[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "1.1"]
[White "Yoo, Christopher Woojin"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2455"]
[BlackElo "2660"]
[Annotator "TA"]
[PlyCount "136"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,136,10,12,2,12,18,24,15,33,24,27,10,10,14,18,9,17,0,35,36,67,58,67,61,75,62,69,66,93,85,87,56,100,98,97,102,102,104,111,58,67,67,78,65,78,55,27,35,46,46,69,31,42,30,119,72,235,66,79,56,77,16,15,19,17,18,89,89,86,81,87,59,59,63,63,52,52,23,23,23,110,121,114,118,120,135,111,104,104,104,104,104,104,104,104,0,104,104,104,104,104,104,104,41,41,41,104,104,104,104,104,104,104,104,104,104,104,104,22,0,65,0,104,104,104,104,104,0,104]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Bb4 5. Qb3 c5 6. Bg5 {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} Nc6 7. dxc5 dxc4 8. Qxc4 {White has an edge.} Qa5 9. Bxf6 gxf6 10. Rc1 {[%cal Ba1c1,Bc1c2,Bc2b2][%mdl 32]} Qxc5 11. Qh4 Ke7 12. g3 Bxc3+ 13. bxc3 Qa3 {[%cal Ra3c1]} 14. Rc2 e5 15. Bh3 Bxh3 16. Qxh3 Qa4 17. Rb2 (17. Rd2 $6 Rhd8 $11) 17... b6 18. Nh4 ({Reject} 18. Rd2 Rhd8 $11) 18... h5 19. O-O Rad8 20. Qg2 Qc4 {[#]} 21. Qf3 $146 ({Predecessor:} 21. Nf5+ Kf8 22. Qf3 Ne7 23. Nxe7 Kxe7 24. h4 Ke6 25. a3 f5 26. Rb4 Qd5 27. Kg2 {½-½ (62) Brynell,S (2424)-Hagen,A (2396) Denmark 2016}) 21... Qe6 22. e4 Qg4 {With the idea ...Qxf3.} 23. Qe3 Qd7 24. f4 (24. c4 $16) 24... Kf8 $14 25. Rbf2 {fxe5 is the strong threat.} Qd3 26. Qe1 Rd6 27. fxe5 Nxe5 28. Rxf6 Rxf6 29. Rxf6 {Hoping for Rf5.} Ke7 30. Rf5 (30. Rf1 $5 {[%cal Re1c1]}) 30... Ke6 $1 31. Rf1 Nc4 (31... Rc8 $11) 32. Nf5 Qd2 $2 (32... Nd2 $16 33. Nd4+ Ke7) 33. Nd4+ $2 (33. Qb1 $18 Qxc3 34. Qd1 (34. Qb5 Ne3 $16)) 33... Ke7 34. Nc6+ Kd6 {White must now prevent ...Qxe1.} 35. Nxa7 (35. Qxd2+ $16 Nxd2 36. Rf6+ Kc5 37. Nxa7 Nxe4 38. Rxf7) 35... Qxe1 $11 36. Rxe1 $16 {[%mdl 4096] Endgame KRN-KRN} Ra8 37. Nb5+ Ke5 (37... Kc5 $11 38. Nd4 Rxa2) 38. Re2 Ra5 39. Nd4 {Strongly threatening Nc6+.} Ra3 40. Nb3 Nd6 41. Nd2 Rxc3 42. Kf2 Nc4 43. Nxc4+ Rxc4 $14 {KR-KR} 44. Kf3 f5 (44... Rb4 $11) 45. exf5+ $16 Kxf5 46. Rb2 Rc3+ {[#]} 47. Kg2 $1 Rc6 48. h4 Kg6 49. a4 Rf6 50. Rb4 Kh6 51. Rf4 Rc6 52. Rb4 Rf6 $1 53. Rb5 Kg6 54. Rb2 Kh6 55. Rf2 Rc6 {[#]} 56. Rf4 (56. Kh3 $1 $16) 56... Rc2+ $1 $14 57. Kh3 {And now Rf6+ would win.} Rc6 ({Black should try} 57... Ra2 $14) 58. Rf7 Kg6 59. Rb7 Rf6 60. Kg2 Kh6 61. Rb8 Kg6 62. Kh3 Rc6 63. Rg8+ Kh6 64. Rb8 Kg6 65. Kg2 Rf6 $1 66. Rc8 Kh6 67. Rc4 Kg6 68. Rb4 Kh6 $1 {Av CentiPawn Loss W=-9/B=-16. Weighted=-12/-19} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "1.2"]
[White "Tiglon, Bryce"]
[Black "Sheng, Joshua"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2393"]
[BlackElo "2474"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,108,17,30,19,57,55,40,41,45,37,67,58,129,143,222,223,254,254,243,231,234,-59,-32,-103,-99,-79,-69,-121,-120,-163,-113,-108,-100,-132,-75,-78,-3,-3,-3,-1,0,0,0,-16,-17,-127,-18,-45,-44,-94,0,-14,-22,-103,-93,-268,-272,-257,-262,-267,-274,-277,-269,-264,-277,-258,-225,-654,-581,-948,-851,-1175,-1171,-1321,-1302,-1316,-1229,-1734,-1704,-29976,-1623,-29982,-29983,-29983,-29977,-29977,-29978,-29972,-29978,-29981,-29982,-29982,-29983,-29984,-29983,-29985,-29986]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. c3 h6 7. O-O Nd7 8. a4 {B12: Caro-Kann: Advance Variation.} a5 9. b3 g5 10. Na3 {[#] White is slightly better.} Bg7 $146 ({Predecessor:} 10... Qb6 11. c4 Bg7 12. cxd5 exd5 13. Bd3 Bxd3 14. Qxd3 Qa6 15. Qd2 f6 16. e6 Nf8 {1-0 (55) Steiger,W (2372)-Ballow,J (2389) ICCF email 2012}) 11. Nc2 O-O 12. Ne3 Bg6 (12... Be4 $14) 13. h4 $1 $16 c5 (13... gxh4 $16 14. Nxh4 c5) 14. hxg5 $18 hxg5 15. Nxg5 cxd4 16. cxd4 Nc6 17. Nh3 $2 {[#]} (17. f4 $18) 17... Nxd4 $1 $15 {[%mdl 512]} 18. Qxd4 (18. Ng4 $15 Nxe5 19. Bg5) 18... Bxe5 $17 19. Qg4 {Black must now prevent Ra2.} Bxa1 20. Ba3 (20. Nf4 $15 Nf6 21. Qh3) 20... Bg7 21. Bxf8 Qxf8 22. Nf4 Ne5 23. Qg3 Rc8 (23... Qb4 $142 24. Bg4 Qe4) 24. Ng4 {[#] With the idea Nxe5.} Qb4 (24... Nd7 $1 $17) 25. Nxd5 $1 $11 exd5 26. Nxe5 Rc3 27. Qg5 Be4 $36 {[%mdl 2048] ...f6 is the strong threat. Black has good play.} 28. Bg4 Qd6 29. Nf3 {[#]} (29. Nd7 $11 {was the only way to keep the balance.}) 29... Kf8 ({Don't do} 29... Rxb3 30. Nd2 $15) ({Black should try} 29... Qf6 $1 $17 {[%cal Rc3f3] Threatens to win with ...Rxf3.} 30. Qxf6 Bxf6) 30. Rd1 Qf6 {[%cal Rc3f3] aiming for ...Rxf3.} 31. Qd2 Qg6 (31... Bh6 $17 32. Qb2 Kg8) 32. Qf4 Bf6 33. Kf1 (33. Nd4 $1 $11) 33... Kg7 34. Nd2 $2 (34. Nd4 $17 {was worth a try.}) 34... Bc2 $19 35. Re1 Qg5 ({Less strong is} 35... Bxb3 36. Nxb3 Rxb3 37. Bd7 $17) 36. Qxg5+ Bxg5 37. Nf3 Bf6 38. Nd2 Rd3 39. Re2 {intending Bf5.} Bc3 40. Ke1 $2 (40. Bf5 Bxd2 41. g4) 40... Bxb3 41. Bf5 Rd4 42. f3 Bxa4 43. Bb1 b5 {[%cal Bb7b5,Bb5b4,Bb4b3][%mdl 32]} 44. g4 b4 45. g5 b3 46. g6 fxg6 (46... Bb5 $142 47. Rh2 a4 48. Rh7+ Kg8 49. gxf7+ Kf8 50. Rh8+ Kxf7 51. Rh7+ Kf6 52. Rc7 Bxd2+ 53. Kf2 a3 54. Ra7 Ra4 55. Rxa4 Bxa4 56. Ke2 Bf4 57. Bd3 a2 58. Kf1 b2 59. Kg1 b1=Q+ {[%mdl 64] Double Attack} 60. Kf2 a1=Q 61. Bxb1 Qxb1 62. Kg2 Qe1 63. Kh3 Qg3#) 47. Rg2 Rxd2 {Black mates.} 48. Rxd2 Bxd2+ 49. Kxd2 {[%mdl 4096] Endgame KB-KB} Bb5 50. Kc3 Bc4 51. f4 Kf6 52. Kb2 d4 53. Be4 a4 54. Ka3 d3 {Black used his chance. Av CentiPawn Loss W=-104/B=-43. Weighted=-105/-37} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "1.3"]
[White "Burke, John M"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "B04"]
[WhiteElo "2538"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "138"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,138,48,53,62,27,30,0,9,-6,-6,-6,0,0,0,0,13,0,0,0,8,4,11,16,60,55,81,72,77,81,93,94,137,59,60,41,57,0,28,0,0,-38,-54,-42,-29,-50,-51,-157,-76,-126,-122,-121,-124,-117,-118,-120,-112,-115,-89,-97,-80,-199,-189,-147,-161,-181,-187,-192,-127,-208,-196,-209,-168,-216,-198,-191,-180,-169,-183,-248,-242,-258,-235,-243,-243,-222,-221,-509,-510,-495,0,0,0,-502,-487,-488,-483,-808,-820,-797,-787,-741,-749,-663,-646,-1384,-1317,-1329,-1287,-1244,-1274,-1145,-1012,-866,-1033,-1519,-1524,-1976,-1752,-29978,-29978,-29987,-29986,-29987,-29988,-29989,-29990]} 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 g6 6. Bc4 c6 {6...Be6 might become the main line. Played by Magnus Carlsen in September 2020.} 7. O-O Bg7 8. Bb3 O-O {B04: Alekhine's Defence: 4 Nf3.} 9. Nd2 {[%cal Bb1d2,Bd2f3,Bf3e5][%mdl 32]} a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 10. a3 Nd7 {The position is equal.} 11. Ndf3 Nxe5 12. Nxe5 a4 13. Ba2 Be6 {[#]} 14. Re1 $146 ({Predecessor:} 14. Qe2 Qc7 15. Bxd5 Bxd5 16. Bf4 Qc8 17. Rfe1 Qf5 18. Qd2 g5 19. Bg3 b5 20. Rad1 {0-1 (41) Braunton,R-Clifford,J BFCC corr 2001}) 14... Qc8 15. Qf3 Nc7 16. c4 Rd8 17. Qe3 Ne8 18. Bd2 Nd6 19. d5 cxd5 20. cxd5 Bf5 21. Rac1 Qb8 22. Bc3 Qa7 {Threatening ...Qxe3.} 23. Bd4 ({White should try} 23. Qf4 $16) 23... Qa6 $14 24. Rc7 {aiming for Nxf7!} Re8 $1 25. Rcc1 (25. Bc3 $14) 25... Rac8 26. h3 Qb5 27. f3 Bc2 28. Bc3 Bb3 29. Bxb3 Qxb3 30. Red1 (30. Rcd1 $15) 30... Red8 (30... Nb5 $142 31. f4 Nxc3 32. bxc3 Red8) 31. Rd3 Nf5 $36 {[%mdl 2048] White is under strong pressure.} 32. Qe4 Ng3 $1 {[%cal Rg3e4]} ({But not} 32... Qb6+ $6 33. Kh2 $15) 33. Qe1 Rxd5 34. Rxd5 Qxd5 35. Nxf7 Kxf7 (35... Rxc3 {feels hotter.} 36. bxc3 Nh5 37. Rd1 Qc5+ 38. Qf2 Qxf2+ 39. Kxf2 Kxf7 40. Rb1 Nf4) 36. Qxg3 Bxc3 37. Rxc3 (37. Qf4+ $17 Qf5 38. Qxf5+ gxf5 39. Kf1) 37... Rxc3 $19 38. bxc3 $17 {[%mdl 4096] Endgame KQ-KQ} Qc5+ 39. Kh1 Qxa3 {Hoping for ...Qc1+.} 40. Qf4+ Ke6 $1 41. Qe4+ (41. Qc4+ $17 Kd7 42. Qd5+ Kc7 43. Qc4+ Kd6 44. Qd4+ Kc7 45. Qf4+ Kd7 46. Qd4+ Kc7 47. Qf4+ Kc6 48. Qe4+ Kd6 49. Qd4+ Kc7) 41... Kd6 $1 $19 42. Qd4+ Kc6 43. Qe4+ Kb6 44. Qd4+ Ka6 {And now ...Qb3 would win.} 45. Qc4+ {[#]} Ka7 $1 46. Qd4+ {[#]} (46. Qb5 $142) 46... b6 $1 47. Qd7+ Ka6 48. Qc6 {If White can now play c4 this consolidates a bit.} Ka5 49. Qa8+ Kb5 50. Qd5+ $2 (50. Qe8+ Kc4 51. Qc6+ Kd3 52. Qxb6) 50... Qc5 51. Qd7+ Ka5 52. Qa7+ Kb5 53. Qd7+ {White is on the road to losing.} Qc6 54. Qd3+ Ka5 55. Qd4 (55. Qc2 $142 Qc4 56. Qc1) 55... Qc5 {Strongly threatening ...Qxd4.} 56. Qd7 a3 57. Qa7+ Kb5 58. Qd7+ Kc4 59. Qe6+ Kxc3 60. Qe1+ Kb3 61. Qb1+ Ka4 62. Qd1+ Ka5 63. Qd2+ Ka6 64. Qd3+ b5 {( -> ...a2)} 65. Qe2 e5 66. h4 Qd4 {Black mates.} 67. Qc2 Qxh4+ 68. Kg1 Qc4 69. Qd1 Qd4+ {Av CentiPawn Loss W=-75/B=-4. Weighted=-66/-12} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "1.4"]
[White "Shen, Christopher"]
[Black "Balakrishnan, Praveen"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "2354"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,114,10,9,0,0,-8,13,0,-8,-23,0,0,58,2,3,0,35,40,46,0,0,0,11,0,86,-60,0,0,0,0,7,0,0,0,0,0,127,0,0,-422,-406,-405,-283,-283,-283,-275,-265,-278,-252,-287,-296,-279,-283,-356,-344,-437,-437,-472,-452,-717,-697,-671,-665,-864,-592,-862,-816,-836,-825,-829,-810,-1001,-909,-891,-795,-786,-785,-5289,-995,-5117,-596,-1136,-650,-5690,-5639,-29985,-29985,-29989,-29990,-29993,-29994,-29996,-29993]} 1. Nf3 c5 2. c4 Nf6 3. g3 b6 4. Bg2 Bb7 5. Nc3 e6 6. O-O Be7 7. b3 O-O 8. Bb2 d5 9. e3 dxc4 10. bxc4 Qc8 11. Qe2 Nc6 12. d3 Rd8 13. Rad1 {[#] A14: English Opening: 1...e6 with b3 by White.} a6 $146 ({Predecessor:} 13... Ne8 14. Ne1 a6 15. Ba1 Na5 16. f4 Bxg2 17. Nxg2 Rb8 18. f5 exf5 19. Nd5 Bf8 {1-0 (60) Gonzales,J (2383)-Nabuurs,M (2248) Bruges 2018}) 14. Ba1 Rb8 15. Rb1 {The position is equal.} Ba8 16. Ne1 Qc7 17. f4 Na7 (17... b5 $11) 18. g4 ({White should try} 18. Bxa8 $14 Rxa8 19. g4) 18... Bxg2 $11 19. Nxg2 b5 20. g5 Ne8 21. Ne4 bxc4 22. dxc4 Qc6 23. Ng3 Qa4 (23... Rxb1 $11 {remains equal.} 24. Rxb1 Qa4) 24. h4 ({White should play} 24. Rxb8 $16 Rxb8 25. f5 exf5 26. Nxf5) 24... Nd6 (24... Rxb1 $1 $15 25. Rxb1 Nd6) 25. Rbc1 Rb4 $36 {[%cal Rb4c4][%mdl 2048] Black is pushing.} 26. f5 {Hoping for fxe6.} exf5 27. Nxf5 Nxf5 28. Rxf5 Nc8 29. Nf4 Nb6 (29... Bf8 $11) 30. Qh5 (30. Rxf7 $1 $16 Bf8 31. Rf1 Kxf7 32. g6+ $1 {[%mdl 512]} hxg6 33. Qg4) 30... Qe8 $1 ({Inferior is} 30... g6 {[#]} 31. Qxh7+ $1 {[%mdl 512]} Kxh7 32. Rxf7+ Kg8 33. Rg7+ Kf8 34. Nxg6+ Ke8 35. Rxe7#) 31. Nd5 $2 {[%mdl 8192] Black converts the advantage convincingly.} (31. Rf1 $1 $11 Bf8 32. Re5) 31... Nxd5 $19 32. Rxd5 {[#]} Rxc4 $1 {[%mdl 576] Remove Defender} 33. Rxc4 Rxd5 34. Qf3 Qd7 {Threatens to win with ...Rd1+.} 35. Rc1 Bf8 36. Bc3 Rd3 37. Be5 Qe6 38. Bf4 Qxa2 39. Qe4 Qe2 40. Rf1 Qg4+ 41. Kh1 (41. Qg2 $142 Qe6 42. Qe2) 41... Qxh4+ 42. Kg1 Qg4+ 43. Kh1 Rd2 44. Qa8 Qe6 45. Qf3 c4 46. Rc1 Rd3 47. Kg1 c3 48. Rc2 Qb3 49. Qe2 Qd5 {Strongly threatening ...Rd1+.} 50. Rc1 Bc5 51. Qg4 Qe6 52. Qf3 Bxe3+ 53. Kh1 {Qa8+ would kill now.} g6 54. Re1 c2 {Black mates.} 55. Bxe3 {[#]} Rxe3 $1 {[%mdl 512]} 56. Qa8+ (56. Rxe3 c1=Q+) 56... Kg7 57. Rc1 Re1+ {Av CentiPawn Loss W=-145/B=-82. Weighted=-157/-86} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "1.5"]
[White "Checa, Nicolas"]
[Black "Jacobson, Brandon"]
[Result "1/2-1/2"]
[ECO "A09"]
[WhiteElo "2527"]
[BlackElo "2487"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,66,-18,-14,-13,-18,-34,-37,-70,-75,-62,-50,-39,-7,-1,33,34,36,28,36,35,24,26,30,28,41,15,31,42,44,16,25,0,0,0,12,14,14,16,7,0,23,22,27,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. c4 d4 3. g3 Nc6 4. Bg2 e5 5. d3 Bb4+ 6. Bd2 a5 7. O-O {A09: Réti Opening: 1 Nf3 d5 2 c4.} Nf6 8. Bg5 O-O 9. Nbd2 {Black is slightly better.} Be7 10. a3 {[#]} Be6 $146 ({Predecessor:} 10... a4 11. Ne1 h6 12. Bxf6 Bxf6 13. Nc2 Be7 14. b4 axb3 15. Nxb3 Na5 16. Nd2 Be6 17. Rb1 {0-1 (94) Maghsoodloo,P (2666)-Bosiocic,M (2618) Bandar e Anzali 2019}) 11. Qb3 Ra7 12. e3 Nd7 (12... a4 {feels hotter.} 13. Qc2 h6 14. Bxf6 Bxf6 15. exd4 Nxd4 16. Nxd4 Qxd4 17. Rfe1 Rd8) 13. Bxe7 Qxe7 14. exd4 Nxd4 15. Nxd4 exd4 16. Rfe1 Nc5 17. Qc2 a4 18. Ne4 c6 19. Nxc5 Qxc5 20. Qd2 b5 21. cxb5 Qxb5 22. Rac1 c5 23. Re5 Rc7 24. Bd5 Bxd5 25. Rxd5 Rfc8 26. Rc4 Qb3 27. Qc2 (27. h4 {keeps more tension.} h6 28. Qe2 Kh8 29. Re5 Kh7 30. Kh2) 27... Qxc2 {The position is equal.} 28. Rxc2 $11 {[%mdl 4096] Endgame KRR-KRR} g6 29. Rd6 Rb8 30. Kg2 Rb3 31. Rxd4 cxd4 32. Rxc7 Rxb2 33. Rc4 Rb3 {[%mdl 64] Double Attack. Av CentiPawn Loss W=-4/B=-5. Weighted=-3/-6} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "2.1"]
[White "Sevian, Samuel"]
[Black "Jacobson, Brandon"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "2660"]
[BlackElo "2487"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,106,33,52,32,41,24,31,27,20,15,27,21,41,34,31,18,38,12,36,30,48,45,52,52,117,33,56,33,26,33,33,26,41,0,23,31,34,-50,0,-115,-123,-334,-325,-304,-308,-346,-349,-334,-331,-334,-331,-302,-324,-409,-403,-400,-391,-391,-398,-410,-269,-354,-174,-452,-420,-529,-497,-491,-481,-2225,-2207,-1722,-725,-724,-711,-677,-697,-752,-726,-789,-745,-774,-767,-1691,-1610,-1454,-1460,-1358,-1313,-29977,-29978,-29980,-29981,-29989,-29990,-29990,-29991,-29991,-29992]} 1. Nf3 d5 2. g3 Nd7 3. d4 Nb6 4. Bg2 Bf5 5. O-O Nf6 6. b3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} c6 7. Bb2 h6 8. Nbd2 {White is slightly better.} e6 9. c4 {[#]} a5 $146 ({Predecessor:} 9... Be7 10. Rc1 O-O 11. e3 a5 12. Qe2 Ne4 13. Ne5 Nxd2 14. Qxd2 a4 15. c5 Nd7 {½-½ (55) Svidler,P (2723)-Sevian,S (2660) chess.com INT 2020}) 10. Ne5 Be7 11. f3 $36 {[%mdl 2048] White has good play.} O-O 12. e4 Bh7 $1 13. Kh1 Bb4 14. c5 Bxd2 15. Qxd2 Nbd7 16. Nxd7 Qxd7 ({Black should play} 16... Nxd7 $14 17. Bc3 Bg6) 17. Qe3 (17. e5 $16 Ne8 18. a4) 17... a4 18. b4 a3 19. Bc3 (19. Bxa3 dxe4 20. Bb2 Qd5 $15) 19... Ne8 20. e5 Nc7 21. g4 Nb5 22. Be1 Qe7 23. Bg3 ({White should try} 23. Rd1 $14) 23... Ra4 (23... Qg5 $5 {[%cal Rg5e3]} 24. Bf4 Qg6 $15) 24. Qd2 (24. Qb3 $11 {remains equal.} Rfa8 25. Rfd1) 24... Qg5 $17 25. Qd1 $2 {This move loses the game for White.} (25. Bf4 $17 Qg6 26. Rf2) 25... Rxb4 $19 26. f4 Qd8 27. f5 Rxd4 28. Qf3 {[#]} h5 $1 29. f6 (29. gxh5 Bxf5) 29... Be4 ({Don't do} 29... Rxg4 30. fxg7 Kxg7 31. h3 $19) ({Less strong is} 29... hxg4 30. Qe3 $17) 30. Qf2 {White wants to play Bxe4.} Bxg2+ ({Wrong is} 30... hxg4 $2 31. Bxe4 Rxe4 32. fxg7 $18) 31. Kxg2 Rxg4 32. h3 Rg6 {And now ...h4 would win.} 33. Kh2 Nc3 {Strongly threatening ...Ne4.} 34. fxg7 Rxg7 35. Bh4 Ne4 (35... Qc7 $142 {Hoping for ...f5.} 36. Bf6 Ne4) 36. Qf4 $2 (36. Bxd8 Nxf2 37. Bf6) 36... Qa5 37. Rad1 {If White can now play Rg1 this consolidates a bit.} Qc3 38. Rg1 {White hopes to continue with Rxg7+.} Rg6 39. Qh6 (39. Rde1 $142 Qc2+ 40. Kh1) 39... Qc2+ {[%mdl 64] [#] Double Attack} 40. Kh1 Qxd1 {[%csl Gg6][%cal Rd1g1]} 41. Qxf8+ Kxf8 {[%csl Gg6][%cal Rd1g1]} 42. Rxd1 Nxc5 {[%mdl 4096] Endgame KRB-KRN} 43. Rb1 b5 44. Rc1 Nd3 45. Rxc6 Nxe5 46. Rb6 Nf3 {[%csl Gf3][%cal Rg6g1]} 47. Bf2 e5 48. Rxb5 d4 49. Rb3 e4 {Black mates.} 50. h4 e3 51. Bxe3 dxe3 {[%csl Gf3][%cal Rg6g1]} 52. Rb8+ Kg7 {[%csl Gf3][%cal Rg6g1]} 53. Rg8+ Kf6 {Av CentiPawn Loss W=-76/B=-38. Weighted=-68/-60} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "2.2"]
[White "Balakrishnan, Praveen"]
[Black "Checa, Nicolas"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2485"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,77,52,80,68,57,57,57,49,62,3,3,7,3,0,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,12,17,8,14,10,8,15,13,57,43,93,101,118,79,110,110,117,61,82,54,34,62,29997,29998]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 b6 7. Qg4 Ng6 8. h4 h5 9. Qd1 Ba6 10. Bxa6 {10.Bg5 is not played anymore.} Nxa6 11. Bg5 Qd7 12. Ne2 {C16: French: 3 Nc3 Bb4 4 e5: Lines without ...c5.} Ne7 13. Nf4 g6 14. Bf6 {White is slightly better.} Rg8 {[#]} 15. Qe2 $146 (15. a4 $14) ({Predecessor:} 15. Qd3 Qa4 16. O-O Rc8 17. Rfd1 c6 18. f3 Kd7 19. g4 hxg4 20. fxg4 Nc5 21. dxc5 Qxf4 {1-0 (83) Bosiocic,M (2602)-Movsesian,S (2679) Moscow 2017}) 15... Qa4 $11 16. O-O c5 17. Rfd1 Rc8 18. c4 Qxc4 19. Qxc4 dxc4 20. d5 Nxd5 21. Nxd5 exd5 22. Rxd5 {[#] Intending Rad1 and mate.} Nc7 23. Rd2 {Hoping for Rad1.} c3 $1 {[%cal Rc3d2]} 24. Rd3 {Threatens to win with Rad1.} Nb5 25. Rad1 $40 {[%mdl 128] Threatening mate with Rd8+. White attacks.} (25. Kf1 {with more complications.} Nd4 26. Rad1 Rc7 27. Rxc3 Kd7 28. e6+) 25... Nd4 26. Kf1 Kd7 27. Rxc3 Rc6 28. Rcd3 {c3 is the strong threat.} Kc8 $1 29. c3 Ne6 30. f3 Rc7 31. g4 Kb7 32. Kf2 Ka6 33. Ke3 Kb5 34. Rg1 {And now gxh5 would win.} hxg4 35. fxg4 Kc4 36. Rg3 (36. Ke4 $16) 36... Kb3 37. Kf3 c4 38. Rd5 Kxc3 $2 {[%mdl 8192] [#]} (38... Rc5 $14 39. Rd1 Kc2) 39. Ke2+ {Av CentiPawn Loss W=-6/B=-44. Weighted=-9/-108} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "2.3"]
[White "Xiong, Jeffery"]
[Black "Shen, Christopher"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2709"]
[BlackElo "2354"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,73,0,0,-8,0,-10,-2,3,5,4,7,0,-1,-43,-15,-6,-6,-22,33,33,23,28,29,27,28,22,41,18,27,0,9,-19,-12,-45,-45,-43,-38,-39,-36,-52,-46,-65,-42,-58,-57,-53,-52,-54,0,0,0,-15,-21,-33,0,0,0,0,0,0,0,0,0,0,0,-29]} 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 5. Nb5 Na6 6. e3 {D00: 1 d4 d5: Unusual lines.} O-O 7. h3 c6 8. Nc3 Nc7 9. Bd3 Nce8 {[#]} 10. Be5 $146 ({Predecessor:} 10. O-O Nd6 11. Re1 Bf5 12. Rc1 Rc8 13. Qe2 Nfe4 14. Nb1 Re8 15. Nbd2 f6 16. c4 {1-0 (38) Alekseenko,K (2696)-Iljiushenok,I (2516) chess.com INT 2020}) 10... Nd6 11. g4 Nfe4 12. Bxe4 Nxe4 13. Bxg7 Nxc3 (13... Kxg7 $11 14. Nxe4 dxe4) 14. Qd3 $14 Kxg7 15. Qxc3 Qd6 16. O-O-O Kg8 17. Nd2 Bd7 18. f4 Rac8 19. Nf3 f6 20. Qc5 b6 21. Qxd6 (21. Qc3 {feels hotter.} c5 22. dxc5 Rxc5 23. Qe1 Qc7 24. Rd2) 21... exd6 22. Rdg1 Kf7 23. Kd2 Rce8 24. b3 Rh8 25. Ne1 h5 26. g5 Bf5 27. Nf3 Be4 28. Rf1 Bxf3 (28... h4 $15) 29. Rxf3 $15 {[%mdl 4096] Endgame KRR-KRR} f5 30. c4 dxc4 31. bxc4 d5 32. Rc1 {The position is equal.} Rc8 33. c5 b5 34. a4 Rb8 35. axb5 Rxb5 36. Rff1 Rhb8 37. Rc2 {Av CentiPawn Loss W=-8/B=-8. Weighted=-8/-8} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "2.4"]
[White "Sheng, Joshua"]
[Black "Burke, John M"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2474"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,72,13,0,0,0,28,21,12,8,12,0,16,-11,18,0,0,0,0,0,0,-20,-32,-11,0,-39,-20,-14,-23,-17,0,-69,0,-20,-15,-22,-30,-201,-192,-183,-192,-337,-332,-704,-706,-893,-874,-845,-782,-758,-772,-763,-644,-764,-743,-745,-741,-793,-786,-29989,-29990,-29994,-29995]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 Bxc3 6. Qxc3 Qe7 7. a3 {7.b3 is setting a new trend. Played by Hikaru Nakamura in May 2020.} O-O {A28: English Opening: Four Knights Variation.} 8. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} d6 9. Bb2 Bg4 {The position is equal.} 10. d3 {[#]} a5 $146 ({Predecessor:} 10... Rad8 11. Be2 Rfe8 12. h3 Bh5 13. O-O h6 14. Rfe1 Nb8 15. e4 Bxf3 16. Bxf3 c5 {0-1 (43) Cezila,R (2314)-Petrosyan,M (2628) chess.com INT 2020}) 11. b5 Nb8 {[%cal Bc6b8,Bb8d7,Bd7c5,Bc5d3][%mdl 32]} 12. h3 Bh5 13. g4 Bg6 14. Nh4 Nbd7 15. Nxg6 fxg6 16. g5 Nh5 17. h4 $1 ({But not} 17. Bg2 Qxg5 18. Bxb7 Rxf2 $17) 17... Nc5 18. Qc2 Qf7 19. Rh2 $1 {[#]} Ng3 $1 {[%mdl 512]} 20. Bh3 $1 (20. fxg3 Qxf1+) 20... Qf3 $36 {[%mdl 2048] Black fights for an advantage.} 21. Rd1 (21. Qd1 $1 $11) 21... e4 (21... Nf5 $5 {[%cal Rf5e3]} 22. Qe2 Nxh4 $15) 22. d4 Nd3+ $1 23. Rxd3 $1 exd3 24. Qxd3 $2 {[#] This costs White the game.} (24. Be6+ $11 {and White is okay.} Kh8 25. Qxd3) 24... Rae8 $19 25. Bc1 Re4 26. Qc2 (26. Qd1 $142 Qf4 27. Rg2) 26... Nf5 27. Qd1 $2 (27. Bxf5 Qxf5 28. Qe2) 27... Nxd4 28. Qd3 Rxh4 29. Bb2 Rxh3 30. Qxd4 Rf7 31. Rxh3 Qxf2+ 32. Kd1 Qf1+ 33. Kc2 Qxh3 34. Kb3 Qf5 35. Qa7 Qd3+ 36. Bc3 Qd1+ {Av CentiPawn Loss W=-78/B=-8. Weighted=-123/-8} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "2.5"]
[White "Yoo, Christopher Woojin"]
[Black "Tiglon, Bryce"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2455"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,133,0,8,0,7,6,23,22,26,16,12,0,0,-4,-3,-15,-3,-25,-27,-18,-23,-22,-27,-22,-12,-23,-7,-33,-10,-38,-12,-14,0,-10,-10,-10,-2,-56,-58,-64,-41,-39,0,0,0,0,43,8,9,22,18,18,17,6,17,16,16,16,45,12,7,17,36,31,169,44,452,472,594,585,769,91,167,78,78,78,78,62,79,68,90,90,101,101,108,108,101,102,166,96,101,25,447,440,477,470,470,457,443,443,425,385,366,360,569,552,513,466,397,0,399,0,740,712,29974,29975,29973,29976,29976,29977,29977,29978,29974,29978,29975,29975]} 1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. d4 cxd4 $1 6. Qxd4 {B23: Closed Sicilian: Lines without g3.} Nc6 7. Qd3 Rc8 8. Nf3 {White has an edge.} g6 9. O-O Bg7 {[#]} 10. Re1 $146 ({Predecessor:} 10. Nd5 e6 11. Ne3 Nge7 12. c3 O-O 13. Rd1 Rcd8 14. b3 d5 15. Ba3 Rfe8 16. Rac1 {½-½ (38) Stearman,J (2349)-Stremavicius,T (2529) Charlotte 2020}) 10... Nf6 11. a3 O-O 12. Nd5 Ng4 13. Rd1 Nge5 14. Nxe5 Nxe5 15. Qe2 e6 16. Nb4 Nc4 17. c3 Qc7 18. Bf4 Rfd8 19. h4 h6 20. Rab1 Qb6 21. Rd3 Qb5 22. a4 Qb6 23. Rg3 (23. Rdd1 $11) 23... a5 $15 24. Nd3 e5 25. Be3 Qc6 {aiming for ...d5.} 26. b3 $36 {[%mdl 2048] White has some pressure.} Nxe3 27. Rxe3 b5 28. Nb2 {[%cal Bd3b2,Bb2a4,Ba4c3,Bc3d5][%mdl 32]} bxa4 29. Nxa4 d5 30. exd5 Rxd5 31. h5 g5 32. c4 Rd4 33. Nc3 f5 34. Rxe5 Bxe5 35. Qxe5 {[%mdl 64] Double Attack} Qd6 $1 {[%cal Rd6e5]} 36. Qxa5 Rd3 (36... Re8 $14) 37. Re1 ({Stronger than} 37. Qxf5 Rf8 $11) (37. Nd5 $18) 37... Rb8 $2 {[%mdl 8192]} (37... Qc5 $14 38. Qa1 Rd2) 38. Nd5 $18 Rdxb3 39. Ne7+ {[%mdl 64] Double Attack} Kh8 {Now ...Rb1 and Black clings on.} 40. Nxf5 $2 (40. c5 $18 {and the rest is easy.} Qf6 41. c6) 40... Qf6 (40... Ra3 $16) 41. Qd5 (41. Re4 $1 $18 {is more deadly.}) 41... Rb1 $16 42. Rxb1 Rxb1+ {[%mdl 4096] Endgame KQR-KQN} 43. Kh2 Re1 44. g4 Re5 45. Qa8+ Kh7 46. Qb7+ Kg8 47. Qc8+ Kh7 48. Qd7+ Kg8 {[#]} (48... Kh8 $16 49. Kg3 (49. Qc8+ Kh7 $16) 49... Re6 50. Qc8+ Kh7 51. Qb7+ Kg8) 49. Kg2 (49. c5 $1 $18 {[%mdl 512]} Re2 (49... Rxc5 50. Ne7+) 50. Kg2) 49... Kf8 50. Qh7 (50. Kh3 $16) 50... Re4 $2 {[%mdl 8192] White stays focused until the end.} (50... Rc5 $11) 51. Nxh6 $18 {[%mdl 64] Discovered Attack} Rf4 52. Qg8+ Ke7 53. Nf5+ Kd7 54. Qd5+ Kc7 55. f3 Qb2+ 56. Kg3 {Strongly threatening Qc5+.} Qc1 (56... Qe2 {keeps fighting.} 57. Qa5+ Kc8 58. Qc5+ Kd8 59. Qd5+ Kc7 60. Qc5+ Kd8 61. Qa5+ Kc8 62. Qa8+ Kc7 63. Qa7+ Kd8 64. Qb8+ Kd7 65. Qb7+ Kd8 66. Qd5+ Kc7) 57. Qc5+ Kb8 58. Qb6+ Ka8 {intending ...Rxf3+.} 59. h6 $2 ({White should play} 59. Qe3 $18 Qxe3 60. Nxe3) 59... Qe1+ $2 {[%mdl 8192]} (59... Rxf3+ $1 $11 60. Kxf3 Qf4+ 61. Kg2 Qg3+ 62. Kxg3 (62. Kf1 Qe1+ 63. Kg2 Qg3+ 64. Kh1 Qh2+ 65. Kxh2 $11)) 60. Kg2 $2 (60. Qf2 $18 Qh1 61. Nd6 Qh4+ 62. Kg2 Qxh6 63. Qa2+ Kb8 64. Qb3+ Kc7 65. Qb7+ Kd8 66. Qc8+ Ke7 67. Qc7+ Ke6 68. Nf5) 60... Qd2+ $2 {[%mdl 8192]} (60... Rxg4+ $11 61. Kh3 (61. fxg4 Qg3+ 62. Kh1 Qg2+ 63. Kxg2 $11) 61... Rf4 62. Qc6+ Kb8 63. Qb5+ Ka8 64. Qa6+ Kb8 65. Qb6+ Kc8 66. Qc5+ Kb8 67. Qf8+ {[#]} Kb7 $1 {[%mdl 512]} 68. Nd6+ Kc6 69. Qc8+ Kxd6 70. Qd8+ Kc6 $1 {[%mdl 512]} 71. Qc8+ Kb6 72. Qd8+ Kc6 $1 {[%mdl 512]} 73. Qc8+ Kd6 74. Qd8+ Kc6 $1 {[%mdl 512]}) 61. Qf2 Qd7 62. Qa2+ {White mates.} Kb8 63. Qb2+ Kc8 64. Qh8+ Kc7 65. Qg7 Rxc4 66. h7 Rc2+ 67. Kg3 {Av CentiPawn Loss W=-36/B=-64. Weighted=-47/-81} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "3.1"]
[White "Tiglon, Bryce"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2393"]
[BlackElo "2660"]
[Annotator "TA"]
[PlyCount "153"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,153,1,30,14,28,24,33,26,35,35,40,36,59,44,50,30,69,57,108,25,46,24,114,-21,-11,-23,-15,-22,-22,-25,0,-14,25,29,18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-20,0,0,0,-66,-62,-89,-39,-137,-57,-56,-59,-64,-33,-63,-50,-80,-50,-20,0,-57,-60,-126,-32,-44,-29,-20,160,159,139,132,190,-339,0,0,387,372,368,0,0,0,219,191,471,0,597,715,859,845,791,710,779,798,777,45,45,52,64,45,58,69,120,29,1410,394,319,0,0,0,0,0,0,-95,-16,-17,-20,-35,-10,-14,-14,-17,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 Nf6 6. Bxc6 dxc6 7. h3 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} Qc7 8. e5 Nd5 9. d3 {White is slightly better.} Bf5 {[#]} 10. Nbd2 $146 {[%cal Bb1d2,Bd2e4,Be4c5][%mdl 32]} ({Predecessor:} 10. a3 Qd7 11. Nbd2 h6 12. Ne4 b6 13. c4 Bxe4 14. Rxe4 Nc7 15. Qe2 O-O-O 16. d4 {½-½ (53) Dittmar,P (2294)-Nickel,R (2140) Bregenz 2017}) 10... Rd8 11. Ne4 Qb6 12. Qe2 O-O 13. a3 Nc7 {[#]} 14. b4 $1 {[%mdl 512]} cxb4 (14... Bxe4 $14 15. Qxe4 Ne6) 15. Be3 (15. axb4 $16 Na6 16. Bd2) 15... Qb5 $11 16. Nc5 Nd5 (16... b6 $11 {keeps the balance.} 17. a4 Qa5) 17. a4 (17. axb4 $16 Nxe3 18. Qxe3) 17... Qb6 {[#]} 18. Nd7 $1 {[%cal Rd7b6][%mdl 576] Discovered Attack} Qc7 (18... Rxd7 19. Bxb6) 19. Nxf8 Rxf8 20. Qd2 (20. Bxa7 b6 $17) 20... Rd8 21. Bh6 (21. Bxa7 b6 $17) 21... Bh8 22. Qg5 c5 23. Qh4 a5 24. Bd2 {Ng5 is the strong threat.} Bg7 25. Bh6 Bh8 26. Bd2 Bg7 27. Bh6 c4 28. Bxg7 Kxg7 29. Nd4 cxd3 30. Nxf5+ gxf5 31. cxd3 Kh8 32. Rac1 Nc3 33. Qh6 (33. Kh2 $11) 33... Qc6 $36 {[%mdl 3072] Black has compensation. Black is more active.} 34. Qf4 Rg8 {[%csl Gg8][%cal Rc6g2]} 35. f3 ({Better is} 35. g3 $15) 35... Qb6+ (35... Qxa4 $17 36. Qc4 (36. Rxc3 $2 Qa2 $19) 36... Qc6 37. Qxc6 bxc6 38. Rxc3 bxc3) 36. d4 Qg6 {[%csl Gg8][%cal Rg6g2]} (36... Nxa4 37. e6 $11) 37. g4 Nd5 38. Qd2 b6 39. Kf2 f4 40. h4 Qh6 41. Rh1 (41. h5 $11) 41... Qe6 42. Rhg1 (42. Qd3 $15) 42... Nc3 (42... Qd7 $1 $17 43. Ra1 Ne3) 43. Rc2 Qb3 44. Rgc1 Ne4+ $2 (44... Qxa4 $11 45. Qxf4 Qb3) 45. fxe4 $16 Qg3+ 46. Ke2 Rxg4 (46... b5 $16 {was worth a try.} 47. d5 (47. axb5 Qxg4+ 48. Ke1 Qg1+ 49. Ke2 Qg4+ 50. Kf2 Qg2+ 51. Ke1 Qh1+ 52. Ke2 Rg2+ 53. Kd3 Qh3+ 54. Kc4 Rxd2 $19) 47... bxa4) 47. h5 $4 {[%mdl 8192]} (47. Re1 $1 $18 {was the only winning move.}) 47... Qh3 $2 (47... Rh4 $19 48. Qe1 Rh2+ 49. Kd1 Qf3+ 50. Re2 Rh1) 48. Rf1 $1 $11 {Threatens to win with Ke1.} b3 $2 {[%mdl 8192]} (48... f3+ $1 $11 49. Rxf3 {[%mdl 64] Double Attack} Rxe4+ 50. Re3 Qg4+ 51. Ke1 Qg1+ 52. Ke2 Qg4+ {[%mdl 64] Double Attack} 53. Ke1 Qg1+ 54. Ke2 Qg4+ {[%mdl 64] Double Attack}) 49. Rc8+ $18 Kg7 50. h6+ $2 (50. Ke1 $1 $18) 50... Qxh6 $11 {Hoping for ...Rg2+.} 51. Rf2 Qh3 $2 (51... Qg6 $11 52. Rc3 Qxe4+ 53. Kf1 b5 $1 {[%mdl 512]} 54. Rxb3 bxa4) 52. Rc3 $1 $18 {[%cal Rc3h3]} Qh1 $2 (52... Rg3 53. Rxg3+ (53. Qxf4 Rxc3 54. Qxf7+ {[%mdl 64] Double Attack} Kh6 $11) (53. Rcf3 Rxf3 54. Rxf3 Qg2+ 55. Rf2 Qxe4+ 56. Kd1 Qb1+ 57. Qc1 Qd3+ 58. Qd2 Qb1+ 59. Qc1 Qd3+ 60. Ke1 Qe4+ 61. Re2 Qxd4 $16) 53... fxg3) 53. Kd3 $2 (53. Rcf3 $18) 53... b5 $2 {[%mdl 8192]} (53... b2 $11 {and Black stays safe.} 54. Qxb2 Qd1+ 55. Kc4 Qxa4+ 56. Kd3 Qd1+ 57. Kc4 (57. Qd2 Rg3+ 58. Kc4 Qa4+ 59. Kd5 Rxc3 $11) 57... Qa4+ 58. Kd3 Qd1+ 59. Kc4 (59. Qd2 Rg3+ 60. Kc4 Qa4+ 61. Kd5 Rxc3 62. Qxc3 Qb5+ 63. Qc5 bxc5 64. dxc5 Qd7+ 65. Kc4 Qa4+ 66. Kd5 Qd7+ 67. Kc4 Qa4+ 68. Kd5 Qd7+) 59... Qa4+) 54. axb5 a4 55. Kc4 Qxe4 56. Qe2 Qg6 57. Kb4 Rg1 58. Rxf4 $2 (58. Kxa4 $18 b2 59. Qxb2) 58... b2 $1 $14 {[%cal Rb2b1]} 59. Qxb2 Rb1 60. Rf2 Rxb2+ 61. Rxb2 {[%mdl 4096] Endgame KQ-KRR} Qe4 (61... h5 $14) 62. Rc4 (62. Ka3 $16) 62... Qd3 $2 {[%mdl 8192]} (62... Qd5 $11) 63. b6 $2 (63. Rg2+ Kh6 64. Rc3 Qb1+ 65. Kxa4 Qd1+ 66. Kb4 Qb1+ 67. Kc5) 63... a3 $18 {[#]} 64. Ra2 $2 ({White has to play} 64. Rb3 $1 $18 {[%cal Rb3d3]} Qe4 65. Rg3+ (65. Kxa3 Qa8+ 66. Kb2 Qg2+ 67. Rc2 Qb7 $18) 65... Kh6 66. Rxa3) 64... Qb1+ $11 {[%mdl 64] Double Attack} 65. Kxa3 {Black must now prevent Rg2+.} Qxb6 66. Rg2+ Kh6 67. Rb4 {[#]} (67. Rg3 $11) 67... Qa6+ ({Black should play} 67... Qa5+ $1 $17 68. Ra4 Qc3+ 69. Ka2 Qf3) 68. Kb2 {Strongly threatening Rb3.} Qf1 69. Rb6+ e6 (69... f6 $5 {[%cal Rf1g2]} 70. Rd2 Qf4 $17) 70. Rh2+ {The position is equal.} Kg7 71. Rb3 Qf4 72. Rg2+ Kf8 73. Rb8+ Ke7 74. Rb7+ Kf8 75. Rb8+ Ke7 76. Rb7+ Kf8 77. Rb8+ {Av CentiPawn Loss W=-61/B=-56. Weighted=-73/-94} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "3.2"]
[White "Burke, John M"]
[Black "Yoo, Christopher Woojin"]
[Result "1-0"]
[ECO "C03"]
[WhiteElo "2538"]
[BlackElo "2455"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,59,18,25,16,20,20,38,37,15,31,54,37,50,33,77,54,95,87,88,82,160,158,199,196,295,298,258,204,387,384,369,372,554,389,866,393,1087,1068,1156,1081,2077,2195,2000,2004,29962,5722]} 1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Ngf3 Nf6 5. e5 Nfd7 6. Bd3 c5 7. c3 Nc6 8. O-O g5 {The main line 8...g5 scores better than 8...a5.} 9. Qe2 {C06: French Tarrasch: 3...Nf6 4 e5 Nfd7 5 Bd3 main lines.} h5 10. Qe3 Qb6 11. b4 $1 {[%cal Rb4c5] White is slightly better.} cxd4 12. cxd4 Nxb4 13. Rb1 {Hoping for a3.} Qa5 $1 {[#]} 14. Rxb4 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 14. Be2 g4 15. Ne1 Nb6 16. Nb3 Qa4 17. Nc5 Bxc5 18. dxc5 Nc4 19. Qg5 Qxa2 20. Qg7 Qxb1 21. Qxh8+ {½-½ (30) Xiong,J (2634)-Van Foreest,J (2629) Wijk aan Zee 2018}) 14... Qxb4 15. Nxg5 Nb8 16. Ndf3 {[%mdl 1024] White has strong compensation.} Nc6 17. Qf4 Rf8 {[#]} ({Black should play} 17... Bxg5 18. Qxg5 b6) 18. Nh7 $1 $16 Rg8 {[#]} 19. Nfg5 $1 Rg7 (19... Bxg5 {is a better defense.} 20. Nxg5 Qe7) 20. Nf6+ $18 Kd8 21. Be3 a5 $2 (21... Bd7 {keeps fighting.}) 22. h4 Bd7 23. Nxh5 Rg8 (23... Bxg5 $142 24. hxg5 Rg8 25. Qxf7 Rf8) 24. Nf6 Bxf6 $2 (24... Rf8 25. Ngh7 Bxf6 26. Nxf8 (26. exf6 Rg8 $16) (26. Nxf6 Qa3 $18) 26... Qxf8) 25. exf6 (25. Nxf7+ $142 Kc7 26. exf6+ {[%mdl 64] Discovered Attack} e5 27. Nxe5) 25... Be8 $2 (25... Qf8 26. Rb1 Kc8) 26. Rb1 e5 27. Qf5 Qc3 28. Rxb7 Rxg5 29. hxg5 Nxd4 30. Bxd4 {Black did not feel at home in the position after the opening. Av CentiPawn Loss W=-78/B=-176. Weighted=-72/-213} ({But not} 30. Qxe5 $2 Qa1+ 31. Kh2 (31. Rb1 $2 Nf3+ 32. gxf3 Qxe5 $19) 31... Nf3+ {[%mdl 64] Discovered Attack} 32. gxf3 Qxe5+ $19) 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "3.3"]
[White "Shen, Christopher"]
[Black "Sheng, Joshua"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2354"]
[BlackElo "2474"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,82,26,20,23,29,35,34,34,36,30,40,0,17,0,7,0,0,0,0,0,11,0,0,0,16,16,15,0,0,0,0,-14,-9,-25,-39,-35,-33,-41,-35,-49,0,-11,0,9,81,41,148,159,169,152,163,154,217,147,143,37,37,37,37,37,37,31,37,30,30,30,30,30,30,0,30,0,30,0,26]} 1. d4 d5 2. c4 e6 3. Nf3 a6 4. cxd5 exd5 5. Nc3 Nf6 6. Bg5 {D37: Queen's Gambit Declined: 5 Bf4.} Be6 7. e3 Nbd7 8. Bd3 {White is slightly better.} Bd6 9. O-O O-O 10. Rc1 c6 11. Bh4 (11. h3 {is more complex.} Qc7 12. Ne2 Ne4 13. Bf4 Rfe8 14. Qc2) 11... h6 12. Bg3 Bxg3 13. hxg3 {[#]} Ne8 $146 ({Predecessor:} 13... Qc7 14. Qc2 Rfe8 15. Rfe1 Qd6 16. Na4 Rac8 17. Nc5 Nxc5 18. Qxc5 Qc7 19. Ne5 Nd7 20. Nxd7 Qxd7 {½-½ (91) Guo,Q (2447)-Ju,W (2559) Yangzhou 2016}) 14. Na4 Nd6 15. Nc5 Re8 16. Ne5 Rb8 17. Nexd7 Bxd7 18. a4 Bf5 19. Bxf5 Nxf5 20. Qd2 Qg5 21. Rc3 h5 22. Rb3 h4 23. gxh4 $1 Nxh4 {[%csl Gh4][%cal Rg5g2] [#]} 24. f3 Re7 25. Qf2 Rbe8 {[%cal Re7e3]} 26. e4 $1 Qh5 (26... dxe4 $11 27. fxe4 b6 28. Rxb6 Rd8) 27. e5 (27. Rxb7 Rxb7 28. Nxb7 Re6 $17) 27... b5 ({Black should try} 27... f6 $14) 28. a5 $16 Nf5 29. Rd3 ({Much less strong is} 29. Nxa6 $6 Re6 $14) 29... f6 30. f4 ({Not} 30. Nxa6 $2 fxe5 31. dxe5 Rxe5 $19) 30... g6 (30... Kf7 $16 31. Nxa6 Ra7) 31. Qf3 {Hoping for g4.} Qh6 32. Qh3 (32. Qd1 $16) 32... Qxh3 $14 33. gxh3 Ra7 34. b4 Kf7 35. Rf2 Rh8 36. Rg2 Rh4 37. Rg4 Rh6 38. Kh2 Ke7 39. Kg1 Kf7 40. Kh2 Ke7 41. Kg1 Kf7 {Av CentiPawn Loss W=-10/B=-13. Weighted=-13/-13} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "3.4"]
[White "Checa, Nicolas"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "2527"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,110,47,69,48,71,53,56,56,56,45,41,22,27,24,27,34,20,36,43,43,37,33,47,16,23,30,23,0,0,0,0,8,18,29,11,12,33,6,6,6,13,0,0,0,19,10,23,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-6,-6,-6,0,0,0,-6,-6,-6,-6,-8,-8,-148,-15,-9,0,-596,-572,-529,-414,-12829,-471,-640,-481,-1113,-460]} 1. d4 g6 2. c4 Bg7 3. Nf3 e6 4. Nc3 Ne7 5. Bf4 d6 6. Qd2 {A40: Unusual replies to 1 d4.} h6 7. h3 Nd7 8. e4 {White is slightly better.} b6 9. Be2 Bb7 10. O-O g5 {[#]} 11. Be3 $146 ({Predecessor:} 11. Bh2 Ng6 12. Rfd1 g4 13. hxg4 Nf6 14. Qc2 Nxg4 15. Qa4+ Kf8 16. c5 Nxh2 17. Kxh2 {0-1 (53) Streich,G (2167)-Buerckner,H (2154) Germany 2014}) 11... f5 12. exf5 Nxf5 13. d5 exd5 14. Nd4 Bxd4 15. Bxd4 Nxd4 16. Qxd4 Qf6 17. Qe3+ Qe5 18. Qxe5+ Nxe5 19. cxd5 Rf8 20. Nb5 Kd7 21. Rac1 Rfc8 22. Nc3 Rf8 23. g3 a6 24. f4 gxf4 25. gxf4 Ng6 $1 26. Bg4+ Kd8 $1 27. f5 Ne5 28. Kh2 b5 29. a3 Kd7 30. Bh5 Rg8 31. Rg1 Raf8 32. Rxg8 Rxg8 33. Rf1 Kd8 34. f6 Rf8 35. Kg3 Nd7 36. f7 Ke7 37. Re1+ Ne5 38. Kf4 Bc8 39. h4 Kd8 {[#] aiming for ...Nd3+.} 40. Rxe5 $1 dxe5+ 41. Kxe5 $11 {[%mdl 4096] Endgame Black must now prevent Kf6. KRB-KBN} Ke7 42. Ne4 Rd8 43. Nc5 Rd6 {[#] Threatens to win with ...Rf6.} 44. Ne4 $1 $132 {[%mdl 2048] White is fighting back} Rd8 45. Nc5 a5 46. b4 axb4 47. axb4 Rd6 {Black wants to play ...Rf6.} 48. Ne4 Ra6 49. Nc3 (49. Kd4 $11 {remains equal.}) 49... Bd7 ({Black should try} 49... Rf6 $17 {And now ...Rf5+ would win.} 50. Ke4 Bd7) 50. Ne4 Ra1 51. d6+ $2 {[%mdl 8192]} (51. Nf6 $1 $11 {and White has nothing to worry.} Re1+ 52. Kd4) 51... cxd6+ $19 52. Nxd6 Re1+ 53. Ne4 (53. Kd5 $142 Rh1 54. Be2) 53... Be6 (53... Bc6 $142 54. Bg6 Re2) 54. Kf4 Rf1+ 55. Ke5 (55. Bf3 $142 Bxf7 56. Ng3) 55... Rf5+ {[%mdl 64] Double Attack. Av CentiPawn Loss W=-53/B=-44. Weighted=-63/-51} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.13"]
[Round "3.5"]
[White "Jacobson, Brandon"]
[Black "Balakrishnan, Praveen"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2487"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,87,11,20,16,19,20,22,21,10,4,50,54,156,150,142,140,139,144,142,140,146,129,160,162,220,221,221,221,224,227,219,224,243,161,229,114,184,179,179,176,337,337,336,336,337,336,330,329,330,321,351,276,486,489,482,472,513,496,603,613,604,601,742,724,696,685,969,966,1506,1518,2743,2693,2479,2308,2256,2214,9404,7206,29983,29984]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 {E01: Catalan: Early deviations.} c6 7. O-O O-O 8. Qb3 {The position is equal.} Nbd7 9. Nc3 b6 10. e4 {[#]} Ba6 $146 (10... dxe4 $14 11. Ng5 Bb7) ({Predecessor:} 10... Nxe4 11. Nxe4 dxe4 12. Ng5 Nf6 13. Nxe4 Nxe4 14. Bxe4 Bb7 15. Bg2 Qc7 16. Rfd1 c5 17. Bxb7 Qxb7 18. Be3 Rac8 19. d5 e5 20. f3 f5 {½-½ (20) Fridman,D (2569)-Ovsejevitsch,S (2533) Griesheim 2006}) 11. cxd5 $16 exd5 12. e5 $36 {[%mdl 2112] Black must now prevent Rfe1. Double Attack. White is on the roll.} ({Inferior is} 12. exd5 Bxf1 13. Bxf1 Nxd5 $11) 12... Bxf1 13. Bxf1 Ne4 14. exd6 {Nxe4 is the strong threat.} Nxd2 15. Nxd2 Nf6 16. Qa3 {Strongly threatening Nf3.} Ne8 {[#]} (16... Qd7 $142 17. Re1 Rfd8) 17. Nf3 $1 $18 f6 18. Ne2 Qxd6 19. Qxd6 Nxd6 20. Rc1 Nc4 21. Nf4 g5 (21... Nxb2 $142 22. Rxc6 Rfc8) 22. Ne6 ({Less strong is} 22. Bxc4 dxc4 23. Ne2 b5 $14) (22. Nh5 $18 {has better winning chances.}) 22... Rf7 (22... Rfc8 $16 {might work better.}) 23. Bxc4 dxc4 24. Rxc4 Rc8 $2 (24... Re8 {was called for.}) 25. d5 c5 {Black hopes to continue with ...Rd7.} 26. Nfd4 Rd7 {[#]} 27. Nf5 $1 Kf7 28. Ne3 Re8 29. a3 h5 30. h4 Kg6 $2 (30... Rxe6 31. dxe6+ Kxe6 32. Re4+ Kf7) 31. Re4 gxh4 32. Rxh4 Rh8 33. g4 Rdh7 34. gxh5+ Kf7 35. Rg4 f5 36. Ng5+ {[%mdl 64] Double Attack} Ke8 37. Nxf5 Rd7 38. Ne6 b5 39. h6 c4 40. Rg7 a5 41. Nc7+ Kd8 42. Nxb5 Rxd5 43. Nbd6 Rf8 44. h7 {Av CentiPawn Loss W=-41/B=-123. Weighted=-28/-79} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "4.1"]
[White "Sevian, Samuel"]
[Black "Balakrishnan, Praveen"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "2660"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,125,2,0,0,0,-15,-45,-36,-120,17,23,13,-27,-25,-16,0,-138,-10,-30,-18,-8,-7,-68,-30,-148,-178,-256,-237,-254,-250,-246,-208,-224,-87,-417,-238,-208,-164,-257,-259,-252,-239,-222,-226,-300,-304,-385,-378,-377,-355,-386,-360,-397,-383,-445,-341,-552,-556,-556,-553,-562,-560,-579,-560,-597,-587,-595,-581,-625,-449,-650,-552,-1300,-622,-789,-481,-471,-462,-459,-366,-480,-434,-445,-13,-42,0,0,0,-250,-254,-263,0,0,2320,1965,2402,2697,1972,1695,29985,29986,29986,29987]} 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. O-O-O Be7 13. Kb1 Qb6 {B19: Classical Caro-Kann: 4...Bf5 main line.} 14. Qe2 O-O 15. Nf1 $5 {[%mdl 4] Exploring less charted territory.} c5 {Black is slightly better.} 16. g4 (16. c3 $15) 16... Nxg4 (16... cxd4 $17 17. g5 hxg5) 17. Rg1 $11 f5 $1 {[#]} 18. N1h2 $146 ({Predecessor:} 18. Ne3 Ndf6 19. d5 Nxe3 20. Qxe3 Ng4 21. Bc3 Bf6 22. Bxf6 Rxf6 23. Qc3 Qb4 24. Qxb4 cxb4 25. dxe6 {0-1 (52) Novotny,M (2293)-Wenninger,P (2229) Pardubice 2013}) 18... Nxh2 ({Much weaker is} 18... cxd4 $6 19. Nxg4 fxg4 20. Rxg4 $14) 19. Nxh2 Kh7 $36 {[%mdl 2048] Black has some pressure.} 20. Rg6 (20. Qe3 $11 Bg5 21. Rxg5 hxg5 22. Qxg5) 20... Rf6 (20... Bf6 $17 21. c3 cxd4 22. cxd4 Qxd4) 21. Bc3 Rxg6 22. hxg6+ Kg8 23. d5 (23. Nf3 $11) 23... Nf6 24. d6 (24. Qxe6+ $11 {keeps the balance.} Qxe6 25. dxe6) 24... Ne4 $17 25. Ka1 (25. Ba5 $142 Qxa5 26. dxe7) 25... Bxd6 $19 26. f3 Ng5 27. Nf1 Rd8 28. Ne3 {With the idea Nc4.} Bf4 {[#]} (28... Bf8 $19 {has better winning chances.} 29. Rf1 Qc6) 29. Re1 $2 {[%mdl 8192]} (29. Nxf5 $1 $17 {[%mdl 512]} Rxd1+ (29... exf5 30. Rd7) 30. Qxd1 exf5 31. Qd5+ {[%mdl 64] Double Attack} Kh8 32. Qxf5) 29... Bxe3 (29... Qc6 $142 30. Nxf5 Qxf3 31. Ne7+ Kh8 32. Qxf3 Nxf3) 30. Qxe3 Qd6 31. a4 (31. a3 {is a better defense.}) 31... f4 32. Qe2 Qd5 33. Rf1 Qf5 34. b3 Qxg6 35. Qe5 Nf7 36. Qe2 {[#]} e5 $1 37. Kb2 (37. Bxe5 Re8) 37... Re8 38. Qb5 Qc6 39. Qc4 e4 40. Rg1 $2 (40. Re1) 40... g5 41. fxe4 Rxe4 42. Qf1 c4 43. b4 Kh7 44. Qd1 Qd6 45. Qf3 Qe6 46. Qd1 Re3 47. Bd4 {[#]} (47. Qd4 $142 Qg6 48. Qxc4) 47... c3+ $1 48. Ka3 (48. Bxc3 Ne5) 48... Re4 49. Qd3 Qg6 50. Qxc3 {[#]} f3 $1 51. Bxa7 (51. Qxf3 Rxd4) 51... Rf4 52. Bf2 g4 53. a5 Rf5 $2 (53... Nd6 $19 {aiming for ...Nb5+.} 54. Qd3 Qxd3+ 55. cxd3 Nb5+ 56. Ka4 Nc3+ 57. Kb3 Ne2) 54. Qc7 h5 {Strongly threatening ...Qd6.} 55. Qxb7 Rf6 56. Qd5 $2 {[#]} (56. Kb3 $11 {and White stays safe.}) 56... Rd6 $1 {[%cal Rd6d5]} ({Inferior is} 56... Qxc2 57. Qxh5+ Nh6 58. Re1 $11) 57. Qb3 Rc6 $2 (57... Rd2 $19 58. Be3 Re2) 58. Rd1 $11 Rxc2 $2 {[%mdl 8192] [#]} (58... Ne5 $11 59. Bg3 Qf6) 59. Rd7 $1 $18 {[%mdl 512]} Kg8 {[#]} 60. Rxf7 $1 {[%mdl 576] Deflection} Qxf7 61. Qxc2 Qe6 62. Qb3 Kf7 63. a6 {Av CentiPawn Loss W=-70/B=-95. Weighted=-69/-94} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "4.2"]
[White "Xiong, Jeffery"]
[Black "Jacobson, Brandon"]
[Result "1/2-1/2"]
[ECO "B62"]
[WhiteElo "2709"]
[BlackElo "2487"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,106,44,39,72,67,75,70,76,68,106,59,83,47,50,44,71,70,70,47,69,48,47,37,25,19,19,6,17,0,9,0,18,10,4,3,105,27,85,9,44,34,50,45,47,0,64,69,98,113,214,221,230,231,246,152,140,121,122,139,115,109,131,112,128,37,43,34,42,57,57,18,25,32,66,-27,-26,-29,-13,-39,-39,-32,-41,-41,-16,-16,-1,-12,0,-45,0,-22,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd3 Bd7 8. O-O-O a6 9. f4 $1 {The main line 9.f4 scores better than 9.Be2.} Qa5 {B62: Sicilian: Richter-Rauzer: 6...e6: Unusual White 7th moves.} 10. Nb3 Qc7 11. Be2 {[#]} O-O-O $146 {White is slightly better.} ({Predecessor:} 11... Be7 12. Bf3 h6 13. Bxf6 gxf6 14. Kb1 h5 15. h4 b5 16. Ne2 a5 17. Nbd4 Nxd4 18. Nxd4 {0-1 (35) Bottema,T (2405)-Armas,J (2450) Wijk aan Zee 1998}) 12. Kb1 Kb8 13. Rhf1 Bc8 14. Qe3 Be7 15. f5 h6 16. Bf4 exf5 17. exf5 Bxf5 18. Nd4 Nxd4 19. Qxd4 Be6 20. Be3 Qc5 21. Qd2 Qc7 22. Qd4 Qc5 23. Qd2 Qc7 24. Rf4 d5 25. Qd4 $36 {[%mdl 2048] Black is under pressure.} Bd6 (25... Rd6 $11 {keeps the balance.}) 26. Qa7+ Kc8 {[#]} 27. Ra4 (27. Nxd5 $1 $16 Bc5 28. Nxc7 Rxd1+ 29. Bxd1 Bxa7 30. Nxe6 (30. Bxa7 Kxc7 31. Bd4 Rd8 $14) 30... Bxe3 31. Rc4+ Kd7 32. Nxg7) 27... Qb8 28. Rxa6 Qxa7 29. Rxa7 Bxh2 30. Na4 Bb8 (30... Kc7 $11) 31. Ra5 Kd7 32. Nc5+ Ke8 (32... Kc7 $16 {was called for.}) 33. Nxb7 $18 Rc8 34. Bc5 Ne4 35. Bb4 f6 36. Ra6 Kf7 37. Bh5+ g6 {[#]} 38. Bxg6+ $1 {[%mdl 576] Deflection} Kxg6 39. Rxe6 Be5 40. Rxd5 ({White should try} 40. Na5 $16) 40... Kf5 $1 $14 {[%cal Rf5e6]} 41. Re7 Rhg8 42. a4 {And now Bd6 would win.} Rxg2 43. c3 Nd2+ 44. Ka1 Nc4 $1 45. Nd6+ (45. a5 $14) 45... Nxd6 $11 46. Bxd6 Rd8 47. Rexe5+ fxe5 48. Rxe5+ {[%mdl 4096] Endgame KRR-KRB} Kf6 49. Bc7 $1 Rc8 {[%mdl 1024] Black has compensation.} 50. Rc5 $1 Ke6 {Hoping for ...Kd7.} 51. Re5+ Kf6 52. Rc5 $1 {aiming for Be5+.} Ke6 {Strongly threatening ...Kd7.} 53. Re5+ Kf6 {White really could win this. Av CentiPawn Loss W=-17/B=-16. Weighted=-17/-18} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "4.3"]
[White "Sheng, Joshua"]
[Black "Checa, Nicolas"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2474"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,125,22,18,16,45,37,45,41,39,29,47,15,31,6,17,9,34,16,15,12,8,13,10,9,14,4,15,15,13,15,7,0,0,0,0,0,0,0,24,0,0,0,2,6,21,22,100,56,58,42,43,33,62,23,14,-8,-15,-68,-69,-74,-35,-43,-58,-50,-16,-15,0,0,0,-4,0,0,0,-154,247,239,1126,1145,1137,1110,1060,1015,895,656,4774,4694,5302,1818,1827,1604,29984,29981,29995,29996,29996,29997,29998,29989,29989,29990,29990,29991,29991,29992,29992,29993,29993,29994,29995,29996]} 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Nf3 Bc6 6. Bd3 Nd7 7. O-O Ngf6 8. Nxf6+ Qxf6 9. Be2 Bd6 10. c4 {Hoping for d5. C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4.} Bxf3 11. Bxf3 c6 12. Qb3 {White is slightly better.} Rb8 $1 13. Be3 O-O 14. Rfd1 {[#]} Rfd8 $146 ({Predecessor:} 14... a6 15. Rac1 Rfd8 16. Be2 Bf4 17. Bxf4 Qxf4 18. Rc3 Nf6 19. Rf3 Qc7 20. Qc3 Rd7 {0-1 (38) Hagesaether,A (2181)-Gormally,D (2514) Hastings 2009}) 15. Qc2 Bf4 16. Rd3 Qh6 17. Bxf4 Qxf4 18. Re1 Nf6 19. g3 Qc7 20. Qc3 Rd7 21. Red1 Rbd8 22. b4 h6 23. a4 a6 24. a5 Qd6 25. Kg2 Qe7 26. R3d2 Rd6 27. Qb2 R6d7 28. Re1 Ne8 29. Rdd1 Qf6 {[%cal Rd7d4]} 30. b5 cxb5 ({Of course not} 30... Rxd4 $6 31. bxa6 bxa6 32. Qb6 $16) 31. cxb5 Qg5 (31... Nc7 $11 {keeps the balance.}) 32. bxa6 bxa6 33. Re5 Qf6 34. Qb6 Rd6 35. Qc5 g6 36. Be2 Ng7 37. Re4 ({White must play} 37. g4 $1 $11) 37... Nf5 $15 {[%cal Rf5d4]} 38. Rf4 Qg5 39. Qc3 {[#]} e5 $1 $36 {[%mdl 2560] Black has the initiative.} 40. Rg4 (40. dxe5 Rxd1) 40... Qe7 {[%cal Rf5d4]} 41. d5 $1 e4 42. Bc4 e3 {Strongly threatening ...exf2.} (42... h5 $5 43. Rf4 $8 R6d7 $11) 43. Re1 {[%cal Rf2e3]} Qc7 44. fxe3 {e4 is the strong threat.} h5 45. Rg5 $2 (45. Rf4 $1 $11 Rxd5 46. e4 {[%mdl 64] Double Attack}) 45... Rxd5 $2 {[#] This costs Black the game.} (45... Qe7 $17 46. Rxf5 gxf5) 46. Rxg6+ $1 $18 {[%mdl 576] Double Attack} Kf8 $2 (46... Kh7 47. Rg7+ (47. Rxa6 h4 $11) 47... Kh8 48. Rg5+ {[%mdl 64] Discovered Attack} Qe5 49. Qxe5+ (49. Rxh5+ Kg7 $18) 49... Rxe5) (46... fxg6 47. Bxd5+) 47. Qh8+ {[%mdl 64] Double Attack} Ke7 48. Qf6+ {[%mdl 64] Double Attack} Kf8 49. Bxd5 Rxd5 50. Rg5 Qc2+ 51. Kh3 Rd2 {[#]} 52. Rh1 (52. Re2 $142 $1 {[%mdl 512]} Qb2 (52... Rxe2 53. Qd8#) 53. Qxb2 Rxb2 54. Rxb2) 52... Qe4 53. Qxf5 Qg2+ 54. Kh4 {White mates.} Qxh1 {[%mdl 4096] Endgame KQR-KQR} 55. Qc8+ Ke7 56. Re5+ Kf6 57. Qf5+ Kg7 58. Qg5+ Kh7 59. Qxh5+ {[%mdl 64] Double Attack} Kg7 60. Rg5+ Kf8 61. Qh8+ Ke7 62. Re5+ Kd7 63. Qe8+ {[%mdl 64] Double Attack. Av CentiPawn Loss W=-39/B=-63. Weighted=-55/-88} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "4.4"]
[White "Yoo, Christopher Woojin"]
[Black "Shen, Christopher"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2455"]
[BlackElo "2354"]
[Annotator "RC"]
[PlyCount "79"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+5"]

1. Nf3 {[%emt 0:00:05]} Nf6 {[%emt 0:00:05]} 2. b3 {[%emt 0:00:02]} g6 {[%emt 0:00:10]} 3. Bb2 {[%emt 0:00:02]} Bg7 {[%emt 0:00:01]} 4. g3 {[%emt 0:00:01]} O-O {[%emt 0:00:06]} 5. Bg2 {[%emt 0:00:02]} d5 {[%emt 0:00:34]} 6. c4 {[%emt 0:00:06]} c6 {[%emt 0:00:11]} 7. O-O {[%emt 0:00:03]} Re8 {[%emt 0:00:21]} 8. d4 {[%emt 0:01:39]} Nbd7 {[%emt 0:02:43]} 9. Nbd2 {[%emt 0:00:36]} a5 {[%emt 0:00:22]} 10. a3 {[%emt 0:01:44]} a4 {[%emt 0:00:56]} 11. cxd5 {[%emt 0:02:25]} cxd5 {[%emt 0:00:24]} 12. b4 {[%emt 0:00:05]} Nb6 {[%emt 0:01:22]} 13. e3 {[%emt 0:00:57]} Bd7 {[%emt 0:00:38]} 14. Qe2 {[%emt 0:00:41]} e6 {[%emt 0:01:32]} 15. Rac1 {[%emt 0:01:10]} Qe7 {[%emt 0:00:41]} 16. Ne5 {[%emt 0:01:04]} Rec8 {[%emt 0:01:14]} 17. e4 {[%emt 0:00:57]} dxe4 {[%emt 0:03:48]} 18. Nxe4 {[%emt 0:00:17]} Nxe4 {[%emt 0:00:14]} 19. Bxe4 {[%emt 0:00:01]} Be8 {[%emt 0:00:05]} 20. Rc5 {[%emt 0:01:23]} Nd5 {[%emt 0:02:16]} 21. Rfc1 {[%emt 0:00:57]} Rxc5 {[%emt 0:00:39]} 22. dxc5 {[%emt 0:00:34]} Rd8 {[%emt 0:00:21]} 23. Nc4 {[%emt 0:01:12]} Qg5 {[%emt 0:03:07]} 24. h4 {[%emt 0:00:09]} Qh6 {[%emt 0:00:37]} 25. Rd1 {[%emt 0:01:19]} Bxb2 {[%emt 0:01:05]} 26. Qxb2 {[%emt 0:00:19]} Qh5 {[%emt 0:00:52]} 27. Rd2 {[%emt 0:01:00]} Qg4 {[%emt 0:00:21]} 28. Rd4 {[%emt 0:00:51]} Qh5 {[%emt 0:01:15]} 29. Nd6 {[%emt 0:01:11]} b6 {[%emt 0:00:19]} 30. Bxd5 {[%emt 0:00:07]} exd5 {[%emt 0:00:01]} 31. Rf4 {[%emt 0:00:19]} Qd1+ {[%emt 0:00:26]} 32. Kh2 {[%emt 0:00:05]} Qe1 {[%emt 0:00:03]} 33. Qf6 {[%emt 0:01:10]} Rd7 {[%emt 0:00:20]} 34. c6 {[%emt 0:00:03]} Re7 {[%emt 0:00:17]} 35. Nxe8 {[%emt 0:00:11]} Rxe8 {[%emt 0:00:00]} 36. Qxf7+ {[%emt 0:00:01]} Kh8 {[%emt 0:00:01]} 37. c7 {[%emt 0:00:04]} Qe5 {[%emt 0:00:28]} 38. Qf8+ {[%emt 0:00:03]} Rxf8 {[%emt 0:00:02]} 39. Rxf8+ {[%emt 0:00:00]} Kg7 {[%emt 0:00:00]} 40. c8=Q {[%emt 0:00:02]} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "4.5"]
[White "Tiglon, Bryce"]
[Black "Burke, John M"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2393"]
[BlackElo "2538"]
[Annotator "RC"]
[PlyCount "48"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+5"]

1. e4 {[%emt 0:00:05]} e5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:02]} Nc6 {[%emt 0:00:02]} 3. Bb5 {[%emt 0:00:01]} a6 {[%emt 0:00:03]} 4. Ba4 {[%emt 0:00:02]} Nf6 {[%emt 0:00:03]} 5. O-O {[%emt 0:00:04]} b5 {[%emt 0:00:05]} 6. Bb3 {[%emt 0:00:04]} Bc5 {[%emt 0:00:03]} 7. a4 {[%emt 0:00:06]} Rb8 {[%emt 0:00:25]} 8. axb5 {[%emt 0:00:22]} axb5 {[%emt 0:00:03]} 9. Nxe5 {[%emt 0:00:01]} Nxe5 {[%emt 0:00:13]} 10. d4 {[%emt 0:00:01]} Bxd4 {[%emt 0:00:23]} 11. Qxd4 {[%emt 0:00:00]} d6 {[%emt 0:00:02]} 12. f4 {[%emt 0:00:09]} Nc6 {[%emt 0:01:12]} 13. Qc3 {[%emt 0:00:04]} Ne7 {[%emt 0:00:27]} 14. Ra7 {[%emt 0:00:39]} c5 {[%emt 0:02:10]} 15. e5 {[%emt 0:00:14]} Nfd5 {[%emt 0:00:44]} 16. Bxd5 {[%emt 0:00:30]} Nxd5 {[%emt 0:00:03]} 17. Qf3 {[%emt 0:00:12]} Qb6 {[%emt 0:01:02]} 18. Rxf7 {[%emt 0:00:04]} c4+ {[%emt 0:00:01]} 19. Kh1 {[%emt 0:00:06]} Kxf7 {[%emt 0:00:04]} 20. Qxd5+ {[%emt 0:00:01]} Be6 {[%emt 0:00:01]} 21. Qd1 {[%emt 0:00:01]} Bf5 {[%emt 0:00:22]} 22. Qd5+ {[%emt 0:00:02]} Be6 {[%emt 0:00:46]} 23. Qd1 {[%emt 0:00:06]} Bf5 {[%emt 0:01:28]} 24. Qd5+ {[%emt 0:00:05]} Be6 {[%emt 0:00:28]} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "5.1"]
[White "Burke, John M"]
[Black "Sevian, Samuel"]
[Result "1-0"]
[ECO "C84"]
[WhiteElo "2538"]
[BlackElo "2660"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,97,0,0,0,0,7,0,27,20,18,16,13,8,26,26,25,18,18,18,15,15,31,31,30,39,32,45,42,41,69,67,72,65,58,43,67,55,51,0,42,0,11,0,0,0,0,0,54,53,53,52,52,46,174,179,175,175,164,165,374,353,373,359,376,383,547,527,1150,1185,1157,1150,1103,1010,1084,872,1287,1400,1282,1323,29980,29977]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. a3 O-O 9. Nc3 Bg4 10. Be3 Nd4 {C84: Closed Ruy Lopez: Unusual White 6th moves.} 11. Bxd4 exd4 12. Nd5 Nxd5 {The position is equal. The modern move.} 13. Bxd5 Rc8 14. Bc6 Bf6 15. a4 Rb8 16. axb5 axb5 {[#]} 17. Ra6 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 17. Re1 Rb6 18. Bd5 c6 19. Bb3 d5 20. h3 Bc8 21. exd5 cxd5 22. Qd2 Qd6 23. Ra8 {½-½ (57) Nepomniachtchi,I (2784)-Vachier Lagrave,M (2778) chess24.com INT 2020}) 17... Bc8 18. Ra5 Rb6 19. Bxb5 c6 20. Bc4 Rxb2 21. Ra8 Rb6 22. Qd2 Qc7 23. Rfa1 Be6 24. Rxf8+ Kxf8 25. Bxe6 fxe6 26. h4 e5 27. Kh2 h6 28. g4 (28. c3 $14) 28... Be7 29. h5 Kg8 30. g5 Qc8 {And now ...Qg4 would win.} 31. Qa5 Rb8 32. Qa2+ Kh8 (32... d5 $1 $11 33. exd5 Kh8 34. dxc6 (34. Nxe5 $2 Bd6 $19) 34... e4 35. dxe4 Qg4) 33. gxh6 $1 $14 gxh6 {[#] Threatens to win with ...Qg4.} 34. Rg1 {Black must now prevent Rg6.} Qf8 35. Qe6 $1 $40 {[%mdl 128] Hoping for Rg6. White attacks.} Qf4+ {Black cannot hold the game after this.} ({Better is} 35... Kh7 $14) 36. Rg3 $18 Qf6 37. Qxf6+ Bxf6 {[%mdl 4096] Endgame KRB-KRN} 38. Rg6 $1 {[%csl LRf6,LRh6][%mdl 64] [#] Double Attack} Rf8 $2 (38... Be7 39. Rxh6+ Kg8 40. Rg6+ Kf7) 39. Rxh6+ Kg7 40. Rg6+ Kf7 {intending ...Rh8.} 41. Kg3 Rb8 (41... Rh8 $142 42. Kg4 d5 43. Ng5+ Bxg5) 42. Kg4 Rb1 43. Kf5 Be7 44. h6 Rh1 45. Rg7+ Kf8 46. Rh7 Ke8 47. Ke6 Bf8 48. Ng5 Rg1 49. Ra7 {Av CentiPawn Loss W=-7/B=-70. Weighted=-6/-100} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "5.2"]
[White "Shen, Christopher"]
[Black "Tiglon, Bryce"]
[Result "1-0"]
[ECO "D90"]
[WhiteElo "2354"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,83,42,18,34,30,29,5,10,-7,14,-25,-13,-20,-13,-20,-13,-29,70,-8,-14,-21,-22,-5,41,48,48,0,0,-38,-18,-31,7,-20,42,0,0,0,0,0,16,27,28,11,28,28,51,43,54,27,53,51,81,72,72,72,77,75,110,110,110,106,271,275,220,266,224,86,258,260,296,281,29975,29976,29972,29955]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. cxd5 Nxd5 6. Bg5 Nxc3 {D90: Grünfeld: 4 Nf3 Bg7 sidelines.} 7. bxc3 c5 8. Rc1 O-O {The position is equal.} 9. Qd2 Bg4 10. d5 Nd7 11. e4 {[#]} Bxf3 $146 ({Predecessor:} 11... f6 12. Be3 Bxf3 13. gxf3 f5 14. Be2 Qc7 15. Bg5 Rae8 16. h4 fxe4 17. fxe4 Qe5 {1-0 (34) Elis,V (2200)-Schmidt,U (2088) Baden 2018}) 12. gxf3 Ne5 13. Be2 b5 ({Black should play} 13... f5 $1 $11) 14. Bh6 (14. h4 $14) 14... Bxh6 $11 15. Qxh6 f5 16. h4 e6 17. h5 Nf7 18. Qf4 {Hoping for hxg6.} g5 19. Qe3 exd5 20. Rd1 $1 {[%cal Rd1d5] [#]} d4 $1 {[%mdl 512]} 21. cxd4 Qa5+ (21... f4 $11 22. Qc3 cxd4 23. Rxd4 Rc8) 22. Qd2 (22. Kf1 {feels hotter.} f4 23. Qc1 c4 24. Rg1 Kh8 25. d5) 22... Qxd2+ 23. Rxd2 cxd4 24. Rxd4 Rad8 25. Rb4 a6 26. a4 bxa4 27. Rxa4 Rfe8 28. O-O Kg7 29. Bxa6 Rd6 30. Kg2 Re7 31. Bc8 fxe4 32. fxe4 Ne5 33. Bf5 Rh6 34. Rh1 Rd6 35. Ra8 h6 $2 (35... Rh6 $16 {was necessary.} 36. f3 Rb6) 36. Rb1 $18 Nd3 37. Rbb8 {[#] Threatens to win with Rg8+.} Kf6 38. Ra5 (38. Kg3 $18) 38... Nf4+ $2 (38... Kg7 $16 {was called for.}) 39. Kh2 {Strongly threatening Rh8.} Nxh5 40. Rh8 Kg7 $2 (40... Kf7 $18 41. e5 Rde6 42. Bxe6+ Rxe6 43. Ra7+ Kg6) 41. Rh7+ Kf8 42. Ra8+ {Av CentiPawn Loss W=-14/B=-48. Weighted=-18/-47} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "5.3"]
[White "Checa, Nicolas"]
[Black "Yoo, Christopher Woojin"]
[Result "1-0"]
[ECO "A58"]
[WhiteElo "2527"]
[BlackElo "2455"]
[Annotator "RC"]
[PlyCount "95"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+5"]

1. d4 {[%emt 0:00:05]} Nf6 {[%emt 0:00:05]} 2. c4 {[%emt 0:00:05]} c5 {[%emt 0:00:02]} 3. d5 {[%emt 0:00:05]} b5 {[%emt 0:00:01]} 4. cxb5 {[%emt 0:00:00]} a6 {[%emt 0:00:04]} 5. bxa6 {[%emt 0:00:11]} e6 {[%emt 0:00:02]} 6. Nc3 {[%emt 0:01:24]} exd5 {[%emt 0:00:02]} 7. Nxd5 {[%emt 0:00:13]} Be7 {[%emt 0:00:02]} 8. Nxe7 {[%emt 0:02:09]} Qxe7 {[%emt 0:00:02]} 9. e3 {[%emt 0:00:02]} O-O {[%emt 0:00:05]} 10. Nf3 {[%emt 0:00:03]} d5 {[%emt 0:00:06]} 11. Bd3 {[%emt 0:00:24]} Rd8 {[%emt 0:01:21]} 12. O-O {[%emt 0:00:08]} Ne4 {[%emt 0:00:32]} 13. b3 {[%emt 0:02:09]} Qf6 {[%emt 0:04:11]} 14. Bb2 {[%emt 0:01:28]} Qxb2 {[%emt 0:00:26]} 15. Bxe4 {[%emt 0:00:03]} Bxa6 {[%emt 0:04:01]} 16. Re1 {[%emt 0:02:23]} Nc6 {[%emt 0:03:11]} 17. Bxd5 {[%emt 0:01:23]} Nb4 {[%emt 0:01:31]} 18. e4 {[%emt 0:00:07]} Bb7 {[%emt 0:02:31]} 19. Re2 {[%emt 0:05:05]} Qf6 {[%emt 0:00:58]} 20. Rd2 {[%emt 0:00:43]} Nxd5 {[%emt 0:00:41]} 21. exd5 {[%emt 0:00:04]} Rxd5 {[%emt 0:01:30]} 22. Rxd5 {[%emt 0:00:28]} Bxd5 {[%emt 0:00:00]} 23. Rc1 {[%emt 0:00:02]} Bxf3 {[%emt 0:00:22]} 24. Qxf3 {[%emt 0:00:00]} Qxf3 {[%emt 0:00:38]} 25. gxf3 {[%emt 0:00:00]} Rxa2 {[%emt 0:00:00]} 26. Rxc5 {[%emt 0:00:37]} g6 {[%emt 0:00:04]} 27. f4 {[%emt 0:00:22]} Kg7 {[%emt 0:00:32]} 28. Rc6 {[%emt 0:01:38]} Rb2 {[%emt 0:00:37]} 29. Rb6 {[%emt 0:00:04]} f5 {[%emt 0:01:25]} 30. Kg2 {[%emt 0:00:09]} Kh6 {[%emt 0:00:01]} 31. Rb7 {[%emt 0:00:07]} g5 {[%emt 0:00:36]} 32. fxg5+ {[%emt 0:01:16]} Kxg5 {[%emt 0:00:00]} 33. Kg3 {[%emt 0:00:01]} f4+ {[%emt 0:00:17]} 34. Kf3 {[%emt 0:00:06]} h6 {[%emt 0:00:55]} 35. Rb6 {[%emt 0:00:52]} h5 {[%emt 0:00:27]} 36. Rb5+ {[%emt 0:00:47]} Kg6 {[%emt 0:00:08]} 37. b4 {[%emt 0:01:01]} Kh6 {[%emt 0:00:31]} 38. h4 {[%emt 0:00:25]} Kg6 {[%emt 0:00:02]} 39. Rg5+ {[%emt 0:00:05]} Kh6 {[%emt 0:00:01]} 40. b5 {[%emt 0:00:25]} Rb4 {[%emt 0:00:01]} 41. Rd5 {[%emt 0:00:17]} Kg6 {[%emt 0:00:10]} 42. Rc5 {[%emt 0:00:12]} Rb2 {[%emt 0:00:09]} 43. Kxf4 {[%emt 0:00:36]} Rxf2+ {[%emt 0:00:02]} 44. Ke5 {[%emt 0:00:01]} Rf5+ {[%emt 0:00:03]} 45. Kd6 {[%emt 0:00:12]} Rf4 {[%emt 0:00:02]} 46. b6 {[%emt 0:00:08]} Rxh4 {[%emt 0:00:02]} 47. b7 {[%emt 0:00:03]} Rb4 {[%emt 0:00:03]} 48. Kc7 {[%emt 0:00:03]} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "5.4"]
[White "Jacobson, Brandon"]
[Black "Sheng, Joshua"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2487"]
[BlackElo "2474"]
[Annotator "RC"]
[PlyCount "41"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+5"]

1. d4 {[%emt 0:00:05]} d5 {[%emt 0:00:05]} 2. c4 {[%emt 0:00:01]} c6 {[%emt 0:00:01]} 3. Nf3 {[%emt 0:00:03]} Nf6 {[%emt 0:00:01]} 4. e3 {[%emt 0:00:00]} e6 {[%emt 0:00:01]} 5. Bd3 {[%emt 0:00:05]} dxc4 {[%emt 0:00:09]} 6. Bxc4 {[%emt 0:00:02]} Nbd7 {[%emt 0:00:01]} 7. O-O {[%emt 0:00:13]} Bd6 {[%emt 0:00:03]} 8. Be2 {[%emt 0:00:47]} O-O {[%emt 0:00:28]} 9. Nbd2 {[%emt 0:00:02]} Bc7 {[%emt 0:02:44]} 10. Nc4 {[%emt 0:07:49]} b5 {[%emt 0:01:27]} 11. Nce5 {[%emt 0:00:36]} Bb7 {[%emt 0:01:12]} 12. Qc2 {[%emt 0:04:06]} Rc8 {[%emt 0:01:08]} 13. b4 {[%emt 0:00:15]} Nxe5 {[%emt 0:03:24]} 14. Nxe5 {[%emt 0:00:01]} c5 {[%emt 0:04:02]} 15. bxc5 {[%emt 0:01:37]} Bxe5 {[%emt 0:00:11]} 16. dxe5 {[%emt 0:00:00]} Nd7 {[%emt 0:00:01]} 17. Ba3 {[%emt 0:05:27]} Nxe5 {[%emt 0:06:05]} 18. f4 {[%emt 0:01:11]} Qa5 {[%emt 0:01:56]} 19. Qb2 {[%emt 0:01:47]} Nc6 {[%emt 0:00:28]} 20. Rab1 {[%emt 0:01:24]} Ba8 {[%emt 0:01:38]} 21. Bf3 {[%emt 0:00:31]} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "5.5"]
[White "Balakrishnan, Praveen"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "D26"]
[WhiteElo "2485"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,70,10,14,10,10,-8,-4,-10,-6,-8,0,-29,-27,-65,-58,-61,-54,-59,-39,-85,-89,-159,-162,-201,-208,-193,-197,-185,-183,-202,-192,-197,-176,-181,-159,-170,-177,-182,-168,-179,-126,-236,-217,-213,-169,-529,-529,-529,-529,-529,-521,-514,-514,-505,-497]} 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. O-O Nc6 7. Nc3 a6 8. dxc5 Qxd1 9. Rxd1 Bxc5 10. a3 {10.Nd2 is more fashionable. has lost popularity (10.Nd2). D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} b5 11. Ba2 (11. b4 {seems wilder.} Be7 12. Be2 O-O 13. Bb2 Bb7 14. Nd2) 11... Bb7 12. b4 {The position is equal.} Be7 13. Bb2 O-O {[#]} 14. e4 $146 ({Predecessor:} 14. Nd4 Rfd8 15. Nxc6 {½-½ (15) Zarnicki,P (2499)-Sorin,A (2512) Buenos Aires 2002}) 14... Rfd8 15. Kf1 Rxd1+ 16. Rxd1 a5 17. e5 Ne8 18. bxa5 Rxa5 19. Rd7 (19. Bb1 $142) 19... Ba6 $17 ({Don't play} 19... Bxa3 20. Bxa3 Rxa3 21. Rxb7 $17 (21. Nxb5 Ba6 $17)) 20. Ke1 {intending Nd4.} Bxa3 21. Rd2 b4 22. Nd1 Nc7 23. Rc2 Bxb2 24. Rxb2 Nb5 25. Bc4 Ra1 {White must now prevent ...Nc3.} 26. Bxb5 Bxb5 27. Kd2 Ra3 28. Ne3 Rd3+ (28... h6 $19 29. Nc2 Rd3+ 30. Kc1 Rc3) 29. Ke1 (29. Kc1 $17) 29... b3 30. Nd2 Nd4 31. Nec4 $2 {[#]} (31. Ndc4 {is more resistant.}) 31... Nc2+ $19 {Black is clearly winning.} 32. Ke2 Rc3 33. Nxb3 Bxc4+ 34. Kd2 Rxb3 35. Rxc2 Ba6 {Av CentiPawn Loss W=-29/B=-8. Weighted=-55/-9} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "6.1"]
[White "Sevian, Samuel"]
[Black "Xiong, Jeffery"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2660"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,125,31,4,17,0,0,19,22,11,6,16,35,35,40,43,43,44,39,46,40,41,41,29,29,24,40,37,79,85,120,122,135,52,45,39,71,75,83,83,87,66,80,36,35,24,41,24,29,20,19,38,23,18,126,69,64,66,56,28,93,97,103,9,10,0,102,67,100,96,99,88,109,125,128,107,98,85,95,96,96,86,93,78,147,182,167,108,180,183,171,173,179,179,227,237,320,318,378,256,377,360,12794,11142,1472,620,29951,29949,29996,29997,29997,29990,29994,29995]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 h6 7. Nbd2 O-O 8. h3 a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 9. Bb5 $5 {[%mdl 4] Leaves trodden paths.} Na7 10. Ba4 b5 {[%cal Bb7b5,Bb5b4][%mdl 32] The position is equal.} 11. Bc2 Nc6 12. Re1 {[#]} b4 $146 ({Predecessor:} 12... Re8 13. Nf1 d5 14. exd5 Qxd5 15. Ng3 Be6 16. Qe2 Qd7 17. Be3 Bf8 18. Bd2 Nd5 {0-1 (56) Chigaev,M (2644)-Maghsoodloo,P (2664) Khanty-Mansiysk 2019}) 13. Nf1 Bb6 14. Ng3 Re8 15. d4 Bd7 16. a3 bxc3 17. bxc3 a4 18. Rb1 Na5 19. Bxa4 Bxa4 20. Qxa4 Qd7 21. Qc2 exd4 22. cxd4 Qc6 23. Qxc6 (23. Qd3 $16) 23... Nxc6 $14 24. Bb2 Ra4 {[%cal Rc6d4]} 25. d5 Nb8 26. Bxf6 $1 gxf6 27. Rb3 Nd7 28. Nh2 h5 29. Nxh5 f5 $1 30. Rg3+ Kf8 31. Rg5 Rexe4 32. Rxe4 fxe4 33. Ng4 {Nh6 is the strong threat.} e3 (33... Bd4 $11 {keeps the balance.}) 34. Nxe3 (34. fxe3 $16 Rxa3 35. Kf2) 34... Bxe3 35. fxe3 Rxa3 $16 {[%mdl 4096] Endgame KRN-KRN} 36. e4 Ne5 (36... Ra4 $11) 37. Nf6 Ke7 38. Ng8+ ({Better is} 38. Rf5 $16) 38... Kf8 $1 $11 39. Nf6 (39. Nh6 $11) 39... Ke7 $16 40. Ng4 (40. Rf5 {feels hotter.} Ng6 41. Ng4 Kf8 42. Rf3 Ra4 43. Nf6) 40... Ng6 41. Rf5 Ra4 42. Nh6 Rxe4 43. Rxf7+ Kd8 44. Ng4 Rd4 45. Rf5 Ke7 46. g3 Ke8 47. Rg5 Ne7 48. Ne3 c5 (48... Rd2 $142) 49. dxc6 $1 Nxc6 50. Kf2 ({White should play} 50. Rd5 $18) 50... Ne5 {[#]} (50... Rd2+ $16 51. Kf3 Ne5+ 52. Kf4 Kf7) 51. Nf5 $1 $18 {[%cal Rf5d4]} Rd2+ 52. Ke3 {Hoping for Rg8+.} Nc4+ {[#]} 53. Kf4 $1 Kf7 54. Rh5 d5 55. Rh7+ Kg6 56. Rh6+ Kf7 57. Kg5 Ne5 $2 (57... Rd3 58. h4 Rc3) 58. Rh7+ Kg8 59. Rb7 (59. Rc7 $142 Re2 60. Kf6) 59... d4 {If only Black now had time for ...d3....} 60. Kf6 {White mates.} Nc4 61. Nh6+ Kh8 62. Re7 Rf2+ 63. Kg6 {Av CentiPawn Loss W=-40/B=125. Weighted=-43/21} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "6.2"]
[White "Sheng, Joshua"]
[Black "Balakrishnan, Praveen"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2474"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,96,36,48,60,50,31,37,38,59,49,59,64,50,66,59,51,59,39,34,32,34,31,35,0,17,0,7,9,14,12,0,0,0,-18,0,0,0,0,0,0,0,5,16,5,57,54,41,51,51,25,22,12,14,0,0,-15,0,0,0,0,0,0,0,0,0,-267,-275,-269,0,0,0,0,0,0,0,0,41,38,37,14,15,0,0,0,0,-170,0,-585,-652]} 1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. e3 c6 5. d4 Bf8 6. Nc3 {A21: English Opening: 1...e5 2 Nc3.} exd4 7. Qxd4 Nf6 8. e4 {White is slightly better.} d6 9. Bf4 {[#]} Qb6 $146 ({Predecessor:} 9... Nh5 10. Be3 Be6 11. O-O-O Qc7 12. f4 Bg4 13. Be2 Bxe2 14. Ngxe2 Nd7 15. g4 Nhf6 16. g5 Nh5 17. Ng3 Nxg3 18. hxg3 a6 {1-0 (33) Zvarik,M (2319)-Toma,R (2053) Banska Stiavnica 2016}) 10. Qd2 Be7 11. Nf3 O-O 12. Be2 Na6 13. O-O Nc5 14. Qc2 Bg4 15. Rad1 Rfe8 16. Rfe1 Bf8 {[%cal Rc5e4]} 17. Nd2 Bxe2 18. Rxe2 Ne6 19. Be3 Nd4 20. Bxd4 $1 Qxd4 21. Na4 b5 22. cxb5 cxb5 23. Nc3 $36 {[%mdl 2048] White has the initiative.} Rac8 {Threatening ...b4.} 24. Nb3 Qe5 {And now ...b4 would win.} 25. Qd3 a6 26. g3 Rc4 (26... Qh5 $11) 27. Kg2 $14 Nd7 28. Na5 Rcc8 29. a3 Qh5 30. f3 Ne5 31. Qe3 f5 32. Rd5 fxe4 33. Nxe4 Qf7 34. Red2 ({Much worse is} 34. Nxd6 Qxd5 35. Nxc8 Rxc8 $17) 34... Rc1 {aiming for ...Nxf3!} 35. Ng5 Qg6 {White must now prevent ...Ng4!} 36. Re2 Rcc8 {Hoping for ...Ng4!} 37. Rxe5 $4 {[%mdl 8192]} (37. Ne4 $11 {and White has nothing to worry.}) 37... Rxe5 $19 (37... dxe5 $2 {loses.} 38. Qb3+ Re6 39. Nxe6 $18) 38. Qb3+ {[#]} Kh8 $2 ({Black should play} 38... Rc4 $1 $19 39. Ne4 d5 40. Nxc4 bxc4) 39. Nf7+ $11 {[#]} Qxf7 $1 {[%mdl 512]} 40. Qxf7 Rxe2+ 41. Kh3 Rxb2 {[#]} 42. Nc6 $1 {[%mdl 512]} Re2 (42... Rc2 $5 {[%cal Rc2c6]} 43. Nd4 R2c7 $11) (42... Rxc6 43. Qxf8#) 43. Qb7 {[%mdl 1024] White has compensation.} Ree8 44. Nd4 Ra8 45. Ne6 Rab8 46. Qd7 a5 47. Nc7 $2 {[#]} (47. Nd4 $11 {and White stays safe.}) 47... Red8 $2 (47... Re7 $1 $19 {[%cal Re7d7]} 48. Qxd6 b4) 48. Qf7 $2 {[%mdl 8192]} (48. Qf5 $11 {and White is okay.}) 48... Rb7 {Av CentiPawn Loss W=-28/B=-12. Weighted=-28/-16} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "6.3"]
[White "Yoo, Christopher Woojin"]
[Black "Jacobson, Brandon"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2455"]
[BlackElo "2487"]
[Annotator "TA"]
[PlyCount "181"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,181,38,49,22,43,40,75,25,17,25,25,25,23,-8,-8,-12,0,-6,14,12,12,10,3,4,8,-2,16,0,0,0,47,-156,-135,-181,500,498,558,535,537,557,541,534,502,508,500,187,185,185,190,190,185,191,193,188,191,173,183,155,157,157,164,132,144,124,149,144,147,155,163,158,163,157,182,182,197,184,188,127,181,0,190,182,222,192,230,190,210,211,204,204,223,221,276,268,278,293,317,311,308,268,323,301,383,368,322,265,279,194,324,261,256,256,272,267,283,286,290,282,282,248,309,281,303,277,277,265,265,114,235,235,298,235,252,237,286,243,237,197,221,200,257,262,277,251,299,260,245,205,252,200,228,212,292,276,276,223,212,210,394,380,372,339,339,322,493,496,427,410,2385,1922]} 1. e4 c5 2. g3 g6 3. Bg2 Bg7 4. Ne2 d6 5. O-O Nc6 6. c3 Nf6 7. d4 O-O 8. h3 {B06: Modern Defence.} Qb6 9. Na3 Rd8 10. Nc4 {White is better.} Qa6 11. Ne3 {[#]} cxd4 $146 ({Predecessor:} 11... b5 12. d5 Na5 13. f4 Nd7 14. h4 Bb7 15. Kh2 Nb6 16. f5 Nac4 17. Ng4 Nd7 {0-1 (51) Duncan,L (1931)-Singh,R (2077) Port of Spain 2013}) 12. cxd4 e5 13. dxe5 (13. d5 {is interesting.} Nb4 14. a4 Nd3 15. b3 Bd7 16. Ba3) 13... dxe5 14. Nd5 Nxd5 15. exd5 Nd4 16. Nxd4 exd4 17. Bg5 Re8 18. Re1 $36 {[%mdl 2048] White has some pressure.} Bd7 19. Qd2 Bb5 20. Qf4 f6 21. Bh6 g5 22. Qxd4 $2 (22. Qf5 $1 $14 {is the one way to stay ahead.} Bxh6 23. d6 $1 {[%mdl 512]}) 22... Bxh6 $17 23. d6 Bd7 $4 {[%mdl 8192] [#]} (23... Rad8 $19 {and all is fine.} 24. a4 Bc6 25. Qxf6 Bg7 26. Qxg5 Qd3) 24. Re7 $1 $18 {White wants to mate with Bd5+.} Rxe7 25. dxe7 Qa4 26. Rd1 Qxd4 27. Rxd4 Re8 28. Rxd7 {[%mdl 4096] Endgame Threatens to win with Bd5+. KRB-KRB} f5 29. Bf3 $2 (29. Bxb7 Kf7 30. Bd5+ {[%mdl 64] Discovered Attack} Kf6 31. Rd6+ Ke5 32. Rxh6 Kxd5 33. Rxh7) 29... g4 30. hxg4 fxg4 31. Bxg4 Bg5 32. Rxb7 Rxe7 33. Rb5 Bf6 34. Kg2 Bd4 35. Kf3 Rc7 36. Bf5 Bb6 37. Rb4 h6 38. Rg4+ Kf7 39. Rg6 Rc5 40. Be4 h5 41. Rd6 Ke7 42. Rd2 Kf6 43. Kg2 Rc1 44. Bf3 Rc5 45. Rd6+ (45. b4 $18 Rc4 46. Bxh5) 45... Kg7 (45... Ke5 $16 46. Rd2 Kf6) 46. Rd2 Kf6 $1 47. Bd1 Kg7 48. f4 Kf6 49. Kf3 Kg7 50. Bb3 Rc1 51. Rd5 Rf1+ 52. Kg2 Rf2+ 53. Kh3 Rxb2 54. Rxh5 Rb1 55. Kg4 Rg1 56. Rh2 Kf6 57. Re2 Bc5 58. Re6+ Kg7 59. Re5 Bb6 60. a4 Kf6 (60... Bf2 $142) 61. Rf5+ Ke7 62. Rg5 Rb1 63. Bc4 Rb4 64. Bb5 Kf6 65. Rf5+ Kg7 66. Rd5 Rb3 67. Rd2 Kf6 68. Rh2 Kg7 69. Rg2 Kf6 70. Kh5 (70. Re2 $18 {has better winning chances.}) 70... Rc3 {This move loses the game for Black.} (70... Ba5 $16 71. Kh4 Be1) 71. Kh4 Rb3 72. Re2 Be3 73. Kg4 Bb6 74. Rc2 Kg7 75. Bc6 Kf6 76. Bf3 Rb4 77. Bd1 Rb1 78. Rd2 Ra1 79. Rd3 Rc1 80. Kf3 Bc7 81. Rd7 Rc3+ 82. Ke4 Rc4+ 83. Kd3 Rc1 84. Bc2 Bb6 85. a5 Bf2 $2 (85... Bxa5 86. Rxa7 Bd8 87. Ra6+ Kg7) 86. g4 Rg1 87. Ke2 Bc5 88. Bf5 Rg3 (88... Ra1 {was called for.} 89. Rd5 Ra2+ 90. Kd3 Ra3+ 91. Kc4 Be7 92. g5+ Kg7) 89. Rd5 Be3 90. g5+ Ke7 (90... Kf7 $142 91. g6+ Kf6) 91. Re5+ {[%mdl 64] Double Attack. Av CentiPawn Loss W=-29/B=-42. Weighted=-24/-38} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "6.4"]
[White "Tiglon, Bryce"]
[Black "Checa, Nicolas"]
[Result "0-1"]
[ECO "C10"]
[WhiteElo "2393"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,88,50,61,62,61,39,50,43,49,47,56,54,80,32,37,18,35,37,27,27,19,9,0,0,0,0,3,-13,-14,-39,-41,-59,-45,-39,-39,-41,-42,-47,-43,-54,-51,-55,-52,-66,-54,-58,-43,-53,-51,-54,-51,-47,-48,-52,-55,-59,-50,-57,-25,-23,-29,-42,-39,-70,-71,-95,-95,-79,-93,-93,-91,-86,-80,-79,-72,-78,-8]} 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Nf3 Bc6 6. Bd3 Nd7 7. c3 Ngf6 8. Nxf6+ {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4.} Nxf6 9. Bf4 Bxf3 10. Qxf3 {White is slightly better.} c6 11. O-O Qd5 12. Qe2 Qh5 {[#]} 13. Qxh5 $146 ({Predecessor:} 13. Qc2 Rd8 14. Qb3 Rd7 15. Rae1 Qa5 16. Be5 Qb6 17. Qxb6 axb6 18. f4 Bd6 19. f5 Bxe5 20. Rxe5 {½-½ (35) Ter Sahakyan,S (2551)-Gorbatov,A (2389) Riga 2018}) 13... Nxh5 14. Be5 O-O-O 15. Be2 Nf6 16. Bxf6 gxf6 17. b4 e5 18. dxe5 fxe5 19. Bg4+ Kc7 20. Rad1 Bh6 21. c4 Bd2 22. b5 Rd4 23. bxc6 bxc6 24. Be2 Rhd8 25. Rb1 Ba5 26. c5 Bb4 27. Rfc1 a5 28. Ba6 Ra8 29. Bc4 f6 30. Rc2 Rad8 31. g3 Rd2 32. Rbb2 Rxc2 33. Rxc2 Bxc5 $15 {[%mdl 4096] Endgame KRB-KRB} 34. Bf1 Bd4 35. Kg2 Rb8 36. Bd3 h6 37. Be4 c5 {[%cal Bc6c5,Bc5c4,Bc4c3][%mdl 32]} 38. Kf3 Rb4 39. Re2 {[#]Black is better.} Kd6 $1 40. Kg4 Bxf2 41. Kf5 Bg1 42. h4 c4 43. Kxf6 c3 44. Kf5 Rb2 {[%mdl 32768] Av CentiPawn Loss W=-7/B=-5. Weighted=-6/-5. Loss on time!?} (44... Rb8 $17 45. g4 Rh8) 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.14"]
[Round "6.5"]
[White "Burke, John M"]
[Black "Shen, Christopher"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2538"]
[BlackElo "2354"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,73,13,21,25,21,20,14,23,17,27,-7,0,0,14,0,0,0,0,-10,-29,-5,108,0,0,0,7,6,67,62,63,50,121,73,72,21,18,7,7,0,0,-13,0,0,0,0,0,0,0,0,0,-2,-3,-16,-18,-54,0,-12,0,0,0,-12,0,-1,0,-12]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd7 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5.} 7. O-O Nc6 8. Nb3 {[%cal Rb3d4]} a6 9. a4 Nf6 10. Qe2 Bd6 11. Rd1 Qe7 12. Nbxd4 Nxd4 13. Rxd4 e5 $1 {[%cal Re5d4]} 14. Rxd6 Qxd6 15. b3 {[#] Strongly threatening Ba3.} Bg4 $146 {[#]} (15... e4 $11 {remains equal.}) ({Predecessor:} 15... Be6 16. Ba3 Bxc4 17. Qxc4 Qd5 18. Qc3 Nd7 19. Re1 f6 20. Re3 Qd1+ 21. Ne1 Qg4 {½-½ (57) Nyzhnyk,I (2649)-Lenderman,A (2640) Philadelphia 2019}) 16. Bxf7+ $1 {[%mdl 512]} Kxf7 $11 17. Nxe5+ {[%mdl 64] Double Attack, Discovered Attack} Kg8 18. Nxg4 {aiming for Qc4+.} h6 (18... h5 $11 19. Qc4+ Kh7) 19. Bb2 $1 $14 {[%cal Rb2f6]} Nxg4 $1 20. Qxg4 {[%csl Gb2][%cal Rg4g7]} Qc7 (20... Qe7 $1 $14) 21. Rd1 Re8 22. h4 (22. Kf1 $16 {Hoping for Rd7!} h5 23. Qd7 Qxd7 24. Rxd7) 22... h5 $1 $11 {[%cal Rh5g4]} 23. Qg6 Qf7 24. Qxf7+ Kxf7 {[%mdl 4096] Endgame KRR-KRB} 25. Rd3 Rh6 26. Kf1 Re7 27. g3 Rhe6 28. Ba3 Rc7 29. c4 g6 30. Bd6 Rd7 31. c5 Re4 32. Kg2 Ke8 ({Better is} 32... Ke6 $15) 33. Rd5 {The position is equal.} Rf7 34. Bf4 Rd7 35. Bd6 Rf7 36. Bf4 Rd7 37. Bd6 {Av CentiPawn Loss W=-12/B=-11. Weighted=-13/-12} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "7.1"]
[White "Shen, Christopher"]
[Black "Sevian, Samuel"]
[Result "0-1"]
[ECO "E68"]
[WhiteElo "2354"]
[BlackElo "2660"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,116,20,22,12,10,9,8,-48,-41,-47,-37,-66,-76,-123,-77,-81,-101,-102,-98,-104,0,-8,-8,-2,36,-1,-8,-66,-58,-118,-117,-156,-117,-233,-246,-258,-253,-256,-256,-308,-292,-289,-290,-309,-307,-317,-270,-399,-354,-433,-411,-581,-581,-569,-570,-553,-429,-424,-417,-410,-410,-348,-349,-610,-618,-592,-580,-682,-690,-836,-798,-823,-773,-870,-629,-726,0,-883,-852,-946,-957,-4706,-2169,-29966,-6079,-29974,-29945,-2167,-970,-29981,-29982,-29985,-29984,-29984,-29985]} 1. d4 g6 2. c4 Bg7 3. Nf3 d6 4. g3 Nf6 5. Bg2 O-O 6. O-O Nbd7 7. Nc3 e5 8. e4 exd4 9. Nxd4 Re8 10. h3 Nc5 11. Re1 Bd7 12. Bf4 {is more profitable than 12.Rb1 at the moment. Played by Maxime Vachier Lagrave in October 2020.} h6 13. Qc2 {E68: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4.} (13. b3 {is interesting.} a5 14. Rb1 Nh7 15. h4 Nf6 16. Qd2) 13... Nfxe4 14. Nxe4 Bxd4 15. Bxh6 (15. Qd2 $11 Ne6 16. Bxh6) 15... Nxe4 $15 16. Bxe4 Bxh3 {[#]} 17. Bxg6 $1 {[%mdl 512]} Qf6 $1 {[%mdl 64] Pin} ({Stronger than} 17... fxg6 18. Qxg6+ Kh8 19. Qh5 $16) 18. Bh7+ Kh8 {( -> ...Qf3)} 19. Bf4 Bxb2 20. Rab1 {[#] Strongly threatening Rxe8+.} Rxe1+ $1 21. Rxe1 {[#]} Be5 $146 (21... Kg7 $1 $17 22. Be4 Re8) ({Predecessor:} 21... Kg7 22. Be4 Re8 23. Re2 b6 24. Qa4 Re7 25. Qc6 Be5 26. Bxe5 Rxe5 27. f4 Rc5 28. Qe8 Qd4+ {0-1 (27) Sanchez Guirado,F (2408)-Illescas Cordoba,M (2624) Merida 2005}) 22. Bxe5 dxe5 23. Be4 c6 24. Qe2 {[%mdl 1024] And now Qh5+ would win. White has compensation.} Kg7 25. Bc2 ({Much weaker is} 25. Qh5 Be6 $17) ({White should play} 25. g4 $11) 25... Be6 26. a3 {Black continues to play with concentration.} (26. Bb3 $15) 26... Rd8 $17 27. c5 Rd5 28. Qe3 (28. Rb1 $17 {might work better.}) 28... Qh6 $19 29. Qc3 Qd2 30. Qxd2 Rxd2 {[%mdl 4096] Endgame KRB-KRB} 31. Be4 f5 32. Bg2 Kf6 33. Rb1 Bc8 34. Rc1 e4 35. Kf1 (35. g4 $142) 35... Ke5 36. Ke1 Ra2 37. Rc3 (37. Bf1 {was called for.}) 37... Kd4 38. Re3 Kxc5 39. g4 fxg4 40. Bxe4 a5 41. Bg6 b5 42. Rc3+ Kb6 43. Bf7 $2 (43. f4) 43... Ra1+ 44. Kd2 c5 45. Re3 c4 46. Bg8 Ra2+ 47. Ke1 Bf5 48. Bf7 Ra1+ 49. Kd2 Ra2+ 50. Ke1 Rb2 51. Bg8 Bd3 52. Be6 Kc5 53. Bxg4 Kd4 54. Re8 Rb1+ 55. Bd1 Bc2 (55... b4 $142 56. a4 b3 57. Rd8+ Kc3) 56. Rd8+ Kc3 {Black mates.} 57. f4 b4 58. axb4 axb4 {Av CentiPawn Loss W=473/B=-81. Weighted=176/-91} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "7.2"]
[White "Checa, Nicolas"]
[Black "Burke, John M"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2527"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,85,10,0,16,4,23,12,24,5,31,19,37,14,0,0,0,0,0,-18,-18,-19,-18,-14,-5,-14,-16,-12,29,29,58,20,40,31,36,32,68,68,72,72,75,68,184,184,184,183,184,178,177,177,170,162,294,301,288,256,234,222,308,42,65,57,45,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Bg7 6. e4 Nxc3 7. Bxc3 O-O 8. Qd2 Nd7 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} 9. Nf3 b6 10. Bd3 e6 11. h4 c5 12. h5 cxd4 13. Nxd4 Nc5 14. Bc2 e5 15. Nc6 Qxd2+ $1 {[#]} 16. Kxd2 $146 ({Predecessor:} 16. Bxd2 Re8 17. Bg5 Bb7 18. Ne7+ Kf8 19. Nd5 Ne6 20. Be3 Rac8 21. Ba4 Red8 22. Bb3 {½-½ (66) Ragger,M (2680)-Muzychuk,A (2520) Munich 2016}) 16... Re8 $1 17. hxg6 hxg6 18. Nb4 Bb7 19. f3 Rad8+ 20. Ke3 $1 Bf6 21. Rad1 Ne6 22. Bb3 Nd4 23. Bd5 a5 24. Bxb7 axb4 25. Bxd4 $1 exd4+ 26. Kd3 Be7 27. Bd5 Bc5 ({Black should try} 27... Kg7 $14) 28. Rh6 $18 Kg7 29. Rdh1 {Strongly threatening Rh7+.} f5 30. Rh7+ Kf6 {[#]} 31. f4 $1 {[%csl Gd5][%cal Rh7f7]} fxe4+ 32. Bxe4 Rg8 (32... Rxe4 $142 33. Kxe4 Re8+ 34. Kd3 Re3+ 35. Kc4 Rg3) 33. g4 Rg7 34. R7h6 Kf7 35. Re1 Rd6 36. Kc4 $2 ({Only move:} 36. g5 $18 {aiming for f5.} Kg8 37. Bf3) 36... d3 $1 $14 37. Bd5+ Kf6 {[#] ...Rc7 is the strong threat.} 38. Rh8 {Rf8+ would kill now.} (38. Re5 $5 {[%cal Rg4g5]} Rgd7 39. Rh3 $14) 38... Rc7 {The position is equal.} (38... Rgd7 $5 39. Rf8+ $8 Kg7 40. Rg8+ Kf6 41. Rf8+ Kg7 42. Rg8+ Kf6 43. Rf8+ $11) 39. Rf8+ Kg7 40. Rg8+ Kf6 {And now ...Bf2+ would win.} 41. Rf8+ Kg7 42. Rg8+ Kf6 {Threatens to win with ...Bf2+.} 43. Rf8+ {Black defended with fortune. Av CentiPawn Loss W=-14/B=-15. Weighted=-17/-16} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "7.3"]
[White "Jacobson, Brandon"]
[Black "Tiglon, Bryce"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2487"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,67,19,0,0,0,29,6,24,19,40,31,16,29,46,-237,0,0,-27,-265,0,0,522,516,703,654,29968,29969,29969,29970,29969,29970,29965,29966,5735,5727,5727,5718,29998,29999]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 O-O 9. Be2 Nc6 10. d5 Ne5 11. Nxe5 Bxe5 12. Qd2 e6 13. f4 Bc7 14. O-O exd5 15. exd5 Ba5 16. d6 Rb8 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} 17. Rb5 {aiming for f5.} Bd7 18. f5 {Rxa5! is the strong threat.} Bxb5 {The position is equal.} 19. Bxb5 {Hoping for f6.} Qh4 20. Rf4 {[%mdl 1024] White has compensation.} Qg5 21. Qe1 a6 {[#]} 22. Bd7 $146 {[%mdl 8192]} (22. fxg6 $1 $14 {keeps the upper hand.} Qxg6 23. Rf3 axb5 24. Rg3) ({Predecessor:} 22. fxg6 Qxg6 23. Bd7 Kh8 24. Bf5 Qf6 25. Qe2 Qh6 26. Rf1 Qg7 27. Qh5 Rg8 28. g3 {1-0 (40) Ghosh,A (2068)-Ferre Perez,A (2114) ICCF email 2014}) 22... Rbd8 $2 (22... Qd8 $19 23. fxg6 hxg6) 23. Rf3 Qg4 24. Rf4 $2 (24. Qe7 $11 {and White stays safe.} Qc4 25. Be6 $1 {[%mdl 512]} fxe6 26. fxg6 hxg6 27. Bh6 Bxc3 28. Rxf8+ Rxf8 29. Qxf8+ Kh7 30. Be3) 24... Qg5 $2 (24... Qh5 $19 25. Ba4 Rxd6) 25. fxg6 $11 Qxg6 $2 {[%mdl 8192]} ({Don't blunder} 25... Rxd7 $2 26. gxh7+ Kh8 {[#]} 27. Rxf7 $1 $18 {[%mdl 512]}) (25... hxg6 $11 26. Rxf7 Qh5) 26. Bf5 $18 Qxd6 {And now ...Qd1 would win.} 27. Qh4 {[%csl Gf5][%cal Rh4h7]} Rfe8 28. Qxh7+ Kf8 29. Qh8+ Ke7 30. Re4+ Qe6 31. Rxe6+ fxe6 32. Qg7+ Kd6 33. Bf4+ Kd5 34. Qxb7+ {[%mdl 64] Double Attack. Av CentiPawn Loss W=-35/B=-191. Weighted=-40/-241} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "7.4"]
[White "Balakrishnan, Praveen"]
[Black "Yoo, Christopher Woojin"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2485"]
[BlackElo "2455"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,98,33,38,37,35,58,54,56,14,52,41,47,61,84,41,51,60,91,91,101,45,123,117,114,118,113,118,129,27,45,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-32,-16,-16,-16,-16,-15,-15,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 exd5 10. Bd3 O-O 11. O-O d4 12. Ne2 Bg4 13. f3 Bh5 14. Bg5 Bg6 {B45: Sicilian Four Knights.} 15. Bh4 Qd6 16. Bg3 Qd5 {[#] White is slightly better.} 17. Qd2 $146 ({Predecessor:} 17. Bf2 Rad8 18. Bxg6 hxg6 19. Qd2 Qb5 20. a4 Qc4 21. b3 Qd5 22. Rad1 d3 23. Nf4 {1-0 (41) Clarke,B (2411)-Yang,G (1860) Sydney 2018}) 17... Rac8 18. Rad1 Bxd3 19. Qxd3 Rfd8 20. Rfe1 Rd7 21. Bh4 Qc5 22. Bxf6 gxf6 23. f4 (23. b4 $16 Qb6 24. Kf1) 23... Re7 (23... Ne7 $14) 24. Ng3 $16 Rxe1+ 25. Rxe1 Ne7 26. b4 Qd6 27. Qe2 ({White should play} 27. h3 $16) 27... Kf8 $1 $11 28. f5 Nd5 29. Qh5 Ne3 30. Qh6+ Ke7 31. Nf1 Rxc2 32. Nxe3 dxe3 33. Qxe3+ {[%mdl 64] [#] Double Attack} Qe5 $1 34. Qxe5+ (34. Qe4 {looks sharper.} Qxe4 35. Rxe4+ Kf8 36. a4 Ra2 37. a5) 34... fxe5 35. Rxe5+ {[%mdl 4096] Endgame KR-KR} Kf6 36. Rb5 b6 37. a4 Rb2 38. h4 h5 39. Kh2 Rf2 40. Rd5 Rf4 41. Rd7 Rxh4+ 42. Kg3 {The position is equal.} Rxb4 43. Rxa7 Rg4+ 44. Kf3 Rg5 45. Ra6 Rxf5+ 46. Kg3 Kg5 47. Rxb6 {[#] Threatens to win with Rb5.} h4+ 48. Kh3 {Strongly threatening Rb5.} Rf4 49. Rb5+ f5 {Av CentiPawn Loss W=-8/B=-7. Weighted=-9/-11} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "7.5"]
[White "Xiong, Jeffery"]
[Black "Sheng, Joshua"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2709"]
[BlackElo "2474"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,77,9,9,0,0,-9,35,39,79,74,72,87,132,45,39,-19,10,-57,-43,-79,-65,-52,-63,-134,-49,-50,87,93,110,100,105,103,108,90,173,159,182,178,158,127,128,135,123,124,222,121,129,110,129,66,58,34,32,34,455,455,455,455,455,455,446,446,446,446,445,443,785,779,814,814]} 1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. e3 e6 5. c4 Bxb1 6. Qxb1 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bb4+ 7. Kd1 O-O 8. c5 {[#] White is slightly better.} Ne4 $146 ({Predecessor:} 8... c6 9. Bd3 Nbd7 10. Ke2 Ba5 11. g4 g6 12. Qg1 b6 13. h4 bxc5 14. h5 Bc7 {0-1 (26) Caruana,F (2807)-Karjakin,S (2773) Saint Louis 2017}) 9. Qc2 c6 10. Bd3 $1 f5 11. Ke2 (11. Ne5 $1 $16) 11... Ba5 $14 12. Qb3 (12. b4 $14 Bc7 13. Bxc7 Qxc7 14. Ne5) 12... Qc8 13. g4 (13. Rhb1 $11) 13... Bc7 $15 14. Rhg1 Bxf4 15. exf4 Nd7 16. Ne5 ({Better is} 16. Rg2 $15) 16... b6 ({Black should try} 16... Nxe5 $17 17. fxe5 fxg4 18. Bxe4 dxe4 19. Rxg4 Rf3) 17. gxf5 {Black must now prevent Bxe4.} exf5 (17... Nxe5 $15 18. dxe5 (18. fxe5 Rxf5 19. Rg2 bxc5 $15) 18... Rxf5 19. Bxe4 (19. cxb6 axb6 20. Bxe4 dxe4 $11) 19... dxe4) 18. Bxe4 $1 $16 Nxe5 {[#]} 19. Bxd5+ $1 {[%mdl 512]} Nf7 (19... cxd5 20. dxe5) 20. Bc4 $1 Qd7 21. Rad1 Rae8+ (21... Kh8 $16) 22. Kf1 $18 Re4 23. d5 bxc5 24. dxc6 Qxc6 25. Bd5 Qa6+ 26. Kg2 c4 {[#]} (26... Re7 $16 {might work better.}) 27. Qf3 (27. Qc3 $1 $18) 27... Re7 $16 28. Qc3 Kh8 29. Kh1 (29. Rde1 $16 Qg6+ 30. Kh1 Rxe1 31. Rxe1) 29... Nd6 30. Rg6 Qb6 $1 {aiming for ...Ne4.} 31. Rdg1 $40 {[%cal Rg6g7][%mdl 128] Black needs to defend precisely.} Qc7 $2 {[%mdl 8192] [#] Now Black is done in.} (31... Ne4 $14 32. Bxe4 hxg6) 32. Rh6 $1 $18 {[%cal Rh6h7][%mdl 512] Threatening mate with Rxh7+!White is clearly winning.} Rff7 33. Bxf7 Rxf7 34. Re6 Qc6+ 35. f3 Qd5 36. Re5 Qa8 37. Rd1 Rf6 (37... Ne8 $142 38. Kg2 h6 39. Qxc4 Rf8) 38. Qe3 {Rxd6! is the strong threat.} h6 {[#]} 39. Rxd6 $1 {[%mdl 576] Remove Defender. Av CentiPawn Loss W=-17/B=-41. Weighted=-20/-37} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "8.1"]
[White "Sevian, Samuel"]
[Black "Sheng, Joshua"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2660"]
[BlackElo "2474"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,69,16,19,28,0,0,-27,-38,-37,29,11,31,24,38,0,0,0,65,114,143,126,145,133,124,90,105,72,63,77,160,0,0,0,23,5,7,22,29,0,0,0,164,60,328,338,321,327,422,416,406,414,359,261,681,667,1157,1093]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. c4 e6 6. Nc3 dxc4 7. Bxc4 Nd7 8. Nge2 {8.Bg5 is vanishing.} Be7 {B12: Caro-Kann: Advance Variation.} 9. Ng3 Bg6 10. Nce4 $5 {[%mdl 4] Exploring less charted territory.} Nh6 {Black has an edge.} 11. Bg5 {[#]} Qa5+ $146 (11... Bxe4 $15 12. Nxe4 Nf5) ({Predecessor:} 11... Bxe4 12. Nxe4 Nf5 13. Qd2 Nb6 14. Bd3 Qxd4 15. Bxe7 Kxe7 16. O-O Rad8 17. Rad1 Qxe5 {1-0 (46) Fernando,D (2238)-Fernandes,P Lisbon 1999}) 12. Kf1 $1 $11 Rd8 13. Qb3 $36 {[%mdl 2048] Black is under pressure.} Nb6 14. Bxe7 Kxe7 15. Nd6 Ng4 ({Better is} 15... Nxc4 $11 16. Qxc4 Rd7) 16. Be2 $14 Rd7 17. Bxg4 $1 hxg4 18. h5 Bh7 19. Qe3 Rg8 20. Qg5+ Kf8 {Threatens to win with ...Rxd6!} 21. Qxg4 Qd5 {[#]} (21... Qd2 $142) 22. h6 $2 ({White should try} 22. Ne2 $1 $16) 22... Nc4 $1 $11 23. Nxc4 Qxc4+ 24. Kg1 {aiming for Qg5.} Rxd4 25. Qg5 {Strongly threatening Nh5.} Qd5 $1 26. Rh4 Rxh4 $1 27. Qxh4 g5 $2 {[#]} (27... gxh6 $11 28. Qxh6+ Rg7) 28. Qa4 (28. Qb4+ $1 $18 c5 29. Qe1) 28... Qxe5 $2 {[%mdl 8192] This move loses the game for Black.} ({Black should play} 28... Rg6 $1 $14) 29. Qb4+ $18 {[%mdl 64] Double Attack} ({Much less strong is} 29. Qxa7 $6 Qc7 $18) 29... c5 30. Qxb7 {Rd1 is the strong threat.} Qd5 31. Qxa7 Rg6 32. Qb8+ Ke7 33. Qc7+ Ke8 $2 {[#]} (33... Kf8 34. Qc8+ Ke7 35. Qc7+ Kf8 36. Qc8+ Ke7 37. Qc7+) 34. Ne4 $1 {[%mdl 512] And now Nd6+ would win.} Qd7 (34... Qxe4 35. Rd1) 35. Qxc5 {Av CentiPawn Loss W=-21/B=-62. Weighted=-27/-68} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "8.2"]
[White "Yoo, Christopher Woojin"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "A15"]
[WhiteElo "2455"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,94,0,0,0,0,0,0,0,0,0,0,0,9,0,0,-20,-15,-13,-6,-9,-9,-8,0,-6,0,-8,0,-17,0,-14,-14,-14,0,0,0,0,0,0,0,0,0,-3,0,0,0,-629,-629,-607,-607,-581,-592,-552,-545,-490,-490,-29960,-29965,-29962,-29964,-6070,-6070,-29987,-29988,-29988,-29989,-29989,-29990,-29990,-29991]} 1. Nf3 Nf6 2. c4 b6 3. g3 c5 4. Bg2 Bb7 5. O-O g6 6. b3 Bg7 7. Bb2 O-O 8. Nc3 Na6 9. d4 d5 10. dxc5 Nxc5 11. Nxd5 Nxd5 12. Bxg7 Kxg7 13. cxd5 Qxd5 14. Qxd5 Bxd5 15. Rfd1 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} Rfd8 16. Ne5 Bxg2 17. Kxg2 {The position is equal.} Kf6 18. f4 Ke6 19. Kf3 {[#]} Rac8 $5 $146 {[%mdl 8] An interesting novelty.} ({Predecessor:} 19... f6 20. Nc6 Rd6 21. Nd4+ Kf7 22. Nb5 Rxd1 23. Rxd1 a6 24. Nc7 Rc8 25. Nd5 Rd8 {½-½ (31) Korpa,B (2546)-Nagy,G (2489) Hungary 2020}) 20. Rac1 f6 21. Nd3 (21. Rxd8 {feels hotter.} Rxd8 22. Nc6 Rd2 23. b4 Na4 24. Nxa7 Rxa2 25. Rc7) 21... Nxd3 22. Rxc8 Ne1+ 23. Rxe1 Rxc8 $11 {[%mdl 4096] Endgame KR-KR} 24. e4 Rc3+ 25. Re3 Rc1 26. Re2 h5 27. h4 a5 28. Rd2 Rc3+ 29. Kf2 f5 30. exf5+ gxf5 31. Kg2 b5 32. Kf2 a4 33. bxa4 bxa4 34. Kg2 Rc5 35. Kf3 Rd5 36. Ke3 $2 {[%mdl 8192]} (36. Re2+ $11 Kd6 37. Re3) 36... Rxd2 $19 37. Kxd2 {KP-KP} Kd5 38. Kc3 {[#] intending Kb4.} Ke4 $1 {[%cal Re4f3] And now ...Kf3 would win.} 39. Kb4 Kf3 40. Kxa4 {Kb4 is the strong threat.} Kxg3 41. Kb4 (41. Kb5 $19 Kxf4 42. a4) 41... Kxf4 {K3P-KPP} 42. a4 Ke5 43. Kc5 Ke6 44. Kc6 f4 {Black mates.} 45. a5 f3 46. a6 f2 47. a7 f1=Q {Av CentiPawn Loss W=646/B=-1. Weighted=1363/-1} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "8.3"]
[White "Tiglon, Bryce"]
[Black "Balakrishnan, Praveen"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2393"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,62,19,19,19,14,14,14,27,22,45,23,16,0,0,0,22,-11,14,11,10,7,15,0,11,0,0,0,0,0,2,0,21,21,17,21,44,56,32,0,24,17,21,17,11,0,15,0,8,0,18]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. c3 Nd7 7. O-O c5 8. dxc5 Nxc5 {B12: Caro-Kann: Advance Variation.} 9. Nd4 Bg6 10. Be3 Nc6 11. f4 Be7 12. Nd2 O-O {[#]} 13. b4 $146 {[#] Hoping for Nxc6.} ({Predecessor:} 13. N2b3 Nxb3 14. axb3 Nxd4 15. Bxd4 a5 16. Bd3 Qd7 17. Bxg6 fxg6 18. c4 dxc4 19. bxc4 {½-½ (71) Frolyanov,D (2563)-Ponkratov,P (2608) Khanty-Mansiysk 2017}) 13... Ne4 14. Nxe4 {Strongly threatening Nxc6.} Bxe4 15. a4 Rc8 16. a5 Nxd4 17. Bxd4 a6 18. Qd2 f6 19. Qe3 fxe5 20. fxe5 Qd7 21. Bg4 Rxf1+ 22. Rxf1 Rf8 23. Rxf8+ Bxf8 24. Bc5 Qc6 25. Bxf8 Kxf8 26. Qf4+ Ke8 27. h3 Ke7 {The position is equal.} 28. Qg5+ Kf7 29. Qf4+ Ke7 30. Qg5+ Kf7 31. Qf4+ Ke7 {Av CentiPawn Loss W=-5/B=-7. Weighted=-5/-7} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "8.4"]
[White "Burke, John M"]
[Black "Jacobson, Brandon"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2538"]
[BlackElo "2487"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,97,39,68,47,64,31,38,35,30,43,25,27,52,55,44,56,61,54,41,38,49,36,52,29,39,37,40,43,71,75,77,71,76,76,118,120,127,126,145,48,67,78,97,106,99,99,101,93,115,12,26,16,26,15,12,17,24,12,20,36,60,66,70,7,140,122,124,127,137,137,246,260,257,252,568,575,1143,1154,1125,1114,1104,318,1103,1089,1028,1003,29964,29965,5222,4802]} 1. e4 {Marin,M} d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 g6 6. Nb5 {B01: Scandinavian Defence.} Qb6 {6...Qb6 has become a bit dusty these days.} 7. c3 Bg7 8. Be2 {White is slightly better.} O-O 9. O-O c6 10. Na3 {[%cal Bb5a3,Ba3c4,Bc4e5][%mdl 32] [#]} Rd8 $146 ({Predecessor:} 10... Qc7 11. Bg5 Bf5 12. Qc1 Nbd7 13. Bf4 Qc8 14. Rd1 Rd8 15. Nc4 c5 16. d5 Nb6 {1-0 (64) Andreikin,D (2722)-Caruana,F (2844) Baku 2014 CBM 163 [Marin,M]}) 11. Nc4 Qc7 $1 12. Nce5 Be6 13. Ng5 Bd5 14. Bf4 {Strongly threatening c4.} Qc8 $1 15. Re1 h6 16. Ngf3 $36 {[%mdl 2048] White is pushing.} c5 $1 17. Qc1 g5 18. Be3 Nbd7 19. h4 g4 {[#]} 20. Nh2 $1 cxd4 21. Bxd4 h5 22. Nxd7 Qxd7 23. Qg5 Be6 24. Bxf6 (24. Bd1 $16) 24... exf6 $14 25. Qxh5 {[%cal Rh2g4]} f5 26. Nf1 Qe7 {[#]} 27. Bc4 $1 {[%mdl 512] And now Bxe6 would win.} Qf6 (27... Bxc4 28. Rxe7) 28. Bb3 Rd6 29. Qg5 (29. Rad1 $16 Rad8 30. Rxd6 Rxd6 31. Bxe6 fxe6 32. Qe8+ Bf8 33. Qc8) 29... Qxg5 $11 30. hxg5 Kh7 31. f4 gxf3 32. gxf3 Rad8 33. Kf2 Kg6 34. f4 Rb6 35. Re2 Bf8 36. Bxe6 ({White should try} 36. Nh2 $14) 36... fxe6 (36... Rxe6 $11 37. Rxe6+ fxe6) 37. Rae1 Kf7 38. Nh2 Bd6 39. Kg3 Bc7 (39... Bf8 $16 {was necessary.} 40. Nf3 Rd3) 40. Nf3 $18 Rd3 41. Rh1 {Black must now prevent Rh7+.} Kg7 $2 (41... Rc6 {is tougher.} 42. Rh7+ Kf8) 42. Reh2 Rc6 43. Rh7+ Kf8 44. Rh8+ Kg7 45. R1h7+ Kg6 46. Re7 {[%csl Gg5][%cal Rh8h6]} Bxf4+ 47. Kxf4 {[%csl Gg5][%cal Rh8h6]} Rc4+ {[#]} 48. Kg3 $1 {[%csl Gg5][%cal Rh8h6]} Rg4+ {[#]} 49. Kf2 $1 {Av CentiPawn Loss W=-18/B=503. Weighted=-12/173} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "8.5"]
[White "Shen, Christopher"]
[Black "Checa, Nicolas"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "2354"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,120,8,22,0,5,17,26,25,26,6,12,12,18,-41,-10,-16,20,10,42,-18,6,-58,-56,-52,-53,-60,-43,-85,-72,-72,-14,-19,-14,-10,-11,-14,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-106,-101,-102,0,-97,0,0,0,-462,-63,-242,-236,-222,-219,-460,0,-87,-81,-81,0,-70,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-5,0,-398,-350,-446,-430,-678,-684,-618,-583,-29980,-29981,-29982,-29982,-29992,-29993,-29993,-29994,-29997,-29998]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 a6 7. Qb3 {7.Rc1 is the modern continuation. D13: Slav Defence: Exchange variation without ...Bf5.} Na5 8. Qc2 e6 9. e3 {White has an edge.} Bd7 {[#]} 10. Be2 $146 ({Predecessor:} 10. h3 Rc8 11. Bd3 b5 12. a3 Bc6 13. O-O Bd6 14. Bg5 h6 15. Bh4 {½-½ (100) Menezes,C (2402)-Mroziak,M (2359) Krakow 2017}) 10... Rc8 11. O-O Ne4 12. a3 (12. Bd3 $11) 12... Be7 13. Bd3 Nxc3 14. bxc3 Nc4 15. Qb3 ({White should try} 15. a4 $14) 15... b5 16. Bxc4 (16. Qc2 $11) 16... Rxc4 $15 17. Ne5 Ra4 $1 18. Nd3 Qa5 19. Nc5 Bxc5 20. dxc5 O-O (20... Rc4 $17) 21. Bd6 $11 Rc8 22. Rfd1 Rc4 23. Rac1 Bc6 24. Rd4 f6 25. Rxc4 dxc4 26. Qb4 Qd8 27. f3 Qe8 28. Qa5 h5 29. Rd1 Kh7 30. h4 ({But not} 30. Qxa6 Ra8 $17) 30... e5 31. Kh2 e4 32. f4 Qd7 33. Rd4 (33. Rf1 $11) 33... Qg4 $17 34. Qxa6 Qxh4+ 35. Kg1 Qe1+ (35... Qg4 $1 $17) 36. Kh2 $11 Bd7 37. Be7 $2 {[%mdl 8192]} (37. Qb7 $11 {and White has nothing to worry.} Bf5 38. Qf7) 37... Qh4+ (37... h4 $142 38. Qb7 Qg3+ 39. Kh1 Qe1+ 40. Kh2 Qg3+ 41. Kh1 h3 42. Qxe4+ f5) 38. Kg1 $19 Bf5 $1 {aiming for ...Qe1+.} 39. Rd5 Bg4 40. Qb7 $2 {[#]} (40. Bxf6 {is the only way for White.} Qxf6 41. Rxh5+ $1 {[%mdl 512]} Kg8 42. Qb7) 40... Kh6 $2 {[#]} (40... Qg3 $1 $19 {[%mdl 512]} 41. Kh1 Qh4+ 42. Kg1 Qe1+ 43. Kh2 Qh4+ 44. Kg1) 41. Rd4 (41. Bxf6 $1 $11 {[%mdl 512]} Qe1+ (41... gxf6 42. Qf7) 42. Kh2 gxf6 43. Qf7 Qh4+ 44. Kg1) 41... Qe1+ $17 42. Kh2 Qh4+ ({Wrong is} 42... Qxc3 $2 43. Bxf6 $1 {[%mdl 512]} gxf6 44. Qf7 $18) 43. Kg1 Qg3 ({Better is} 43... Kg6 $1 $15 44. Bd6 Bf5) 44. Qxe4 $11 Re8 {Hoping for ...Rxe7!} 45. Rd8 Rxd8 46. Bxd8 Qe1+ 47. Kh2 Qh4+ 48. Kg1 Qe1+ {[%mdl 64] Double Attack} 49. Kh2 Qxc3 50. c6 Qd2 51. c7 c3 52. f5 $2 {[%mdl 8192] [#]} (52. Bxf6 $1 $11 gxf6 53. Qe7) 52... Qd6+ $1 $19 53. Kg1 Qc5 54. Qe7 (54. Qf4+ $142 Kh7 55. Be7) 54... Qc6 {...Bh3! is the strong threat.} 55. Qf8 Bxf5 {( -> ...c2)} 56. Qh8+ Kg6 {Black mates.} 57. e4 Bg4 58. Qf8 c2 59. Kh2 c1=Q 60. Qe7 Qf4+ {[%mdl 64] Double Attack. Av CentiPawn Loss W=-60/B=-23. Weighted=-96/-35} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "9.1"]
[White "Checa, Nicolas"]
[Black "Sevian, Samuel"]
[Result "0-1"]
[ECO "D97"]
[WhiteElo "2527"]
[BlackElo "2660"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,132,18,24,22,18,0,0,0,0,0,0,0,0,0,-199,-203,-197,-178,-197,-159,-164,-172,-230,-220,-276,-277,-281,-146,-153,-158,-140,-122,-128,-141,-144,-146,-182,-182,-182,-181,-218,-217,-219,-214,-219,-219,-933,0,0,0,-558,-30,-30,-30,-30,-30,-30,-30,-30,-30,-30,-30,-30,-29,-31,-31,-43,-31,-35,-8,-27,-27,-27,-26,-45,-43,-40,-37,-71,-71,-71,-71,-226,-218,-218,-211,-218,-218,-211,-211,-191,-191,-205,-191,-191,-191,-165,-165,-294,-291,-286,-286,-513,-438,-401,-282,-29996,-29997,-29997,-29998]} 1. d4 {Roiz,M} Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Na6 8. Be2 c5 9. d5 e6 10. O-O exd5 11. exd5 Re8 {11...Bf5 is vanishing.} 12. Rd1 Bf5 13. d6 h6 {D97: Grünfeld: Russian System: 7 e4, replies other than 7...Bg4.} 14. Be3 Ng4 15. Bf4 Bxc3 $1 {The position is equal.} 16. bxc3 Re4 17. Qb5 Rxf4 18. Qxb7 Ra4 $1 {[#]} 19. Bxa6 $146 (19. d7 $11 Nc7 20. h3) ({Predecessor:} 19. d7 Be4 20. Qb3 Bc6 21. Rd6 Bxd7 22. Rad1 Qb8 23. Rxd7 Qxb3 24. axb3 Ra2 25. Bc4 Rf8 26. R7d6 Kg7 27. Rxa6 Rxf2 28. Re1 {1-0 (28) Anand,V (2797)-Aronian,L (2777) Zuerich 2015 CBM 165 [Roiz,M]}) 19... Rb8 $19 20. Qxa7 {Strongly threatening h3.} Ra8 $36 {[%mdl 2048] Black is on the roll.} 21. Qxc5 {Black must now prevent Bb5.} R4xa6 22. h3 Nf6 23. Ne5 (23. Qd4 $142) 23... Ne4 {[%mdl 64] Double Attack} ({Worse is} 23... Rxa2 24. Rxa2 Rxa2 25. Qc7 $11) 24. Qd5 Nxd6 25. Nc6 Qe8 (25... Qb6 $19 26. Nb4 Ne4 27. Nxa6 Qxf2+ 28. Kh2 Qf4+ 29. Kg1 Qe3+ 30. Kh2 Qf4+ 31. Kg1 Qe3+ 32. Kh2 Qg3+ 33. Kg1 Rxa6) 26. Nb4 $17 Be6 27. Qd2 Nc4 28. Qxh6 Rd6 29. Rxd6 Nxd6 30. Rd1 Nb5 31. Qe3 Bc4 32. Qg3 Qe2 33. Rd7 Qe1+ 34. Kh2 Nxc3 35. Nc6 $2 (35. Rd6) 35... Qe6 $2 (35... Be6 $19 36. Rd8+ Rxd8) 36. Ne7+ $11 Kf8 {[#]} (36... Kh7 $5 37. Qh4+ $8 Kg7 38. Qd4+ {[%mdl 64] Double Attack} Kh7 39. Qh4+ Kg7 40. Qd4+ {[%mdl 64] Double Attack} Kh7 41. Qh4+ $11) 37. Rc7 $2 {[%mdl 8192]} (37. Nxg6+ $1 $11 {[%mdl 512] and White is okay.} fxg6 (37... Qxg6 38. Qxc3) 38. Qf4+ Ke8 39. Rh7) 37... Ne2 $2 {[#]} ({Better is} 37... Ne4 $19 38. Nxg6+ fxg6 39. Qf4+ Kg8) 38. Nxg6+ $1 {[%mdl 512]} Kg7 (38... Qxg6 39. Qxg6) 39. Qg5 {Nf4+ is the strong threat.} Qxg6 40. Qxg6+ Kxg6 41. Rxc4 Rxa2 {[%mdl 4096] Endgame KRN-KR} 42. h4 Kf5 43. g3 Ke5 44. Kg2 Nd4 45. Rc3 Nc2 46. Rc7 f6 47. h5 Ne1+ 48. Kg1 Kf5 49. h6 Kg6 50. h7 Ra8 51. Kf1 Nf3 52. Kg2 Ng5 53. Rc2 $2 {White does not recover from this.} (53. g4 $17) 53... Nxh7 $19 54. Rb2 Ng5 55. Re2 Nf7 56. Rb2 Ne5 57. Rc2 Nd3 {Hoping for ...Ne1+.} 58. Rd2 Ne1+ 59. Kf1 Nf3 60. Rb2 Ra1+ 61. Ke2 (61. Kg2 $142) 61... Ng1+ 62. Ke3 Ra3+ 63. Ke4 $2 (63. Kf4) 63... Nf3 64. Kf4 Ng5 {( -> ...Kh5)} 65. Rc2 $2 (65. Kg4 $19) 65... Kh5 {[%csl Gg5][%cal Ra3f3]} 66. g4+ Kg6 {Av CentiPawn Loss W=-60/B=-35. Weighted=-90/-58} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "9.2"]
[White "Jacobson, Brandon"]
[Black "Shen, Christopher"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2487"]
[BlackElo "2354"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,137,29,35,34,36,29,119,107,126,124,143,121,127,138,114,112,99,71,86,89,102,107,108,91,87,97,105,99,77,44,83,91,104,79,66,0,13,7,3,0,13,0,33,0,27,0,0,0,0,0,154,151,106,35,108,118,108,64,133,0,0,0,0,0,223,223,223,0,47,47,47,47,42,46,181,187,187,189,317,310,385,76,76,0,121,131,112,119,119,119,5093,12770,1335,1236,29970,29971,29969,29969,29968,29969,29964,29968,29968,29969,29964,29966,29971,11604,2330,8,8,8,29981,29982,29985,29987,29987,29988,29988,29989,29989,29987,29987,29988,29989,29990]} 1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 Nf6 5. h3 O-O 6. Be3 e5 7. d5 a5 8. g4 {E71: King's Indian: 4 e4 d6 5 h3.} Na6 9. Nge2 b6 (9... h5 $11 {remains equal.}) 10. Ng3 $16 {White is better.} Nc5 11. Qd2 {[#]} Kh8 $146 ({Predecessor:} 11... Bd7 12. O-O-O a4 13. f3 Ne8 14. h4 f6 15. h5 g5 16. h6 Bh8 17. Nf5 Rf7 {1-0 (50) Heimann,A (2635)-Koelle,T (2159) Dresden 2019}) 12. Be2 Ng8 13. h4 f5 14. gxf5 gxf5 15. Bg5 Bf6 16. exf5 Bxg5 17. hxg5 {aiming for g6.} (17. Qxg5 $6 Bxf5 18. Nxf5 Qxg5 $11) 17... Bxf5 18. Nxf5 Rxf5 19. g6 $1 {[%csl Gg6][%cal Rh1h7]} Nf6 20. O-O-O $1 Qe7 21. Rdg1 Rf4 22. Bd1 {Hoping for g7+.} Rg8 23. Bc2 Rg7 24. gxh7 ({White should try} 24. Kb1 $14) 24... Qf7 25. f3 Rxf3 26. Qh6 {Rxg7 is the strong threat.} Ng4 27. Qh4 $36 {[%mdl 2048] White is pushing.} Nf6 28. Rf1 Ne8 (28... Nfd7 $5 {[%cal Rf3f1]} 29. Rxf3 Qxf3 $11) 29. Rxf3 (29. Qe1 $5 {[%cal Rf1f3]} Rf4 30. Ne2 Rxf1 31. Rxf1 $14) 29... Qxf3 30. Kb1 Nf6 31. Nb5 Qf4 $2 ({Better is} 31... Nce4 $11) 32. Qh3 {White threatens Qc8+ and mate.} Qg4 {Strongly threatening ...Qxh3.} 33. Qxg4 ({White should play} 33. Qh6 $16 Nce4 34. Nxc7 Rxh7 35. Qf8+ Qg8 36. Qxg8+ Kxg8 37. Rxh7 Kxh7 38. Na8) 33... Rxg4 (33... Nxg4 $14 34. Rg1 Na6) 34. Nxc7 Rxc4 35. Nb5 Nce4 ({Don't go for} 35... Nxd5 $2 36. Nxd6 Rf4 37. Rd1 $18) (35... Nb7 $14) 36. Re1 (36. Rh6 $1 $16) 36... Rc5 37. a4 Nd2+ 38. Kc1 Nf3 $2 ({But not} 38... Rxd5 $2 39. Rd1 $18) (38... Nb3+ $1 $11 {and Black has nothing to worry.} 39. Kb1 Nd2+ 40. Kc1 Nb3+ 41. Kb1 Nd2+) 39. Rf1 $18 e4 40. Nxd6 $2 ({White has to play} 40. Nc3 $1 $18) 40... Kxh7 {Threatening ...Nd4.} (40... Nxd5 {is interesting.} 41. Rxf3 Rxc2+ 42. Kxc2 exf3 43. Nf7+ Kxh7 44. Ng5+ Kg6) 41. Nxe4 {[%mdl 64] Remove Defender} Nxe4 42. Rxf3 {[%mdl 4096] Endgame KRB-KRN} Kg7 43. Rb3 Nd6 (43... Nf6 $14) 44. Rxb6 Rxd5 45. Bb3 $1 {[%cal Rb3d5]} Rd4 (45... Rc5+ $142 46. Kd2 Nc8) 46. Ra6 Nc4 47. Rc6 $2 (47. Kc2 $18 {has better winning chances.} Rg4 48. Bxc4 (48. Kc3 Ne5 $18) 48... Rxc4+ 49. Kb3 $1 {[%mdl 512]}) 47... Ne5 $16 48. Ra6 (48. Re6 $16 Nd3+ 49. Kc2) 48... Nd3+ (48... Nc4 $1 $11) 49. Kc2 Nb4+ 50. Kc3 Rd3+ 51. Kc4 Nxa6 $4 {[%mdl 8192]} (51... Rd5 $16 52. Rb6 Rf5) 52. Kxd3 {KB-KN} Kf6 53. Kc4 Nc7 {[#]} 54. Kc5 $1 {[%cal Rc5b6]} Ke5 55. Bc4 Ne8 56. Kb6 Nd6 57. b3 Kd4 58. Kxa5 Kc5 59. Bf1 Nb7+ 60. Ka6 Nd8 61. a5 $2 (61. Bg2 $18 Ne6 62. Ka5) 61... Nc6 $1 $11 62. Bg2 {Intending Bxc6 and mate.} Nd4 $2 {[%mdl 8192]} (62... Nb4+ $11 63. Kb7 Kb5) 63. Kb7 {White mates.} Nxb3 64. a6 {[%cal Ba5a6,Ba6a7][%mdl 32]} Na5+ 65. Kc7 Nc4 66. a7 Nb6 67. Kb7 Kb5 68. Bf1+ Ka5 69. Be2 {Av CentiPawn Loss W=72/B=582. Weighted=11/473} 1-0

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "9.3"]
[White "Balakrishnan, Praveen"]
[Black "Burke, John M"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2485"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,68,8,0,18,0,0,0,9,0,15,0,5,1,39,35,35,35,35,20,16,19,4,8,23,0,32,29,38,0,0,0,6,0,0,0,3,0,15,-5,0,-31,-16,-91,-92,-89,-90,-89,-89,-86,-19,-27,-25,-25,-12,-500,-485,-543,-539]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 a6 6. Bxd7+ Bxd7 7. O-O Rc8 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} 8. c4 e5 9. Qd3 b5 {The position is equal.} 10. b3 Qc7 {[%cal Rb5c4]} 11. Nbd2 Nf6 12. Ba3 Be7 13. Rfc1 {cxb5 is the strong threat.} Qb6 14. cxb5 axb5 15. Rxc8+ Bxc8 16. Bb4 Bb7 17. Rc1 h6 {[#]} 18. Qc2 $146 ({Predecessor:} 18. a3 Nd7 19. Qe3 Qxe3 20. fxe3 Nc5 21. Nxe5 O-O 22. Nef3 Rb8 23. g3 Nxe4 24. Nxe4 Bxe4 {½-½ (31) Senzacqua,F (2154)-Heide,E (2313) ICCF email 2014}) 18... Ng4 19. Nf1 Kd7 {And now ...Rc8 would win.} 20. Qe2 Rc8 21. Rxc8 Bxc8 22. h3 Nf6 23. Ne3 g6 24. Qd3 {White wants to play Nxe5+.} Ke8 25. Nd2 Bb7 26. Qc2 Kf8 27. Kf1 (27. a3 $11 {keeps the balance.}) 27... Qd4 $17 28. Bc3 Qc5 29. b4 Qc6 {[%cal Rf6e4]} 30. f3 Bd8 (30... Qb6 $17 31. Ke2 Nh5) 31. Qd3 {Threatening Bxe5!} Bb6 32. Nb3 Nh5 {next ...f5! is good for Black.} 33. Na5 $2 {[%mdl 8192] [#]} (33. Nd5 $11 {and White has nothing to worry.}) 33... Bxa5 $1 $19 34. bxa5 {[#]} b4 $1 {[%mdl 512] Av CentiPawn Loss W=-27/B=-9. Weighted=-29/-9} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "9.4"]
[White "Xiong, Jeffery"]
[Black "Tiglon, Bryce"]
[Result "1/2-1/2"]
[ECO "D80"]
[WhiteElo "2709"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,67,21,15,21,29,27,19,18,12,17,14,16,21,7,49,7,13,-16,-4,-100,-93,-76,-92,-89,-88,-108,-122,-120,-120,-185,-186,-183,-185,-180,-173,-199,-145,-145,-145,-138,-137,-133,-93,-93,-92,-93,-6,-7,-10,-38,0,-4,-10,-29,-29,-35,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Bg7 5. Bxf6 Bxf6 6. cxd5 {D80: Grünfeld: Unusual White 4th moves and 4 Bg5.} c5 7. Nf3 cxd4 8. Nxd4 Qb6 $1 9. Nb3 O-O 10. Qd2 a5 11. Rd1 Rd8 12. e3 Nc6 13. Be2 Nb4 {[#] With the idea ...Nxa2!} 14. a3 $146 (14. Na4 $11 Qc7 15. O-O) ({Predecessor:} 14. Na4 Qa7 15. e4 Nxa2 16. O-O Bd7 17. Nac5 a4 18. Nxd7 Rxd7 19. Nd4 Bxd4 20. Qxd4 Qxd4 21. Rxd4 {½-½ (57) Yim,S (2254)-Sarkar,J (2342) Dallas 2018}) 14... Bxc3 $1 $17 15. Qxc3 Nxd5 16. Qd4 {[#] Hoping for Qxb6.} Qxb3 17. Bc4 Qc2 18. Bxd5 Be6 19. e4 (19. Rd2 $17 {was worth a try.} Qc1+ 20. Rd1) 19... Bg4 $19 {[%csl Gg4][%cal Rc2e2]} 20. f3 Qxg2 {[%mdl 64] [#] Double Attack} 21. Rf1 {Rd2 is the strong threat.} Be6 ({Resist} 21... Bxf3 22. Rd2 $17) ({Worse is} 21... Qxh2 22. fxg4 e6 23. Qf6 $11) 22. Qf2 Qxf2+ (22... Qh3 $19 23. Bxe6 Qxe6) 23. Rxf2 $17 Bxd5 24. Rfd2 e6 25. exd5 exd5 26. Rxd5 {[%mdl 4096] Endgame KRR-KRR} Re8+ 27. Kf2 Ra6 ({Better is} 27... Re6 $17) 28. Rb5 $1 $11 Re7 29. Rd2 a4 30. Rb4 Kg7 31. Kg3 Ra5 32. h4 $1 h6 33. Rdd4 Rf5 34. Rf4 {And White is the lucky defender. Av CentiPawn Loss W=-10/B=-10. Weighted=-10/-11} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "9.5"]
[White "Sheng, Joshua"]
[Black "Yoo, Christopher Woojin"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "2474"]
[BlackElo "2455"]
[Annotator "RC"]
[PlyCount "72"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+5"]

1. c4 {[%emt 0:00:05]} g6 {[%emt 0:00:05]} 2. Nc3 {[%emt 0:00:10]} Bg7 {[%emt 0:00:02]} 3. d4 {[%emt 0:00:01]} e6 {[%emt 0:00:38]} 4. Nf3 {[%emt 0:00:30]} Ne7 {[%emt 0:00:02]} 5. g3 {[%emt 0:00:05]} O-O {[%emt 0:00:04]} 6. Bg2 {[%emt 0:00:01]} d5 {[%emt 0:00:10]} 7. O-O {[%emt 0:00:09]} dxc4 {[%emt 0:00:05]} 8. Qa4 {[%emt 0:01:02]} Nbc6 {[%emt 0:02:30]} 9. Rd1 {[%emt 0:00:38]} a6 {[%emt 0:01:32]} 10. e3 {[%emt 0:02:45]} e5 {[%emt 0:06:44]} 11. dxe5 {[%emt 0:02:43]} Qe8 {[%emt 0:00:06]} 12. Qxc4 {[%emt 0:00:08]} Nxe5 {[%emt 0:03:50]} 13. Qxc7 {[%emt 0:02:15]} Bg4 {[%emt 0:00:02]} 14. Nxe5 {[%emt 0:00:24]} Bxd1 {[%emt 0:00:17]} 15. Nd7 {[%emt 0:00:30]} Qc8 {[%emt 0:03:13]} 16. Qxc8 {[%emt 0:02:02]} Rfxc8 {[%emt 0:00:26]} 17. Bxb7 {[%emt 0:00:47]} Rxc3 {[%emt 0:02:23]} 18. Bxa8 {[%emt 0:00:36]} Rc8 {[%emt 0:00:08]} 19. Bd2 {[%emt 0:02:35]} Bg4 {[%emt 0:00:44]} 20. Nb6 {[%emt 0:00:03]} Rb8 {[%emt 0:00:31]} 21. Ba5 {[%emt 0:00:08]} Bxb2 {[%emt 0:00:12]} 22. Rb1 {[%emt 0:00:01]} Be5 {[%emt 0:00:22]} 23. Be4 {[%emt 0:00:30]} Be6 {[%emt 0:00:12]} 24. Rd1 {[%emt 0:02:37]} Bxa2 {[%emt 0:00:08]} 25. Nd7 {[%emt 0:00:02]} Rb5 {[%emt 0:01:10]} 26. Bd8 {[%emt 0:00:23]} Bb3 {[%emt 0:00:41]} 27. Rd2 {[%emt 0:00:57]} Bc3 {[%emt 0:00:30]} 28. Rd6 {[%emt 0:00:22]} Nd5 {[%emt 0:00:25]} 29. Rxa6 {[%emt 0:00:17]} Kg7 {[%emt 0:00:05]} 30. Rc6 {[%emt 0:00:14]} Rb4 {[%emt 0:00:02]} 31. Bf3 {[%emt 0:00:16]} Bb2 {[%emt 0:00:09]} 32. Rc8 {[%emt 0:00:28]} Ra4 {[%emt 0:00:05]} 33. Nc5 {[%emt 0:00:08]} Ra1+ {[%emt 0:00:03]} 34. Kg2 {[%emt 0:00:01]} Ba2 {[%emt 0:00:08]} 35. Ra8 {[%emt 0:00:15]} Bc4 {[%emt 0:00:02]} 36. Rc8 {[%emt 0:00:16]} Bf1+ {[%emt 0:00:03]} 0-1

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "10.1"]
[White "Burke, John M"]
[Black "Xiong, Jeffery"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2538"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,83,6,23,10,11,15,22,20,19,-18,-2,-11,-24,-41,-20,-37,-40,-64,-30,-64,-39,-38,-36,-66,-66,-96,-93,-109,-109,-107,-28,-33,-38,-29,-33,-112,-111,-137,-131,-221,-218,-195,-37,-29,-46,-74,-71,-81,-80,-82,-79,-83,-76,-76,-72,-121,-111,-156,-137,-146,-93,-114,-77,-71,0,0,-4,-52,-48,-33,0,-74,0,-39,0,-84]} 1. e4 {Kritz,L} c5 2. Nf3 Nc6 3. Bb5 e6 4. Bxc6 bxc6 5. b3 e5 6. Nxe5 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} Qe7 7. Bb2 {Hoping for 0-0.} d6 {[#]} 8. Nf3 $146 ({Predecessor:} 8. Nc4 d5 9. Ne3 d4 10. Nc4 Qxe4+ 11. Qe2 Qxe2+ 12. Kxe2 Be6 13. d3 Nf6 14. Nbd2 {½-½ (25) Anand,V (2791)-Gelfand,B (2727) Moscow 2012 CBM 149 [Kritz,L]}) 8... Qxe4+ 9. Qe2 Qxe2+ 10. Kxe2 Ne7 11. d3 Nd5 12. Re1 f6 13. Nbd2 Kf7 (13... Nb4 $5 {[%cal Rb4c2]} 14. Kd1+ Kf7 $11) 14. Kf1 Be7 15. Nc4 a5 {[%cal Ba7a5,Ba5a4,Ba4a3][%mdl 32]} 16. Nfd2 a4 17. Ne4 Rd8 18. Nc3 Nb4 $1 19. Nb6 Ra6 (19... Ra7 $17 20. Re2 a3) 20. Nxc8 $11 Rxc8 21. Re2 $1 a3 22. Bc1 (22. Rae1 $1 $15 axb2 23. Rxe7+ Kf8 24. Rb7) 22... f5 $1 $17 23. Na4 Bf6 $36 {[%mdl 2048] Black is on the roll.} 24. c3 (24. Rb1 $17 {was called for.}) 24... Nxd3 $19 25. Bxa3 {[#]} Bxc3 $2 ({Black should try} 25... c4 $1 $19 {[%mdl 512]} 26. Rd1 (26. bxc4 Rd8) 26... c5) 26. Nxc3 $15 {Strongly threatening Rd2.} Rxa3 27. Rd2 {[#]} c4 $1 {[%mdl 512]} 28. Nb1 (28. bxc4 Rxc3) 28... Ra7 {...Nc5 is the strong threat.} (28... Ra6 {is more complex.} 29. bxc4 Nc5 30. Rb2 Ra4 31. Nd2 Rca8) 29. bxc4 {[#]} Nc5 $1 {[%cal Rc5b3] Threatens to win with ...Nb3!} 30. Rb2 Ra4 31. Nd2 Rca8 32. Ke2 Kf6 33. f4 Ra3 34. g3 Na4 (34... h6 $142 35. Rb6 Ne6) 35. Rb7 $17 Nc3+ 36. Ke1 Rxa2 ({Black should play} 36... R3a7 $17 37. Rxa7 Rxa7) 37. Rxa2 $11 Rxa2 $17 {KRN-KRN} 38. Rb6 Ra1+ 39. Kf2 Ra2 40. Ke1 Ra1+ 41. Kf2 Ra2 42. Ke1 {Av CentiPawn Loss W=-21/B=-12. Weighted=-24/-13} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "11.1"]
[White "Xiong, Jeffery"]
[Black "Burke, John M"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2709"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,106,12,9,15,0,0,0,11,12,11,0,18,8,5,18,22,22,19,27,27,8,18,17,31,5,95,79,118,114,121,87,93,61,62,60,72,50,66,21,22,20,39,22,38,20,22,22,31,14,79,75,81,65,74,21,32,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,0,0,0,2,0,6,6,6,0,6,0,6,0,6,0,6,0,6]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 bxc6 6. Bd3 Qh4 {[%csl Gc5][%cal Rh4f2] [#] C45: Scotch Game.} 7. Qe2 (7. O-O {looks sharper.} Nf6 8. Qf3 O-O 9. e5 Nd5 10. Re1) 7... Nf6 8. Be3 Bxe3 9. Qxe3 d6 10. Nd2 {[#]} (10. b3 {keeps more tension.} Ng4 11. Qf4 h6 12. Nd2 Rb8 13. Qg3) 10... Ng4 $146 ({Predecessor:} 10... O-O 11. O-O Re8 12. Qg3 Qxg3 13. hxg3 a5 14. a4 Nd7 15. Rfe1 Nc5 16. b3 g6 {0-1 (66) Stoyanov,T (2386)-Moiseenko,V (2519) Anogia 2019}) 11. Qg3 Qxg3 12. hxg3 Rb8 13. b3 O-O 14. f3 Ne5 15. Nc4 Nxc4 16. Bxc4 Be6 17. Bd3 f5 (17... a5 $11 {keeps the balance.}) 18. Kd2 Rbe8 19. Rae1 f4 20. gxf4 Rxf4 21. e5 g6 22. exd6 cxd6 23. Re3 Bd7 24. Rhe1 Rxe3 25. Kxe3 $11 {[%mdl 4096] Endgame KRB-KRB} Rf6 26. Kd4 Kf7 27. b4 Rf4+ 28. Re4 Rxe4+ 29. Bxe4 {KB-KB} Ke6 (29... h6 $11) 30. c4 $16 Be8 31. f4 h6 32. c5 (32. a4 $16) 32... g5 33. fxg5 (33. f5+ {with more complications.} Kd7 34. Ke3 dxc5 35. bxc5 Ke7 36. g4) 33... hxg5 {The position is equal.} 34. Bf3 Ke7 35. a4 Bd7 36. Be4 Ke6 37. Bd3 Ke7 38. Be2 Be8 39. Bg4 Bf7 40. Bf3 Be8 41. Be4 Bd7 42. Bd3 Be8 43. Ba6 Bd7 44. Bb7 Be8 45. Ke4 Bd7 46. Ba6 Be6 47. Kd4 Bd7 48. Bc4 Be8 49. Bd3 Bd7 50. Be4 Be8 51. Bf3 Bd7 52. Be2 Be8 53. Bd3 Bd7 {Av CentiPawn Loss W=-8/B=-8. Weighted=-8/-7} 1/2-1/2

[Event "USA-ch Juniors 2020"]
[Site "Saint Louis"]
[Date "2020.10.15"]
[Round "12.1"]
[White "Xiong, Jeffery"]
[Black "Burke, John M"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "2709"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "176"]
[EventDate "2020.10.13"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,176,11,7,0,-1,-4,10,4,16,20,12,14,12,11,24,5,15,11,15,9,37,39,36,39,54,41,50,47,47,48,39,46,177,74,79,77,77,78,114,98,131,119,120,65,94,77,106,59,139,144,153,145,191,191,191,190,190,190,190,190,183,168,165,170,192,37,32,16,21,12,50,13,20,7,9,9,62,27,40,35,29,36,30,36,100,41,153,120,175,108,189,122,135,143,602,128,158,131,191,179,1165,1165,1165,1165,1165,694,797,677,634,635,521,519,1081,587,761,749,728,693,635,634,703,639,1270,1236,1191,1142,1165,1143,29971,29969,29971,5133,29973,29974,29971,29978,29975,29976,29971,29975,29975,29975,29999,29974,29983,29970,5623,12033,29989,29990,29990,0,29990,29991,29991,29991,29992,29993,29994,29995,29997]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 O-O 8. O-O d5 9. exd5 cxd5 10. Qf3 {C47: Scotch Four Knights and Four Knights with 4 g3.} c6 11. h3 Rb8 12. Bf4 {The position is equal.} Bd6 13. b3 Re8 14. Rfe1 Be6 15. Ne2 Qc7 16. Rad1 Bxf4 17. Nxf4 Bd7 18. c4 {[#]} d4 $5 $146 {[%mdl 8] An interesting novelty.} ({Predecessor:} 18... Rxe1+ 19. Rxe1 Qd6 20. Qg3 d4 21. Nh5 Qxg3 22. Nxf6+ gxf6 23. fxg3 c5 24. Kf2 h6 {½-½ (42) Xiong,J (2709)-Le,Q (2709) Lichess.org INT 2020}) 19. Nh5 Nxh5 $1 20. Qxh5 g6 21. Qc5 Qb6 22. Qd6 $36 {[%mdl 2048] White is pushing.} Be6 23. c5 Qd8 24. Qxc6 {And now Qa4 would win.} Qg5 (24... Qa5 $1 $14) 25. Bf1 (25. Qd6 $18 {is more deadly.}) 25... Rbc8 $16 26. Qa4 Qxc5 27. Qxd4 Qc7 28. Qf6 Qe7 29. Qxe7 Rxe7 30. Rd4 ({Better is} 30. Bc4 $16) 30... Kf8 31. Ra4 Rc2 32. Ra5 Kg7 (32... Rd7 $14) 33. Bc4 Kf6 34. Ra6 h5 35. h4 Rb2 36. Re3 Rd2 37. a4 Rb2 38. Bxe6 fxe6 $18 {[%mdl 4096] Endgame KRR-KRR} 39. Rf3+ Kg7 40. Kh2 Rc2 41. b4 $2 (41. Rf4 $18) 41... Rc4 $14 {[%mdl 64] Double Attack} 42. b5 {Black must now prevent g3.} Rxh4+ 43. Kg1 Rb4 (43... Re4 {keeps more tension.} 44. Rc3 g5 45. Kh2 Re2 46. Rf3 Ra2) 44. Rc3 Kf6 45. Rc8 Rd7 46. Rf8+ Ke7 (46... Kg5 $11) 47. Rh8 Rd1+ 48. Kh2 Rh4+ 49. Kg3 Rg4+ 50. Kf3 Rd3+ 51. Ke2 Rgd4 (51... Ra3 $1 $14) 52. Rxa7+ $16 Kf6 {[#]} 53. Rf8+ (53. g3 $1 $18 {Hoping for a5.} Rd2+ 54. Kf3) 53... Ke5 (53... Kg5 $16 {is a better defense.}) 54. g3 ({White should try} 54. f4+ $18 Ke4 55. Ra6) 54... Rd2+ 55. Kf1 {Threatens to win with b6.} h4 $2 {[%mdl 8192]} (55... Rb2 $16 56. Kg2 h4) 56. gxh4 $2 (56. b6 $18 h3 57. Kg1) 56... Rd1+ 57. Kg2 {Strongly threatening b6.} Rg4+ (57... Rb1 $16 {might work better.} 58. Rc8 Kf6 59. Rf8+ Ke5) 58. Kf3 Rxh4 $2 (58... Rb4 59. Rc8 Rf4+ 60. Ke2 Ra1) 59. b6 $18 Rh3+ 60. Kg2 Rb3 61. a5 Rd4 62. b7 Rg4+ 63. Kf1 Rb1+ 64. Ke2 Rb2+ (64... Re4+ $142 65. Kd3 Rd4+ 66. Kc2 Rdb4) 65. Kd3 Rb3+ 66. Kc2 Rgb4 67. a6 Rb2+ 68. Kd1 Rb1+ 69. Ke2 R1b2+ 70. Kf1 Rb1+ 71. Kg2 R1b3 72. Raa8 Rg4+ 73. Kf1 Rb1+ 74. Ke2 Rb2+ 75. Kd3 Rb3+ 76. Kc2 Rgb4 77. b8=Q+ Rxb8 78. Raxb8 Ra3 79. Rb5+ Kd4 80. Rb6 Kc5 81. Rfb8 Ra2+ {[#]} 82. Kb3 $1 Rxf2 83. Rb5+ Kd4 84. R5b6 $2 (84. Rd8+ {mates} Ke3 85. Re5+ Kf4 86. Rf8+ Kg3 87. Rxf2 Kxf2 88. a7 g5 89. a8=Q) 84... Ke3 $2 {[%mdl 8192]} (84... Kc5 $11 85. a7 Rf3+ 86. Ka2 Rh3 87. a8=Q Rh2+ 88. Kb1 Rh5 89. Rxe6 Re5 90. Rxe5+ Kd6 91. Qd5+ Kc7 92. Re7+ Kxb8 93. Qg8#) 85. a7 {White mates.} Rf3 86. Ka4 Kf2 87. a8=Q Re3 88. Rf8+ Ke1 {[%mdl 32768] Av CentiPawn Loss W=22/B=553. Weighted=-32/269. Sensor Board Error (Ke4/e5)?} 0-1

