86,-76,-71,-81,-82,-85,-74,-135,-126,-194,-187,-189,-141,-143,-136,-147,-134,-179,-184,-210,-187,-222,-228,-225,-271,-275,-275,-263,-241,-212,-231,-304,-305,-328,-326,-329,-325,-356,-315,-312,-305,-285,-283,-283,-277,-373,-248,-302,-289,-319,-318,-312,-302,-244,-189,-287,-283,-285,-285,-280,-279,-560,-527,-533,-525,-498,-489]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Nd7 7. O-O Be7 8. c3 {C56: Two Knights: 4 d4 exd4 5 0-0 Nxe4.} dxc3 9. Qxd5 {[#]} cxb2 $146 ({Predecessor:} 9... Nb4 10. Qb3 cxb2 11. Bxb2 c6 12. Bc4 Nd5 13. e6 fxe6 14. Bxg7 Rg8 15. Bb2 Bf6 {0-1 (26) Ribera Veganzones,J (2087)-Diaz Mino,P (2306) Salobrena 2021}) 10. Bxb2 {Black is slightly better.} O-O {Hoping for ...Ndxe5.} 11. Nc3 Nc5 12. Rfd1 Be6 13. Qxd8 Rfxd8 14. Bxc6 bxc6 15. Nd4 Bd7 16. Ba3 Bf8 17. Rd2 (17. Nb3 $15 Nxb3 18. axb3) 17... Be8 $17 18. Rad1 Rd7 19. f4 {[#]} Na4 $1 20. Nxa4 {Strongly threatening Bxf8.} Bxa3 21. Nb3 Rad8 22. Rxd7 Rxd7 23. Rxd7 Bxd7 {[%mdl 4096] Endgame KBB-KNN} 24. Kf2 Bf5 25. Ke3 Kf8 26. Nd4 Bd7 27. Nb3 Ke8 28. h3 (28. Kd4 $142) 28... h5 29. Kf3 (29. Kd4 $17) 29... h4 $19 30. Nac5 Bc8 31. Ke4 g6 32. Kd4 Bf5 33. Ne4 Be6 34. Ke3 Be7 35. Kf3 Bd5 36. Ke3 c5 {[%cal Bc6c5,Bc5c4][%mdl 32]} 37. g4 hxg3 $1 38. Nxg3 Be6 39. Ne4 {[#]} c4 {[%cal Rc4b3]} ({But not} 39... Bxh3 40. Nbxc5 Kd8 41. Kf3 $17) 40. Nbd2 Bb4 {And now ...c3 would win.} ({Not} 40... Bxh3 41. Nxc4 Kd7 42. Na5 $17) 41. Nb1 Bxh3 42. Kd4 Be6 43. a3 Bf8 44. Nc5 Bh6 45. Ke3 Bf5 46. Nc3 c6 47. Ne2 Kd8 48. Nc3 Kc7 49. N3a4 Bc2 50. Nc3 Bf8 51. Kd4 Bf5 52. N3a4 (52. Kxc4 {was called for.} Bh6 53. Ne2) 52... Bc8 53. Nc3 Bh6 54. Ke3 Kb6 55. N3a4+ (55. N5a4+ {was necessary.} Ka5 56. Nc5) 55... Kb5 {Black is clearly winning.} 56. Kd4 Bxf4 57. Nc3+ Kb6 {Weighted Error Value: White=0.22/Black=0.08} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.17"]
[Round "10.6"]
[White "Sharevich, Anna"]
[Black "Foisor, Sabina-Francesca"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2276"]
[BlackElo "2205"]
[Annotator "TA"]
[PlyCount "151"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,151,-4,-2,-2,0,-6,0,-10,0,0,0,-7,16,32,39,0,0,0,0,0,0,0,0,0,0,-25,-14,-10,0,-14,0,0,27,0,20,18,54,28,60,-22,22,0,33,33,41,0,0,0,0,0,44,38,47,33,45,55,55,39,40,41,35,26,24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,503,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Bf4 d5 3. e3 e6 4. Nf3 Bd6 5. Ne5 O-O 6. Nd2 c5 7. c3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} b6 8. h4 Qc7 9. Bd3 Ba6 10. Bxa6 Nxa6 11. h5 Nb8 12. Qf3 {[#]} Ne8 $146 ({Predecessor:} 12... Nbd7 13. Qg3 Bxe5 14. dxe5 Ne4 15. Nxe4 dxe4 16. c4 b5 17. O-O bxc4 18. Rac1 Kh8 19. Rxc4 {1-0 (43) Demchenko,A (2641)-Sunilduth Lyna,N (2618) Lichess.org INT 2020}) 13. Qg3 Nc6 14. Ndf3 f6 15. Nxc6 Qxc6 16. h6 g6 17. O-O Rf7 18. Nh4 g5 {...Kh8 is the strong threat.} 19. Bxd6 Qxd6 20. f4 Kh8 21. Nf3 Nc7 22. Qh3 gxf4 23. exf4 Rg8 24. Rf2 (24. f5 {is more complex.} cxd4 25. cxd4 Re7 26. Rae1 Rd8 27. fxe6 Rxe6 28. Qf5) 24... Rg6 ({But not} 24... Qxf4 $2 25. Ne5 $18) 25. Nh4 ({White should play} 25. f5 $1 $14 exf5 26. dxc5 Qxc5 27. Re1) 25... Rg8 (25... Rxh6 $5 26. Nf5 $8 Rxh3 27. Nxd6 Rg7 $11) 26. Nf3 Qf8 ({Don't go for} 26... Qxf4 $2 27. Ne5 $18) (26... Rg6 $5 {[%cal Rd6f8]}) 27. f5 exf5 28. Raf1 f4 29. Nh4 Qxh6 30. Rxf4 Ne8 31. Qe6 Rfg7 32. Qxd5 Rg4 33. Rxg4 {[%csl Gd5][%cal Rg4g8]} Qe3+ $1 34. Kh1 {[%csl Gd5][%cal Rg4g8]} Rxg4 {[%cal Rg4h4]} 35. Nf5 Qe2 {[%mdl 64] [#] Double Attack} 36. Qf3 Qxf3 37. gxf3 $11 {[%mdl 4096] Endgame KRN-KRN} (37. Rxf3 {is interesting.} cxd4 38. Nxd4 Kg7 39. Re3 Kf7 40. Nc6) 37... Rf4 38. Re1 {[%cal Re1e8]} Rxf5 39. Rxe8+ {KR-KR} Kg7 40. dxc5 bxc5 41. Re7+ Kg6 42. Rxa7 Rxf3 43. a4 Rf1+ 44. Kg2 Rb1 45. Rb7 Ra1 46. Rb5 Rxa4 47. Rxc5 f5 48. b4 {And now Ra5 would win.} Ra3 49. b5 Kg5 50. b6 Rb3 51. Rc6 f4 52. c4 Kg4 53. c5 Rb2+ 54. Kf1 Kf3 {[%cal Rb2b1]} 55. Ke1 {Black must now prevent Rh6.} Ke3 $2 {[%mdl 8192]} (55... Rb1+ $1 $11 {and Black stays safe.} 56. Kd2 Ke4) 56. Kd1 $2 (56. Re6+ $18 Kd4 57. c6 Rxb6 58. Rd6+ Ke3 {[#]} 59. c7 $1 {[%mdl 512]} Rxd6 60. c8=Q) 56... f3 {The position is equal.} 57. Rf6 {Strongly threatening Kc1.} f2 58. Rf7 $1 Rb1+ (58... h5 $5 59. Re7+ $8 Kd4 $11) 59. Kc2 Rb5 60. Re7+ Kd4 61. Rf7 Ke3 (61... Rxc5+ {looks sharper.} 62. Kd2 Rb5 63. Rxf2 Rxb6 64. Rf7 Kd5) 62. Re7+ Kd4 63. Rf7 Kxc5 64. Rxf2 Rxb6 (64... Rb4 {with more complications.} 65. Rf7 Rxb6 66. Rxh7 Rb4 67. Rh5+ Kd6) 65. Kd3 Kd5 66. Rf5+ Ke6 67. Rh5 {Rh6+ would kill now.} Rb7 68. Ke4 Kf6 69. Kf4 Rb4+ 70. Kg3 Kg6 71. Rc5 h5 72. Rc6+ Kg5 73. Rc5+ Kg6 74. Rc6+ Kg5 75. Rc5+ Kg6 76. Rc6+ {Weighted Error Value: White=0.15/Black=0.16} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.18"]
[Round "11.1"]
[White "Lee, Megan"]
[Black "Sharevich, Anna"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2211"]
[BlackElo "2276"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,91,32,32,47,0,22,24,33,5,108,8,15,24,29,25,61,55,79,81,79,60,79,48,75,53,100,95,103,80,210,208,189,74,212,222,184,138,123,127,119,91,87,0,0,0,10,5,7,5,5,0,0,0,13,0,0,0,8,0,0,0,27,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 e6 5. Bd3 g6 6. Be3 Bg7 {B42: Sicilian: Kan Variation: 5 Bd3.} 7. Nd2 Ne7 8. f4 d6 {White has an edge.} 9. O-O {[#]} e5 $146 (9... O-O $11 {keeps the balance.}) ({Predecessor:} 9... O-O 10. Qe1 Nbc6 11. c3 Bd7 12. N4f3 b5 13. Qh4 Nc8 14. Qf2 b4 15. Rac1 bxc3 16. bxc3 {0-1 (54) Efimov,I (2470)-Forintos,G (2445) Bozen 1992}) 10. Ne2 (10. fxe5 $16 {Black must now prevent e6.} dxe5 11. N4f3) 10... exf4 11. Nxf4 Nbc6 12. c3 Ne5 13. Nc4 $36 {[%mdl 2048] [#] aiming for Nxd6+! White fights for an advantage.} Nxc4 14. Bxc4 O-O 15. a4 Nc6 16. h3 Ne5 17. Bb3 Qe7 18. Nd5 Qh4 19. Rf4 Qg3 (19... Qd8 $16) 20. Bf2 $18 Qg5 {Black wants to play ...Bxh3.} 21. h4 (21. Bh4 $18 {has better winning chances.} Qh5 22. Qxh5 gxh5 23. Nc7) 21... Qd8 (21... Qh6 $16) 22. Bb6 Qd7 23. Nf6+ Bxf6 24. Rxf6 Ng4 25. Rxd6 Qe7 26. Rd8 ({Better is} 26. Qd3 $16) 26... Be6 $1 $11 27. Rxa8 Rxa8 28. Bxe6 Qxe6 {[%mdl 64] [#] Double Attack} 29. Qd4 Re8 30. Re1 Qe7 31. g3 Ne5 {Threatens to win with ...Nf3+.} 32. Kg2 Qe6 33. Bc7 Nc6 34. Qb6 Qd7 35. Bf4 ({Wrong is} 35. Qxb7 $2 Ne5 $19) 35... h5 36. Re2 Qd1 {The position is equal.} 37. Kf2 Qh1 38. Qxb7 Qh2+ 39. Kf3 Qh1+ 40. Kf2 Qh2+ 41. Kf3 Qh1+ 42. Rg2 Qf1+ 43. Rf2 Qh1+ 44. Rg2 Qf1+ 45. Rf2 Qh1+ 46. Rg2 {Black escapes into a draw.  Weighted Error Value: White=0.17/Black=0.19} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.18"]
[Round "11.2"]
[White "Zatonskih, Anna"]
[Black "Paikidze, Nazi"]
[Result "1/2-1/2"]
[ECO "D24"]
[WhiteElo "2422"]
[BlackElo "2374"]
[Annotator "TA"]
[PlyCount "27"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,27,4,0,0,0,0,0,12,0,27,-3,0,0,22,-4,0,0,26,0]} 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 dxc4 5. e3 a6 6. a4 b6 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3.} 7. Bxc4 Bb7 8. O-O Bb4 {The position is equal.} 9. Qe2 O-O 10. Na2 Bd6 {[#]} 11. Nc3 $146 ({Predecessor:} 11. b4 Nbd7 12. Bb2 Qe7 13. Ne5 c5 14. b5 axb5 15. Bxb5 Rfc8 16. Nc1 Rc7 17. Ncd3 Rac8 18. Rfc1 cxd4 19. Rxc7 Rxc7 20. exd4 Qd8 {½-½ (27) Laurusas,T (2518)-Pultinevicius,P (2492) Warsaw 2021}) 11... Bb4 12. Na2 Bd6 13. Nc3 Bb4 14. Na2 {An uneventful encounter.  Weighted Error Value: White=0.08/Black=0.06} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.18"]
[Round "11.3"]
[White "Foisor, Sabina-Francesca"]
[Black "Eswaran, Ashritha"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2205"]
[BlackElo "2244"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,78,-45,10,17,8,0,0,0,30,14,12,-16,-14,-14,-14,-19,-22,-47,-45,-48,-47,-45,-36,-47,0,0,0,-2,0,-3,-2,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-29961,-29962,-29963,-29948,-29973,-29974,-29975,-29974,-29974,-29975]} 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. e3 Nbd7 6. Qc2 Bd6 7. b3 O-O 8. Bb2 e5 9. cxd5 cxd5 10. dxe5 Nxe5 11. Be2 Bg4 (11... Nxf3+ $1 $15 12. Bxf3 d4) 12. Nxe5 $11 {D45: Semi-Slav: 5 e3.} Bxe5 13. Bxg4 Nxg4 14. h3 {The position is equal.} Qh4 {...Nxe3 is the strong threat.} 15. O-O Rac8 16. Qf5 {[#]} Bxc3 $146 ({Predecessor:} 16... h5 17. Nd1 g6 18. Qd3 Rfd8 19. Bd4 Bh2+ 20. Kh1 Bb8 21. f4 Rc6 22. Kg1 Nh6 {1-0 (43) Schroll,G (2370)-Havlicek,J (2165) Vienna 1999}) 17. Bxc3 {[#] Black must now prevent Rac1.} Nxe3 $1 18. fxe3 {Threatens to win with Qe5.} Rxc3 19. Qxd5 Qe7 20. e4 Rc5 21. Qd4 Rd8 22. Qf2 Re5 23. Qxa7 Rxe4 24. Rad1 Re8 25. Rd2 h6 26. Qf2 Rc8 27. Rfd1 Qg5 28. Rd5 Rc1 29. Rxg5 Rxd1+ 30. Kh2 hxg5 {[%mdl 4096] Endgame KQ-KRR} 31. Qc2 Ree1 32. Qc8+ Kh7 33. Qxb7 f5 {( -> ...f4)} 34. Kg3 Re2 35. Qf3 $2 {[%mdl 8192] [#]} (35. a4 $11) 35... Re3 $1 {[%cal Re3f3][%mdl 512] Black mates.} 36. Qxe3 f4+ 37. Qxf4 gxf4+ 38. Kxf4 Ra1 39. a4 Rb1 {Weighted Error Value: White=0.34/Black=0.08} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.18"]
[Round "11.4"]
[White "Tokhirjonova, Gulrukhbegim"]
[Black "Cervantes Landeiro, Thalia"]
[Result "1/2-1/2"]
[ECO "A25"]
[WhiteElo "2322"]
[BlackElo "2175"]
[Annotator "TA"]
[PlyCount "148"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,148,20,36,18,27,18,24,12,47,53,53,53,57,52,58,58,58,54,52,37,50,50,94,88,90,72,73,89,83,101,108,106,171,165,166,145,195,184,177,183,190,180,175,181,166,189,176,162,177,175,170,155,145,58,82,91,77,25,30,-9,-9,-14,0,-21,0,0,0,-8,-8,-7,-8,-8,-8,-8,-8,-13,-15,-80,-80,-80,-80,-87,-58,-72,-56,-72,-72,-72,-66,-80,0,-75,-73,-75,-75,-70,-72,-72,-75,-106,-52,-64,-51,-53,-8,-28,-19,-19,-19,-19,-19,-19,-19,-31,-31,-49,-50,-79,-76,-79,-79,-77,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 a6 5. e3 d6 6. Nge2 {A25: English Opening vs King's Indian with ...Nc6 but without early d3.} Ba7 7. h3 Nge7 8. O-O {White has an edge.} h5 9. d4 h4 10. g4 f5 11. d5 Nb8 12. gxf5 Nxf5 {[#]} 13. Ne4 $146 ({Predecessor:} 13. Kh2 Nd7 14. e4 Nh6 15. f4 Qe7 16. f5 Nf6 17. Ng1 g6 18. fxg6 Qg7 19. Bg5 {½-½ (25) Palo,D (2558)-Rasmussen,A (2524) Denmark 2015}) 13... Nd7 14. b4 Qe7 15. a4 Rg8 16. N2c3 g5 17. Qh5+ Qf7 18. Bf3 Qxh5 19. Bxh5+ Ke7 20. Kh2 Nf8 (20... Nf6 $16) 21. Rg1 Nh7 22. c5 a5 23. Nb5 ({Don't play} 23. bxa5 $6 Bxc5 24. Nb5 (24. Nxc5 dxc5 25. Be2 Rxa5 $14) 24... Bd7 $14) 23... Bb8 24. bxa5 Rxa5 25. cxd6+ Nxd6 26. Ba3 Nf6 27. Nxf6 Kxf6 28. Bb4 Ra6 29. Nxd6 cxd6 30. Be2 Ra8 31. f4 (31. e4 $16) 31... Ba7 32. fxe5+ ({Of course not} 32. Bxd6 $6 exf4 33. Bxf4 Bf5 $11) 32... Kxe5 33. Bc3+ (33. Rad1 $16 {Threatens to win with Bc3+.} Bd7 34. Bc3+ Ke4 35. Bd3+ Kxd5 36. Bb5+ Ke6 37. Bc4+ Ke7 38. Bxg8 Rxg8 39. a5) 33... Kxd5 $11 34. Rad1+ Kc6 35. Bb5+ Kc7 36. Bb4 Bxe3 37. Bxd6+ Kb6 38. Rgf1 g4 39. hxg4 Bxg4 40. Rd3 $132 {[%mdl 2048] White is not holding back} Bc5 41. Rf7 Rac8 {[#] White must now prevent ...Bg1+!} 42. Bxc5+ Rxc5 43. Rd6+ (43. Rb3 $1 $11 {keeps the balance.}) 43... Ka7 44. Rd2 Rc3 45. Rg2 Rh3+ 46. Kg1 {[#]} Be6 $1 47. Rf6 (47. Rxg8 Bxf7) 47... Rxg2+ 48. Kxg2 $17 {[%mdl 4096] Endgame KRB-KRB} Rg3+ 49. Kh2 Rh3+ (49... Re3 {feels hotter.} 50. a5 Bc8 51. Rh6 Re5 52. Bd3 h3) 50. Kg2 Re3 51. Kf2 Re5 52. Rh6 h3 $1 53. Bf1 Bd7 54. Bxh3 Bxa4 (54... Bxh3 $17 55. Rxh3 Re4) 55. Re6 Rh5 (55... Rc5 {seems wilder.} 56. Rh6 b6 57. Rh8 Re5 58. Bg4 Re7) 56. Bg2 Rb5 57. Ke3 Rb2 58. Be4 b6 {[%cal Bb7b6,Bb6b5][%mdl 32]} 59. Kd4 Ka6 60. Kc3 Rb3+ 61. Kd4 Ka5 62. Re7 Rg3 63. Rc7 b5 64. Rc1 Kb4 65. Rb1+ Ka3 (65... Bb3 $17) 66. Bc6 {The position is equal.} Rg4+ 67. Kc5 $1 Rg5+ 68. Kb6 Rg6 {And now ...b4 would win.} 69. Kc5 Rg5+ 70. Kb6 Ka2 (70... Rg6 $5 {[%cal Rb5b4]} 71. Kc7 Ka2 $11) 71. Rb4 Ka3 72. Rb1 Ka2 73. Rb4 Ka3 74. Rb1 Ka2 {White really could win this.  Weighted Error Value: White=0.10/Black=0.11} 1/2-1/2

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.18"]
[Round "11.5"]
[White "Krush, Irina"]
[Black "Abrahamyan, Tatev"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2429"]
[BlackElo "2344"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,92,0,8,10,8,2,16,1,7,-10,3,-16,0,0,0,0,0,0,0,-12,-4,-7,0,-27,0,0,50,0,0,-22,-20,-133,-25,-35,-19,-28,-23,-80,-76,-83,-79,-88,-71,-50,10,10,14,8,10,0,0,0,29,0,0,-56,-56,-53,-58,-437,-424,-421,-413,-404,-409,-442,-442,-429,-421,-410,-413,-572,-572,-566,-547,-572,-570,-572,-572,-572,-570,-560,-558,-545,-536]} 1. c4 e6 2. Nc3 Bb4 3. Qb3 Ba5 4. Nf3 c5 5. g3 Nc6 6. Bg2 {A13: English Opening: 1...e6.} Nf6 7. O-O O-O 8. d3 {The position is equal.} d6 9. h3 h6 10. e4 {[#]} Bd7 $146 ({Predecessor:} 10... e5 11. Qd1 a6 12. Be3 Rb8 13. Nd2 Nd4 14. f4 b5 15. Rf2 Bd7 16. Rc1 Bb6 {1-0 (47) Bezman,V (2395)-Jascenko,O (2180) St Petersburg 1994}) 11. Be3 e5 12. Qd1 (12. Qxb7 $2 Rb8 $19) 12... a6 13. Nd2 Rb8 14. f4 exf4 15. gxf4 b5 16. Kh2 Nh7 17. Nd5 f5 18. b3 Re8 19. Rg1 Nb4 20. Nf1 (20. Nxb4 $11 {keeps the balance.} Bxb4 21. Qh5) 20... bxc4 (20... Nxd5 $17 21. cxd5 Qh4) 21. dxc4 fxe4 22. Nxb4 Bxb4 23. Ng3 (23. Qxd6 $11 Rb6 24. Qd5+ {[%mdl 64] Double Attack} Rbe6 25. Ng3 (25. Bxc5 Bxc5 26. Qxc5 Qh4 $15)) 23... Nf6 $17 24. Nxe4 Nxe4 25. Bxe4 Qf6 (25... Rxe4 26. Qd5+ Kh8 27. Qxe4 $16) 26. Qf3 Bf5 (26... Kh8 $15 27. Bd3 Bc6 $1) 27. Bxf5 $11 Qxf5 28. Rad1 Re6 29. Bc1 Rbe8 {[%cal Bb8e8,Be8e7,Be7e1][%mdl 32]} 30. Rg2 R8e7 (30... Rg6 {feels hotter.} 31. Rdg1 Rxg2+ 32. Rxg2 g6 33. Qg4 Kf7) 31. Bb2 Re3 32. Qd5+ ({Don't blunder} 32. Rxg7+ $2 Rxg7 33. Qd5+ Qxd5 $19) (32. Qg4 $11 Qxg4 33. hxg4) 32... Qxd5 $15 33. Rxd5 Re2 {Threatens to win with ...Rxg2+.} 34. Bc1 $2 {[%mdl 8192] [#] Now White is beyond hope.} (34. Rxd6 $2 Rxg2+ 35. Kxg2 Re2+ 36. Kg3 Rxb2 $19) (34. Ba1 $15) 34... Rxg2+ $1 $19 35. Kxg2 {[%mdl 4096] Endgame KRB-KRB} Re1 36. Rxd6 a5 (36... Rxc1 $2 37. Rxa6 h5 38. h4 $19) 37. a3 {[#]} Bc3 38. Rc6 ({Stronger than} 38. Rd8+ Kf7 $19) 38... Rxc1 39. Rxc5 {KRB-KR} Ra1 40. Rb5 Ra2+ {Black is clearly winning.} 41. Kf3 Rxa3 42. c5 {c6 is the strong threat.} Bb4 43. c6 {Strongly threatening c7.} Rxb3+ 44. Ke4 Rc3 45. Kd5 Kf7 46. Rb7+ Be7 {Weighted Error Value: White=0.32/Black=0.11} 0-1

[Event "USA Championship Women 2021"]
[Site "Saint Louis"]
[Date "2021.10.18"]
[Round "11.6"]
[White "Yip, Carissa"]
[Black "Nemcova, Katerina"]
[Result "1/2-1/2"]
[ECO "B60"]
[WhiteElo "2402"]
[BlackElo "2331"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,103,38,50,0,0,0,0,0,0,-23,-8,-18,-10,-52,-26,-57,-56,-47,-54,-116,-45,-65,-54,-139,-146,-140,-110,-145,-107,-145,-139,-152,-145,-167,-160,-210,-212,-317,-327,-293,-241,-236,-172,-169,-169,-164,-173,-183,-171,-181,-168,-167,-166,-163,-157,-164,-169,-175,-177,-172,-156,-163,-154,-146,-146,-135,-111,-119,-100,-100,-112,-117,0,-31,0,-121,-116,-121,-86,-79,0,-109,0,0,0,0,0,-4,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 g6 7. Bxf6 exf6 8. g3 {8.Bb5 is a critical line. B60: Sicilian: Richter-Rauzer: Unusual Black 6th moves and 6...Bd7 without 7 Qd2.} (8. Bb5 $5 {[%cal Rd4c6]} Bd7 9. Qd2 $14) 8... Bg7 9. Bg2 O-O 10. O-O {[#]} f5 $146 ({Predecessor:} 10... Nxd4 11. Qxd4 f5 12. Qd3 fxe4 13. Bxe4 Be6 14. Rab1 Rc8 15. Nd5 Re8 16. c4 Qa5 {0-1 (84) Rydstrom,T (2262)-Westerberg,J (2469) Vaxjo 2017}) 11. Nde2 fxe4 12. Bxe4 Bg4 13. Qd5 Qb6 14. a3 Rad8 ({Reject} 14... Qxb2 $6 15. Rfb1 $1 $14) 15. Rab1 Rfe8 16. Bf3 (16. Nf4 $15) 16... Be6 (16... Bxf3 $17 17. Qxf3 d5 {[%mdl 64] Deflection} 18. Nxd5 {[#]} Rxd5 $1 {[%mdl 512]} 19. Qxd5 Rxe2) 17. Qd2 $15 d5 {Strongly threatening ...d4.} 18. Na4 {[#]} (18. Nf4 $15) 18... Ne5 $1 $17 {[%cal Bc6e5,Be5c4,Bc4e3][%mdl 544]} 19. Bg2 {[#]} Nc4 {[%mdl 512]} 20. Qc1 Qd6 21. Nac3 d4 22. Ne4 Qc7 {aiming for ...Bd5.} 23. Nf4 Bf5 24. Re1 {[#]} Ne3 $1 {[%mdl 576] Discovered Attack} 25. Nf6+ (25. fxe3 {is a better defense.} Bxe4 26. Bxe4 Rxe4 27. Qd2) (25. f3 Nxc2) 25... Bxf6 $19 26. fxe3 Qxc2 27. e4 Qxc1 28. Rbxc1 Bd7 29. Nd5 Be5 30. Bf1 Kg7 31. Nb4 Rc8 32. Nd3 Rxc1 33. Rxc1 Bd6 34. Bg2 Rc8 35. Rd1 f6 36. Rd2 b6 37. Ne1 Be5 38. Nf3 Rc1+ 39. Kf2 Bg4 40. Nxd4 Bxd4+ 41. Rxd4 $17 {[%mdl 4096] Endgame KRB-KRB} Rc2+ {[%mdl 64] Double Attack} 42. Kg1 Rc1+ (42... Rxb2 $17 43. Rc4 Rd2) 43. Kf2 $1 $15 Rc2+ ({Better is} 43... h6 $15) 44. Kg1 $1 $17 Rxb2 45. Rc4 Rb1+ 46. Kf2 Rb2+ 47. Kg1 a5 (47... Rd2 $17 48. h3 Be6) 48. e5 $1 $11 {[%cal Re5f6] The position is equal.} Rb1+ (48... Be6 $5 49. Rc7+ $8 Kf8 $11) 49. Kf2 {Threatens to win with exf6+.} Rb2+ 50. Kg1 Rb1+ 51. Kf2 {And now exf6+ would win.} Rb2+ 52. Kg1 {White happily takes the draw.  Weighted Error Value: White=0.15/Black=0.17} 1/2-1/2

