[Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "1.1"] [White "Dominguez Perez, Leinier"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2758"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "97"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,96,15,37,0,0,0,0,0,0,0,0,0,35,25,29,6,2,0,0,0,0,0,0,0,0,0,0,-6,-6,-5, -5,-27,0,0,0,0,-8,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,-29986,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Rd1+ (9. Nc3 Ke8 10. h3 h5 11. Ne2 b6 12. Bg5 c5 13. Nc3 Bb7 14. Rad1 Bxf3 15. gxf3 c6 16. f4 Be7 17. Ne4 Rd8 18. Rxd8+ Bxd8 {1/2-1/2 (58) Dominguez Perez,L (2758)-Nakamura,H (2736) Lichess.org INT 2020}) 9... Ke8 10. Nc3 Ne7 {10...Be7 is the hot move. Played by Wesley So in May 2020.} 11. a4 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} Bg4 12. a5 {[#]} Ng6 $146 ({Predecessor:} 12... Bxf3 13. gxf3 Nf5 14. Ne4 Be7 15. Be3 h5 16. Rd3 h4 17. Rb3 Nxe3 18. fxe3 Rb8 19. Kf2 f5 20. exf6 gxf6 21. h3 Kf7 22. f4 f5 23. Nd2 Rhd8 24. Nf3 Bf6 25. Rb4 Rd5 {1/2-1/2 (25) Sjugirov,S (2675)-Lysyj,I (2594) Cheliabinsk 2020}) 13. Ra4 Bxf3 14. gxf3 Be7 15. f4 f5 16. exf6 Bxf6 17. Ne4 Rd8 18. Rxd8+ (18. Re1 {seems wilder.} Be7 19. b3 Nh4 20. Ng5 Kd7 21. Kf1) 18... Kxd8 19. Be3 b6 20. axb6 axb6 21. f5 Ne7 $1 22. Ra8+ Nc8 23. Kg2 Bxb2 24. c3 $1 Re8 25. Kf3 (25. f6 $5 {[%CAl Rf6g7]} Rxe4 26. f7 $11) 25... Kd7 26. f6 Nd6 27. Rxe8 Kxe8 28. fxg7 $11 {[%mdl 4096] Endgame KBN-KBN} Kf7 29. Bd4 Nxe4 30. Kxe4 {KB-KB} c5 31. Be5 {[#] Black must now prevent Kd5.} b5 32. Kd3 $1 b4 33. f4 Bxc3 34. Bxc3 bxc3 35. Kxc3 Kxg7 {K3P-KPP} 36. Kc4 Kf6 {[#] Threatens to win with ...Kf5.} 37. Kxc5 {KPP-KPP} Kf5 38. Kc6 Kxf4 39. Kxc7 {KP-KP} h5 40. Kd6 Kf3 41. h4 Kg4 42. Ke5 Kxh4 {( -> ...Kg3). KP-K} 43. Kf4 Kh3 44. Kf3 {The position is equal.} h4 45. Kf2 Kh2 46. Kf1 h3 47. Kf2 Kh1 48. Kf1 h2 (48... Kh2 $5) 49. Kf2 {Av CentiPawn Loss W=3357/B=-132. Weighted=4008/-89} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "1.2"] [White "Sevian, Samuel"] [Black "Swiercz, Dariusz"] [Result "1/2-1/2"] [ECO "B33"] [WhiteElo "2660"] [BlackElo "2649"] [Annotator "TA"] [PlyCount "131"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,130,5,0,-4,0,-5,14,7,18,9,6,6,12,0,0,0,0,0,0,0,0,0,-6,-22,0,0,21,0, -22,-23,-6,-8,-15,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,18,18,18,18,18,18,18,4,16,16, 16,16,16,14,14,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,82,83,80,82,122,166,171,0,0,0, 0,0,29,29,29,29,29,29,29,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 {[%CAl Bc6b8, Bb8d7,Bd7f6,Bf6e4][%mdl 32]} 9. a4 Be7 10. Be2 O-O 11. O-O {B33: Sicilian: Pelikan and Sveshnikov Variations.} Nd7 12. Bd2 $1 {[%mdl 4] is more profitable than 12.Kh1 at the moment.} a6 13. Na3 a5 14. Nb5 f5 15. f4 Nf6 {[#] } 16. Kh1 $146 ({Predecessor:} 16. Bc4 Kh8 17. Bc1 Ne4 18. Kh1 Bf6 19. c3 Qe7 20. Bd3 Nc5 21. Bc2 e4 22. Be3 {1/2-1/2 (28) Morales,O (2302)-Wettstein,K (2323) ICCF email 2018}) 16... Ne4 17. Be3 exf4 18. Bxf4 Bd7 19. Bd3 Bxb5 20. axb5 Bg5 21. Qc1 Bxf4 22. Qxf4 Qe7 23. Rae1 Rae8 24. Re2 Qe5 25. Qxe5 Rxe5 26. Kg1 g6 27. Bxe4 fxe4 28. Rxf8+ Kxf8 $11 {[%mdl 4096] Endgame KR-KR} 29. c4 e3 30. b3 Re4 31. Kf1 a4 32. bxa4 {Threatens to win with a5.} Rxc4 33. Ra2 Rc5 34. Ke2 Ke7 35. Kxe3 Rxd5 36. Rc2 {[#] aiming for Rc7+.} Kd7 $1 37. Ke4 Rh5 38. g3 Re5+ 39. Kd4 h5 40. Rf2 Ke7 41. Rf3 b6 42. Rb3 Kd7 43. Rc3 {Rc6 is the strong threat.} Re1 44. Rc6 Rd1+ 45. Ke4 Re1+ 46. Kf4 Ra1 47. Rc4 d5 48. Rc6 {[%mdl 64] [#] Double Attack} Rxa4+ 49. Ke5 h4 (49... Rg4 $11) 50. Rxg6 $16 ({Much worse is} 50. Kxd5 $6 hxg3 51. Rd6+ (51. hxg3 Rg4 $11) 51... Kc7 $11) 50... hxg3 51. hxg3 Rb4 52. Rxb6 Rg4 53. Rb7+ $2 ({Not} 53. Kxd5 Rg5+ 54. Kd4 Rg4+ 55. Kc5 Kc7 $11) ({Only move:} 53. Rd6+ $18 Kc7 54. Rc6+ (54. Rxd5 Rxg3 55. Ke4 Kb6 $11) 54... Kb7 55. Rc3 (55. Kxd5 Rg5+ 56. Kc4 Rg4+ 57. Kc3 Rxg3+ 58. Kd4 Rg4+ 59. Kd5 Rg7 $11)) 53... Kc8 $11 54. Rh7 Rxg3 55. Kxd5 Rg5+ 56. Kc6 Rg6+ 57. Kc5 Kb8 58. Rd7 Rh6 59. Rd6 Rxd6 {The position is equal.} 60. Kxd6 { Threatening mate with Kc6. KP-K} Kb7 61. Kc5 Kc7 62. b6+ Kb7 63. Kb5 Kb8 64. Ka6 {b7 would kill now.} Ka8 65. b7+ Kb8 66. Kb6 {Av CentiPawn Loss W=579/B=-4. Weighted=436/-4} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "1.3"] [White "Moradiabadi, Elshan"] [Black "Shankland, Sam"] [Result "1/2-1/2"] [ECO "A48"] [WhiteElo "2555"] [BlackElo "2691"] [Annotator "TA"] [PlyCount "98"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,98,12,0,0,4,8,14,16,0,0,0,6,-26,-27,-20,-20,-30,-35,-32,-29,-21,-27, -26,-22,-31,-20,-20,-21,-48,-31,-71,-12,-21,0,0,0,0,0,0,-3,-8,-10,-24,-4,-4,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,41,41,41,41,50,50,50,50,50,50,50,50,64,50,50, 50,50,41,41,41,41,41,41,41,41]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 O-O 5. e4 d5 6. exd5 Nxd5 7. c3 h6 {A48:1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} 8. Bh4 c5 {is the legacy move (8...Nd7).} 9. dxc5 Nf4 {The position is equal.} 10. Bg3 Qc7 11. Bxf4 Qxf4 12. Bc4 Nd7 {[#]} 13. Qe2 $146 ({ Predecessor:} 13. O-O Nxc5 14. Qe2 Be6 15. Bxe6 Nxe6 16. Rfd1 Rfd8 17. Nc4 h5 18. Ne3 Qe4 19. Qc4 Qxc4 20. Nxc4 {0-1 (63) Torre,E (2455)-Jones,G (2671) Reykjavik 2017}) 13... e6 14. Nb3 Qc7 15. O-O Nxc5 16. Nxc5 Qxc5 17. Rad1 a6 18. Rfe1 b5 19. Bd3 Ra7 20. Be4 Rc7 21. Nd4 {[#]} Qb6 (21... b4 $1 $17) 22. Nc2 $11 Kh7 23. g3 Rd7 24. Rxd7 Bxd7 25. Rd1 Bc8 26. Qe3 Qc7 27. Qd3 f5 28. Bg2 Bf6 29. Qd6 Rf7 30. Nb4 Rd7 31. Qxc7 Rxc7 32. Rd6 Be7 33. Rc6 Rxc6 34. Nxc6 { [%mdl 4096] Endgame KBB-KBN} Bc5 35. b4 Bb6 36. Ne7 Bd7 37. Bb7 a5 (37... Bd8 $5 {[%CAl Rd8e7]} 38. Nc6 Bxc6 39. Bxc6 Bf6 $11) 38. Bc8 {White is slightly better.} axb4 ({Reject} 38... Bxc8 $6 39. Nxc8 Bd8 40. Na7 $16) 39. cxb4 ({ Don't go for} 39. Bxd7 $2 bxc3 40. Ng8 c2 $19) 39... Bd8 {[#] White must now prevent ...Be8.} 40. Bxd7 Bxe7 41. Bxe6 Bxb4 $14 {KB-KB} 42. Bd7 Kg7 43. Bxb5 Ba3 44. Kf1 Kf6 45. Ke2 g5 46. f4 gxf4 47. gxf4 Bd6 48. Kf3 Ba3 49. Bd7 Kg6 { Av CentiPawn Loss W=-3/B=-4. Weighted=-4/-4} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "1.4"] [White "Xiong, Jeffery"] [Black "Liang, Awonder"] [Result "1-0"] [ECO "A48"] [WhiteElo "2709"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "93"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,93,16,14,19,27,27,39,34,34,0,0,0,12,5,41,40,48,47,50,54,55,54,37,58, 91,86,91,91,91,91,91,91,91,91,104,100,100,100,100,100,100,101,104,106,102,108, 268,268,268,266,322,322,322,322,308,116,301,301,346,348,348,363,363,348,346, 346,365,339,474,335,349,346,346,339,383,374,707,338,586,580,5119,1256,1989,626, 5929,4858]} 1. Nf3 Nf6 2. d4 g6 3. Nbd2 d5 4. b4 Bg7 5. e3 O-O 6. Be2 {D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} c6 {Recently 6...a5 got a lot of attention.} 7. O-O a5 8. b5 {White is slightly better.} c5 9. c3 {[#]} Nbd7 $146 ({Predecessor:} 9... c4 10. Ne5 Bf5 11. Re1 Nfd7 12. Nxd7 Nxd7 13. Bf3 Nb6 14. e4 dxe4 15. Nxe4 Nd5 {0-1 (39) Kastner,W (2139) -Thorfinnsson,B (2457) Tallinn 2019}) 10. a4 b6 11. Ba3 Bb7 12. c4 Rc8 13. Rc1 Re8 14. cxd5 Nxd5 {next ...cxd4 is good for Black.} 15. dxc5 $1 Nxc5 16. Bxc5 bxc5 {White leaves nothing to chance now.} 17. Qb3 Nb6 18. Rfd1 Qc7 19. Nc4 Bd5 20. Nfd2 Red8 21. Qc2 e6 22. Nxa5 Ra8 23. Ndc4 Bxc4 24. Nxc4 Nxa4 25. Bf3 Rxd1+ 26. Rxd1 Ra7 27. Rd6 $36 {[%mdl 2048] Hoping for b6. White is in control.} Nc3 $2 (27... Nb2 $16 {was worth a try.} 28. b6 {[%mdl 64] Double Attack} Ra1+ 29. Rd1 Rxd1+ 30. Bxd1 Qd8 31. Nxb2 {[%mdl 64] Discovered Attack} Bxb2) 28. b6 $18 {[%mdl 64] Double Attack} Ra1+ 29. Rd1 $1 {[%mdl 64] Promotion} Nxd1 30. bxc7 Nxe3+ 31. Bd1 $1 ({Worse is} 31. Qd1 Nxd1 32. c8=Q+ Bf8 $15) 31... Nxc2 { [%CAl Ra1d1]} 32. c8=Q+ {[%mdl 64] Double Attack} Bf8 {[%CAl Ra1d1]} 33. Qd8 Kg7 34. h4 Nd4 35. Ne3 Nf5 36. h5 Nxe3 37. fxe3 Ra6 {...Rd6 would now be nice for Black.} 38. Bb3 Rd6 39. Qg5 Rd7 40. Qe5+ Kg8 41. Bc4 Rd1+ 42. Kf2 Rc1 $2 { [#]} (42... Rd2+ 43. Kf3 Rd1) 43. Qf4 (43. Bxe6 $142 $1 fxe6 44. Qxe6+ Kh8 45. Qb3) 43... Kg7 $2 (43... Rc2+ {is a better defense.} 44. Kf3 Rd2) 44. g4 { White is clearly winning.} Be7 45. Qe5+ (45. h6+ $142 Kg8 46. Qe5 $1 {[%mdl 512]} Rc2+ 47. Kf3) 45... Kg8 46. Qb8+ (46. h6 $142 Bf8 {[#]} 47. Bxe6 $1 { [%mdl 512]} Rc2+ 48. Kf3) 46... Kg7 47. Qb2+ {[%mdl 64] Double Attack. Av CentiPawn Loss W=-87/B=-99. Weighted=-51/-68} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "1.5"] [White "Robson, Ray"] [Black "Ramirez, Alejandro"] [Result "1/2-1/2"] [ECO "B46"] [WhiteElo "2673"] [BlackElo "2567"] [Annotator "TA"] [PlyCount "104"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,104,22,23,33,23,23,27,36,24,34,29,30,10,7,12,7,-12,-6,-9,0,0,12,-10, -7,-8,-8,-8,-8,-4,0,0,0,0,0,0,0,0,0,0,3,5,19,12,20,17,18,11,18,14,13,8,14,8,8, 8,80,0,58,8,25,0,494,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be3 Nf6 7. Qd2 { 7.Qf3 is becoming the main line.} e5 {B46: Sicilian: Taimanov: 5 Nc3 a6.} 8. Nf5 d5 $1 {[%CAl Rd5d4]} 9. exd5 {[#]} Bxf5 $5 $146 {[%mdl 8] White has an edge. An interesting novelty.} ({Predecessor:} 9... Nb4 10. Ng3 Nbxd5 11. Nxd5 Qxd5 12. O-O-O Be6 13. Qxd5 Nxd5 {1/2-1/2 (13) Dominguez Perez,L (2746) -Andreikin,D (2718) Havana 2015}) 10. dxc6 Qc7 11. Bd3 Rd8 {[#] Strongly threatening ...e4.} 12. Qe2 (12. cxb7 {is interesting.} Qxb7 13. f3 Be7 14. O-O Qxb2 15. Rfb1) 12... Bxd3 $1 13. cxd3 Qxc6 14. O-O Be7 15. Bg5 O-O 16. Qxe5 Rfe8 17. Qf5 g6 18. Qh3 Nd5 19. Bxe7 Rxe7 20. Qh4 {And now Nxd5 would win.} Qf6 21. Qxf6 Nxf6 22. Rfd1 Red7 23. Kf1 Rxd3 24. Rxd3 (24. Ke2 $5 {[%CAl Rd1d3]} R3d7 25. Rxd7 Rxd7 26. Rd1 $11) 24... Rxd3 $11 {[%mdl 4096] Endgame KRN-KRN} 25. Ke2 Rd7 26. Rd1 Rxd1 27. Nxd1 {KN-KN} Kf8 28. Kd3 Ke7 29. Kd4 Kd6 30. Nc3 b6 31. h3 h6 32. Ne4+ Nxe4 33. Kxe4 {KP-KP} Ke6 (33... a5 $11) 34. Kd4 (34. b4 $16) 34... Kd6 (34... h5 $11) 35. h4 Ke6 36. b4 Kd6 $2 {[%mdl 8192] [#]} (36... g5 $11) 37. f3 $2 (37. g4 $1 $18 Ke6 38. a4) 37... Ke6 {The position is equal.} 38. Ke4 Kd6 39. g4 f6 40. Kd4 Ke6 41. Ke4 Kd6 42. h5 gxh5 43. gxh5 Ke6 $1 44. Kf4 f5 $1 45. Ke3 Ke5 46. f4+ Kd5 47. Kd3 $1 b5 48. a3 Kc6 {White must now prevent ...Kd5.} 49. Ke3 Kc7 (49... Kd5 $5 50. Kd3 $8 Kc6 $11) 50. Kd3 Kc6 { Hoping for ...Kd5.} 51. Ke3 Kd5 {aiming for ...Kc4.} 52. Kd3 Kc6 {Av CentiPawn Loss W=-16/B=-16. Weighted=-30/-17} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "1.6"] [White "So, Wesley"] [Black "Lenderman, Aleksandr"] [Result "1-0"] [ECO "C41"] [WhiteElo "2770"] [BlackElo "2634"] [Annotator "TA"] [PlyCount "197"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,197,36,45,43,27,35,8,8,15,8,12,11,7,34,35,27,16,14,12,21,14,16,12,6, 0,4,4,4,5,5,8,8,5,25,0,4,0,0,0,0,0,-10,-37,-14,-12,-12,-8,-12,-30,-19,-41,0,0, 0,0,5,0,5,0,0,0,0,0,0,0,15,0,15,15,15,15,15,15,15,15,15,15,15,0,15,15,15,15,15, 15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15, 15,15,0,15,15,15,15,15,15,15,15,15,15,15,0,15,15,15,15,15,15,15,15,15,0,8,8,8, 8,8,8,8,8,8,8,8,0,0,0,0,0,0,0,198,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29974,29974, 29981,29982,29982,29983,29983,29984,29984,29985,29985,29986,29986,29987]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Re1 a5 9. h3 Nb6 {The main line 9...Nb6 scores better than 9...exd4. C41: Philidor Defence.} 10. Bf1 exd4 11. Qxd4 $5 {[%mdl 4] Leaves trodden paths.} d5 { [#] The position is equal.} 12. Bg5 $146 ({Predecessor:} 12. Bf4 Bb4 13. e5 Nfd7 14. Bg5 Be7 15. Bxe7 Qxe7 16. Qe3 Re8 17. b3 Qc5 18. Qxc5 Nxc5 {0-1 (58) Yildiz Kadioglu,B (2244)-Zhu,C (2476) Nalchik 2010}) 12... h6 13. Bh4 dxe4 14. Nxe4 Qxd4 15. Nxd4 Nbd5 16. Nxf6+ Bxf6 17. Bxf6 Nxf6 18. Bc4 Rd8 19. c3 Kf8 20. Re5 Bd7 21. Rae1 Re8 22. f4 b6 23. Kf2 Rad8 24. Nf3 c5 25. Bb3 Bc6 26. Rxe8+ Bxe8 27. Re2 b5 28. axb5 Bxb5 29. Re5 (29. c4 $5 {[%CAl Rc4b5]} Ba6 30. Re1 $11 ) 29... Bc6 30. Bc4 a4 31. Re2 Ne4+ 32. Ke3 Nd6 33. Bd3 Re8+ (33... f6 { looks sharper.} 34. Kf2 Rb8 35. Nh4 Bb5 36. Bxb5 Rxb5 37. Kf3 Kf7) 34. Kf2 Rxe2+ 35. Kxe2 $11 {[%mdl 4096] Endgame KBN-KBN} f6 36. g3 Ke7 37. Nh4 g5 38. Nf5+ Nxf5 39. Bxf5 gxf4 40. gxf4 {KB-KB} Kd6 41. Ke3 Be8 42. Be4 Bd7 43. h4 Be8 44. Bb1 Bc6 45. Kd3 Bb5+ 46. Ke4 Bd7 $1 47. Ba2 Bc8 48. Bf7 Bd7 49. Bc4 Kc6 50. Be2 Kd6 51. Bd1 f5+ 52. Kd3 Bb5+ 53. Kc2 Bc4 {[#] White must now prevent ... Bb3+.} 54. Kd2 Bb5 $1 55. Kc1 Kd5 56. Bc2 Bd7 57. Kb1 Kc4 58. Ka2 Kb5 $1 59. Ka3 Ka5 60. Bd1 Bb5 61. Bf3 Bd7 62. Bh5 Bc6 63. Be2 Bb5 64. Bf3 Bd7 65. Bd5 Kb5 66. Bf7 Ka5 67. Bc4 Bc8 68. Be2 Bd7 69. Bd3 Be6 70. Be2 Bd7 71. Bf3 Bb5 72. Bd5 Bd7 73. Ba2 Bc8 74. Bb1 Be6 75. Bc2 Bd7 76. h5 Be8 77. Bxf5 Bxh5 78. Bh7 Kb6 79. f5 {aiming for Bg6.} Kc7 80. Kxa4 Kd6 81. Bg6 Bf3 82. f6 h5 83. Kb5 { Strongly threatening f7.} h4 {...h3 is the strong threat.} 84. Bf5 {Threatens to win with f7.} Bg2 $2 (84... Bc6+ $11 {and Black is okay.} 85. Ka5 c4) 85. f7 $2 (85. b4 $18 c4 86. Kxc4) 85... Ke7 86. Kxc5 {Hoping for b4.} h3 87. Bxh3 Bxh3 88. c4 Kxf7 {KB-KPP} 89. Kd6 Ke8 90. Kc7 Bg2 91. b4 Bf1 $1 92. c5 Bb5 $2 { [%mdl 8192] [#]} (92... Ke7 $11) 93. c6 {White mates.} Ba4 94. Kb7 Ke7 95. c7 Bd7 96. c8=Q Bxc8+ 97. Kxc8 Kd6 98. Kb7 Kd7 99. b5 {Av CentiPawn Loss W=-4/ B=-15. Weighted=-7/-16} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "2.1"] [White "Nakamura, Hikaru"] [Black "Lenderman, Aleksandr"] [Result "1/2-1/2"] [ECO "B10"] [WhiteElo "2736"] [BlackElo "2634"] [Annotator "TA"] [PlyCount "288"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,288,31,26,29,31,33,35,32,18,23,22,28,22,38,12,12,19,26,16,23,29,16,0, 0,0,0,0,97,84,114,74,80,87,74,91,71,79,73,0,0,0,0,0,0,0,0,0,0,0,29,29,29,29,29, 29,23,30,30,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,8,8,4547,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 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, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Qe2 Nxe4 6. Qxe4 Be6 {B11: Caro-Kann: Two Knights Variation.} 7. b3 Nd7 8. Bb2 Nf6 {White is slightly better.} 9. Qe3 Bf5 10. Nd4 {[#]} Bg6 $146 ({Predecessor:} 10... Qd7 11. Bc4 Nd5 12. Bxd5 Qxd5 13. O-O e6 14. c4 Qe4 15. Nxf5 Qxf5 16. Rad1 Bc5 {1/2-1/2 (61) Grandelius,N (2691) -Lenderman,A (2648) Douglas 2019}) 11. f4 {With the idea f5.} Qa5 12. Bc4 e6 { [#]} 13. f5 $1 $36 {[%mdl 2560] White has the initiative.} Bxf5 14. O-O O-O-O $1 15. Nxf5 exf5 16. Bxf7 Rxd2 17. Kh1 Ng4 $1 {[%CAl Rg4e3]} 18. Qe6+ Kb8 {[#]} (18... Kc7 $1 $11 {keeps the balance.} 19. Rxf5 Qxa2 20. Be5+ Kb6) 19. h3 $1 $16 {[%CAl Rh3g4]} ({Don't go for} 19. Rxf5 $2 Qc7 $19) ({And not} 19. Qxf5 Qxf5 20. Rxf5 Rxc2 $15) 19... Rd6 20. Qxf5 ({Don't play} 20. Rxf5 $6 Qc7 $11) ( 20. Qe1 {with more complications.} Qc7 21. hxg4 Qxf7 22. Be5 Ka8 23. Bxd6 Bxd6 24. Rxf5 Qg6 25. Qh4) 20... Qxf5 21. Rxf5 Nh6 22. Rf2 Nxf7 23. Rxf7 Rd2 24. Bxg7 ({Better is} 24. Be5+ $16 Ka8 25. c4) 24... Bxg7 $11 25. Rxg7 Rxc2 $16 { [%mdl 4096] Endgame KRR-KRR} 26. Rf1 Rxa2 27. Rff7 b5 28. Rb7+ Ka8 29. Rbc7 h5 30. Rxc6 h4 31. b4 Ra4 32. Rcc7 Rxb4 33. Rxa7+ Kb8 34. Ra5 Rh5 35. Ra6 Rc4 36. Rb6+ Kc8 37. Kh2 Rcc5 38. Rg4 Rhg5 39. Rxh4 Rc2 40. Rg4 Rxg4 41. hxg4 $11 { KR-KR} Rc5 42. Kh3 Kc7 43. Rf6 b4 44. Rf4 Rb5 45. g5 b3 {And now ...b2 would win.} 46. g6 b2 47. g7 Rg5 48. Rb4 Rxg7 49. Rxb2 Kd6 50. Re2 Rh7+ 51. Kg4 Rg7+ 52. Kf5 {Strongly threatening g4.} Rg3 $2 {[%mdl 8192] [#]} (52... Rf7+ $11 53. Kg5 Rf8) 53. Kf4 $2 (53. Re6+ $1 $18 Kd7 54. Rg6) 53... Rg8 {The position is equal.} 54. g4 Rf8+ 55. Kg3 {Hoping for g5.} Rg8 56. Re1 Kd5 57. Re7 {Black should prevent Kf4.} Kd6 58. Re2 Kd5 59. Re3 Kd6 $1 60. Re2 Kd5 61. Re7 { Threatens to win with Kf4.} Kd6 62. Re4 Kd5 63. Kf3 Rf8+ 64. Rf4 Rg8 65. Rf5+ Ke6 66. Kf4 {g5 is the strong threat.} Ra8 67. Kg3 Rg8 68. Kh4 Rh8+ 69. Rh5 Rg8 70. Ra5 Kf6 71. Rf5+ Ke6 72. Rf4 {Black must now prevent g5.} Ke5 73. Kg3 (73. Rf1 {keeps more tension.} Rh8+ 74. Kg3 Rg8 75. Rc1 Kf6 76. Kf4) 73... Ke6 74. Rf5 Ra8 75. Kf4 Rb8 76. Kg5 Rg8+ $1 77. Kh4 Rh8+ 78. Rh5 Rg8 79. Rh7 Kf6 80. Rh6+ Kg7 81. Ra6 (81. g5 {seems wilder.} Ra8 82. Kg3 Ra3+ 83. Kf2 Ra2+ 84. Ke3) 81... Rc8 82. Kh5 Rc5+ 83. g5 Rc7 84. Rb6 Ra7 85. Rg6+ Kh7 86. Rb6 Kg7 87. Rb5 Kh7 88. Rd5 Kg7 89. Rd4 Kh7 90. Re4 Kg7 91. Re3 Kh7 92. Rf3 Kg7 93. Rf2 Kh7 94. Rg2 Kg7 95. Rg1 Kh7 96. Rh1 Kg7 97. Rh4 Rb7 98. Rf4 Ra7 99. Rb4 Kh7 100. Rb3 Kg7 101. Rb2 Kh7 102. Rb1 Kg7 103. Rc1 Kh7 104. Rd1 Kg7 105. Rd2 Kh7 106. Re2 Kg7 107. Re3 Kh7 108. Rd3 Kg7 109. Rd4 Kh7 110. Rc4 Kg7 111. Rc5 Kh7 112. Rb5 Kg7 113. Rb6 Kh7 114. Rb8 Kg7 115. Rc8 Kh7 116. Rd8 Kg7 117. Re8 Kh7 118. Rf8 Kg7 119. Rf4 (119. Rb8 {is interesting.} Ra1 120. Kg4 Rg1+ 121. Kf5 Rf1+ 122. Ke4) 119... Kh7 120. Rf3 Kg7 121. Rg3 Kh7 122. Rg4 Kg7 123. Rh4 Rb7 124. Rh3 Ra7 125. Rf3 Kh7 126. Re3 Kg7 127. Rd3 Kh7 128. Rc3 Kg7 129. Rb3 Kh7 130. Rb4 Kg7 131. Rb5 Kh7 132. g6+ Kg7 133. Kg5 Rc7 134. Ra5 Rb7 135. Rd5 Ra7 136. Re5 Rb7 137. Kf5 Ra7 138. Rb5 Rc7 139. Ra5 Rb7 140. Re5 Ra7 141. Kg5 Rb7 142. Rf5 Ra7 143. Rf7+ Rxf7 144. gxf7 Kxf7 {Av CentiPawn Loss W=-8/B=-8. Weighted=-17/-7 } 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "2.2"] [White "Ramirez, Alejandro"] [Black "So, Wesley"] [Result "0-1"] [ECO "B92"] [WhiteElo "2567"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "124"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,124,11,20,0,0,0,0,0,0,0,0,0,0,0,0,0,-19,-29,-32,-39,-16,-14,-13,-15, -19,-26,-14,-14,-10,-7,-14,-20,-17,-26,-20,-27,-20,-60,-20,-20,-20,-20,-20,-43, -42,-42,-43,-41,0,0,0,-43,-39,-41,-41,-34,-6,-14,-14,-22,-20,-19,-19,-19,-15, -63,-63,-122,-122,-254,-254,-252,-247,-269,-269,-251,-251,-323,-316,-316,-284, -249,-212,-220,-220,-220,-212,-212,-185,-194,-177,-177,-177,-177,-177,-177, -177,-177,-162,-382,-367,-1438,-1437,-1212,-1177,-1177,-1097,-797,-566]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O O-O 9. Qd3 Be6 10. Bd2 {B92: Sicilian Najdorf: 6 Be2.} Nc6 {10...Nc6 was played by the boomers.} 11. Nd5 a5 12. a4 {The position is equal.} Bxd5 13. exd5 Nb4 14. Bxb4 axb4 15. Qb5 {[#]} Rc8 $146 ({Predecessor:} 15... Qd7 16. Qxb4 Nxd5 17. Qb5 Qxb5 18. axb5 e4 19. Rfd1 Nf6 20. g4 h6 21. Rxa8 Rxa8 {0-1 (35) Kruk,S (2153)-Shcherbatyuk,S (2172) ICCF email 2013}) 16. Rac1 Qd7 17. Rfd1 Qxb5 18. Bxb5 Rc7 19. c4 bxc3 20. bxc3 Ne4 21. c4 f5 22. f3 Nc5 23. Nxc5 Rxc5 24. Kf2 g6 25. Ke2 h5 26. Kd3 Bd8 27. Rb1 Ba5 28. Bd7 Rc7 29. Be6+ Kg7 30. c5 Rxc5 31. Rxb7+ Kf6 32. Rb5 Rc3+ 33. Kd2 $1 Rc5+ 34. Kd3 Rxb5 35. axb5 $15 {[%mdl 4096] Endgame KRB-KRB} Bb6 36. Ra1 g5 37. h3 Rb8 38. Bd7 g4 39. hxg4 hxg4 40. fxg4 e4+ 41. Ke2 f4 {[%mdl 1024] Black has compensation.} 42. g5+ (42. Ra6 $15) 42... Ke5 $17 43. g6 {[#] This costs White the game.} (43. Bh3 $17 {might work better.}) 43... Rg8 $1 $19 44. Ra6 Bc5 45. b6 {And now b7 would win.} Rxg6 46. Bh3 {[#] Hoping for b7.} Rg3 $1 {Threatens to win with ...f3+.} ({But not} 46... Kxd5 $2 47. b7 $18) 47. b7 Rb3 48. Bc8 Rb2+ ({Inferior is} 48... Kxd5 49. Kd1 $11) 49. Kd1 e3 ({Wrong is} 49... Kxd5 $2 50. Ra8 $18) 50. Kc1 Bd4 { ( -> ...e2)} 51. Bg4 Rxb7 {White must now prevent ...Rb2.} 52. Bf3 Bc3 53. Ra4 Bb4 54. Kd1 Kd4 55. Ke2 Kc3 56. Ra1 Bc5 {Strongly threatening ...Rb2+.} 57. Rc1+ Kd4 {aiming for ...Rb2+.} 58. Rc2 $2 (58. Rd1+ {is the only way for White. } Ke5 59. Kd3) 58... Rb1 {...Bb4 is the strong threat.} 59. Ra2 $2 (59. Bg4) 59... Bb4 {[%csl Gb4][%CAl Rb1e1] Black is clearly winning.} 60. Bh5 Re1+ 61. Kf3 Rf1+ 62. Kg4 Rf2 {Av CentiPawn Loss W=-23/B=-10. Weighted=-23/-11} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "2.3"] [White "Liang, Awonder"] [Black "Robson, Ray"] [Result "0-1"] [ECO "B10"] [WhiteElo "2592"] [BlackElo "2673"] [Annotator "TA"] [PlyCount "64"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,64,20,23,28,25,31,27,20,23,31,22,41,32,42,47,35,31,33,60,74,-106, -108,-100,-94,-114,-104,-127,-164,-193,-203,-232,-231,-226,-140,-222,-189,-198, -200,-727,-711,-722,-713,-712,-710,-648,-687,-1045,-986,-1141,-1069,-1138, -1083,-1702,-1201,-12839,-12837]} 1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Qe2 Nxe4 6. Qxe4 Nd7 {B11: Caro-Kann: Two Knights Variation.} 7. Bc4 {Ng5! is the strong threat.} Nf6 8. Ne5 {[%csl Ge5][%CAl Rc4f7]} e6 {White has an edge.} 9. Qe2 b5 10. Bd3 Qc7 11. a4 Bd6 {[#]} 12. Nxc6 $1 {[%mdl 512]} b4 (12... Qxc6 $2 13. Bxb5 Qd7 14. Bxd7+ $18) 13. Nd4 a6 14. Nf5 Bb7 {[#]} 15. Nxg7+ $146 (15. Nxd6+ $16 {is forced if you want to stay better.} Qxd6 16. f3) ({Predecessor:} 15. Nxd6+ Qxd6 16. O-O h5 17. Qe3 Rd8 18. b3 Nd5 19. Qg3 Nf4 20. Bb2 Bxg2 21. Qxg7 Bxf1 {1-0 (34) Martirosyan,H (2622)-Keymer,V (2568) chess.com INT 2020}) 15... Kf8 $17 {Black keeps a firm grip on the game.} 16. Nh5 Nxh5 $1 17. Qxh5 { [#]} Rg8 $1 18. Bxh7 Rxg2 19. d4 Bf4 20. Qh4 Bxc1 21. Rxc1 f5 {Hoping for ... Rg7.} 22. Kd2 {[#]} (22. Ke2 $17 {is a better defense.} Rg7 {[%mdl 64] Discovered Attack} 23. Bxf5 (23. Qf6+ $2 Qf7 $19) 23... exf5 24. Rhg1 Qe7+ 25. Qxe7+ Rxe7+ 26. Kd2) 22... Rg4 $1 $19 {( -> ...Qf4+)} 23. Qf6+ Qf7 24. Qh8+ $2 (24. Qh6+ Qg7 25. Qxg7+ Rxg7 26. Rhe1) 24... Ke7 {Black is clearly winning.} 25. Qe5 {[#]} Rxd4+ $3 {[%mdl 512]} 26. Qxd4 Rd8 27. Qxd8+ Kxd8 28. Rhd1 Qxh7 29. c3 Qxh2 30. Ke2+ Ke7 31. cxb4 Qe5+ 32. Kf1 Bf3 {Av CentiPawn Loss W=-123/ B=-33. Weighted=-82/-33} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "2.4"] [White "Shankland, Sam"] [Black "Xiong, Jeffery"] [Result "1/2-1/2"] [ECO "D23"] [WhiteElo "2691"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "57"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,57,-5,15,2,8,0,2,7,25,29,36,27,36,11,25,17,5,6,6,8,6,12,15,0,41,0,0, -32,0,-8,0,0,0,-3,-9,-14,-17,-6,0,-13,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Qa4+ c6 5. Qxc4 Bg4 6. Nc3 {D23: Queen's Gambit Accepted: 3 Nf3 Nf6 sidelines.} Nbd7 7. e4 {7.Bf4 is the fancy move.} Bxf3 8. gxf3 e6 9. Be3 Be7 {[#]} 10. Be2 $146 ({Predecessor:} 10. Qb3 Qb6 11. O-O-O Qxb3 12. axb3 O-O 13. f4 a6 14. Bh3 Rfe8 15. e5 Nd5 16. Nxd5 cxd5 {1/2-1/2 (29) Gelfand,B (2729) -Gagunashvili,M (2591) Rishon Le Ziyyon 2006}) 10... O-O 11. Qb3 c5 12. d5 exd5 13. Nxd5 Nxd5 14. Qxd5 Qc7 15. O-O-O Rad8 16. Qf5 Bf6 17. f4 g6 18. Qh3 ({ Wrong is} 18. Rxd7 $2 Qb6 $19) 18... Bd4 19. Kb1 {The position is equal.} Qc6 20. Qf3 Nf6 21. Bxd4 Rxd4 22. Rxd4 cxd4 23. Bd3 $1 Rc8 24. Rd1 Nh5 25. Qg4 Nf6 26. Qe2 Nh5 27. Qg4 Nf6 28. Qe2 Nh5 29. Qg4 {Av CentiPawn Loss W=-6/B=-5. Weighted=-6/-5} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "2.5"] [White "Swiercz, Dariusz"] [Black "Moradiabadi, Elshan"] [Result "1/2-1/2"] [ECO "C11"] [WhiteElo "2649"] [BlackElo "2555"] [Annotator "TA"] [PlyCount "88"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,88,0,8,0,24,20,34,18,19,17,20,15,25,23,17,18,28,11,14,-35,58,-30,29, 27,27,20,47,47,35,0,0,-4,0,0,-5,0,43,9,13,0,100,73,75,62,81,100,122,24,17,0,44, 38,13,0,0,0,14,-2,-2,-4,-10,-39,-39,-39,-21,-31,-21,-21,-21,-21,-21,-27,-27, -27,-27,-39,-39]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. a3 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4.} a6 9. dxc5 Nxc5 10. Be2 {White is slightly better.} O-O 11. O-O b5 12. Qe1 b4 13. axb4 Nxb4 14. Nd4 Bd7 {[#]} 15. Nd1 $146 ({Predecessor:} 15. Bf3 Qc7 16. Qg3 f5 17. Qh3 Ne4 18. Bxe4 dxe4 19. g4 Bc5 20. Rf2 Rae8 21. Rd1 {1/2-1/2 (31) Bragin, A (2540)-Roslov,V RCCA 1997}) 15... a5 16. Nf2 f5 ({Black should play} 16... Qc7 $15) 17. Kh1 (17. exf6 $14 Bxf6 18. Qd1) 17... Ne4 (17... Qb6 $142) 18. c3 $11 Nc6 19. Nxe4 dxe4 20. Nb5 Qb8 21. c4 Nb4 22. Rd1 Rd8 23. Qf2 {Black must now prevent Bb6.} Bxb5 24. cxb5 Nd5 25. Bc4 Qb7 26. b3 a4 (26... g6 $11) 27. bxa4 Rxa4 28. Bxd5 $1 exd5 29. b6 Rc4 30. Bd4 ({White should try} 30. g4 $16) 30... Qc6 $1 31. Qe3 Rb8 {Black wants to play ...Bc5.} 32. Rc1 Bd8 {[%CAl Rd8b6]} 33. Rxc4 dxc4 34. Rb1 c3 (34... h6 {with more complications.} 35. h3 c3 36. Rc1 Bxb6 37. Rxc3 Bxd4 38. Qxd4 Qe6) 35. Qxc3 (35. Bc5 {looks sharper.} c2 36. Qb3+ Kh8 37. Qxc2 Bxb6 38. Qf2) 35... Qxc3 36. Bxc3 {[#] b7 is the strong threat.} Rxb6 37. Rxb6 (37. Ra1 {feels hotter.} Be7 38. g3 Bc5 39. Ra5 Be3 40. Kg2) 37... Bxb6 {[%mdl 4096] Endgame KB-KB} 38. g3 Kf7 39. Kg2 Ke6 40. Kf1 Kd5 41. Ke2 g6 42. h3 Bd8 43. Bd2 h6 44. h4 h5 {Av CentiPawn Loss W=-14/B=-12. Weighted=-16/-11} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "2.6"] [White "Dominguez Perez, Leinier"] [Black "Sevian, Samuel"] [Result "0-1"] [ECO "A20"] [WhiteElo "2758"] [BlackElo "2660"] [Annotator "TA"] [PlyCount "140"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,140,20,20,19,20,20,20,17,14,-3,23,16,21,20,7,15,14,21,17,18,15,11,13, 10,14,10,10,9,12,10,25,18,15,26,39,41,38,35,28,29,24,28,32,31,31,29,26,32,64, 64,89,-121,-103,-118,-106,-105,-106,-113,-109,-97,-76,-81,-80,-77,-52,-60,-42, -92,-88,-143,-143,-159,-162,-163,-140,-140,-112,-126,-105,-469,-467,-472,-469, -1175,-212,-1055,-820,-977,-588,-1028,-1008,-846,-145,-152,-166,-268,-266, -29971,-29972,-5391,-5281,-5655,-4989,-4133,-2475,-5616,-4618,-6605,-1448, -29974,-29975,-29979,-29980,-29980,-29981,-29982,-29983,-29986,-29987,-29989, -29987,-29989,-29983,-29990,-29987,-29983,-29984,-29984,-29985,-29986,-29987, -29987,-29988]} 1. c4 e5 2. g3 c6 3. Nf3 e4 4. Nd4 d5 5. cxd5 Qxd5 6. Nc2 { A20: English Opening: 1...e5.} Nf6 7. Nc3 Qe5 8. Bg2 {The position is equal.} Na6 {[%CAl Bb8a6,Ba6c5,Bc5b3][%mdl 32]} 9. a3 {[#]} Nc5 $146 ({Predecessor:} 9... Bc5 10. b4 Bb6 11. Bb2 O-O 12. Qb1 Qe7 13. Ne3 Bxe3 14. fxe3 Bf5 15. O-O Bg6 {1-0 (40) Bicer,A (1805)-Tarun,K (2070) Antalya 2019}) 10. b4 Nb3 11. Rb1 Nxc1 12. Qxc1 Be7 13. Ne3 Be6 14. Qc2 {[%CAl Rc3e4]} Bd5 15. Ncxd5 cxd5 16. Qa4+ Kf8 17. O-O g6 18. d3 a6 19. dxe4 dxe4 20. Nc4 Qe6 {...b5 is the strong threat.} 21. Qb3 Re8 {[%CAl Ba8e8,Be8e6,Be6d6][%mdl 32]} 22. Nd2 {Threatens to win with Qxe6.} Bd8 23. Qxe6 Rxe6 24. e3 Kg7 25. Rfc1 Rhe8 26. Rc8 Rd6 27. Nb3 Re7 28. a4 Nd5 29. Rd1 Bc7 30. Nc5 $2 (30. Bf1 $16) 30... Nb6 $17 {[%mdl 64] [#] Discovered Attack} 31. Rxd6 Bxd6 32. Rd8 Bxc5 $1 33. bxc5 Nxa4 {[%mdl 4096] Endgame KRB-KRN} 34. Rc8 a5 {[%CAl Ba6a5,Ba5a4,Ba4a3][%mdl 32]} 35. c6 bxc6 36. Rxc6 Nb2 37. Ra6 a4 38. Bf1 Rb7 39. Be2 (39. g4 $142) 39... Rb3 40. Kf1 a3 41. Ke1 Nd3+ 42. Bxd3 Rxd3 {KR-KR} 43. g4 Rb3 44. g5 $2 {[%mdl 8192] This move loses the game for White.} (44. Kf1 $17) 44... Rb1+ $19 45. Ke2 Ra1 (45... Rb2+ $2 46. Kf1 $19) 46. Ra7 (46. Kd2 $142 a2 47. Kc3) 46... Kf8 $2 (46... a2 47. h4 h6) 47. Ra4 $2 (47. Ra8+ Ke7 48. Ra4) 47... a2 48. h4 Kg7 49. Ra7 h5 50. Ra6 Rh1 $2 (50... f5 $19 {has better winning chances.} 51. Ra7+ Kf8 52. Ra8+ Ke7) 51. Rxa2 $17 Rxh4 52. Ra5 {[#]} (52. Kf1 {was worth a try.}) 52... Rg4 $1 $19 53. Re5 $2 (53. f4 $19) 53... h4 54. Ra5 h3 55. Ra1 Rxg5 56. Rh1 Rh5 57. Kf1 Kf6 58. Kg1 Kf5 (58... Kg5 $142 59. Kh2 Kg4) 59. Kh2 Kg4 {Black mates.} 60. Rc1 Kf3 61. Rc2 f5 62. Ra2 g5 63. Rb2 g4 64. Ra2 Rh8 65. Kg1 Rd8 66. Ra1 Rd2 67. Ra5 Rd1+ 68. Kh2 Kxf2 69. Rxf5+ Kxe3 70. Rf8 Rd2+ {Av CentiPawn Loss W=280/ B=-99. Weighted=234/-111} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "3.1"] [White "Sevian, Samuel"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2660"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "60"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,60,32,8,30,7,9,5,18,11,30,0,14,10,14,9,46,51,35,35,39,47,41,39,44,35, 49,37,33,0,0,0,32,0,0,0,4,10,7,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Nc3 Ke8 10. h3 h5 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 11. Bf4 Be7 12. Rad1 Be6 13. Ne4 Rd8 14. b3 Rxd1 15. Rxd1 Bd5 16. Re1 {[#]} h4 $146 ({Predecessor:} 16... Bb4 17. Re2 Kd7 18. c4 Be6 19. Bd2 Be7 20. Bc1 Rd8 21. Rd2+ Ke8 22. Rxd8+ Bxd8 23. Kf1 b6 24. Ke2 c5 25. Kd3 {1/2-1/2 (25) Siikaluoma,A (2544)-Turkov,V (2547) ICCF email 2014}) 17. Nf6+ gxf6 18. exf6 {[%mdl 64] [#] Pin} Bxf3 19. gxf3 Rg8+ 20. Kf1 Rg6 21. fxe7 $14 {[%mdl 4096] Endgame KRB-KRN} Nd4 22. Re4 Nxf3 23. Be3 Rf6 24. Ke2 Ng1+ 25. Kf1 Nf3 {The position is equal.} 26. c3 a6 27. Ke2 Ng1+ 28. Kf1 Nf3 $1 29. Ke2 Ng1+ 30. Kf1 Nf3 $1 {Av CentiPawn Loss W=-7/B=-6. Weighted=-6/-7} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "3.2"] [White "Moradiabadi, Elshan"] [Black "Dominguez Perez, Leinier"] [Result "1/2-1/2"] [ECO "D02"] [WhiteElo "2555"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "69"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,69,1,19,-8,4,-15,0,0,-3,-21,-18,-14,-20,-49,-29,-26,-24,-29,-31,-31, -21,-20,-23,-24,-16,-55,-47,-47,-61,-51,-47,-46,-40,-49,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,-2,-13,0,0,0,0,0,0,4,0,0,-10]} 1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. Nbd2 Bd6 5. Bg5 h6 6. Bh4 {D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} (6. Bxf6 $5 gxf6 7. e4 $14) 6... c5 7. e3 Nc6 8. c3 O-O 9. Bb5 {[#]} Qb6 $146 ({Predecessor:} 9... cxd4 10. exd4 Bd7 11. O-O Be7 12. Bd3 Nh5 13. Bxe7 Qxe7 14. Re1 Rfd8 15. g3 Nf6 {1/2-1/2 (56) Megaranto,S (2530) -Suvrajit,S (2221) Chennai 2019}) 10. a4 cxd4 11. exd4 Nh5 12. O-O a6 13. Bxc6 $1 bxc6 14. Ne5 Nf4 15. Bg3 Bxe5 16. dxe5 Ng6 $1 17. b4 a5 18. bxa5 Qxa5 19. Qc2 c5 20. Nb3 Qc7 21. f4 Bd7 22. f5 $1 {[%CAl Rf5g6] The position is equal.} exf5 {[#]} 23. e6 $1 {[%CAl Re6f7][%mdl 512]} f4 (23... Bxe6 24. Bxc7) 24. exf7+ $1 Kxf7 25. Bf2 Rxa4 26. Nxc5 Rxa1 27. Rxa1 Ne7 28. Qe2 Bf5 29. Bd4 Nc6 30. Qf3 Qd6 31. Nb7 Qe6 32. Qxf4 {[#] Strongly threatening Bc5.} Kg8 {aiming for ...Bd3.} 33. Nc5 Qg6 34. Rf1 Rf7 35. Qg3 {Av CentiPawn Loss W=-5/B=-4. Weighted=-4/-5} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "3.3"] [White "Xiong, Jeffery"] [Black "Swiercz, Dariusz"] [Result "1-0"] [ECO "B33"] [WhiteElo "2709"] [BlackElo "2649"] [Annotator "TA"] [PlyCount "97"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 31,97,24,40,36,30,31,29,0,0,0,0,0,0,0,0,0,34,22,101,60,180,81,233,233, 233,106,101,96,201,201,204,207,201,213,195,198,266,280,260,256,315,336,443,362, 461,361,354,354,910,363,564,547,560,569,502,483,635,579,575,560,672,659,29972, 29973,29964,29967,6362,6362]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. c3 Bg7 12. Bd3 Be6 13. Qh5 O-O 14. exf5 Bxd5 15. f6 e4 16. fxg7 Re8 $1 17. Be2 {B33: Sicilian: Pelikan and Sveshnikov Variations.} Ne5 18. O-O Qf6 19. Nc2 $5 {[%mdl 4] White has an edge. Exploring less charted territory.} Nf3+ 20. Bxf3 (20. gxf3 Re5 $17 ) 20... Re5 21. Qh3 exf3 22. Ne3 $36 {[%mdl 2048] White is more active.} fxg2 23. Rfd1 Be6 {[#]} 24. Qg3 $146 ({Predecessor:} 24. Rxd6 Qxf2+ 25. Kxf2 Bxh3 26. Rg1 Rae8 27. Nd5 Kxg7 28. Nf4 Rf5 29. Rd4 h5 30. Kg3 {1-0 (68) Eric,J (2324)-Mastrapovic,V (2237) Veliko Gradiste 2018}) 24... h5 (24... d5 $11) 25. Rd4 (25. Nxg2 Rg5 $17) 25... Kh7 (25... d5 $14) 26. Rad1 (26. Qxg2 $2 Rg5 $19) (26. f4 $18 Rc5 27. Rxd6 (27. Qxg2 Rg8 $14)) 26... Rg8 $2 (26... Qxg7 $16 27. Qxg7+ Kxg7) 27. f4 $18 (27. Nxg2 $2 Rg5 $19) 27... Rc5 28. f5 ({Not} 28. Nxg2 Rxg7 29. Qd3+ Bf5 $11) (28. Rxd6 $18 {is more deadly. Black must now prevent Nd5.} Qxg7 29. Qxg7+ (29. Nxg2 Qxg3 30. hxg3 Rxg3 $15) 29... Kxg7 30. Kxg2 (30. Rxa6 Re8 $16)) 28... Bxf5 {Threatening ...Be6.} 29. Nd5 Qh6 {[#]} ({Don't go for} 29... Qxg7 $2 30. Qxd6 Rxd5 31. Rxd5 $18) (29... Qe5 $16 {might work better.}) 30. Qf2 $1 {[%CAl Rf2f5]} Rxd5 31. Rxd5 Be6 32. Rxd6 Rxg7 33. Rxa6 Rg6 (33... Rg4 $142 34. Rad6 Rf4) 34. Qd2 Qg7 35. Rd6 Rg5 36. Qd3+ Bf5 37. Qd4 Qg8 38. Qf4 ({Less strong is} 38. Qf6 Be6 $18) 38... Be6 39. Qe4+ Rg6 $2 {[#]} (39... Qg6 40. Qxg6+ Rxg6) 40. R1d2 $2 (40. Rxe6 $1 {[%mdl 512]} fxe6 41. Rd7+ Kh8 42. Qd4+ Rg7 43. Rd8) 40... Kh6 (40... Qc8 $142 41. Rxg2 Qc5+ 42. Rd4 Bxa2) 41. Rxg2 Rxg2+ 42. Qxg2 {[%mdl 4096] Endgame KQR-KQB} Qc8 43. Qd2+ Kh7 44. Qd3+ Kh6 45. Qe3+ Kh7 46. Qg5 Qc4 47. Qxh5+ Kg7 48. Qg5+ Kh7 49. Rd4 {Av CentiPawn Loss W=-33/B=652. Weighted=-47/98} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "3.4"] [White "Robson, Ray"] [Black "Shankland, Sam"] [Result "1-0"] [ECO "B67"] [WhiteElo "2673"] [BlackElo "2691"] [Annotator "TA"] [PlyCount "79"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 20,79,29,4,19,16,22,27,31,0,0,7,9,0,38,50,85,79,63,54,57,79,307,321,325, 322,323,321,525,504,665,637,833,837,792,793,714,573,564,561,674,665,918,895, 1911,1788,2270,2114,2703,6379,5361,4870,5883,5887,6692,6805,5883,2208,29986, 29986,29985,29984]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f3 Nxd4 {outshines the older 9...Be7. Played by Alireza Firouzja in September 2020.} 10. Qxd4 Be7 11. h4 Qc7 {B67: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7, lines without 9 f4 Be7.} 12. Kb1 b5 { [%CAl Bb7b5,Bb5b4][%mdl 32]} 13. g4 O-O {White has an edge.} 14. Qd2 {[#] Strongly threatening e5!} b4 15. Ne2 {[%CAl Bc3e2,Be2g3,Bg3h5][%mdl 32] aiming for e5!} Rfc8 {[#]} 16. Ng3 $5 $146 {[%mdl 8] An interesting novelty.} ({ Predecessor:} 16. Be3 d5 17. e5 Ne8 18. Nd4 Bc5 19. f4 a5 20. g5 a4 21. h5 b3 22. c3 {0-1 (42) Engineer (2446)-Cato the Younger (2504) playchess.com INT 2007 }) 16... a5 17. Nh5 $1 a4 18. Bxf6 Bxf6 (18... gxf6 $2 19. Bd3 $18) 19. Nxf6+ gxf6 20. Bd3 {Threatens to win with e5.} a3 $2 {[#]} (20... b3 $16) 21. e5 $1 $18 {White threatens Qh6! and mate.} Kf8 22. exf6 Ke8 23. b3 (23. Bxh7 Bc6 $16) ({And not} 23. Qxb4 axb2 24. Bxh7 Ra6 $11) 23... Qb6 $2 (23... Qc5 24. Qg5 (24. Bxh7 Bc6 $18) 24... Kd8 25. Qxc5 (25. Bxh7 Qc3 $16) (25. Qg8+ Kc7 $11) 25... Rxc5) 24. Bxh7 {[%mdl 64] Discovered Attack} d5 25. h5 Bc6 26. Bg8 Kd7 27. Bxf7 Rf8 28. Bg6 Rxf6 29. f4 Raf8 30. f5 e5 31. g5 Rxf5 32. Bxf5+ Rxf5 33. h6 d4 34. h7 Bxh1 35. h8=Q Be4 36. Qe2 {Threatening mate with Qg7+.} Qc6 37. Qc4 Qxc4 38. bxc4 Rf2 39. Qxe5 Bxc2+ 40. Kc1 {Black got outplayed after the opening. Av CentiPawn Loss W=62/B=-132. Weighted=32/-93} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "3.5"] [White "So, Wesley"] [Black "Liang, Awonder"] [Result "1-0"] [ECO "B12"] [WhiteElo "2770"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "103"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,103,2,-6,0,4,6,5,-8,18,9,18,22,0,10,6,-21,-18,-67,-45,-59,-47,-89,-80, -81,-80,-157,-163,-202,-134,-141,-158,-138,-124,-122,-96,-119,-119,-118,-109, -111,-126,-114,-106,-120,-113,-187,-8,-1,0,-2,-2,-1,0,-12,0,0,0,0,0,0,0,0,0,0, 3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,16,43,26,41,36,38,17,48,70,1212,911,2117, 1847,29957,11058]} 1. e4 c6 2. d4 d5 3. f3 g6 4. e5 c5 {[#]} 5. dxc5 $146 ({ Predecessor:} 5. c3 Nc6 6. Be3 Qb6 7. Qd2 c4 8. Be2 h5 9. f4 Bf5 10. Nf3 e6 11. O-O Be7 {0-1 (80) Grabics,M (2306)-Krizsany,L (2451) Hungary 2006}) 5... e6 6. Be3 {B12: Caro-Kann: Advance Variation.} Nd7 7. Bb5 Qc7 8. f4 {The position is equal.} Bxc5 9. Bxc5 Qxc5 10. Nc3 a6 11. Bxd7+ Bxd7 12. Nf3 Qe3+ 13. Qe2 Qxf4 14. g3 Qh6 15. h4 Ne7 16. Qf2 O-O 17. Ne2 ({White should try} 17. Nh2 Qh5 18. Qf4) 17... f6 $17 18. Nf4 g5 19. exf6 Rxf6 ({But not} 19... Qxf6 20. hxg5 Qxb2 21. O-O $15) 20. Ne5 gxf4 21. Nxd7 {[#]} Rf7 $1 22. g4 Qg7 23. O-O-O Nc6 24. Nc5 Re8 25. Rhe1 Ne5 26. Qd4 Nxg4 27. Rxe6 {[#]} (27. Qxg7+ $17 {is a better defense.} Kxg7 28. Nxe6+ Kg8 29. Ng5 Rxe1 30. Rxe1) 27... Rxe6 $2 (27... Ref8 $1 $19 28. Ree1 f3 29. Qxg7+ Rxg7) 28. Nxe6 $11 Qe5 29. Qxd5 Qxd5 30. Rxd5 { [%mdl 4096] Endgame Threatening mate with Rd8+. KRN-KRN} Rf6 31. Ng5 h6 { Hoping for ...f3.} 32. Nf3 Ne3 33. Rd7 Rf7 34. Rd4 Kg7 35. Kd2 Rf8 36. h5 Rf5 37. c4 b5 38. b3 bxc4 39. bxc4 Nf1+ 40. Kd3 Ng3 41. Rd7+ Rf7 42. Rd6 Re7 43. Rg6+ Kf7 {White must now prevent ...Re3+.} 44. Kd4 Nxh5 45. Rxa6 Nf6 46. Ne5+ Kg7 47. c5 h5 48. c6 {Rb6 is the strong threat.} h4 49. Rb6 {Threatens to win with Rb7.} Kh6 $2 {[%mdl 8192]} (49... Ne8 $14) 50. Nd7 $18 h3 51. Nxf6 { Ng8+ would kill now.} h2 52. Ng4+ {[%mdl 64] Double Attack. Never resign too early! Av CentiPawn Loss W=-43/B=-74. Weighted=-32/-90} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.26"] [Round "3.6"] [White "Lenderman, Aleksandr"] [Black "Ramirez, Alejandro"] [Result "1/2-1/2"] [ECO "D15"] [WhiteElo "2634"] [BlackElo "2567"] [Annotator "TA"] [PlyCount "83"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,83,13,6,33,39,12,13,29,18,19,18,18,14,17,19,25,33,30,0,18,-11,18,23, 20,8,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-18,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. cxd5 cxd5 6. Bf4 Nc6 7. Rc1 Bg4 {D13: Slav Defence: Exchange variation without ...Bf5.} 8. Ne5 Nxe5 9. Bxe5 e6 10. Qb3 Bd6 11. Bxd6 Qxd6 12. e3 O-O 13. Bd3 {[#]} Rfc8 $146 ({Predecessor:} 13... b5 14. O-O Rac8 15. h3 Bf5 16. Bxf5 exf5 17. a4 bxa4 18. Nxa4 Rb8 19. Qa3 Qxa3 20. bxa3 Rb3 21. Nc5 Rxa3 22. Ra1 Rxa1 23. Rxa1 Ra8 24. Rxa6 Rxa6 {1/2-1/2 (24) Benkovic,P (2434)-Solak,D (2639) Biel 2014}) 14. O-O b5 {[%CAl Bb7b5,Bb5b4][%mdl 32]} 15. a4 b4 16. Ne2 a5 17. f3 Bh5 18. Bb5 { The position is equal.} Bg6 19. Nf4 Rc7 20. Nxg6 hxg6 21. Rc2 Rac8 22. Rfc1 e5 23. dxe5 Qxe5 {White should prevent ...Rxc2.} 24. Rxc7 Rxc7 25. Rxc7 Qxc7 26. Qd1 Qc5 27. Qd2 g5 28. h3 Nh5 29. Qd4 Qxd4 30. exd4 $11 {[%mdl 4096] Endgame KB-KN} Kf8 31. Kf2 Nf4 32. g3 Ne6 33. Ke3 Ke7 34. Bd3 g6 35. Bc2 f5 36. f4 gxf4+ 37. gxf4 Ng7 38. Bd1 Ke6 39. b3 Kd6 40. h4 Nh5 41. Bxh5 gxh5 42. Kd3 { A rather calm draw. Av CentiPawn Loss W=-2/B=-2. Weighted=-1/-2} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "4.1"] [White "Nakamura, Hikaru"] [Black "Ramirez, Alejandro"] [Result "1-0"] [ECO "B46"] [WhiteElo "2736"] [BlackElo "2567"] [Annotator "TA"] [PlyCount "77"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,77,28,20,22,32,22,25,26,16,23,141,160,135,155,135,152,129,91,91,91, 91,92,124,88,89,112,104,79,107,114,107,103,122,116,131,131,154,145,118,119,126, 125,125,105,101,106,99,95,135,113,145,137,218,213,349,316,542,512,768,723,1870, 1860,1864,1857,1558,1448,1039,1020]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Nxc6 bxc6 7. Qf3 {B46: Sicilian: Taimanov: 5 Nc3 a6.} d5 8. Qg3 Nf6 9. Be2 {White has an edge.} d4 10. e5 {[#]} dxc3 $146 (10... Nd7 $1 $11 11. Ne4 Qa5+ 12. c3 dxc3 13. Nxc3 (13. Qxc3 $2 Bb4 $19) 13... Nxe5) ({Predecessor: } 10... Nd7 11. Ne4 Qa5+ 12. c3 dxc3 13. Nxc3 Qxe5 14. Bf4 Qf6 15. O-O-O Be7 16. h4 Qg6 {1/2-1/2 (34) Karjakin,S (2721)-Mamedyarov,S (2725) Nalchik 2009}) 11. exf6 $16 gxf6 12. O-O ({Don't play} 12. bxc3 $6 Bd6 $14) 12... Bd6 13. Qxc3 Bb7 14. Bf3 Qc7 15. g3 Be5 16. Qc5 Bd6 17. Qc4 c5 18. Bxb7 Qxb7 19. Be3 Qb5 20. Qe4 Rc8 21. Rad1 Qc6 {[#]} 22. Qh4 $1 Ke7 23. Rd2 Be5 24. c3 Rcd8 25. Rxd8 Rxd8 26. Qxh7 c4 27. Qh5 Rd3 28. Re1 Qb5 29. Qe2 Qd5 30. h4 f5 31. h5 f4 (31... Kf6 $16 32. Bb6 Bxg3) 32. gxf4 $18 Bf6 (32... Bg7 {was necessary.} 33. Qg4 Bh6) 33. Qg4 Qb5 $2 {[#]} (33... Kd7 {might work better.} 34. a4 Bh8) 34. f5 $1 { White is clearly winning.} e5 (34... Qxf5 35. Qxf5) 35. h6 {Black must now prevent Bg5.} Rd8 36. Bg5 Qd5 37. Bxf6+ Kxf6 38. Qg7+ Kxf5 39. h7 {Av CentiPawn Loss W=-10/B=-37. Weighted=-8/-39} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "4.2"] [White "Liang, Awonder"] [Black "Lenderman, Aleksandr"] [Result "1/2-1/2"] [ECO "A39"] [WhiteElo "2592"] [BlackElo "2634"] [Annotator "TA"] [PlyCount "238"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,238,24,26,32,37,22,41,26,57,58,69,45,45,51,56,12,20,0,0,-28,2,8,21, 13,0,0,0,-50,-43,-42,-31,-28,-23,-31,8,9,26,9,12,14,195,193,214,208,204,193, 212,209,215,213,208,193,195,184,298,296,278,295,279,291,275,285,331,324,338, 327,341,342,335,335,329,254,214,0,329,328,320,320,287,177,174,174,175,175,170, 163,175,173,152,153,148,154,304,304,297,289,282,268,29978,29979,29979,29980, 29985,29985,29985,29986,29982,29983,29983,29980,29984,29981,29981,29980,29979, 0,29981,29982,29980,60,60,60,60,60,60,60,60,60,60,60,60,60,69,69,69,69,69,60, 69,69,69,69,69,69,69,60,69,69,69,69,69,69,69,27,43,8,8,8,8,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 c5 2. c4 Nc6 3. Nc3 Nf6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d4 cxd4 8. Nxd4 Qa5 9. Nc2 {Recently 9.e3 got a lot of attention. } d6 10. Bd2 Qh5 11. e4 {A38: Symmetrical English vs ...g6:4 Bg2 Bg7 5 Nf3 Nf6. } Qxd1 12. Rfxd1 {[#]} Nd7 $146 ({Predecessor:} 12... Ne5 13. Ne3 Be6 14. b3 Rac8 15. h3 Rfe8 16. f4 Nc6 17. Ned5 Nd7 18. Rac1 f5 19. exf5 gxf5 {1-0 (50) Cheparinov,I (2670)-Saric,I (2667) chess24.com INT 2020}) 13. Ne3 {White is slightly better.} Nc5 14. Rab1 Be6 15. Ncd5 (15. b4 $5 {[%CAl Rb4c5]} Nd3 16. Ncd5 $14) 15... a5 16. b3 Rfd8 17. a3 Kf8 18. Nc7 Rac8 19. Ned5 a4 20. b4 Nd7 21. Nxe6+ fxe6 22. Nf4 Kf7 23. Bh3 Nf8 $1 24. c5 Ne5 25. Bc3 Nf3+ {[%mdl 64] Discovered Attack} 26. Kg2 Ng5 27. Bxg7 Kxg7 28. Bg4 $36 {[%mdl 2048] White is more active.} h5 29. h4 Nxe4 $2 (29... hxg4 $11 30. hxg5 Kf7) 30. Bxe6 $18 ({ Resist} 30. Nxe6+ $6 Nxe6 31. Bxe6 Nc3 $16) 30... Rb8 {With the idea ...Nc3.} 31. Re1 Nf6 32. Rbc1 Kh6 33. cxd6 exd6 34. Rc7 Re8 35. Re3 b5 36. Rf7 N6h7 ( 36... Ng4 {might work better.} 37. Bxg4 Rxe3) 37. f3 Nxe6 38. Rxe6 Rxe6 39. Nxe6 {[%mdl 4096] Endgame KRN-KRN} Re8 40. Nd4 Re5 41. g4 {Threatens to win with f4.} Rd5 42. g5+ Nxg5 43. hxg5+ Rxg5+ {KRN-KR} 44. Kf2 Rd5 45. Ke3 Re5+ 46. Kf2 (46. Kd2 $142) 46... Rd5 $1 {[%CAl Rd5d4]} 47. Ne6 {And now f4 would win.} Rd3 48. Rf8 {[%CAl Rf8h8]} Kh7 49. Ng5+ Kg7 50. Rf7+ $1 Kg8 51. Rb7 $1 Rxa3 52. Rxb5 Rb3 53. Rb7 a3 54. Kg3 a2 55. Ra7 Rxb4 (55... Rb2 $16 {keeps fighting.} 56. Ne4 Kf8 57. Nxd6 Rxb4 58. Rxa2 g5) 56. Rxa2 Rb5 57. f4 Rb3+ 58. Kh4 {aiming for Ra8+.} Rb4 $2 (58... Rb8 $18 59. Ra6 Rf8) 59. Ra8+ Kg7 60. Ra7+ Kh8 61. Nf7+ Kg7 {[#]} 62. Kg5 $1 Kf8 63. Nxd6 Rd4 64. Rf7+ Kg8 65. Rd7 h4 66. Rd8+ Kh7 67. Rd7+ Kg8 68. Kxg6 {[%CAl Rd7d8]} Rxf4 {[#]} 69. Nf7 $2 (69. Rd8+ $1 {mates} Rf8 70. Ne8 Kh8 71. Rd4 Rxe8 72. Kf7 Rf8+ 73. Kxf8 Kh7 74. Rxh4+ Kg6 75. Ke7) 69... Rg4+ 70. Ng5 {[%CAl Rd7d8]} Kf8 71. Rh7 Ke8 72. Kf5 Rg1 73. Ne4 (73. Nf3 {looks sharper.} Rf1 74. Ke4 h3 75. Rxh3 Kd7 76. Rh6) 73... Re1 74. Ke5 h3 75. Rxh3 Ke7 76. Rh7+ $1 Ke8 77. Kd5 Kd8 78. Nc5 Rd1+ 79. Ke6 Re1+ 80. Kd6 {Rh8+ would kill now.} Rd1+ 81. Kc6 Ke8 82. Ne4 Kd8 83. Rg7 (83. Nf6 { is more complex.} Rc1+ 84. Kd6 Rd1+ 85. Nd5 Ke8 86. Rb7) 83... Ke8 84. Nd6+ Kf8 85. Rb7 Rd2 86. Kd7 Re2 87. Rb3 Kg7 {The position is equal.} 88. Rg3+ Kf6 89. Rf3+ Ke5 90. Rf8 {Re8+ is the strong threat.} Rd2 91. Re8+ Kd4 92. Rh8 Re2 93. Rh4+ Kd3 94. Kc6 Rg2 95. Rh3+ Kd4 96. Nf5+ Ke4 97. Nd6+ Kd4 98. Rh4+ Kd3 99. Kc5 Rg5+ 100. Kb4 Rd5 101. Nc4 Rd4 102. Rh3+ Ke2 103. Kc3 Rd8 104. Ne5 Rd5 105. Nd3 Rd8 106. Kc4 Rc8+ 107. Kd4 Rd8+ 108. Ke4 Re8+ 109. Ne5 Re7 110. Rh2+ Ke1 111. Rh8 Ke2 112. Kd4 Re6 113. Nd3 {White threatens Nf4+ and mate.} Rd6+ 114. Ke4 Re6+ 115. Ne5 Re7 116. Kf4 Kd2 117. Rd8+ Kc3 118. Ke4 Rh7 119. Rc8+ Kb3 { Black escapes into a draw. Av CentiPawn Loss W=-13/B=-27. Weighted=-14/-30} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "4.3"] [White "Shankland, Sam"] [Black "So, Wesley"] [Result "0-1"] [ECO "E25"] [WhiteElo "2691"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "68"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,68,18,19,22,38,16,52,0,0,0,0,-3,-2,-63,-77,-75,-67,-270,-271,-271, -271,-252,-12,-16,0,0,80,-647,-632,-837,-837,-813,-675,-763,-529,-742,-756, -745,-735,-709,-702,-1165,-926,-1070,-1044,-2252,-1884,-29990,-29991]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc5 Qa5 9. e4 Ne7 10. Be3 O-O 11. Qb3 Qc7 12. Bb5 {12.Bb5 scores better than 12.a4. 12.Nh3 is vanishing. E25: Nimzo-Indian: Sämisch: 5...c5 6 f3 d5 7 cxd5.} e5 13. Ne2 Be6 {[#]} 14. c4 $146 (14. Bc4 $14) ({Predecessor:} 14. Qb2 Nd7 15. Bxd7 Qxd7 16. O-O Rfd8 17. Rfe1 Nc6 18. Bf2 Na5 19. Rab1 Qc7 20. Nd4 exd4 21. cxd4 {1/2-1/2 (39) Soffer,R (2489)-Bar,R (2449) Israel 2011}) 14... Nbc6 $11 15. Nc3 Na5 $1 {[%CAl Ra5b3]} 16. Qb4 {aiming for Nd5.} Nec6 17. Qa4 (17. Qb2 $11) 17... a6 $15 18. Bxc6 Nxc4 19. Bxb7 $2 (19. Nd1 $15 bxc6 20. O-O) 19... Nxe3 $19 20. Bxa8 {And now Bc6 would win.} Qxc5 21. Nd5 {[#]} (21. Qc6 $2 Nc2+ 22. Kd1 Qf2 $19) 21... Nxg2+ $2 ({Better is} 21... Nc2+ $1 $19 22. Kd2 Qf2+ 23. Kc3 Bxd5 24. exd5 Rxa8) 22. Kf1 $11 Nf4 {Threatens to win with ...Nh3.} 23. Qc6 $1 {[%CAl Rc6c5]} ({But not} 23. Qxa6 $2 Bxd5 24. Bxd5 Qc3 $19) 23... Qa5 ( 23... Qd4 $11 {remains equal.} 24. Qc3 Bh3+ 25. Ke1 Ng2+ 26. Kf1 Nf4+ 27. Ke1 Ng2+ 28. Kf1 Nf4+) 24. Rd1 $2 {[%mdl 8192]} (24. Ra2 $16 Rd8 25. Rc2 Qxa3 26. Kf2) 24... Bxd5 $1 $19 25. exd5 Qxa3 26. d6 Qb2 {( -> ...Qg2+)} 27. Qe4 { Black must now prevent Rg1.} Qg2+ {[%mdl 64] [#] Double Attack} 28. Ke1 { Rf1 is the strong threat.} Qxh1+ 29. Kd2 Qxh2+ 30. Kc3 Ne2+ 31. Kc4 Nd4 32. d7 Qa2+ 33. Kc5 Qa3+ 34. Kb6 Qb3+ {Av CentiPawn Loss W=-178/B=-54. Weighted=-169/ -52} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "4.4"] [White "Swiercz, Dariusz"] [Black "Robson, Ray"] [Result "0-1"] [ECO "E94"] [WhiteElo "2649"] [BlackElo "2673"] [Annotator "TA"] [PlyCount "84"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,84,39,33,19,29,0,0,0,0,-16,0,-26,-14,-29,-14,0,0,-65,0,-14,-17,-71, -69,-72,-64,-62,-67,-56,-58,-78,-46,-63,-55,-70,0,0,0,-44,-3,-10,0,-2,-4,-5,-5, -4,-4,-76,-80,-29956,-29957,-12851,-12848,-5410,-3735,-29975,-29976,-29975, -29977,-29977,-29978,-29978,-29979,-29977,-29974]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. O-O exd4 8. Nxd4 Re8 9. f3 c6 10. Kh1 Nbd7 11. Bg5 Qb6 12. Nb3 {E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves.} a5 13. Na4 Qb4 14. Nc1 {The position is equal.} Nc5 15. Nxc5 Qxc5 16. Qd2 {[#]} Nd7 $146 ({Predecessor:} 16... d5 17. cxd5 cxd5 18. Nd3 Qf8 19. e5 Nd7 20. f4 Nb6 21. Bf3 Bf5 22. Rad1 Nc4 {1-0 (41) Roeder,M (2445) -Burgess,G (2335) Vienna 1990}) 17. Rb1 f5 18. Nd3 Qd4 19. Be3 (19. exf5 $11 Nc5 20. f6 Bxf6 21. Bxf6 Qxf6 22. Nxc5 dxc5 23. Bd3) 19... Qf6 (19... Qxc4 $15 20. exf5 Qxa2 21. fxg6 hxg6) 20. Nf2 Nc5 {[%CAl Rf5e4]} 21. Bf4 (21. Bd3 $11 { keeps the balance.}) 21... fxe4 $17 22. Nxe4 Nxe4 23. fxe4 Rxe4 24. Bd3 Re8 $1 25. Bh6 Qd4 {Threatens to win with ...Bxh6.} 26. Bxg7 Qxg7 27. Qf4 Be6 (27... Re5 $15) 28. Qxd6 $11 Rad8 29. Qa3 Qd4 (29... Qe5 {is interesting.} 30. Qb3 Qe3 31. Rf3 Qd2 32. Rd1 Qb4) 30. Rbd1 Bxc4 31. Bxc4+ Qxc4 32. Qxa5 Rxd1 33. Rxd1 { [%mdl 4096] Endgame [#] KQR-KQR} Qc2 $1 $36 {[%mdl 2560] Black fights for an advantage.} 34. Rf1 (34. Re1 $1 $11 {remains equal.} Rxe1+ 35. Qxe1) 34... Qxb2 $17 35. Qc7 $2 {[%mdl 8192] [#] This move loses the game for White.} (35. h3 $17) 35... Qf2 $1 {[%CAl Rf2f1][%mdl 512]} 36. Rg1 {[#]} (36. Rxf2 Re1+) 36... Re1 $1 {[%csl Gf2][%CAl Re1g1]} 37. Qd8+ {[#]} Kg7 $1 {[%csl Gf2][%CAl Re1g1]} 38. Qd7+ {[#]} Kh6 $1 {[%csl Gf2][%CAl Re1g1] Black mates.} 39. Qh3+ {[#]} Kg5 $1 {[%csl Gf2][%CAl Re1g1]} 40. Qg3+ Qxg3 41. hxg3 Rxg1+ 42. Kxg1 Kg4 {Av CentiPawn Loss W=764/B=-41. Weighted=484/-26} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "4.5"] [White "Dominguez Perez, Leinier"] [Black "Xiong, Jeffery"] [Result "0-1"] [ECO "A30"] [WhiteElo "2758"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "60"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,60,40,18,10,16,21,19,22,22,21,25,44,41,45,49,49,48,56,29,42,16,25,14, 22,0,22,8,20,-24,0,-18,0,-325,-288,-460,-445,-627,-617,-590,-582,-582,-554, -1149,-1128,-29975,-29976,-29976,-29977,-29995,-29996]} 1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Nc3 e6 7. e4 Bb4 {A31: Symmetrical English: 2 Nf3 Nf6 3 d4.} 8. Bd3 O-O 9. O-O Bxc3 {The position is equal.} 10. bxc3 d6 11. Bg5 {[#]} Ne5 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 11... Nd7 12. Be2 Qc7 13. Nd4 Nxd4 14. cxd4 b6 15. Qd3 h6 16. Bc1 e5 17. Rd1 Nf6 { 1/2-1/2 (46) Jumabayev,R (2614)-Utegaliev,A (2516) Almaty 2017}) 12. Bxf6 gxf6 13. Kh1 Bd7 14. f4 Ng6 15. Qh5 {[#] Strongly threatening Rf3.} Kh8 $1 16. Qh6 { aiming for f5.} (16. g3 {with more complications.} Bc6 17. Nd4 Qb2 18. Rfc1 Rg8 19. Qf3) 16... Qd8 17. Rad1 Qe7 18. Bc2 Rg8 19. Nd2 Rac8 20. Bb3 a5 21. a3 Rc5 22. e5 $2 {[%mdl 8192]} (22. Bc2 $11 {and White stays safe.}) 22... dxe5 23. Ne4 {[#]} (23. fxe5 {keeps fighting.} Nxe5 24. Qxf6+ Qxf6 25. Rxf6) 23... Bc6 $1 $19 {[%CAl Rc6e4]} 24. Nxc5 (24. Bc2 $142 Rxc4 25. Nd6 Bxg2+ 26. Kxg2 Rxc3 { [%mdl 64] Double Attack} 27. Kh1 Rxc2 28. f5 exf5 29. Rxf5) 24... Nxf4 25. Rxf4 Bxg2+ 26. Kg1 Qxc5+ 27. Rfd4 Rg6 28. Qe3 exd4 {Black mates.} 29. Rxd4 Qf5 { [%csl Gg2][%CAl Rf5f1]} 30. Rf4 Qb1+ {[%mdl 64] Double Attack. Av CentiPawn Loss W=-105/B=-10. Weighted=-72/-11} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "4.6"] [White "Sevian, Samuel"] [Black "Moradiabadi, Elshan"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2660"] [BlackElo "2555"] [Annotator "TA"] [PlyCount "92"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 22,92,0,-4,0,0,0,-3,0,-10,-13,-26,-42,-62,-47,-47,-51,-44,-49,-44,-42, -37,-30,-67,-77,-72,-31,-32,-19,-84,-89,-73,-81,-105,-38,-62,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Nc3 h6 10. h3 Bd7 11. b3 Kc8 {11...c5 is vanishing.} 12. Bb2 b6 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 13. Rad1 c5 14. Nd5 a5 {[%CAl Ba7a5,Ba5a4][%mdl 32]} 15. c4 a4 16. Rd2 Be6 17. Rfd1 g5 {[#]} 18. Nh2 $146 ({Predecessor:} 18. g4 Ne7 19. Kg2 Kb7 20. Kg3 axb3 21. axb3 Ng6 22. Ne3 b5 23. Ne1 h5 24. Nd3 { 1/2-1/2 (43) Manduch,M (2401)-Almiron,L (2575) ICCF email 2014}) 18... Kb7 19. Ng4 axb3 20. axb3 h5 21. Ngf6 Bh6 22. Nxh5 g4 $1 23. hxg4 Bxd2 (23... Nd4 { feels hotter.} 24. f3 Bxd2 25. Bxd4 Ra2 26. Be3 c6) 24. gxf5 Bxd5 $1 25. cxd5 ( 25. Ng3 $1 $11) 25... Rxh5 $17 26. Rxd2 Rxf5 {[%mdl 4096] Endgame KRR-KRB} 27. f3 Re8 (27... Rf4 $17 28. Bc3 c4) 28. Kf2 $15 Rfxe5 ({Black should play} 28... Rh5 $15) 29. Bxe5 $11 {The position is equal.} Rxe5 $15 {KR-KR} 30. f4 Re4 31. Kf3 Rb4 32. Rd3 Kc8 33. Kg4 Kd7 34. Kf5 Kd6 35. g4 Rd4 36. Rxd4 cxd4 $11 {KP-KP } 37. Ke4 d3 38. Kxd3 Kxd5 {K3P-K3P} 39. g5 c5 40. f5 b5 41. g6 fxg6 42. fxg6 { [#] aiming for g7.} Ke6 43. Ke4 c4 {And now ...c3 would win.} 44. bxc4 bxc4 45. Kd4 Kf6 46. Kxc4 Kxg6 {Av CentiPawn Loss W=-4/B=-4. Weighted=-5/-4} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "5.1"] [White "Moradiabadi, Elshan"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "E12"] [WhiteElo "2555"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "54"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,54,0,57,57,50,50,74,66,107,93,91,95,102,95,113,85,93,58,49,43,40,10, 21,22,27,14,18,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. Bf4 Bb7 5. e3 Bb4+ 6. Nfd2 O-O 7. a3 Be7 8. Nc3 c5 ({Black should try} 8... Re8 $11) 9. d5 $1 $14 {[%CAl Rd5d6] E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7 .} d6 10. e4 exd5 $5 {[%mdl 4] A promising side line.} 11. cxd5 {White is better.} ({Much weaker is} 11. Nxd5 Nxd5 12. cxd5 f5 $11) 11... Ba6 $5 {[%mdl 4] [#] A promising side line.} 12. Bc4 $146 ({ Predecessor:} 12. Be2 Bxe2 13. Qxe2 a6 14. a4 Nbd7 15. O-O Re8 16. Nc4 Qc7 17. Rfd1 Bf8 18. g4 {1-0 (42) Alexandria,N (2275)-Markovic,G Smederevska Palanka 1985}) 12... Ne8 13. O-O Bf6 14. Re1 Bb7 15. Nf3 Nd7 16. Bb5 a6 17. Bxd7 Qxd7 18. e5 dxe5 19. Nxe5 Bxe5 20. Bxe5 Nd6 {The position is equal.} 21. Qh5 { White wants to play Bxg7!} Rae8 22. Bxg7 Kxg7 23. Qg5+ Kh8 {[#] aiming for ... f6.} 24. Qf6+ Kg8 {...Qd8 is the strong threat.} 25. Qg5+ Kh8 {Strongly threatening ...f6.} 26. Qf6+ Kg8 {Hoping for ...Qd8.} 27. Qg5+ Kh8 {Av CentiPawn Loss W=-8/B=-5. Weighted=-8/-6} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "5.2"] [White "Xiong, Jeffery"] [Black "Sevian, Samuel"] [Result "1/2-1/2"] [ECO "A20"] [WhiteElo "2709"] [BlackElo "2660"] [Annotator "TA"] [PlyCount "71"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,71,6,9,6,15,14,20,13,24,19,24,24,24,24,25,18,21,18,18,20,20,30,19,25, 44,39,47,39,40,39,59,41,62,39,33,50,51,0,0,0,7,0,0,0,20,20,14,10,14,0,0,5,5,2, 7,0,8,0,25,5,147,6,0,0]} 1. c4 e5 2. g3 c6 3. d4 e4 4. Nc3 d5 5. Bg2 Nf6 6. Bg5 {A20: English Opening: 1...e5.} Bb4 $1 {The main line 6...Bb4 scores better than 6...Nbd7.} 7. Bxf6 Qxf6 8. e3 {[#]} Nd7 $146 ({Predecessor:} 8... Bxc3+ 9. bxc3 Qe7 10. cxd5 cxd5 11. Ne2 Be6 12. O-O Nd7 13. c4 dxc4 14. Bxe4 Nf6 { 1/2-1/2 (39) So,W (2760)-Giri,A (2776) Bucharest 2019}) 9. Nge2 Nb6 10. cxd5 cxd5 11. Qb3 Qd6 12. O-O {aiming for Nb5.} Bd7 13. a3 Bxc3 14. Nxc3 O-O 15. Rfc1 Rfc8 16. Bf1 Rc7 17. Qb4 Qf8 18. Qa5 Qd6 19. Na2 h5 20. Rc5 Rcc8 21. Rac1 h4 22. Rxc8+ Bxc8 23. Nb4 ({Much worse is} 23. gxh4 Qg6+ 24. Kh1 Bg4 $11) (23. Qc5 $14 Qxc5 24. dxc5) 23... hxg3 $11 24. hxg3 Be6 25. Qc5 Qf8 26. Na2 Rc8 27. Qa5 Rxc1 28. Nxc1 Qb8 29. Na2 Nd7 30. Nc3 Nf6 31. Qc5 a6 32. Be2 g6 33. a4 Nd7 34. Qe7 Qf8 (34... Qc7 $11 {remains equal.}) 35. Qxf8+ (35. Nxd5 $1 $16 { Threatening Qg5.} Qxe7 36. Nxe7+ Kf8 37. Nc8) 35... Kxf8 36. Kf1 {Av CentiPawn Loss W=-9/B=-10. Weighted=-14/-10} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "5.3"] [White "Robson, Ray"] [Black "Dominguez Perez, Leinier"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2673"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "109"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,109,17,16,12,14,14,13,21,11,16,11,17,10,12,8,4,0,0,0,0,0,4,8,9,0,0,0, 0,0,0,0,0,0,6,1,1,1,1,1,1,1,8,8,13,8,8,8,8,1,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 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 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Bf6 10. Re1 {The position is equal.} Re8 $1 {10...Re8 scores better than 10...Nf5. C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 11. c3 Rxe1 12. Qxe1 c6 (12... Ne8 13. Bf4 d5 14. Bd3 g6 15. Nd2 Ng7 16. h3 Bf5 17. Bxf5 Nxf5 18. Qe2 Qd7 19. Re1 Ng7 20. Nf3 Re8 21. Be5 Bd8 22. Qd2 f6 23. Bg3 c6 24. Rxe8+ Qxe8 25. Ne1 Nf5 26. Nd3 Kf7 27. Kf1 {1/2-1/2 (45) Robson,R (2673)-Dominguez Perez,L (2758) chess.com INT 2020}) 13. Bf4 Ne8 14. Nd2 d5 15. Bd3 g6 16. h3 Ng7 17. Nf3 Bf5 18. Bxf5 Nxf5 19. Qd2 Qd7 20. Re1 Re8 {[#]} 21. Rxe8+ $146 ({Predecessor:} 21. Ne5 Qc8 22. Nd3 {1/2-1/2 (22) Wojcik,W (2297)-Probola,R (2364) ICCF email 2019} ) 21... Qxe8 22. Qe1 Qxe1+ 23. Nxe1 $11 {[%mdl 4096] Endgame KBN-KBN} Ng7 24. Nd3 Ne6 25. Bd6 h5 26. g4 hxg4 27. hxg4 g5 28. f3 Kh7 29. Kf2 Kg6 30. Ke3 Bg7 31. a4 f5 32. b4 f4+ 33. Kf2 a6 34. b5 axb5 35. axb5 Kf7 36. bxc6 bxc6 37. Nc5 Nxc5 38. Bxc5 {KB-KB} Bf6 39. Ke2 Ke6 40. Kd3 Kd7 41. Kc2 Bd8 42. Kb3 Ba5 43. Bf8 Bd8 44. Kb4 Bb6 45. Bc5 Bd8 46. Ka4 Bc7 47. Bf8 Bd8 48. Kb4 Bb6 49. Bg7 Bd8 50. Be5 Be7+ 51. Ka5 Bd8+ 52. Ka6 Be7 53. Ka5 Kc8 54. Kb6 Kd7 55. Ka5 {An uneventful encounter. Av CentiPawn Loss W=-1/B=0. Weighted=-1/0} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "5.4"] [White "So, Wesley"] [Black "Swiercz, Dariusz"] [Result "1-0"] [ECO "D85"] [WhiteElo "2770"] [BlackElo "2649"] [Annotator "TA"] [PlyCount "69"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 20,69,43,43,43,0,16,16,2,7,56,47,99,95,143,139,156,135,305,293,345,255, 439,452,464,436,455,465,368,0,322,0,357,352,653,729,797,795,1083,1118,1248, 1249,1159,1149,1270,1256,1422,1362,29962,29962,29987,29988]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 c5 8. Rc1 O-O 9. Nf3 Qa5 10. Qd2 Bg4 11. d5 b5 {[#] D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} 12. Bd3 $1 $146 {[%mdl 8] A relevant novelty.} ({ Predecessor:} 12. Bxc5 Rc8 13. Bb4 Qc7 14. Nd4 a5 15. Ba3 b4 16. Bb2 Qb6 17. Bb5 e5 18. dxe6 Bxe6 19. Nxe6 fxe6 {1/2-1/2 (37) Vidit,S (2726)-Nepomniachtchi, I (2784) chess.com INT 2020}) 12... Nd7 13. c4 b4 {aiming for ...Bxf3.The position is equal.} 14. O-O Qc7 15. Ne1 {f3 is the strong threat.} Nb6 { White leaves nothing to chance now.} (15... f5 $1 $14 16. exf5 Bxf5) 16. f4 $16 Bd7 17. f5 Na4 18. Nf3 Nc3 $2 (18... Qb6 $16 19. Bh6 Bxh6 20. Qxh6 Qf6) 19. Bh6 $18 a5 {[#]} 20. e5 $1 {[%mdl 512]} Bxe5 $2 (20... Bxf5 {was worth a try.} 21. Bxf5 Ne2+ 22. Kh1 (22. Qxe2 Bxh6 23. Be4 Bxc1 $18) 22... Nxc1) 21. Nxe5 Qxe5 22. Rce1 Qd4+ 23. Be3 Qg7 24. Bh6 Qd4+ 25. Be3 Qg7 $1 26. Bxc5 Rfc8 $2 (26... Rfe8 27. Rxe7 Rxe7) 27. Bxe7 Qd4+ 28. Kh1 {Strongly threatening fxg6.} Bxf5 29. Rxf5 gxf5 30. Qg5+ {[%mdl 64] [#] Double Attack} Qg7 31. Qxf5 Re8 32. d6 Rad8 33. c5 a4 34. Re3 Ne2 35. Bxe2 {Av CentiPawn Loss W=-7/B=-133. Weighted=-17/ -128} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "5.5"] [White "Lenderman, Aleksandr"] [Black "Shankland, Sam"] [Result "0-1"] [ECO "E60"] [WhiteElo "2634"] [BlackElo "2691"] [Annotator "TA"] [PlyCount "90"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,90,23,-2,50,37,56,45,64,60,59,36,45,36,56,-10,0,-37,-30,-33,-17,-13, -10,-19,-23,-56,0,0,0,-218,-212,-218,-214,-208,-209,-209,-211,-207,-216,-206, -195,-189,-182,-176,-181,-212,-204,-229,-212,-210,-208,-264,-261,-286,-300, -310,-313,-331,-264,-381,-295,-277,-216,-202,-146,-212,-211,-387,-360,-440, -425,-29978,-12819,-29995,-29992,-29992,-29993]} 1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. e3 O-O 5. Be2 d6 6. O-O Nbd7 7. Nc3 e5 8. Qc2 Re8 9. b4 e4 {E61: King's Indian: Early deviations for White, including Smyslov System.} (9... a5 $11) 10. Nd2 $14 {[%CAl Rc3e4]} Qe7 11. Bb2 Nf8 {White is slightly better.} 12. Rfc1 Bf5 13. Qd1 h5 {[#]} 14. Nb3 $146 ({Predecessor:} 14. a4 N8h7 15. d5 Ng4 16. Ra2 Qh4 17. Bxg4 hxg4 18. c5 Be5 19. Kf1 Qxh2 20. Nb5 {0-1 (27) Steiner,B (2112)-Kostolansky,S (2209) Tatranske Zruby 2018}) 14... N8h7 15. d5 ({Better is} 15. b5 $14) 15... Ng4 $11 16. h3 Ne5 17. Nd4 Qh4 18. Nxf5 gxf5 19. Rc2 Ng5 {With the idea ...Nef3+!} 20. Qf1 $1 f4 (20... a6 $15) 21. exf4 Qxf4 22. Kh1 $2 {[#] White is now going downhill.} (22. Bxh5 Nd3 $17) (22. Nb5 $11 {and White stays safe.} Re7 23. Kh1 (23. Bxh5 e3 $15)) 22... Nef3 $1 $19 {[%csl Gf3][%CAl Rf4h2][%mdl 512]} 23. g3 (23. gxf3 exf3) 23... Qf5 24. h4 Nd4 25. Rd2 Ngf3 26. Bxf3 Nxf3 (26... Qxf3+ 27. Qg2 $17) 27. Re2 Bxc3 28. Bxc3 Qg4 29. Bf6 Kh7 30. Re3 Rg8 31. c5 Rg6 32. Bg5 {[#]} Re8 $1 (32... Nxg5 33. hxg5 Rxg5 34. Kg2 $17) 33. cxd6 Rxd6 ({Weaker is} 33... Nxg5 34. hxg5 Rxd6 35. Qb5 $11) ({Resist} 33... cxd6 34. Rc1 $17) 34. Rc1 Rxd5 (34... Nxg5 35. hxg5 Rxd5 36. Qg2 $17) 35. Kg2 c6 ({Not} 35... Nxg5 36. hxg5 Re7 37. Qe2 $19) 36. Qc4 Qf5 37. Bf4 (37. a4 $142) 37... a6 38. Rh1 Kg8 39. a4 Rd4 40. Qc3 (40. Qc5 $17 Rd5 41. Qc1) 40... Red8 41. Bh6 $2 (41. Qc5 {was the only chance.} R8d5 42. Qe7) 41... Kh7 42. Bf4 Rd1 43. Rxf3 (43. Rxd1 $19 Rxd1 44. Rxf3 exf3+ 45. Qxf3) 43... Rxh1 {[%csl Gh1] [%CAl Rf5h3]} 44. g4 exf3+ 45. Qxf3 hxg4 {Av CentiPawn Loss W=-84/B=-42. Weighted=-90/-26} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "5.6"] [White "Ramirez, Alejandro"] [Black "Liang, Awonder"] [Result "0-1"] [ECO "B10"] [WhiteElo "2567"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "112"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 23,112,0,0,0,0,-4,-5,-27,-26,-24,-29,-63,-68,-90,-63,-68,-12,-19,-26, -103,-110,-98,-100,-95,-89,-101,-91,-94,-83,-92,-66,-76,0,-66,0,-21,0,0,12,26, 33,0,0,-122,-110,-108,0,0,0,-136,-131,-120,-129,-213,-197,-175,0,0,120,-538, 1808,-200,-208,-315,-313,-614,-626,-596,-370,-341,-283,-268,-262,-2634,-2854, -3256,-3197,-2936,-2716,-2923,-2878,-2653,-2420,-2420,-1685,-2233,-2233,-2036, -2088,-29981,-29982]} 1. e4 c6 2. Nf3 d5 3. d3 Qc7 4. g3 Nf6 5. Qe2 dxe4 6. dxe4 e5 7. Bg2 Be7 8. O-O O-O 9. b3 Bg4 10. Nbd2 Nbd7 11. Bb2 Rfe8 12. h3 Bh5 13. a4 {A07: Réti Opening: New York and Capablanca Systems.} a5 14. Nc4 Bc5 { [#]} 15. Kh1 $146 {[#]The position is equal.} ({Predecessor:} 15. Rfe1 Bd4 16. c3 Bc5 17. Qc2 b5 18. Ne3 Nb6 19. c4 bxa4 20. bxa4 Bb4 21. Red1 {0-1 (62) Kuzub,P (1964)-Mingazov,A (2303) Moscow 2017}) 15... Bd4 $1 {[%mdl 512]} 16. c3 (16. Bxd4 exd4) 16... Bc5 17. Rad1 Bf8 18. Qe3 Nc5 19. Ba3 $1 {[%CAl Ra3c5]} b6 (19... Nfxe4 20. g4 $11) (19... Ncxe4 $15 20. Bxf8 Rxf8) 20. g4 $11 Bg6 21. Nh4 (21. Nfxe5 $1 $11 Bxe4 22. Bxe4 Nfxe4 23. b4 axb4 24. cxb4) 21... Bxe4 $17 22. Bxe4 Nfxe4 23. Nf5 Nf6 24. Ncd6 Re6 {[%CAl Rf8d6]} 25. Bxc5 bxc5 26. Ne4 Nd5 27. Qg3 g6 ({Black should try} 27... Nf4 $17) 28. Rd2 (28. Qh4 $11) 28... Kh8 ( 28... Nf6 $15 29. Nxf6+ Rxf6) 29. Rg1 f6 30. Ne3 Nf4 31. Rgd1 Qf7 32. g5 { [%mdl 1024] White has compensation.} f5 33. Nf6 (33. Rd7 $11 {was the only way to keep the balance.} Re7 {[%mdl 64] Discovered Attack} 34. Nf6 (34. Nxc5 Rxd7 35. Nxd7 Qxb3 $17)) 33... Be7 $1 $36 {[%mdl 2048] Black is on the roll.} 34. Rd7 {Black should prevent Nc4.} Ne2 (34... Nh5 $17 35. Nxh5 gxh5) 35. Qh4 $11 Nxc3 36. R1d3 (36. R1d2 $11 {keeps the balance.}) 36... Ne2 $1 $17 37. Nc4 { And now Re3 would win.} Nd4 $1 38. Rb7 (38. Re3 $17 {was necessary.} e4 39. f4) 38... e4 $1 $19 {[%CAl Re4d3]} 39. Rd1 Qg7 $2 (39... Nf3 $19 40. Qh6 Nxg5 $1 { [%mdl 512]}) 40. Qf4 $11 Rf8 (40... Rd8 $11) 41. Ne5 $2 {[%mdl 8192]} (41. Nd7 $1 $16 {[%CAl Rd7f8]} Rd8 42. Nxc5 $1 {[%mdl 512]} Bxc5 43. Rxg7 Kxg7 44. Qc7+ (44. Nxa5 Bb6 $14) 44... Be7 45. Rd2 (45. Nxa5 Nb5 $16) (45. Qxa5 c5 $16)) 41... Rd6 $4 {[%mdl 8192] [#]} (41... Rxe5 42. Qxe5 Bxf6 43. gxf6 $18) (41... Bxf6 $19 42. Rxg7 Bxe5) 42. Nc4 $4 {[%mdl 8192]} (42. Rxe7 $1 $18 {[%mdl 512] was the only winning move. Threatening mate with Nxg6+!} Rfxf6 (42... Qxe7 43. Nxg6+) 43. Rxg7 Kxg7 44. gxf6+ Rxf6 45. Qc1) 42... Rdd8 $19 43. Nd7 {[#]} (43. Rf1 {was worth a try.}) 43... Bxg5 $1 {[%mdl 512]} 44. Qd6 $2 (44. Qe5 Bf6 45. Nxf6 Qxb7 46. Nd7+ Kg8 47. Nxf8 Qxb3 48. Ne3 Rxf8 49. Qxc5) (44. Qxg5 Rxd7) 44... Rfe8 45. Qxc5 Nf3 ({Not} 45... Rxd7 46. Rxd7 Qxd7 47. Rxd4 $17) 46. Kg2 Nh4+ 47. Kf1 Re7 48. Qxc6 $2 {[#]} (48. Qb6 Ree8 49. Qd4 Qxd4 50. Rxd4) 48... Qc3 $1 49. Nce5 Qxh3+ 50. Ke2 Ng2 {( -> ...Rxe5!)} 51. Qc7 Nf4+ 52. Ke1 Qh1+ 53. Kd2 Ne6+ 54. Kc2 {[#]} Qxd1+ $1 {[%mdl 512]} 55. Kxd1 Nxc7 56. Rxc7 Rxe5 { Av CentiPawn Loss W=-101/B=-68. Weighted=-148/-81} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "6.1"] [White "Nakamura, Hikaru"] [Black "Liang, Awonder"] [Result "0-1"] [ECO "B18"] [WhiteElo "2736"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "113"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,113,0,3,6,2,5,5,10,-10,-9,-15,0,-26,-12,-57,-35,-97,-81,-83,-66,-207, -210,-196,-189,-226,-235,-231,-222,-211,-180,-170,-167,-218,-212,-271,-132, -137,-137,-175,-166,-309,-311,-298,-281,-315,-284,-359,-340,-340,-297,-260, -249,-310,-335,-326,-325,-298,-302,-291,-307,-327,-308,-496,-489,-536,-541, -525,-526,-484,-384,-377,-375,-347,-368,-366,-372,-381,-339,-530,-566,-574, -567,-558,-564,-515,-468,-564,-580,-573,-570,-554,-483,-641,-573,-576,-552, -870,-848,-743]} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 e6 8. Bd3 Bxd3 9. Qxd3 Nf6 {B19: Classical Caro-Kann: 4...Bf5 main line. } 10. Bf4 {is the legacy move (10.Bd2).} Qa5+ 11. c3 Be7 {[#] The position is equal.} 12. Nf1 $146 ({Predecessor:} 12. O-O Nbd7 13. c4 O-O 14. a3 Rfd8 15. Rfc1 Rac8 16. b3 Qa6 17. Qe2 c5 18. Rd1 cxd4 19. Nxd4 {1/2-1/2 (24) Hjorth,J (1936)-Hughes,G (2112) ICCF email 2017}) 12... c5 13. N1d2 Qa6 14. Nc4 O-O 15. g4 Nd5 16. Be5 ({Better is} 16. Bxb8 $15 Raxb8 17. Nce5) 16... Nc6 17. g5 { [#] Strongly threatening gxh6.} h5 18. g6 {This costs White the game.} ({ White should play} 18. dxc5 $15 Bxc5 19. Bg3) 18... cxd4 $19 19. Nxd4 Nxd4 20. Qxd4 Rac8 21. Ne3 {[#]} Bc5 $1 {[%CAl Rc5d4]} ({Don't do} 21... fxg6 22. Nxd5 Bc5 23. Nb4) 22. Qe4 Bxe3 23. fxe3 fxg6 24. Bd4 (24. Qxg6 $142 Rf7 25. Bd4) 24... Rf5 $40 {[%mdl 128] White is in trouble.} 25. a3 Rcf8 (25... Ne7 $19 { and Black stays clearly on top. White must now prevent ...e5!} 26. Qc2 e5) 26. O-O-O $17 Kh7 27. Rhg1 Nf6 28. Qc2 (28. Qd3 $142) 28... Ng4 $19 29. e4 Rf1 30. c4 R1f3 {And now ...e5 would win.} 31. e5 Rc8 32. c5 Rcf8 33. Kb1 Rf1 34. Ka2 Rxd1 35. Rxd1 Rd8 36. Rd2 Qc6 37. b4 Rd5 38. Bc3 Ne3 ({Much less strong is} 38... Nxe5 39. Qd1 $19) 39. Qc1 $2 (39. Qb3) 39... Nf5 40. Qe1 Rxd2+ 41. Bxd2 Qd5+ 42. Kb2 Qd3 43. Bg5 Nd4 {( -> ...Qb3+)} 44. Qc3 Qe2+ 45. Kb1 Qxe5 46. a4 a6 47. Kb2 (47. Qc4 $142) 47... Qe2+ {Black is clearly winning.} 48. Qd2 { Threatening Qxe2.} Qe4 49. Qc3 e5 50. Qc4 Qg2+ 51. Kb1 Qc6 52. a5 Nb5 {...Na3+ is the strong threat.} 53. Kc1 Qh1+ 54. Kd2 Nd4 55. Qd3 Qg2+ 56. Kc3 Qa2 57. Qd1 {Av CentiPawn Loss W=-31/B=-14. Weighted=-29/-11} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "6.2"] [White "Shankland, Sam"] [Black "Ramirez, Alejandro"] [Result "1-0"] [ECO "D12"] [WhiteElo "2691"] [BlackElo "2567"] [Annotator "TA"] [PlyCount "117"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,117,33,9,28,21,31,22,28,18,13,12,22,30,48,40,41,43,33,27,37,35,43,51, 52,49,66,61,61,37,55,21,25,16,17,17,26,6,10,0,11,5,10,9,11,0,0,12,29,14,18,18, 49,24,49,10,27,29,24,36,33,16,306,306,280,303,293,196,206,205,227,216,216,57, 67,0,225,197,193,178,177,42,44,38,264,180,261,261,395,406,425,414,482,508,532, 523,513,496,487,493,631,626,697,581,735,644,829,579,828,802]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 a6 6. Qb3 Ra7 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4.} 7. Nh4 Bc8 8. cxd5 $5 {[%mdl 4] Exploring less charted territory.} cxd5 {The position is equal.} 9. Bd3 e6 10. Nf3 Nc6 {[#]} 11. O-O $146 ({Predecessor:} 11. a3 b5 12. O-O Bd6 13. Bd2 O-O 14. Rfc1 Na5 15. Qa2 Nc4 16. Be1 Rc7 17. Nd1 {1-0 (54) Bericat,A-Garcia Martinez,O ICCF email 2004}) 11... Bd6 12. e4 $36 {[%mdl 2048] Black is under pressure.} dxe4 13. Nxe4 Nd5 14. Bg5 Be7 15. Bxe7 Ncxe7 16. Qa4+ Bd7 17. Nd6+ Kf8 18. Qa3 f6 19. Rfe1 g6 20. Ne4 b6 21. Bc4 {[#] Bxd5 is the strong threat.} ({Not} 21. Bxa6 $2 Bc8 $19) 21... Kg7 22. Nc3 {Threatens to win with Bxd5.} Bc8 23. Qb3 Qd6 24. Rac1 {[%CAl Ba1c1,Bc1c3,Bc3e3,Be3e6][%mdl 32]} Rd8 25. Bxd5 exd5 26. Na4 Rb7 27. Rc3 a5 28. h3 Bf5 29. Rce3 {Black must now prevent Nc5!} Rdd7 30. Nc3 { [%CAl Ba4c3,Bc3e2,Be2g3][%mdl 32]} g5 31. a3 h6 32. Ne2 Rdc7 33. Ng3 Bg6 34. Re6 Qd8 $1 35. Rxb6 Bc2 $2 {[%mdl 8192]} (35... a4 $11 36. Qb5 Rxb6 37. Qxb6 Qd7) 36. Qb5 $18 Bd3 37. Qxa5 Rc8 38. Ra6 Qxa5 39. Rxa5 Kf7 40. b4 Rc3 41. Ne2 $2 ({White should play} 41. Re3 $18) 41... Rc2 $14 42. Ng3 $2 (42. Nc1 $1 $14 Bc4 43. Rd1) 42... Rc3 $1 $18 43. Kh2 Rc2 44. Re3 Bc4 45. Kg1 ({Better is} 45. a4 $18) 45... Rc1+ $14 46. Re1 Rc3 $2 (46... Rxe1+ $14 47. Nxe1 Nc6 {[%mdl 64] Double Attack}) 47. Ra1 Nc6 (47... Bd3 {keeps fighting.} 48. Re1 Ng6 49. Rxd5 Rxa3) 48. Rc5 $18 Nd8 (48... Ne7 $142 49. Nd2 Rc2) 49. Nf5 Kg6 50. Ne3 Rd7 51. b5 {White is clearly winning.} Nb7 52. Rc6 {[#] Strongly threatening Ne5+.} Kf7 53. a4 Na5 54. Rc8 Nb3 55. Re1 Na5 56. h4 Ra3 57. b6 Rxa4 58. Rc7 Bb5 59. Nxd5 {Av CentiPawn Loss W=-19/B=-39. Weighted=-20/-40} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "6.3"] [White "Swiercz, Dariusz"] [Black "Lenderman, Aleksandr"] [Result "1-0"] [ECO "A40"] [WhiteElo "2649"] [BlackElo "2634"] [Annotator "TA"] [PlyCount "141"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,141,23,27,14,13,-1,14,8,7,3,20,12,22,18,13,9,45,16,35,42,28,28,34,34, 46,46,45,45,45,52,52,52,68,55,68,59,68,44,44,43,44,44,52,52,52,0,0,7,43,33,33, 33,34,25,124,33,35,35,57,59,62,62,90,91,117,123,210,198,192,191,270,269,300, 308,322,304,439,439,439,412,395,377,9275,7692,2500,755,741,741,714,679,640,459, 660,587,567,593,580,289,320,267,277,0,0,0,0,0,23,0,285,278,29970,29971,29971, 29971,29969,0,29976,29977,29977,29979,29979,29980,29980,29981,29981,29982, 29982,29981,29981,29982]} 1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 d5 5. O-O Bd6 6. c4 O-O {is more profitable than 6...c6 at the moment.} 7. b3 b6 8. cxd5 { A90: Dutch Defence: Miscellaneous and Modern Stonewall (with ...Bd6).} exd5 9. Ba3 Bb7 10. Bxd6 {The position is equal.} Qxd6 11. Nc3 a6 {[#]} 12. Qc1 $146 ({ Predecessor:} 12. Ne5 Nbd7 13. Nxd7 Qxd7 14. Rc1 Rae8 15. e3 Re7 16. Ne2 g5 17. Rc2 a5 18. Nc3 {1/2-1/2 (51) Nguyen,D (2406)-Kostenko,P (2429) Lichess.org INT 2020}) 12... Ne4 13. e3 Nd7 14. Qb2 Rae8 15. Rac1 Re7 16. b4 b5 17. a4 c6 18. a5 h6 19. Rc2 g5 20. Ne2 {[%CAl Bc3e2,Be2c1,Bc1d3,Bd3e5][%mdl 32]} Qf6 21. Nc1 Nd6 22. Nd3 Nc4 23. Qc3 Qg7 24. Re1 Bc8 25. Nfe5 Ndxe5 26. Nxe5 Bd7 {[%CAl Rc4e5]} 27. f4 (27. Nxc4 bxc4 28. Rce2 Be6 $15) 27... Be8 28. Rf2 g4 29. h4 gxh3 $1 30. Bxh3 Kh8 31. Kh2 Qf6 32. Rg2 Rg7 33. Reg1 Nd6 (33... Rfg8 $11 { remains equal.}) 34. Qe1 (34. g4 $16) 34... h5 $1 $14 35. Rc2 Ne4 36. Bf1 $1 Rfg8 {...Rxg3 is the strong threat.} 37. Rcg2 Rh7 38. Bd3 Qe7 39. Bxe4 fxe4 ( 39... dxe4 $16 40. Kh1 Qd6) 40. Rh1 $18 Bd7 41. Kg1 Bg4 (41... Rgg7 $142 42. Rh4 Qf8) 42. Rh4 (42. Nxc6 Qe6 $11) 42... Bf3 43. Rgh2 Qe8 44. Kf2 Rgg7 (44... Rg4 {might work better.} 45. Nxg4 Bxg4) 45. Nxf3 exf3 46. Qh1 {[%CAl Rh4h5]} Qg6 47. Qxf3 Qd6 $2 (47... Qc2+ 48. Qe2 Qg6) 48. Rxh5 Qxb4 49. Rxh7+ (49. Qh1 $142 Qd2+ 50. Kf3 $1 {[%mdl 512]}) 49... Rxh7 50. Rxh7+ Kxh7 {[%mdl 4096] Endgame KQ-KQ} 51. Qh5+ Kg7 52. Qe5+ Kg8 (52... Kf8 $142 53. Qf6+ Kg8 54. Qe6+ (54. Qxc6 Qd2+ 55. Kf1 Qd1+ 56. Kf2 Qd2+ {[%mdl 64] Double Attack} 57. Kf1 Qd3+ 58. Kg1 Qxe3+ 59. Kh2 Qe2+ 60. Kh3 Qh5+ 61. Kg2 Qe2+ 62. Kh1 Qe4+ 63. Kh2 Qe2+ 64. Kh3 Qh5+ 65. Kg2 Qe2+ 66. Kg1 Qe1+ 67. Kh2 Qe2+ $11) 54... Kg7) 53. Qb8+ Kf7 54. Qc7+ Kf8 55. Kf3 (55. f5 $142) 55... Qb1 56. Qd6+ $1 (56. Qxc6 Qd1+ 57. Kf2 Qd2+ 58. Kg1 Qd1+ 59. Kh2 Qe2+ 60. Kh3 Qh5+ 61. Kg2 Qe2+ 62. Kg1 Qe1+ 63. Kh2 Qe2+ 64. Kg1 (64. Kh3 Qh5+ 65. Kg2 Qe2+ {[%mdl 64] Double Attack} 66. Kh3 $11) 64... Qe1+ 65. Kh2 Qe2+ $11) 56... Kf7 57. Qd7+ $2 (57. Qxc6 Qd1+ 58. Kg2 Qe2+ 59. Kh1 Qh5+ 60. Kg1 Qd1+ 61. Kh2 Qh5+ 62. Kg2 Qe2+ 63. Kh3 Qh5+ 64. Kg2 Qe2+ $11) (57. Kg4 $1 $18 Qg6+ 58. Qxg6+ Kxg6 59. Kf3) 57... Kf8 $11 58. Qc8+ Kf7 59. Qc7+ Kf8 60. Qd6+ $2 {[%mdl 8192]} (60. Qe5 $11 Qd1+ 61. Kg2) 60... Kf7 $18 {[#]} 61. Kg4 $1 (61. Qxc6 Qd1+ 62. Kf2 Qd2+ 63. Kg1 Qxe3+ 64. Kh2 Qe2+ 65. Kh1 Qe4+ 66. Kh2 Qe2+ 67. Kh1 Qe4+ 68. Kh2 Qe2+ $11) 61... Qg6+ $2 (61... b4 $18 62. Qc7+ (62. Qxc6 $2 Qg6+ 63. Qxg6+ Kxg6 $19) 62... Kg8 63. Qxc6 {[%mdl 64] Double Attack} Qe4 64. Qxa6 b3) 62. Qxg6+ Kxg6 {KP-KP} 63. Kf3 Kh5 64. e4 $2 (64. g4+ {mates} Kg6 65. Ke2 Kg7 {[#]} 66. e4 $1 {[%mdl 512]} dxe4 67. Ke3 Kh7 68. Kxe4 Kg6 69. f5+ Kf6 70. d5 cxd5+ 71. Kxd5) 64... dxe4+ $2 {[%mdl 8192] } (64... b4 $11 65. exd5 b3 66. g4+ (66. dxc6 b2 $11) 66... Kh6 67. g5+ (67. dxc6 b2 $11) 67... Kg6 68. f5+ (68. dxc6 b2 $11) 68... Kxg5 69. dxc6 b2) 65. Kxe4 {White mates.} Kg4 66. f5 Kg5 {[#]} 67. g4 $1 {[%mdl 512]} Kf6 (67... Kxg4 68. f6) 68. Kf4 Kf7 69. g5 Kg7 70. Ke5 b4 71. Ke4 {Av CentiPawn Loss W=-61/ B=17. Weighted=-31/-28} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "6.4"] [White "Dominguez Perez, Leinier"] [Black "So, Wesley"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2758"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "57"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,57,16,16,20,19,13,20,16,8,12,7,10,6,6,4,7,6,11,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Bf6 10. Re1 {The position is equal.} Re8 $1 {The main line 10...Re8 scores better than 10...Nf5. C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 11. c3 Rxe1 12. Qxe1 Ne8 13. Bd3 d5 14. Bf4 g6 15. Nd2 {[%CAl Bb1d2,Bd2f3,Bf3e5][%mdl 32]} Ng7 16. Nf3 Bf5 17. Bxf5 Nxf5 18. Qe2 c6 19. Re1 Ng7 20. Be5 Bxe5 21. Nxe5 Qd6 22. Qf3 f6 23. Nd3 Re8 24. Rxe8+ Nxe8 25. Qe3 {[#]} Kf7 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 25... Ng7 26. h3 Kf7 27. Qh6 Kg8 28. Qe3 Kf7 29. Qh6 Kg8 30. Qe3 g5 {1/2-1/2 (30) Hansen,E (2612)-Bok,B (2638) Saint Louis 2019}) 26. Qh6 Kg8 27. Qe3 Kf7 28. Qh6 Kg8 29. Qe3 {Not much happened in this game. Av CentiPawn Loss W=-1/B=0. Weighted=-1/0} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "6.5"] [White "Sevian, Samuel"] [Black "Robson, Ray"] [Result "0-1"] [ECO "E73"] [WhiteElo "2660"] [BlackElo "2673"] [Annotator "TA"] [PlyCount "86"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,86,43,39,44,18,33,27,18,18,10,0,0,0,0,0,0,0,0,-23,-39,-30,-43,-20, -42,-21,-32,-77,-64,-201,-215,-295,-285,-299,-301,-288,-290,-262,-129,-128, -122,-128,-126,-176,-166,-331,-318,-693,-675,-783,-758,-725,-486,-900,-741, -741,-741,-741,-580,-741,-741,-1224,-1187,-1154,-788,-1112,29988,-29983,-29984, -2550,-85,-1288,-1290,-1295,-1283,-1135,-1143]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Be3 Nc6 7. d5 Ne5 {E73: King's Indian: Averbakh Variation without 6...c5.} 8. h3 e6 9. f4 Ned7 {White has an edge.} 10. dxe6 $1 fxe6 11. g4 b6 12. Qc2 Bb7 13. O-O-O {[#]} Nc5 $146 {[%CAl Rf6e4]} ({ Predecessor:} 13... Qc8 14. Bf3 a5 15. Nge2 Nc5 16. Rhg1 Nfd7 17. Bg2 a4 18. h4 Ra5 19. h5 Qe8 20. hxg6 hxg6 {0-1 (38) Horvath,J (2289)-Hausmann,I (2173) Naumburg 2003}) 14. Bf3 $1 Nfd7 $36 {[%mdl 2048] Black has some pressure.} 15. e5 Qe7 16. exd6 cxd6 17. Bxb7 Nxb7 18. Nge2 Rac8 19. Qd3 Ndc5 20. Qc2 (20. Bxc5 $15 Rxc5 21. Rhf1) 20... Na5 $19 21. Bd4 Nxc4 22. Kb1 d5 23. f5 Bxd4 (23... gxf5 24. gxf5 Bxd4 25. Nxd4 $19) (23... exf5 24. Nxd5 Qe4 25. Qxe4 $16) 24. Rxd4 Ne3 (24... Qf6 $19 {[%CAl Rg6f5] has better winning chances.} 25. Rf4 Ne3) 25. Qd2 $17 exf5 {aiming for ...Qe5.} 26. Nf4 {Black must now prevent Re1.} Nc4 ({But not} 26... fxg4 27. Re1 $11) 27. Qg2 Ne4 28. Ncxd5 $2 {[#]} (28. Nfxd5 Qe5 29. Rhd1) 28... Ncd2+ $1 $19 {[%mdl 512]} 29. Ka1 $2 (29. Rxd2 Nxd2+ 30. Ka1) 29... Qc5 $1 {[%CAl Rc5c1] ( -> ...Qc1+!)} 30. Ne2 {[#]} f4 $1 {[%mdl 512] ...f3 is the strong threat.} 31. b4 (31. Ndxf4 Rxf4) 31... Qc2 {Strongly threatening ...f3!} 32. Rc1 (32. Ne7+ $142 Kg7 33. Rxd2 {[%mdl 64] Remove Defender} (33. Nxc8 $2 f3 $19 {[%mdl 64] Double Attack}) 33... Qxd2 34. Qxe4) 32... Qxc1+ 33. Nxc1 Rxc1+ 34. Kb2 f3 35. Qh2 Rb1+ 36. Ka3 f2 37. Ne7+ Kf7 38. Qf4+ Ke8 $4 {[%mdl 8192] [#]} ({Not} 38... Kxe7 39. Qe5+ Kf7 40. Rd7+ Kg8 41. Qg7#) (38... Kg7 $19 39. Qe5+ Rf6) 39. Qe5 $4 {[%mdl 8192]} (39. Nf5 $1 { [%mdl 512] was the only winning move.} Rxf5 (39... gxf5 40. Qe5+) 40. gxf5 Nc4+ 41. Rxc4 Nc5 42. Qe5+ Kf8 43. Qf6+ Ke8 44. bxc5) 39... Rf3+ {[%mdl 64] Double Attack} 40. Ka4 b5+ $2 (40... Nc3+ $19 {and Black stays clearly on top.} 41. Ka3 {[#]} Nxa2+ $1 {[%mdl 512]} 42. Rd3 Rxd3+ 43. Kxa2 Ra3+ $1 {[%mdl 576] Decoy, Promotion} 44. Kxa3 Nc4+ {[%mdl 64] Double Attack} 45. Ka2 Nxe5 46. Kxb1 f1=Q+ {[%mdl 64] Double Attack} 47. Ka2 Kxe7 48. Kb2 Qd3 49. Kc1 Nc4 50. h4 Qd2+ {[%mdl 64] Double Attack} 51. Kb1 Qb2#) 41. Ka5 $2 {[%mdl 8192]} (41. Qxb5+ $17 Kf8 42. Nxg6+ Kg7 43. Qe5+ Kxg6 44. Rxe4 Nxe4 45. Qxe4+ Kg5 46. h4+ { [%mdl 64] Decoy} Kxh4 47. Qxh7+ Kxg4 48. Qg6+ Kh3 49. Qxb1) 41... Ra3+ { [%mdl 64] Double Attack. Black is clearly winning.} 42. Kxb5 f1=Q+ {[%mdl 64] Double Attack} 43. Kc6 Qf6+ {Black used his chance. Av CentiPawn Loss W=681/ B=-86. Weighted=143/-100} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.27"] [Round "6.6"] [White "Moradiabadi, Elshan"] [Black "Xiong, Jeffery"] [Result "0-1"] [ECO "A48"] [WhiteElo "2555"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "106"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,106,-3,-4,10,-4,-4,-16,-17,-10,0,8,6,14,8,0,0,0,0,0,0,0,0,-11,0,0,35, 18,7,0,0,0,42,19,64,61,48,61,32,56,81,39,34,-15,-15,-15,-15,-15,-15,-11,0,-94, -102,-196,-81,-200,-162,-302,-303,-312,-327,-389,-447,-437,-440,-418,-406,-604, -573,-545,-388,-1766,-1719,-898,-404,-834,-261,-272,-268,-272,-238,-275,-306, -29994,-29995,-29995,-29996,-29996,-29997,-29997,145]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 O-O 5. c3 d6 6. e4 c5 7. dxc5 dxc5 8. Bc4 Nc6 9. O-O Qc7 10. Qe2 h6 {A48:1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} 11. Be3 b6 12. h3 Bb7 {The position is equal.} 13. Ba6 Rad8 14. Bxb7 Qxb7 {[#]} 15. a4 $146 ({ Predecessor:} 15. Bf4 Nh5 16. Bh2 e5 17. Rfd1 Nf4 18. Qf1 b5 19. a4 a6 20. axb5 axb5 21. Ne1 {0-1 (69) Lehtosaari,M (2183)-Maki,V (2339) Finland 2018}) 15... Rd7 16. Bf4 Rfd8 17. Rfe1 Ne8 18. Nc4 Nc7 19. Bxc7 Qxc7 20. e5 Rd5 21. e6 f5 $1 22. h4 Rd3 23. h5 Qf4 24. Ne3 $1 g5 25. Rad1 Rxd1 26. Rxd1 Qe4 27. Rxd8+ Nxd8 28. Nd2 Qxa4 29. Nxf5 Bf8 $1 30. Qd3 Qd1+ {[%mdl 64] Double Attack} 31. Kh2 Qxh5+ 32. Kg1 $1 Qd1+ 33. Kh2 Nxe6 {[#]} 34. Ng3 (34. Qd7 $1 $11 {[%mdl 512] keeps the balance.} Qh5+ 35. Kg1) 34... Nf4 $17 {Black continues to play with concentration.} 35. Qc4+ {[#]} (35. Qd7 $17 {keeps fighting.}) 35... e6 (35... Kg7 $1 $19 {and Black stays clearly on top.} 36. Nde4 Qd7) 36. Nde4 (36. Nge4 $17) 36... Bg7 37. b4 (37. Qb5 {is a better defense.}) 37... Qd5 $19 38. Qa6 cxb4 39. Qc8+ Kh7 40. cxb4 h5 41. Qc2 {Intending Nf6+! and mate.} Kh6 42. f3 ( 42. Kh1 $142) 42... Be5 43. Kh1 Qd3 44. Qc6 $2 (44. Qxd3 Nxd3 45. b5) 44... Qd1+ 45. Kh2 Qd8 (45... Ng6 $142 46. Qxe6 h4 {[%mdl 64] Pin}) 46. Kh1 (46. Nf5+ $142 Kg6 47. Ne3 Ne2+ 48. g3) 46... h4 $2 (46... g4 47. Kg1 gxf3) 47. Nf5+ Kg6 {Threatens to win with ...Qd1+.} 48. Ne3 Qc7 49. Qe8+ Kg7 {Strongly threatening ...Qc1+.} 50. Ng4 $2 (50. Nf1 $19) 50... Qc1+ {Black mates.} 51. Kh2 Ne2+ 52. Nxe5 Qg1+ 53. Kh3 Qh1+ $2 {[%mdl 32768] Av CentiPawn Loss W=-55/ B=-58. Weighted=-73/-55. Loss on time!?} (53... Nf4+ {mates} 54. Kg4 Qxg2+ 55. Ng3 Qxg3#) 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "7.1"] [White "Xiong, Jeffery"] [Black "Nakamura, Hikaru"] [Result "1-0"] [ECO "B08"] [WhiteElo "2709"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "66"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,66,28,38,27,27,27,59,62,54,54,58,48,47,54,62,43,60,65,80,56,67,41,73, 64,66,49,65,45,102,91,219,224,315,312,418,427,414,373,516,507,669,630,688,680, 663,693,672,700,671,697,694,693,787,782,743]} 1. e4 g6 2. d4 d6 3. Nf3 Nf6 4. Nc3 Bg7 5. Be3 c6 6. Qd2 b5 7. Bd3 Nbd7 8. h3 {B08: Pirc Defence: Classical System.} e5 9. dxe5 dxe5 10. a4 {White is slightly better.} b4 11. Ne2 a5 12. c3 c5 13. O-O O-O 14. Ng3 Bb7 15. Rfd1 Qe7 16. Rac1 Rfc8 17. cxb4 cxb4 {[#]} 18. Bc4 $1 Nf8 19. Qd6 Qxd6 20. Rxd6 Rc7 (20... N8d7 $1 $14) 21. Rb6 ({Reject} 21. Nxe5 $6 Nxe4 22. Bxf7+ Rxf7 $11) 21... Re8 {A mistake that costs the game.} (21... Bc8 $16) 22. Ng5 $18 Ba8 (22... Ree7 $142 23. Bb3 Rxc1+ 24. Bxc1 Rc7) 23. Ra6 Bb7 {Strongly threatening ...Rxc4.} 24. Rxa5 Ba8 25. Bb3 Rd7 26. Ra6 { White is clearly winning.} h6 27. Nxf7 Rxf7 28. Bxf7+ Kxf7 29. Rc7+ Kg8 30. Rca7 Bxe4 {[#]} 31. Rxf6 $1 {[%mdl 576] Remove Defender} Bxf6 32. Nxe4 Bd8 33. Ra8 Ne6 {Av CentiPawn Loss W=-4/B=-32. Weighted=-6/-32} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "7.2"] [White "Robson, Ray"] [Black "Moradiabadi, Elshan"] [Result "1-0"] [ECO "C11"] [WhiteElo "2673"] [BlackElo "2555"] [Annotator "TA"] [PlyCount "73"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,73,10,12,6,11,10,31,33,26,28,73,34,67,40,29,52,91,84,151,145,195,154, 168,164,172,169,143,149,154,157,154,158,167,157,164,120,371,352,666,190,527, 510,500,520,814,806,1618,1039,1087,1077,1060,1023,5493,3895,2070,1204,29997, 29998,29998,29999]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 a6 9. Bd3 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4.} b5 10. a3 {[%CAl Ba2a3,Ba3a4][%mdl 32]} Qb6 {[%CAl Rc5d4]} 11. Qf2 { White is slightly better.} c4 12. Be2 g6 13. O-O a5 14. a4 b4 15. Nb5 Na7 16. Bxc4 $1 dxc4 {[#]} (16... Nxb5 $142 17. Bxb5 Ba6) 17. d5 $1 $16 {[%mdl 512]} Bc5 (17... exd5 18. Bxb6) 18. Bxc5 Nxc5 19. Nd6+ {[%mdl 64] Double Attack} Kf8 20. Nxc4 Qc7 21. d6 Qc6 22. Nxa5 (22. Qh4 Ba6 $11) 22... Qb6 23. Nc4 {[%mdl 1024] White has strong compensation.} Qc6 {[#]} 24. Nd4 $1 {[%CAl Rd4c6]} (24. Qh4 $6 Ba6 $14) 24... Qa6 25. b3 Bb7 $2 {[%mdl 8192] Now Black is done in.} ( 25... Kg7 $16 {was called for.} 26. Rad1 (26. Qh4 Nc6 $16) 26... Rf8) 26. Qh4 $18 {aiming for f5!} Nc6 $2 {[#]} (26... h6 27. Qe7+ (27. Qf6 Kg8 $14) 27... Kg8) 27. Nb5 $2 $40 {[%mdl 128] White goes for the king.} ({Not} 27. Nxc6 Qxc6 28. Rf2 Ne4 $11) (27. f5 $1 {[%mdl 512] Intending fxe6 and mate.} gxf5 (27... exf5 28. Qf6) 28. Qh6+ (28. Qf6 Rg8 $11) 28... Ke8 29. Qg7 Nxd4 30. Qxh8+ Kd7 31. Qxh7) 27... Rd8 $2 (27... h6 {is more resistant.} 28. Nc7 {[%mdl 64] Double Attack} Qa7) 28. Qh6+ Kg8 29. Rae1 Na5 (29... Nd7 $142 30. f5 exf5) 30. Ne3 {[%CAl Bc4e3,Be3g4,Bg4h6][%mdl 32]} Qc6 31. Nd4 Qe8 32. Ng4 {[%CAl Rg4f6]} Nd7 {[#]} 33. f5 $1 {[%mdl 512]} Nc6 (33... exf5 34. Nxf5) 34. fxe6 fxe6 35. Nb5 {White threatens Nc7 and mate.} g5 36. Qxg5+ Qg6 37. Nh6+ {Av CentiPawn Loss W=-108/B=-87. Weighted=-75/-202} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "7.3"] [White "So, Wesley"] [Black "Sevian, Samuel"] [Result "1/2-1/2"] [ECO "C83"] [WhiteElo "2770"] [BlackElo "2660"] [Annotator "TA"] [PlyCount "56"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 27,56,21,42,22,14,12,20,12,27,14,15,17,8,12,14,9,9,13,8,4,15,16,16,16, 16,16,15,16,16,15,20]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O 11. Bc2 f5 12. Nb3 Qd7 13. Nbd4 Nxd4 14. Nxd4 c5 15. Ne2 {C83: Open Ruy Lopez: 9 c3 Be7.} Rad8 16. Nf4 d4 17. cxd4 Bc4 {[#] Hoping for ...g5.} 18. d5 Bxd5 {The position is equal.} 19. f3 Ng5 20. Nxd5 Qxd5 21. Qxd5+ Rxd5 22. Bxg5 Bxg5 23. f4 $36 {[%mdl 2048] White has good play.} Be7 24. Rfd1 Rxd1+ 25. Rxd1 g6 26. Rd7 Kf7 27. Kf2 Rd8 28. Rxd8 Bxd8 {A rather calm draw. Av CentiPawn Loss W=-2/B=-1. Weighted=-2/-1} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "7.4"] [White "Lenderman, Aleksandr"] [Black "Dominguez Perez, Leinier"] [Result "0-1"] [ECO "A08"] [WhiteElo "2634"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "110"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,110,-35,-34,-44,-43,-49,-42,-46,-27,-50,-25,-11,0,-22,22,24,2,-147, -44,-82,-69,-74,-77,-79,-57,-85,-67,-72,-59,-70,0,0,0,-82,-77,-76,-81,-68,-54, -116,-34,-34,-19,-511,-510,-495,-496,-476,-454,-601,-593,-595,-595,-1310,-1310, -1310,-585,-585,-576,-583,-574,-573,-562,-541,-519,-541,-526,-775,-771,-710, -646,-875,-872,-840,-825,-958,-945,-896,-879,-932,-903,-29963,-29961,-29970, -29970,-29969,-29971,-29970,-29971,-29985,-29986]} 1. Nf3 d5 2. g3 c5 3. Bg2 e6 4. O-O Nf6 5. d3 Nc6 6. Nbd2 Be7 7. e4 O-O 8. Re1 Qc7 9. e5 Nd7 10. Qe2 b5 { [%CAl Bb7b5,Bb5b4][%mdl 32]} 11. Nf1 Bb7 12. Bf4 {C00: French: Unusual White 2nd moves.} Rfc8 13. c3 a5 14. h4 {Black is slightly better.} a4 15. a3 b4 16. Ne3 Qd8 17. c4 Nd4 18. Nxd4 cxd4 {[#]} 19. Ng4 (19. Nxd5 $1 $11 {[%mdl 512] keeps the balance.} exd5 20. e6) 19... Nb6 (19... bxa3 $1 $17 20. bxa3 Nc5) 20. h5 h6 21. axb4 Bxb4 22. Rec1 Be7 23. Qd2 Rab8 {[%CAl Rd5c4]} 24. cxd5 {And now d6 would win.} Rxc1+ $1 25. Qxc1 Bxd5 (25... Rc8 $15 26. Qd1 Bxd5) 26. Bxd5 $11 Qxd5 27. Qd1 (27. Bxh6 $1 $11 Rc8 28. Qf4) 27... Rc8 28. Rc1 Rxc1 29. Bxc1 Qc6 30. Bd2 {[#]} (30. Nxh6+ $15 gxh6 31. Qg4+ Kh7 32. Qf4 $1 {[%mdl 512]}) 30... Nd7 (30... Bf8 $1 $17) 31. f4 $15 Qb5 $36 {[%mdl 2048] aiming for ...Nc5. Black has some pressure.} 32. Bc1 $2 {[%mdl 8192] This move loses the game for White.} (32. Qc2 $11 {and White stays safe.}) 32... Nc5 $19 33. Nf2 {[#]} Qb3 $1 34. Qe2 Qa2 35. Qe1 Qb1 36. Kg2 Nb3 37. Bd2 Qxb2 38. Bb4 a3 (38... Bxb4 $142 39. Qxb4 a3 40. Qb8+ Kh7) 39. Bxa3 Qxa3 40. Qe4 Qa6 41. Qf3 Nc5 42. Kh3 Qb7 43. Qe2 Qd5 44. g4 Qb7 45. Kg3 Qb1 46. Qf3 Qg1+ 47. Kh3 Qe1 48. Qa8+ Kh7 49. Qf3 Qe3 50. Kg2 Bh4 51. Ne4 Nxe4 {Black mates.} 52. Qxe4+ Qxe4+ 53. dxe4 d3 54. Kf3 {[#]} Bg3 $1 {[%mdl 576] Promotion} 55. Kxg3 d2 {Av CentiPawn Loss W=-78/B=-31. Weighted=-54/-34} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "7.5"] [White "Ramirez, Alejandro"] [Black "Swiercz, Dariusz"] [Result "1/2-1/2"] [ECO "B10"] [WhiteElo "2567"] [BlackElo "2649"] [Annotator "TA"] [PlyCount "195"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,195,-6,35,35,66,66,68,69,70,59,63,60,45,49,57,60,64,54,52,45,60,54,62, 61,60,59,62,51,62,45,61,54,67,62,68,50,65,66,80,70,79,50,70,58,88,69,129,106, 116,77,71,72,74,47,55,29,60,53,52,47,30,0,0,0,39,2,10,0,0,0,0,0,0,0,15,16,31, 31,27,27,27,18,25,29,70,78,100,40,35,35,54,0,20,8,58,35,31,18,16,0,0,0,0,0,0, -110,-103,-237,-235,-228,-208,-218,-210,-290,-284,-277,-278,-405,-8,-575,-520, -462,-451,-575,-554,-593,-614,-761,-754,-731,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-2, -2,-2,-2,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. Nf3 d5 3. d3 Qc7 4. Nbd2 e5 5. Qe2 dxe4 6. Qxe4 {B10: Caro-Kann: 2 d3 and 2 c4.} Bd6 7. Nc4 Nd7 8. d4 {[%CAl Rd4e5] White is slightly better.} Ngf6 9. Nxd6+ Qxd6 10. dxe5 Nxe4 11. exd6 Nxd6 12. Bf4 Ne4 13. Nd2 Nxd2 14. Bxd2 Nb6 15. O-O-O Be6 16. b3 f6 17. Bd3 Kf7 18. c4 Nd7 19. Be3 a6 20. Kb2 Rhe8 21. h3 ({Inferior is} 21. Bxh7 g6 $17) 21... h5 22. Be2 g6 23. Rd6 Ne5 24. Rhd1 Kg7 25. Kc3 Nf7 26. R6d2 h4 27. Bb6 Ng5 (27... Bf5 $14) 28. f3 Nf7 29. Bf1 Bf5 30. Kb4 g5 31. Re2 Ne5 32. Bc7 Nd7 33. Red2 Re7 $1 34. Bd6 Ree8 35. c5 a5+ $1 36. Kc3 Ne5 37. a4 Nf7 38. Bc7 Re7 39. Bb6 Re3+ 40. Kb2 Ne5 41. Re2 Rd3 42. Ree1 Rxd1 43. Rxd1 Kf7 44. Kc3 Ke7 45. Bc7 Be6 $1 46. Re1 Ng6 47. Bc4 Nf8 48. Bd6+ (48. f4 $1 $16 {[%CAl Rf4f5]} gxf4 49. Bxf4) 48... Kf7 $1 $14 49. Bd3 Re8 50. Bc7 (50. Bc2 $14) 50... Ra8 51. f4 Rc8 52. Bd6 gxf4 $1 53. Bxf4 Bd5 $1 54. Re2 Ne6 55. Bd6 Rg8 56. Bf5 Rg5 57. Bg4 (57. Bxe6+ $1 $11 { keeps the balance.} Bxe6 58. b4) 57... f5 $17 58. Bf3 (58. Rf2 $17 {only move.} ) 58... Bxf3 $1 $19 59. gxf3 {[%mdl 4096] Endgame KRB-KRN} f4 60. b4 {[#]} Rg3 $1 61. bxa5 {Threatens to win with Rb2.} Rxf3+ 62. Kc4 {Black should prevent Rb2.} Ra3 ({Worse is} 62... Rxh3 63. Rb2 $11) 63. Kb4 (63. Rb2 $142 Rxa4+ 64. Kd3) 63... Rxh3 $2 {[#]} (63... f3 $19 64. Rh2 Re3) 64. Rb2 $2 {[%mdl 8192]} ( 64. Bxf4 $1 $11 {[%mdl 512]} Nxf4 65. Rf2) 64... Rd3 65. Kc4 Rd4+ 66. Kc3 Rxa4 67. Rxb7+ Kg6 68. a6 Rxa6 69. Rb6 Rxb6 $2 (69... Ra3+ $19 70. Kb4 Re3) 70. cxb6 {KB-KN. The position is equal.} Nd8 {Hoping for ...f3.} 71. Bxf4 Kf5 72. Bc7 Nb7 73. Kd4 h3 74. Bh2 Kg4 75. Ke4 Nc5+ 76. Kd4 Nb7 (76... Nb3+ {is interesting.} 77. Ke4 Kg5 78. Kf3 Na5 79. Kg3 Kf5) 77. Ke4 c5 78. Kd5 Kf3 79. Be5 Kg2 80. Kc6 c4 {White must now prevent ...c3!} 81. Kxb7 $11 {Strongly threatening Kc7. KB-KPP} c3 $1 {[%CAl Rc3c2]} 82. Ka7 {b7 is the strong threat. } c2 83. Bf4 {And now b7 would win.} h2 84. b7 h1=Q {( -> ...Qa1+)} 85. b8=Q Qa1+ 86. Kb7 Qb2+ 87. Ka7 Qa3+ 88. Kb7 Qb4+ 89. Ka7 Qa4+ 90. Kb7 Qb5+ 91. Ka7 Qc5+ 92. Kb7 Qb5+ (92... Kf3 {looks sharper.} 93. Bh6 Qb4+ 94. Ka8 Qxb8+ 95. Kxb8 Ke4) 93. Ka7 Qxb8+ 94. Kxb8 Kf3 95. Bc1 Ke2 96. Kc7 Kd1 97. Bh6 c1=Q+ 98. Bxc1 {Black had all chances to win. Av CentiPawn Loss W=-19/B=-18. Weighted=-21/-24} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "7.6"] [White "Liang, Awonder"] [Black "Shankland, Sam"] [Result "0-1"] [ECO "A05"] [WhiteElo "2592"] [BlackElo "2691"] [Annotator "TA"] [PlyCount "76"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,76,37,13,68,30,27,22,36,29,37,0,3,4,0,-18,-18,-3,56,41,78,82,101,53, 84,108,241,130,133,56,45,0,-3,-92,-99,-99,-98,-301,-275,-265,-279,-263,-237, -220,-222,-226,-224,-193,-145,-229,-182,-183,-125,-170,-194,-347,-204,-347, -221,-239,-204,-249,-247,-233,-110,-243,-236,-911,-875]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. Re1 b5 {A49:1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems.} (6... c5 $11) 7. c3 Bb7 8. a4 bxa4 {The position is equal.} 9. Qxa4 Nbd7 10. Nbd2 {[%CAl Bb1d2,Bd2b3,Bb3a5][%mdl 32]} c5 11. e4 cxd4 12. Nxd4 Nc5 13. Qc2 Qc8 (13... a5 $11) 14. N2b3 Nfd7 15. Na5 Ba6 16. Bg5 {Black must now prevent Nac6.} Re8 17. Ndc6 Kf8 (17... Nd3 $16) 18. Qd2 (18. e5 $18) 18... Nd3 19. Re3 (19. Bxe7+ $16 Rxe7 20. Nxe7 Kxe7 21. e5 dxe5 22. Red1) 19... N7e5 $14 20. Bxe7+ Rxe7 21. Nxe7 (21. Rxd3 $1 $11 {remains equal.} Bxd3 22. Nxe5 dxe5 23. Qxd3) 21... Kxe7 $17 22. f4 Bh6 23. Rd1 $2 (23. Rxd3 $17 Nxd3 24. Qe3) 23... Qc5 24. Nb3 Qb6 25. Nd4 {[#]} Nxf4 $1 {[%mdl 512]} 26. gxf4 Bxf4 { Hoping for ...Nc4.} 27. Qf2 Bxe3 28. Qxe3 Kf8 29. Kh1 (29. Qf2 $17 {keeps fighting.}) 29... Kg8 30. Qg5 Nd3 (30... Qxb2 $19 31. Nf5 Qb3) 31. Rf1 { [#] intending Qf6.} Re8 $1 ({Not} 31... Nxb2 {[#]} 32. Rxf7 $1 {[%mdl 512]} ( 32. Qd5 $2 Rf8 $19) 32... Kxf7 33. e5 $11) (31... Qxb2 32. Qf6 $17) 32. h4 $2 ( 32. Qf6 Qc7 33. Ra1) 32... Ne5 ({Less strong is} 32... Nxb2 33. Rf6 $17) (32... Qxb2 $142 {Strongly threatening ...Nf2+.} 33. Qg3 Nc5) 33. Rf6 (33. Rf4 { was called for.}) 33... Bc8 34. b4 a6 35. h5 Qd8 {aiming for ...h6!} 36. hxg6 fxg6 (36... hxg6 $19 {Threatens to win with ...Ng4.} 37. Nf5 Bxf5 38. Rxf5 Qc7) 37. Nf5 (37. Nc6 $17 Qc7 38. Nxe5 Rxe5 39. Qd2) 37... Bxf5 $19 38. exf5 $2 (38. Rxf5 Qxg5 39. Rxg5) 38... Kg7 {Av CentiPawn Loss W=-58/B=-29. Weighted=-96/-41} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "8.1"] [White "Nakamura, Hikaru"] [Black "Shankland, Sam"] [Result "1-0"] [ECO "A00"] [WhiteElo "2736"] [BlackElo "2691"] [Annotator "TA"] [PlyCount "95"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,95,-29,-27,2,-62,-35,-62,-20,-18,-27,-24,0,0,22,15,21,22,58,65,75,66, 64,76,85,55,75,20,42,43,36,37,45,32,34,34,48,43,88,91,86,84,160,163,164,126, 127,120,271,260,277,277,326,338,331,302,405,389,766,771,696,516,744,593,691, 697,694,712,731,599,1016,1123,1124,1131,1605,1523,1537,1510,5265,1562,1520, 1532,1363,1314,1273,1247]} 1. g3 d5 2. Bg2 e5 3. d3 Nf6 4. Nf3 Bd6 5. Nc3 c6 6. e4 O-O 7. O-O h6 {A00: Irregular Openings.} 8. Nh4 (8. d4 $11 exd4 9. Nxd4) 8... Be6 9. Nf5 Bc7 {Black is slightly better.} (9... Bxf5 $5 10. exf5 Nbd7 $15 ) 10. Qf3 Re8 11. g4 dxe4 12. dxe4 Nh7 13. Rd1 Nd7 14. h4 Qf6 15. Qg3 g5 16. hxg5 hxg5 17. Rd3 Rad8 18. Rf3 Qg6 19. Be3 ({White should play} 19. Bf1 $16) 19... Ndf6 20. Bf1 Bb6 21. Bd3 Bxe3 22. fxe3 Bxf5 23. Rxf5 Nd7 24. Bc4 Re7 25. Raf1 {Strongly threatening Rxf7.} Rf8 26. a4 $36 {[%mdl 2048] White has strong initiative.} Kg7 ({Better is} 26... Nhf6) 27. Ne2 $16 Nhf6 28. Qg2 Ne8 29. Ng3 {[#] aiming for R5f3.} f6 $2 {Black cannot hold the game after this.} (29... Nd6 $16 {might work better.}) 30. Rd1 $18 Rh8 31. Nh5+ Rxh5 32. gxh5 Qxh5 33. Be2 Qh4 34. Bg4 {[#] Hoping for Rf3.} Nc5 $2 (34... Kf8 35. Rf3 f5 36. Bxf5 g4) 35. Rf3 {White is clearly winning.} Qh7 36. Bf5 Qh5 37. Rd2 {And now Rh3 would win.} Qh4 38. Rh3 Qe1+ 39. Kh2 Kf7 40. b4 Ne6 41. Bxe6+ Kxe6 42. Rd8 Ng7 43. Qf3 Re8 44. Rd1 Qxb4 45. Rh6 (45. Rh7 $142 Rg8 46. Qg4+ Kf7 47. Rd7+ Ke8 48. Qd1) 45... Qf8 46. Qh3+ Kf7 47. Rd7+ Re7 48. Rh8 {Av CentiPawn Loss W=-42/ B=-72. Weighted=-32/-60} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "8.2"] [White "Swiercz, Dariusz"] [Black "Liang, Awonder"] [Result "0-1"] [ECO "B10"] [WhiteElo "2649"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "56"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,56,0,11,6,19,8,-8,-4,27,-27,-40,-59,-65,-109,-106,-167,-163,-474,-468, -537,-535,-513,-518,-514,-510,-495,-497,-495,-498,-612,-612,-769,-769,-677, -490,-587,-553,-718,-653,-643,-639,-777,-736,-831,-829,-825,-825,-807,-810]} 1. e4 c6 2. Nf3 d5 3. d3 Qc7 4. exd5 cxd5 5. c4 Nf6 6. Nc3 {B10: Caro-Kann: 2 d3 and 2 c4.} e6 7. g3 Bb4 8. Bf4 {The position is equal.} Qe7 9. d4 ({Better is} 9. Bg2) 9... O-O 10. c5 Ne4 11. Qb3 {Black keeps a firm grip on the game.} Nc6 {Strongly threatening ...e5!} 12. Bd3 {[#]} (12. Be3 $17) 12... e5 $1 $36 { [%CAl Re5d4][%mdl 2560] Black has strong initiative.} 13. Bxe4 $2 (13. Nxe5 { nothing else works.} Nxe5 14. dxe5 Nxc5 15. Qc2) (13. dxe5 Nxc5) 13... exf4 { Black is clearly winning.} 14. O-O dxe4 15. Nd5 Qd8 16. Nxb4 Nxb4 17. Qxb4 exf3 18. Rfe1 Qd7 {( -> ...Qh3)} 19. Qc4 fxg3 20. hxg3 Qh3 {[%csl Gf3][%CAl Rh3g2]} 21. Qf1 Qh6 {And now ...Bh3 would win.} 22. Re4 Be6 23. Rd1 Rad8 24. Rh4 Qg6 25. Re1 Bg4 26. Qc4 h5 27. d5 Rfe8 28. Rf1 Qe4 {Av CentiPawn Loss W=-50/B=-15. Weighted=-88/-10} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "8.3"] [White "Dominguez Perez, Leinier"] [Black "Ramirez, Alejandro"] [Result "1-0"] [ECO "D12"] [WhiteElo "2758"] [BlackElo "2567"] [Annotator "TA"] [PlyCount "73"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,73,24,9,17,29,27,12,48,33,45,39,43,41,74,65,69,65,75,68,61,65,99,89, 98,89,135,154,150,141,132,133,241,246,445,453,483,474,477,473,655,654,697,544, 552,550,524,529,793,612,645,626,660,625,658,651,648,643,610,457,793,787,1010, 993,948,940]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 a6 6. Qb3 Ra7 { D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4.} 7. Nh4 Bc8 8. Qc2 g6 {The position is equal.} 9. Bd3 Bg7 10. O-O O-O 11. Nf3 $36 {[%mdl 2048] Black is under pressure.} dxc4 12. Bxc4 b5 13. Be2 Bg4 14. e4 Nbd7 15. Be3 Rc7 16. Rfd1 Rc8 17. Rac1 Nb6 18. Ne5 Bxe2 19. Nxe2 ({Don't play} 19. Qxe2 $6 b4 $14) 19... Qe8 20. b3 Nfd7 (20... e6 $16 21. Qd3 (21. Nxc6 Nc4 $16) 21... Kh8) 21. Nxc6 $18 f5 $2 {[#]} (21... Nc4 22. bxc4 Rxc6) 22. d5 {White is clearly winning.} Kh8 23. Nf4 fxe4 24. Qxe4 Rf5 25. Nxe7 Re5 {[#]} 26. Nexg6+ $1 hxg6 27. Nxg6+ {[%mdl 64] Double Attack} Kg8 28. Nxe5 {aiming for f4.} Qxe5 29. Qxe5 Bxe5 30. Rc6 Rb8 31. d6 Bf6 32. Bxb6 Nxb6 33. d7 Bd8 34. Rdc1 Nxd7 (34... Rb7 $142 35. Rd1 Kf7) 35. Rc8 Kf7 36. Rxb8 Nxb8 37. Rc8 {[%mdl 64] Double Attack. Black got outplayed after the opening. Av CentiPawn Loss W=-20/B=-54. Weighted=-17/-46} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "8.4"] [White "Sevian, Samuel"] [Black "Lenderman, Aleksandr"] [Result "1/2-1/2"] [ECO "C10"] [WhiteElo "2660"] [BlackElo "2634"] [Annotator "TA"] [PlyCount "148"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,148,39,20,22,21,30,23,24,9,9,0,12,6,10,0,14,8,18,0,5,0,10,11,10,0,0, 0,0,0,16,0,0,0,31,38,34,44,73,73,108,108,105,108,141,122,104,118,115,118,151, 103,141,118,108,87,133,33,33,23,29,28,21,31,157,154,161,139,194,154,223,219, 231,220,258,249,256,256,250,207,207,207,207,200,381,380,369,358,368,336,336, 336,339,354,360,361,354,361,338,95,95,95,78,0,0,0,70,0,0,0,70,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Be3 Bd6 {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4.} 8. Bd3 O-O 9. O-O b6 {White has an edge.} 10. Re1 Bb7 11. h3 Nd5 12. Bg5 Be7 13. Bd2 c5 14. dxc5 Bxc5 15. Be4 Qc7 16. c4 Nf6 (16... Ne7 {seems wilder.} 17. Bxb7 Qxb7 18. Bc3 Rfd8 19. Qe2 Rac8) 17. Bxb7 Qxb7 18. Qc2 Be7 19. Bc3 Rfc8 20. Qe2 a6 21. a4 Nd7 22. Rad1 Bf6 23. Bxf6 Nxf6 24. Ne5 a5 25. Rd6 Rd8 26. Red1 Rxd6 27. Rxd6 h6 28. Qe3 Rb8 29. f3 Qc7 30. Qd4 $1 Kh7 31. Rc6 Qb7 32. Qd6 Ne8 33. Qd7 Kg8 34. Qxb7 (34. b3 $16) 34... Rxb7 $16 {[%mdl 4096] Endgame KRN-KRN} 35. Rc8 Kf8 36. c5 bxc5 37. Nc4 {Hoping for Rxe8+!} Rb4 (37... Rc7 $1 $14 38. Rxc7 Nxc7) 38. Nd6 $1 {[%csl Gd6][%CAl Rc8e8] } Ke7 39. Nxe8 $18 {KRN-KR} g6 (39... g5 $16) 40. Ra8 $1 Rb7 (40... Rxa4 $16 41. Nc7 Ra2) 41. b3 $1 h5 {[#]} 42. h4 $1 f6 43. Kf2 e5 44. Ke2 f5 45. Rxa5 Kxe8 46. Rxc5 Rxb3 47. Rxe5+ {KR-KR} Kd7 $2 (47... Kf7 48. a5 Rb4) 48. Rb5 Ra3 49. a5 Ra2+ 50. Kf1 Ke7 51. Rb7+ Kf6 52. Rb6+ Kg7 53. a6 f4 54. Rb7+ Kf6 {[#]} 55. a7 $2 (55. Ra7 $1 $18 {and the rest is easy.}) 55... g5 $16 56. hxg5+ Kxg5 57. Kg1 (57. Rf7 $16) 57... Kh4 $11 58. Kh2 {Strongly threatening Rf7.} Ra1 ( 58... Kg5 $11) 59. Rf7 (59. Rh7 $1 $14) 59... Kg5 60. Rg7+ Kh4 ({Black should play} 60... Kf6 $11 61. Rh7 Kg5) 61. Rf7 (61. Rh7 $14) 61... Kg5 {The position is equal.} 62. g3 Ra2+ 63. Kh3 fxg3 64. Kxg3 h4+ 65. Kh3 Ra3 66. Kg2 Ra2+ 67. Kh1 h3 68. Kg1 h2+ 69. Kh1 Kh4 70. Rh7+ Kg3 {[%CAl Ra2a1]} 71. Rg7+ Kh3 72. Rh7+ Kg3 {[%CAl Ra2a1]} 73. Rg7+ Kh3 {( -> ...Ra1+)} 74. Rh7+ Kg3 {Blacks defense is rewarded with a draw. Av CentiPawn Loss W=-13/B=-13. Weighted=-16/ -12} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "8.5"] [White "Moradiabadi, Elshan"] [Black "So, Wesley"] [Result "0-1"] [ECO "A13"] [WhiteElo "2555"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "66"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,66,14,23,26,0,35,35,22,0,14,0,15,0,0,-5,5,-19,-25,-20,-14,-19,-18, -31,-31,-87,-91,-88,-102,-156,-164,-186,-180,-208,-173,-289,-294,-293,-261, -294,-293,-276,-266,-701,-700,-687,-704,-698,-695,-680,-664,-651,-633,-594, -582]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 d4 5. O-O c5 6. e3 Nc6 7. exd4 cxd4 8. d3 Bd6 {A13: English Opening: 1...e6.} 9. Bg5 h6 10. Bxf6 $1 Qxf6 {White is slightly better.} 11. a3 a5 12. Nbd2 Qe7 13. Rc1 O-O 14. Re1 a4 15. Qc2 Rd8 16. Ne4 Bc7 17. c5 Bd7 18. Nfd2 Na5 {[%CAl Bc6a5,Ba5b3,Bb3c1][%mdl 32]} 19. Nc4 ({ Better is} 19. f4 $15) 19... Nb3 $17 20. Ned6 Nxc1 21. Qxc1 {[#]} (21. Rxc1 $142 Bc6 22. Nxb7 Bxg2 23. Kxg2) 21... Bxd6 $1 22. cxd6 Qg5 23. f4 Qc5 24. Bxb7 (24. Re5 $142 Qc8 25. Qd2) 24... Rab8 $19 25. Re5 Qa7 26. Be4 {Black must now prevent Ra5.} Bb5 27. f5 exf5 28. Qf4 $2 (28. Bd5 Bxc4 29. Bxc4) 28... Bxc4 $1 {[%mdl 64] Discovered Attack. Black is clearly winning.} ({Inferior is} 28... fxe4 29. Re7 $11) 29. Qxf5 g6 30. Qf6 Qb6 31. dxc4 {Threatening mate with Bd5!} Rxd6 32. Qf4 {Strongly threatening c5.} d3+ 33. c5 {[#]} d2 $1 {[%mdl 512] Av CentiPawn Loss W=-29/B=-5. Weighted=-34/-5} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "8.6"] [White "Xiong, Jeffery"] [Black "Robson, Ray"] [Result "1-0"] [ECO "C45"] [WhiteElo "2709"] [BlackElo "2673"] [Annotator "TA"] [PlyCount "93"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,93,11,-6,8,8,5,0,26,21,14,14,22,10,6,6,41,7,7,9,61,51,51,49,70,53,85, 87,82,76,99,97,112,107,102,81,86,92,97,91,314,320,299,317,287,284,279,279,354, 350,350,339,458,364,12657,6279,5561,492,29982,29983,29984,29985,29984,29985, 29984,29978,5816,5723,1369,593,558,558,29957,29964,11010,573,29979,29980,29980, 29981,29981,29982,29979,29980]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 d5 7. Qe2 dxe4 {C45: Scotch Game.} 8. Nc3 Bb4 {And now ...Bg4 would win.} 9. Bxe4 O-O {The position is equal.} 10. Bxc6 Rb8 {Hoping for ... Qd6.} 11. O-O Qd6 12. Bb5 $1 Ng4 $132 {[%csl Gg4][%CAl Rd6h2][%mdl 2048] Black is not keeping still} 13. g3 Qc5 14. Bd3 Bxc3 15. bxc3 Ne5 (15... Bd7 $11) 16. Ba3 $14 Qxa3 17. Qxe5 Be6 18. Rfe1 Qd6 19. a4 Rfd8 20. Rad1 {Strongly threatening Bxh7+!} Qc6 21. Bb5 Qb7 22. Rd4 g6 23. Rh4 Qf3 {White must now prevent ...Bd5.} 24. Rf4 Qb7 25. Qf6 c6 $2 {Loses the game.} (25... Qc8 $16) 26. Bd3 $18 {Threatens to win with Bxg6!} Re8 {[#]} 27. Bxg6 $1 {[%mdl 576] Deflection} fxg6 ({Weaker is} 27... hxg6 28. Rh4 Kf8 29. Rh8#) 28. Rxe6 c5 {[#] } 29. Qe5 $1 Qd7 30. Rxe8+ Rxe8 31. Qxc5 {[%mdl 4096] Endgame KQR-KQR} Qd1+ 32. Kg2 Qxc2 $2 (32... Qd7 33. c4 Rd8) 33. Qxa7 (33. Qd5+ $142 Kh8 34. Qb5) 33... Qb3 34. Qd7 (34. c4 $142 {White wants to mate with Qf7+.} Qb8 35. Qf7+ Kh8 {[#] } 36. Rh4 $1 {[%mdl 512]}) 34... Ra8 (34... Qe6 $18 35. Qb5 Rc8) 35. c4 Qxa4 36. Qe6+ Kh8 37. Rf7 Qa1 38. Qe7 Kg8 39. Rxh7 {[%csl Gh7][%CAl Re7f7]} Rf8 40. Rh4 {[%csl Gh4][%CAl Re7h7]} Qa8+ 41. Qe4 Qa6 42. Qd5+ Kg7 43. Qe5+ Rf6 44. Rf4 {White mates.} Qa8+ 45. Kg1 Qf8 46. Qxf6+ Qxf6 47. Rxf6 {Av CentiPawn Loss W=-101/B=1151. Weighted=-111/306} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "9.1"] [White "Robson, Ray"] [Black "Nakamura, Hikaru"] [Result "1-0"] [ECO "B42"] [WhiteElo "2673"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "125"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,125,42,52,28,31,12,35,33,34,34,37,0,5,0,0,0,8,17,89,83,118,109,152, 69,51,62,79,-36,-41,-44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,24,0,0,0,91,85,131,136, 145,142,159,82,273,265,251,254,319,219,191,24,28,8,34,40,40,36,268,262,218,262, 225,8,8,0,213,81,5213,97,29981,29982,29980,29974,29982,29983,29986,29966,29964, 29962,29970,29971,29973,29973,29973,29974,29973,29975,29975,29974,29974,29975, 29974,29976,29976,29977,29977,29978]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O Qc7 7. Qe2 d6 8. c4 Nbd7 9. Nc3 {B42: Sicilian: Kan Variation: 5 Bd3.} Ne5 10. f4 Nxd3 11. Qxd3 {White is slightly better.} Be7 12. b3 O-O 13. Bb2 b6 14. Rae1 Bb7 15. Kh1 Nd7 16. f5 Nc5 (16... Bh4 $11) 17. Qg3 $1 $16 {aiming for Nd5!} Bf6 18. Ndb5 $1 {[%CAl Rb5c7]} axb5 {[#]} 19. Nd5 $1 { [%mdl 512]} exd5 20. Bxf6 {[%csl Gf6][%CAl Rg3g7]} g6 21. Qh4 (21. exd5 $16 Rfe8 22. Qf4) 21... Nd7 $1 $15 {[%CAl Rd7f6]} (21... Nxe4 $2 22. Rxe4 $1 { [%mdl 512]} h5 23. Re7 $1 $18 {[%mdl 512]}) (21... bxc4 22. Qh6 Ne6 23. Rf3 Rab8 24. Rh3 Rfe8 25. Qxh7+ Kf8 26. Qh8#) 22. Be7 {Qh6 is the strong threat.} f6 {Hoping for ...Rf7.} ({Don't blunder} 22... Rxa2 $2 23. fxg6 hxg6 24. Bxf8 $18) ({Wrong is} 22... dxc4 $2 23. Qh6 $18) (22... Ne5 {is interesting.} 23. cxd5 b4 24. Rc1 Qd7 25. Bxf8 Rxf8 26. h3 Ba6) 23. fxg6 hxg6 24. Bxf8 Rxf8 25. exd5 $40 {[%mdl 128] White mounts an attack.} Ne5 {[%CAl Rb5c4]} 26. Rxf6 Qe7 27. Rxf8+ $1 Qxf8 28. Kg1 bxc4 29. bxc4 Ba6 30. Re4 Qf5 31. Qd8+ Qf8 32. Qc7 g5 (32... Qf5 $1 $11 {remains equal.} 33. Qd8+ Qf8) 33. h3 $1 $16 Qf5 34. Re1 Bxc4 35. Qxd6 Nf7 36. Qxb6 ({White has to play} 36. Qb8+ $1 Kh7 37. Qxb6) 36... g4 $2 (36... Bxa2 $16 37. d6 (37. Rf1 Qxd5 38. Qg6+ Kf8 $11) 37... Be6) 37. hxg4 Qxd5 38. a4 Qd7 39. Qg6+ Kf8 40. Qf6 $2 ({White must play} 40. Qc2 $1 $18 { [%CAl Rc2c4]} Qd4+ 41. Qf2 Qxg4 42. Qe3) 40... Qxa4 $11 41. g5 {And now g6 would win.} Qa7+ 42. Kh1 {Black must now prevent g6.} Qa6 43. Qd4 {Threatens to win with Rb1.} Bd3 $2 ({Better is} 43... Bb5 $1 $14) 44. Ra1 $18 Qg6 45. Ra8+ Ke7 {[#]} 46. Ra7+ $2 (46. Qa7+ $1 $18 Ke6 47. Re8+ Kd5 48. Qa5+ Kd6 49. Rf8) 46... Kf8 $11 47. Ra8+ $2 (47. Kg1 $11 Qc6 48. Rxf7+ Kxf7 49. Qxd3 Qc5+ 50. Kh2) 47... Ke7 $18 {[#] intending ...Qh5+. Black is on the road to losing.} 48. Qc5+ (48. Qa7+ $1 $18 {and the rest is easy.} Ke6 49. Re8+ Kd5 50. Qb7+ Kd6 51. Qb4+ Kd5 52. Qb3+ Kd6 53. Qa3+ Kd5 54. Qb3+ Kd6 55. Qb4+ Kd5 56. Qb7+ Kd4 57. Qa7+ Kd5 58. Qb7+) 48... Qd6 $2 {[%mdl 8192]} (48... Nd6 $16) 49. Ra7+ $2 ( 49. Qa7+ $18 {is the precise move to win.} Ke6 50. Re8+ Kf5 51. Qxf7+ Kxg5 52. Qg7+ Bg6 53. Re5+ Kf4 54. Ra5 Qd1+ 55. Kh2) 49... Ke6 $2 {[%mdl 8192]} (49... Kd8 $16 50. Ra8+ Ke7 51. Qa7+ Ke6 52. Re8+ Kf5 53. Qxf7+ Kxg5 54. Qg7+ Bg6 55. Re5+ Kf4) 50. Qc8+ {White mates.} Ke5 51. Qe8+ Kf4 52. Qxf7+ {[%mdl 4096] Endgame KQR-KQB} Kg4 53. Qd7+ Qxd7 54. Rxd7 {KR-KB} Bf5 55. Rg7 Bb1 56. Kg1 Bf5 57. Kf2 Bb1 58. Ke3 Bc2 59. Rc7 Bf5 {[#]} 60. g6 $1 Bxg6 {[#]} 61. Rg7 $1 Kf5 { [#]} 62. Rxg6 $1 {[%mdl 64] Deflection} Kxg6 63. Kf4 {Av CentiPawn Loss W=-33/ B=-57. Weighted=-73/-57} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "9.2"] [White "So, Wesley"] [Black "Xiong, Jeffery"] [Result "1-0"] [ECO "B33"] [WhiteElo "2770"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "103"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 24,103,35,0,0,0,0,0,16,20,78,-25,35,35,15,22,15,23,27,28,26,-90,25,16, 45,25,22,4,72,0,0,0,30,0,145,81,61,54,105,110,126,126,82,116,133,103,91,90,77, 0,0,0,8,0,0,0,0,0,0,0,8,0,0,0,11,11,164,164,164,164,164,164,164,156,1224,544, 5547,102,5522,5522,5508,5500]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. Nc2 Rb8 13. a3 O-O {[#] B33: Sicilian: Pelikan and Sveshnikov Variations.} 14. h4 $1 {[%mdl 512]} Bh6 (14... Bxh4 15. Qh5) 15. g4 Bf4 {The position is equal.} 16. Qf3 Bb7 (16... a5 $11) 17. g5 (17. Bg2 $16) 17... Re8 (17... Na5 $11) 18. Nxf4 $14 exf4 19. O-O-O $1 b4 20. axb4 (20. Qxf4 bxc3 21. bxc3 Na5 $17) 20... Nxb4 21. Nxb4 Bxe4 22. Qxf4 (22. Qh3 $11) 22... Rxb4 ({Black should play} 22... Qa5 $1 $17 {[%CAl Ra5a1]} 23. Bd3 Bxh1) 23. Bd3 $1 $11 (23. Qxd6 $2 Ra4 $19) ( 23. Rxd6 $2 Qb8 $19) ({Avoid the trap} 23. f3 $2 Qa5 $19) 23... Bxh1 24. Qxb4 Bf3 {Hoping for ...a5.} 25. Rd2 d5 (25... Re1+ $11 {keeps the balance.} 26. Kc2 g6) 26. Bxa6 (26. Qf4 $16 Bh5 27. b3) 26... h6 27. gxh6 Re4 28. Qc5 (28. Rd4 { looks sharper.} Qxh4 29. Qb8+ Kh7 30. hxg7 Re1+ 31. Kc2) 28... Rxh4 (28... Re1+ $11 29. Kc2 Qxh4) 29. Qc8 (29. hxg7 $142 Kxg7 30. Be2 Bxe2 31. Rxe2) 29... Qxc8 $16 30. Bxc8 Rxh6 {[%mdl 4096] Endgame KRB-KRB} ({Black should try} 30... gxh6 $14 31. Bb7 Rh5) 31. Bb7 Rh5 32. b4 Kf8 33. Kb2 Rf5 34. Kb3 Ke7 35. Ka4 g5 {[#] } 36. b5 (36. Ba8 $1 $16) 36... Rf4+ $11 37. Ka5 Kd6 $1 38. b6 Rc4 39. Rd3 Rc5+ 40. Kb4 Rc4+ ({Wrong is} 40... Be2 $2 41. Rxd5+ Rxd5 42. Bxd5 $18) 41. Kb3 Rf4 $1 42. c4 {[%CAl Rb7d5]} Kc5 43. cxd5 {d6 is the strong threat.} Rb4+ 44. Kc3 Rxb6 $2 {[#]} (44... Be2 $11 {and Black is okay.} 45. d6 Bxd3) 45. d6 $1 $18 { [%CAl Rd6d7] And now d7 would win.} ({Not} 45. Rxf3 Rxb7 46. Rf5 g4 $11) 45... Rxb7 46. d7 Rxd7 47. Rxd7 {KR-KB} f5 48. Kd3 Be4+ $2 (48... Bg2 $16 49. Rg7 Be4+ 50. Ke3 Kd5 51. Rxg5 Ke5) 49. Ke3 g4 50. Kf4 $2 (50. Rd8 $18 {is the precise move to win. Black must now prevent Rd7.} Kc4 51. Rf8) 50... Kc6 $2 { [%mdl 8192]} (50... Kc4 $16 51. Ke3 Kc5) 51. Rf7 Kd6 52. Rxf5 {Av CentiPawn Loss W=-57/B=-94. Weighted=-45/-80} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "9.3"] [White "Lenderman, Aleksandr"] [Black "Moradiabadi, Elshan"] [Result "1-0"] [ECO "A01"] [WhiteElo "2634"] [BlackElo "2555"] [Annotator "TA"] [PlyCount "91"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,91,6,17,37,14,11,0,7,0,2,0,0,0,0,0,0,-39,10,0,14,0,0,0,28,8,31,0,0,0, 0,-8,60,79,78,24,44,18,21,11,46,44,46,43,46,31,35,0,0,0,9,0,49,56,72,32,53,50, 614,611,621,619,5631,5179,1633,365,403,415,696,492,504,486,5181,4184,29980, 29981]} 1. b3 Nf6 2. Bb2 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. d4 a5 7. c4 a4 8. O-O axb3 9. axb3 Rxa1 10. Bxa1 Bf5 {A49:1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems.} 11. Nc3 c6 12. Nh4 Bc8 {The position is equal.} 13. e4 e5 14. Nf3 exd4 15. Nxd4 Na6 16. Re1 Re8 17. Bb2 Qa5 18. Na4 Bg4 19. f3 Bd7 20. Bc3 Qd8 21. Qd2 b6 (21... Qb8 $5 {[%CAl Rb7b5]}) 22. Nc2 b5 23. cxb5 cxb5 24. Nb2 Qb8 (24... Qc7 $11 25. Nd1 {[#]} b4 $1 {[%mdl 512]}) 25. b4 $14 Rc8 26. Bd4 ( 26. Nd1 $16) 26... Nc7 $11 {Black wants to play ...Ne6.} 27. Nd3 Ne6 {White must now prevent ...Rxc2!} 28. Bb2 Qa7+ 29. Ne3 Ne8 30. Ra1 $36 {[%mdl 2048] White fights for an advantage.} Qb6 31. Bxg7 Kxg7 32. Nf4 Nxf4 33. gxf4 Nf6 34. Kh1 Be6 35. f5 Bc4 36. f4 Re8 37. Qc3 Kg8 $2 {[%mdl 8192] This move loses the game for Black.} (37... Rc8 $14) 38. Nxc4 $18 ({Stronger than} 38. Qxf6 Qxe3 39. fxg6 hxg6 $15) 38... bxc4 39. Qxf6 Qxb4 40. fxg6 hxg6 41. Qd4 $2 (41. f5 d5 42. fxg6) 41... Qb3 42. Rc1 Rc8 (42... Qb4 $142 43. Rxc4 Qb1+ 44. Qg1 Qxg1+ 45. Kxg1 Kf8) 43. e5 {Hoping for e6.} dxe5 44. fxe5 {Threatens to win with e6!} c3 {[#]} (44... Qa3 $142 45. Qf4 (45. Rxc4 Rxc4 46. Qxc4 Qa1+ 47. Qf1 Qxe5 $18) 45... Qe7) 45. Bd5 $1 Qb2 {[#]} 46. Bxf7+ $1 {[%mdl 576] Double Attack. Av CentiPawn Loss W=-82/B=-20. Weighted=-114/-69} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "9.4"] [White "Ramirez, Alejandro"] [Black "Sevian, Samuel"] [Result "1-0"] [ECO "C77"] [WhiteElo "2567"] [BlackElo "2660"] [Annotator "TA"] [PlyCount "133"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,133,8,21,20,18,9,9,9,31,9,9,5,6,6,4,6,13,15,27,24,25,0,0,0,5,0,59,63, 68,16,15,20,15,2,12,0,0,7,0,0,12,0,0,0,0,0,0,0,0,0,0,0,68,86,60,68,68,75,87,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,29,26,35,31,36,47,555,549,655,655,655,655,655,655, 830,893,655,655,655,655,5413,5077,2940,2247,7759,6187,29977,29978,29978,29979, 29979,29980,29980,29981,29981,29982,29982,29983,29983,29983,29983,29984,29984, 29985,29985,29986,29986,29987,29990,29988]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 b5 6. Bb3 Bc5 7. Nd5 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} Bb7 8. O-O Na5 9. d4 {The position is equal.} Nxb3 10. cxb3 (10. axb3 { keeps more tension.} exd4 11. Bg5 Bxd5 12. exd5 O-O 13. Re1) 10... exd4 11. Bg5 {Black should prevent Bxf6.} Bxd5 12. exd5 O-O 13. Rc1 $36 {[%mdl 2048] White has the initiative.} Be7 14. Qxd4 Ne8 15. h4 h6 16. Be3 Bf6 17. Qg4 Bxb2 18. Rc2 f5 ({Black should try} 18... Nf6 $11 19. Qg3 Nh5 20. Qxc7 Qxc7 21. Rxc7 Nf6 ) 19. Qg3 $1 $14 Qf6 20. Bxh6 (20. Bg5 $14 hxg5 21. hxg5) 20... Qxh6 $11 21. Rxb2 Qd6 22. Qxd6 (22. Qe5 {looks sharper.} Nf6 23. Qxf5 Nxd5 24. Qd3 Qe6 25. Re2) 22... cxd6 23. Rc2 Nf6 24. Rfc1 g6 25. Ng5 Rfe8 26. g3 a5 27. a3 b4 28. a4 Re5 29. Rd2 Rae8 30. Kf1 Kg7 31. Nf3 Rxd5 ({Black should play} 31... Ne4 $11 32. Rdd1 R5e7) 32. Rxd5 $14 Nxd5 $11 {[%mdl 4096] Endgame KRN-KRN} 33. Rd1 Nf6 34. Rxd6 Rc8 35. Rd3 (35. Nd2 $16) 35... Rc2 36. Ne5 Ne4 37. Rxd7+ Kf6 38. f4 Nxg3+ 39. Ke1 Nh5 40. Rd6+ Ke7 41. Rc6 Rb2 42. Nxg6+ Kd8 43. Rc5 Ng3 $1 44. h5 Rxb3 45. Rd5+ Kc7 $2 {[%mdl 8192] [#] Now Black is done in.} (45... Ke8 $14) 46. h6 $1 $18 {[%CAl Rh6h7] Black must now prevent h7.} Rb1+ 47. Rd1 Rb2 { [%csl Gg3][%CAl Rb2e2]} 48. Rc1+ Kd6 49. h7 Re2+ 50. Kd1 Rh2 51. h8=Q Rxh8 52. Nxh8 Kd5 53. Ng6 Kd4 54. Rc8 Ne4 55. Kc2 Nc5 {[#]} 56. Rxc5 $1 {White mates.} Kxc5 {KN-K3P} 57. Kb3 Kd4 58. Ne7 Ke4 59. Nc6 Kxf4 60. Nxa5 {KN-KPP} Ke4 61. Nc4 f4 62. a5 Kd5 63. Kxb4 f3 64. Kb5 f2 65. Nd2 Kd6 66. Kb6 Kd7 67. Kb7 { Av CentiPawn Loss W=-35/B=-29. Weighted=-32/-10} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "9.5"] [White "Liang, Awonder"] [Black "Dominguez Perez, Leinier"] [Result "1/2-1/2"] [ECO "A08"] [WhiteElo "2592"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "166"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,166,3,0,30,10,0,-7,0,-38,-27,-47,-46,-71,-84,-84,-83,-93,-76,-82,-82, -121,-139,-150,-132,-139,-130,-229,-224,-222,-212,-212,-191,-270,-159,-177, -158,-141,-50,-56,-50,-54,-58,-84,-79,-83,-63,-89,-75,-85,0,-93,-92,-102,-90, -106,-111,-177,-143,-158,-148,-165,-131,-205,-86,-86,-86,-178,-79,-93,0,0,0,0, 0,0,258,255,381,340,340,244,464,532,522,493,507,499,459,437,445,57,138,153,674, 420,1110,1029,6821,6817,7290,3839,12831,12831,1887,0,12825,12828,12829,12829, 510,12830,12830,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-28000, -28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000, -28000,-28000,-28000,-28000]} 1. Nf3 d5 2. g3 c5 3. Bg2 e6 4. O-O Nf6 5. c4 d4 6. e3 Nc6 7. exd4 cxd4 8. d3 h6 {A13: English Opening: 1...e6.} 9. Re1 Bd6 10. Na3 O-O {The position is equal.} 11. Nc2 a5 12. b3 e5 13. Na3 Bb4 $36 {[%mdl 2048] Black is in control.} 14. Re2 Re8 15. Nb5 Bf5 16. a3 Bc5 17. Re1 Qd7 18. Ra2 Rad8 19. Nh4 Bh7 20. Rd2 (20. h3 $17) 20... g5 $1 $19 21. Nf3 e4 $1 { [%CAl Re4f3]} 22. dxe4 Nxe4 23. Rd3 (23. Rb2 {was necessary.}) 23... Nf6 (23... g4 $19 24. Nh4 Ng5) 24. Rd2 $17 d3 $1 25. Nc3 Qf5 (25... g4 $1 $17 {[%CAl Rg4f3]} 26. Rxe8+ Rxe8) 26. Bb2 $1 $15 Nd4 27. Nxd4 Bxd4 28. Nd5 Bxb2 29. Rxb2 {With the idea Ne7+.} Kg7 30. Rd2 Rxe1+ 31. Qxe1 Re8 (31... Nxd5 $17 32. Bxd5 Qf6) 32. Qd1 (32. Qa1 $11 {keeps the balance.}) 32... Nxd5 $17 33. Bxd5 b6 34. Kg2 Qe5 35. b4 (35. h3 $17 {keeps fighting.}) 35... axb4 36. axb4 Qc3 37. b5 Re7 38. h4 (38. Ra2 $17) 38... Bg6 (38... gxh4 $1 $19 39. gxh4 Bf5) 39. h5 Bh7 40. Kh2 (40. g4 $17) 40... Ra7 (40... Bf5 $19 {is more deadly.} 41. Kg2 g4) 41. Qe1 Ra1 ({Black should try} 41... Qf6 $1 $17) 42. Qe3 $11 Qf6 43. Be4 Bxe4 44. Qxe4 {[%mdl 4096] Endgame KQR-KQR} Rc1 $2 {[%mdl 8192]} (44... Ra3 $11) 45. Qxd3 $18 Rc3 (45... Qe6 $142 46. Rc2 Rb1) 46. Qd4 Qxd4 47. Rxd4 {KR-KR} Kf6 $2 (47... Rf3 48. Kg2 Rc3) 48. Rd6+ Kg7 49. Rc6 g4 50. Kg2 Rc1 51. f4 $1 {[%CAl Rf4f5]} Rc3 52. Kf2 $2 (52. f5 $18) 52... Rf3+ $1 $14 53. Ke2 $1 Rc3 $2 (53... Rxg3 $16 54. Rxb6 Rf3) 54. f5 $18 Kf8 (54... Kh7 $142 55. f6 Rxg3 56. Rxb6 Rh3) 55. Rxh6 Rxc4 56. Rxb6 Kg7 57. Ke3 f6 58. Rb8 Rc3+ 59. Kf2 $2 ({White has to play} 59. Ke4 $18 {Threatens to win with b6.} Rxg3 60. Kf4) 59... Rc2+ $2 { [%mdl 8192] [#]} (59... Rf3+ $11 60. Ke2 Rxf5) 60. Ke1 $1 Rc5 61. b6 Rxf5 62. h6+ $1 Kh7 {[#]} 63. b7 $2 (63. Rf8 $1 $18 {Black must now prevent b7.} Rb5 64. Rxf6) 63... Rb5 $11 64. Ke2 Rb3 65. Kd2 f5 66. Kc2 Rb6 67. Kd3 Rb1 68. Ke3 Rb4 69. Ke2 Rb3 70. Kd2 Rb1 71. Kc2 Rb6 72. Kd3 Rb1 73. Ke3 {Hoping for Kf4.} Rb4 74. Rf8 (74. Kd3 {keeps more tension.} Rb1) 74... Rxb7 75. Kf4 {White wants to play Rf6.} Kxh6 76. Kxf5 $2 {[%mdl 8192]} (76. Rxf5 $11 Rb4+ 77. Ke5) 76... Kg7 {Mate.} 77. Ra8 Rb5+ 78. Kxg4 Rb4+ 79. Kh5 Rb5+ 80. Kh4 Rb4+ 81. g4 Rb5 82. Ra7+ Kg6 83. g5 Rb4+ {[%mdl 32768] Av CentiPawn Loss W=91/B=224. Weighted=40/ 107. An unexpected result.} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.28"] [Round "9.6"] [White "Shankland, Sam"] [Black "Swiercz, Dariusz"] [Result "1/2-1/2"] [ECO "B12"] [WhiteElo "2691"] [BlackElo "2649"] [Annotator "TA"] [PlyCount "166"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,166,35,32,18,13,14,4,7,23,25,22,17,16,16,22,0,-6,-31,-26,-29,-50,-39, -35,-33,-31,-55,-35,-56,-64,-57,-54,-57,-27,-18,-10,-15,-8,-11,-8,-8,-8,-8,-8, -12,-13,-12,-9,-354,-42,-108,-93,-92,-93,-92,-92,-90,-112,-102,-119,-109,-70, -138,-83,-84,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-8,-8,-8,-8,-128,-8, -8,-8,-8,-8,-8,-8,-18,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-5,-5,-5,-5,-5,-5,-5,-5,-5, -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,0,0,0]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. O-O c5 7. Na3 {[%CAl Bb1a3,Ba3b5,Bb5c3][%mdl 32] B12: Caro-Kann: Advance Variation.} Nec6 8. c4 Be4 9. Nb5 $1 a6 10. Nc3 cxd4 11. Nxd4 Nxd4 12. Qxd4 Nc6 13. Qe3 Bxg2 14. Kxg2 d4 $36 {[%mdl 2112] Double Attack. White is under pressure.} 15. Qe4 dxc3 16. bxc3 Qc7 17. Rb1 Bc5 18. Bg5 Rc8 (18... h6 $5 {[%CAl Rh6g5]} 19. Bf4 g5 $11) 19. h4 b6 20. Bf4 Ne7 21. h5 g5 22. hxg6 ({Wrong is} 22. Bxg5 $2 Rg8 $19) 22... fxg6 23. Bg5 O-O 24. Bf6 Nf5 25. Bg4 $1 Be7 26. Bxf5 $1 gxf5 27. Qh4 $1 {[%CAl Rh4g5]} Bxf6 28. exf6 Kh8 29. Rh1 $2 {[%mdl 8192]} (29. Rg1 $1 $11 {and White is okay.}) 29... Rf7 $2 (29... Rg8+ $1 $19 30. Kf3 Rg4 $1 {[%mdl 512]}) 30. Kf1 (30. Rhg1 $1 $15) 30... f4 31. Rg1 Qxc4+ 32. Kg2 {[#]} f3+ $1 {[%mdl 576] Discovered Attack} 33. Kh3 {[#] With the idea Qxc4.} (33. Kxf3 Qxh4) 33... Qxh4+ $1 34. Kxh4 Rxf6 $17 {[%mdl 4096] Endgame KRR-KRR} 35. Rg4 b5 ({Reject} 35... Rxc3 $6 36. Rxb6 h6 37. Rb8+ Kh7 38. Rb7+ Kh8 39. Rb8+ Kh7 40. Rb7+ Kh8 41. Rb8+ $11) 36. Rd1 ({Better is} 36. a4 $15) 36... Rh6+ (36... e5 $142 37. Rd5 Re6) 37. Kg3 Rg6 (37... e5 $17 38. Rd7 Rhc6) 38. Rxg6 $1 $11 hxg6 {KR-KR} 39. Rd6 a5 40. Rxe6 Rxc3 41. Re5 Ra3 42. Rxb5 Rxa2 43. Kxf3 Kg7 44. Kg4 Kh6 45. f4 a4 {...Ra1 is the strong threat.} 46. Ra5 a3 47. Kg3 Ra1 {Strongly threatening ...a2.} 48. Kg2 Kg7 (48... a2 $5 49. Ra7 $8 Kh5 $11) 49. Ra6 Kf7 50. Kh2 a2 51. Kg2 Ke7 52. Kh2 Kd7 53. Kg2 Kc7 54. Kh2 Kb7 55. Ra3 Kb6 56. Kg2 Kc5 57. Ra8 Kd4 58. Ra7 Ke4 59. Ra8 Kxf4 60. Ra7 {[#]} (60. Ra6 $11 {keeps the balance.} Ke4 61. Ra4+ Ke5 62. Ra5+ Kd6 63. Ra6+ Ke5 64. Ra5+ Ke4 65. Ra4+ Kd3 66. Ra8) 60... g5 (60... Ke4 $1 $17 { [%CAl Re4d3]} 61. Ra8 g5 62. Ra4+ Kd3) 61. Ra8 {The position is equal.} Kf5 62. Ra7 Ke4 63. Ra8 Kd4 64. Ra7 g4 65. Ra8 Kc4 66. Ra7 Kb3 67. Rb7+ $1 Kc3 68. Rc7+ Kd4 {( -> ...Rg1+!)} 69. Ra7 g3 70. Ra8 Kd3 {White must now prevent ...Kc3.} 71. Rd8+ Kc3 {Hoping for ...Rg1+!} 72. Rc8+ Kb4 73. Rb8+ Kc4 74. Rc8+ Kd5 { And now ...Rg1+ would win.} 75. Rd8+ Kc6 76. Ra8 Kb7 77. Ra3 Kb6 78. Ra8 Kc7 { Threatens to win with ...Kb6.} 79. Ra3 Kb7 {aiming for ...Kc6.} 80. Ra4 Rb1 81. Rxa2 Rb6 82. Kxg3 Ra6 83. Rxa6 Kxa6 {Black had all chances to win. Av CentiPawn Loss W=-9/B=-8. Weighted=-14/-17} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "10.1"] [White "Nakamura, Hikaru"] [Black "Swiercz, Dariusz"] [Result "1/2-1/2"] [ECO "A00"] [WhiteElo "2736"] [BlackElo "2649"] [Annotator "TA"] [PlyCount "139"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,139,0,5,0,7,0,0,0,53,9,10,13,10,0,14,10,10,0,-12,-20,29,28,31,14,37, 23,26,39,29,29,29,33,45,54,63,45,64,11,18,15,7,22,8,0,51,0,0,0,0,-4,0,0,16,0,0, 0,0,0,0,-4,0,-66,0,0,0,0,0,0,0,0,0,-123,0,0,0,0,0,0,0,0,0,-290,-283,-153,-8,-8, -8,-8,-8,-8,-8,-15,-15,-15,0,0,0,-35,-14,-28,-28,-28,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. Nf3 O-O 5. e3 d5 6. c4 Nc6 7. Bb2 Re8 8. a3 {A00: Irregular Openings.} Bd6 9. cxd5 Nxd5 10. Be2 {[#]} Qd7 $146 (10... Na5 $11) ({Predecessor:} 10... Qe7 11. O-O Ne5 12. Nc3 Nf6 13. d4 Ng6 14. h3 c6 15. Qc2 a5 16. Bd3 Bd7 {1-0 (70) Khukhashvili,S (2312)-Gara,A (2367) Riadh 2017}) 11. Qc2 Qf5 12. Qxf5 Bxf5 13. Nc3 Nxc3 14. Bxc3 Ne5 15. Nh4 Be4 16. d4 Ng6 17. Nxg6 Bxg6 18. Bf3 Rab8 19. Bb4 Rec8 20. Rc1 a5 21. Bxd6 cxd6 22. Kd2 b5 23. Bb7 Rc4 24. Bd5 Ra4 25. Ra1 (25. g4 $14) 25... b4 $1 $11 26. axb4 Raxb4 {next ...Rb2+ is good for Black.} 27. Rhc1 a4 $1 28. Ke1 h5 (28... Kf8 $11) 29. Bc6 (29. Rc6 $14) 29... Rc8 30. d5 Rc7 31. Rc3 Be4 { Threatens to win with ...Bxd5!} 32. Rca3 Ra7 33. f3 Bc2 34. Kd2 Bb3 $1 35. e4 g5 36. Rc1 Kg7 37. Ke3 (37. Rb1 $11) 37... Re7 ({Better is} 37... f5 $1 $15 38. exf5 g4) 38. Rb1 Rc4 39. Kd3 Rc2 40. Bxa4 Bxa4 41. Rxa4 Rxg2 {[%mdl 4096] Endgame KRR-KRR} 42. Rb6 (42. Ra6 $11 {keeps the balance.}) 42... Rd7 (42... Rxh2 $17 43. Ra1 (43. Rxd6 Rh3 $17) 43... Rd7) 43. Raa6 $1 Rxh2 44. Rxd6 Rxd6 45. Rxd6 {KR-KR} h4 46. Rc6 h3 47. d6 $2 {[%mdl 8192]} (47. Rc1 $11 {and White stays safe.}) 47... Rh1 $19 {[#] ...h2 is the strong threat.} 48. Rc2 {With the idea d7.} Rd1+ (48... h2 $17 {Hoping for ...Rd1+.} 49. Kc4 Kf6) 49. Ke3 $1 $11 Rxd6 {Strongly threatening ...Rh6.} 50. Kf2 $1 h2 51. Kg2 Rh6 52. Kh1 Rh3 53. Rc5 Kg6 54. Rc6+ Kg7 55. Rc5 $1 f6 56. e5 f5 57. e6 Rxf3 58. Re5 {[#] e7 would kill now.The position is equal.} Kf8 59. e7+ Ke8 {aiming for ...Rh3.} 60. Kxh2 g4 61. Kg2 Rf4 62. Kg3 Re4 63. Rxf5 Kxe7 64. Ra5 Rb4 65. Rh5 (65. Ra7+ { looks sharper.} Kf6 66. Ra6+ Kf5 67. Ra5+ Kg6 68. Ra2) 65... Kf6 66. Ra5 Kg6 67. Rd5 Kf6 68. Ra5 Kg6 69. Rd5 Kf6 70. Ra5 $1 {Av CentiPawn Loss W=-10/B=-9. Weighted=-12/-14} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "10.2"] [White "Dominguez Perez, Leinier"] [Black "Shankland, Sam"] [Result "1/2-1/2"] [ECO "D85"] [WhiteElo "2758"] [BlackElo "2691"] [Annotator "TA"] [PlyCount "51"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,51,4,14,6,6,4,6,15,15,12,14,0,12,7,16,0,9,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. h3 O-O 9. Be2 b6 {The position is equal. 9...cxd4 is a critical line. Played by Peter Svidler in October 2020.} 10. Be3 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} Bb7 11. Qd3 cxd4 12. cxd4 Nc6 13. O-O e6 14. Rac1 Rc8 15. Rfd1 Qd6 {[#]} 16. h4 $146 ({Predecessor: } 16. Qd2 Rfd8 17. Bg5 Ne7 18. Rxc8 Rxc8 19. Qe3 Qc7 20. Bb5 a6 21. Ba4 b5 22. Bb3 {1/2-1/2 (44) Kozlov,V (2412)-De Carlos Arregui,I (2336) ICCF email 2014}) 16... h5 17. Bg5 Nb4 18. Qb1 $1 {[#] And now e5 would win.} Rxc1 19. Rxc1 { aiming for e5.} Nc6 20. e5 Qd7 21. Bb5 Rc8 22. Ba4 Qd5 23. Bb3 Qd7 $1 24. Ba4 Qd5 25. Bb3 Qd7 $1 26. Ba4 {A rather calm draw. Av CentiPawn Loss W=-2/B=-2. Weighted=-4/-2} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "10.3"] [White "Sevian, Samuel"] [Black "Liang, Awonder"] [Result "1/2-1/2"] [ECO "B13"] [WhiteElo "2660"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "119"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,119,20,42,5,18,0,13,7,7,3,8,0,53,4,51,16,15,-4,20,2,21,0,54,51,71,39, 82,89,105,91,143,161,152,154,168,181,166,95,98,66,60,55,74,16,43,43,37,34,41, 29,48,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,20,18,41,61,192,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,-4133,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. h3 g6 $1 {[%mdl 4] is more profitable than 6. ..Nf6 at the moment. Played by Quang Liem Le in September 2020.} 7. Nf3 { B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} Bf5 8. Be2 Bg7 9. O-O Nf6 10. Be3 O-O 11. Nbd2 {[%CAl Bb1d2,Bd2b3,Bb3c5][%mdl 32]} Ne4 (11... Rfe8 $11) 12. Re1 {[#]} (12. g4 $5 {[%CAl Rg4f5]}) 12... a6 $146 ({Predecessor: } 12... Rfe8 13. g4 Nxd2 14. Qxd2 Bd7 15. Bf4 e5 16. dxe5 Nxe5 17. Rad1 Bc6 18. Nxe5 Bxe5 19. Bxe5 Rxe5 {1/2-1/2 (33) Antipov,M (2584)-Bacallao Alonso,Y (2590) Lichess.org INT 2020}) 13. Nb3 Rad8 14. Qc1 Rfe8 15. Bf4 Qc8 16. Bf1 b5 (16... f6 $11) 17. a3 Nd6 18. Nc5 Na5 19. b4 Nac4 20. a4 Qc6 (20... Ne4 $142) 21. axb5 $16 axb5 22. Ra6 Qc8 23. Ra7 Bf6 24. Be5 ({White should play} 24. Ne5 $18) 24... Be4 25. Bxf6 exf6 26. Nh2 {[#] aiming for Bxc4.} h5 27. f3 (27. Re2 $16) 27... Bf5 28. g4 hxg4 29. hxg4 Qb8 30. Rae7 {[#] And now Rxe8+ would win.} Be6 31. Rxe8+ (31. R7xe6 {is interesting.} fxe6 32. Qh6 Qc7 33. g5 Qg7 34. Ng4) 31... Rxe8 32. Qf4 Qd8 33. Nxe6 Rxe6 34. Rxe6 fxe6 35. Qh6 Qe8 36. Bd3 f5 37. Nf1 Qf7 38. Qg5 Kh7 39. Ng3 Qg7 40. Ne2 Nf7 ({Black should try} 40... Nb2 $14) 41. Qh4+ $2 ({White must play} 41. Qe7 $18) 41... Qh6 $11 42. Qxh6+ Kxh6 { [%mdl 4096] Endgame KBN-KNN} 43. Nf4 Ng5 44. Kf2 Kg7 45. Kg3 Kf6 46. Ne2 Nf7 47. gxf5 gxf5 48. Kf4 Nh8 49. Bxc4 (49. Nc1 {with more complications.} Ng6+ 50. Kg3 Ne7 51. Nb3 Nc8 52. Kf4) 49... dxc4 {KN-KN} 50. Ke3 Ng6 51. Nf4 Ne7 52. Kf2 Nc8 53. Ke3 Nb6 54. Nh5+ $2 {[%mdl 8192]} (54. Kd2 $11) 54... Ke7 $2 (54... Kg5 $19 55. Ng7 Nd5+ 56. Ke2 Nc7) 55. Nf4 {The position is equal.} Kd6 56. Kd2 Ke7 57. Ng6+ Kd6 58. Nf4 Ke7 59. Ng6+ Kd6 60. Nf4 {Quite a comeback for White. Av CentiPawn Loss W=-30/B=-30. Weighted=-32/-28} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "10.4"] [White "Moradiabadi, Elshan"] [Black "Ramirez, Alejandro"] [Result "1/2-1/2"] [ECO "D12"] [WhiteElo "2555"] [BlackElo "2567"] [Annotator "TA"] [PlyCount "45"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,45,36,16,30,17,22,17,39,0,-2,0,34,37,60,37,34,32,43,12,22,17,46,44, 43,36,31,15,28,17,21,0,0,-13,-20,-4,11,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 a6 6. Qb3 Ra7 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4.} 7. Nh4 Bc8 8. a4 {[#]} b6 $146 ({Predecessor:} 8... e6 9. Nf3 c5 10. cxd5 exd5 11. Be2 Nc6 12. O-O Be6 13. Qd1 cxd4 14. Nxd4 Bc5 15. Nxe6 fxe6 { 1/2-1/2 (55) Svidler,P (2723)-Ivanchuk,V (2678) chess24.com INT 2020}) 9. Be2 e6 10. O-O c5 11. a5 Rb7 12. axb6 Rxb6 13. Qc2 cxd4 14. exd4 {next c5 is good for White.} dxc4 15. Nf3 Nc6 16. Bxc4 Nb4 17. Qe2 Be7 18. Be3 Nfd5 19. Na4 Rb8 {The position is equal.} 20. Nc5 O-O 21. Nxa6 Nxa6 22. Bxa6 Qb6 23. Bc4 { Av CentiPawn Loss W=-10/B=-9. Weighted=-10/-9} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "10.5"] [White "Xiong, Jeffery"] [Black "Lenderman, Aleksandr"] [Result "1/2-1/2"] [ECO "D26"] [WhiteElo "2709"] [BlackElo "2634"] [Annotator "TA"] [PlyCount "71"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,71,14,22,30,20,27,37,14,27,18,22,21,26,30,93,23,48,0,0,0,0,0,0,0,0, -10,-10,-20,-20,-20,-20,-20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O Nc6 7. a3 a6 8. dxc5 Qxd1 9. Rxd1 Bxc5 10. b4 Be7 11. Bb2 O-O 12. Nbd2 {[%CAl Bb1d2,Bd2b3,Bb3a5][%mdl 32] D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} Rd8 13. Nb3 Bd7 {[#]} 14. Rdc1 $146 {White is slightly better.} ({Predecessor:} 14. Be2 Nd5 15. Rac1 Be8 16. Nc5 Bxc5 17. Rxc5 Na7 18. g3 Bb5 19. Bxb5 Nxb5 20. Ra1 { 1/2-1/2 (33) Aleksandrov,A (2592)-Rakhmanov,A (2645) Moscow 2020}) 14... Rac8 15. Nfd4 Ne4 16. Nxc6 Bxc6 17. Na5 Nxf2 {[#]} (17... Nd6 $11) 18. Bd4 ({Not} 18. Nxc6 Rxc6 19. Kxf2 Rd2+ 20. Be2 Rxb2 $15) (18. Bxa6 $1 $16 Ng4 19. Bxb7 ( 19. Nxc6 Rxc6 20. Bxb7 Rcd6 $16) 19... Bxb7 20. Nxb7) 18... Ng4 $11 19. h3 Bg5 $36 {[%mdl 2048] Black is more active.The position is equal.} 20. hxg4 { Threatens to win with Bxa6!} Rxd4 $1 21. exd4 Bxc1 22. Rxc1 {[#] Black must now prevent Bxa6!} Bd5 23. Rc2 {Hoping for Bb3.} b6 24. Bd3 {[%CAl Rc2c8]} Rxc2 25. Bxc2 {And now Nb3 would win.} bxa5 26. bxa5 {[%mdl 4096] Endgame KB-KB} h6 27. Bd3 Bb7 28. Kf2 Kf8 29. g3 Ke7 30. Ke3 Kd6 31. Be2 f6 32. Bd3 Ke7 33. Kd2 Kd6 34. Ke3 Ke7 35. Kd2 Kd6 36. Ke3 {Av CentiPawn Loss W=-6/B=-5. Weighted=-11/ -10} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "10.6"] [White "Robson, Ray"] [Black "So, Wesley"] [Result "1/2-1/2"] [ECO "C65"] [WhiteElo "2673"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "59"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,59,16,24,13,18,8,10,7,22,12,10,0,0,0,0,0,0,0,0,0,0,-7,0,0,0,4,4,4,4,6, 11,0,0,0,0,0,0,-8,0,-8,-8,-8,-8,-8,-8,-8,0,-13,0,-4,0,-5]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 d5 6. exd5 {C65: Ruy Lopez: Berlin Defence (3...Nf6) , unusual lines and 4 0-0 Bc5.} Qxd5 {[#] Strongly threatening ...Bxf2+!The position is equal.} 7. Bc4 Qd6 8. b4 Bb6 9. a4 {Hoping for a5.} O-O 10. Nbd2 { [#] And now a5 would win.} Bf5 11. Ba3 {aiming for b5.} e4 $1 {[%CAl Re4f3]} ({ Weaker is} 11... Bxd3 12. b5 $16) 12. dxe4 Nxe4 13. Nxe4 Bxe4 14. Qxd6 cxd6 15. O-O-O Rac8 {...Ne5 is the strong threat.} 16. Bd5 Bxd5 17. Rxd5 Ne5 18. Nxe5 dxe5 19. Kb2 Rfd8 20. Rhd1 e4 {[#]} 21. R5d2 $146 ({Predecessor:} 21. Rxd8+ Rxd8 22. Rxd8+ Bxd8 23. Kb3 {1/2-1/2 (23) Verst,P (2363)-Kornev,A ICCF email 2017}) 21... Rxd2+ 22. Rxd2 $11 {[%mdl 4096] Endgame KRB-KRB} Rd8 23. Re2 f5 24. Kc2 Kf7 25. f3 exf3 26. gxf3 Re8 27. Rd2 Rd8 28. Re2 Re8 29. Rd2 Rd8 30. Re2 {Not much happened in this game. Av CentiPawn Loss W=-3/B=-2. Weighted=-4/ -1} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "11.1"] [White "So, Wesley"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "E32"] [WhiteElo "2770"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "60"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,60,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 d5 6. e5 Ne4 7. Bd3 c5 {The position is equal.} 8. Nf3 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} cxd4 9. Nxd4 Nd7 10. Bf4 Qh4 11. g3 Qh5 12. O-O g5 13. cxd5 Bxc3 14. bxc3 exd5 15. Bxe4 dxe4 16. e6 gxf4 17. exd7 Bxd7 18. Qxe4 { [%mdl 64] [#] Double Attack} fxg3 19. fxg3 b6 20. Nf5 Rae8 21. Qd5 Bxf5 $1 ({ Wrong is} 21... Re2 $2 {[#]} 22. Ne7+ $1 {[%mdl 512]} Rxe7 23. Qxh5 $18) 22. Rxf5 Qe2 23. Raf1 $40 {[%mdl 128] Hoping for Rg5+. White mounts an attack.} Qe3+ 24. R1f2 {[%CAl Rf5f7]} Qe1+ 25. Kg2 {Strongly threatening Rg5+.} Qe4+ 26. Qxe4 (26. Kh3 Qxd5 27. Rxd5 Re7 28. Rg5+ Kh8 29. a4 Re3 30. Rgf5 Kg7 {1/2-1/2 (30) So,W (2786)-Nakamura,H (2787) Saint Louis 2018}) 26... Rxe4 27. Rg5+ Kh8 { [#]} 28. Rgf5 $146 ({Predecessor:} 28. Rd5 Re7 29. a4 Rc8 30. Rf3 Rec7 31. a5 Kg7 32. axb6 axb6 33. Rg5+ Kf8 34. Rb5 {1/2-1/2 (34) Barath,M (2321)-Reuker,J (2377) Lueneburg 2018}) 28... Kg8 29. Rg5+ Kh8 30. Rgf5 Kg8 {An uneventful encounter. Av CentiPawn Loss W=0/B=0. Weighted=0/0} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "11.2"] [White "Lenderman, Aleksandr"] [Black "Robson, Ray"] [Result "1-0"] [ECO "E62"] [WhiteElo "2634"] [BlackElo "2673"] [Annotator "TA"] [PlyCount "117"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,117,42,43,42,42,41,43,41,58,22,20,26,20,-17,-22,-6,-3,-4,-11,-16,4,0, 21,17,56,0,25,29,51,9,26,26,20,18,43,51,144,137,147,143,121,90,143,107,107,106, 138,131,127,108,148,146,196,195,226,189,237,141,500,491,501,600,561,491,558, 552,556,551,548,553,627,486,472,500,562,543,530,499,628,616,531,507,449,442, 712,703,647,623,606,584,5540,5289,29978,29979,29979,29980,29980,29981,29980, 12369]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O e5 8. dxe5 dxe5 9. Bg5 h6 10. Qxd8 Rxd8 11. Bxf6 $1 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6.} Bxf6 12. Nd5 Kg7 13. Nxc7 {White is slightly better.} Rb8 14. Nd5 e4 15. Nd2 e3 16. fxe3 ( 16. Nxf6 $5 {[%CAl Rd2e4]} exd2 17. Nd5 $11) 16... Bxb2 17. Rab1 Ba3 {[#]} 18. Rb3 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 18. Nb3 Bf5 19. Rbd1 Rbc8 20. Nd4 Nxd4 21. exd4 Be6 22. Rd3 Bf8 23. Ne3 Bxc4 24. Nxc4 Rxc4 25. Bxb7 Rcxd4 26. Rfd1 Bc5 27. Rxd4 Rxd4 28. Rxd4 Bxd4+ 29. Kg2 {1/2-1/2 (29) Vidit,S (2726)-Dubov,D (2699) chess.com INT 2020}) 18... Bf8 19. Nf3 Bc5 20. Ne1 Bg4 21. Nd3 $36 {[%mdl 2048] White fights for an advantage.} Bf8 22. Bf3 ( 22. N5f4 $14) 22... Be6 23. Rc3 g5 24. Nf6 Kxf6 25. Bxc6+ $1 Kg7 {[#]} 26. Bd5 $1 {[%mdl 512]} Bxd5 27. cxd5 {Black must now prevent Rc7.} Rbc8 (27... Rd7 $14 ) 28. Rxc8 $16 Rxc8 {[%mdl 4096] Endgame KRB-KRN} 29. e4 f6 30. Kf2 Bd6 (30... Ba3 $142) 31. Rc1 Re8 32. Rc4 Kg6 33. Kf3 h5 34. h3 a6 35. a4 {[%CAl Ba2a4, Ba4a5][%mdl 32]} Kg7 36. a5 Kg6 37. e3 Kf7 38. Nc5 (38. g4 $18) 38... Bxc5 $2 { [%mdl 8192] Now Black is done in.} (38... Rb8 $16 39. Ne6 Ke7) 39. Rxc5 {KR-KR} Re7 40. h4 Kg6 41. Rc8 Rd7 42. hxg5 fxg5 43. Rg8+ Kf6 44. Re8 Kf7 45. Re6 Kg7 46. d6 Kf7 47. Rh6 Kg7 48. Rxh5 {[#] Hoping for e5.} Kg6 49. Kg4 {Threatens to win with e5.} Rxd6 50. Rxg5+ Kf7 51. Rd5 Rg6+ (51... Rc6 $142 52. Rd7+ Ke8 53. Rxb7 Rc5) 52. Kf5 $18 {aiming for Rd7+.} Rf6+ 53. Ke5 {Rd7+ is the strong threat.} Re6+ 54. Kd4 b6 55. Rf5+ Kg6 56. Kd5 {White mates.} Re8 57. axb6 a5 58. b7 a4 59. Rf1 {Av CentiPawn Loss W=-38/B=-67. Weighted=-35/-64} (59. Kc6 $142 a3 60. Ra5 Kf7 61. Ra7 Kg6 62. Rxa3 Kf6 63. Ra6 Kf7 64. Ra8) 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "11.3"] [White "Ramirez, Alejandro"] [Black "Xiong, Jeffery"] [Result "0-1"] [ECO "B50"] [WhiteElo "2567"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "76"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,76,-5,-4,0,0,-13,-1,0,5,0,0,-2,0,-10,-8,0,17,15,25,25,25,37,48,0,0, -25,-11,-25,147,136,144,149,157,66,48,62,56,31,71,-57,-57,-49,-49,-83,0,0,0,0, 0,-22,-21,-27,-8,-8,-8,-8,-4,-8,-8,-8,-8,-8,-8,-9,0,-8,0,-249,-252]} 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Qc2 Qc7 5. g3 b6 6. Bg2 {B50: Sicilian: 2...d6, Miscellaneous.} Bb7 7. d3 {[#]} c4 $146 ({Predecessor:} 7... g6 8. O-O Bg7 9. Re1 O-O 10. Be3 Nbd7 11. c4 e6 12. Nc3 a6 13. h3 Rfe8 {1-0 (31) Paravyan,D (2550)-Dobrov,V (2522) Moscow 2017}) 8. dxc4 {The position is equal.} Qxc4 9. Nbd2 Qc7 10. O-O Nbd7 11. Re1 g6 12. a4 Bg7 13. a5 Rc8 14. axb6 axb6 15. Nd4 Qb8 16. b3 O-O 17. Nc4 Rfe8 18. Ba3 Nxe4 $2 (18... d5 $11 19. exd5 Bxd5) 19. Rxe4 $16 ({Reject} 19. Bxe4 $6 d5 $11) 19... Bxe4 20. Qxe4 ({Stronger than} 20. Bxe4 Bxd4 21. cxd4 b5 $17) 20... Nc5 21. Qe3 (21. Qb1 $16) 21... Nxb3 $14 { [%mdl 64] [#] Remove Defender} 22. Nxb3 {Black must now prevent Nbd2.} Rxc4 23. Nd4 b5 {Strongly threatening ...b4!} 24. Bd5 (24. Bf1 $16) 24... Ra4 $1 $15 25. Bb3 Ra6 26. Nc2 e6 ({Better is} 26... Qa7 $17 27. Qxa7 Rxa7) 27. Re1 Qa7 28. Qxa7 Rxa7 29. Bxd6 Bxc3 30. Rb1 Rd8 31. Bf4 Rad7 {aiming for ...Rd1+.} 32. Na3 b4 33. Nc4 Ra7 34. Kf1 Ra1 $36 {[%mdl 2048] Black has some pressure.} 35. Rxa1 Bxa1 36. Ke2 Bc3 37. Ne5 Ra8 {Threatens to win with ...g5!} 38. Kd3 $2 {[#]} ( 38. Nd3 $11) 38... g5 $1 {[%mdl 512] Black used his chance. Av CentiPawn Loss W=-20/B=-11. Weighted=-31/-11} 0-1 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "11.4"] [White "Liang, Awonder"] [Black "Moradiabadi, Elshan"] [Result "1-0"] [ECO "C53"] [WhiteElo "2592"] [BlackElo "2555"] [Annotator "TA"] [PlyCount "71"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,71,16,13,13,0,14,17,10,5,17,0,7,-27,-19,-25,8,13,66,0,39,33,48,56,54, 39,60,0,0,6,23,43,274,221,247,249,252,256,349,218,250,227,370,367,359,364,420, 383,408,373,409,409,357,392,397,354,363,364,365,375,1184,1016]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. O-O d6 7. Nbd2 a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. h3 h6 9. Re1 {9.Bb5 might become the main line.} Be6 {The position is equal.} 10. b3 Re8 {[#]} 11. Bb2 $146 ({ Predecessor:} 11. Bb5 Bd7 12. Bb2 Nh5 13. d4 Ba7 14. Nf1 Qf6 15. Ne3 Qg6 16. Nh4 Qg5 17. Nf3 Qg6 18. Nh4 {1/2-1/2 (18) Daroczy,S (2101)-Mytsko,V (2128) ICCF email 2017}) 11... Ba7 12. Qc2 Nh5 13. d4 Nf4 14. d5 {[%mdl 64] Double Attack} Bxh3 $1 15. gxh3 (15. g3 $1 $14) 15... Nxh3+ 16. Kh2 Nxf2 17. dxc6 Qc8 $1 {[%CAl Rc8h3] ( -> ...Qh3+)} 18. Ng1 $1 {Threatens to win with cxb7.} bxc6 19. Ndf3 (19. Re2 $1 $14 Qg4 20. Ndf3) 19... d5 $11 (19... Qg4 $6 20. Re2 $18) 20. exd5 {Re2 is the strong threat.} Qg4 21. Re2 (21. Rxe5 $2 Qf4+ 22. Kg2 Rxe5 $19) (21. Nxe5 $2 Qh5+ 22. Kg2 Qg5+ 23. Kf1 Rxe5 $19) 21... Qh5+ $2 {This costs Black the game.} ({Better is} 21... e4 $1 $14 22. Rxf2 exf3) 22. Kg2 $18 e4 23. Rxf2 Bxf2 24. Qxf2 {Hoping for Nd4.} ({Much less strong is} 24. Kxf2 $6 cxd5 25. Bf1 Re6 $16) 24... exf3+ 25. Nxf3 {And now Qg3 would win.} Re4 { [#] Strongly threatening ...Rg4+.} 26. Rg1 $1 {[%CAl Ba1g1,Bg1g2,Bg2f2][%mdl 32]} ({Inferior is} 26. dxc6 Rg4+ 27. Kf1 Qh3+ 28. Ke2 Rg2 $17) 26... cxd5 ( 26... a4 {was necessary.} 27. Bd3 (27. dxc6 axb3 28. Bxb3 Rae8 $16) 27... Rg4+ 28. Kf1 Rxg1+ 29. Kxg1 axb3) 27. Bd3 Rg4+ 28. Kf1 Rf4 29. Be2 Re8 {[#] Black wants to play ...Qf5.} 30. Qg3 $1 {[%csl Gg1][%CAl Rg3g7]} Qe5 {[%csl Ge8] [%CAl Re5e2]} 31. Rg2 g5 {intending ...Qe3.} 32. Bc1 Rf6 33. Bd2 Qf5 {Black hopes to continue with ...Qb1+.} 34. Rf2 Qb1+ 35. Kg2 Qxa2 $2 (35... a4 36. bxa4 c5) 36. Bd3 {Av CentiPawn Loss W=-21/B=-57. Weighted=-23/-99} 1-0 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "11.5"] [White "Shankland, Sam"] [Black "Sevian, Samuel"] [Result "1/2-1/2"] [ECO "A20"] [WhiteElo "2691"] [BlackElo "2660"] [Annotator "TA"] [PlyCount "134"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,134,16,6,0,3,7,3,0,20,10,19,22,8,12,23,-4,24,0,131,137,156,139,195, 199,193,195,183,193,202,147,145,118,116,116,116,122,150,127,126,114,138,133, 136,138,151,142,143,141,150,111,112,113,117,113,112,100,115,27,22,27,25,8,8,8, 22,6,18,0,0,0,0,0,0,0,35,0,-2,-8,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,-10,0,0,0,-15, -8,-8,-9,-12,-8,-49,-51,-54,-34,-54,-31,-29,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8] } 1. c4 e5 2. g3 c6 3. Nf3 e4 4. Nd4 d5 5. cxd5 Qxd5 6. Nc2 {A20: English Opening: 1...e5.} Nf6 7. Nc3 Qe5 8. Bg2 Na6 9. Rb1 Nb4 {[#]} 10. O-O $146 ({ Predecessor:} 10. Nxb4 Bxb4 11. Qa4 a5 12. a3 Bxc3 13. dxc3 O-O 14. Be3 Bf5 15. Rd1 Qe6 16. O-O {1/2-1/2 (37) Ganguly,S (2658)-Yu,Y (2763) Douglas 2019}) 10... Nxc2 11. Qxc2 {[%CAl Rc3e4]} Bf5 12. Qb3 Qc7 13. Qa4 {[%CAl Rc3e4] [#]} Qe5 { [#]} (13... e3 $1 $11 {[%mdl 512] keeps the balance.}) 14. d3 $1 $16 {[%mdl 512]} Bc5 (14... exd3 15. Bxc6+) 15. dxe4 Bg6 (15... Be6 $16 {was worth a try.} 16. Bf4 Qd4) 16. Bf4 $18 Qd4 17. Rbd1 Qxa4 18. Nxa4 Be7 19. Nc3 Nd7 20. Bd6 Bxd6 21. Rxd6 Ke7 22. Rfd1 Nb6 23. f4 f6 24. Bh3 Rhe8 25. Kf2 Bf7 26. b3 Kf8 27. Bd7 Re7 28. Bf5 g6 29. Rd8+ ({Don't play} 29. Rxf6 $6 gxf5 30. exf5 (30. Rxf5 Kg8 $11) 30... Nd7 $14) 29... Re8 30. Rxa8 Rxa8 31. Bg4 a5 32. Rd4 Ke7 33. b4 (33. h4 $16) 33... Bc4 $11 34. bxa5 Rxa5 35. a4 h5 36. Bh3 Ke8 37. Rd6 Ke7 38. e5 fxe5 39. Rxg6 exf4 40. gxf4 Nxa4 41. Ne4 Bd5 42. Nd6 Nc3 43. Bf5 Nd1+ 44. Kg3 Ne3 45. Bd3 c5 46. Nxb7 Bxb7 47. Rg7+ Kd6 {...Bd5 is the strong threat. } 48. Rxb7 {[%mdl 4096] Endgame KRB-KRN} c4 49. Be4 Ra3 50. Kh4 c3 51. Kg5 c2 52. Rb6+ Kd7 53. Rc6 Ra4 54. Rxc2 $1 {Hoping for Bc6+.} Rxe4 {KRN-KR} 55. Rc5 Ng2 56. Re5 Rxf4 {Threatens to win with ...h4.} 57. Kxh5 Kd6 58. Re8 Rf2 59. Kg4 Kd7 60. Re4 {Strongly threatening Kg3.The position is equal.} Rf1 61. h4 Rh1 62. Kg5 {[#]} Nxh4 $1 {[%mdl 512]} 63. Rxh4 Rxh4 64. Kxh4 Ke6 65. Kg4 Ke5 66. Kf3 {Ke3 would kill now.} Kf5 67. Ke3 $1 {[%CAl Re3d4] Threatening mate with Kd4.} Ke5 {Black escapes into a draw. Av CentiPawn Loss W=-8/B=-8. Weighted=-9/-8} 1/2-1/2 [Event "USA-ch 2020"] [Site "Saint Louis"] [Date "2020.10.29"] [Round "11.6"] [White "Swiercz, Dariusz"] [Black "Dominguez Perez, Leinier"] [Result "0-1"] [ECO "C67"] [WhiteElo "2649"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "86"] [EventDate "2020.10.26"] [EventType "tourn"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,86,19,21,0,0,0,8,0,0,0,0,0,0,0,0,-12,0,-2,-4,-40,-41,-78,-49,-135,-39, -57,-21,-135,-122,-107,-116,-162,-166,-174,-177,-179,-178,-249,-217,-274,-187, -274,-239,-207,-213,-571,-567,-775,-632,-1445,-976,-959,-944,-935,-904,-892, -834,-826,-823,-790,-728,-777,-775,-776,-640,-661,-669,-664,-659,-651,-669, -635,-651,-29965,-29966,-29961,-29965,-10112,-8847]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. a4 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} Be7 7. Nc3 a6 8. Bf1 {[#] The position is equal.} f6 $146 ({Predecessor:} 8... e4 9. Nxe4 Nxe4 10. Rxe4 d5 11. Re1 d4 12. Bd3 O-O 13. Be4 Be6 14. d3 Bd5 { 1/2-1/2 (30) Karjakin,S (2748)-So,W (2754) Zagreb 2019}) 9. d4 {[%CAl Rd4e5]} Nf7 $1 10. Bc4 d6 11. Nd5 O-O 12. c3 Kh8 13. b4 Be6 14. Bb3 Qd7 15. Rb1 Bd8 16. c4 (16. h3 $15) 16... Ne7 ({Black should try} 16... Bg4 $17 {And now ...Nxd4 would win.} 17. Ne3 Bxf3 18. Qxf3 Ng5) 17. Ne3 Nh6 18. c5 {White is on the road to losing.} (18. Bc2 $11) 18... Bxb3 $17 19. Qxb3 {[#]} e4 $1 {[%CAl Re4f3]} 20. Nd2 d5 21. f4 c6 22. Ndf1 Bc7 23. g3 (23. Nc2 $142) 23... g5 $19 24. Ng2 Nhf5 25. Qc3 (25. Qd1 $142) 25... Rg8 26. fxg5 fxg5 27. Nfe3 $2 (27. Rb2 {is tougher.}) 27... Raf8 {...Nxg3! is the strong threat.} 28. Rb2 {[#]} Nh4 $1 {[%mdl 512]} 29. gxh4 gxh4 30. Nf1 h3 {[%mdl 64] Pin} 31. Ng3 hxg2 32. Rxg2 Nf5 {Hoping for ...Nxg3.} 33. Rxe4 Nxg3 34. hxg3 dxe4 35. d5+ Qg7 36. Bb2 Bd8 {White must now prevent ...Bf6!} 37. Qxg7+ Rxg7 38. Bxg7+ Kxg7 39. dxc6 bxc6 {KRB-KR} 40. Re2 Re8 41. Rd2 e3 42. Re2 Bf6 43. Kg2 Bc3 {Av CentiPawn Loss W=446/B=-57. Weighted=320/-81} 0-1