[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.17"]
[Round "1.1"]
[White "So, Wesley"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2772"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,100,15,14,24,10,10,14,13,2,18,18,17,22,29,20,43,29,29,9,34,32,31,20,
33,27,25,22,29,32,47,50,53,38,61,65,58,68,75,78,79,77,83,83,81,67,186,177,187,
186,182,174,167,188,184,150,196,214,216,219,212,153,147,177,178,154,181,106,
107,8,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4
Bc5 4. O-O Nf6 5. d3 O-O 6. h3 d6 7. c3 Ne7 {C54: Giuoco Piano: 4 c3 Nf6, main
lines with 5 d4 and 5 d3.} 8. Re1 Ng6 9. d4 Bb6 10. Bd3 {[#]} d5 $146 ({
Predecessor:} 10... h6 11. Be3 Nh5 12. Nbd2 Nhf4 13. Bf1 Qf6 14. Kh2 Re8 15. a4
a6 16. g3 exd4 17. cxd4 {1-0 (116) Ter Sahakyan,S (2640)-Quesada Perez,Y (2598)
Lichess.org INT 2020}) 11. exd5 exd4 12. c4 c6 13. Qc2 cxd5 14. c5 {[%cal
Rc5b6]} Bc7 15. Nxd4 Re8 16. Rxe8+ Qxe8 17. Nc3 Qe1+ 18. Bf1 Bd7 19. Qe2 Qxe2
20. Ndxe2 Rc8 21. Be3 Ne7 22. Rd1 a6 23. g4 Bc6 24. f3 h6 25. b4 Re8 26. Kf2
Bd7 27. Bf4 Bxf4 28. Nxf4 d4 (28... Be6 $14) 29. Rxd4 $18 Nc6 30. Rd6 Nxb4 31.
Rb6 a5 32. Rxb7 Bc6 33. Ra7 g5 {[#]} 34. Nd3 Rd8 35. Ne5 Rd2+ 36. Kg3 Rc2 {[#]}
37. a3 $1 Nbd5 38. Nxd5 ({Don't take} 38. Nxc6 $6 Rxc3 39. Ne5 (39. Rxa5 Ne4+ {
[%mdl 64] Double Attack} 40. Kh2 Nd2 $11) 39... Ne4+ 40. Kh2 Nd2 $14) 38...
Nxd5 39. Bd3 (39. Rxf7 {[#] gets mated.} Ne3 $1 40. Rf8+ Kxf8 41. Ng6+ Kg7 42.
Be2 Rxe2 43. h4 Nf1+ 44. Kh3 Rh2#) (39. h4 $18 Be8 40. Rxa5) 39... Rxc5 $16 40.
Nxf7 (40. Nxc6 $16 Rxc6 41. Rxa5) 40... Nf4 $1 $11 {[%cal Rf4d3] The position
is equal.} 41. Bf5 Bd5 42. Ne5 {aiming for Nd7.} (42. Nxh6+ {feels hotter.} Kf8
43. Be4 Bxe4 44. fxe4 Rc3+ 45. Kf2) 42... Rc3 43. Rxa5 Re3 {( -> ...Re2)} 44.
Nd3 Rxf3+ 45. Kh2 Rxh3+ 46. Kg1 {Hoping for Nxf4.} Rg3+ 47. Kf2 Rf3+ 48. Kg1 {
Nxf4 is the strong threat.} Rg3+ 49. Kf2 Rf3+ 50. Kg1 {Black must now prevent
Nxf4.} Rg3+ {Blacks defense is rewarded with a draw.  Weighted Error Value:
White=0.10/Black=0.07} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.17"]
[Round "1.2"]
[White "Vachier-Lagrave, Maxime"]
[Black "Svidler, Peter"]
[Result "1-0"]
[ECO "E73"]
[WhiteElo "2751"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,61,29,23,13,34,27,22,28,35,20,29,36,34,22,22,22,23,16,27,13,13,16,25,
0,0,0,0,0,7,4,10,0,0,0,0,0,0,0,263,256,256,256,256,256,29986,29986,29988,29989,
29990,29991]} 1. d4 Nf6 2. c4 g6 3. h4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 c5 7. d5
b5 8. cxb5 {E73: King's Indian: Averbakh Variation without 6...c5.} a6 9. a4
axb5 10. Bxb5 {The position is equal.} Ba6 11. Bd2 Bxb5 12. axb5 Nbd7 13. Nf3
Rxa1 14. Qxa1 Qb6 15. O-O {[#]} Rb8 $146 ({Predecessor:} 15... Ne8 16. Bg5 Nc7
17. Bxe7 Ra8 18. Qd1 Nxb5 19. Nxb5 Qxb5 20. Bxd6 Bxb2 21. Qc2 c4 {1/2-1/2 (41)
Maatman,N (2400)-Kokje,J (2222) Groningen 2019}) 16. Qa6 Ne8 17. Ra1 Kf8 18. h5
Nc7 19. Qa4 Ra8 20. Qd1 {And now Rxa8+ would win.} Rxa1 21. Qxa1 Ne5 22. h6
Nxf3+ 23. gxf3 Bxc3 24. Bxc3 {Strongly threatening Ba5.} Qxb5 25. b4 Ne8 $2 {
[%mdl 8192]} (25... cxb4 $11 {and Black stays safe.} 26. Bxb4 Ke8) 26. bxc5 $18
dxc5 27. Bg7+ Kg8 {[#]} 28. Qa8 $1 {[%cal Ra8d8] Qd8! is the strong threat.} c4
$2 (28... Qd7 $18 29. e5 e6) 29. Qd8 {White mates.} Qa4 30. Kg2 Qb5 {[#]} 31.
Bb2 $1 {[%mdl 576] Back Rank.  Weighted Error Value: White=0.03/Black=0.45} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.17"]
[Round "1.3"]
[White "Xiong, Jeffery"]
[Black "Rapport, Richard"]
[Result "1/2-1/2"]
[ECO "E38"]
[WhiteElo "2710"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,113,42,37,44,43,34,33,46,12,13,11,1,18,15,0,0,0,0,0,0,0,0,0,0,0,0,0,
20,7,7,7,7,7,10,9,18,18,22,8,8,8,8,8,8,8,8,8,8,8,8,8,12,0,8,8,12,8,8,8,14,8,8,
8,14,14,14,0,14,13,13,13,14,13,13,0,14,8,14,14,14,14,14,14,14,14,14,14,14,14,
14,14,14,14,14,14,14,0,14,0,14,0,22,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5
5. dxc5 Qa5 6. Bd2 Qxc5 7. e3 d5 {E38: Nimzo-Indian: Classical: 4...c5.} 8. a3
Bxc3 9. Bxc3 dxc4 {White is slightly better.} 10. Bb4 Qc6 {The position is
equal.} 11. Qxc4 Qxc4 12. Bxc4 Nc6 13. Bc3 (13. Bd2 {seems wilder.} b6 14. Nf3
O-O 15. O-O Bb7 16. Rfd1) 13... Ne4 14. Rc1 Nxc3 15. Rxc3 Bd7 16. Nf3 {[#]} Rc8
$146 ({Predecessor:} 16... Ke7 17. Ke2 Rac8 18. b4 Nxb4 19. axb4 b5 20. Ra1
Rxc4 21. Rxc4 bxc4 22. Rxa7 f6 {1-0 (29) Nikolov,M (2542)-Kalajdzhiev,R (2055)
Kiten 2021}) 17. Bd3 Ke7 18. Ke2 h6 19. Rhc1 Nb8 20. Ne5 Rxc3 21. Rxc3 {
[#] And now Rc7 would win.} Rc8 22. Kd2 Rxc3 23. Kxc3 $11 {[%mdl 4096] Endgame
KBN-KBN} Bc8 24. f4 Nd7 25. Nxd7 Bxd7 {KB-KB} 26. e4 f6 27. Kd4 Kd6 28. e5+
fxe5+ 29. fxe5+ Ke7 30. Be4 b6 31. Kc4 Kd8 32. Kd4 Ke7 33. h4 Bb5 34. g3 Kd7
35. Bc2 Be2 36. Ba4+ Kc7 37. Ke3 Bh5 38. Kf4 Be2 39. g4 Kd8 40. Bc6 Ke7 41. g5
Bh5 42. b4 Bd1 43. a4 Bh5 44. Bb5 Bd1 45. a5 Bh5 46. Bf1 Be8 47. Bg2 Bh5 48.
Bc6 Bd1 49. gxh6 gxh6 50. Ke3 Bh5 51. Kd3 Kd8 52. axb6 axb6 53. Ke3 Ke7 54. Kd3
Kd8 55. Ke3 Ke7 56. Kd3 Kd8 57. Ke3 {Weighted Error Value: White=0.04/Black=0.
02} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.17"]
[Round "1.4"]
[White "Caruana, Fabiano"]
[Black "Shankland, Sam"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2806"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,75,5,-18,35,25,25,-12,-6,-19,-23,-45,16,14,46,44,35,8,0,0,58,56,60,
54,57,64,42,61,56,54,59,59,44,58,68,70,81,76,77,75,81,77,309,312,317,308,315,
312,554,589,582,582,565,581,569,556,522,455,1002,991,963,971,935,925]} 1. d4
Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6 5. h3 c5 6. Nbd2 cxd4 7. exd4 O-O 8. Be2 Qb6
{A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} (8... Nc6 $11) 9.
Nc4 Qc7 {[#]} 10. Ne3 $146 ({Predecessor:} 10. O-O Bf5 11. c3 Nbd7 12. Ne3 e6
13. Nc4 Ne8 14. a4 e5 15. dxe5 dxe5 16. Bg3 {1-0 (45) Starke,R (1931)-Kamari,I
(1562) Berlin 2017}) 10... Nc6 {The position is equal.} 11. c3 e5 12. Bh2 Qe7 (
12... exd4 $1 $15 13. Nxd4 Nxd4 14. Qxd4 Ng4 $1) 13. O-O $36 {[%mdl 2048]
Black is under pressure.} e4 14. Ne1 d5 15. N1c2 Be6 16. Qe1 Nd7 (16... Rad8
$11) 17. f3 $1 $14 f5 {Threatening ...f4.} 18. fxe4 $1 fxe4 19. Bf4 Rf7 20. Qg3
Nf6 21. Rf2 Qd7 22. Raf1 Raf8 23. Qh4 Ne8 24. Ng4 Nd6 25. Nce3 Ne7 26. Ne5 Bxe5
27. Bxe5 Ndf5 $2 {[#] This costs Black the game.} (27... Rxf2 $16 28. Rxf2 Rxf2
29. Kxf2 (29. Qxf2 Nc6 $14) 29... Nc6) 28. Ng4 $1 $18 {Rxf5! is the strong
threat.} h5 ({Worse is} 28... Nxh4 29. Nh6#) 29. Qg5 hxg4 30. hxg4 Ng7 (30...
e3 31. Rf3 Rh7) 31. Qh6 {Threatening mate with Bxg7.White is clearly winning.}
Nef5 32. gxf5 Rxf5 33. Rxf5 Rxf5 34. Rxf5 Bxf5 35. g4 Be6 (35... Bxg4 $142 36.
Bxg7 {[%mdl 64] Overworked Piece} Qxg7 37. Qxg7+ Kxg7 38. Bxg4 Kf7) 36. Qxg6
Qf7 37. Qh6 e3 {[#]} 38. Bf3 $1 {[%mdl 512] Weighted Error Value: White=0.07/
Black=0.37} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.17"]
[Round "1.5"]
[White "Swiercz, Dariusz"]
[Black "Dominguez Perez, Leinier"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2655"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,116,17,22,20,13,18,18,13,13,0,17,16,26,-5,-6,-6,-6,-4,0,-9,-8,-10,-6,
-13,-8,-16,-2,-14,-14,-18,-4,-64,-12,-13,0,-52,-8,-10,-8,-12,-6,-7,-7,-7,-16,
-27,-38,-97,-17,-18,-18,-18,-5,-162,-156,-164,-140,-463,-458,-456,-444,-428,
-431,-425,-424,-368,-241,-282,-241,-241,-142,-153,-150,-145,0,-166,-168,-241,
-240,-303,-303,-322,-322,-558,-521,-581,-560,-998,-967,-700,-674,-1256,-1117,
-1129,-1127,-1045,-699]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6.
Bd3 Bd6 7. O-O O-O 8. c4 c6 9. Nc3 Nxc3 10. bxc3 dxc4 11. Bxc4 Bf5 12. Re1 {
C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} Nd7 13. Bg5 Qa5 14.
Nh4 {Threatens to win with Be7.The position is equal.} Rae8 15. Nxf5 {[#]}
Rxe1+ $146 ({Predecessor:} 15... Qxf5 16. Be3 Nf6 17. Bd3 Qd7 18. Qf3 Qg4 19.
Qxg4 Nxg4 20. g3 Nxe3 21. Rxe3 c5 {1/2-1/2 (43) Nakamura,H (2736)-Aronian,L 
(2773) chess24.com INT 2020}) 16. Qxe1 Qxf5 17. Bh4 (17. Qd2 {keeps more
tension.} h6 18. Be3 Re8 19. Bd3 Qe6 20. Qc2) 17... Qh5 18. Bg3 Bxg3 19. hxg3
Nf6 20. Be2 Qa5 21. Bf3 Re8 22. Qd2 h5 23. Rc1 Re7 24. Qc2 g6 25. Qb2 Kg7 26.
Be2 (26. c4 $11) 26... Qg5 ({Black should play} 26... Qb6 $15 27. Qc2 c5) 27.
Bf3 $11 Qa5 28. Be2 c5 29. Bf3 cxd4 30. cxd4 Re1+ (30... Nd5 {is interesting.}
31. a3 Qb6 32. Qxb6 Nxb6 33. Rc5 Rd7) 31. Rxe1 Qxe1+ 32. Kh2 b6 33. Qc2 Qb4 34.
Qd3 (34. Qd1 $15) 34... a5 (34... Qb2 $17 35. d5 Qxa2) 35. a3 Qd6 36. Kg1 b5
37. Bd1 $2 (37. d5 $1 $11 {and White has nothing to worry.}) 37... b4 $19 38.
axb4 Qxb4 39. Bb3 $2 {[%mdl 8192]} (39. Kh2 $17) 39... a4 40. Bc4 a3 41. f3 Qb2
42. Qb3 Qxd4+ 43. Kh2 Qa7 44. Qc3 Qc7 {Hoping for ...h4.} ({Not} 44... a2 45.
Qa1 $17) 45. Qd4 {[#]} Qe7 ({Black should try} 45... Kh7 $1 $19 46. Ba2 Ng8)
46. Bb3 $17 Kh7 47. Qf4 Kg7 48. Qd4 Kg8 49. Qd3 (49. Qh4 {was worth a try.})
49... Kh7 $19 50. Qd4 Ng8 51. Ba2 {[#]} Nh6 $1 52. Bb1 $2 (52. Qc4) 52... Qe1 {
Black is clearly winning.} 53. Qb6 Qc3 54. Kg1 Qc1+ 55. Kh2 Qb2 56. Qxb2 axb2
57. Kg1 Nf5 58. Kf2 Nd4 {Weighted Error Value: White=0.44/Black=0.17} 0-1

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.18"]
[Round "2.1"]
[White "Dominguez Perez, Leinier"]
[Black "Caruana, Fabiano"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2758"]
[BlackElo "2806"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,102,9,8,14,17,18,11,2,0,14,0,9,8,41,41,41,41,41,39,42,46,59,58,39,42,
64,59,79,48,52,58,56,48,51,61,87,89,89,99,94,31,50,20,23,24,25,22,23,24,19,20,
20,20,20,17,37,17,21,23,29,0,3,0,13,0,0,2,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. O-O h6 7. Re1
O-O 8. h3 Bb6 {8...a5 is the modern continuation. C54: Giuoco Piano: 4 c3 Nf6,
main lines with 5 d4 and 5 d3.} 9. Nbd2 Ne7 10. a4 {[#] Hoping for a5.} c6 11.
d4 Ng6 12. Bf1 Re8 13. Qc2 {[#]} d5 $146 ({Predecessor:} 13... Bc7 14. dxe5
Nxe5 15. Nxe5 dxe5 16. Nc4 a5 17. Be3 Be6 18. b4 Bxc4 19. Bxc4 Bb6 {1/2-1/2 
(46) Svidler,P (2714)-So,W (2770) Paris 2021}) 14. exd5 {[%cal Rd4e5]} exd4 15.
Rxe8+ Qxe8 16. a5 Bc7 17. dxc6 dxc3 18. cxb7 Bxb7 19. Qxc3 Nd5 20. Qc5 Ngf4 21.
Nc4 {Bxf4 is the strong threat.} Ne6 22. Qa3 Rd8 23. Bd2 Ndf4 24. a6 Ba8 {[#]}
25. Ba5 $1 Bxa5 26. Nxa5 Qd7 27. Re1 ({White should play} 27. b4 $16) 27... Qd5
$14 28. Re3 Qf5 29. Nb7 Rd1 {Strongly threatening ...Nxh3+!} 30. Re1 Rxe1 31.
Nxe1 {Black must now prevent Qe3.} Qe4 32. Nf3 {Threatens to win with Qe7.}
Bxb7 33. axb7 Qxb7 34. g3 Nh5 35. Bc4 Qe4 36. Bxe6 fxe6 37. Nd2 Qd4 {The
position is equal.} 38. Nf3 Qd5 39. Nh2 a5 40. Ng4 Nf6 41. Nxf6+ gxf6 $11 {
[%mdl 4096] Endgame KQ-KQ} 42. Qe7 Qe5 43. b3 (43. Qb7 {is interesting.} Qf5
44. b3 Kf8 45. Kg2 h5 46. b4) 43... h5 44. h4 (44. Kf1 {feels hotter.} Qf5 45.
Kg1 Qe5) 44... Qe1+ 45. Kg2 Qe4+ 46. Kh2 Qf5 47. Qe8+ (47. Qa7 {seems wilder.}
Qd5 48. Qb6 Kf7 49. Qa7+ Kg6 50. Qe7) 47... Kg7 48. Qe7+ Kg6 49. Qe8+ Kg7 50.
Qe7+ Kg6 51. Qe8+ Kg7 {Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.18"]
[Round "2.2"]
[White "Shankland, Sam"]
[Black "Xiong, Jeffery"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2709"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,126,38,32,37,30,54,49,51,42,91,81,100,40,43,45,63,51,83,75,99,76,77,
23,39,16,48,56,76,18,14,0,0,0,0,0,0,0,0,0,0,0,50,61,69,73,68,28,20,18,18,18,32,
32,26,25,25,31,34,34,34,31,86,0,0,0,0,0,12,0,0,0,0,0,6,0,8,8,8,8,8,8,8,8,21,8,
8,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 {Havasi,G} c5 2.
Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. f3 Bg7 8. Be3 O-O 9. Be2
Nh5 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0.} 10. g3 {[#]} Nf6
$146 ({Predecessor:} 10... Nxd4 11. Bxd4 Be6 12. f4 Nf6 13. O-O Rc8 14. b3 Qa5
15. f5 Bd7 16. a3 e6 17. b4 {1-0 (41) So,W (2788)-Mamedov,R (2658) Shamkir
2015 CBM 166 [Havasi,G]}) 11. Qd2 Bd7 {White is slightly better.} 12. O-O-O a5
13. g4 a4 14. Nxc6 (14. Kb1 $16) 14... Bxc6 $14 15. h4 Qa5 16. Bd4 Rfc8 17. h5
a3 18. b3 b5 19. hxg6 ({White should try} 19. Kb1 $16) 19... hxg6 $11 20. Kb1 {
[%cal Rc4b5]} bxc4 $1 21. Bxc4 Bb7 22. g5 (22. Rh2 $16) 22... Nh5 23. Bxg7 Kxg7
24. Nd5 Qxd2 25. Rxd2 Rab8 26. Rc1 ({Don't play} 26. Nxe7 Rc7 $17) 26... Bxd5
27. Rxd5 Nf4 28. Ra5 Ra8 29. b4 f6 30. Rxa8 Rxa8 $14 {[%mdl 4096] Endgame
KRB-KRN} 31. Kc2 fxg5 32. Kb3 Kf6 33. b5 Ke5 34. Kb4 g4 $1 {[%cal Rg4f3]} 35.
fxg4 {aiming for b6.} Kxe4 36. Re1+ Kd4 37. Rxe7 {Black must now prevent b6.}
Rc8 $1 {[%cal Rc8c4]} 38. Bf7 {And now b6 would win.} Nd3+ {[#]} (38... d5 $14)
39. Kxa3 ({White should play} 39. Ka5 $1 $16) 39... Ra8+ $11 {The position is
equal.} 40. Kb3 Nc5+ 41. Kb2 Nd3+ 42. Kb3 (42. Ka1 {keeps more tension.} Rc8
43. a3 g5 44. Ba2 Rb8 45. Re6) 42... Nc5+ 43. Kc2 d5 44. Kb1 Na4 45. Kc1 Nc3
46. b6 Nxa2+ 47. Kd2 {[#] Threatens to win with Re8.} Rb8 48. b7 Nb4 49. Be6
Kc5 {Strongly threatening ...Kd6.} 50. Bc8 Nc6 51. Rg7 g5 52. Ke3 Na5 53. Kd3
Kd6 $1 54. Rd7+ Kc6 {[%cal Ra5b7]} 55. Kd4 Nxb7 56. Rxb7 Rxc8 {KR-KR} 57. Rg7
Kd6 {Hoping for ...Rc4+.} 58. Rg6+ Ke7 59. Rxg5 Kf6 60. Rxd5 Re8 61. g5+ Kg6
62. Re5 Rxe5 63. Kxe5 Kxg5 {Weighted Error Value: White=0.09/Black=0.06}
1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.18"]
[Round "2.3"]
[White "Swiercz, Dariusz"]
[Black "So, Wesley"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "2655"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,90,30,0,0,-2,0,0,-6,0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,10,-20,-3,-8,-6,
-20,0,-43,-43,-50,-21,-4,0,-20,-10,-10,-8,-41,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,
-8,-8,-24,-24,-28,-35,-203,-190,-371,-371,-371,-364,-364,-364,-29971,-29974,
-29978,-29979,-29979,-29980,-29980,-29981,-29981,-29982]} 1. e4 e5 2. Nf3 Nc6
3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3
Bd7 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} (9... Ne7 10. Nc3 Bd7 11. b3
b6 12. Bb2 Kc8 13. Rad1 h6 14. Rd2 c5 15. Rfd1 Be6 16. Ne2 g5 17. Nh2 Kb7 18.
Ng4 Nc6 19. c4 a5 20. a4 Bxg4 21. hxg4 Bg7 22. Ng3 Bxe5 23. Bxe5 Nxe5 24. f3
Rae8 25. Kf2 Kc8 26. Nf5 {1/2-1/2 (45) Swiercz,D (2659)-So,W (2765) Chess.com
INT 2020}) 10. Rd1 Be7 11. g4 Nh4 {The position is equal.} 12. Nxh4 Bxh4 13.
Nd2 Kc8 14. Nf3 Be7 15. Bg5 {is now more promising than 15.Rd3.} Bc5 16. Rd3 {
[#] Strongly threatening Rad1.} Be6 17. Be3 Bxe3 18. Rxe3 Kd7 19. Nd4 Rad8 {[#]
} (19... h5 {feels hotter.} 20. Rd1 Ke7 21. Nf5+ Kf8 22. Nd4 Ke7) 20. f4 $146 (
20. Rd3 {seems wilder.} Kc8 21. f4 Bc4 22. Rdd1 h5 23. b3) ({Predecessor:} 20.
Rd3 Kc8 21. Nxe6 Rxd3 22. cxd3 fxe6 23. Kf1 h5 {1/2-1/2 (23) Janisch,M (2416)
-Markus,R (2282) ICCF email 2017}) 20... Ke7 21. Nxe6 fxe6 $11 {[%mdl 4096]
Endgame KRR-KRR} 22. Rf1 h5 23. f5 hxg4 24. hxg4 Rh4 (24... Rd4 $5 {[%cal
Rd4g4]} 25. f6+ Kf7 $15) 25. f6+ Kf7 26. Re4 Rd2 {aiming for ...Rhh2.} 27.
fxg7+ Kxg7 {Threatens to win with ...Rhh2.} 28. Rf2 (28. Rf6 {with more
complications.} Rhh2 29. Ref4 Rdg2+ 30. Kf1 Rxc2 31. Rf7+) 28... Rxf2 (28...
Rh1+ {looks sharper.} 29. Kg2 Rh2+ 30. Kxh2 Rxf2+ 31. Kg3 Rxc2 32. Rd4 Rxb2 33.
Rd7+ Kg6) 29. Kxf2 $15 {KR-KR} Rh2+ 30. Kf3 Rxc2 31. Rd4 Rxb2 {Hoping for ...
a5.} 32. Rd7+ Kg6 33. Rxc7 c5 34. Re7 Rb6 35. Rc7 a6 36. Rxc5 Rc6 37. Ra5 {
This costs White the game.} (37. Rxc6 $15 bxc6 38. Ke4) 37... Rc3+ $19 38. Ke4
$2 (38. Kf2 {was called for.}) 38... Rc4+ 39. Kd3 Rxg4 40. Rc5 {If only White
now had time for Rc7....} Kf5 41. Kc3 $2 {[#]} (41. Ra5 $19) 41... b5 {Black
mates.} 42. Kb3 Rc4 {[%mdl 64] Deflection} 43. Rxc4 bxc4+ 44. Kxc4 Kxe5 45. a4
Kf4 {Weighted Error Value: White=0.39/Black=0.03} 0-1

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.18"]
[Round "2.4"]
[White "Rapport, Richard"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2763"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,72,22,27,27,22,21,33,23,20,14,16,24,24,35,23,30,35,39,26,64,35,35,23,
30,16,29,31,20,12,18,15,14,24,16,-10,22,0,18,16,17,5,11,8,20,20,19,21,30,22,22,
22,30,30,34,28,30,0,31,0,12,0,34]} 1. Nf3 c5 2. c4 Nf6 3. g3 g6 4. Bg2 Bg7 5.
d4 cxd4 6. Nxd4 O-O 7. Nc3 Qc7 {E60: King's Indian: Unusual lines and
Fianchetto Variation without Nc3.} 8. Qd3 Nc6 9. O-O d6 {White is slightly
better. 9...d6 has lost popularity.} 10. Nxc6 bxc6 11. Bf4 Nh5 12. Bg5 Rb8 13.
b3 {[#]} h6 $146 ({Predecessor:} 13... Qa5 14. Bd2 Bb7 15. b4 Qc7 16. Rab1 Nf6
17. Bf4 Ng4 18. c5 Ne5 19. cxd6 exd6 20. Bxe5 Bxe5 {1/2-1/2 (32) Jakovenko,D 
(2681)-Vachier Lagrave,M (2774) Khanty Mansiysk 2019}) 14. Bd2 Nf6 15. Rac1 a5
16. h3 Rd8 17. e4 Nd7 18. Rfd1 Nc5 19. Qe2 e5 20. Kh2 Kh7 21. Qf1 h5 22. Bg5
Re8 23. Qe1 Ne6 (23... a4 $5) 24. Bd2 Ra8 25. Be3 h4 26. Na4 hxg3+ 27. fxg3 c5
28. Qd2 Nd4 29. Rf1 Be6 30. Rf2 Reb8 31. h4 Qd7 32. Rcf1 Ra7 33. Qd1 Bg4 34.
Qd2 Be6 35. Qd1 Bg4 36. Qd2 Be6 {Weighted Error Value: White=0.07/Black=0.05}
1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.18"]
[Round "2.5"]
[White "Svidler, Peter"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2714"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,91,0,0,0,0,0,0,0,0,-46,-41,-48,-36,-42,-37,-45,-36,-36,-37,-41,-47,
-27,-37,-33,-29,-48,-44,-67,-81,-71,-81,-78,-69,-77,-70,-66,-64,-56,-65,-67,
-29,-28,-16,-27,-11,-11,-11,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6.
b4 Be7 7. O-O {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} d5
8. exd5 Nxd5 9. Re1 $1 {[%mdl 4] is more profitable than 9.b5 at the moment.}
Bf6 10. Ba3 Re8 11. Nbd2 {[#]} Nxc3 $146 ({Predecessor:} 11... b5 12. Bxd5 Qxd5
13. Ne4 Be7 14. Bb2 a5 15. a4 Be6 16. axb5 Qxb5 17. c4 Qxb4 18. Bc3 Qb6 19.
Nxe5 Nxe5 {1/2-1/2 (19) Ponkratov,P (2530)-Khairullin,I (2575) Zvenigorod 2008}
) 12. Qb3 {[#]} Be6 13. Bxe6 (13. Qxc3 $2 e4 $19) 13... Rxe6 14. b5 ({Avoid
the trap} 14. Qxc3 $2 e4 $19) 14... Nd4 {[%cal Rd4b3]} 15. Nxd4 exd4 ({Don't
go for} 15... Qxd4 $2 16. Bb2 $18) 16. Rxe6 fxe6 17. Qxe6+ Kh8 18. Re1 Nxb5 19.
Be7 Bxe7 20. Qxe7 Qxe7 21. Rxe7 $15 {[%mdl 4096] Endgame KRN-KRN} b6 22. Ne4 c5
23. Kf1 Nc3 24. Nxc3 dxc3 {KR-KR} 25. Ke2 h6 26. Kd1 b5 27. Rc7 $1 Rf8 28. f3 {
The position is equal.} Rf5 29. Rxa7 Re5 30. a3 Re3 31. Rb7 Rxd3+ 32. Kc2 Rd2+
33. Kxc3 Rxg2 34. Rxb5 Rxh2 35. Rxc5 Rf2 36. Rf5 g6 37. Rf4 Kg7 38. Kd3 g5 39.
Ke3 Ra2 (39... gxf4+ 40. Kxf2 Kf7 41. Kg2 h5 42. Kh3 Kf8 43. Kh4 Ke7 44. Kxh5)
(39... Rc2 {looks sharper.} 40. Ra4 Rc3+ 41. Kf2 h5 42. Ra7+ Kf6) 40. Ra4 h5
41. Ra7+ Kg6 42. Ra6+ Kf5 43. Ra5+ Kg6 44. Ra6+ Kf5 45. Ra5+ Kg6 46. Ra6+ {
Weighted Error Value: White=0.03/Black=0.02} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.19"]
[Round "3.1"]
[White "So, Wesley"]
[Black "Svidler, Peter"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2772"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,55,20,12,22,16,17,16,21,20,14,6,17,18,13,0,28,14,28,31,65,60,54,56,
70,84,90,83,91,79,91,83,98,107,91,91,92,91,199,194,201,194,324,297,349,349]} 1.
c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e5 6. a3 a5 7. d3 Nge7 {A37:
Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3.} 8. Nd2 d6 9. Nf1 O-O {The
position is equal.} 10. Ne3 Rb8 11. Rb1 {[%cal Ba1b1,Bb1b4,Bb4b6][%mdl 32]} Nd4
12. Bd2 Bd7 13. O-O Bc6 14. b4 axb4 15. axb4 {[#]} cxb4 $146 ({Predecessor:} 
15... b6 16. Bxc6 Ndxc6 17. b5 Nd4 18. Ned5 Nxd5 19. Nxd5 Ne6 20. Ra1 Nc7 21.
Nxc7 Qxc7 {1-0 (43) Eljanov,P (2681)-Krivenko,S (2341) St Petersburg 2012}) 16.
Rxb4 Bxg2 17. Kxg2 Qd7 18. Ned5 Nec6 19. Rb6 f5 20. f3 Rf7 21. Be3 h5 22. Qd2
Ne6 23. Rfb1 Kh7 24. h4 f4 (24... Qc8 $16 25. Bf2 Bh6) 25. gxf4 $18 exf4 26.
Bf2 Ncd4 (26... Kg8 $142 27. Ne4 Kh8 28. Rxc6 Qxc6) 27. Bxd4 Bxd4 28. Ne4 {
Weighted Error Value: White=0.04/Black=0.19} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.19"]
[Round "3.2"]
[White "Mamedyarov, Shakhriyar"]
[Black "Rapport, Richard"]
[Result "1-0"]
[ECO "D49"]
[WhiteElo "2782"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,107,16,62,5,0,0,0,0,0,0,0,0,0,-2,-14,-58,0,-22,0,0,0,7,12,17,22,0,0,
0,0,-3,-2,-2,-3,-7,-3,-8,0,0,0,0,1,0,46,0,4,0,87,0,0,-20,-20,-18,-18,-14,15,
-44,187,0,838,823,883,890,890,890,569,532,1516,1222,29975,29976,29976,29977,
29977,29978,29983,29984,29984,29985,29985,29986,29986,29987,29987,29988,29988,
29987]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4
b5 8. Bd3 a6 9. e4 c5 10. e5 cxd4 11. Nxb5 axb5 {11...axb5 scores better than
11...Nxe5.} 12. exf6 Qb6 (12... Qxf6 $2 13. Bg5 $18) 13. O-O {D49: Semi-Slav:
Meran System: Main line with 9 e4 c5 10 e5 cxd4 11 Nxb5.} (13. fxg7 $1 $14 Bxg7
14. O-O) 13... Nxf6 $11 14. Nxd4 Bd7 $1 15. Nf3 {The position is equal.} Bd6
16. Be3 Qb8 17. Bd4 O-O 18. Re1 Rd8 {[#]} 19. Rc1 $146 ({Predecessor:} 19. Qc2
h6 20. Rad1 Be7 21. b3 Be8 22. Qe2 Qb7 23. Ba1 Qa7 24. Bb1 Rxd1 25. Rxd1 {
1/2-1/2 (49) Schoen,W (2390)-Kreutzkamp,R (2265) Germany 1995}) 19... Rxa2 (
19... Be8 $1 $15) 20. Bb1 (20. Ng5 $5 {[%cal Rd4f6]} Bxh2+ 21. Kh1 $17) 20...
Ra6 21. Bxf6 gxf6 22. Qd4 $1 {[%cal Rd4f6]} Kg7 23. Qg4+ Kf8 24. Qh4 Ke7 25. g3
(25. Qxh7 $2 Rh8 $19) 25... Ra4 26. Qxh7 Rh8 27. Qd3 Qb6 28. Rcd1 Bc8 29. Bc2
$132 {[%mdl 2048] White puts up resistance} Rg4 30. Nd4 {Nf5+ is the strong
threat.} Be5 31. Nxb5 Qc5 32. Nc3 Kf8 (32... Rd4 $5 {[%cal Rd4d3]} 33. Qe3 Rc4
$14) 33. Ne4 Qc6 34. b4 {Hoping for b5.} Ba6 (34... Kg7 $11) 35. Qf3 (35. Qa3
$1 $16 {Strongly threatening b5+.} Bb5 36. Nc5) 35... f5 {And now ...Bb7 would
win.} 36. Nd2 Qxc2 37. Rxe5 {[#]} Bb7 $1 38. Qb3 {[%cal Rb3c2]} Qc7 39. Qb2 (
39. Rc5 $11 Qf4 40. Nf1 Qxb4 41. Qe3) 39... Rgg8 $2 {Black is on the road to
losing.} ({Weaker is} 39... Qc6 40. f3 $16) (39... Qd8 $15 {keeps the upper
hand.} 40. Rb5 Rgh4 $1) 40. f3 $2 (40. Rc5 $1 $18 {[%cal Rc5c7]} Qd8 41. Qe5)
40... f6 $2 {[%mdl 8192]} (40... f4 $11 41. g4 Qd8) 41. Rxe6 $18 Rxg3+ 42. Kf1
$1 ({Not} 42. hxg3 $2 Qxg3+ 43. Kf1 Rh1+ 44. Ke2 Bxf3+ $1 {[%mdl 512]} 45. Nxf3
Qg2+ 46. Ke3 Qxb2 $19) 42... Rxh2 43. Qxf6+ {[%mdl 64] Double Attack} Qf7 44.
Qe5 $1 {[%cal Re5d6]} f4 45. Rf6 {[%mdl 64] Double Attack} Ba6+ 46. Rxa6 {
White mates.} Rh1+ 47. Kf2 Rh2+ 48. Ke1 Rh1+ 49. Nf1 Rxf1+ 50. Kxf1 Qc4+ {[#]}
51. Ke1 $1 ({Wrong is} 51. Kf2 $2 Qc2+ 52. Qe2 {[#]} Rg2+ $3 {[%mdl 512]} 53.
Kxg2 Qxe2+ 54. Kh3 Qxf3+ 55. Kh4 Qxd1 $19) 51... Rg1+ 52. Kf2 Qc2+ 53. Kxg1
Qxd1+ 54. Kf2 {Weighted Error Value: White=0.15/Black=0.31} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.19"]
[Round "3.3"]
[White "Vachier-Lagrave, Maxime"]
[Black "Shankland, Sam"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2751"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,93,20,19,22,24,29,37,41,37,27,18,0,9,0,0,0,-18,-15,-4,-40,-22,-33,0,
0,87,62,82,51,74,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29,220,225,1016,980,
859,604,1275,1114,837,811,593,512,503,486,481,474,474,433,433,433,1168,1231,
2535,2359,1998,1870,29973,29975,29974,29967,29974,11468]} 1. e4 e5 2. Nf3 Nc6
3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O a6 7. a4 $1 {[%mdl 4] is now more
promising than 7.Bb3.} h6 8. Re1 {C54: Giuoco Piano: 4 c3 Nf6, main lines with
5 d4 and 5 d3.} Ba7 9. Nbd2 Be6 10. Bxe6 {White is slightly better.} fxe6 11.
Nf1 {[#]} a5 $146 ({Predecessor:} 11... O-O 12. Ng3 Qd7 13. h3 Rf7 14. b4 Raf8
15. b5 Ne7 16. bxa6 bxa6 17. d4 exd4 18. cxd4 {1/2-1/2 (60) Paravyan,D (2627)
-Krejci,J (2570) Prague 2019}) 12. Ng3 Qd7 13. Be3 Bxe3 14. Rxe3 g5 15. d4
O-O-O 16. d5 (16. b4 $5) 16... exd5 17. exd5 Ne7 18. c4 Ng4 (18... c6 $11 {
keeps the balance.}) 19. Rb3 Rdf8 20. Qe1 b6 21. Rb5 (21. Rba3 $16) 21... Nxf2
$1 $11 22. Qxf2 {aiming for Qe2.} (22. Kxf2 $2 g4 $19) 22... g4 23. Nxe5 Qxb5
24. axb5 Rxf2 25. Kxf2 dxe5 {[%mdl 4096] Endgame KRN-KRN} 26. Ke3 {Hoping for
b4!} Rf8 $1 27. Rf1 Rxf1 28. Nxf1 {KN-KN} Nf5+ 29. Kd3 Kd7 30. Nd2 Nd6 31. Ne4
Ke7 {[#] Loses the game.} (31... Ne8 $1 $11) 32. Nxd6 $1 $18 cxd6 {KP-KP} (
32... Kxd6 33. b3 Kc5) 33. Ke4 Kf6 34. b3 Kg6 35. c5 $1 {[%cal Rc5b6]} dxc5 36.
d6 {White threatens d7 and mate.} Kf7 37. Kd5 {Strongly threatening Kc6.} e4 {
[#]} 38. Kc6 $1 {And now d7 would win.} e3 {intending ...e2.} 39. d7 e2 ({
Wrong is} 39... Ke7 $2 40. Kc7) 40. d8=Q e1=Q 41. Kxb6 {KQ-KQ} Qe6+ (41... Qb4
$142 42. Qd5+ Kg6) 42. Ka7 c4 43. bxc4 a4 44. b6 {[%cal Bb5b6,Bb6b7][%mdl 32]}
a3 45. b7 {White mates.} a2 46. Qc7+ Kg6 47. Qa5 {Weighted Error Value:
White=0.09/Black=0.35} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.19"]
[Round "3.4"]
[White "Xiong, Jeffery"]
[Black "Dominguez Perez, Leinier"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2710"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,68,-4,-8,-2,0,0,3,-6,4,6,20,8,20,5,29,7,7,0,7,7,7,5,4,8,2,0,2,0,0,0,
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 Nf6 3. Nc3 Nc6
4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 O-O 8. O-O d5 9. exd5 cxd5 10. h3 $1
{[%mdl 4] 10.h3 is setting a new trend. C47: Scotch Four Knights and Four
Knights with 4 g3.} c6 11. Qf3 Bd6 12. Re1 Re8 13. Rxe8+ Qxe8 14. Bf4 Qe7 {[#]}
15. Na4 $146 ({Predecessor:} 15. b3 Bxf4 16. Qxf4 Bb7 17. Na4 c5 18. Qe3 Qxe3
19. fxe3 Rc8 20. c4 dxc4 21. Bxc4 Kf8 22. Rc1 Ke7 23. Bd3 Kd6 24. Rd1 Ke7 25.
Rc1 Kd6 26. Rd1 Ke7 {1/2-1/2 (26) Burg,T (2518)-Van den Doel,E (2573)
Amsterdam 2017}) 15... c5 16. Bxd6 Qxd6 {The position is equal.} 17. c4 Bd7 18.
Nc3 {[%cal Rc3d5]} Rb8 19. Nxd5 Nxd5 20. Rd1 {Black should prevent b3.} Rxb2 {
aiming for ...Ba4.} 21. Be4 {[%mdl 64] [#] Pin} Bc6 22. g3 {[%cal Re4d5]} (22.
Bxd5 {looks sharper.} Bxd5 23. Qc3 Re2 24. g3 g6 25. cxd5 Re7 26. Qc4) 22... g6
23. Bxd5 Bxd5 24. Qxd5 Qxd5 25. Rxd5 Rxa2 26. Rxc5 $11 {[%mdl 4096] Endgame
KR-KR} a5 27. Rc7 Rc2 28. Ra7 Rxc4 29. Rxa5 Kg7 30. h4 h5 31. Kg2 Kg8 32. Kg1
Kg7 33. Kg2 Kg8 34. Kg1 Kg7 {Not much happened in this game.  Weighted Error
Value: White=0.02/Black=0.03} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.19"]
[Round "3.5"]
[White "Caruana, Fabiano"]
[Black "Swiercz, Dariusz"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2806"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,93,25,25,28,32,23,22,24,27,28,26,19,28,26,20,22,25,33,50,21,54,31,27,
21,22,18,12,19,37,35,47,25,51,23,22,23,30,23,92,85,96,90,96,86,97,93,135,134,
195,149,164,176,215,131,120,106,218,122,333,339,748,717,665,414,468,462,594,
587,1957,1727,1528,1447,5002,4990,4424,3290,29982,29983,29981,29982,29992,
29993,29996,29991]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5. d4 cxd4 6.
Nxd4 Qb6 {6...Ng6 gains popularity.} 7. Nxc6 {B30: Sicilian: 2...Nc6 3 Bb5,
lines without ...g6.} bxc6 8. Be2 Ng6 9. c4 {The position is equal.} Be7 10.
Nc3 O-O 11. Rb1 c5 12. Be3 Qc7 13. f4 Bb7 14. g3 {[#]} Rfe8 $146 ({Predecessor:
} 14... a6 15. h4 Rfe8 16. h5 Nf8 17. h6 gxh6 18. Bd3 Ng6 19. Qh5 Kh8 20. Rf2
Rg8 {1/2-1/2 (43) Horvat,M (2459)-Felytin,L (2459) ICCF email 2017}) 15. h4 Nf8
16. Bf3 d6 17. Qd2 a6 18. b3 Rad8 19. Qf2 Nd7 20. Rbd1 Bf6 21. Ne2 Nb6 22. g4
d5 23. g5 Be7 24. f5 {Threatens to win with Bh5.} exf5 (24... Bd6 $11 {keeps
the balance.}) 25. Bf4 $16 (25. cxd5 $6 fxe4 26. Bxe4 Bd6 $14) 25... Bd6 26.
Bxd6 Qxd6 27. exd5 Nd7 28. Bg2 Bc8 29. Nf4 Ne5 {[#]} (29... g6 $16 30. Nd3 a5)
30. b4 $1 $18 cxb4 31. c5 Qb8 32. Rfe1 b3 {[#]} 33. axb3 $1 Qb4 (33... Qxb3 $16
34. Qe3 Qxe3+ 35. Rxe3 Kf8) 34. Re2 ({Better is} 34. Nd3 $18 Qxb3 35. Nxe5 Rxe5
36. c6 (36. Rxe5 Qxd1+ 37. Re1 Qg4 $16)) 34... Ng4 $2 {This move loses the
game for Black.} (34... Bd7 $16) 35. Qd4 Qxb3 $2 {[#]} (35... Qxd4+ 36. Rxd4
Rxe2 37. Nxe2 Ne5) 36. Nh5 $1 {[%csl Gh5][%cal Rd4g7][%mdl 512]} f6 (36... Nf6
37. Rb2) 37. Rxe8+ Rxe8 38. gxf6 {Intending f7+! and mate.} gxf6 39. d6 {
And now Bd5+ would win.} Be6 40. d7 {[%cal Rd7e8]} Rd8 41. c6 Qc2 42. Re1 Kf7
43. Nf4 Bb3 44. c7 {White mates.} Qxc7 45. Bd5+ ({Not} 45. Qb4 Qxd7 46. Qxb3+
Kg7 $14) 45... Bxd5 46. Qxd5+ {[%mdl 64] Double Attack} Kg7 47. Ne6+ {Weighted
Error Value: White=0.13/Black=0.47} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.20"]
[Round "4.1"]
[White "Swiercz, Dariusz"]
[Black "Xiong, Jeffery"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2655"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,107,19,13,33,35,17,0,5,-17,0,0,39,0,61,76,66,47,51,16,24,0,155,123,
120,125,247,122,108,136,243,242,520,371,350,283,430,448,421,441,449,419,428,
420,507,481,664,661,629,79,78,73,333,304,329,317,315,308,301,320,323,320,325,
310,324,298,329,329,323,319,322,308,321,318,301,293,408,421,324,193,210,17,15,
28,770,748,830,674,29976,2118,29982,29983,29983,29984]} 1. e4 c5 2. Nf3 d6 3.
d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bh4 Qb6 9. a3 Nbd7 {
B96: Sicilian Najdorf: 6 Bg5 e6 7 f4, lines other than 7...Qb6 and 7...Be7.} (
9... Qxb2 $2 10. Na4 $18) 10. Bf2 Qc7 (10... Qxb2 $2 11. Na4 $18) 11. Bd3 b5 {
The position is equal.} 12. Qe2 Bb7 13. O-O-O Be7 14. Kb1 {[#]} g6 $146 (14...
Nc5 $11) ({Predecessor:} 14... Nc5 15. Rhe1 O-O 16. g4 d5 17. exd5 Nxd5 18.
Nxd5 Bxd5 19. Nf5 exf5 20. Qxe7 Qxe7 21. Rxe7 Nxd3 22. Rxd3 {1/2-1/2 (35)
Alvir,A (2341)-Kiss,A (2383) Austria 2015}) 15. Rhe1 $14 Nc5 16. g4 g5 17. fxg5
hxg5 18. Bg3 O-O-O $2 (18... Nfd7 $11) 19. Rf1 $1 $16 Qb6 20. Nb3 Ncd7 (20...
Rhf8 $16) 21. Bf2 (21. a4 $1 $18) 21... Qc7 22. a4 bxa4 (22... b4 $16) 23. Nxa4
$18 Qc6 (23... Rxh2 24. Bxa6 Ne5) 24. Nc3 Rxh2 25. Na5 Qc7 (25... Qc5 {was
worth a try.}) 26. Nxb7 Kxb7 27. Bxa6+ (27. Qe3 Ra8 $14) 27... Ka8 28. Nb5 Qc6
29. Nd4 $1 {[%cal Rd4c6]} Qb6 {[#]} 30. Rd3 $1 Nc5 (30... Qxa6 31. Ra3 $18) (
30... Rb8 31. Bb5) 31. Ra3 {Black must now prevent Nc6!} Kb8 32. Nf3 $2 (32.
Nb3 $18 {is more deadly.} Rxf2 33. Rxf2 Ncxe4 34. Nd4 $1 {[%mdl 512]}) 32...
Rxf2 $16 33. Qxf2 Nfxe4 $2 {[%mdl 8192]} (33... Kc7 $16 {was called for.}) 34.
Qe3 $1 $18 {aiming for Rb3!} (34. Qd4 $2 Bf6 $19) 34... Kc7 {[#]} 35. Nd4 $1
Rb8 {[%csl Gb8][%cal Rb6b2]} (35... f5 36. Nb5+) 36. Bb5 f5 37. c4 (37. gxf5 $6
e5 $18) 37... d5 {Threatens to win with ...dxc4.} 38. gxf5 e5 39. Nc6 {[%mdl
64] Double Attack} dxc4 40. Nxb8 Qxb5 {[#]} 41. Na6+ $1 {[%mdl 512]} Nxa6 {[#]}
42. Rxa6 {[%mdl 512]} c3 {[%csl Gc3][%cal Rb5b2] [#]} 43. Ra7+ $1 ({Less
strong is} 43. Qa7+ Kc8 $16) 43... Kb8 {[%csl Gc3][%cal Rb5b2] [#]} 44. Ra8+ $3
{[%mdl 576] Decoy} Kxa8 {[%csl Gc3][%cal Rb5b2]} 45. Qxe4+ {[%mdl 4096]
Endgame KQR-KQB} Ka7 {[%csl Gc3][%cal Rb5b2]} 46. Rf2 Bc5 {[#]} 47. Qd5 $1 {
[%mdl 512]} Kb6 48. Qe6+ $2 ({White should try} 48. Rh2 $18 {Strongly
threatening Qd8+.} Qf1+ 49. Kc2 cxb2 50. Qe6+ (50. Kxb2 Bd4+ 51. Ka3 Qa1+ 52.
Kb4 Qc3+ 53. Ka4 Qc6+ 54. Qxc6+ Kxc6 $18) (50. Rh6+ Kb5 $16) 50... Kb5 51. Qb3+
(51. Kxb2 Bd4+ 52. Kc2 Kc5 $11) 51... Bb4 52. Kxb2 Qxf5 53. Qd5+ Ka4 54. Qc4)
48... Ka5 $1 $11 49. Rc2 Ba3 $2 {[%mdl 8192]} (49... Bd4 $11) 50. b3 $18 {
[%cal Bb2b3,Bb3b4][%mdl 32]} Qc5 51. f6 Bb2 {Hoping for ...Qg1+.} 52. Rxb2 (52.
b4+ $142 Qxb4 53. Qxe5+ Ka6 54. Qe6+ Ka5 55. Qe5+ Ka6 56. Qe2+ Ka5 57. Rxb2)
52... cxb2 {[#]} 53. b4+ $1 {[%mdl 64] Promotion} Kxb4 54. Qe7 {Weighted Error
Value: White=0.36/Black=0.63} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.20"]
[Round "4.2"]
[White "Caruana, Fabiano"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "A33"]
[WhiteElo "2806"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,106,0,0,0,6,0,18,0,7,20,32,0,22,24,40,16,40,0,24,15,33,11,0,0,10,4,5,
-18,16,17,0,0,7,13,52,59,84,79,86,83,75,72,77,70,77,69,75,52,52,55,50,40,61,61,
44,2,4,9,56,27,28,28,29,29,29,29,29,27,27,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0]} 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. g3 Qb6 7. Nb3
Ne5 8. e4 Bb4 9. Qe2 d6 10. Bd2 {A33: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4
4 Nxd4 e6 5 Nc3 Nc6.} O-O 11. Bg2 Bd7 12. f4 Ng6 13. Rc1 Bc6 14. a3 {[#]} (14.
Nd4 $5) 14... Bxc3 $146 ({Predecessor:} 14... Bxa3 15. Nb5 a6 16. Nxa3 Qxb3 17.
Bc3 d5 18. exd5 exd5 19. O-O dxc4 20. f5 Qb6+ {0-1 (44) Elwert,H (2681)
-Sanakoev,G (2585) email 1999}) 15. Rxc3 a5 16. Qe3 Ra6 17. c5 dxc5 18. Nxc5
Raa8 19. Nb3 Qxe3+ 20. Rxe3 Ng4 21. Rc3 $36 {[%mdl 2048] Black is under
pressure.} Rfd8 22. Rc4 Bb5 23. Rc5 Ba4 24. h3 Nf6 {[#]} 25. e5 $1 Nd5 (25...
Nd7 26. Rc3) 26. Bxd5 exd5 {[#]} 27. Nd4 b6 28. Rc7 Rac8 29. Rb7 Rb8 30. Rxb8
Rxb8 31. Kf2 Rc8 32. b4 axb4 33. Bxb4 h5 34. Ke3 Rc4 35. h4 Nf8 36. Bxf8 Kxf8
$14 {[%mdl 4096] Endgame KRB-KRN} 37. Rb1 b5 38. Kd3 g6 39. f5 gxf5 40. Rf1 b4
41. axb4 Rxb4 42. Rxf5 Bd1 43. Rf6 {And now e6 would win.} Bg4 {The position
is equal.} 44. Ke3 Rb1 45. Nf5 Rb3+ 46. Kd4 Bxf5 47. Rxf5 Rxg3 48. Rxh5 $11 {
KR-KR} (48. e6 {feels hotter.} f6 49. Rxh5 Ke7 50. Kxd5 Rd3+ 51. Ke4) 48... Kg7
49. Kxd5 Rg4 50. Rg5+ Rxg5 51. hxg5 {Intending Kd6 and mate.} Kg6 52. e6 fxe6+
53. Kxe6 Kxg5 {Weighted Error Value: White=0.08/Black=0.06} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.20"]
[Round "4.3"]
[White "Rapport, Richard"]
[Black "Svidler, Peter"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2763"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,75,13,19,16,15,16,45,43,38,29,33,33,41,12,32,10,18,8,10,0,0,0,0,-13,0,
-3,0,-22,0,0,0,-12,-8,-35,-35,-60,-20,-26,0,0,0,0,119,118,112,0,80,84,50,9,417,
377,427,353,466,303,295,257,241,160,560,722,702,664,665,658,647,634]} 1. g3 d5
2. Nf3 Nd7 3. d4 Nb6 4. a4 a5 5. Nc3 Nf6 6. Bg2 {[#] D02: 1 d4 d5 2 Nf3
sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bf5 $146 ({Predecessor:} 
6... h6 7. O-O Bf5 8. Nh4 Bh7 9. f4 e6 10. f5 Be7 11. Bh3 Qd7 12. Qd3 Qc6 {
1/2-1/2 (63) Firouzja,A (2749)-Wojtaszek,R (2705) Wijk aan Zee 2021}) 7. Nh4 e6
8. Nxf5 {White is slightly better.} exf5 9. Qd3 Qd7 10. O-O Bb4 11. Nd1 O-O 12.
f3 Rfe8 13. Nf2 Qe6 14. Bg5 Nc4 15. c3 Bf8 16. Rae1 Nxb2 17. Qc2 {[%cal Rc2b2]}
Nc4 18. e4 h6 (18... Qc6 {keeps more tension.} 19. e5 Nd7 20. Bh3 h6 21. Bc1
Ndb6) 19. Bxf6 Qxf6 20. e5 Qe6 21. f4 h5 22. h3 g6 23. g4 hxg4 24. hxg4 fxg4 {
And now ...c6 would win.} 25. Qd1 g3 (25... Be7 $11) 26. Ng4 $16 {[%mdl 1024]
White has strong compensation.} Bg7 27. Bh3 (27. Ne3 $16) 27... Qb6 (27... Qe7
$1 $11 {remains equal.}) 28. Qd3 c5 29. Rb1 Qc7 {[%mdl 8192] A mistake that
costs the game.} (29... Qd8 $1 $11 {and Black has nothing to worry.}) 30. f5
$18 Ra6 31. f6 cxd4 32. cxd4 Bf8 33. Qxg3 {Hoping for Qh4.} Nd2 {[#]} 34. Qh4
$1 Ne4 $2 ({Inferior is} 34... Nxb1 35. Nh6+ Bxh6 36. Qxh6 Rxf6 37. exf6 Qg3+
38. Kh1 Qxh3+ 39. Qxh3) (34... Nxf1 $16 35. Rxf1 Qc3) 35. Nh6+ {White is
clearly winning.} Bxh6 36. Qxh6 {[%csl Gf6][%cal Rh6g7]} Nxf6 37. exf6 {
[%csl Gf6][%cal Rh6g7]} Qg3+ {[#]} 38. Bg2 $1 {[%csl Gf6][%cal Rh6g7] Weighted
Error Value: White=0.16/Black=0.55} ({Stronger than} 38. Kh1 Rxf6 39. Rxf6 Re2
$11) 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.20"]
[Round "4.4"]
[White "Shankland, Sam"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2709"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,86,4,30,11,14,10,31,15,30,-12,-12,-12,-12,-12,-12,-12,-14,-20,-7,-11,
-12,-34,20,0,0,-25,17,0,0,0,8,14,50,8,11,8,22,10,17,18,46,52,35,35,34,39,45,48,
62,34,34,36,85,96,95,77,166,173,169,176,203,200,202,194,173,194,202,201,201,
201,201,201,749,744,1245,1198,1110,1110,875]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4.
d3 Bc5 5. c3 d5 6. exd5 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual
lines and 4 0-0 Bc5.} Qxd5 {Hoping for ...Bxf2+!} 7. Bc4 Qd8 {[#]} 8. Bg5 $146
{White is slightly better.} ({Predecessor:} 8. O-O O-O 9. Nbd2 a5 10. Qe2 Bd6
11. a4 h6 12. Re1 Re8 13. Bb5 Bg4 14. h3 {1/2-1/2 (41) Wang,H (2737)-Jakovenko,
D (2704) Poikovsky 2019}) 8... h6 9. Bh4 (9. Bxf6 $5 Qxf6 10. Nbd2 $11) 9... g5
10. Bg3 e4 $1 {[%cal Re4f3]} 11. Qe2 Qe7 12. dxe4 Nxe4 13. Nbd2 Nxg3 14. Qxe7+
Bxe7 15. fxg3 Bf5 (15... g4 $15 16. Nh4 Ne5) 16. O-O Bg6 17. Bb5 O-O-O {
With the idea ...g4.} 18. Bxc6 {aiming for Be4.} bxc6 19. Nb3 $1 Rd5 20. Rae1
Bf6 21. Nfd4 Bxd4+ 22. Nxd4 Kb7 23. Nb3 Kb6 24. c4 Rd7 25. a4 {Black must now
prevent a5+.} a5 26. Rf6 {And now c5+ would win.} Ra8 27. Re5 $36 {[%mdl 2048]
Strongly threatening Rb5+. White is pushing.} Rd1+ 28. Kf2 Ra6 $1 29. Rb5+ Ka7
30. Rxa5 Rxa5 31. Nxa5 $14 {[%mdl 4096] Endgame KRB-KRN} Rd2+ 32. Kf3 Rxb2 (
32... c5 $16 {is a better defense.}) 33. Nxc6+ $18 Ka8 34. Ne5 $1 Bc2 35. Nxf7
({Don't do} 35. Rxf7 $6 Bd1+ 36. Ke3 Rxg2 $16) 35... h5 36. Nxg5 Bd1+ 37. Ke3
Re2+ 38. Kd4 Rxg2 39. a5 {[%cal Ba4a5,Ba5a6][%mdl 32] Threatens to win with
Ne6.} Rxh2 40. Ne6 $1 {[%cal Re6c7]} h4 $2 (40... Rd2+ 41. Kc5 Rd7) 41. Nxc7+ {
White is clearly winning.} Kb8 {[#]} 42. Nb5 $1 ({Less strong is} 42. Na6+ Ka7
$18) 42... hxg3 {[#]} 43. a6 $1 {[%cal Rf6f8]} Rh8 {Weighted Error Value:
White=0.08/Black=0.16} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.20"]
[Round "4.5"]
[White "Dominguez Perez, Leinier"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2758"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,65,24,19,24,20,33,31,4,10,10,10,10,7,12,16,10,12,14,22,10,5,7,9,4,76,
72,73,72,158,154,145,157,186,179,180,179,901,881,833,870,842,842,29995,29996]} 
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3
Be7 9. Qd2 O-O 10. O-O-O Nbd7 11. g4 b5 12. g5 Nh5 {outshines the older 12...
b4.} 13. Kb1 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6
Be3 e5.} Nb6 14. Na5 Rc8 15. Nd5 {White is slightly better.} Nxd5 16. exd5 Bxd5
17. Qxd5 Qxa5 18. c4 Nf4 19. Bxf4 exf4 20. h4 Qa4 {[#]} 21. Bd3 $1 $146 {
[%mdl 8] h5 is the strong threat. An important novelty.} ({Predecessor:} 21. b3
Qb4 22. Bd3 bxc4 23. Qe4 g6 24. Bxc4 Qc3 25. Rc1 {1/2-1/2 (47) Kryvoruchko,Y 
(2693)-Van Wely,L (2674) Monzon 2016}) 21... bxc4 {[#]} 22. Qe4 {[%csl Gd3]
[%cal Re4h7]} g6 23. Bc2 Qd7 (23... Qe8 $1 $11 {remains equal.}) 24. h5 $1 $16
{[%cal Rh5g6]} Qe6 {[#]} ({Not} 24... Bxg5 $2 25. hxg6 Rce8 26. Qd4 $18 (26.
gxh7+ Kh8 $16)) 25. hxg6 $1 hxg6 (25... Qxe4 $142 26. gxf7+ Kxf7 27. Bxe4 Rh8)
26. Qxf4 {Intending Qh4 and mate.} ({Inferior is} 26. Qd4 Qe5 $17) 26... Qe5
27. Qh4 {[%csl Gh1][%cal Rh4h7][%mdl 1024] White has strong compensation.} Qg7
28. Rd2 $40 {[%cal Bd1d2,Bd2h2,Bh2h6][%mdl 160] And now Rdh2 would win. White
attacks with force.} Rc5 {[#]} 29. f4 {Strongly threatening Rdh2.} f6 $2 (29...
Rb8 30. b3 cxb3 31. Bxb3 Ra5) 30. Rdh2 fxg5 31. Qe1 {White threatens Qe6+ and
mate.} Bf6 32. Rh6 Qb7 33. Qe6+ {[%mdl 64] Double Attack.  Weighted Error
Value: White=0.02/Black=0.63} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.21"]
[Round "5.1"]
[White "Svidler, Peter"]
[Black "Shankland, Sam"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2714"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,47,0,9,0,4,8,4,6,10,0,11,0,0,0,0,0,0,-10,0,0,0,-18,0,-25,-21,-18,-22,
-10,0,0,0,-2,0,0,0,-13]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6.
Bd3 e5 7. Nde2 Be6 8. O-O {B90: Sicilian Najdorf: Unusual White 6th moves, 6
Be3 Ng4 and 6 Be3 e5.} Nc6 9. f4 exf4 10. Nxf4 Ne5 {[#]} 11. a4 $146 ({
Predecessor:} 11. Kh1 Be7 12. Be3 O-O 13. a4 Qc7 14. Bd4 Rae8 15. Qe1 Qc8 16.
Qg3 Nc6 17. Bg1 {1/2-1/2 (32) Heberla,B (2566)-Gajewski,G (2616) Warsaw 2020})
11... g6 12. Be2 Bg7 13. Be3 O-O 14. a5 Rc8 15. Ra4 Re8 16. h3 Qe7 17. Bd4 h5
18. Qe1 Bd7 {[#] Threatens to win with ...Rxc3.} 19. Nfd5 {The position is
equal.} Nxd5 20. Nxd5 Qe6 21. Nf4 Qe7 22. Nd5 Qe6 23. Nf4 Qe7 24. Nd5 {Not
much happened in this game.  Weighted Error Value: White=0.04/Black=0.04}
1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.21"]
[Round "5.2"]
[White "Vachier-Lagrave, Maxime"]
[Black "Swiercz, Dariusz"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2751"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,93,21,22,4,2,0,7,-32,32,30,38,52,75,11,16,4,12,6,20,20,15,0,0,0,29,
25,21,28,57,64,64,62,65,62,65,65,65,65,65,65,94,91,141,141,162,168,326,326,322,
304,351,368,357,245,245,245,245,245,245,245,239,239,239,239,241,233,512,500,
487,430,29977,29977,29974,29975,29982,29983,29983,29980,29995,29996]} 1. e4 e5
2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. O-O d5 7. exd5 Nxd5 8. Re1 Bg4 9.
Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Nb6 10. h3
Bh5 11. Bb3 $1 {[%mdl 4] The position is equal. is currently scoring better
than 11.Bb5.} Kh8 (11... Qxd3 $15 12. Bc2 Bxf3 13. Nxf3 Qxd1 14. Bxd1 Rae8) 12.
Ne4 $14 Nd7 13. Bd5 Bb6 14. Ng3 ({White should try} 14. b4 $1 $16) 14... Bxf3
$11 15. Qxf3 f5 $1 {Threatening ...e4!} 16. d4 (16. Nxf5 $2 g6 $19) 16... f4
17. Ne4 {[#]} Qh4 $146 ({Predecessor:} 17... exd4 18. Bxc6 bxc6 19. Bxf4 dxc3
20. bxc3 Ne5 21. Qg3 Nd3 22. Rad1 Nxe1 23. Rxd8 Raxd8 {1-0 (59) Nepomniachtchi,
I (2784)-Aronian,L (2781) chess24.com INT 2020}) 18. Nd2 exd4 19. Nc4 Rad8 20.
Bxc6 bxc6 21. Bd2 Nf6 22. Nxb6 (22. Bxf4 dxc3 23. Qg3 (23. bxc3 $2 Nh5 $19)
23... Qxg3 $17) (22. Qxf4 Qxf4 23. Bxf4 dxc3 $15) 22... cxb6 23. cxd4 c5 24.
Re7 Rxd4 25. Bc3 Nd5 26. Rxa7 Nxc3 27. bxc3 Rdd8 {White now steadily converts
the win.} 28. Re1 c4 29. Re4 b5 30. a4 $40 {[%mdl 128] Black is in trouble.}
Rd3 $2 {[#]} (30... bxa4 31. Rxc4 a3 32. Rxa3 Qe7) 31. Qxf4 $3 $18 {[%mdl 512]}
Qxf4 ({Of course not} 31... Rd1+ 32. Kh2 $18) 32. Rxf4 {[%cal Rf4f8][%mdl 4096]
Endgame KRR-KRR} Rg8 33. axb5 {Hoping for b6.} Rxc3 34. Rc7 Rb3 {[#]} 35. Rc5
$1 ({Don't do} 35. Rcxc4 $6 Rb1+ 36. Kh2 Rxb5) ({Don't play} 35. Rfxc4 $6 Rxb5
36. f3 Rbb8) 35... c3 36. Rfc4 h6 37. Rxc3 Rb1+ 38. Kh2 Kh7 39. Rg3 Rb2 40. f4
g6 $2 (40... Kh8 41. h4 Rb4) 41. f5 g5 42. Rd3 Re8 (42... Rg7 $18 43. Rd6 Rb7)
43. Rd7+ {White mates.} Kg8 44. Rc6 Rxb5 45. Rg6+ Kf8 46. Rxh6 {[%cal Rh6h8]}
Kg8 47. f6 {Weighted Error Value: White=0.09/Black=0.38} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.21"]
[Round "5.3"]
[White "Mamedyarov, Shakhriyar"]
[Black "Dominguez Perez, Leinier"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2782"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,78,31,24,12,17,9,7,0,6,5,5,0,0,0,0,0,0,0,0,0,0,-12,-14,-22,-23,-16,0,
0,0,-45,-39,-46,-8,-3,0,-20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. O-O c5
7. Re1 {7.e4 is the recent fashion. D27: Queen's Gambit Accepted: Classical
main line: 7 e4!? and 7 a4.} Nc6 8. Bd3 cxd4 9. exd4 Be7 10. Nc3 O-O 11. Ne5
Nxd4 {[#]} 12. Bf4 $146 ({Predecessor:} 12. Bg5 Nc6 13. Qf3 Qc7 14. Bf4 Bd6 15.
Qg3 Nh5 16. Qh4 g6 17. Nxc6 Nxf4 {0-1 (38) Riehle,M (2347)-Bluebaum,M (2670)
Chess.com INT 2021}) 12... Nf5 13. Qc2 Nd4 14. Qd1 Nf5 {[%cal Bd4f5,Bf5h4,
Bh4g6][%mdl 32]} 15. Qf3 Nh4 16. Qh3 Nd5 17. Bg3 {[#] And now Bxh4 would win.}
Ng6 18. Rad1 Bf6 19. Bb1 Qb6 20. Qh5 Nxc3 21. bxc3 Bxe5 22. Bxe5 {The position
is equal.} Rd8 23. h4 (23. Bd4 {looks sharper.} Qb5 24. Qxb5 axb5 25. Bb6 Rd7
26. Bd3) 23... Rxd1 24. Rxd1 {[#] Threatens to win with Bxg6.} Bd7 $1 25. Bxg7
Kxg7 26. Bxg6 hxg6 27. Qe5+ Kg8 {White must now prevent ...Bc6.} 28. Rxd7 $11 {
[%mdl 4096] Endgame KQR-KQR} Rd8 29. Re7 Qb1+ ({Much worse is} 29... Rd1+ $6
30. Kh2 $16) 30. Kh2 Qf5 31. Qxf5 exf5 32. Rxb7 {KR-KR} Rd2 33. f3 Rxa2 34. Ra7
Rc2 35. Rxa6 Rxc3 36. Ra8+ Kg7 37. Ra6 Kg8 38. Ra8+ Kg7 39. Ra6 Kg8 {Weighted
Error Value: White=0.04/Black=0.02} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.21"]
[Round "5.4"]
[White "Xiong, Jeffery"]
[Black "Caruana, Fabiano"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2710"]
[BlackElo "2806"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,72,20,10,33,21,24,21,42,-11,-8,-34,-11,-46,-33,-31,-20,-32,-12,-41,
-40,-33,0,0,-11,-43,-23,-48,-21,-1,-7,-16,-16,-63,0,0,83,72,136,112,126,119,
133,89,129,125,135,27,123,27,22,32,50,26,50,47,47,47,555,555,540,530,635]} 1.
Nf3 d5 2. g3 c5 3. Bg2 e6 4. O-O Nf6 5. d4 cxd4 6. Nxd4 e5 7. Nb3 a5 {D02: 1
d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} 8. Bg5 a4 9.
Nc1 Be6 {[#] The position is equal.} 10. e4 $146 (10. c4 $14) ({Predecessor:} 
10. c4 dxc4 11. Bxb7 Qxd1 12. Rxd1 Ra7 13. Bg2 Bc5 14. Nc3 O-O 15. Bxf6 gxf6
16. e3 {1/2-1/2 (55) Bobarykin,D (2248)-Khantuev,A (2351) Irkutsk 2010}) 10...
d4 $11 11. f4 Be7 12. Nd3 Nc6 13. Bf3 Nd7 (13... Rc8 {keeps more tension.} 14.
Nd2 O-O 15. b3 Ra8 16. Nc4 Nd7) 14. Bxe7 Qxe7 15. Nd2 b5 16. b3 {Hoping for f5.
} f6 17. Bh5+ g6 18. f5 Bf7 19. fxg6 hxg6 20. Bg4 Be6 21. Bxe6 Qxe6 22. Nf3 g5
(22... Rc8 $15) 23. Qe2 Nd8 (23... Rc8 $11 {keeps the balance.}) 24. Nb4 $1 $16
Rb8 (24... Nb7 $142) 25. Nd5 {And now Nc7+ would win.} O-O 26. h4 Nf7 27. hxg5
fxg5 {[#]} 28. Rf2 $1 Nb6 {[#]} 29. Qxb5 ({White should play} 29. Nd2 $1 $16)
29... Nxd5 (29... g4 $1 $11 30. Nh2 Nxd5 31. Qxd5 (31. exd5 Rxb5 32. dxe6 Ng5
$11) 31... Qxd5 32. exd5 Ng5 33. Rxf8+ Kxf8) 30. Qxd5 ({Better is} 30. exd5 $16
Qg4 31. Qc6) 30... Qxd5 31. exd5 axb3 32. axb3 d3 33. cxd3 {Ra6 is the strong
threat.} Rxb3 34. Ra6 {Threatens to win with Rg6+.} Rd8 $2 {[%mdl 8192]} (34...
Rxd3 $14 35. Rg6+ Kh7) 35. Rg6+ $18 Kh7 36. Rf6 Rxd3 {Weighted Error Value:
White=0.18/Black=0.52} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.21"]
[Round "5.5"]
[White "So, Wesley"]
[Black "Rapport, Richard"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2772"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,33,19,22,31,20,20,25,25,12,20,8,15,2,2,5,10,7,4,0,0,0,0,0]} 1. e4 e5
2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nf5 {C67: Ruy
Lopez: Berlin Defence: 4 0-0 Nxe4.} 8. c3 Nxe5 9. Rxe5 d6 {White has an edge.}
10. Re1 O-O {The position is equal.} 11. d4 d5 12. Bf4 Bd6 13. Qf3 {[#]} Nh4 $5
$146 {[%mdl 8] New and interesting.} ({Predecessor:} 13... Bxf4 14. Qxf4 Qd6
15. Qxd6 Nxd6 16. Bd3 c6 17. Nd2 Bf5 18. Bxf5 Nxf5 19. Re5 Nd6 20. Rae1 Rfe8
21. Rxe8+ Rxe8 22. Rxe8+ Nxe8 23. Nb3 Nd6 {1/2-1/2 (30) Kuzubov,Y (2660)
-Inarkiev,E (2684) Ankara 2018}) 14. Qe3 Nf5 15. Qf3 Nh4 16. Qg3 Nf5 17. Qf3 {
An uneventful encounter.  Weighted Error Value: White=0.03/Black=0.02} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.23"]
[Round "6.1"]
[White "Caruana, Fabiano"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2806"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,91,16,35,19,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-17,
-18,-18,-18,-13,-30,-29,-19,-30,-20,-20,0,0,0,0,0,0,0,0,0,0,0,0,84,0,18,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6
6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O Nbd7 11. g4 b5 12. g5 Nh5
$1 {[%mdl 4] is currently scoring better than 12...b4.} 13. Kb1 {B90: Sicilian
Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Nb6 14. Na5 Rc8 15.
a3 g6 16. h4 Ng3 17. Rg1 Nxf1 18. Rgxf1 Na4 $1 {[%cal Ra4c3]} 19. Nxa4 bxa4 20.
h5 $1 Qc7 21. Rh1 Rfe8 22. Qh2 $1 {[#] hxg6 is the strong threat.} Bf8 $1 ({
Weaker is} 22... Qxa5 23. hxg6 Bd8 24. gxf7+ Kxf7 25. g6+ Kf6 26. Qh4+ Kg7 27.
Qh6+ Kg8 28. Qxh7+ Kf8 29. Bh6#) 23. c4 Re7 $1 24. Bd2 Bxc4 25. Bb4 Rd7 {[#]}
26. f4 $146 ({Predecessor:} 26. Nxc4 Qxc4 27. hxg6 fxg6 28. Qh3 Qf7 29. Rd5 Rc4
30. Rhd1 Rcc7 31. Bxd6 Bxd6 32. Rxd6 Rxd6 33. Rxd6 Rc1+ 34. Kxc1 Qc7+ 35. Kb1
Qxd6 36. Qc8+ Kg7 37. Qb7+ {1/2-1/2 (37) Szijarto,A (2294)-Voiculescu,C (2458)
ICCF email 2017}) 26... Bb5 27. hxg6 $1 fxg6 28. f5 Rg7 29. f6 Rf7 30. Qd2 Qd7
31. Qd5 Be2 32. Rc1 Rxc1+ 33. Rxc1 h5 34. Nc4 Bxc4 35. Rxc4 h4 36. Rc2 h3 37.
Ka2 Kh8 {[#]} (37... Qb7 $11) 38. Rd2 (38. Rh2 $1 $16 {[%cal Rh2h3]}) 38... Rh7
$11 {And now ...h2 would win.The position is equal.} 39. Bxd6 Qxd6 40. Qxd6
Bxd6 41. Rxd6 {[%cal Rd6d8] KR-KR} Kg8 $1 {White must now prevent ...Rh5.} 42.
Rd8+ Kf7 {aiming for ...Rh5.} 43. Rd7+ Kg8 44. Rd8+ Kf7 {Hoping for ...Rh5.}
45. Rd7+ Kg8 46. Rd8+ {Weighted Error Value: White=0.07/Black=0.06} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.23"]
[Round "6.2"]
[White "Dominguez Perez, Leinier"]
[Black "Svidler, Peter"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2758"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,70,2,26,37,37,17,20,0,0,0,0,0,0,0,0,19,6,1,0,0,0,-5,32,31,64,41,36,
28,39,0,0,-63,8,0,0,0,0,-14,0,0,0,-2,0,0,0,0,0,0,0,-12,-26,-16,0,-11,0,-19,0,
-6,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Bg5 (6. O-O h6 7.
b4 Bb6 8. Nbd2 O-O 9. Re1 Ne7 10. Bb3 Ng6 11. a4 c6 12. a5 Bc7 13. d4 Re8 14.
dxe5 Nxe5 15. Nxe5 Rxe5 16. Bb2 Re8 17. c4 Be6 18. h3 d5 19. cxd5 cxd5 20. e5
Ne4 21. Nxe4 dxe4 22. Bxe6 Rxe6 23. Rxe4 {0-1 (57) Dominguez Perez,L (2758)
-Svidler,P (2714) Saint Louis 2021}) 6... h6 7. Bh4 Qe7 8. O-O {C54: Giuoco
Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} a6 9. b4 Ba7 10. Nbd2 g5 11.
Bg3 Nh7 12. a4 $1 h5 {White must now prevent ...h4.} 13. h4 g4 14. Ne1 Nf8 15.
Nc2 Ng6 16. Ne3 Be6 {[#]} 17. b5 $146 ({Predecessor:} 17. Qb3 Nd8 18. d4 c6 19.
Nf5 Bxf5 20. exf5 d5 21. fxg6 dxc4 22. Nxc4 {1-0 (22) Gabrielian,A (2506)
-Parfenov,V (2247) Voronezh 2018}) 17... Nd8 18. d4 Nxh4 19. dxe5 dxe5 20. Bxe5
O-O 21. Bxe6 (21. bxa6 {is more complex.} bxa6 22. Bd4 Bxc4 23. Ndxc4 Qg5 24.
Re1) 21... fxe6 22. Bd4 (22. Nxg4 $11 Qg5 23. Bf6 $1 Rxf6 24. Nxf6+ {[%mdl 64]
Discovered Attack} Qxf6 25. Qxh5) 22... c5 (22... Ng6 $1 $15) 23. bxc6 Nxc6 24.
Bxa7 Rxa7 25. Ndc4 Rd8 26. Qb3 Raa8 27. Rfd1 Kh8 28. Rab1 Rxd1+ 29. Qxd1 Rd8
30. Qb3 Ng6 31. Rb2 ({Reject} 31. Qxb7 {[#]} Rb8 $1 $17) 31... Rd7 32. Nb6 Rd8
{The position is equal.} 33. Nbc4 Rd7 34. Nb6 Rd8 35. Nbc4 Rd7 {Weighted Error
Value: White=0.10/Black=0.11} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.23"]
[Round "6.3"]
[White "Xiong, Jeffery"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2710"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,111,11,1,9,22,16,14,16,18,14,33,15,32,28,32,11,37,27,41,57,47,23,51,
44,33,31,29,37,28,29,34,27,36,37,39,37,37,32,30,32,35,36,39,41,46,42,41,12,18,
11,41,11,11,8,12,8,7,0,12,9,12,0,0,0,0,0,0,0,4,0,4,0,0,0,0,0,0,-3,4,0,8,0,0,0,
12,14,26,12,15,10,14,10,34,5,5,4,5,0,5,0,8,0,5,0]} 1. d4 Nf6 2. Nf3 d5 3. Bf4
e6 4. e3 Bd6 5. Nbd2 O-O 6. Bd3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...
Nf6 3 g3 and 2...Nf6 3 Bf4.} c5 7. dxc5 Bxc5 8. O-O Nbd7 9. c4 {[#]} b6 $146 ({
Predecessor:} 9... Nb6 10. Rc1 dxc4 11. Nxc4 Nbd5 12. Bg3 b6 13. a3 a5 14. Qc2
Ne7 15. Rfd1 Bd7 16. Nfe5 Ra7 17. Bh4 h6 18. Qd2 g5 19. Bg3 a4 20. Qe2 Qc8 21.
Nxb6 {1-0 (21) Pert,R (2416)-Fischer,D (2324) London 2018}) 10. Rc1 Bb7 11. Qe2
Rc8 12. Rfd1 Qe7 {[#] And now ...e5 would win.} 13. cxd5 e5 14. Bg5 Bxd5 15.
Ba6 Rcd8 16. Nc4 Bc6 17. a3 h6 18. Bh4 Ba4 19. Re1 e4 20. Nd4 Bxd4 21. exd4 Nb8
{[#] Hoping for ...g5.} 22. Ne3 {Black must now prevent Bc4.} Nxa6 23. Qxa6 Qd7
{Threatens to win with ...Bb5.} ({Don't blunder} 23... Rxd4 $2 24. Nf5 $18) 24.
Qc4 Rc8 25. Qb4 Nh5 26. Bg3 Bc6 27. d5 Bb7 ({Wrong is} 27... Bxd5 $2 28. Rcd1
$18) 28. Qxe4 Nf6 29. Qd3 Nxd5 30. Rxc8 Rxc8 31. Nf5 Re8 32. Rxe8+ Qxe8 33. h3
Qd7 34. Bb8 Bc6 35. Bg3 (35. Qe4 {looks sharper.} Kh8 36. Qg4 f6 37. Qg6 Nc7
38. f3) 35... Nf6 36. Qxd7 (36. Qc2 {keeps more tension.} Ne4 37. Qxc6 Qxf5 38.
Qc7 Nxg3 39. fxg3 Qb1+ 40. Kh2) 36... Bxd7 $11 {[%mdl 4096] Endgame KBN-KBN}
37. Nd4 Nd5 38. Kf1 Ne7 39. Bb8 a6 40. Bc7 b5 41. Ke2 f6 42. Kd3 Kf7 43. Ke4 g6
44. f3 Nf5 45. Nxf5 Bxf5+ {KB-KB} 46. Kd4 b4 47. axb4 h5 48. g4 Bd7 49. Ke3
hxg4 50. hxg4 f5 51. gxf5 Bxf5 {The position is equal.} 52. Kd4 Bd7 53. Ke3 Bf5
54. Kd4 Be6 55. Ke3 Bf5 56. Kd4 {Weighted Error Value: White=0.05/Black=0.05}
1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.23"]
[Round "6.4"]
[White "Shankland, Sam"]
[Black "Rapport, Richard"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2709"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,92,43,24,26,12,10,14,16,-11,0,0,0,-22,-18,-25,-9,-17,-16,-22,-12,-18,
-7,-7,-14,-27,-25,-45,-21,-29,-19,-19,-21,-36,-18,-66,-1,-9,-13,-16,-20,-19,0,
-92,-99,-99,-32,-96,-39,-39,-28,-33,-26,-35,-35,-37,0,0,0,0,0,-6,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3 Bb6
6. Qe2 Qf6 7. Nc3 Nge7 8. h4 d6 {C45: Scotch Game.} 9. Bg5 Qe6 10. O-O-O {[#]}
Bd7 $146 ({Predecessor:} 10... f6 11. Be3 Bd7 12. g3 Qf7 13. Nd5 h5 14. Bxb6
Nxd5 15. exd5+ Ne5 16. Bxc7 Rc8 17. Bxd6 {1-0 (60) Acevedo Mendez,L (1845)
-Levacic,M (1951) Tornelo INT 2020}) 11. Qd2 O-O-O 12. f3 h6 13. Be3 (13. Bf4 {
is more complex.} f5 14. exf5 Qxf5 15. Na4 Bf2 16. Nc3) 13... Bxe3 14. Qxe3 Kb8
15. Bb5 f5 16. Qd2 fxe4 17. Rhe1 Qg6 {Black wants to play ...exf3.} 18. Rxe4 a6
19. Bf1 Rhe8 20. Rde1 Nf5 21. Bd3 {Rxe8 is the strong threat.} Rxe4 22. Bxe4 {
Black must now prevent g4.} Qg3 23. h5 Re8 (23... Nfe7 {keeps more tension.}
24. Rh1 Be6 25. Kb1 Rf8 26. a3 Qe5) 24. Nd5 Qg5 (24... Nfe7 $15 25. Ne3 Qg5)
25. Qxg5 $11 hxg5 26. Kd2 {Threatens to win with Bxf5.} Ng3 27. Bg6 Rh8 28. f4
(28. Ne7 $11 {keeps the balance.}) 28... gxf4 $17 29. Nxf4 {[#]} Ne5 ({Black
should play} 29... Rf8 $1 $17 {[%cal Rf8f4]} 30. Nd3 Kc8) 30. Nc1 (30. Nc5 $15)
30... Bc6 (30... Nxg6 $17 31. hxg6 Rh4) 31. Ncd3 $15 {[#]} Nxh5 $1 32. Bxh5
Nxd3 33. Kxd3 {Strongly threatening g4.} g5 34. Bf3 gxf4 (34... Bxf3 {seems
wilder.} 35. gxf3 gxf4 36. Re4 Rf8 37. a4 Kc8) 35. Bxc6 {The position is equal.
} bxc6 {[%mdl 4096] Endgame KR-KR} 36. Re2 d5 37. Rf2 Rg8 38. Kd4 Rg5 39. Kc5
Kb7 40. Rxf4 Rxg2 41. Rb4+ Kc8 42. Kxc6 Rxc2+ 43. Kxd5 Rd2+ 44. Kc6 Rc2+ 45.
Kd5 Rd2+ 46. Kc6 Rc2+ {Weighted Error Value: White=0.13/Black=0.10} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.23"]
[Round "6.5"]
[White "Swiercz, Dariusz"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2655"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,83,14,22,22,21,18,14,18,36,37,32,33,48,52,29,36,30,30,32,36,64,49,43,
58,64,20,20,20,16,21,21,4,4,4,4,0,0,0,0,0,0,0,0,0,0,0,0,-5,-5,-3,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1
Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. Nc3 {C67: Ruy Lopez: Berlin Defence:
4 0-0 Nxe4.} Ne8 10. Nd5 Bd6 11. Re1 Nf6 12. Nxf6+ Qxf6 13. d4 b6 {[#]} 14. Qg4
$146 ({Predecessor:} 14. Bd3 g6 15. Be4 Rb8 16. Qd3 Bb7 17. Bxb7 Rxb7 18. Bh6
Rfb8 19. Qh3 c6 20. Re4 {1-0 (41) Iordachescu,V (2644)-Aleksandrov,A (2604)
Nakhchivan 2012}) 14... Bb7 15. Bd3 h6 16. Bd2 c5 17. Bc3 {[#] Strongly
threatening dxc5.} Qf4 18. Qxf4 Bxf4 19. dxc5 bxc5 20. Be5 (20. g3 {feels
hotter.} Bg5 21. Bb5 d5 22. Be5 a6 23. Ba4) 20... Bxe5 {The position is equal.}
21. Rxe5 d6 22. Re7 Bd5 23. Rd1 Bxa2 24. b3 {[#] Black must now prevent Ra1.}
d5 $1 25. Bb5 {And now Bc6 would win.} c4 26. Ba4 {Ra1 is the strong threat.} (
{Of course not} 26. Rxd5 cxb3 27. cxb3 Bxb3 $17) 26... Rab8 {[%cal Rc4b3]} 27.
Rxa7 Rfd8 {[%cal Rc4b3]} 28. bxc4 Bxc4 29. h3 Rb2 30. Rc7 {Threatens to win
with Rxc4!} Rdb8 31. Bb3 Bxb3 32. cxb3 R2xb3 33. Rxd5 $11 {[%mdl 4096] Endgame
KRR-KRR} R3b7 34. Rdd7 Rxc7 35. Rxc7 {KR-KR} g5 36. g4 Kg7 37. Kg2 Kg6 38. Rc6+
Kg7 39. Rc7 Kg6 40. Rc6+ Kg7 41. Rc7 Kg6 42. Rc6+ {Weighted Error Value:
White=0.03/Black=0.02} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.24"]
[Round "7.1"]
[White "Rapport, Richard"]
[Black "Dominguez Perez, Leinier"]
[Result "1/2-1/2"]
[ECO "D23"]
[WhiteElo "2763"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,89,8,46,37,29,31,52,12,15,-3,0,0,0,0,0,0,0,0,0,1,11,12,21,0,0,0,20,10,
2,0,0,0,11,8,12,0,0,0,0,0,0,-9,-9,-8,-6,-6,-6,-6,-6,-6,-6,-10,0,0,2,-27,-27,
-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,-27,0,
-27,0,-27,0,-27]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Qa4+ Nc6 5. Qxc4 e5 6. Nxe5
{D23: Queen's Gambit Accepted: 3 Nf3 Nf6 sidelines.} Nxe5 7. dxe5 Ng4 8. Bf4 {
White is slightly better.} c6 {[#] Threatens to win with ...Qb6.} 9. e3 {[#]}
g5 $146 ({Predecessor:} 9... Qa5+ 10. Nc3 Nxe5 11. Qd4 f6 12. a3 Qc5 13. b4
Qxd4 14. exd4 Ng6 15. Be3 Be6 {1/2-1/2 (33) Laczay,I-De Paus,P LSS email 2007})
10. Bg3 Qa5+ 11. Nd2 Be6 12. Qc2 O-O-O {[#] And now ...Rxd2! would win.} 13.
O-O-O {Strongly threatening Bc4.} Bb4 14. a3 Bxd2+ 15. Rxd2 Bb3 16. Qf5+ Be6
17. Qc2 Bb3 18. Qc3 Qxc3+ 19. bxc3 Rxd2 20. Kxd2 {Black must now prevent Bd3.}
Rd8+ 21. Ke2 $1 Rd5 22. h4 {e4 is the strong threat.} Bc4+ 23. Kf3 Nxe5+ 24.
Bxe5 Bxf1 $11 {[%mdl 4096] Endgame KRB-KRB} 25. Bd4 Rf5+ 26. Kg3 gxh4+ 27. Rxh4
Rg5+ 28. Rg4 Rxg4+ 29. Kxg4 Bxg2 30. Bxa7 {KB-KB} b5 31. Kg5 Kd7 32. Kh6 Be4
33. f3 Bxf3 34. Kxh7 Ke6 35. Kg7 f5 36. Kf8 Kd5 37. Ke7 Kc4 38. Kd6 Kxc3 39.
Bb6 Kb3 40. Bc5 Be4 41. Ke5 Kc4 42. Kd6 Kb3 43. Ke5 Kc4 44. Kd6 Kb3 45. Ke5 {
Weighted Error Value: White=0.04/Black=0.04} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.24"]
[Round "7.2"]
[White "So, Wesley"]
[Black "Shankland, Sam"]
[Result "1/2-1/2"]
[ECO "A20"]
[WhiteElo "2772"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,68,16,19,4,19,18,10,18,11,17,1,2,17,11,14,12,18,2,0,12,13,22,45,26,40,
29,52,41,58,67,69,45,59,30,92,86,82,54,64,55,45,31,42,22,50,19,20,27,45,52,47,
40,41,22,27,0,39,0,22,0,18]} 1. c4 e5 2. g3 c6 3. Nf3 e4 4. Nd4 d5 5. cxd5 Qxd5
6. Nc2 {A20: English Opening: 1...e5.} Nf6 7. Nc3 Qe5 $1 {7...Qe5 is better
than 7...Qh5.} 8. Bg2 Na6 9. O-O Be7 10. d4 exd3 $1 11. Qxd3 O-O {[#]} 12. Rd1
$146 ({Predecessor:} 12. Qe3 Bd6 13. Rd1 Re8 14. Qd4 Bc7 15. Bf4 Qh5 16. Bxc7
Nxc7 17. f3 Ne6 18. Qf2 {1/2-1/2 (79) Hammer,J (2621)-Giri,A (2785) Moscow 2017
}) 12... Qh5 13. Qe3 Re8 14. Qg5 Qxg5 15. Bxg5 Nc7 16. Bf4 Ne6 17. Bd6 Kf8 18.
e4 Rd8 19. Bxe7+ Kxe7 20. e5 Ne8 21. Ne3 a5 (21... f6 $11) 22. Rxd8 Nxd8 23.
Rd1 f6 24. exf6+ Nxf6 25. f4 Be6 26. f5 Bd7 27. g4 {Black must now prevent g5.}
Nf7 28. h4 h6 29. Kf2 Rg8 30. Kg3 Nd6 31. Re1 {[#] And now Nc4+ would win.} Kd8
32. Rd1 Ke7 33. Re1 {Strongly threatening Nc4+.} Kd8 34. Rd1 Ke7 {Weighted
Error Value: White=0.10/Black=0.07} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.24"]
[Round "7.3"]
[White "Mamedyarov, Shakhriyar"]
[Black "Caruana, Fabiano"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2782"]
[BlackElo "2806"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,76,12,16,22,0,0,0,0,0,0,0,0,-10,0,-13,0,-85,-12,0,0,0,53,-5,-7,-38,0,
0,0,0,0,0,0,0,48,0,32,33,50,34,57,22,37,0,0,-135,-179,-179,-176,-160,-144,-147,
-152,-483,-472,-475,-441,-418,-413,-593,-543,-569,-418,-411,-403,-375,-361,
-438,-434]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 d6 6. e4 b5 {[%cal
Bb7b5,Bb5b4][%mdl 32] E20: Nimzo-Indian: 4 g3 and 4 f3.} 7. Bd2 (7. Bd3 {
seems wilder.} O-O 8. Nge2 exd5 9. cxd5 a6 10. O-O) 7... Bxc3 8. Bxc3 b4 {
The position is equal.} 9. Bd2 O-O 10. Ne2 {[#]} exd5 $146 ({Predecessor:} 
10... Nh5 11. Be3 f5 12. dxe6 Bxe6 13. exf5 Rxf5 14. Qd2 Nd7 15. O-O-O Qa5 16.
Kb1 Bxc4 {0-1 (52) Caruana,F (2828)-Aronian,L (2767) Stavanger 2020}) 11. exd5
Nh5 12. Kf2 (12. Qc2 {with more complications.} Qh4+ 13. Kd1 Nd7 14. g4 Nhf6
15. Be1) 12... f5 13. Nf4 (13. a3 $11 {remains equal.}) 13... Nxf4 (13... Qh4+
$17 14. g3 Nxg3 $1 {[%mdl 512]} 15. hxg3 Qxh1) 14. Bxf4 $11 g5 15. Bc1 Nd7 ({
Better is} 15... f4 $11) 16. f4 ({White should play} 16. h4 $1 $14) 16... Nf6
17. Kg1 Ne4 18. fxg5 f4 19. Bd3 $36 {[%mdl 2048] White is pushing.} Qe7 20. Qe2
Bf5 21. Bxf4 {Threatens to win with Re1.} Qg7 {aiming for ...Rae8.} 22. Rf1 Bg6
23. h3 Rae8 24. Qc2 Qd4+ 25. Kh2 {Strongly threatening b3.} Rf7 {next ...Ref8
is good for Black.} 26. Qe2 Nf6 27. Qd1 (27. Qf2 $1 $11 Bxd3 28. gxf6 Bxf1 29.
Qg3+ Kh8 30. Rxf1) 27... Bxd3 $17 28. gxf6 Bxf1 29. Qg4+ Kh8 30. Rxf1 Rxf6 {
White must now prevent ...Ref8.} ({Don't do} 30... Qxf6 31. Qh5 $15) 31. Rf3 $2
{This costs White the game.} (31. b3 $17) 31... Rg8 $19 32. Qh4 {White hopes
to continue with Qf2.} Qxb2 {[%csl Gg8][%cal Rb2g2]} 33. Rg3 Rxg3 34. Bxg3 {[#]
} (34. Qxg3 {is a better defense.} Rg6 35. Qf3) 34... Qd4 $1 35. Qh5 Qe4 36.
Qg5 {[#]} Qg6 {[%cal Rg6g5]} 37. Qe3 Qf7 38. Qb3 Rg6 {Weighted Error Value:
White=0.37/Black=0.16} 0-1

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.24"]
[Round "7.4"]
[White "Svidler, Peter"]
[Black "Swiercz, Dariusz"]
[Result "1-0"]
[ECO "C88"]
[WhiteElo "2714"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,69,15,10,14,20,8,22,15,6,2,18,9,62,78,130,72,216,212,244,249,244,256,
265,250,362,357,363,363,366,364,383,376,549,565,495,482,495,483,501,373,358,
347,492,467,467,449]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6.
Re1 b5 7. Bb3 O-O 8. a4 Bb7 9. d3 d6 10. Nbd2 Nd7 11. c3 Nc5 12. axb5 axb5 13.
Rxa8 Qxa8 14. Bc2 {C88: Closed Ruy Lopez: Anti-Marshall Systems.} b4 15. d4
bxc3 16. bxc3 {The position is equal.} Nd7 17. Nf1 {[%cal Bd2f1,Bf1e3,Be3d5]
[%mdl 32]} Qa1 {[#]} 18. Ne3 $1 $146 {[%mdl 8] An important novelty.} ({
Predecessor:} 18. Bd2 Qxd1 19. Rxd1 Bf6 20. Be3 Ra8 21. Rb1 Bc8 22. N1d2 g6 23.
h3 Rb8 24. Rxb8 Ndxb8 {0-1 (51) Dominguez Perez,L (2763)-Abdusattorov,N (2608)
chess24.com INT 2020}) 18... Qxc3 (18... Bf6 $11) 19. Nd5 $1 $14 {[%cal Rd5c3]}
Qa1 (19... Qa5 $142) 20. Re3 ({White should play} 20. Ba4 Bf6 21. Re3 Nxd4 22.
Bxd7 Bxd5 23. exd5) 20... Qa7 (20... exd4 $2 21. Ra3 $18) (20... Qa8 $16) 21.
Ba4 $1 $18 {[%cal Ra4c6][%mdl 1024] White has strong compensation.} Bd8 {
[%cal Re5d4]} 22. Ra3 $1 {And now Bxc6 would win.} Qa6 23. Bc2 $1 Na5 24. Bd2
c6 {[#]} (24... c5 {was worth a try.} 25. dxe5 Nxe5) 25. Ne3 $1 Qb5 26. Bxa5
Bxa5 {[#]} 27. Bd3 $1 {[%cal Rd3b5]} Qb6 28. Nc4 $1 {[%csl LRa5,LRb6,LRd6,LRe5]
[%mdl 64] Double Attack} Qb4 (28... Qc7 $142 29. Nxa5 (29. Rxa5 d5 $16) 29...
exd4 30. Nxd4 Ne5) 29. Rb3 ({Wrong is} 29. Nxa5 $2 Qxa3 30. Nxb7 Rb8 $19) 29...
Qa4 30. Nb2 (30. Nxa5 Ba8 $18) 30... Qa2 31. Rxb7 Nb6 32. Qb1 Qxb1+ 33. Bxb1
exd4 (33... f6 $142 34. Ba2+ Kh8) 34. Nxd4 Bc3 35. Nxc6 {Black got outplayed
after the opening.  Weighted Error Value: White=0.08/Black=0.39} ({Weaker is} 
35. Rxb6 Bxd4 36. Rb4 (36. Rxc6 Bxb2 37. Rxd6 Rb8 $16) 36... Bc3 $18) 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.24"]
[Round "7.5"]
[White "Vachier-Lagrave, Maxime"]
[Black "Xiong, Jeffery"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2751"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,57,36,0,0,-14,-17,-27,16,18,18,14,14,10,20,16,21,4,17,-10,-10,-38,62,
55,78,83,277,279,280,278,270,264,367,300,370,361,501,497,627,644,1467,1450,
1597,1546]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6
7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 {now supersedes 9.Nc3.} Bd7 {C67: Ruy Lopez:
Berlin Defence: 4 0-0 Nxe4.} 10. Rd1 Be7 11. Nc3 Ke8 {Black has an edge.} (
11... Kc8 {keeps more tension.} 12. a4 a5 13. b3 b6 14. Ne2 c5) 12. g4 Nh4 13.
Nxh4 Bxh4 14. Bf4 {[#]} Rd8 $146 ({Predecessor:} 14... Be7 15. Kg2 Be6 16. f3
Rd8 17. b3 h6 18. Ne2 Bc5 19. Bg3 Ke7 20. Bh4+ g5 {1/2-1/2 (32) Ernst,T (2347)
-Aronsson,M (2300) Sweden 2016}) 15. Kg2 Be7 16. Be3 a5 17. f4 h5 18. f5 hxg4 (
18... g6 $1 $15 19. f6 Bb4) 19. hxg4 $14 g6 20. Rh1 $1 $36 {[%cal Rh1h8][%mdl
2048] White is really pushing.} Rf8 {[#] Loses the game.} (20... Rg8 $16) 21.
f6 $1 $18 {[%cal Rf6e7]} Bb4 {[#]} 22. Ne4 Be6 {Threatening ...Rd5.} 23. c3 Bd5
24. Kf3 Bd6 25. c4 ({Don't take} 25. exd6 Kd7 $18) 25... Bxe4+ 26. Kxe4 {
White is clearly winning.} Bb4 {Black hopes to continue with ...b6.} 27. a3 Bd2
{intending ...Bxe3.} 28. Bc5 Rg8 29. e6 {Weighted Error Value: White=0.07/
Black=0.59} 1-0

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.25"]
[Round "8.1"]
[White "Xiong, Jeffery"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "2710"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,67,13,18,8,15,28,32,15,38,0,25,19,27,27,49,34,52,0,0,0,0,0,0,0,0,0,
50,35,36,41,52,26,26,29,36,27,82,65,112,89,97,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4
e6 2. Nc3 d5 3. d4 a6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 c5 7. dxc5 Bxc5 8. Nf3 Nc6
9. Be2 {D32: Tarrasch Defence: Sidelines and lines without g3.} O-O 10. O-O Re8
11. Rc1 {White is slightly better.} h6 {[#]} 12. Qc2 $146 ({Predecessor:} 12.
a3 Ba7 13. b4 Be6 14. h3 d4 15. exd4 Nxd4 16. Nxd4 Bxd4 17. Bf3 Rc8 18. Ne2 Bb2
19. Rb1 Qxd1 20. Rfxd1 Bxa3 21. Bxb7 Rc4 22. Bxa6 Rxb4 23. Rxb4 {1/2-1/2 (23)
Kostanjsek,Z (2157)-Cvitan,O (2481) Zagreb 2017}) 12... Ba7 13. Rfd1 Be6 14.
Ne5 Rc8 15. Bf3 Qa5 16. Qd3 (16. Nxc6 $14 Rxc6 17. a3) 16... Ne7 $11 17. h3
Red8 {Black wants to play ...d4.} 18. Qe2 b5 19. a3 d4 20. exd4 Rxd4 21. Nd3
Rdd8 22. Nb4 Ng6 23. Be3 Rxd1+ 24. Rxd1 Bb8 25. Nc6 Rxc6 26. Bxc6 $16 {Hoping
for Qd2.} Qc7 {[#] ( -> ...Qh2+)} 27. f4 $1 Nxf4 28. Qd2 (28. Qf3 $16) 28...
Nd3 $1 $11 {The position is equal.} 29. Qxd3 Qh2+ $1 30. Kf2 $1 ({Don't go for
} 30. Kf1 $2 Bc4 $19) 30... Qg3+ $1 31. Kg1 $1 Qh2+ 32. Kf2 $1 (32. Kf1 $2 Bc4
$19) 32... Qg3+ $1 33. Kg1 $1 Qh2+ 34. Kf2 $1 {Weighted Error Value: White=0.
09/Black=0.09} ({Avoid the trap} 34. Kf1 $2 Bc4 $19) 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.25"]
[Round "8.2"]
[White "Caruana, Fabiano"]
[Black "Svidler, Peter"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2806"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,84,10,13,11,18,0,0,0,0,-8,12,17,8,11,10,8,8,13,32,44,57,52,54,31,65,
10,37,4,41,45,48,55,50,41,48,14,14,16,18,11,25,11,11,0,0,8,8,8,8,2,2,2,2,2,8,0,
0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4
6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 O-O 10. Be3 {C54: Giuoco Piano: 4 c3
Nf6, main lines with 5 d4 and 5 d3.} Bg4 11. Qc2 Nxc3 12. bxc3 f6 13. Bxc6 bxc6
14. exf6 Qxf6 15. Ne5 Bf5 {[#]} 16. Qa4 $146 ({Predecessor:} 16. Qd2 c5 17. O-O
cxd4 18. cxd4 h6 19. Rac1 c5 20. dxc5 Qxe5 21. cxb6 axb6 22. Bxb6 {1-0 (38)
Socko,B (2729)-Chadaev,N (2530) Chess.com INT 2016}) 16... c5 17. O-O cxd4 18.
cxd4 c5 19. dxc5 Qxe5 20. cxb6 axb6 21. Qb4 (21. Qb3 $14) 21... Be4 $11 22.
Qxb6 (22. Qb3 {seems wilder.} b5 23. Rad1 b4 24. Bc5 Rfc8 25. Bxb4 Rc4 26. Rde1
) 22... Rf6 23. Qd4 Qxd4 24. Bxd4 Rfa6 25. f3 Bc2 26. Rae1 Ra4 {[#]} 27. Rf2 $1
Bd3 28. Bc5 R8a5 29. Re8+ Kf7 {The position is equal.} 30. Re7+ Kf6 31. Rc7 (
31. Re3 {looks sharper.} Rxc5 32. Rxd3 Rc1+ 33. Rf1 Rxf1+ 34. Kxf1 Ke5 35. a3)
31... Rc4 {[#] ( -> ...Rc1+)} 32. Bd6 Ra6 33. Bg3 Rxc7 34. Bxc7 {[%mdl 4096]
Endgame KRB-KRB} Bc4 35. Rb2 h5 36. Bb6 Ke5 37. Bc5 Rxa2 38. Rxa2 Bxa2 39. Bf8
Kf6 40. Bc5 Ke5 41. Bf8 Kf6 42. Bc5 Ke5 {Weighted Error Value: White=0.08/
Black=0.03} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.25"]
[Round "8.3"]
[White "Swiercz, Dariusz"]
[Black "Rapport, Richard"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2655"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,99,8,22,21,27,2,29,12,8,8,22,21,22,0,14,8,7,8,36,37,38,36,47,46,50,26,
66,60,69,48,56,53,63,68,67,58,48,41,59,53,50,48,45,47,58,27,38,0,72,0,31,39,42,
24,23,26,55,56,47,26,19,2,12,20,27,25,22,6,6,6,6,6,17,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. e3 e6 5. Bd3 Bg6 6. c4 {
D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bd6 {
[#]} 7. Bg5 $146 ({Predecessor:} 7. c5 Bxf4 8. exf4 b6 9. O-O Bxd3 10. Qxd3
bxc5 11. dxc5 Ne4 12. b4 a5 13. Nc3 Nc6 14. Nxe4 dxe4 15. Qxe4 Nxb4 {1-0 (37)
Galperin,P (2320)-Abdilkhair,A (2235) Minsk 2018}) 7... c6 8. Nc3 {White has
an edge.} Nbd7 9. O-O Qb8 10. h3 Bh5 11. Re1 dxc4 12. Bxc4 h6 13. Bxf6 gxf6 14.
Be2 Rg8 15. Nd2 Bxe2 16. Qxe2 Rg6 17. Nc4 Bb4 18. Rac1 Nb6 19. a3 Bxc3 20. Rxc3
Qd8 21. e4 Kf8 22. Rd1 Nxc4 23. Rxc4 Qd6 24. Qf3 Rd8 25. Rc3 Kg7 26. Rcd3 Qc7
27. Qe3 Qa5 28. b4 Qh5 {[#]} (28... Qg5 $11 29. Qxg5 fxg5) 29. Qf4 (29. d5 $1
$16) 29... e5 30. dxe5 fxe5 31. Qc1 (31. Qd2 {looks sharper.} Rxd3 32. Qxd3 b6
33. Kh2 c5 34. b5) 31... Rd4 32. Rxd4 Qxh3 {[%csl Gg6][%cal Rh3g2] [#]} 33. g3
exd4 34. Rxd4 $14 {[%mdl 4096] Endgame KQR-KQR} Qe6 35. Qc3 {Hoping for Rd6+.}
Qf6 36. Qe3 h5 37. e5 Qg5 38. Qxg5 {The position is equal.} Rxg5 $11 {KR-KR}
39. Rd7 {White wants to play e6.} Rxe5 40. Rxb7 a5 41. Rc7 axb4 42. axb4 Rb5
43. Rxc6 {Black should prevent Rc4.} Rxb4 44. Kg2 h4 45. gxh4 Rxh4 46. Kg3 Rb4
47. Kg2 Rh4 48. Kg3 Rb4 49. Kg2 Rh4 50. Kg3 {Weighted Error Value: White=0.09/
Black=0.09} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.25"]
[Round "8.4"]
[White "Vachier-Lagrave, Maxime"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2751"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,99,8,32,10,21,7,16,3,5,0,0,0,0,0,8,10,5,10,18,13,19,0,0,0,0,0,12,0,
11,0,10,0,0,0,0,0,0,0,0,4,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,0,0,0,0,
0,0,0,0,0,0,0,-8,-8,-8,8,8,8,8,8,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4.
O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. Nc3 {C67: Ruy Lopez:
Berlin Defence: 4 0-0 Nxe4.} Ne8 {The position is equal.} 10. d4 Bf6 11. Re1 d5
$1 12. b3 c6 13. Ba3 Nd6 {[#]} 14. Qf3 $146 ({Predecessor:} 14. Bd3 Be6 15. Ne2
Re8 16. Nf4 Qd7 17. Nxe6 Rxe6 18. Rxe6 Qxe6 19. c3 Re8 20. Qc2 {1/2-1/2 (36)
Berzinsh,R (2390)-Mischuk,D (2355) Cheliabinsk 2019}) 14... Be6 15. Qf4 Be7 16.
Bd3 Ne8 17. Bxe7 Qxe7 18. Re5 g6 19. Rae1 Ng7 20. Ne2 Rae8 21. Ng3 Qd6 22. Qf6
Qd8 23. Qxd8 Rxd8 24. h4 Rfe8 25. h5 {[#] Black must now prevent h6.} f6 26.
R5e3 {Strongly threatening h6.} Bf7 27. hxg6 hxg6 28. Rxe8+ (28. f3 {with more
complications.} f5 29. Rxe8+ Rxe8 30. Ne2 Ne6 31. Kf2) 28... Rxe8 29. Rxe8+
Nxe8 $11 {[%mdl 4096] Endgame KBN-KBN} 30. f3 Nd6 31. Kf2 Kg7 32. Ke3 Be6 33.
Ne2 g5 34. g4 f5 35. f4 Kf6 36. fxg5+ Kxg5 37. gxf5 Bxf5 38. c4 Bxd3 39. Kxd3
dxc4+ 40. bxc4 {KN-KN} Kf5 41. Nc3 Ke6 42. a4 b6 43. a5 bxa5 44. d5+ cxd5 45.
Nxd5 Nxc4 46. Kxc4 {KN-KPP} a4 47. Nf4+ Kf5 48. Kb4 a5+ 49. Kxa4 Kxf4 50. Kxa5
{Not much happened in this game.  Weighted Error Value: White=0.03/Black=0.01}
1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.25"]
[Round "8.5"]
[White "Dominguez Perez, Leinier"]
[Black "Shankland, Sam"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2758"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,63,8,6,18,15,10,18,16,19,16,14,9,0,0,0,0,0,40,14,17,21,22,0,0,-18,
-20,-17,-27,-27,-16,-21,-17,-29,0,0,0,0,0,0,0,-61,2,-21,-20,-150,0,0,0,-143,0,
0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Be7 8.
Bc4 Nc6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3
e5.} 9. Nd5 O-O 10. Bb6 Qd7 {[#]} 11. Nxf6+ $146 (11. Nxe7+ Nxe7 12. Bd3 Qc6
$17) ({Predecessor:} 11. Nc7 Rb8 12. Ng5 Bd8 13. Nge6 Bxc7 14. Nxc7 Qe7 15. f3
Be6 16. Nd5 Bxd5 17. exd5 {0-1 (41) Zapolski,K-Kobialko,D Kolobrzeg 2001})
11... Bxf6 12. Qd3 Ne7 13. O-O-O Qc6 14. Be3 b5 15. Bb3 Bb7 (15... h6 {seems
wilder.} 16. h4 Bg4 17. Qxd6 Qxe4 18. Nd2 Qxg2 19. Rhg1 Qh3) 16. Qxd6 Qxd6 17.
Rxd6 Bxe4 18. Nd2 Bb7 ({Don't go for} 18... Bxg2 $2 19. Rg1 $16) 19. Bc5 Rac8 (
{But not} 19... Bxg2 $2 20. Rg1 $18) 20. Rd7 Bxg2 ({Don't play} 20... Rxc5 $6
21. Rxb7 Rfc8 22. Ne4 $14) 21. Rg1 Rxc5 22. Rxg2 {[#] Black must now prevent
Ne4.} Nf5 23. Bd5 {And now Ne4 would win.} Nd4 24. Ne4 Rxc2+ 25. Kb1 Bd8 26.
Bxf7+ $1 Kh8 {[#] Hoping for ...Re2!} 27. Bd5 (27. Bh5 $11 g6 28. Rxd4 {
[%mdl 64] Remove Defender} exd4 29. Kxc2 gxh5 30. Kd3) 27... Re2 ({Black
should try} 27... g6 $1 $15) 28. Rg1 Nf5 29. Be6 Nd4 (29... Rxe4 $17 30. Bxf5
Rf4) 30. Bd5 $11 Nf5 (30... Bf6 $11) 31. Be6 $17 {aiming for Bxf5.} Nd4 (31...
Rxe4 $17 32. Bxf5 Rf4) 32. Bd5 {Weighted Error Value: White=0.21/Black=0.23}
1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.26"]
[Round "9.1"]
[White "Shankland, Sam"]
[Black "Swiercz, Dariusz"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2709"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,86,16,15,10,0,0,-14,0,0,0,0,0,0,0,0,1,-10,-13,-16,0,0,9,9,10,10,22,
22,16,4,14,0,14,21,18,15,4,12,16,0,0,0,5,4,10,8,14,13,12,12,10,8,12,8,8,7,22,7,
49,49,49,49,49,41,49,49,59,10,10,10,10,10,10,0,10,0,10,0,10]} 1. Nf3 d5 2. g3
Nf6 3. Bg2 c6 4. c4 dxc4 5. O-O Nbd7 6. Qc2 Nb6 {A11: English Opening: 1...c6.}
7. a4 a5 8. Na3 Be6 9. Ng5 Qd7 10. e4 {[#]} Bg4 $146 {aiming for ...Be2.} ({
Predecessor:} 10... g6 11. Nxe6 Qxe6 12. Rb1 Bg7 13. b3 cxb3 14. Rxb3 Nfd7 15.
Bb2 Bxb2 16. Qxb2 O-O 17. Rxb6 Nxb6 18. Qxb6 {1-0 (81) Mogranzini,R (2513)
-Krejci,J (2503) Meissen 2013}) 11. Nxc4 Nxc4 12. Qxc4 e5 13. b3 Bb4 14. Bb2 h6
({But not} 14... Bxd2 $6 15. Rad1 $16) 15. Nf3 Bxf3 16. Bxf3 Qe7 17. Rad1 O-O
18. d4 exd4 19. Rxd4 Nd7 20. Be2 Rad8 21. Rfd1 Nc5 22. Qc2 (22. Kg2 {seems
wilder.} Rxd4 23. Rxd4 Qe6 24. Qxe6 Nxe6 25. Rd7) 22... Rxd4 23. Rxd4 Rd8 24.
e5 (24. Rxd8+ {is interesting.} Qxd8 25. Bc4 Qe7 26. f3 b5 27. axb5 cxb5 28.
Bxb5 Nxb3 29. Kg2) 24... Rxd4 25. Bxd4 Ne6 26. Bb2 Qc5 27. Qc4 Qxc4 28. Bxc4
$11 {[%mdl 4096] Endgame KBB-KBN} Nc5 29. Kf1 b5 30. axb5 cxb5 31. Bxb5 {
Hoping for Bc4.} Nxb3 32. Ke2 Nc5 (32... Bc5 {with more complications.} 33. f4
Nd4+ 34. Bxd4 Bxd4 35. Kf3 Bg1) 33. Bd4 a4 34. Bxc5 Bxc5 35. Bxa4 $14 {KB-KB}
Kf8 36. Bb3 Ke7 37. f4 f6 38. e6 f5 {The position is equal.} 39. Kf3 h5 40. Kg2
Kf6 41. Kf3 Ke7 42. Kg2 Kf6 43. Kf3 Ke7 {Weighted Error Value: White=0.05/
Black=0.04} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.26"]
[Round "9.2"]
[White "Mamedyarov, Shakhriyar"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2782"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,49,13,21,4,20,19,21,0,0,0,0,0,0,0,0,0,0,0,0,-27,0,0,0,0,0,0,0,0]} 1.
d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1
O-O 9. Be2 cxd4 10. cxd4 Qa5+ 11. Bd2 Qxa2 12. O-O Bg4 13. Rxb7 {D85: Exchange
Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} Bxf3 14. Bxf3 {
[#] And now e5 would win.} Bxd4 15. e5 Na6 {[%cal Bb8a6,Ba6c5,Bc5d3,Bd3e1]
[%mdl 32]} 16. Rxe7 Rad8 {Threatens to win with ...Bc5.} 17. e6 fxe6 {[#]
aiming for ...Bc5.} 18. Qe1 {[#]} Nc5 $146 ({Predecessor:} 18... Bf6 19. Rxa7
Rxd2 20. Rxa6 Qxa6 21. Qxd2 Qb6 22. g3 Bd4 23. Qe2 Rf6 24. Kg2 Qb2 25. Qxb2
Bxb2 {1/2-1/2 (44) Grischuk,A (2776)-Vachier Lagrave,M (2760) Bucharest 2021})
19. Bc3 {Bxd4 is the strong threat.} Nd3 20. Bxd4 $1 Nxe1 21. Rg7+ Kh8 22. Rd7+
{The position is equal.} Kg8 ({Wrong is} 22... e5 $2 23. Bxe5+ Rf6 24. Bxf6+
Kg8 25. Rxd8+ $18) 23. Rg7+ Kh8 24. Rd7+ Kg8 ({Not} 24... e5 $2 25. Bxe5+ Rf6
26. Bxf6+ Kg8 27. Rxd8+ $18) 25. Rg7+ {A rather calm draw.  Weighted Error
Value: White=0.03/Black=0.00} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.26"]
[Round "9.3"]
[White "So, Wesley"]
[Black "Dominguez Perez, Leinier"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2772"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,69,26,35,39,51,26,23,16,27,28,28,32,32,12,27,14,19,14,24,19,18,17,15,
32,40,6,5,3,2,0,10,0,6,2,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5
2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. O-O c5 7. dxc5 {7.e4 is the
modern continuation.} Bxc5 8. Qxd8+ Kxd8 9. Be2 {D27: Queen's Gambit Accepted:
Classical main line: 7 e4!? and 7 a4.} Ke7 10. Nc3 b5 11. Nd2 {White has an
edge.} Bb7 12. Nb3 Nbd7 13. Na5 Rab8 14. Bd2 Ne4 15. Nxe4 Bxe4 16. Rfc1 Rhc8
17. a4 bxa4 {[#]} 18. Bxa6 $146 ({Predecessor:} 18. Bc3 a3 19. bxa3 Bd6 20. f3
Bd5 21. e4 Ba8 22. Bxa6 Rc7 23. a4 g5 24. Nc4 {1-0 (42) Gajewski,G (2613)
-Simacek,P (2479) Katowice 2019}) 18... Rc7 19. Bc3 Bd6 20. Rxa4 ({Avoid the
trap} 20. Bxg7 $2 Ra8 $19) 20... Nc5 {[#]The position is equal.} 21. Bb4 $1 {
[%cal Rb4c5] Hoping for Bxc5.} Bd5 22. Bf1 Rcc8 23. Bxc5 Rxc5 24. Rxc5 Bxc5 25.
Nc4 Bxc4 26. Rxc4 $11 {[%mdl 4096] Endgame KRB-KRB} Bd6 27. Rc2 Be5 28. g3 Rxb2
29. Rxb2 Bxb2 {KB-KB} 30. h4 h6 31. Bd3 Bc3 32. Bc2 Bb2 33. Bd3 Bc3 34. Bc2 Bb2
35. Bd3 {Weighted Error Value: White=0.04/Black=0.01} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.26"]
[Round "9.4"]
[White "Svidler, Peter"]
[Black "Xiong, Jeffery"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2714"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,87,14,40,22,29,23,43,31,40,42,47,35,103,109,114,101,112,101,93,43,47,
54,131,120,138,75,80,60,90,64,78,16,14,9,16,8,13,5,47,29,39,22,75,70,75,75,103,
56,60,48,54,20,17,16,19,0,0,0,0,0,0,0,0,0,0,-8,-1,-14,0,0,0,0,0,0,0,0,0,0,0,0]
} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 h6 5. a4 d6 6. Nc3 {C55: Two Knights: 4
d3, 4 d4 exd4 5 e5 and Max Lange Attack.} g5 7. Be3 Bg7 {[#]} 8. h4 $146 {
White is slightly better.} ({Predecessor:} 8. Qd2 Be6 9. O-O-O d5 10. exd5 Nxd5
11. Rhe1 O-O 12. Bxd5 Bxd5 13. h4 f6 14. hxg5 fxg5 15. Nxd5 Qxd5 {0-1 (63)
Gokerkan,C (2452)-Sanal,V (2545) Kemer 2019}) 8... g4 9. Nh2 Ne7 10. Qe2 c6 {
[#]} (10... h5 $14) 11. d4 $1 $36 {[%mdl 2048] White has strong initiative.}
exd4 12. Bxd4 Ng6 13. O-O-O Qe7 14. Bxf6 (14. Kb1 {looks sharper.} a6 15. a5 h5
16. Nf1 Be6 17. Ne3) 14... Bxf6 15. Nxg4 Bxh4 {[#]} (15... Bxg4 $14 16. Qxg4
Bxc3 17. bxc3 Ne5) 16. Ne3 $1 Bf6 17. Qd2 (17. Rhe1 $142) 17... h5 18. Kb1 h4
19. Rhe1 {Black must now prevent Nf5.} Bg5 $1 20. Qxd6 ({White should play} 20.
Qd4 $16 {And now Nf5 would win.} Qe5 21. Nf5 (21. Qxd6 Qxd6 22. Rxd6 h3 $14)
21... Qxd4 22. Rxd4) 20... Qxd6 $11 21. Rxd6 Ne5 {Strongly threatening ...Bxe3.
} 22. Bb3 h3 23. gxh3 Bxh3 (23... Nf3 $5 {[%cal Rf3e1]} 24. Rh1 Rxh3 $11) 24.
Nf5 Rd8 25. Ka2 Rxd6 (25... Bg4 $11) 26. Nxd6+ $16 Ke7 27. Nxb7 Bc8 28. Nc5 Rh2
29. Rg1 f6 30. f4 Bxf4 {The position is equal.} 31. Rg8 Be3 $1 32. Nd3 (32.
Rxc8 {is interesting.} Bxc5 33. a5 Bd4 34. Nd1 Re2 35. c3) 32... Nxd3 33. cxd3
Ba6 34. Rg7+ Kd6 35. Bc4 Bxc4+ 36. dxc4 $11 {[%mdl 4096] Endgame KRB-KRN} a5
37. Rf7 Bd4 38. Kb3 Rh4 39. Rf8 Kc5 40. Ra8 Kb6 41. Rb8+ Kc5 42. Ra8 Kb6 43.
Rb8+ Kc5 44. Ra8 {Weighted Error Value: White=0.12/Black=0.10} 1/2-1/2

[Event "GCT Sinquefield Cup 2021"]
[Site "Saint Louis"]
[Date "2021.08.26"]
[Round "9.5"]
[White "Rapport, Richard"]
[Black "Caruana, Fabiano"]
[Result "1/2-1/2"]
[ECO "B44"]
[WhiteElo "2763"]
[BlackElo "2806"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2021.08.17"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,123,20,18,7,8,8,16,14,12,0,4,-3,31,35,37,38,32,30,31,29,41,33,43,43,
50,34,43,45,50,43,64,61,90,70,72,66,73,70,71,66,68,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-9,0,-31,-7,-7,-8,-2,0,0,0,-12,-12,-29,-29,-29,-30,-30,-33,-51,-35,-16,-24,
-115,-130,-129,-130,-121,-121,-182,-177,-221,-233,-279,-212,-286,-286,-286,
-264,-262,-253,-264,-256,-279,-198,-198,-197,-196,-196,-188,-14,-41,0,0,-8,-8,
0,0,0,-8,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Bf4 d6 {
Threatening ...Nxd4.} 6. Nxc6 {B44: Sicilian: Taimanov: 5 Nb5.} (6. Bb5 {
feels hotter.} Qc7 7. Ba4 e5 8. Nb5 Qa5+ 9. Bd2) 6... bxc6 7. c4 Rb8 8. Qc2 e5
9. Be3 Nf6 10. Nc3 Qc7 11. Be2 Be7 12. O-O {[#]} O-O $146 ({Predecessor:} 12...
Be6 13. Rfc1 O-O 14. Rab1 a5 15. a3 Ng4 16. Bxg4 Bxg4 17. c5 Be6 18. cxd6 Bxd6
{1/2-1/2 (56) Warmerdam,M (2535)-Pichot,A (2630) chess24.com INT 2021}) 13.
Rac1 Be6 14. b3 h6 15. h3 a5 16. Rfd1 Rfd8 17. Bf3 Nh7 18. Qe2 Bg5 19. Rd3 Qe7
20. Rcd1 Rd7 21. Bd2 Bxd2 22. Qxd2 Ng5 23. Be2 (23. Rxd6 Rbd8 $15) 23... Rbd8
$1 24. Qe3 f5 25. c5 ({White should try} 25. Bf3 $14) 25... d5 $11 26. exd5
Bxd5 27. f4 Ne4 28. Nxd5 cxd5 29. c6 d4 30. Qc1 Rc7 31. fxe5 Qxe5 32. Qc4+ Kh7
33. Bf3 Ng5 34. h4 (34. Rxd4 $2 Nxf3+ 35. gxf3 Qg3+ 36. Kf1 Qxf3+ 37. Kg1 Rxd4
$19) 34... Nxf3+ 35. Rxf3 Rd5 36. h5 Qe4 37. Rdf1 d3 {aiming for ...d2.} 38.
Rf4 Qe6 39. Rxf5 $1 Qe3+ 40. Kh2 Rd4 41. Re1 $1 {[%cal Re1e3]} Rxc4 {[%cal
Rc4h4]} 42. Rxe3 $15 {[%mdl 4096] Endgame KRR-KRR} Rd4 {...d2 is the strong
threat.} 43. Rf1 (43. Re8 $1 $11 {keeps the balance.}) 43... d2 $17 44. Rd1
Rxc6 {White must now prevent ...Rc1.} 45. Re2 Rc2 46. a3 {[#]} (46. a4 $17 {
was called for.}) 46... Rd5 $1 $19 47. Kg3 Rc3+ 48. Kh4 Rd4+ (48... Rxb3 49.
Rexd2 Rxd2 50. Rxd2 $19) 49. g4 Rdd3 {[%csl Gc3][%cal Rd3h3]} (49... Rxb3 50.
Rexd2 Rxd2 51. Rxd2 $19) 50. Rh2 Rc2 51. b4 {[#]} a4 ({Inferior is} 51... Rxa3
52. bxa5 Raa2 53. Re2 $11) 52. b5 Rb2 53. Rh3 Rd6 54. Rh2 Ra2 55. Rg2 Kg8 ({
Stronger than} 55... Rxa3 56. Rdxd2 Rxd2 57. Rxd2 $11) 56. Rh2 Kf7 $2 ({And not
} 56... Rxa3 57. Rdxd2 Rxd2 58. Rxd2 $11) (56... Rd3 $19 {Threatens to win
with ...Kh7.} 57. b6 Rb2) 57. Re2 $11 Rb2 (57... Rd7 {is more complex.} 58. b6
Kg8 59. Rdxd2 Rdxd2 60. b7 Rdb2) 58. Rf1+ {The position is equal.} Rf6 59. Rd1
Rd6 60. Rf1+ Rf6 61. Rd1 Rd6 62. Rf1+ {And White is the lucky defender. 
Weighted Error Value: White=0.09/Black=0.11} 1/2-1/2

