[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.02"]
[Round "1.6"]
[White "Nyzhnyk, Illya"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "A22"]
[WhiteElo "2674"]
[BlackElo "2684"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,80,66,75,70,65,70,69,78,81,82,83,44,32,42,59,59,66,47,55,36,32,2,2,6,0,5,21,-13,-20,-17,-28,-50,-63,-55,-57,-44,0,0,-5,-14,-14,-2,-8,-3,0,0,3,3,4,3,16,17,23,5,11,5,6,0,8,-10,-10,-23,-23,-23,-7,-23,-23,-23,0,-4,0,0,0]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 4. Ng5 c6 5. Ngxe4 Nxe4 6. Nxe4 {[%cal Bc3e4,Be4g3,Bg3e2,Be2d4][%mdl 32] A22: English Opening: 1...e5 2 Nc3 Nf6.} d5 7. cxd5 cxd5 8. Ng3 {White is slightly better.} ({Avoid the trap} 8. Qa4+ $2 Bd7 9. Qd4 dxe4 10. Qxe4+ Be7 $19) 8... h5 {[%cal Bh7h5,Bh5h4,Bh4h3][%mdl 32] [#] aiming for ...h4.} 9. e3 h4 10. Bb5+ Nc6 11. Ne2 (11. Nh5 {looks sharper.} Bd6 12. O-O Qg5 13. Nf4 O-O 14. d4) 11... h3 12. g3 a6 13. Bxc6+ bxc6 {[#]} 14. Qa4 $146 ({Predecessor:} 14. O-O Bf5 15. d3 Qd7 16. b3 Bd6 17. Bb2 f6 18. Rc1 O-O 19. Nd4 Rac8 20. Nxf5 Qxf5 {0-1 (39) Mickiewicz,P (2308)-Harshavardhan,G (2397) Chess.com INT 2021}) 14... Qf6 15. Qf4 Qe6 16. Nd4 Qg6 {Strongly threatening ...Bd6.} 17. Qe5+ Be7 18. b4 Bd7 19. Bb2 Kd8 ({Don't take} 19... Rh5 20. Qc7 $14) 20. f4 {[%cal Bf2f4,Bf4f5][%mdl 32]} Qg4 $1 {Threatens to win with ...f6.} 21. f5 $1 Bxb4 {And now ...Re8 would win.} 22. Rf1 {Rf4 is the strong threat.} Re8 23. Ne6+ $1 fxe6 24. Rf4 {[#]} exf5 25. Rxg4 {Dancing on a razor blade.} Rxe5 26. Rxb4 Re4 27. Bd4 c5 28. Bxc5 Rxb4 29. Bxb4 $11 {[%mdl 4096] Endgame KRB-KRB} Bb5 30. Bc3 g6 31. Rb1 Kd7 32. Rb4 g5 $1 {To avoid Rh4} 33. a4 Bc6 34. Kf2 a5 35. Rb1 Bxa4 36. Ra1 Bc2 37. Rxa5 Rxa5 38. Bxa5 g4 (38... Bd3 $5 {[%cal Rg5g4]}) 39. d4 Ke6 40. Bc7 Be4 {Weighted Error Value: White=0.07 (flawless) /Black=0.05 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.02"]
[Round "1.7"]
[White "Niemann, Hans Moke"]
[Black "Robson, Ray"]
[Result "1/2-1/2"]
[ECO "A28"]
[WhiteElo "2642"]
[BlackElo "2676"]
[Annotator "TA"]
[PlyCount "141"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,141,0,0,8,10,4,9,0,2,5,14,8,7,7,7,7,25,23,14,22,21,18,13,0,25,17,32,27,25,29,39,39,33,21,57,58,46,48,43,15,15,11,9,0,3,0,50,36,28,18,0,0,135,20,265,277,285,261,237,68,51,0,0,0,0,0,0,-76,-96,-84,-92,-81,-85,-111,-45,-195,-95,-97,-93,-91,-89,-80,0,0,0,-100,-97,-101,-92,-94,-89,-97,0,-67,0,-88,-86,-75,-39,-37,-36,-34,0,0,0,-39,-39,-39,-19,-39,-35,-46,-47,-45,-46,-46,-46,-36,-34,-70,-49,-68,0,0,0,-9,0,0,0,0,0,0,0,0]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bb4 5. d3 d6 6. a3 {A28: English Opening: Four Knights Variation.} Bc5 {[%cal Bb4c5,Bc5b6,Bb6d4][%mdl 32]} 7. b4 Bb6 8. Na4 Bd4 $1 {The main line 8...Bd4 scores better than 8...Bg4.} 9. Rb1 Bg4 10. Be2 Bxf3 11. Bxf3 Qe7 12. Be3 Nd8 13. Bxd4 exd4 14. O-O O-O 15. g3 {[#]} g5 $146 ({Predecessor:} 15... Nd7 16. Bg2 g5 17. c5 Ne6 18. e5 Nxe5 19. Bxb7 Rab8 20. Bg2 g4 21. Re1 f5 22. cxd6 cxd6 {½-½ (33) Abdusattorov,N (2651)-Giri,A (2772) chess24.com INT 2022}) 16. Bg4 Nxg4 17. Qxg4 Kh8 18. f4 gxf4 19. Qxf4 Nc6 20. Qf2 Qe5 21. Nb2 {[%cal Oc4c5]} Ne7 22. c5 {And now Nc4 would win.} b5 {Prevents Nc4.} 23. cxb6 axb6 24. Nc4 Qg7 25. Qg2 b5 26. Na5 Ng6 $1 27. Rbc1 Rfc8 (27... Ne5 $11) 28. Qa2 Ne5 29. Qd5 {[%csl LRb5,LRd4]} Qg5 $1 (29... Nxd3 30. Rxc7 $1 Ne5 31. Rxc8+ (31. Qxd6 Rxc7 32. Qxc7 Qg5 $14) 31... Rxc8 32. Nb7 $16 (32. Qxb5 $2 Qh6 $19) (32. Qxd6 d3 $11)) 30. Rf4 c5 (30... f6 $1 $11 {remains equal.} 31. Rxc7 Rxc7 32. Qxa8+ Kg7) 31. Rcf1 (31. Nb7 $1 $16 {[%cal Rb7d6]} Rxa3 32. Nxd6) 31... Qe7 (31... Ra7 $1 $11 {and Black has nothing to worry.}) 32. Nb7 $1 $18 Ra6 33. Rf6 cxb4 {[%cal Ob4b3]} 34. axb4 (34. Nxd6 $18 Rxd6 35. Rxd6 bxa3 36. Rb6 (36. Qxd4 Ra8 $18)) 34... Rc2 $14 {[%cal Oe7f6]} 35. R6f2 (35. Qxb5 Qxf6 $3 {[%mdl 512]} 36. Qe8+ Kg7) (35. Rxd6 $2 Raa2 36. Rh6 (36. Rd8+ $2 Kg7 $19) 36... Qg5 37. Qd8+ Qxd8 38. Nxd8 Ng4 $19) (35. Nxd6 $2 Qxf6 $1 36. Qxe5 (36. Rxf6 $2 Ra1+ 37. Rf1 Nf3+ 38. Kh1 Rxf1#) 36... Qxe5 $19) ({White should play} 35. Na5 $1 $14 Rc1 36. Rxf7 $3 {[%mdl 512]} (36. Rxc1 Qxf6 37. Rf1 Qh6 $16) 36... Qxf7 37. Qxf7 Nxf7 38. Rxc1) 35... Rxf2 $11 36. Rxf2 Kg8 (36... Rc6 $5 37. Na5 (37. Qxb5 $2 Rc7 $19) 37... Rc3 $11) 37. Na5 {To avoid Rc6} Nxd3 38. Rc2 (38. Rf1 $11) 38... Ne5 39. Rc8+ Kg7 {Strongly threatening ...d3.} 40. Qxd4 Qf6 41. Qe3 {[#]} Nc4 (41... d5 $1 $17 {[%cal Rd5e4] White must now prevent ...dxe4.} 42. exd5 Qf5) 42. Qd3 (42. Qf4 $1 $15 Qxf4 43. gxf4) 42... d5 (42... Nxa5 43. bxa5 Rxa5 44. Qc3 Qxc3 45. Rxc3 $17) (42... Qb2 $19 {[%cal Od6d5] has better winning chances. ...d5! is the strong threat.} 43. Rc6 Ra8) 43. exd5 $17 Qa1+ 44. Qf1 Qd4+ 45. Qf2 Qd1+ (45... Qxd5 $17 {aiming for ...Rf6.} 46. Qe2 Qd4+ 47. Qf2 Qe4) 46. Qf1 $11 Qd4+ (46... Qxd5 $11 47. Qa1+ (47. Nxc4 Qd4+ 48. Qf2 Ra1+ 49. Kg2 Qd5+ 50. Kh3 Qe6+ 51. Kh4 Qxc8 $11) 47... f6 48. Rc7+ Kg6 49. Qb1+ f5 50. Nxc4 bxc4) 47. Qf2 $17 {Really sharp!} Qxd5 48. Rc5 Qd1+ 49. Qf1 (49. Kg2 $2 Re6 50. Nxc4 Re2 $19) 49... Qd4+ 50. Qf2 Qd1+ 51. Qf1 $1 (51. Kg2 $2 Re6 52. Nxc4 Re2 $19) 51... Qd4+ 52. Qf2 Ne3 {( -> ...Qd1+)} 53. Rc1 {To avoid Qd1+} Rf6 ({Don't play} 53... Qxb4 54. Qxe3 Qxa5 55. Qg5+ Rg6 56. Qe5+ Rf6 57. Qg5+ (57. Rc6 Qa7+ 58. Kh1 Qf2 $11) 57... Rg6 58. Qe5+ Rf6 59. Qg5+ (59. Rc6 Qa7+ 60. Kh1 Qf2 $11) 59... Rg6 $11) (53... Re6 $5 {[%cal Rd4d3]} 54. Rf1 Qd7 $17) 54. Nb3 Qd3 55. Nc5 $1 Qd4 56. Nb3 $1 Qd3 $40 {[%mdl 128] Black mounts an attack.} 57. Nc5 $1 Rxf2 58. Nxd3 $15 {[%mdl 4096] Endgame KRN-KRN} Rg2+ 59. Kh1 Rd2 60. Nf4 Rb2 61. Re1 Nc2 62. Re2 Rb1+ 63. Kg2 Nxb4 64. Re8 Nc6 {Threatens to win with ...b4.} 65. h4 f5 (65... Rb2+ $15 66. Kf3 b4) 66. Rc8 $11 {The position is equal.} Rb2+ 67. Kh3 Ne5 68. Rc5 Kf6 69. Nh5+ Ke6 {Hoping for ...Kd6.} 70. Nf4+ Kf6 71. Nh5+ {[%mdl 64] Remove Defender, Decoy.  Weighted Error Value: White=0.15 (very precise) /Black=0.22 (precise)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.02"]
[Round "1.8"]
[White "Lenderman, Aleksandr"]
[Black "Hakobyan, Aram"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2600"]
[BlackElo "2601"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,94,19,-2,0,-10,4,5,2,7,5,15,6,5,8,0,0,0,0,-2,-7,-12,0,0,0,0,0,0,0,-13,-14,-16,0,-6,-4,-33,-23,-30,-37,-45,-38,-44,-34,-34,-34,-37,-37,-34,-39,-73,-73,-73,-73,-73,-66,-97,-57,-97,-57,-97,-97,-97,-57,-57,-57,-57,0,-57,-57,-57,-44,-57,-57,-57,-41,-41,0,-57,0]} 1. d4 Nf6 2. c4 g6 3. g3 c6 4. Nf3 d5 5. Bg2 Bg7 6. cxd5 cxd5 7. Nc3 O-O 8. Ne5 Bf5 9. O-O Ne4 10. Qb3 Nc6 {D79: Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5).} 11. Rd1 Nxc3 ({Don't play} 11... Nxe5 12. dxe5 Nxc3 13. bxc3 $14) 12. bxc3 {[#]} e6 $146 {The position is equal.} ({Predecessor:} 12... Nxe5 13. dxe5 Bxe5 14. Rxd5 Qc7 15. Bh6 Rfc8 16. Rb5 Be6 17. Qa3 Rab8 18. Rc1 b6 {½-½ (49) Pert,N (2548)-Adhiban,B (2659) Chess.com INT 2020}) 13. Nxc6 bxc6 14. Ba3 Re8 15. Qa4 Qb6 16. e3 Qb5 17. Qxb5 cxb5 18. Bf1 Reb8 19. Rd2 Bf8 20. Bxf8 Kxf8 21. f3 g5 {[%cal Bg6g5,Bg5g4][%mdl 32]} 22. Rb2 Rc8 23. Rc1 a6 24. Kf2 Rc6 25. Ke1 h5 26. Kd2 g4 27. Be2 Rac8 28. Rb4 Ke7 29. a4 bxa4 $1 30. Rxa4 Rb8 {[#] Hoping for ...gxf3.} 31. Rb4 Rcb6 32. fxg4 hxg4 33. Bxa6 Rxb4 34. cxb4 Rxb4 $15 {[%mdl 4096] Endgame KRB-KRB} 35. Be2 Kf6 36. Rf1 Kg5 37. Rf2 Rb1 38. Rf1 Rb8 39. Rf2 f6 40. Bd1 Be4 41. Rf4 Bf5 {[#] White must now prevent ...Rb2+.} (41... f5 $5 {[%cal Rb8b2]} 42. Kc3 Kg6 $15) 42. Rf2 Rh8 43. Bb3 Be4 44. Kc3 Rc8+ 45. Kb2 Rb8 46. Kc3 Rc8+ 47. Kb2 $1 Rb8 {Weighted Error Value: White=0.07 (flawless) /Black=0.09 (flawless)} ({Black should try} 47... Rc7 $15) 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.02"]
[Round "1.9"]
[White "Dragun, Kamil"]
[Black "Swiercz, Dariusz"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2590"]
[BlackElo "2656"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,88,8,12,8,19,25,33,42,31,15,11,10,7,14,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-7,0,0,0,-20,-24,-24,-25,-25,-21,-145,-112,-129,-134,-133,-49,-50,-33,-108,-107,-186,-145,-248,-208,-304,-302,-305,-285,-270,-154,-168,-43,-221,-188,-272,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. c3 d6 6. O-O a6 7. a4 h6 8. Re1 $1 {8.Re1 scores better than 8.Nbd2. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Ba7 9. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3,Be3c4][%mdl 32]} Be6 10. Bxe6 {White is slightly better.} fxe6 11. Nf1 (11. b4 {is more complex.} O-O 12. Nc4 Ng4 13. Be3 Bxe3 14. fxe3 Nf6 15. Qb3) 11... a5 {[#]} 12. Be3 $146 ({Predecessor:} 12. Ng3 Qd7 13. Be3 Bxe3 14. Rxe3 g5 15. d4 O-O-O 16. d5 exd5 17. exd5 Ne7 18. c4 {1-0 (47) Vachier Lagrave,M (2751)-Shankland,S (2709) Saint Louis 2021}) 12... Bxe3 13. Nxe3 O-O 14. Nc4 Nd7 15. d4 Qf6 16. Re2 Qg6 17. Re3 Qf6 18. Qd2 Rf7 19. Rd1 b6 20. Qe2 Raf8 21. Rd2 exd4 22. cxd4 Qg6 23. Na3 e5 24. Nb5 (24. Nc2 {with more complications.} exd4 25. Ncxd4 Nxd4 26. Rxd4 Kh7 27. Rd5) 24... exd4 (24... Nxd4 {looks sharper.} 25. Nbxd4 exd4 26. Rxd4 Ne5 27. Nh4 Qg4) 25. Nbxd4 Nxd4 26. Nxd4 (26. Rxd4 $11 Qe6 27. Rd2) 26... Rxf2 $17 27. Qxf2 Rxf2 28. Rxf2 Ne5 (28... Kh7 $17 {Hoping for ...Nc5.} 29. Rfe2 Qf6) 29. Nf5 $1 $15 {[#] Threatens to win with Ne7+.} Qh5 {aiming for ...Ng4.} 30. h3 {Inhibits Ng4.} ({White should try} 30. Rf1 $1 $15) 30... Qd1+ $17 31. Rf1 (31. Kh2 $17 {keeps fighting.}) 31... Qxa4 $19 32. Kh2 (32. b3 $17 {might work better.} Qb4 33. Rg3) 32... g6 33. Ne7+ (33. Nxh6+ $142 Kg7 34. Ng4) 33... Kg7 34. Nd5 c6 35. Nc7 Kg8 ({Better is} 35... Qc4 $19 36. Ne8+ Kg8) 36. Ne6 Qc4 (36... g5 $19 {...Qa2 is the strong threat.} 37. Rf8+ Kh7) 37. Rf8+ ({White must play} 37. Rf6 $1 $15) 37... Kh7 38. Re8 (38. Rf6 $142) 38... Qc1 $2 (38... g5 $19 {White must now prevent ...Qc1.} 39. Re7+ Kg6) 39. Re7+ $11 {The position is equal.} Kg8 40. Re2 {[#] White threatens Rf2 and mate. Dancing on a razor blade.} Qf1 {Prevents Rf2.} 41. Re8+ Kh7 42. Re7+ Kg8 43. Re8+ Kh7 44. Re7+ Kg8 {White happily takes the draw.  Weighted Error Value: White=0.30/Black=0.24 (precise)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.02"]
[Round "1.10"]
[White "Xiong, Jeffery"]
[Black "Antipov, Mikhail Al."]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2686"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,85,0,0,0,20,-5,20,18,45,33,28,14,41,35,29,28,35,35,54,27,21,23,66,50,73,77,80,74,105,57,57,48,114,100,104,0,118,112,108,101,88,96,103,78,119,129,132,147,139,145,128,139,117,143,170,163,221,209,223,181,181,180,294,275,308,280,271,274,305,254,422,368,629,600,629,608]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qf3 bxc6 7. Nc3 {C45: Scotch Game.} Rb8 8. b3 d6 9. Bb2 {The position is equal.} Bd4 {[#]} 10. Qxf6 $146 ({Predecessor:} 10. O-O-O Qxf3 11. gxf3 Nf6 12. Rxd4 O-O 13. Ra4 a6 14. Bxa6 Bxa6 15. Rxa6 {1-0 (15) Ruiz Campos,B-Pomarez Soza,G (1830) Managua 2016}) 10... Nxf6 11. f3 Be3 12. Ke2 {[%cal Be1e2,Be2d2,Bd2c3,Bc3b2][%mdl 32]} Bd4 13. Rd1 c5 14. Kd2 Nd7 15. Ba3 Bxc3+ 16. Kxc3 Ne5 (16... Rb6 $11 {deserves consideration.}) 17. f4 $14 Nc6 18. e5 Nd4 19. Kb2 Ke7 20. c3 (20. Bc4 $16) 20... Ne6 (20... Bg4 $2 21. exd6+ Kd7 22. Re1 $18 (22. cxd4 Bxd1 23. Ba6 Bg4 $16)) 21. f5 {aiming for Bc4.} Nf8 (21... Nd8 $1 $14) 22. Re1 $16 Kd8 23. Rd1 Ke7 $1 24. Bd3 {White leaves nothing to chance now.} Nd7 25. exd6+ cxd6 26. Rhe1+ Kf6 27. g4 {Strongly threatening h4. White is more active.} Ne5 ({Black should try} 27... h5) 28. h4 $36 {[%mdl 2048] Black must now prevent Bc2. Black is under strong pressure.} h6 {[#]} 29. Bxc5 {[%mdl 512]} dxc5 (29... Nxd3+ $2 30. Rxd3 dxc5 31. Rd6+ Be6 32. fxe6 $18) 30. g5+ hxg5 31. hxg5+ Kxg5 32. Rxe5 Rh2+ {[#]} 33. Ka3 $1 c4 (33... Bd7 $142 34. Rxc5 Rc8) 34. Bxc4 $18 {Hoping for Rd8.} Bxf5 35. Bxf7 {And now Rf1 would win.} Kf6 {[#]} 36. Ra5 Rf2 (36... Rb7 {is a better defense.}) 37. Rxa7 g5 38. Bd5 g4 39. c4 Re8 40. Kb4 Ree2 $2 (40... Rb8+ {keeps fighting.} 41. Kc5 Rc8+ 42. Kd4 Rb8) 41. a4 Rd2 $2 (41... Be6 42. Ra6 Kf5 43. Bxe6+ Rxe6) 42. Rg1 Rd3 43. Rf7+ {Weighted Error Value: White=0.11 (very precise) /Black=0.27 (precise)} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.03"]
[Round "2.6"]
[White "Sevian, Samuel"]
[Black "Antipov, Mikhail Al."]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2684"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,61,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,9,0,0,-6,0,0,0,0,0,0,12,0,0,0,0,-6,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Bb5+ Nc6 9. O-O O-O 10. Bxc6 bxc6 {The position is equal.} 11. Qc2 $1 {[%mdl 4] is recently more successful than 11.Ba3. D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} cxd4 12. cxd4 Bg4 {And now ...Bxf3 would win.} 13. Ne5 Qxd4 14. Bb2 {[%cal Bc1b2,Bb2e5,Be5c3,Bc3d4,Bd4c5][%mdl 32]} Qb4 15. Rab1 Bxe5 16. Bxe5 Qa5 17. Bc3 {[#]} Qc5 $146 ({Predecessor:} 17... Qa6 18. Qd2 Be6 19. Qf4 f6 20. Rfc1 Rad8 21. h4 Rd7 22. e5 Qc4 23. Qxc4 Bxc4 24. exf6 exf6 {½-½ (37) Solomon,A (2337)-Dvoirys,S (2436) Tel Aviv 2021}) 18. Qb2 a5 19. Bd4 Qb4 20. Qa1 Qa4 21. Bc5 Rfe8 22. Rfe1 Rad8 23. Qe5 f6 24. Qg3 Be6 25. a3 Rd7 26. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Red8 27. h5 {[%mdl 1024] White has compensation.} Rd1 {[#] Strongly threatening ...Rxb1.} 28. Qc7 R1d7 29. Qg3 Rd1 {White must now prevent ...Rxb1.} 30. Qc7 R1d7 31. Qg3 {An even fight not without its subleties.  Weighted Error Value: White=0.01 (flawless) /Black=0.01 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.03"]
[Round "2.7"]
[White "Swiercz, Dariusz"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2656"]
[BlackElo "2686"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,94,0,0,0,0,6,6,0,0,0,7,7,24,0,0,0,16,16,4,6,18,12,16,11,22,13,25,29,100,4,7,0,0,-4,24,10,2,0,17,0,0,0,0,0,10,-37,-45,-100,-56,-60,-14,-25,-33,-51,-57,-55,-53,-53,-19,-87,-89,-76,-96,-114,-129,-221,-226,-198,-215,-472,-470,-387,-443,-461,-460,-1072,-1076,-1263,-1097,-12839,-9222,-12840,-12840,-12840,-1754]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 c6 6. O-O b5 $1 7. b3 {E04: Open Catalan: 5 Nf3.} cxb3 8. Qxb3 Bb7 9. Rd1 {The position is equal.} a5 10. Ne5 Be7 11. Nc3 {[%cal Oc3b5]} Qb6 12. Ne4 {[%cal Oe5f7][%mdl 1024] White has compensation.} Nd5 {[#]} 13. Bb2 $146 {[%cal Oe4c5]} ({Predecessor:} 13. Ba3 b4 14. Bb2 a4 15. Qf3 O-O 16. Rac1 Ba6 17. Nc5 Bb5 18. Bh3 Nc7 19. Qg4 {1-0 (49) Troia,E (2275)-Hermansen,R (1889) ICCF email 2015}) 13... f6 14. Nd3 a4 $132 {[%mdl 2048] Black puts up resistance} 15. Qc2 a3 16. Bc3 Na6 {To avoid Nec5} 17. Rac1 O-O 18. Ba1 Bc8 19. Qb3 Qa5 (19... Kh8 $11 {remains equal.}) 20. h4 (20. Rxc6 $16 {Black must now prevent Nd6.} Nab4 21. Rcc1) 20... Bd7 $11 21. h5 {[%cal Oh5h6]} Qa4 22. Qb1 Rad8 23. Bf3 Be8 24. Kg2 Nac7 25. Nec5 Qa8 26. e4 Nb6 27. h6 {Threatens to win with hxg7.} g5 28. Nb4 (28. Bg4 $11) 28... Nc4 $15 29. Nbd3 {Prevents e5.} (29. Bg4 $15) 29... Bg6 ({Better is} 29... Qa7 $17 {[%cal Oe6e5]} 30. Nb7 Rb8) 30. Qb3 Bf7 (30... f5 $15 31. e5 Rfe8) 31. Qc2 Na6 32. Nxa6 Qxa6 33. Qe2 Rfe8 34. Bh5 Bg6 35. Rh1 (35. Bxg6 $11 {keeps the balance.} hxg6 36. h7+ (36. Qg4 Qc8 $15) 36... Kxh7 37. f4) 35... Bxh5 $17 36. Rxh5 Qb7 37. Qg4 Qd7 {[%cal Oe6e5] aiming for ...e5!} 38. e5 {[#]} (38. Nc5 $17 {was necessary.} Bxc5 39. dxc5) 38... f5 $1 $19 39. Rxg5+ Kh8 ({Worse is} 39... Bxg5 40. Qxg5+ Kh8 41. Qf6+ Kg8 42. Qg5+ Kh8 43. Qf6+ Kg8 44. Qg5+ $11) 40. Rxf5 (40. Qh5 {was called for.} Bxg5 41. Qxg5) 40... Rg8 {[%cal Be8g8,Bg8g4,Bg4f4,Bf4f3,Bf3d3][%mdl 32]} 41. Qf3 exf5 42. Rxc4 {Black is clearly winning.} bxc4 43. Nf4 (43. d5 $142 Qxd5 44. e6+ Rg7 45. Bxg7+ Kg8 46. Ne5) 43... Rg4 44. e6 {[#]} Rxf4 $1 45. d5+ (45. Qxf4 Qd5+) 45... Kg8 46. exd7 Rxf3 47. dxc6 Rd3 {Weighted Error Value: White=0.53/Black=0.08 (flawless)} 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.03"]
[Round "2.8"]
[White "Hakobyan, Aram"]
[Black "Dragun, Kamil"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "2601"]
[BlackElo "2590"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,79,0,0,4,0,0,6,0,-14,31,25,35,4,4,10,15,0,0,6,73,76,61,58,64,50,71,67,84,83,72,87,84,87,99,78,75,88,179,179,179,179,187,187,187,185,183,178,179,100,193,144,139,126,145,129,178,150,156,156,522,460,538,519,508,503,566,561,561,471]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. O-O Nxe5 7. dxe5 Nc5 {C43: Petroff Defence: 3 d4.} 8. Be3 Nxd3 9. Qxd3 c6 {The position is equal. 9...b6 is the recent fashion.} 10. Nc3 g6 (10... Be7 $11 {is more appropriate.}) 11. Ne2 $14 Be7 12. f4 Bf5 13. Qb3 Qd7 14. Ng3 Be6 {Strongly threatening ...d4.} 15. Qd3 Bf5 (15... c5 $11 {remains equal.}) 16. Nxf5 $16 {White is more active.} Qxf5 17. Qb3 $36 {[%mdl 2048] White has the initiative.} b6 {[%cal Bb7b6,Bb6b5,Bb5b4][%mdl 32]} 18. Qa4 $1 b5 {[#]} 19. Qa6 {[#]} Qc8 $146 ({Predecessor:} 19... Qd7 20. f5 O-O 21. Rf3 Rfd8 22. Raf1 Bf8 23. fxg6 fxg6 24. Rf7 Qe6 25. Rxa7 Rxa7 26. Qxa7 Qxe5 27. Qf7+ Kh8 {1-0 (59) Petkov,M (2426)-Vardan,N (2366) Arandjelovac 2021}) 20. Qxc8+ Rxc8 21. a4 {Threatens to win with axb5.} b4 22. Bxa7 c5 23. a5 Kd7 24. Bb6 f5 (24... Kc6 $16 {was called for.}) 25. c3 $18 bxc3 26. bxc3 Kc6 27. Rf2 Ra8 28. Rd2 Bd8 29. Bxd8 Rhxd8 {[%mdl 4096] Endgame KRR-KRR} 30. Rb2 (30. Kf2 $18) 30... d4 (30... Ra6 $16) 31. Rb6+ ({White should play} 31. c4 $18) 31... Kc7 $16 {[%cal Oa8a5] [#] aiming for ...Rxa5!} 32. Rb3 $1 d3 33. Kf2 Kc6 (33... d2 $16 34. Rbb1 d1=B) 34. Ke3 d2 35. Rb6+ Kd5 $2 {This costs Black the game.} (35... Kc7 $16 {is tougher.} 36. Rbb1 d1=B) 36. Kxd2 $18 {White is clearly winning.} Ke4+ 37. Kc2 Kxf4 38. e6 Ra7 39. a6 Rda8 40. Kd3 {Weighted Error Value: White=0.07 (flawless) /Black=0.34} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.03"]
[Round "2.9"]
[White "Robson, Ray"]
[Black "Lenderman, Aleksandr"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "2676"]
[BlackElo "2600"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,73,0,8,-10,-2,0,0,0,0,0,0,8,15,4,14,21,18,25,10,0,7,7,11,0,0,0,0,0,0,0,0,-22,0,-18,3,0,209,217,225,225,224,239,217,218,220,163,231,212,252,237,235,242,240,220,351,355,302,235,29980,29981,29992,29993,29994,29995]} 1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. e3 Nf6 5. d4 cxd4 6. exd4 d5 7. h3 {A35: Symmetrical English: 2 Nc3 Nc6 3 Nf3.} Bg7 8. c5 O-O 9. Bb5 {The position is equal.} Ne4 10. O-O Nxc3 11. bxc3 Qc7 {Inhibits Bf4.} 12. Re1 Bd7 {[#]} 13. Bg5 $146 ({Predecessor:} 13. Bd3 b6 14. Ba3 Bf6 15. cxb6 axb6 16. Bb2 Na5 17. Ne5 Rfc8 18. Qe2 Rab8 19. Rac1 {½-½ (26) Reuter,E (1860)-Peglau,D (1683) Erlangen 2020}) 13... Rfe8 14. Qd2 b6 15. Bh6 Bh8 16. cxb6 axb6 17. h4 {[%cal Bh3h4,Bh4h5][%mdl 32]} Na5 18. Bd3 {[%cal Oh4h5]} Nc4 19. Bxc4 dxc4 20. h5 Bf5 21. Bf4 Qb7 22. Re3 Ra5 23. Rae1 Qa8 $2 (23... e6 $11 {and Black has nothing to worry.}) 24. Rxe7 $18 Rxe7 25. Rxe7 Bf6 26. Qe3 Bxe7 27. Qxe7 f6 (27... Rxa2 28. Qf6 Re2 29. Bh6 $18) 28. Bh6 {[%csl Gh6][%cal Re7g7] [#] To avoid Qf8} ({Don't take} 28. Qxf6 Qf8 29. Qxb6 Rxa2) 28... Ra7 29. Qxf6 b5 30. Ne5 {Threatening mate with Nc6.} Qe8 31. d5 {[%cal Bd4d5,Bd5d6][%mdl 32]} Qe7 32. Qb6 {White wants to mate with Qb8+. The board is on fire.} Ra8 {[#] To avoid Qb8+} (32... Rb7 {is a better defense.} 33. Qd4 (33. d6 $2 Rxb6 34. dxe7 Re6 $17) 33... Qd6) 33. Nc6 $1 Qd7 34. Qxb5 $40 {[%mdl 128] White has strong attack.} Bd3 $2 (34... Re8 $18) 35. d6 {White mates.} Qe6 36. Qb7 {[%csl Gh6][%cal Rb7g7]} Qe1+ 37. Kh2 {Weighted Error Value: White=0.07 (flawless) /Black=0.44} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.03"]
[Round "2.10"]
[White "Nyzhnyk, Illya"]
[Black "Niemann, Hans Moke"]
[Result "1/2-1/2"]
[ECO "A28"]
[WhiteElo "2674"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,115,0,0,4,2,5,14,0,0,-4,13,9,8,3,8,0,0,0,0,0,0,0,5,0,0,0,0,0,33,31,26,30,35,34,25,27,55,7,10,0,0,-11,0,0,0,0,21,17,16,16,20,16,16,-46,76,71,265,264,283,275,279,272,328,325,472,465,783,772,908,890,930,895,726,493,485,497,497,495,489,491,490,490,475,468,432,433,539,542,589,535,687,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bb4 5. d3 d6 6. a3 {A28: English Opening: Four Knights Variation.} Bc5 7. b4 Bb6 8. Na4 Bd4 $1 {8...Bd4 scores better than 8...Bg4.} 9. Rb1 Bg4 10. Be2 Bxf3 11. Bxf3 a6 12. Qd2 {[#]} b5 $146 ({Predecessor:} 12... Ba7 13. O-O Nd4 14. Bd1 O-O 15. Nc3 h6 16. Kh1 c6 17. f4 Qe7 18. Qe1 exf4 19. Bxf4 {1-0 (48) Abdusattorov,N (2633)-Wojtaszek,R (2686) Warsaw 2021}) 13. Nc3 bxc4 14. dxc4 Bxc3 15. Qxc3 Nd4 16. Qd3 O-O 17. Bd1 h6 18. O-O Qd7 19. f4 Qc6 20. Re1 Rfe8 21. Bb2 Ne6 22. f5 Ng5 23. Bc2 (23. Rc1 $14) 23... a5 $1 $11 24. Bc1 axb4 25. axb4 {[%cal Oc4c5]} Reb8 {[%cal Ob8b4] [#] White must now prevent ...Rxb4!} 26. h4 Ngh7 {[%cal Ob8b4]} 27. b5 Qc5+ 28. Be3 Qa3 29. c5 $36 {[%mdl 2048] White is pushing.} dxc5 30. Bb3 {[%cal Ob3f7] And now Bxf7+! would win.} (30. Qxa3 Rxa3 31. Bb3 (31. Bxc5 $2 Rc3 $19) 31... Nxe4 $15) 30... Kh8 31. Qe2 {Prevents Ng4.} ({White should try} 31. Rec1 $11) 31... Nxe4 (31... c6 $1 $15 {keeps the upper hand.} 32. Bxf7 cxb5) 32. Bc1 $16 {[%cal Be3c1,Bc1d2,Bd2c3][%mdl 32]} Nc3 $2 {[#]} (32... Qb4 $16 33. Qxe4 Qxe4 34. Rxe4 Rxb5) 33. Qe3 $1 $18 (33. Qxe5 Qb4 34. Bb2 Qd4+ 35. Qxd4 cxd4 36. Bxc3 dxc3 $14) 33... Qb4 34. Bd2 Qxh4 35. Bxc3 f6 36. Bd5 {A strong pair of Bishops.} (36. Qxc5 Ng5 37. Bd5 Qg3 $18) 36... Ra4 (36... Ng5 $142 37. Bxa8 Rxa8) 37. Qxc5 Ng5 (37... Rd8 $142 38. b6 (38. Qxc7 Rxd5 39. Qc8+ Nf8 $16) 38... cxb6 39. Qxb6 (39. Rxb6 Ng5 $16) 39... Re8) 38. Qxc7 Rf8 39. Re3 Qh5 40. Be1 {aiming for b6.} Rd4 41. b6 {[%cal Ob6b7] Strongly threatening b7!} Rxd5 42. b7 Rdd8 43. b8=Q Rxb8 44. Rxb8 Rxb8 45. Qxb8+ Kh7 46. Qd8 Qg4 47. Qd7 e4 48. Bg3 h5 {[%cal Og5f3]} 49. Kf1 Kh6 50. Bd6 $2 (50. Rc3 $18) 50... Qd1+ $11 {The position is equal.} 51. Re1 Qd3+ 52. Kg1 {[%cal Od7e8] Threatens to win with Qe8!} Qd4+ $1 53. Kh1 {[%cal Od7e8] Hoping for Qe8!} e3 {( -> ...Qh4+)} 54. Rc1 {[%cal Od7e8] White threatens Qe8! and mate.} e2 55. Qe8 {[%csl Gf5][%cal Re8g6]} Qd1+ $1 56. Kh2 {[%csl Gf5][%cal Re8g6]} Qxd6+ 57. Kh1 {[%csl Gf5][%cal Re8g6] Chess con chili.} Qd1+ $1 58. Kh2 {White really could win this.  Weighted Error Value: White=0.13 (very precise) /Black=0.29 (precise)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "3.6"]
[White "Niemann, Hans Moke"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "C81"]
[WhiteElo "2642"]
[BlackElo "2684"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,96,12,20,14,28,21,32,14,33,13,25,20,23,20,19,20,18,30,27,22,0,0,0,0,0,0,0,14,14,14,21,30,10,11,8,8,2,8,8,9,25,27,8,8,8,8,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,2,2,2,2,2,2,2,2,2]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3,Bb3c4][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 O-O 11. c4 bxc4 12. Bxc4 Bc5 13. Be3 Bxe3 14. Qxe3 Qb8 15. Bb3 Na5 {C81: Open Ruy Lopez: Keres Variation (9 Qe2).} 16. Nd4 c5 {Nowadays more popular than 16...Qb6.} 17. Nxe6 fxe6 {White is slightly better.} 18. f3 {[%cal Bf2f3,Bf3e4,Be4d5,Bd5e6][%mdl 32]} c4 19. fxe4 {[#] And now Ba4 would win.} cxb3 20. exd5 {White wants to play axb3.} bxa2 21. Rxa2 Nc4 {[%csl LRb2,LRe3,LRe5]} 22. Qd4 Qb3 23. Nc3 Rac8 {[%cal Oc4e3] [#] Hoping for ...Ne3!} 24. dxe6 Nxb2 {[#]} 25. Rb1 $146 ({Predecessor:} 25. e7 Rfe8 26. Rf1 Qxc3 27. Qxc3 Rxc3 28. Rxb2 Rc7 29. Rb6 Rcxe7 30. Rxa6 Rxe5 31. Ra2 R5e7 32. Raf2 Re6 {½-½ (32) Sjugirov,S (2663)-Bologan,V (2574) Chess.com INT 2021}) 25... Qxc3 26. Qxc3 Rxc3 27. Raxb2 $11 {[%mdl 4096] Endgame Threatens to win with e7. KRR-KRR} Re8 28. Rb6 Rc5 29. Re1 a5 30. Ra6 h6 31. Re3 Rec8 32. Rd6 a4 33. Ra6 R5c6 34. Rxa4 Rxe6 35. Kf2 Rc5 {The position is equal.} 36. Rae4 g5 37. g4 Kg7 38. h3 Rd5 39. Kg3 Kg6 40. h4 gxh4+ 41. Kxh4 Rb5 42. Re2 Rd5 43. R4e3 Rb5 44. Kg3 Kg5 45. Rh2 Rexe5 46. Rh5+ Kf6 47. Rxh6+ Kg7 48. Rxe5 Rxe5 {A balanced but interesting game.  Weighted Error Value: White=0.02 (flawless) /Black=0.01 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "3.7"]
[White "Lenderman, Aleksandr"]
[Black "Nyzhnyk, Illya"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2600"]
[BlackElo "2674"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,84,14,12,14,28,16,17,28,0,0,6,0,9,4,-1,25,0,19,0,0,-2,0,-10,-5,-5,-6,-10,-10,-22,-12,-39,-37,-64,-65,-75,-68,-76,-26,-27,-17,-35,-35,-35,-35,-56,-62,-56,-62,-70,-68,-54,-47,-55,-33,-36,-12,-22,0,0,0,0,-2,-2,0,-3,0,-29,0,-11,0,0,0,0,0]} 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 a6 6. O-O c5 7. Nbd2 {7.b3 is setting a new trend.} cxd4 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} 8. Nxd4 Bd6 9. Be2 O-O {[#]} 10. N4f3 $146 ({Predecessor:} 10. Qc2 Qc7 11. Qxc7 Bxc7 12. b3 e5 13. N4f3 Rd8 14. Bb2 Nc6 15. Rac1 {½-½ (34) Nett,P (2219)-Petrigin,M (2263) ICCF email 2016}) 10... Nc6 11. b3 Qe7 12. Bb2 Rd8 13. Qb1 h6 14. Rd1 Bc7 15. Nc4 b5 16. Nce5 Nxe5 17. Bxe5 Bb7 18. Qb2 Bxe5 19. Nxe5 b4 20. Rxd8+ Rxd8 21. Rd1 {[%cal Ba1d1,Bd1d3,Bd3d2][%mdl 32]} Ne4 22. Rd3 Nc3 23. Bf1 {[%cal Oa2a3]} Be4 24. Rd2 Qg5 (24... Qc7 $17 {And now ...Rxd2 would win.} 25. Nc4 a5) 25. Nc4 $11 Bd5 26. Nb6 a5 27. Nxd5 Rxd5 28. Bc4 Rxd2 29. Qxd2 Qf6 30. f3 {Inhibits Ne4.} g6 31. h3 h5 32. Kh1 h4 33. Kg1 Kg7 34. Kh1 Nb1 35. Qc1 Na3 {[#] ...Qc3 is the strong threat.} 36. Bd3 $1 Qc3 37. Qd1 Qb2 38. Be4 Nb5 39. Bc6 Na3 {[#] White must now prevent ...Nc2.} 40. Be4 {Inhibits Nc2. The position is equal.} Qe5 41. Qd8 Qc5 42. Qxh4 Qxe3 {Weighted Error Value: White=0.07 (flawless) /Black=0.07 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "3.8"]
[White "Dragun, Kamil"]
[Black "Robson, Ray"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2590"]
[BlackElo "2676"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,80,11,18,20,16,16,18,13,8,11,14,25,22,37,30,16,18,26,0,0,0,0,0,0,-11,0,-25,-12,-47,-48,-52,-14,-35,-5,-24,5,7,4,0,0,0,0,0,0,0,0,0,0,-63,-60,-129,-127,-145,-129,-513,-497,-500,-535,-529,-373,-537,-529,-698,-689,-12841,-12842,-12838,-12836,-12835,-12835,-29994,-29995]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. O-O a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 7. Re1 O-O 8. h3 h6 {The position is equal.} 9. Nbd2 Be6 10. Bb5 Nd7 $5 {[%mdl 4] A promising side line.} 11. Nf1 {[#] next d4 is good for White.} d5 $1 $146 {[%mdl 8] A relevant novelty.} (11... f5 {is more complex.} 12. exf5 Bxf5 13. d4 Bb6 14. Ba4 Kh8) ({Predecessor:} 11... f5 12. exf5 Bxf5 13. Ng3 Bg6 14. d4 exd4 15. cxd4 Bb6 16. a3 Nf6 17. Bc4+ Kh8 {0-1 (63) Navara,D (2758)-Deac,B (2605) Riga 2021}) 12. exd5 Bxd5 13. Ne3 Bxe3 14. Bxe3 f5 15. d4 e4 16. Nh2 Ne7 17. Bf1 Bf7 18. c4 c6 19. Bd2 Nf6 20. Bc3 a4 21. b3 b5 22. Qd2 axb3 23. axb3 bxc4 24. bxc4 Qd6 25. Reb1 Rfd8 26. Rxa8 Rxa8 27. Rb7 {[#] Threatens to win with Bb4.} Ng6 28. Qb2 {[%cal Ob7f7]} Re8 29. Qb6 ({White should play} 29. Ra7 $11) 29... e3 $15 {Strongly threatening ...exf2+. Black is more active.} 30. fxe3 (30. Qb2 $1 $15) 30... Qg3 $17 31. Nf3 {[%cal Od4d5] [#] aiming for d5!} Rxe3 32. Qd8+ $2 {[%mdl 8192] Loses the game.} (32. Be1 $17 Rxe1 33. Nxe1 Qxe1 34. Qc7) 32... Be8 $19 33. Be1 Rxe1 34. Nxe1 {[%cal Od8c7] Black must now prevent Qc7!} Qxe1 35. Qc7 (35. Qb8 {was worth a try.}) 35... Nh5 36. Rb8 Kh7 37. Kh2 Qxf1 38. Rxe8 Ngf4 {[%csl Gf4][%cal Rf1g2]} 39. Qxc6 Nf6 40. Ra8 Ne2 {Weighted Error Value: White=0.77/Black=0.08 (flawless)} 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "3.9"]
[White "Xiong, Jeffery"]
[Black "Hakobyan, Aram"]
[Result "0-1"]
[ECO "D78"]
[WhiteElo "2686"]
[BlackElo "2601"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,104,2,6,13,15,14,10,9,13,-5,-25,-10,1,-10,14,5,18,16,21,23,47,45,58,55,61,60,51,44,43,41,47,52,54,0,0,0,-3,-2,-1,-103,-52,-57,-35,-34,-34,-41,-31,-62,-75,-105,-110,-102,-104,-100,-100,-218,-207,-218,-197,-521,-521,-515,-164,-172,-173,-165,-163,-166,-170,-171,-164,-161,-139,-145,-118,-138,-143,-160,-165,-167,-173,-171,-171,-188,-188,-185,-162,-270,-262,-278,-260,-308,-306]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. c4 c6 6. O-O O-O 7. Qb3 a5 8. Rd1 {D78: Fianchetto Grünfeld: 6 0-0 c6.} a4 9. Qb4 dxc4 10. Qxc4 {The position is equal.} Bf5 11. Bf4 {[#]} Nbd7 $146 ({Predecessor:} 11... Qa5 12. Ne5 Nfd7 13. Nf3 Na6 14. Qc1 b5 15. Bh6 Rac8 16. Bxg7 Kxg7 17. a3 c5 {1-0 (46) Dreev,A (2662)-Paravyan,D (2610) Sochi 2019}) 12. Qc1 Re8 13. Nc3 a3 14. bxa3 Qa5 15. Nh4 Be6 16. Rb1 Ra7 17. Bd2 {[%cal Oc3b5]} (17. e4 $5 {[%cal Rf4d2]}) 17... Qa6 {Inhibits Nb5.} 18. e4 Bc4 19. Rb4 {And now Ra4 would win.} b5 {To avoid Ra4} 20. a4 {aiming for e5.} e5 $1 21. axb5 cxb5 22. a4 $1 {[%cal Ra4b5]} Bf8 $1 {[#]} 23. Nxb5 (23. axb5 $1 $14 Qc8 24. b6 $1) 23... Bxb4 $11 24. Nxa7 Bxd2 25. Rxd2 {[%cal Oa7b5]} Qxa4 {Strongly threatening ...exd4.} 26. d5 {[#]} Bxd5 $1 {[%mdl 512]} 27. Nc8 $15 {[#]} Qa6 $1 28. Ne7+ Rxe7 29. exd5 e4 30. d6 Re6 {[%cal Be7e6,Be6e3,Be3a3,Ba3a1][%mdl 32]} 31. Qd1 {Black converts the advantage convincingly.} e3 32. fxe3 Rxe3 33. Kh1 Ra3 $40 {[%mdl 128] ...Ra1 is the strong threat. Black wants a kill.} 34. Qe1 {[#]} (34. Bf1 $17 Qc6+ 35. Bg2) 34... Ng4 $1 $19 {Hoping for ...Ra1.} 35. Bf3 ({Wrong is} 35. Qe8+ $2 Kg7 36. Qe2 Ra1+ 37. Bf1 Rxf1+ $19) 35... Ne3 {[%cal Bg4e3,Be3f1,Bf1g3,Bg3e4,Be4f6,Bf6d7][%mdl 32]} 36. h3 $2 (36. Qg1) 36... Ra1 37. Bd1 Qf1+ $2 ({Weaker is} 37... Nxd1 38. Rxd1 Qc6+ 39. Ng2 $17) (37... Qc6+ 38. Kg1 Qc5) 38. Qxf1 Nxf1 {Pair of Knights!} 39. Rd3 {[#]} Nxg3+ $1 {[%mdl 512]} 40. Kg2 Ne4 41. Bg4 Ra2+ 42. Kg1 Nef6 43. Nf3 Kg7 44. Bxd7 Nxd7 $17 {[%mdl 4096] Endgame KRN-KRN} 45. Nd4 Ra5 46. Nc6 Rc5 47. Nb4 Kf6 48. Nd5+ Ke5 49. Nc7 Rc4 50. Ne8 (50. Kg2 $142) 50... Rd4 $19 {Black has a decisive advantage.} 51. Re3+ Kf4 52. Re2 Re4 {Weighted Error Value: White=0.24 (precise) /Black=0.13 (very precise)} 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "3.10"]
[White "Antipov, Mikhail Al."]
[Black "Swiercz, Dariusz"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2615"]
[BlackElo "2656"]
[Annotator "TA"]
[PlyCount "134"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,134,14,20,9,14,16,30,26,24,31,25,18,18,5,23,21,18,19,27,8,16,21,32,22,20,17,29,5,12,1,8,0,35,10,11,12,0,0,14,17,28,0,0,0,0,0,0,0,0,0,20,0,0,0,20,0,0,0,0,-5,-8,-8,-15,-15,0,-98,-20,-23,-29,-20,-20,-40,0,0,0,-98,-95,-85,0,0,0,0,0,0,0,-8,-8,-378,-377,-370,-163,-125,0,0,0,-133,-163,-184,-180,-948,-1054,-8128,-6449,-1839,-1605,-29960,-547,-29959,-29963,-29966,-29969,-29970,-29971,-29971,-29972,-29972,-29973,-29973,-29974,-29974,-29975,-29971,-29969]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. O-O d6 6. c3 a6 7. a4 h6 8. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1h2,Bh2g4][%mdl 32] C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Ba7 9. Re1 Be6 $5 {[%mdl 4] Exploring less charted territory.} 10. Bxe6 {White has an edge.} fxe6 11. b4 O-O 12. h3 Nh5 13. Nf1 Qf6 14. Ra2 Ne7 15. N1h2 {[#]} Ng6 $146 ({Predecessor:} 15... Nf4 16. Kh1 Qg6 17. Ng4 Rac8 18. g3 Nh5 19. Nh4 Qe8 20. Kg2 Nf6 21. Be3 Bxe3 22. Rxe3 Nxg4 23. Qxg4 {½-½ (37) Costa Trillo,V (2342)-Poell,J (2375) ICCF email 2017}) 16. Ng4 Qe7 17. d4 Nf6 18. Nxf6+ Qxf6 19. Be3 Rf7 20. Rd2 exd4 21. cxd4 Raf8 22. Nh2 Ne7 23. b5 axb5 24. axb5 Bb6 25. Ra2 {Inhibits Ba5.} Qg6 26. Qg4 d5 27. Qxg6 Nxg6 {[%cal Be7g6,Bg6h4,Bh4f5][%mdl 32]} 28. e5 Nh4 29. Rb1 Nf5 30. Nf3 g5 31. Rb4 Kg7 32. Nh2 Kg6 33. Rba4 Kg7 34. g3 Kg6 35. Ng4 Nxe3 36. Nxe3 h5 37. Kg2 Rf3 38. Rd2 h4 39. Ng4 (39. Re2 $11 {keeps the balance.}) 39... hxg3 (39... Rb3 $1 $17 {Hoping for ...hxg3.} 40. Nf6 Rxb5) 40. fxg3 $11 Rb3 {...Rff3 is the strong threat.} 41. Nf6 Rxb5 42. h4 Ra5 43. h5+ Kh6 44. Rb4 (44. Rxa5 $1 $11 Bxa5 45. Ra2) 44... Rfa8 $1 $36 {[%mdl 2048] White is under strong pressure.} 45. Kh3 Ra4 ({Black should play} 45... Ra3 $1 $17 {Threatens to win with ...Ba5.} 46. Rf2 Rd3 47. Ng4+ Kxh5) 46. Rxa4 $11 Rxa4 {[%mdl 4096] Endgame KRB-KRN} 47. Rf2 {Strongly threatening Ng4+.} Ra8 (47... Bxd4 48. Ng4+ Kg7 49. h6+ Kg8 50. Rf6 $16) (47... Rxd4 $5 48. Ra2 Rd1 $11) 48. Nd7 Kxh5 (48... Bxd4 $5 49. Rf6+ Kg7 $11) 49. g4+ Kh6 50. Nf8 $2 {[%mdl 8192] [#]} (50. Nxb6 $11 {and White has nothing to worry.} Ra3+ 51. Kh2 cxb6 52. Rf6+ Kg7 53. Rxe6) 50... Rxf8 $1 $19 51. Rxf8 Bxd4 {KR-KB} 52. Re8 Kg7 (52... Kg6 $1 $17 {[%cal Rg6f7] And now ...Kf7 would win.} 53. Rxe6+ Kf7 54. Rf6+ Ke7) 53. Re7+ $11 Kg6 54. Rxe6+ (54. Rxc7 $11 Bxe5 55. Rxb7) 54... Kf7 $17 55. Rf6+ Ke7 56. Rf5 $2 (56. Rg6) 56... Be3 $1 $19 57. Kg3 Ke6 58. Kf3 Bf4 {( -> ...c5)} 59. Ke2 b5 (59... c5 $142 60. Kd3 b5 61. Rf6+ Kxe5 62. Rb6 b4 63. Kc2 Ke4 64. Rb5 Kd4 65. Kb3 Bd6 66. Kc2 c4 67. Kc1 b3 68. Kd1 Ke4 69. Rb6 Be5 70. Ke2 b2 71. Kd2 c3+ 72. Kc2 d4 73. Rb4 Ke3 74. Rb5 d3+ 75. Kb3 b1=Q+ 76. Ka4 Qa2+ 77. Kb4 Bd6+ 78. Rc5 d2 79. Kb5 Bxc5 80. Kc6 d1=Q $1 81. Kxc5 Qdd5+ 82. Kb6 Qaa5#) 60. Kd3 c5 {[%cal Bc7c5,Bc5c4,Bc4c3][%mdl 32] Black mates.} 61. Kc2 c4 62. Rf6+ Kxe5 63. Rb6 Ke4 64. Rxb5 d4 65. Rc5 c3 66. Rc8 {[#]} Kf3 $1 67. Kd3 Be3 {Weighted Error Value: White=0.73/Black=0.28 (precise)} 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "4.6"]
[White "Sevian, Samuel"]
[Black "Swiercz, Dariusz"]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "2684"]
[BlackElo "2656"]
[Annotator "TA"]
[PlyCount "182"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,182,23,26,23,26,24,24,22,22,22,26,21,20,31,20,11,8,4,11,7,4,0,0,13,0,8,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,18,0,0,0,10,3,35,15,17,0,44,35,100,93,92,92,92,93,93,83,99,89,104,88,96,89,96,96,95,18,44,32,48,36,148,142,250,236,256,248,247,218,304,203,180,188,194,178,203,203,188,197,231,193,176,165,111,73,114,122,122,122,121,121,180,110,169,166,160,18,17,13,12,18,24,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,0,0,0,0,8,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. cxd5 exd5 5. Bf4 c6 6. e3 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} Ne7 7. Qb3 Bd6 8. Bxd6 {White has an edge.} Qxd6 9. Bd3 b6 10. Rc1 Ba6 11. Bxa6 Nxa6 {[%cal Bb8a6,Ba6c7,Bc7e6,Be6d4][%mdl 32]} 12. Nf3 {[%cal Oc3b5]} O-O 13. O-O Nc7 14. Rfe1 Ne6 {[#]} 15. Qc2 $146 ({Predecessor:} 15. Qa4 Rac8 16. b4 Rc7 17. Rc2 Rfc8 18. Rec1 h6 19. Ne5 Nf5 20. Nd3 Ng5 21. Qb3 {½-½ (41) Navara,D (2707)-Hou,Y (2595) Prague 2013}) 15... Rac8 16. Rcd1 Rfd8 17. a3 Qc7 18. e4 c5 19. exd5 Nxd4 20. Qe4 Nef5 21. Nb5 Nxb5 22. Qxf5 Nd6 23. Qc2 Re8 24. Ne5 Qe7 25. h3 h6 26. Kf1 Qc7 27. Nc6 Qd7 28. Qa4 a5 29. Qb3 Qc7 30. Kg1 c4 (30... Rxe1+ $11 31. Rxe1 Re8) 31. Qc3 Qd7 (31... a4 $1 $14) 32. Qd4 $36 {[%mdl 2048] White has strong initiative.} Qc7 33. a4 Kf8 34. Qc3 Kg8 35. Rc1 Qd7 36. Qd4 Qc7 37. Qf4 Qd7 38. Rcd1 Qc7 39. Kh1 {White is much more active.} Qd7 40. Re3 ({White should play} 40. Kh2 $16) 40... Rxe3 41. Qxe3 Re8 {Inhibits Ne7+.} 42. Qxb6 Re2 ({Better is} 42... Qf5 $1 $14) 43. Kg1 Kh7 (43... Ne4 $16) 44. Nd4 Re5 45. Nb5 $1 (45. Qxa5 Nb7 46. Qc3 Rxd5 $16) 45... Nf5 46. Qc7 (46. Qxa5 Rxd5 47. Rxd5 Qxd5 $16) 46... Qe8 47. Qxc4 ({Not} 47. Qxa5 Re2 $14) 47... Re1+ 48. Rxe1 Qxe1+ 49. Qf1 Qd2 50. Qb1 $1 ({Don't take} 50. g4 $6 Nh4 $16) 50... g6 51. Nc3 Kg7 52. Qa1 Nd6 53. Nb5 ({And not} 53. b4 Qd4 54. b5 (54. bxa5 Ne4 $11) 54... Ne4 $1 $11) 53... Ne4 54. Qf1 (54. b4+ {is interesting.} Kg8 55. Qd4 Qc1+ 56. Kh2 Qf4+ 57. g3) 54... Qxb2 (54... Qxd5 $142 55. Qe1 Kh7) 55. Qe1 $1 {[%csl LRa5,LRe4]} Qb4 56. Qxb4 axb4 {[%mdl 4096] Endgame KN-KN} 57. a5 Nc5 {[#]} (57... b3 $16) 58. Kf1 (58. Nd6 $1 $18) 58... b3 (58... Kf6 $16) 59. Ke2 $18 b2 {[#]} 60. Nc3 (60. Na3 $1 $16) 60... Kf6 $11 61. Kd1 {Strongly threatening Kc2.} Na4 $1 62. Nb1 Ke5 63. a6 {Hoping for Kc2.} Kxd5 {The position is equal.} 64. a7 Nb6 65. Kc2 Kc6 66. Kxb2 {aiming for Kc3.} Kb7 67. Kc3 Nd5+ 68. Kd4 Nf4 $1 69. Nc3 Nxg2 70. Ke5 Kxa7 71. Ne2 Kb6 72. Kf6 Kc5 73. Kxf7 Kd5 74. Kxg6 Ke4 75. Ng1 Nf4+ 76. Kxh6 {Black must now prevent Kg5.} Kf5 $1 77. f3 Kf6 $1 78. h4 Kf5 79. Kg7 Ne6+ 80. Kf7 {Ne2 is the strong threat.} Nf4 {Prevents Ne2.} 81. Kg7 Ne6+ 82. Kh7 {Threatens to win with Ne2.} Nf4 {Inhibits Ne2.} 83. Kh6 Kf6 84. h5 Kf5 85. Ne2 Nxe2 {KN-KPP} 86. Kg7 Nf4 87. h6 {White wants to mate with h7.} Ne6+ 88. Kg8 {Threatening mate with h7.} Ng5 89. h7 Nxh7 $1 90. Kxh7 Kf4 91. Kg7 Kxf3 {Black escapes into a draw.  Weighted Error Value: White=0.14 (very precise) /Black=0.15 (very precise)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "4.7"]
[White "Hakobyan, Aram"]
[Black "Antipov, Mikhail Al."]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2601"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "152"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,152,24,23,12,29,19,16,27,35,31,33,0,55,0,68,0,62,-13,36,-48,-33,-24,0,0,0,0,39,39,40,40,42,34,30,24,33,27,40,0,0,0,0,0,14,8,13,0,12,12,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6. Nbd2 {[#] C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5.} b6 $146 ({Predecessor:} 6... Be6 7. O-O Bd6 8. Nb3 O-O 9. Na5 Qc8 10. Bd2 Re8 11. Ng5 b6 12. Nxe6 Qxe6 13. Nb3 a5 {0-1 (47) So,W (2778)-Radjabov,T (2763) chess24.com INT 2021}) 7. Nc4 Nd7 $1 8. O-O f6 9. c3 Ba6 10. b4 Bd6 (10... Bxc4 $11 11. dxc4 Bd6) 11. Nh4 ({White should play} 11. Qb3 $14) 11... g6 (11... Bxc4 $11 12. dxc4 g6) 12. Bh6 ({White should try} 12. Nxd6+ $14 cxd6 13. Bh6) 12... Qe7 (12... Bxc4 $11 13. dxc4 a5) 13. g3 {White is more active.} (13. Qb3 $14) 13... Qe6 (13... Bxc4 $11 {feels stronger.} 14. dxc4 Qe6) 14. Qb3 (14. Nxd6+ $14 cxd6 15. a4) 14... Bxc4 $15 15. dxc4 a5 16. c5 $1 Qxb3 17. axb3 bxc5 18. bxa5 ({Don't play} 18. Rxa5 Kf7 $15) 18... Kf7 19. Bd2 Ra7 20. Ra3 Rb8 {[%cal Oc5c4]} 21. Ng2 c4 22. b4 c5 {[%cal Rc5b4]} 23. Ra4 cxb4 {The position is equal.} 24. cxb4 c5 {[%cal Rc5b4]} 25. b5 Rxb5 26. Ne3 Ke6 27. Raa1 Bc7 {[%cal Oc4c3]} 28. Nxc4 Nb8 29. Rfb1 Rxb1+ 30. Rxb1 Nc6 {[%cal Rc7a5]} 31. Rb5 Nd4 32. Rxc5 Nf3+ 33. Kg2 Nxd2 34. Nxd2 Bxa5 $11 {[%mdl 4096] Endgame KRB-KRN} 35. Nc4 Rc7 36. Rxc7 Bxc7 {KB-KN} 37. Ne3 f5 38. f3 Bd8 39. Kf1 fxe4 40. fxe4 h5 41. Ke2 Bb6 42. Nc4 Bd4 43. h3 Bc3 44. Ne3 Bd4 {[#] Hoping for ...Bxe3.} 45. Ng2 Bb6 46. Nh4 Kf6 47. Nf3 Ke6 48. Kd3 Bf2 49. g4 hxg4 50. hxg4 Bb6 51. Kc4 Ba5 52. Kc5 Bd8 53. Kc6 $1 Ba5 54. Ng5+ Kf6 55. Nh3 Ke6 56. Ng1 Kf6 57. Nf3 Ke6 58. Kc5 Bd8 59. Kb5 Be7 60. Kc6 Bb4 61. Ng5+ Kf6 62. Nh3 Ke6 63. Nf2 Bc3 64. Nd3 Kf6 65. Kd5 Ba1 66. Nxe5 Bxe5 67. g5+ $1 Kxg5 68. Kxe5 {[#] Kd6 would kill now. KP-KP} Kh4 $1 69. Kf6 g5 70. e5 g4 71. e6 {White threatens e7 and mate.} g3 72. e7 g2 73. e8=Q {Intending Qe3 and mate.} g1=Q {To avoid Qe3} 74. Qh8+ Kg3 {( -> ...Qd4+)} 75. Qg7+ Kf2 76. Qxg1+ Kxg1 {Weighted Error Value: White=0.12 (very precise) /Black=0.09 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "4.8"]
[White "Robson, Ray"]
[Black "Xiong, Jeffery"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2676"]
[BlackElo "2686"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,80,16,26,18,21,33,17,20,22,18,18,21,21,22,19,25,25,21,49,15,17,16,17,18,33,33,30,28,36,33,31,38,43,27,29,27,27,16,26,4,6,10,18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 c5 6. O-O Nc6 7. a3 a6 8. dxc5 Qxd1 9. Rxd1 Bxc5 10. b4 Be7 {10...Ba7 is vanishing.} 11. Bb2 O-O 12. Nbd2 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} Bd7 13. Be2 {[%cal Bc4e2,Be2d1,Bd1f3][%mdl 32]} Rfd8 14. Rac1 Be8 {[#]} 15. g3 $146 ({Predecessor:} 15. Kf1 h6 16. g3 Kf8 17. Nb3 Rxd1+ 18. Rxd1 Rc8 19. Rc1 Na7 20. Na5 Rxc1+ 21. Bxc1 {1-0 (57) Ftacnik,L (2618)-Banas,J (2348) Czech Republic 2001}) 15... Rac8 16. Nb3 Rxd1+ 17. Bxd1 Na7 18. Rxc8 Nxc8 19. Nfd2 Na7 20. Bf3 Bc6 21. e4 Nd7 22. Na5 Bf6 23. Bxf6 Nxf6 24. Be2 Kf8 25. f3 Ke7 26. Kf2 Kd6 27. Ndc4+ Kc7 $1 28. Ne5 Be8 29. Ke3 Nd7 30. Nxd7 Bxd7 $11 {[%mdl 4096] Endgame KBN-KBN. The position is equal.} 31. f4 Bb5 32. Bxb5 Nxb5 {KN-KN} 33. Nc4 Nd6 34. Kd4 Nxc4 35. Kxc4 {KP-KP} f6 36. a4 b6 37. e5 {[#] Hoping for exf6.} f5 38. b5 a5 39. Kd3 Kd7 40. Ke3 Ke7 {Weighted Error Value: White=0.04 (flawless) /Black=0.03 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "4.9"]
[White "Nyzhnyk, Illya"]
[Black "Dragun, Kamil"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2674"]
[BlackElo "2590"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,87,15,0,0,-6,0,-2,0,0,-8,0,0,0,0,4,16,12,7,7,42,25,29,31,23,20,19,20,20,36,45,44,82,86,117,110,99,101,143,122,152,150,160,162,181,168,134,101,241,185,171,164,180,187,184,135,232,165,251,244,641,635,1414,1216,29977,29978,29978,29979,29988,29989,29989,12840,12841,12841,12840,12840]} 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 d6 5. Bg2 Ne7 6. Nf3 Nbc6 7. O-O O-O 8. d3 Rb8 {[#] A21: English Opening: 1...e5 2 Nc3.} 9. Nh4 $146 ({Predecessor:} 9. Ne1 Be6 10. Nc2 Qd7 11. Re1 Bh3 12. Bh1 Ng6 13. e4 f5 14. f3 f4 15. Kf2 h5 16. Rg1 {0-1 (43) Larrea,M (2327)-Julia,E (2373) Montevideo 2011}) 9... Be6 10. f4 {And now f5 would win.} Qd7 {The position is equal.} 11. e4 exf4 12. Bxf4 Bh3 13. Bxh3 Qxh3 14. c5 Rbd8 15. d4 Qd7 16. d5 Ne5 17. Bxe5 dxe5 18. Qb3 {Prevents Qb5.} b6 19. Nf3 {[%cal Bh4f3,Bf3d2,Bd2c4,Bc4e3,Be3f5][%mdl 32]} Ng6 20. c6 Qg4 21. Rae1 Rd6 22. Qd1 Qc8 23. Nd2 Qa6 24. Qb3 Rdd8 25. Nc4 Kh8 (25... b5 $142 26. Qa3 Qxa3 27. Nxa3 a6) 26. a4 $16 {White is much more active.} f6 27. Qb4 Qc8 28. a5 h6 29. axb6 axb6 30. Ne3 Kh7 {Loses the game.} (30... Qh3 $16 {was worth a try.}) 31. Nf5 {Ra1 is the strong threat.} Nh8 32. Ra1 ({Don't do} 32. Qe7 $6 Nf7 $14) 32... Nf7 {[#]} 33. Ra7 $1 {Strongly threatening Qe7.} Nd6 34. g4 (34. Nxd6 $18 Rxd6 35. c4) 34... Rf7 (34... h5 $16 {was necessary.}) 35. Kh1 Nxf5 (35... Ne8 $142) 36. gxf5 $18 {Hoping for Rfa1.} Rg8 $2 (36... Rd6 37. Rfa1 Qe8) 37. d6 g6 38. Qc4 Rfg7 39. fxg6+ Kxg6 40. Rxc7 Rxc7 41. Rg1+ Kh7 42. Qxg8+ (42. Rxg8 $142 Qh3 43. dxc7 Qf3+ 44. Kg1 Qd1+ 45. Kg2 Qd2+ 46. Kh3 Qe3+ 47. Rg3) 42... Qxg8 43. Rxg8 Rxc6 {[#]} 44. d7 $1 {[%mdl 512] Weighted Error Value: White=0.08 (flawless) /Black=0.57} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.04"]
[Round "4.10"]
[White "Niemann, Hans Moke"]
[Black "Lenderman, Aleksandr"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2642"]
[BlackElo "2600"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,147,8,4,4,8,6,7,8,9,0,9,21,14,15,20,12,18,16,6,23,25,28,17,37,34,35,36,38,23,22,16,17,22,19,17,18,20,24,20,17,11,16,14,16,21,25,53,52,11,18,16,38,6,18,21,34,33,35,33,55,32,89,89,99,89,88,95,135,135,140,88,148,71,78,85,79,58,239,266,167,66,66,66,66,66,135,167,520,66,66,18,146,18,182,146,146,146,146,146,146,146,146,146,146,146,146,146,146,146,146,146,715,635,468,445,379,297,988,846,2300,2285,12845,12846,12846,12847,12847,12847,12850,12850]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. Qc2 c6 8. O-O Nbd7 9. Bf4 b6 10. Rd1 Bb7 11. Ne5 Nh5 {E08: Closed Catalan: Main Line: 7 Qc2.} 12. Bd2 Nhf6 13. cxd5 cxd5 {The position is equal.} 14. Nc6 Bxc6 15. Qxc6 Qb8 16. Rc1 Rc8 17. Qxc8+ Qxc8 18. Rxc8+ Rxc8 19. Nc3 {[#]} Nb8 $146 ({Predecessor:} 19... Ne8 20. Rc1 Nd6 21. e3 h5 22. h3 Nb8 23. Be1 b5 24. Bf1 b4 25. Ne2 Rxc1 26. Nxc1 {½-½ (44) Korabliov,A (2477)-Rallabandi,P (2459) ICCF email 2018}) 20. e3 Ne8 21. Bh3 {[%cal Oc3d5] White wants to play Nxd5!} Rd8 22. Nb5 a6 23. Na7 Rd7 {[#]} 24. Rc1 $1 {[%cal Oc1c8]} Rxa7 25. Rc8 {[%csl LRb8,LRe8]} Kf8 26. Rxb8 b5 27. Bf1 Bd6 28. Rc8 Ke7 29. Rc1 Rc7 30. Rd1 Nf6 31. Bd3 Ne4 32. Ba5 Rc6 33. f3 Nf6 34. Bd2 {This bishop pair is nice.} (34. e4 $14 dxe4 35. fxe4) 34... Nd7 35. Kf2 ({Much worse is} 35. Bxh7 g6 36. e4 Rc2 $15) 35... g6 36. b3 Ba3 37. Ke2 Nb6 38. g4 Nd7 39. h4 Bd6 40. Ra1 b4 (40... Ba3 $14) 41. e4 $16 dxe4 42. fxe4 e5 43. d5 Rb6 44. Rc1 Bc5 45. g5 (45. Bg5+ $142 Ke8 46. Kf3) 45... a5 (45... Kd6 $142) 46. Kf3 (46. Be3 $142 $1 Kd6 47. Rf1 Bxe3 48. Kxe3) 46... Kd6 47. Bf1 Rb7 48. Bh3 (48. Be3 $5 {[%cal Rf1h3]}) 48... Rc7 (48... Nb8 $14) 49. Bxd7 $18 Kxd7 {[%mdl 4096] Endgame [#] KRB-KRB} 50. Be3 ({Only move:} 50. Ke2 $1 $18) 50... Be7 $1 $14 51. Rxc7+ Kxc7 {KB-KB} 52. Ke2 f6 ({Better is} 52... f5 $1 $14) 53. Kd3 $16 fxg5 (53... Kd7 {is tougher.} 54. Kc4 fxg5 55. hxg5 Bd8) 54. Bxg5 $2 (54. hxg5 $18 {Threatens to win with Kc4.} Kc8 55. Bd2) 54... Kd7 $14 55. Ke2 (55. Kc4 $14 Bd6 56. Bf6) 55... Bf8 {[#]} (55... Bd8 $11) 56. Kf3 (56. Bf6 $1 $16 {[%cal Rf6e5]}) 56... h6 $2 (56... Be7 $11) 57. Be3 h5 58. Bb6 Kc8 59. Bxa5 Kb7 60. Ke2 Bd6 61. Kd3 {Hoping for Kc4.} Ka6 62. Bd8 {Black must now prevent Kc4.} Kb5 63. Bg5 Kc5 64. Bc1 Kb5 65. Bb2 Bc7 $2 {[%mdl 8192]} (65... Ka6 $16 66. Bc1 Be7) 66. a4+ bxa3 67. Bxa3 {Be7 is the strong threat.} Bd8 {Inhibits Be7.} 68. Bd6 Bxh4 $2 (68... Bf6 69. Kc3 Ka6) 69. Bxe5 $18 {White is clearly winning.} Kb4 70. Bd6+ Kxb3 71. e5 {[%cal Be4e5,Be5e6][%mdl 32]} Bg3 72. Bc7 h4 {[#]} 73. e6 $1 h3 (73... Bxc7 74. e7) 74. Bxg3 {Weighted Error Value: White=0.29 (precise) /Black=0.31} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.06"]
[Round "5.6"]
[White "Lenderman, Aleksandr"]
[Black "Sevian, Samuel"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2600"]
[BlackElo "2684"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,80,16,18,16,25,17,13,13,34,16,27,33,125,141,144,84,101,12,169,-8,0,-17,-21,0,0,0,0,-37,-12,-10,-11,-39,-39,-34,-33,-44,0,-30,0,-8,0,-126,-130,-151,-123,-160,0,-134,0,-145,-109,-285,-281,-319,-332,-313,-314,-308,-265,-285,-268,-412,-417,-430,-422,-451,-442,-451,-451,-418,-398]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O a6 7. a4 {The modern move. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Ba7 8. Re1 Ng4 9. Re2 {The position is equal.} Qf6 10. Nbd2 g5 11. d4 Rg8 {[#]} (11... exd4 $14 12. e5 Ngxe5 13. cxd4 Bxd4) 12. b4 $146 (12. h3 Nh6 $15) ({Predecessor:} 12. Nf1 exd4 13. e5 dxe5 14. cxd4 Kf8 15. h3 Nxd4 16. Nxd4 Bxd4 17. hxg4 Bxg4 18. Be3 {1-0 (41) Jakovenko,D (2698)-Mamedyarov,S (2772) Jerusalem 2019}) 12... Nd8 13. Nf1 ({Don't do} 13. h3 $6 Nh6 $14) (13. b5 $142) 13... Ne6 14. Ne3 (14. b5 $16) 14... Nf4 $2 {[#]} (14... Nxe3 $1 $11 15. Bxe3 g4 16. dxe5 dxe5) 15. Rd2 $2 (15. Nd5 $1 $18 {[%cal Rd5f6]} Nxe2+ 16. Qxe2) 15... Nxe3 $11 16. fxe3 {[#]} g4 $1 17. Ng5 {Inhibits Nh3+.} Nh3+ 18. Nxh3 gxh3 19. Raa2 {Threatens to win with Rf2.} Qh6 (19... Bg4 $5 {[%cal Rg4d1]} 20. Qb3 Be6 $11) 20. Rf2 Be6 21. Bxe6 fxe6 22. g3 O-O-O {[%cal Be8c8,Bc8b8,Bb8a7][%mdl 32]} 23. Qf1 Rdf8 {To avoid Rf6} (23... Kb8 $15 {should be considered.}) 24. b5 a5 25. Rae2 Kb8 26. Bd2 (26. Rxf8+ $1 $11 Rxf8 27. Rf2 Rxf2 28. Kxf2) 26... Bb6 $17 27. Bc1 Ka7 28. Bd2 Kb8 {Black is more active.} 29. Bc1 $1 Ka7 30. Bd2 $1 Qh5 {To avoid Rf3} 31. Bc1 $2 (31. Rxf8 $17 {is the only way for White.} Rxf8 32. Rf2 Rxf2 33. Kxf2) 31... Qg4 $19 32. Ra2 Rxf2 33. Rxf2 h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 34. Qe2 Qg6 35. Qf3 h4 36. Bd2 (36. Kh1 $142) 36... exd4 37. cxd4 e5 38. Kh1 exd4 39. exd4 hxg3 40. hxg3 Qxg3 {Weighted Error Value: White=0.29 (precise) /Black=0.24 (precise)} ({Worse is} 40... Bxd4 41. Be3 Bxe3 42. Qxe3+ b6 43. Kh2 $17) 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.06"]
[Round "5.7"]
[White "Dragun, Kamil"]
[Black "Niemann, Hans Moke"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2590"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "164"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,164,7,0,0,9,8,20,0,-12,-2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,0,0,0,27,0,0,0,0,0,6,8,7,9,12,12,70,71,74,72,117,140,121,129,132,116,142,144,156,148,199,202,211,213,261,256,250,254,356,349,397,378,370,381,474,468,414,460,562,562,805,793,768,791,1066,1221,1216,1169,1088,919,1342,668,12829,12829,5410,2473,12835,12835,12835,12834,12837,12837,12837,12837,12839,12837,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27999,27998,27998,27999,27995,27996,27996,27997,27997,27998,27997,27998,27997,27998,27998,27998,27998,27994]} 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. h3 {To avoid Bg4. C47: Scotch Four Knights and Four Knights with 4 g3.} Rb8 11. Qf3 Rb6 12. Bf4 {[#] The position is equal.} Bb7 $146 ({Predecessor:} 12... Re8 13. Nb5 Rb7 14. a3 Bf8 15. b4 c5 16. bxc5 Bxc5 17. c4 Be6 18. Bg5 Rd7 {½-½ (30) Bagi,M (2470)-Riff,J (2514) Budva 2019}) 13. Rad1 Re8 14. Qg3 Nh5 15. Bxc7 Nxg3 16. Bxd8 Rxd8 17. fxg3 {[%cal Od3c4]} Bd6 {[%csl LRb2,LRg3]} 18. Na4 Rb4 19. b3 Bxg3 20. c4 Bc7 21. Nc3 g6 22. Be2 {[%cal Rc3d5]} d4 23. Na4 (23. Nb5 $5 {[%cal Rb5c7]} Bb6 24. Bd3 $11) 23... Re8 24. Bf3 Bf4 $1 25. Nc5 $36 {[%mdl 2048] White has the initiative.} Be3+ {This bishop pair is nice.} 26. Kh2 Bxf3 27. Rxf3 {Threatens to win with a3.} f5 28. g4 Rb6 (28... fxg4 $11 29. hxg4 Kg7) 29. gxf5 $14 {Black is now going downhill.} Rf6 30. Rdf1 Bh6 (30... Bd2 $142) 31. Ne6 $16 gxf5 32. Nxd4 {White is more active.} f4 33. R1f2 Bf8 34. Re2 (34. Rxf4 $2 Rxf4 35. Rxf4 Bd6 $19) 34... Rxe2+ 35. Nxe2 {[%mdl 4096] Endgame KRB-KRN} Bd6 (35... Kf7 $16 36. Nxf4 (36. Rxf4 $2 Bd6 $19) 36... Bd6) 36. Kg2 $18 Rg6+ 37. Kf2 Rf6 38. Rd3 Kf7 39. Kf3 Ke6 (39... Ke8 $142 40. Rd5 Rh6 41. Nxf4 Rf6) 40. Rd5 Bc7 41. Nd4+ Ke7 42. Rh5 Rf7 43. b4 Kd7 44. Rd5+ Kc8 45. Ne6 {[#] aiming for Rc5.} Rf6 46. Nxc7 Kxc7 {KR-KR} 47. Rh5 h6 48. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} a6 49. Rh4 Rd6 50. Rxf4 Rd3+ 51. Kg4 {[#] Black must now prevent a5.} Ra3 52. a5 Rb3 53. c5 h5+ 54. Kh4 Kb7 55. Rf7+ Kb8 56. Rf6 Rxb4+ 57. Kxh5 Rb5 58. Rxa6 Rxc5+ 59. Kg6 {White mates.} Rc4 60. Rf6 Rh4 61. Rf3 Rh8 62. Kg5 Rg8+ 63. Kf4 Rh8 64. Kg3 Rg8+ 65. Kh2 Rh8 66. Rf5 Kc7 67. Kg3 Rg8+ 68. Kf4 Rh8 69. Kg4 ({Worse is} 69. a6 Rxh3 70. Ra5 Rh4+ 71. Kf3 Rh8 $11) 69... Rg8+ 70. Rg5 Rd8 71. Rg7+ (71. Rb5 Rg8+ 72. Rg5 Rd8 73. Rg7+ Kb8 $18) 71... Kb8 72. h4 {[%cal Bh3h4,Bh4h5][%mdl 32]} Rd4+ 73. Kg5 Rd5+ 74. Kg6 Rxa5 75. h5 Ra6+ 76. Kf7 Rh6 77. Rg5 Rc6 78. Rg6 Rc7+ 79. Kg8 Rc8+ 80. Kg7 Rc7+ 81. Kh8 Rc5 82. h6 Kc7 {Weighted Error Value: White=0.03 (flawless) /Black=0.22 (precise)} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.06"]
[Round "5.8"]
[White "Xiong, Jeffery"]
[Black "Nyzhnyk, Illya"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2686"]
[BlackElo "2674"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,68,25,0,18,10,44,17,16,0,0,0,0,0,0,0,0,0,0,-16,68,-52,-47,-57,-59,-75,-74,-70,-79,-76,-77,-125,-150,-131,-151,-134,-139,-127,-128,-151,-97,-141,-82,-150,-168,-145,-121,-185,-195,-316,-321,-391,-383]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 h5 9. Qd2 Nbd7 10. O-O-O Qc7 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 11. Kb1 Rc8 12. g3 Be7 {The position is equal.} 13. h4 b5 14. Nd5 {Prevents Nb6.} Nxd5 15. exd5 Bf5 {[%cal Rf5c2]} 16. Bd3 Bxd3 17. Qxd3 O-O {[%cal Bh8f8,Bf8e8,Be8e3][%mdl 32] [#]} 18. Rhe1 $146 ({Predecessor:} 18. g4 hxg4 19. fxg4 Qc4 20. g5 Qxd3 21. Rxd3 f5 22. gxf6 Nxf6 23. Bg5 Rc7 24. Nd2 {½-½ (24) Schuster,J (2390)-Schmelz,T (2411) ICCF email 2000}) 18... g6 (18... Bd8 $11) 19. f4 (19. g4 $14) 19... exf4 $1 $15 20. gxf4 Qc4 21. Qd2 Bxh4 22. Rf1 Rfe8 {...Nf6 is the strong threat.} 23. f5 {aiming for Rf4.} Bf6 {[%cal Oe8e3] Threatens to win with ...Rxe3!} 24. Rf4 {[#]} (24. Na5 $142 Qxc2+ 25. Qxc2 Rxc2 26. Kxc2 Rxe3 27. fxg6) 24... Qxc2+ $3 $17 {[%mdl 512]} 25. Qxc2 Rxc2 26. Kxc2 {Hoping for Rf3.} Rxe3 27. fxg6 fxg6 28. Nd2 Kg7 (28... Be5 $142 29. Re4 Rg3) 29. Rdf1 {[#]} (29. Re4 $142 Rxe4 30. Nxe4) 29... Re2 ({Black should play} 29... Re7 $1 30. Ne4 Be5) 30. Kd1 {[#]} (30. a4 $142) 30... Re7 $1 {Black is more active.} 31. Ne4 {[%cal Re4f6]} Be5 32. R4f3 (32. R4f2 $17) 32... Nb6 $19 (32... Bxb2 33. Nxd6 Nf6 34. Rg1 $17) 33. Ra3 (33. Re1 $142) 33... Bxb2 ({Not} 33... Nxd5 $2 34. Rd3 Bf4 35. Rxd5 Rxe4 36. Rd3 $19) 34. Rxa6 Nxd5 {Weighted Error Value: White=0.36/Black=0.12 (very precise)} ({Worse is} 34... Rxe4 35. Rxb6 Be5 36. Rxb5 $17) 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.06"]
[Round "5.9"]
[White "Antipov, Mikhail Al."]
[Black "Robson, Ray"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2615"]
[BlackElo "2676"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,111,16,18,18,11,13,10,24,0,24,22,8,22,17,-27,-19,-22,-28,-24,-22,-22,-4,-19,0,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-14,-11,-29,-29,-29,-29,-29,-17,-20,-13,-13,-13,-14,-8,-18,-18,-29,-29,-60,-51,-70,-70,-70,-70,-117,-117,-117,-117,-117,-117,-117,-117,-117,-117,-117,-117,-117,-117,-3127,-2400,-29965,-29967,-29967,-29968,-29971,-29971,-29971,-29972,-29974,-29976,-29974]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O d6 6. c3 O-O 7. Re1 a6 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. a4 {seems to push 8.Bb3 aside.} Ba7 9. h3 b5 {The position is equal.} 10. Bb3 b4 11. Nbd2 {[%cal Bb1d2,Bd2c4,Bc4e3,Be3d5][%mdl 32]} Rb8 12. a5 Be6 13. Bc4 (13. Ba4 $142 Nxa5 14. d4) 13... Qc8 $11 14. Ng5 Bxc4 15. Nxc4 h6 16. Nf3 Qe6 17. Be3 Bxe3 18. Nxe3 bxc3 19. bxc3 Rb5 20. c4 {[#]} Rxa5 $146 ({Predecessor:} 20... Rb7 21. Nd5 Rfb8 22. Qa4 Nb4 23. Ra3 c5 24. Rb1 Nfxd5 25. cxd5 Qg6 26. Qd1 Rb5 27. Rb2 Kh7 28. Ra1 {½-½ (27) Thierry,R (2317)-Jones,I (2334) ICCF email 2017}) 21. Nd5 Rxa1 (21... Nxd5 $2 22. cxd5 Rxa1 23. Qxa1 $18 (23. dxe6 Rxd1 24. Rxd1 fxe6 $17)) 22. Qxa1 Qc8 23. Qa4 Nxd5 24. cxd5 Ne7 25. d4 exd4 26. Nxd4 Qb7 27. Rc1 Qb6 28. Qc4 a5 29. Qxc7 Nxd5 30. exd5 Qxd4 31. Qxa5 {[%mdl 4096] Endgame KQR-KQR} g6 32. Qb5 Ra8 33. Qb3 {To avoid Ra2} Kg7 34. g3 Ra5 35. Rd1 Ra3 {aiming for ...Qxf2+.} 36. Rxd4 Rxb3 {KR-KR} 37. h4 g5 38. hxg5 hxg5 39. Kg2 Kf6 40. f3 Ke5 41. Re4+ Kxd5 42. g4 Rb6 {Threatens to win with ...Kc5.} 43. Kf2 (43. Ra4 $15) 43... Kc5 $1 $17 {...d5 is the strong threat.} 44. Re7 f6 $1 {And now ...d5 would win.} 45. f4 Rb2+ 46. Kf3 Rb3+ 47. Kf2 gxf4 48. Re4 {[#]} Re3 $1 49. Rxf4 Re6 50. Ra4 $2 {[%mdl 8192] This costs White the game.} (50. Rf5+ $17 d5 51. Rh5) 50... d5 $19 {[%cal Bd6d5,Bd5d4,Bd4d3][%mdl 32] ( -> ...d4)} 51. Ra8 d4 {Black mates.} 52. Rd8 {[#]} Kc4 $1 53. Kf3 d3 54. Kf4 Kc3 55. Kf5 Rc6 56. g5 {Weighted Error Value: White=0.35/Black=0.02 (flawless)} 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.06"]
[Round "5.10"]
[White "Swiercz, Dariusz"]
[Black "Hakobyan, Aram"]
[Result "1/2-1/2"]
[ECO "C80"]
[WhiteElo "2656"]
[BlackElo "2601"]
[Annotator "TA"]
[PlyCount "141"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,141,30,45,27,27,23,28,37,28,52,49,44,45,45,44,61,57,66,78,72,83,69,70,110,112,114,106,110,111,112,108,142,135,141,137,151,144,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,0,206,206,206,206,206,205,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,206,61,155,8,8,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Nc5 10. c3 d4 11. Bxe6 Nxe6 12. cxd4 Ncxd4 13. a4 Bb4 {The modern move. C80: Open Ruy Lopez: Sidelines and 9 Nbd2.} 14. axb5 Nxb5 (14... axb5 $2 15. Rxa8 Qxa8 16. Nxd4 Nxd4 17. Qg4 $16) 15. Nc4 O-O {White has an edge.} 16. Be3 c5 17. Qc2 {[#]} a5 $146 ({Predecessor:} 17... Nbd4 18. Qe4 Nxf3+ 19. gxf3 Nd4 20. Nd6 Qb6 21. Kg2 Rfd8 22. Rfd1 a5 23. Bg5 Rdb8 24. Qg4 Qc7 25. Rxd4 h5 26. Bf6 hxg4 27. Rxg4 {1-0 (27) Kunzelmann,F (2282)-Heiermann,L (1689) GER email 2010}) 18. Rfd1 Nbd4 19. Qe4 {[%cal Rf3d4]} Qc7 20. Nd6 {[%cal Re3d4]} Rad8 21. Bxd4 cxd4 22. Nxd4 Nxd4 23. Qxd4 Rd7 24. Rac1 Qb8 25. h4 Rfd8 {[%cal Rb4d6]} 26. Rc6 h6 27. Qd5 a4 28. Qc4 Bxd6 29. Rcxd6 Rxd6 30. exd6 {[%cal Be5d6,Bd6d7][%mdl 32]} ({Don't play} 30. Rxd6 Rxd6 31. exd6 Qxd6 $16) 30... Qxb2 (30... Rxd6 $16 31. Rxd6 (31. Qxa4 Rxd1+ 32. Qxd1 Qxb2 $11) 31... Qxd6) 31. Qxa4 $16 {[%mdl 4096] Endgame KQR-KQR} Qf6 32. d7 {[#] Black must now prevent Re1.} Qe7 {Inhibits Re1.} 33. g3 Kf8 34. Qd4 Kg8 35. Qd5 Kf8 36. Qc6 Kg8 37. Qc7 Kf8 38. Qc6 Kg8 39. Kg2 Kf8 40. Rd6 Kg8 41. Qd5 Kf8 42. Qd4 {[%cal Od6h6] Rxh6! is the strong threat.} Kg8 43. h5 Kh7 44. Qd3+ Kg8 45. Rd5 Qe6 46. Qd4 Qe7 47. g4 Kh7 48. Kf1 Kg8 49. Rd6 Kh7 50. Kg2 Kg8 51. Kf3 Qe1 52. Rd5 Qe7 53. Kg3 Kh7 54. Qd2 Kg8 55. f3 Kf8 56. Kg2 Kg8 57. Rd4 Kf8 58. f4 ({Better is} 58. Qc2 $18) 58... Kg8 {[#]} (58... Qh4 $14) 59. f5 (59. g5 $1 $16) 59... Kh7 $11 {The position is equal.} 60. Qd3 {White threatens f6+ and mate.} f6 61. Kf2 Qe5 62. Kf3 Qh2 63. Qd1 {Active counter play!} Qh3+ 64. Kf2 Qh2+ 65. Kf3 Qh3+ 66. Ke4 Qg2+ 67. Kd3 Qg3+ 68. Ke2 Qg2+ 69. Ke3 Qg3+ 70. Ke2 Qg2+ 71. Ke3 {Black defended with fortune.  Weighted Error Value: White=0.16 (very precise) /Black=0.06 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.07"]
[Round "6.6"]
[White "Sevian, Samuel"]
[Black "Hakobyan, Aram"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2684"]
[BlackElo "2601"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,107,20,7,14,0,6,18,22,0,24,13,15,0,17,0,0,0,18,14,15,30,10,18,18,29,27,20,55,60,46,56,72,61,62,64,67,55,49,52,61,48,64,49,61,73,89,81,89,69,87,78,79,81,86,65,64,0,0,0,0,0,115,0,115,115,115,115,115,129,115,115,115,115,115,115,115,115,783,115,1670,1436,1122,1084,29962,1059,29961,12271,29976,29974,29975,29974,29960,6356]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O O-O 9. Re1 Be6 {B92: Sicilian Najdorf: 6 Be2.} 10. Bf3 Qc7 11. a4 Nbd7 {The position is equal.} 12. Be3 h6 13. a5 Rfc8 14. h3 Rab8 {is currently scoring better than 14...Qc6.} 15. Ba7 Ra8 16. Be3 Rab8 17. Nd2 {[#]} Bf8 $146 ({Predecessor:} 17... Bd8 18. Nf1 b5 19. axb6 Nxb6 20. Bc1 Qd7 21. Re2 Qc6 22. Ne3 Nc4 23. Nxc4 Bxc4 24. Rd2 Bc7 25. Nd5 Bxd5 26. exd5 {½-½ (42) Shablinsky,M (2462)-Osipov,S (2499) ICCF email 2019}) 18. Nf1 b5 19. axb6 $1 Nxb6 20. Rxa6 Nc4 21. Ra7 $1 Qd8 22. b3 Nxe3 23. Rxe3 d5 24. exd5 Bc5 {[%csl LRa7,LRe3]} 25. Ra6 ({Much weaker is} 25. dxe6 Qxd1 26. exf7+ Kf8 27. Nxd1 (27. Bxd1 $2 {perishes.} Bxa7 28. Rg3 Rb4 $17) 27... Bxa7 $11) 25... Bxe3 26. Nxe3 Rxc3 27. dxe6 {[#] Strongly threatening Rd6.} Qxd1+ 28. Bxd1 fxe6 29. Rxe6 e4 30. Be2 Rc5 31. Bc4 Kf8 {Inhibits Re8+.} 32. Ra6 {Ra7 is the strong threat.} Rc7 {To avoid Ra7} 33. g4 Rd7 34. Kg2 Rdd8 35. Ra5 (35. Be6 {is more complex.} Rb7 36. h4 g6 37. Kg3 Rd2 38. Rc6) 35... g6 36. Nd5 (36. Ra7 $14 Rd7 37. Ra6) 36... Nxd5 $11 37. Bxd5 {[%mdl 4096] Endgame KRR-KRB} Re8 38. Ra7 Rbd8 (38... Re5 $11 39. Rf7+ Ke8) 39. Rf7+ $16 Kg8 40. Rd7+ Kf8 41. Rxd8 {White is more active.} Rxd8 42. Bxe4 {KR-KB} g5 43. h4 {Hoping for hxg5.} Ke7 44. hxg5 hxg5 45. f4 Kf6 46. Kf3 Rd1 $2 {[%mdl 8192] [#]} (46... Rd4 $16) 47. Bd3 $2 (47. fxg5+ $1 $18 Kxg5 48. Ke3) 47... Re1 $2 {[%mdl 8192]} (47... Rb1 $16 48. Ke3 Re1+ 49. Kd2 Re7) 48. b4 $18 {[%cal Bb3b4,Bb4b5,Bb5b6][%mdl 32]} Rb1 49. b5 Re1 50. c4 (50. fxg5+ $142 Ke7 51. g6 Re5 52. Kf4 Rd5 53. b6 Rd7 54. g7 Kf7 55. Be4) 50... Rd1 51. fxg5+ Kxg5 52. Ke4 {White mates.} Re1+ 53. Kd5 Kxg4 54. b6 {Weighted Error Value: White=0.25 (precise) /Black=0.66} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.07"]
[Round "6.7"]
[White "Robson, Ray"]
[Black "Swiercz, Dariusz"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2676"]
[BlackElo "2656"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,99,17,18,14,0,0,0,0,0,4,7,0,8,0,4,0,2,14,34,29,46,51,59,59,59,0,70,59,72,48,56,41,42,33,47,27,29,22,20,16,20,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,13,13,7,10,52,54,56,55,71,53,79,59,59,49,53,6,33,33,33,10,10,0,33,33,33,33,33,33,33,4,4,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+ Nc6 6. e3 O-O 7. Qc2 {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} b6 8. Bd2 Bb7 9. cxd5 exd5 10. a3 Bd6 11. Bd3 a6 {To avoid Nb5} 12. O-O Ne7 13. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Ng6 14. b5 {[#] 14.Rfe1 is setting a new trend.} a5 $146 ({Predecessor:} 14... axb5 15. Nxb5 c5 16. Nxd6 Qxd6 17. Rfb1 Ba6 18. Bf5 Bc8 19. Bxg6 hxg6 {0-1 (33) Babula,V (2559)-Alekseev,E (2617) Tornelo INT 2021}) 15. a4 Re8 16. Bc1 Ne4 17. Ba3 Rc8 18. Rfc1 (18. Qb2 $14) 18... Nh4 ({Black should play} 18... c5 $11 19. bxc6 Rxc6) 19. Nxh4 $1 $14 Qxh4 20. g3 Qg5 21. Nxe4 (21. Qd1 {is more complex.} Qf6 22. Rc2 Bxa3 23. Rxa3 c5 24. bxc6 Rxc6 25. Nxe4 dxe4 26. Rxc6 Bxc6 27. Ba6) 21... dxe4 22. Bf1 Qf5 {Inhibits Bh3.} 23. Qb2 h5 24. Rc3 h4 25. Rac1 g6 26. Qe2 Kg7 27. Qb2 ({Of course not} 27. gxh4 Bxa3 28. Rxa3 Rh8 $17) 27... Bd5 28. Bxd6 cxd6 29. Rxc8 Rxc8 30. Rxc8 Qxc8 31. Qa3 Qc7 32. gxh4 Kf8 33. Be2 Ke7 {[#] Strongly threatening ...Qc2.} 34. Qb2 {To avoid Qc2} Qc8 35. Kg2 Qf5 (35... Be6 $11 {is more appropriate.}) 36. Qc3 Kd8 {To avoid Qc7+} 37. h3 {[#] Bg4 is the strong threat.} Qf6 38. Bg4 {Black must now prevent Qc8+.} Bb7 {Inhibits Qc8+.} 39. Kg3 Qe7 40. Qc4 d5 41. Qc3 (41. Qf1 $14 {feels stronger.}) 41... f5 42. Bd1 Qd6+ $1 43. Kg2 Qe7 44. Kg3 Qd6+ 45. f4 {aiming for Be2.} exf3+ 46. Kxf3 {Hoping for Qe1.} Qh2 47. Qe1 {And now Qg3 would win.} Qxh3+ 48. Ke2 (48. Kf4 $5 {[%cal Re1f2]}) 48... Qg2+ 49. Kd3 Bc8 50. Kc3 {Weighted Error Value: White=0.07 (flawless) /Black=0.07 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.07"]
[Round "6.8"]
[White "Nyzhnyk, Illya"]
[Black "Antipov, Mikhail Al."]
[Result "1/2-1/2"]
[ECO "B41"]
[WhiteElo "2674"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,112,56,54,46,39,54,36,41,34,37,34,40,43,36,27,57,62,55,50,40,30,37,0,0,0,0,6,7,22,29,18,12,9,8,11,97,94,106,14,14,9,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. d4 cxd4 5. Nxd4 a6 6. e4 Qc7 7. a3 b6 8. Be3 Bb7 9. f3 Be7 10. Be2 d6 11. O-O Nbd7 {B41: Sicilian: Kan Variation: 5 c4.} 12. Rc1 O-O 13. Qd2 Rac8 {White is slightly better.} 14. b4 $1 {14.b4 scores better than 14.Rfd1.} Qb8 15. Rfd1 Rfe8 16. Bf1 Bd8 17. Nb3 Bc7 {[%cal Od6d5]} 18. Bf4 {[%cal Rf4d6]} Ne5 $1 19. Bxe5 dxe5 20. Qe3 Red8 {[#]} 21. a4 $146 ({Predecessor:} 21. Na4 Bc6 22. Nb2 Qa8 23. a4 Nd7 24. Kh1 f5 25. exf5 exf5 26. b5 Bb7 27. Qg5 Bxf3 28. gxf3 Qxf3+ {0-1 (48) Chin,A (1937)-Zhu,E (2006) Charlotte 2019}) 21... Bc6 22. Kh1 Be8 23. c5 Rxd1 24. Rxd1 Qa7 25. Qe2 Ra8 26. Ra1 bxc5 27. Nxc5 {Threatens to win with a5.} Bb6 (27... a5 $1 $11 {remains equal.} 28. Nb5 Qb6) 28. Nxa6 $16 {White is more active. Pair of Knights!} Rc8 29. Nc5 ({White should try} 29. Ra3 $16) 29... Bxc5 $11 {The position is equal.} 30. bxc5 Qxc5 31. Nb5 Qb4 32. a5 Rb8 $1 {[%cal Re8b5]} 33. Qe1 $1 Qxe1 (33... Rxb5 34. Bxb5 Qxb5 35. a6 $16) 34. Rxe1 {[%cal Oa5a6]} Bxb5 35. Rb1 Ne8 $1 36. Rxb5 Rxb5 37. Bxb5 {[%mdl 4096] Endgame KB-KN} Nc7 38. Bd3 Kf8 39. f4 exf4 40. e5 Ke7 41. Kg1 h6 42. Kf2 Kd7 43. Kf3 Kc6 44. Kxf4 Kc5 45. Bh7 Nd5+ 46. Kf3 $1 {Hoping for Bg8.} Ne7 {Inhibits Bg8.} ({But not} 46... Kb5 47. Bg8 $14) 47. a6 {[#] aiming for a7.} Kb6 {...g6 is the strong threat.} 48. Bd3 Nc6 49. Kf4 Nb4 {[%csl LRa6,LRd3]} 50. Bh7 Nxa6 51. Bg8 $1 Kc5 ({Don't do} 51... g5+ 52. Kg4 $14) 52. Bxf7 Kd5 53. Kg4 $1 Nc5 54. Kh5 Nd3 {[#] Strongly threatening ...Nf4+.} 55. Bxe6+ $1 Kxe6 56. Kg6 Nf4+ {Weighted Error Value: White=0.06 (flawless) /Black=0.04 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.07"]
[Round "6.9"]
[White "Niemann, Hans Moke"]
[Black "Xiong, Jeffery"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2642"]
[BlackElo "2686"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,89,34,32,35,32,45,33,29,20,18,-10,33,23,27,41,39,29,50,16,77,73,72,52,69,65,77,77,77,77,74,75,67,92,70,63,87,0,0,0,0,0,0,16,45,24,42,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-10,-10,-10,-10,-16,-14,-14,-14,-14,-14,-14,0,0,0,-16]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Re1 Nf6 6. c3 a6 7. Bf1 Bg4 8. d4 Bxf3 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} 9. gxf3 cxd4 10. cxd4 d5 {White is slightly better.} 11. e5 Nh5 12. e6 (12. f4 $5 {[%cal Rd1h5]} g6 13. f5 $11) 12... fxe6 (12... g6 $11) 13. Bh3 $14 (13. Rxe6 g6 14. Nc3 Kf7 $17) 13... g6 $1 {...Bg7 is the strong threat.} 14. Nc3 $1 $36 {[%cal Bb1c3,Bc3a4,Ba4c5][%mdl 2080] White has good play.} (14. Rxe6 Bg7 15. Nc3 O-O $17) (14. Bxe6 Ng7 15. Bh3 Nf5 $15) 14... Ng7 (14... e5 15. dxe5 d4 16. Na4 $16 (16. Ne4 Qd5 $16)) 15. Na4 (15. Bxe6 Nxe6 16. Rxe6 Bg7 $17) 15... e5 16. Nc5 {[#] To avoid e6. Threatens to win with Bg5.} (16. dxe5 e6 17. f4 Rc8 $15) (16. Bg5 $5 {[%cal Ra4c5]}) 16... e6 $146 (16... Kf7 $1 $11) ({Predecessor:} 16... Kf7 17. Bh6 Nf5 18. Bxf8 Rxf8 19. Bxf5 gxf5 20. f4 Rg8+ 21. Kh1 Rg4 22. dxe5 e6 23. Nxb7 {½-½ (30) Yu,Y (2646)-Bu,X (2662) Danzhou 2011}) 17. Nxe6 $16 Nxe6 18. Bxe6 Bb4 $1 19. Rxe5 ({Not} 19. dxe5 $2 Bxe1 20. Qxe1 Nd4 $19) 19... Nxe5 20. dxe5 Qe7 21. Qxd5 {[#] aiming for Qb3.} Rd8 22. Qb3 {Black must now prevent Bh6.} Bd2 {Inhibits Bh6.} 23. Bxd2 Rxd2 24. Rc1 {And now f4 would win. Dancing on a razor blade.} Rd3 {[#] Strongly threatening ...Qg5+.} 25. Qc4 {White is more active.} ({Of course not} 25. Qxd3 $6 Qg5+ 26. Bg4 Qxc1+ 27. Kg2 O-O $11) ({White should try} 25. Rc8+ $16 Rd8 26. Qc4) 25... Rd4 $11 26. Qxd4 {Intending Rc8+ and mate.} Qg5+ 27. Bg4 Qxc1+ {[%mdl 4096] Endgame KQR-KQB} 28. Kg2 Qc7 {Prevents Qd7+.} 29. f4 Rf8 30. h4 (30. Kg3 $14 {might be stronger.}) 30... Qd8 {The position is equal.} 31. Qa4+ b5 32. Qxa6 Rxf4 33. Qxb5+ Kf8 34. Qc5+ Qe7 35. Qxe7+ ({But not} 35. Qc8+ Kg7 36. Qd7 Qxd7 37. Bxd7 Rxh4 $17) 35... Kxe7 {KR-KB} 36. Kg3 Rd4 37. f4 Rd2 38. Bf3 Rxb2 39. Bd5 Rd2 40. Bb3 h5 {[%mdl 1024] Black has compensation.} 41. Bc4 Rc2 42. Bd5 Rc3+ 43. Kg2 Rc2+ 44. Kf3 Rc3+ 45. Ke4 {Weighted Error Value: White=0.08 (flawless) /Black=0.06 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.07"]
[Round "6.10"]
[White "Lenderman, Aleksandr"]
[Black "Dragun, Kamil"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "2600"]
[BlackElo "2590"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,87,6,10,8,3,6,4,5,8,18,14,19,19,0,0,0,13,33,58,35,53,18,13,0,40,39,40,0,0,0,0,0,0,-9,88,97,89,97,97,89,128,90,248,260,237,244,244,253,225,240,255,225,289,281,450,474,467,470,565,540,550,556,562,547,533,536,524,505,459,438]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3 Be7 5. b3 O-O 6. Bb2 b6 7. cxd5 exd5 8. d4 Bb7 9. Bd3 Nbd7 10. O-O a6 {The main line 10...a6 scores better than 10...Re8.} 11. Ne2 {[%cal Bc3e2,Be2g3,Bg3f5][%mdl 32] E14: Queen's Indian: Classical Variation (4 e3).} Re8 12. Ng3 Bd6 {To avoid Ne5} 13. Nf5 {The position is equal.} Bf8 14. Ne5 g6 15. Ng3 {[#]} Ne4 $146 ({Predecessor:} 15... Bg7 16. f4 c5 17. Qf3 Qc7 18. Rac1 Rac8 19. Qe2 a5 20. Bb5 Re7 21. Rfd1 Qd8 {1-0 (53) Keymer,V (2591)-Mendonca,L (2549) chess24.com INT 2021}) 16. Qc2 {[%cal Rg3e4]} Nxg3 17. hxg3 Nxe5 (17... Bd6 {keeps more tension.} 18. Rac1 Qe7 19. Rfe1 Bb4 20. Red1 Bd6) 18. dxe5 Bg7 19. f4 c5 {[%cal Bc7c5,Bc5c4,Bc4c3][%mdl 32]} 20. Qf2 Rc8 21. Rad1 {[%cal Od3e4]} Rc7 (21... Qe7 $5 {[%cal Rc5c4]}) 22. g4 Qe7 23. g5 c4 24. Bc2 c3 25. Bc1 {[%cal Bb2c1,Bc1e3,Be3c5][%mdl 32]} b5 26. Qg3 Bc8 (26... b4 $11 {remains equal.}) 27. Rxd5 $16 b4 28. e4 Rd7 29. Rfd1 Red8 30. Be3 Bb7 $2 {[#] This costs Black the game.} (30... Qe6 $16) 31. Bc5 $1 $18 Rxd5 (31... Qe8 32. Rxd7) 32. Rxd5 (32. Bxe7 $6 Rxd1+ 33. Kh2 Bf8 34. Bxd8 Rxd8) 32... Qc7 33. Rxd8+ ({Not} 33. Bxb4 $2 Bxd5 34. Qxc3 Qxc3 35. Bxc3 Be6 $19) 33... Qxd8 {[#]} 34. Qd3 $1 Qxd3 35. Bxd3 {[%mdl 4096] Endgame KBB-KBB} a5 36. Bb6 h6 $2 (36... Bf8 {keeps fighting.} 37. Kf2 (37. Bxa5 Ba6 $16) 37... Bc8) 37. Bxa5 {White is clearly winning.} Bf8 38. gxh6 Bc5+ 39. Kh2 Kh7 40. Bc7 Ba6 41. Bc2 ({But not} 41. Bxa6 $2 c2 42. Bd6 c1=Q 43. Bxc5 Qxc5 $19) 41... Kxh6 42. Bd6 Be3 43. g3 g5 44. f5 {Weighted Error Value: White=0.04 (flawless) /Black=0.23 (precise)} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.08"]
[Round "7.6"]
[White "Dragun, Kamil"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2590"]
[BlackElo "2684"]
[Annotator "TA"]
[PlyCount "196"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,196,39,40,47,46,51,70,62,70,41,53,62,41,87,64,60,73,159,148,166,116,115,113,190,195,170,137,144,124,154,143,183,177,293,292,296,291,294,85,85,4,5,9,11,6,251,258,237,0,0,0,0,0,0,0,0,0,74,80,81,69,92,83,100,108,109,73,116,106,108,114,114,123,123,113,109,62,84,88,166,173,129,127,193,185,197,195,189,189,189,189,183,168,321,321,321,321,321,321,298,198,198,198,198,198,191,191,172,165,321,321,321,321,321,321,341,300,300,300,394,69,69,69,69,69,65,39,39,39,40,40,40,40,40,40,40,40,40,40,40,40,44,44,44,20,20,20,20,20,20,0,44,0,44,44,44,44,44,44,44,44,44,44,44,36,36,0,44,44,46,46,46,46,46,20,26,28,28,35,28,8,14,-8,8]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 dxc4 5. Bg2 a6 6. O-O Nc6 7. e3 Rb8 8. Nfd2 e5 {E04: Open Catalan: 5 Nf3.} 9. Bxc6+ bxc6 10. dxe5 Ng4 {White is slightly better.} 11. Nxc4 Be6 12. Nbd2 Bb4 13. b3 Bc3 {[#]} (13... h5 $14) 14. Rb1 $146 ({Predecessor:} 14. Ba3 Qg5 15. Nf3 Qh5 16. Nd6+ cxd6 17. Qxd6 Rb7 18. Qxc6+ Rd7 19. Qxc3 Nf6 20. Qc8+ Rd8 21. Qc6+ {1-0 (21) Yuffa,D (2556)-Ioannidis,E (2422) Riga 2021}) 14... Bxd2 15. Nxd2 {[%cal Bc4d2,Bd2f3,Bf3h4][%mdl 32]} h5 (15... Qd3 $142) 16. Nf3 $1 $16 Bd5 17. e6 (17. Rb2 $1 $18) 17... fxe6 18. Qc2 {Inhibits Be4.} O-O (18... Bxf3 $16 {might work better.} 19. Qg6+ Kd7 20. Qf7+ Kc8 21. Qxf3 Ne5) 19. Nh4 $1 $18 c5 20. f3 Ne5 {[%cal Re5f3]} 21. e4 Ba8 22. Qxc5 Rb5 23. Qe3 g5 {[#]} (23... Qd3 {keeps fighting.}) 24. a4 $1 gxh4 25. axb5 Nxf3+ 26. Kh1 $2 (26. Rxf3 Qd1+ 27. Kg2 h3+ 28. Kxh3 Qxf3 29. Qxf3 Rxf3 $18) (26. Kg2 $18 {and White stays clearly on top.} h3+ 27. Kxh3) 26... Rf5 $16 27. Bb2 (27. exf5 Ng5+) ({White should play} 27. Rxf3 $16 Rxf3 28. Qxf3) 27... Ng5 $11 28. Rxf5 (28. Qc3 $2 Bxe4+ 29. Rf3 Bxf3+ $19) 28... Bxe4+ 29. Kg1 $1 Nh3+ {[%mdl 8192]} (29... exf5 $11 30. Rc1 (30. Qc3 Nh3+ 31. Kf1 Qd3+ 32. Qxd3 Bxd3+ 33. Kg2 Bxb1 $11) 30... axb5) 30. Kf1 $18 {[%cal Oe3e4]} Bxf5 31. Ke1 $2 Qd5 $11 32. Rc1 axb5 33. gxh4 $40 {[%mdl 128] White attacks.} Qh1+ 34. Kd2 {Really sharp!} Qxh2+ 35. Kc3 $1 ({Wrong is} 35. Qe2 $2 Qd6+ 36. Ke1 Nf4 $19) 35... Nf4 (35... b4+ $11 {keeps the balance.} 36. Kxb4 Qxb2) 36. Qg1+ $16 Qxg1 37. Rxg1+ {[%mdl 4096] Endgame KRB-KBN} Bg4 38. Kd2 Ng6 39. Rc1 $1 Nxh4 40. Rxc7 Bf3 {Inhibits Rb7.} (40... e5 $142 41. Ke3 Nf3) 41. Rc5 b4 42. Rc4 {[%csl LRb4,LRh4]} Ng6 43. Ke3 Bd5 44. Rxb4 Kf7 45. Rb8 ({Better is} 45. Kf2 $16) 45... h4 $14 46. Kf2 $1 e5 (46... Nf4 $16) 47. b4 $18 {[%cal Bb3b4,Bb4b5,Bb5b6][%mdl 32]} Ke7 (47... Nf4 $18) 48. Bc1 $16 h3 (48... Kd7 $16 49. Be3 Be4) 49. Kg3 $18 Bg2 50. b5 {Strongly threatening b6.} Nf4 51. Ba3+ Kd7 52. Rh8 {Threatens to win with Rh7+.} Be4 {Prevents Rh7+.} 53. Rh6 Bd3 $2 (53... Kc7 {is a better defense.} 54. Bb4 Ne2+ 55. Kxh3 Nd4 56. Bd6+ Kb7 57. Bxe5 Nxb5) 54. b6 $1 {And now b7 would win.} Be4 55. Bd6 Nd3 56. Kxh3 Kc8 57. Kg3 Kb7 58. Bc7 Bc6 59. Rh7 {Bd8+ is the strong threat.} Nc5 60. Bd8+ Nd7 61. Rh2 {Hoping for Ra2.} Kc8 $2 {[#]} (61... Nc5 {was called for.} 62. Rh4 Bb5) 62. Rc2 $1 Kb7 63. Ra2 Kc8 {[#]} 64. Bc7 $1 Bh1 65. Ra1 Be4 66. Kf2 Bc6 67. Ke3 $2 (67. Ra7 $18) 67... Nf6 $1 $14 68. Bxe5 (68. Rc1 {looks sharper.} Nd5+ 69. Ke4 Kb7 70. Bd8 Nxb6+ 71. Kxe5 Bb5 72. Kd6) 68... Nd5+ 69. Kd4 {Intending Kc5 and mate.} Nxb6 70. Kc5 Nd7+ 71. Kxc6 {Ra8+ would kill now.} Nxe5+ {KR-KN} 72. Kd6 Nd7 $1 73. Ra7 Nb8 74. Ra2 Nd7 75. Ra1 Nb8 $1 76. Rh1 Kb7 77. Rb1+ Kc8 78. Rb3 Nd7 79. Rc3+ Kd8 80. Rc1 Nf8 81. Re1 Nd7 82. Ra1 {Threatening mate with Ra8+.} Kc8 83. Rb1 Nb8 $1 84. Rc1+ Kb7 85. Rc2 Na6 86. Rb2+ Kc8 87. Rb5 Nb8 $1 88. Ra5 Kb7 89. Ra2 Na6 90. Rb2+ Kc8 91. Rb3 Nb8 $1 92. Rb6 Nd7 93. Rc6+ Kd8 94. Rc7 (94. Ra6 $5 {[%cal Ra6a8]} Kc8 95. Ra8+ Kb7 96. Ra2 $14 (96. Kxd7 Kxa8 $11)) 94... Nf8 95. Re7 Ng6 96. Rf7 Ke8 97. Rf6 Nf8 $1 98. Rxf8+ Kxf8 {Black escapes into a draw.  Weighted Error Value: White=0.18 (very precise) /Black=0.24 (precise)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.08"]
[Round "7.7"]
[White "Xiong, Jeffery"]
[Black "Lenderman, Aleksandr"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2686"]
[BlackElo "2600"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,27,32,22,25,18,29,35,33,25,38,27,35,39,73,36,48,13,41,31,41,50,51,27,38,32,24,22,33,26,24,33,45,0,0,0,23,24,36,0,0,0,0,0,0,-7,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 d6 5. d3 Be7 6. a4 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} Nf6 (6... h6 {feels hotter.} 7. Nd2 Nf6 8. Nf1 Bg4 9. f3 Be6) 7. Bg5 Nd7 8. Bxe7 {White has an edge.} Qxe7 {[#]} 9. Nd2 $146 {[%cal Bf3d2,Bd2f1,Bf1e3][%mdl 32]} ({Predecessor:} 9. Nd5 Qd8 10. c3 O-O 11. Nd2 Nf6 12. Nxf6+ Qxf6 13. Nf1 Qg5 14. Ne3 Kh8 15. h4 {½-½ (39) Short,N (2690)-Illescas Cordoba,M (2591) Sestao 2010}) 9... O-O 10. Nf1 Qg5 11. Ne3 Nf6 12. Qd2 Nd4 13. Nb5 {Black must now prevent h4.} Rd8 14. c3 Nxb5 15. axb5 Be6 16. f3 Qg6 17. O-O d5 18. exd5 Nxd5 19. Nxd5 Bxd5 20. Qe3 {[%csl LRc5,LRe5]} Qd6 21. f4 (21. Rae1 $14) 21... exf4 $11 22. Qxf4 b6 23. Qxd6 Rxd6 24. Ra6 g6 {The position is equal.} 25. b3 Bxc4 26. dxc4 Rd2 27. Rf2 Rd1+ 28. Rf1 Rd2 29. Rf2 Rd1+ 30. Rf1 Rd2 {Weighted Error Value: White=0.10 (very precise) /Black=0.06 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.08"]
[Round "7.8"]
[White "Antipov, Mikhail Al."]
[Black "Niemann, Hans Moke"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2615"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,88,20,6,7,0,0,13,7,12,21,23,22,15,25,24,16,20,17,10,22,6,15,25,19,10,26,12,6,20,22,23,30,16,23,0,0,-12,-1,-2,0,0,0,-4,0,-8,-8,-12,-8,-6,-11,-68,-60,-57,-57,-125,-143,-244,-243,-219,-124,-133,-134,-118,-63,-74,-83,-268,-261,-245,-212,-611,-604,-560,-526,-861,-847,-1679,-1635]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O O-O 6. Nbd2 d6 7. c3 a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. h3 h6 $1 {8...h6 scores better than 8...Be6.} 9. Re1 Be6 {The position is equal.} 10. Bb5 Nd7 {[#]} 11. Ba4 $146 ({Predecessor:} 11. Nf1 f5 12. exf5 Bxf5 13. Ng3 Bg6 14. d4 exd4 15. cxd4 Bb6 16. a3 Nf6 17. Bc4+ {0-1 (63) Navara,D (2758)-Deac,B (2605) Riga 2021}) 11... Re8 12. Nf1 {White wants to play d4.} d5 13. exd5 Bxd5 14. Ne3 Bxe3 15. Bxe3 f5 16. Bb3 Nf6 17. d4 e4 18. Ne5 Bxb3 19. Qxb3+ Qd5 {[#]} 20. Nd7 $1 {aiming for Nxf6+.} Qxb3 (20... Kf7 21. Nxf6) 21. Nxf6+ Kf7 22. axb3 {[%cal Ba2b3,Bb3b4,Bb4b5][%mdl 32]} Kxf6 23. Bf4 (23. d5 $5 {[%cal Rd5c6]} Ne5 24. Bd4 $11) 23... Re7 24. b4 g5 25. Bd2 Ree8 {Threatening ...axb4.} 26. b5 Ne7 27. c4 b6 28. f3 exf3 29. gxf3 f4 30. d5 Nf5 31. c5 ({Better is} 31. Bc3+ $11 Kf7 32. Kf2) 31... Nd4 32. Rxe8 Rxe8 $15 {[%mdl 4096] Endgame KRB-KRN} 33. Bc3 (33. cxb6 $1 $15 Nxf3+ 34. Kf2 Nxd2 35. bxc7 Ne4+ 36. Kf3 Nd2+ 37. Kf2 Ne4+ 38. Kf3 Nd2+ 39. Kf2) 33... bxc5 $17 34. Rxa5 {[#]} (34. Kf2 $17 {was worth a try.}) 34... Ke5 $1 $19 35. Ra6 h5 (35... Kxd5 $19 {White must now prevent ...h5.} 36. Rxh6 Re3) 36. Rh6 h4 37. Rg6 Kxd5 (37... Kf5 $17 38. Rg7 Nxb5 39. Rf7+ Kg6 40. Rf6+ Kh5) 38. Rxg5+ $15 Kc4 {Black is more active.} 39. Rg4 $2 {[#] This move loses the game for White.} (39. Rh5 $17) 39... Kd3 $1 $19 {Strongly threatening ...Ke3.} (39... Nxf3+ 40. Kf2 Nd4 41. Rxf4 $11) ({Stronger than} 39... Kxb5 40. Kf1 $11) 40. Kf1 Ke3 ({And not} 40... Nxb5 41. Be1 $17) 41. Rg2 $2 (41. Ba5 Kxf3 42. Bxc7 Nxb5 43. Rxf4+ Kg3 44. Rf7+ Kxh3 45. Bb6) 41... Kxf3 {Black is clearly winning.} 42. Rf2+ Kg3 43. Rg2+ Kxh3 44. Rg5 Nf3 {Weighted Error Value: White=0.41/Black=0.07 (flawless)} 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.08"]
[Round "7.9"]
[White "Swiercz, Dariusz"]
[Black "Nyzhnyk, Illya"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "2656"]
[BlackElo "2674"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,74,23,24,42,0,3,0,13,13,0,8,22,22,25,21,20,29,45,0,0,0,0,0,0,0,0,0,15,27,38,38,51,52,50,47,64,63,77,31,33,8,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Bd3 Nbd7 6. O-O Bd6 7. Nc3 dxc4 8. Bxc4 b5 {8...0-0 is vanishing. D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran.} 9. Bd3 {9.Bb3 injects fresh life into this line.} (9. Bb3 $14) 9... Bb7 10. b3 a6 11. a4 O-O 12. Bb2 h6 {[#]} 13. Rc1 $146 ({Predecessor:} 13. Qe2 Re8 14. Rfd1 Qe7 15. Ne4 Nxe4 16. Bxe4 Nf6 17. Bd3 Nd5 18. h3 Red8 19. Rac1 {½-½ (80) Gordievsky,D (2474)-Jakovenko,D (2713) Khanty-Mansiysk 2013}) 13... Re8 14. Ne4 Nxe4 15. Bxe4 Qb6 16. Rc2 (16. Ne5 $14 {might be stronger.} Bxe5 17. dxe5) 16... Bf8 $11 17. Qe2 c5 18. Bxb7 Qxb7 19. Rfc1 Rec8 20. Ba3 {[%cal Ra3c5]} b4 21. Bb2 cxd4 22. Bxd4 f6 23. e4 e5 24. Be3 $1 Rxc2 25. Qxc2 Bc5 $1 {[%cal Og8h7]} 26. Bxc5 (26. Qc4+ $16 Kh7 27. Qd5 (27. Bxc5 Rc8 $11) 27... Qxd5 28. exd5 Bxe3 29. fxe3) 26... Rc8 $1 $14 {[#]} 27. Qd3 $1 {Black must now prevent Be3.} Nxc5 {[%cal Bd7c5,Bc5b3,Bb3c1][%mdl 32] The position is equal.} 28. Qc4+ Kh7 $1 {...Rc7 is the strong threat.} 29. Ne1 Qb6 {[%cal Oc5d3] Strongly threatening ...Nd3!} 30. Nc2 Nxb3 31. Qxc8 ({Don't go for} 31. Qxb3 $2 Rc3 32. Qb2 Qc5 $19) 31... Nxc1 32. Qf5+ Kg8 33. Qc8+ Kh7 {[#] aiming for ...Qd6.} 34. Qf5+ Kg8 35. Qc8+ Kh7 {And now ...Qd6 would win.} 36. Qf5+ Kg8 37. Qc8+ Kh7 {Weighted Error Value: White=0.06 (flawless) /Black=0.04 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.08"]
[Round "7.10"]
[White "Hakobyan, Aram"]
[Black "Robson, Ray"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2601"]
[BlackElo "2676"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,115,13,18,11,9,0,14,0,22,0,0,-2,0,0,13,10,14,6,10,0,20,20,15,15,18,10,14,12,16,18,22,-16,0,0,-9,-33,-10,-15,-18,-19,-25,-30,-28,-18,-29,-19,0,-29,-24,-18,0,0,16,9,19,17,20,20,20,22,19,0,0,0,10,0,15,4,16,0,12,16,15,11,12,7,12,0,35,48,97,101,102,83,42,42,58,70,239,212,158,189,359,321,766,744,882,885,926,844,910,635,882,701,737,208,6183,5353]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 d5 6. Nbd2 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5.} dxe4 7. dxe4 O-O 8. O-O {The position is equal.} a5 9. Qc2 {Recently 9.a3 got a lot of attention.} (9. Bxc6 {is more complex.} bxc6 10. Nxe5 Re8 11. Nb3 Qxd1 12. Rxd1 Bb6 13. Nc4) 9... Qe7 10. h3 Rd8 11. a4 Na7 12. Bc4 h6 13. Re1 Nc6 14. Bb5 {[#]} Na7 $146 ({Predecessor:} 14... Be6 15. Nb3 Bd6 16. Be3 Nb8 17. Rad1 Nbd7 18. Nfd2 Nc5 19. Nc1 Rab8 20. Bc4 Bd7 21. b3 b6 22. Ne2 Qe8 {½-½ (38) Kukk,R (2584)-Szczepanski,Z (2541) ICCF email 2014}) 15. Bf1 Nc6 16. Nc4 {[%cal Bd2c4,Bc4e3,Be3f5][%mdl 32]} Nh5 17. Ne3 Nf4 {Prevents Nd5.} 18. Nf5 Qf6 19. g3 Ng6 20. Nd2 (20. Nh2 $5 {[%cal Rh2g4]}) 20... Nge7 {[%cal Re7f5]} 21. Ne3 Be6 22. Bg2 Qg6 23. Ndf1 Rd7 24. b3 f6 25. Ba3 Bxa3 26. Rxa3 Rad8 27. Nc4 Qh5 28. Kh2 Kh8 29. Nfe3 Qf7 30. Raa1 Qh5 31. Bf1 Qf7 32. Rad1 Qh5 33. Rxd7 Rxd7 34. h4 Qe8 (34... b6 {feels hotter.} 35. Nd2 Kg8 36. Be2 Qf7 37. Bb5 Kf8) 35. Bh3 Bxh3 36. Kxh3 b6 37. Qe2 Kg8 38. Kg2 Kf8 39. h5 Qa8 40. Rd1 Qd8 41. Rxd7 Qxd7 42. Qf3 Ke8 43. Nd5 Kd8 44. Nce3 Kc8 (44... Ke8 $14 {might be stronger.}) 45. Qe2 $16 {White is more active.} Nxd5 46. Qa6+ ({Don't play} 46. Nxd5 $6 Kb7 $11) 46... Kb8 47. exd5 Ne7 48. Qb5 Qxb5 {This move loses the game for Black.} ({Black should try} 48... Qd6 $14) 49. axb5 $14 {[%mdl 4096] Endgame KN-KN} Kc8 50. Kf3 $1 Kd7 $2 {[#]} (50... f5 {was worth a try.}) 51. Ke4 $1 $18 Nc8 $2 {[#]} (51... Kd6 52. Nf5+ Nxf5 53. Kxf5 Kxd5) 52. Nf5 $1 Nd6+ 53. Nxd6 cxd6 54. Kf5 {Kg6 would kill now.} Ke7 55. Kg6 Kf8 56. c4 Kg8 57. Kf5 $2 (57. f3 Kf8 58. c5 dxc5 59. d6) 57... e4 $2 (57... Kf7 58. f3 Ke7) 58. Kxe4 {[%mdl 32768] Weighted Error Value: White=0.20 (precise) /Black=0.19 (very precise) . An unexpected result.} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.09"]
[Round "8.6"]
[White "Sevian, Samuel"]
[Black "Robson, Ray"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2684"]
[BlackElo "2676"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,66,0,17,20,19,5,7,19,22,24,18,12,25,0,0,-15,0,0,0,0,0,-16,134,147,250,236,234,240,239,258,254,253,255,252,250,221,296,258,286,286,270,265,265,257,306,280,352,327,29985,29986,29998,29999,29999]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Bc5 7. O-O O-O 8. d3 h6 9. Nxd5 {A29: English Opening: Four Knights Variation with 4 g3.} Qxd5 10. Bd2 a5 11. Bc3 {[%cal Of3e5] Hoping for Nxe5! The position is equal.} Qe6 {[#]} 12. Nd2 $5 $146 {[%cal Bf3d2,Bd2c4,Bc4a5,Ba5c6][%mdl 8] New and interesting.} ({Predecessor:} 12. Qb3 Qe7 13. e3 a4 14. Qc4 Be6 15. Qe4 f5 16. Qh4 Qxh4 17. Nxh4 Rfd8 18. Rfd1 {½-½ (30) Artemiev,V (2699)-Vachier Lagrave,M (2763) chess24.com INT 2021}) 12... a4 13. Nc4 f6 14. Rc1 Rd8 15. Qd2 Qe7 16. Qc2 Ra6 17. Bxc6 bxc6 18. Na5 {[#] Threatens to win with Be1.} Bh3 (18... Qf7 $11) 19. Be1 $16 {White now steadily converts the win.} Rb6 (19... e4 $16 {was necessary.}) 20. Qxc5 $18 Qxc5 21. Rxc5 Rxb2 22. Nxc6 Rd7 23. Bc3 Rxe2 24. Nb4 e4 (24... Bxf1 $2 25. Kxf1 Rxa2 26. Nxa2 $18) 25. Re1 exd3 {[#] Strongly threatening ...d2.} 26. Rxe2 dxe2 27. f3 Rd1+ 28. Kf2 Rh1 29. Be1 g5 30. g4 h5 31. Nd5 ({Not} 31. Kxe2 Rxh2+ 32. Ke3 hxg4 $18) ({Less strong is} 31. Rxc7 hxg4 32. fxg4 (32. Kxe2 gxf3+ 33. Kxf3 Rxe1 $17) 32... Bxg4 $16) ({Don't play} 31. gxh5 g4 32. Nd3 (32. Kxe2 gxf3+ 33. Kxf3 Rxe1 $11) (32. Rxc7 Rf1+ 33. Kxe2 gxf3+ 34. Kd2 f2 $11) 32... Rxh2+ 33. Ke3 Rh1 $18) 31... h4 $2 (31... Kf7 $18 32. gxh5 Bd7 33. Rxc7 Ke6) 32. Rxc7 {White mates.} Bf1 33. Nxf6+ Kf8 34. Bb4# {Weighted Error Value: White=0.04 (flawless) /Black=0.54} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.09"]
[Round "8.7"]
[White "Nyzhnyk, Illya"]
[Black "Hakobyan, Aram"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2674"]
[BlackElo "2601"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,66,0,0,0,-10,0,0,0,0,0,0,-27,-15,-10,-19,-23,0,0,0,0,0,6,6,7,8,8,25,11,18,7,99,104,245,242,323,323,323,323,367,368,362,370,366,365,370,358,365,333,385,374,513,491,578,567,547]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Qc2 Be7 5. g3 O-O 6. Bg2 c5 7. dxc5 $1 {[%mdl 4] is recently more successful than 7.0-0.} Qa5+ 8. Bd2 {E06: Closed Catalan: Early deviations.} Qxc5 9. Na3 {To avoid b5} Nc6 10. cxd5 {The position is equal.} Qxc2 11. Nxc2 Nxd5 {[#]} 12. O-O-O $146 ({Predecessor:} 12. O-O Rd8 13. Rfd1 Bd7 14. Nfe1 Be8 15. Nd3 Rac8 16. Rac1 b6 17. Kf1 Kf8 18. f4 {1-0 (61) Artemiev,V (2682)-Michalik,P (2558) Minsk 2017}) 12... Bd7 13. Kb1 Rfd8 14. Bg5 Kf8 (14... f6 $5 {[%cal Rf6g5]} 15. Bc1 Nb6 $11) 15. Bxe7+ Kxe7 16. Nfd4 Nxd4 17. Nxd4 {[%cal Bc2d4,Bd4e2,Be2c3][%mdl 32]} Ba4 18. Rc1 Kf6 19. Rc5 Nb6 20. e3 e5 21. Ne2 Rd2 (21... Rac8 $1 $11 22. Rxc8 Rxc8) 22. Nc3 $36 {[%mdl 2048] Black must now prevent Ne4+. Keeping Black busy.} Bc2+ {[#] This costs Black the game.} (22... Kg6 $16) 23. Kc1 $1 $18 Rxf2 24. Be4 Ba4 25. Bxb7 Rc2+ 26. Kb1 Rxc3 27. Rxc3 ({Stronger than} 27. bxc3 Rb8 28. Rc7 (28. Rf1+ Ke6 $15) 28... Nd5 29. Rf1+ Ke6 30. Rcxf7 Bc6 31. Rxg7 Rxb7+ 32. Rxb7 Bxb7 $15) 27... Rd8 28. b3 Bb5 {Inhibits Rf1+.} 29. Kc2 Be2 30. e4 Rd4 31. a4 Rb4 32. Re1 Bg4 33. Rf1+ Ke7 {Weighted Error Value: White=0.03 (flawless) /Black=0.27 (precise)} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.09"]
[Round "8.8"]
[White "Niemann, Hans Moke"]
[Black "Swiercz, Dariusz"]
[Result "0-1"]
[ECO "C88"]
[WhiteElo "2642"]
[BlackElo "2656"]
[Annotator "TA"]
[PlyCount "150"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,150,10,25,8,18,34,6,13,2,9,2,17,0,0,2,0,-73,-81,-104,-74,-73,-64,-102,-99,-103,-104,-106,-104,-144,-140,-154,-66,-150,-154,-150,-162,-166,-166,-187,-100,-103,-97,-98,-79,-162,-155,-131,-147,-139,-141,-206,-213,-223,-203,-224,-220,-199,-227,-243,-238,-232,-169,-178,-180,-204,-185,-216,-205,-186,-120,-131,-114,-126,-68,-105,-103,-100,-79,-125,-122,-114,-136,-275,-257,-279,-265,-352,-212,-182,0,-354,-300,-267,-251,-255,-264,-248,-247,-483,-478,-560,-615,-615,-545,-579,-551,-537,-540,-616,-604,-583,-336,-320,0,-589,-590,-681,-684,-761,-741,-662,-506,-764,-472,-908,-905,-825,-796,-773,-662,-1606,-1555,-1796,-1615,-1383,-1343]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. h3 Bb7 9. d3 d5 $1 {[%mdl 4] outshines the older 9...d6. C88: Closed Ruy Lopez: Anti-Marshall Systems.} 10. exd5 Nxd5 11. Nbd2 f6 {The position is equal. has lost popularity (11...Qd7).} 12. c3 Kh8 13. Ne4 Qd7 {[#]} 14. Nh4 $146 {Black should prevent Qh5.} ({Predecessor:} 14. Ng3 Rad8 15. Bc2 f5 16. a3 Bd6 17. Bb3 Nf6 18. a4 b4 19. a5 e4 20. Ng5 {0-1 (57) Lanka,Z (2377)-Buckels,V (2459) Schwaebisch Gmuend 2020}) 14... Rad8 15. Qh5 {Ng6+ is the strong threat.} Qe8 {Inhibits Ng6+.} 16. Qg4 (16. Qf3 $11) 16... Bc8 $1 $17 17. Qf3 Nf4 18. Bxf4 exf4 19. Qxf4 g5 20. Qxc7 gxh4 21. d4 Qd7 22. Qf4 Na5 $1 {[%cal Bc6a5,Ba5c4,Bc4d2][%mdl 32]} ({Worse is} 22... f5 23. Ng5 $11) 23. Bd1 Rg8 (23... Nc4 $17 24. b3 Nb6) 24. Bf3 (24. Nxf6 $15 Bxf6 25. Qxf6+ Qg7 26. Qxg7+ Rxg7 27. Kh1) 24... Qf5 25. Qxf5 Bxf5 26. Kh1 Nc4 27. b4 Bxe4 (27... Bd6 $19 28. Nxd6 Nxd6) 28. Rxe4 Bd6 29. Rxh4 Nd2 30. Bc6 (30. Be2 $17 {was necessary.}) 30... Rc8 $1 $19 31. d5 f5 {Black is more active.} 32. Bd7 Rcf8 33. Be6 (33. Rh5 $17 {keeps fighting.}) 33... Rg7 34. f3 Nc4 35. Rd4 Be5 36. Rd3 Rc7 37. Re1 Bg3 38. Rf1 Bd6 {And now ...Ne5 would win.} 39. f4 h5 40. h4 Kh7 41. Kh2 Nb2 42. Rg3 Rg7 (42... Kh6 $19 43. Rg5 Nc4) 43. Rg5 $17 Rxg5 44. hxg5 Na4 (44... Kg6 $1 $17 {Strongly threatening ...Nd3.} 45. g3 Re8) 45. Rf3 Kg6 46. g3 Re8 47. Re3 (47. Kh3 $142) 47... Re7 {[%cal Oh5h4] Threatens to win with ...h4!} 48. Kh3 Nb6 $1 {[%cal Ob6d5]} ({Reject} 48... Rc7 $6 49. Bc8 Re7 50. Rd3 $11) 49. Rd3 (49. Rf3 $17) 49... Nc4 $19 50. Rd1 Rc7 $1 51. Bg8 Kg7 52. Be6 Kg6 $2 (52... h4 $1 53. gxh4 Nb2) 53. Bg8 $1 Ne3 54. Rd3 Ng4 55. Kg2 {[#] Inhibits Nf2.} Rc4 $1 56. Be6 {[#]} Re4 $1 57. Rd2 $2 (57. Bd7) 57... Re3 58. Bc8 h4 59. gxh4 Bxf4 60. Rd4 Be5 61. Rd2 Rxc3 62. Bd7 Rg3+ 63. Kf1 Rf3+ 64. Kg2 Rg3+ $2 (64... Rf4 {( -> ...Ne3+)} 65. Be8+ Kg7) 65. Kf1 Bd6 {Black is clearly winning.} 66. Be8+ Kg7 67. h5 f4 {White must now prevent ...Rf3+.} 68. h6+ Kf8 69. Bg6 (69. Bh5 $142 Ne3+ 70. Ke2) 69... Nxh6 {aiming for ...Ng4.} 70. gxh6 (70. Rg2 $142 Rf3+ 71. Rf2 Rxf2+ 72. Kxf2 Ng4+ 73. Kg1) 70... Rxg6 {KRB-KR} 71. Rh2 Kg8 72. h7+ Kh8 73. a3 Rg5 74. Rh6 Rxd5 {Hoping for ...f3.} 75. Ke2 Rd4 {Weighted Error Value: White=0.28 (precise) /Black=0.15 (very precise)} 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.09"]
[Round "8.9"]
[White "Lenderman, Aleksandr"]
[Black "Antipov, Mikhail Al."]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2600"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,117,0,0,0,0,0,0,0,0,0,-2,20,21,26,26,26,28,70,67,55,39,108,112,106,102,119,83,84,69,75,68,72,75,81,47,66,40,54,40,44,44,45,45,54,46,54,54,54,54,54,54,54,28,28,24,25,15,15,15,27,15,15,9,41,41,41,41,41,41,41,0,41,41,41,0,41,41,41,41,41,41,41,41,41,41,41,41,41,41,41,0,0,0,41,0,9,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 d5 5. h3 O-O 6. cxd5 Nxd5 7. e4 Nxc3 8. bxc3 c5 9. Be2 Nc6 10. Be3 cxd4 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} 11. cxd4 Qa5+ 12. Bd2 Qa3 13. d5 Ne5 {Black wants to play ...Nd3+.} 14. Rb1 Bd7 {[#] Threatens to win with ...Ba4.} 15. Nxe5 Bxe5 16. Rxb7 Ba4 17. Qc1 $36 {[%mdl 2048] [#] Black is under pressure.} Qxc1+ $146 (17... Qxa2 $11 18. Bc4 (18. Rxe7 $2 Rac8 $19) 18... Qc2 19. Qxc2 (19. Rxe7 $2 Qxe4+ 20. Be3 Qxg2 $19) 19... Bxc2) ({Predecessor:} 17... Qxa2 18. Bc4 Qc2 19. Qxc2 Bxc2 20. O-O Bd6 21. Re1 Rfb8 22. Rxb8+ Rxb8 23. e5 Bb4 24. Bxb4 Rxb4 {½-½ (41) Zimmerman,Y (2386)-Gara,T (2322) Budapest 2001}) 18. Bxc1 $14 Rab8 19. Rxb8 $1 (19. Rxe7 $2 Bc3+ 20. Kf1 Rb1 $19) 19... Bc3+ {[#]} (19... Rxb8 $14 20. O-O Bc2) 20. Kf1 $1 $16 {[%cal Be1f1,Bf1g1,Bg1h2][%mdl 32]} ({Don't do} 20. Bd2 Rxb8 21. Bd3 (21. Bxc3 Rb1+ 22. Kd2 Rxh1 $11) 21... Bb5 $14) 20... Rxb8 21. Bd3 {Prevents Rb1.} Bd1 22. Kg1 Bb2 23. Be3 Rc8 $1 24. Kh2 Bc2 25. Bxc2 Rxc2 {[%mdl 4096] Endgame KRB-KRB} 26. Rd1 Rc4 27. f3 Ra4 28. Bc5 Be5+ 29. Kg1 Kf8 30. Rd2 h5 31. Kf2 h4 32. Ke3 g5 {Hoping for ...Bf4+.} 33. Kd3 Ke8 34. Rc2 Kd7 35. a3 Bd6 $1 36. Rc4 Ra6 37. Bb4 Bxb4 38. axb4 $11 {KR-KR} Ra3+ 39. Rc3 Ra4 ({Don't take} 39... Ra2 40. Rc2 Ra4 41. b5 $16) 40. e5 Rxb4 41. Ra3 Rb2 42. Rxa7+ Ke8 43. Ra8+ $1 Kd7 44. Ra7+ (44. Ke4 $5 {[%cal Ra8f8]} Re2+ 45. Kf5 Rxg2 46. Rf8 $16) 44... Ke8 45. Ke4 {Ra8+ is the strong threat.} Rxg2 46. Ra8+ $1 Kd7 47. Rf8 $1 Re2+ $1 48. Kf5 Re3 49. e6+ $1 fxe6+ 50. dxe6+ Kd6 51. Kxg5 Kxe6 52. Kxh4 Re1 53. Kh5 Rg1 54. h4 (54. Rf4 $1 $14 {deserves consideration.}) 54... Kd7 55. Rf5 Ke8 (55... Rg3 $11) 56. Kh6 (56. Rg5 $1 $14 Rh1 57. Rf5) 56... e6 {The position is equal.} 57. Rf4 Rg3 58. h5 Ke7 59. Kh7 {Weighted Error Value: White=0.06 (flawless) /Black=0.06 (flawless)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.09"]
[Round "8.10"]
[White "Dragun, Kamil"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2590"]
[BlackElo "2686"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,52,18,18,14,15,17,21,22,25,19,33,14,28,-20,-14,-51,-29,-61,-50,-133,-104,-188,-167,-136,-152,-215,-216,-218,-175,-185,-199,-300,-150,-476,-465,-469,-472,-530,-537,-862,-818]} 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Bd6 7. Bd3 O-O 8. Nge2 {D35: Queen's Gambit Declined: Exchange Variation.} Re8 9. Qc2 {[%cal Od3h7] Black should prevent Bxh7+!} h6 10. Bh4 {The position is equal.} a5 11. h3 Na6 {[%cal Bb8a6,Ba6c7,Bc7e6][%mdl 32]} 12. a3 {To avoid Nb4} Nc7 13. g4 (13. O-O {is more appropriate.}) 13... Ne6 $11 {[#]} 14. f3 $146 ({Predecessor:} 14. Kf1 Be7 15. Kg2 c5 16. dxc5 Nxc5 17. Bb5 Rf8 18. Rad1 Qb6 19. Nd4 Rd8 20. f3 {1-0 (60) Sorokin,A (2537)-Javakhadze,Z (2441) Irving 2019}) 14... b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 15. e4 dxe4 16. fxe4 (16. Nxe4 $15 Nf4 17. O-O) 16... Be7 17. Bf2 (17. e5 $17) 17... Bb7 $1 $19 18. e5 Nd7 ({But not} 18... Nd5 $6 19. Nxd5 Qxd5 20. Bh7+ Kh8 21. Be4 $11) 19. Be4 (19. Rd1 $17) 19... b4 20. Na4 Qc7 {...c5 is the strong threat.} 21. h4 {[#]} c5 $1 {[%cal Ob4b3,Bc6c5,Bc5d4][%mdl 32] And now ...b3! would win.} 22. Rc1 (22. d5 $142 Nef8 23. g5) 22... Bc6 (22... Qb8 $19 23. d5 Nd4 24. Nxd4 (24. Bxd4 $2 cxd4 25. e6 fxe6 $19) 24... cxd4 25. Bxd4 {[#]} Bf6 $1 {[%mdl 512]}) 23. b3 $2 {This move loses the game for White.} (23. O-O $17 {is a better chance.} Qb7 24. Bxc6 Qxc6 25. Bg3) 23... Qb7 {Black is clearly winning.} 24. Bxc6 Qxc6 25. Rf1 Qd5 {[%cal Rc5d4]} 26. axb4 cxd4 {Weighted Error Value: White=0.59/Black=0.11 (very precise)} 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.10"]
[Round "9.6"]
[White "Xiong, Jeffery"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "A20"]
[WhiteElo "2686"]
[BlackElo "2684"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,125,-4,-3,0,7,0,0,0,0,0,0,14,16,16,12,14,0,0,35,10,12,9,16,8,89,98,80,86,78,66,68,64,74,0,41,0,88,98,90,93,91,92,93,96,110,100,103,101,104,101,93,93,107,97,108,99,109,90,85,43,43,43,43,43,49,54,58,22,44,51,98,0,8,12,15,0,13,0,0,0,0,0,0,0,7,0,0,0,72,10,72,0,72,0,72,72,72,0,72,0,72,10,71,71,167,71,71,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 e5 2. d3 Nf6 3. Nf3 Nc6 4. a3 d5 5. cxd5 Nxd5 6. e4 {A20: English Opening: 1...e5.} Nf6 7. Qc2 Bg4 8. Nbd2 a5 {[#]} 9. h3 $146 ({Predecessor:} 9. b3 Nd7 10. Bb2 Qf6 11. Be2 Bc5 12. O-O O-O 13. h3 Bxf3 14. Nxf3 Qd6 15. Rfd1 {0-1 (34) Zhou,J (2597)-Panchanathan,M (2541) Arlington 2015}) 9... Be6 10. Nc4 Nd7 11. Be3 {Inhibits Nd4.} Be7 12. Be2 O-O 13. O-O a4 14. d4 exd4 15. Bxd4 Bf6 16. Be3 Bxc4 (16... Qe7 $11) 17. Bxc4 $16 Nde5 18. Nxe5 Bxe5 19. Rae1 Nd4 20. Qc1 Nb3 21. Qc2 (21. Bxb3 $5 axb3 22. f4 $14) 21... Nd4 22. Qc1 (22. Qd3 $14 {should be considered.} Ne6 23. Qc2) 22... Nb3 23. Bxb3 axb3 24. f4 Bd4 25. Rd1 {[%cal Be1d1,Bd1d3,Bd3b3,Bb3b6][%mdl 32]} Ra4 26. Rd3 Qf6 27. Bxd4 ({Resist} 27. Rxb3 Qe6 28. Qc2 Rc4 $14) 27... Rxd4 28. Rxb3 Rxe4 29. Qxc7 Re7 30. Qb6 {White is more active.} Qxb6+ 31. Rxb6 {[%mdl 4096] Endgame KRR-KRR} Rd8 32. Rf2 {To avoid Rd2} Rd4 33. b3 h5 34. h4 ({White should try} 34. a4 $16) 34... Kh7 $14 35. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} f6 36. Rb5 Kh6 37. a5 Rc7 38. b4 Re7 39. Kh2 Rc4 (39... Rdd7 $14) 40. g3 (40. Kg3 $16) 40... Rd4 41. Rb2 Rd3 42. Rc5 Ra3 43. f5 Ree3 44. Rg2 Re7 {Inhibits Rc7.} 45. Rgc2 Ree3 46. Rg2 Re7 {To avoid Rc7} 47. Rd2 Kh7 48. Rb5 Rb3 (48... Ree3 $11) 49. Rb6 (49. Kh3 $16) 49... Rc7 (49... Rf3 $1 $11) 50. Kg2 (50. Ra2 $16) 50... Re7 {[#]} (50... Rcc3 $11 {remains equal.}) 51. Rb5 (51. Kh3 $1 $16) 51... Rb1 (51... Ree3 $11 {keeps the balance.}) 52. Kf2 $16 Rh1 {White must now prevent ...Rh2+.} 53. Kg2 {Inhibits Rh2+.} Rb1 54. Kf2 Rh1 $1 {Strongly threatening ...Rh2+.} 55. Rbd5 (55. Rd3 $16) 55... Rb1 (55... Re4 $1 $11) 56. b5 Re4 {[#]} (56... Ra1 $16) 57. b6 ({Not} 57. a6 bxa6 58. Kf3 (58. bxa6 Ra4 $11) 58... Ra4 $11) (57. Ra2 $1 $18 {is more deadly.}) 57... Ra4 58. Kg2 (58. R2d3 $16) 58... Rb3 $11 {The position is equal.} 59. Kh2 Raa3 60. Rg2 Kh6 61. Rd8 {[%cal Rd8h8]} Kh7 {Prevents Rh8+.} 62. Rd5 Kh6 63. Rd8 {Weighted Error Value: White=0.20 (precise) /Black=0.16 (very precise)} 1/2-1/2

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.10"]
[Round "9.7"]
[White "Antipov, Mikhail Al."]
[Black "Dragun, Kamil"]
[Result "0-1"]
[ECO "E09"]
[WhiteElo "2615"]
[BlackElo "2590"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,132,37,35,26,52,48,72,68,86,47,47,53,45,30,36,32,36,16,24,0,24,26,41,50,40,45,47,44,60,62,89,97,89,86,112,57,57,44,44,36,44,36,47,58,60,55,44,60,87,100,110,110,97,0,70,64,58,46,70,0,0,0,25,9,18,0,0,-18,-10,-14,-25,-93,-84,-141,-99,-386,-390,-362,-236,-254,-247,-248,-123,-123,-126,-169,-169,-430,-401,-1085,-773,-750,-776,-746,-740,-734,-711,-3050,0,-486,0,-1922,-1525,-1483,-1511,-1187,-1069,-742,-704,-628,-606]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. d4 O-O 6. c4 c6 7. Nbd2 b6 8. Qc2 Bb7 9. e4 Nbd7 10. e5 Ne8 11. cxd5 cxd5 12. Re1 Rc8 13. Qa4 {E09: Closed Catalan: Main Line: 7 Qc2 c6 8 Nbd2.} Qc7 14. Bf1 (14. Qxa7 $2 Ra8 15. Qxa8 Bxa8 $19) 14... a5 {[#]} 15. Nb1 $146 {White is better.} ({Predecessor:} 15. Bd3 Nb8 16. a3 Qc6 17. Qd1 Ba6 18. Bb1 Nd7 19. Nf1 f6 20. exf6 Bxf6 21. h4 g6 22. g4 Bg7 23. N1h2 Nef6 {½-½ (23) Berczes,D (2555)-Saric,A (2497) Zadar 2011}) 15... Nb8 {[%cal Bd7b8,Bb8a6,Ba6b4,Bb4c6][%mdl 32]} 16. Nc3 Ba6 17. Bxa6 Nxa6 18. Bg5 (18. h4 {with more complications.} Qb7 19. Bg5 Bb4 20. Qc2 Rc4 21. a3) 18... Bxg5 19. Nxg5 h6 20. Nh3 Qc4 21. Qd1 Nb4 22. Re3 Nc6 23. Ne2 Ne7 24. Rc3 Qa6 25. Rac1 Rxc3 26. Rxc3 g6 27. g4 b5 28. Nhf4 Ng7 {[#]} 29. Rc7 (29. Rh3 $1 $16 {[%cal Rh3h6]}) 29... Nc6 $14 {Strongly threatening ...Ne8.} 30. Qc2 Rc8 31. Rxc8+ Qxc8 32. Qc5 b4 33. Qb6 Ne8 34. Nd3 Qc7 35. Qb5 Ng7 36. Nc5 Na7 37. Qa6 Nc6 {[%cal Oc6e5]} 38. Qb5 (38. Qa8+ {feels hotter.} Kh7 39. Qf8 Nd8 40. h3 Nc6 41. Kf1) 38... Na7 $1 39. Qd3 Qc6 40. Qe3 Qb5 41. a4 (41. Kf1 $14) 41... bxa3 $1 $11 42. bxa3 Ne8 (42... Nc6 {seems wilder.} 43. Nd7 Ne8 44. Qxh6 Qxe2 45. Qf8+ Kh7) 43. a4 Qc4 44. Kg2 Nc6 {[%cal Oc6d4]} 45. Kg3 {[#]} Nxd4 $1 46. Qxd4 Qxe2 47. Nb7 (47. Nd7 $11 Qc2 48. Qc5 Qxc5 49. Nxc5) 47... Qa6 (47... Qe1 {keeps more tension.} 48. Kf3 Qh1+ 49. Ke2 Qb1 50. Nxa5 Ng7) 48. Qb2 (48. Nc5 $142 Qb6 49. Qc3) 48... Qc6 (48... Qd3+ $142 49. f3 Qd1) 49. f3 $2 {[%mdl 8192]} (49. Qb5 $17 {is the only way for White.} Qxb5 50. axb5) 49... Qxa4 $19 50. Qc3 Qd7 {To avoid Qc8} 51. Nxa5 Qa7 {White must now prevent ...Qg1+.} 52. Kg2 Nc7 (52... d4 $19 {has better winning chances.} 53. Qb4 Kg7) 53. Nc6 $17 Qb6 54. Ne7+ (54. Nd8 $17) 54... Kg7 $19 55. Nc8 $2 {[#]} (55. Qa3 {was the only defense.}) 55... d4 $1 {[%cal Bd5d4,Bd4d3][%mdl 32]} 56. Qa3 (56. Qd2 $142 Qc5 57. Nd6) 56... Qc6 57. Nd6 Qc2+ 58. Kg3 d3 59. Qb4 Qc1 {Threatens to win with ...g5.} (59... d2 60. Qf4 d1=Q 61. Qxf7+ Kh8 62. Qf6+ Kh7 63. Qf7+ Kh8 64. Qf6+ Kh7 65. Qf7+ Kh8 $11) 60. Kg2 Qc2+ ({Weaker is} 60... d2 61. Qf4 $11) (60... Qe3 $142 61. Nc4 Qd4) 61. Kg3 $1 Qc1 ({Worse is} 61... d2 62. Qf4 d1=Q 63. Qxf7+ Kh8 64. Qf6+ Kh7 65. Qf7+ Kh8 66. Qf6+ Kh7 67. Qf7+ Kh8 $11) (61... g5 $142 62. Ne4 Nd5) 62. Kg2 $1 g5 {( -> ...d2). Black is clearly winning.} ({Not} 62... d2 63. Qf4 $11) 63. Ne4 {Prevents d2.} Nd5 64. Qd2 Nf4+ 65. Kf2 Qh1 66. Ke3 Qa1 {Weighted Error Value: White=0.46/Black=0.26 (precise)} 0-1

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.10"]
[Round "9.8"]
[White "Swiercz, Dariusz"]
[Black "Lenderman, Aleksandr"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2656"]
[BlackElo "2600"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,98,11,12,10,16,15,13,8,12,-6,16,12,33,12,16,1,10,0,0,0,0,0,0,0,0,0,9,8,14,10,37,0,0,0,0,0,0,0,-5,-27,9,0,0,0,20,0,0,0,0,-28,-17,-18,-25,-22,-19,-28,0,0,0,-29,100,103,118,119,99,45,46,6,161,142,158,148,480,471,620,602,540,355,360,341,502,515,797,510,647,507,29996,29997,29997,29998,29999]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. Bb5 Bg7 5. O-O e5 6. a3 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} Nge7 7. Bc4 O-O 8. d3 {The position is equal.} d6 9. Rb1 $5 {[%mdl 4] Exploring less charted territory.} h6 10. b4 Kh7 11. bxc5 dxc5 12. Nd5 b6 {[#]} 13. Nxe7 $1 $146 {[%mdl 8] An important novelty.} ({Predecessor:} 13. Re1 Be6 14. Nxe7 Qxe7 15. Bd5 Rac8 16. c4 Qd6 17. Bb2 Ne7 18. Bc3 Bd7 19. a4 {½-½ (39) Ni,H (2671)-Mamedov,R (2709) Riadh 2017}) 13... Qxe7 14. Bd5 Bd7 15. Re1 Rac8 16. Bd2 Qd6 17. c4 Ne7 18. Bc3 g5 19. Qc2 Ng6 20. g3 Ne7 21. Qb2 {[%cal Rf3e5]} f6 22. Nd2 Rce8 23. Re2 Rb8 24. Qc2 {[%cal Od3d4]} a6 {[%cal Ba7a6,Ba6a5,Ba5b4][%mdl 32]} (24... Bh3 {keeps more tension.} 25. a4 f5 26. exf5 Nxd5 27. Ne4 Qd7) 25. Ree1 Kh8 26. a4 Nc6 27. Qb3 a5 28. Nf1 Nb4 $1 29. Qd1 f5 $1 {Inhibits g4. Black wants to play ...f4.} 30. exf5 Bxf5 31. Bxb4 axb4 32. Ne3 Bd7 33. Be4 Qc7 34. Re2 g4 (34... Bc6 $11 {keeps the balance.}) 35. Ra2 $16 h5 36. h3 {[%cal Rh3g4]} Bh6 {[#]} 37. Nd5 (37. Qe2 $1 $16) 37... Qd8 $1 $14 38. hxg4 hxg4 (38... Bxg4 $11 {and Black stays safe.} 39. f3 Bd7) 39. Kg2 $18 Kg7 40. Qe2 Ra8 $2 {[%mdl 8192] This costs Black the game.} (40... Rf7 $16 {is a better chance.} 41. Rh1 Qg5) 41. Rh1 {[%cal Bb1h1,Bh1h5,Bh5g5][%mdl 32]} Be6 42. Raa1 {[%cal Oh1h6,Ba2a1,Ba1f1,Bf1h1][%mdl 32] Strongly threatening Rxh6!} Rh8 {[#]} 43. Nxb6 $1 {[%mdl 512]} Ra7 (43... Qxb6 $2 44. Bxa8 Qd8 45. Qxe5+ Qf6 46. Qc7+ Qf7 47. Qxc5 Rxa8 48. Qe5+ Qf6 49. Qxf6+ Kxf6 50. Rxh6+ $18) 44. Nd5 {Really sharp!} Rf7 (44... Qg5 {was necessary.} 45. Qb2 Kf7) 45. Rh5 Rhf8 (45... Bg5 $142) 46. Rf1 {aiming for Rfh1.} Bg5 47. Qb2 Bxd5 (47... Rf5 $18 48. Qe2 R5f7 49. Rh7+ Kg8) 48. Qxe5+ {White mates.} Bf6 49. Rg5+ $1 Kh6 50. Rh1# {Weighted Error Value: White=0.21 (precise) /Black=0.50} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.10"]
[Round "9.9"]
[White "Hakobyan, Aram"]
[Black "Niemann, Hans Moke"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2601"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,91,61,66,67,67,56,72,67,77,69,72,75,79,105,87,83,132,134,133,119,116,95,133,151,152,160,182,158,158,150,135,102,110,118,202,206,172,182,201,216,303,295,304,293,346,368,391,337,321,337,323,331,480,474,470,453,522,522,494,0,159,0,439,429,830,828,783,783,900,885,1251,1229,1206,1187,1058,797]} 1. e4 {Atlas,V} c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bxd7+ Bxd7 6. d4 cxd4 7. Qxd4 Nf6 8. Bg5 h6 9. Bxf6 gxf6 10. c4 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} Rc8 11. Nc3 e6 12. a4 {[#] White is better.} Be7 $146 ({Predecessor:} 12... h5 13. b4 h4 14. h3 Rh5 15. Rfe1 Be7 16. Re3 Qc7 17. Nd2 Kf8 18. Rb1 Kg8 {0-1 (80) Ovetchkin,R (2475)-Paragua,M (2529) Alushta 2004 CBM 103 [Atlas,V]}) 13. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} a5 14. b5 Qc7 15. Nd2 Qc5 16. Qd3 Bd8 (16... Rg8 $142) 17. e5 $16 f5 {Inhibits Nce4.} 18. exd6 ({Don't take} 18. Qxd6 $6 Qxd6 19. exd6 Bb6 $14) 18... Bf6 19. Rad1 Bg7 20. Ne2 {[%cal Bc3e2,Be2f4,Bf4h5][%mdl 32]} O-O 21. Nf4 Kh7 22. Nh5 {Pair of Knights!} Bh8 23. Qg3 Qd4 {Inhibits Qh4.} 24. Qf3 b6 25. Rfe1 Rcd8 {[#]} (25... e5 $16) 26. Qf4 $1 $18 Qxf4 27. Nxf4 Bc3 28. Re3 Bb4 (28... Bh8 {keeps fighting.} 29. Nb3 Rc8) 29. Nf3 Bc5 30. Re2 Bb4 31. Ne5 Bc3 32. Re3 Bxe5 33. Rxe5 Rc8 34. c5 bxc5 (34... Rfd8 {was necessary.} 35. cxb6 Rb8) 35. Nd3 c4 36. Nc5 Rfd8 {[#]} 37. Nb7 $1 {[%csl LRa5,LRd8]} Rg8 38. Nc5 $2 (38. Rc5 $18 {and White stays clearly on top.}) 38... Rgd8 $1 $16 {And now ...f6 would win.} 39. Nb7 $2 {White is much more active.} (39. Na6 $16) 39... Rg8 $1 $18 40. Rc5 {White is clearly winning.} c3 (40... Rxc5 $142 41. Nxc5 Rd8) 41. Rc7 Rg4 42. f4 (42. Rxd7 c2 43. Rxf7+ Kg6 $17) 42... c2 43. Rc1 Rxc7 44. dxc7 Rxf4 45. Rxc2 Rxa4 46. Nc5 {Weighted Error Value: White=0.19 (very precise) /Black=0.17 (very precise)} 1-0

[Event "Spring Chess Classic-A 2022"]
[Site "Saint Louis"]
[Date "2022.03.10"]
[Round "9.10"]
[White "Robson, Ray"]
[Black "Nyzhnyk, Illya"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2676"]
[BlackElo "2674"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2022.03.02"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,72,0,0,0,0,0,0,0,0,0,0,-83,-71,-145,-142,-143,-150,-135,0,-93,-113,-103,-103,-131,-127,-131,0,0,0,0,0,0,0,0,0,0,3,-2,-4,-2,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 {[%cal Bg8f6,Bf6e4,Be4f2][%mdl 32]} 3. d4 Nxe4 4. dxe5 Bc5 5. Bc4 Nxf2 (5... Bxf2+ $2 6. Kf1 $16) 6. Bxf7+ $1 {[%mdl 64] Decoy. C43: Petroff Defence: 3 d4.} Kxf7 {The main line 6...Kxf7 scores better than 6...Kf8.} 7. Qd5+ Kg6 8. Qxc5 Nxh1 9. Nc3 {Hoping for Nd5.} h6 {[#] Strongly threatening ...Kh7.} (9... d5 10. Nxd5 h6 11. Qc4 $16) 10. Qd4 $146 (10. Qc4 $11) ({Predecessor:} 10. Qc4 Kh7 11. Nd5 Re8 12. Bxh6 gxh6 13. O-O-O Re6 14. Nxc7 d5 15. exd6 Nf2 16. Nxe6 Bxe6 17. Qxe6 Nxd1 {½-½ (23) Motylev,A (2624)-Esipenko,A (2720) Ufa 2021}) 10... d6 $1 $17 11. Nd5 ({Better is} 11. Be3) 11... Nc6 12. Qe4+ Kf7 13. Be3 Re8 (13... dxe5 $1 $17 {And now ...Rf8 would win.} 14. O-O-O Be6 $1) 14. Bxh6 Rxe5 (14... gxh6 $2 15. Qh7+ Kf8 16. O-O-O $18) ({But not} 14... Nxe5 15. Ng5+ Qxg5 16. Bxg5 Nd3+ 17. cxd3 $16) 15. Nxe5+ Nxe5 ({Reject} 15... dxe5 $6 16. O-O-O Nf2 17. Qf3+ Kg8 18. Qxf2 $11) 16. O-O-O {Threatens to win with Qh7.} Nf2 17. Rf1 {[#]} Qf6 {[%mdl 512]} 18. Nxf6 $11 {Chess con chili. The position is equal.} Nxe4 19. Nxe4+ Kg8 20. Bf4 Ng6 21. Ng5 Bd7 22. Be3 b6 23. Bd4 Rf8 {Inhibits Rf7.} 24. Rxf8+ Nxf8 {[%mdl 4096] Endgame KBN-KBN} 25. Kd2 Ne6 26. Nxe6 Bxe6 {KB-KB} 27. a3 Kf7 28. h4 Bf5 29. c3 c5 30. Be3 Ke6 31. Bf4 Be4 32. g3 Bf3 33. Ke3 Bd1 34. Kd2 Bf3 35. Ke3 Bd1 36. Kd2 Bf3 {Weighted Error Value: White=0.12 (very precise) /Black=0.10 (very precise)} 1/2-1/2

