[Event "Airthings Masters KO 2020"]
[White "Carlsen,Magnus"]
[Black "Dubov,Daniil"]
[Site "Online"]
[Round "1.1"]
[Annotator "TA"]
[Result "0-1"]
[Date "2020.12.28"]
[WhiteElo "2862"]
[BlackElo "2699"]
[PlyCount "76"]

1. Nf3 {} Nf6 2. c4 e6 3. Nc3 c5 4. e3 a6 5. d4 d5 6. cxd5 exd5 7. g3 {D40: Queen's Gambit Declined: Semi-Tarrasch with 5 e3.} Nc6 8. Bg2 c4 9. 0-0 {White has an edge.} Bb4 10. Ne5 0-0 11. Bd2 Re8 12. Nxc6 bxc6 13. b3 {[#]} Bxc3 $5 $146 { An interesting novelty.} ({Predecessor:} 13... a5 14. Qc2 cxb3 15. axb3 g6 16. Rfc1 Bf5 17. Qd1 Qd6 18. Ra2 h5 19. Na4 h4 {1/2-1/2 
(37) Carlsen,M (2845)-Mamedyarov,S (2790) Shamkir 2019} )14. Bxc3 Ne4 15. Rc1 a5 16. bxc4 Ba6 $1 17. f3 Nxc3 18. Rxc3 Bxc4 19. Rf2 Qg5 20. Qc1 h5 21. Bf1 Bxf1 22. Kxf1 Rab8 23. Rxc6 h4 24. Kg2 Rxe3 25. Rc8+ (25. f4 {is interesting.} Rxg3+ 26. hxg3 Qxg3+ 27. Kf1 Qd3+ 28. Kg2 )Rxc8 26. Qxc8+ $11 { Endgame KQR-KQR} Kh7 27. Qd7 f6 28. Qb5 Qf5 {[#] Hoping for ...h3+.} 29. g4 h3+ 30. Kg3 Qe4 {Strongly threatening ...f5.} 31. Qxa5 $2 {} (31. Qd7 $11 )f5 $19 32. gxf5 Qxf5 33. Qb5 Re6 {[#] ( -> ...Qg5+)} 34. Re2 Rg6+ 35. Kf2 Qf4 36. Qb1 Kh6 37. Qd3 Qxh2+ 38. Ke3 Re6+ {Weighted Error Value:
White=0.87/Black=0.22} 0-1

[Event "Airthings Masters KO 2020"]
[White "Nepomniachtchi,Ian"]
[Black "Radjabov,Teimour"]
[Site "Online"]
[Round "1.1"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2020.12.28"]
[WhiteElo "2784"]
[BlackElo "2765"]
[PlyCount "145"]

1. d4 {} Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Bd3 0-0 8. Qc2 Nbd7 {} 9. Nge2 Re8 10. 0-0 Nf8 11. f3 g6 {11...Be6 is vanishing.} 12. Rad1 Ne6 {D36: Queen's Gambit Declined:
Exchange Variation: Main line (5 Bg5 c6 6 Qc2).} 13. Bh4 b5 14. Kh1 Bb7 15. Bf2 Rc8 16. Nf4 Nxf4 17. exf4 Bd6 18. Ne2 Nh5 19. f5 {[#]} Qc7 $146 ({Predecessor:
} 19... Qf6 20. g4 Nf4 21. Nxf4 Bxf4 22. Kg2 Rc7 23. Rfe1 Rce7 24. Rxe7 Rxe7 25. h4 Bc8 26. Bxb5 Bxf5 27. Qxc6 {1/2-1/2 (38) Lafarga Santorroman,D (2636)
-Velilla Velasco,F (2566) ICCF email 2010} )20. g3 b4 21. Qd2 a5 22. Rfe1 Rcd8 23. Kg2 Bc8 24. Ng1 Ng7 25. fxg6 hxg6 26. Nh3 c5 27. g4 c4 (27... Bxh2 $2 28. Rh1 $18 )28. Bb1 Ne6 (28... Bxh2 $2 29. Qh6 $18 )29. Bh4 {[#]} (29. Qh6 $17 )c3 ({Inferior is} 29... Bxh2 30. Qh6 $16 )(29... Kg7 $1 $19 {And now ...
Rh8 would win.} 30. Bg3 (30. Bxd8 $2 Qxd8 31. Re5 Bxe5 $19 )Rh8 )30. bxc3 $17 bxc3 31. Qf2 {[#]} (31. Qc1 $142 )Be7 ({Not} 31... Bxh2 $2 32. Bf6 $18 )(31... Kg7 $1 $17 32. Rc1 Rh8 )32. Bg3 Bd6 ({Black should try} 32... Qc6 $15 )33. Rc1 Bxg3 34. hxg3 Qc4 35. Re3 Qxd4 {...Nf4+! is the strong threat.} 36. Rexc3 Qf6 37. Ra3 d4 38. Be4 d3 ({Black should play} 38... Ng5 $15 39. Nxg5 Qxg5 )39. Rxd3 $11 Rxd3 40. Bxd3 Bb7 41. Re1 Rd8 42. Be4 Bxe4 43. Rxe4 Qc3 44. Nf4 Rd2 45. Re2 Rxe2 46. Qxe2 Nxf4+ 47. gxf4 { Endgame Threatens to
win with Qe8+. KQ-KQ} Kf8 48. a4 Qb4 49. Qe4 Qd2+ 50. Kg3 Qd1 51. f5 Qg1+ 52. Kf4 Qc1+ 53. Ke5 Qc5+ 54. Qd5 f6+ 55. Ke4 gxf5+ 56. Qxf5 Qc4+ 57. Ke3 Qb3+ 58. Kf2 Qxa4 59. Qxf6+ Kg8 60. Kg3 {Black must now prevent Qg5+.} Qb4 {The
position is equal.} 61. Qe6+ Kf8 62. g5 a4 63. Qe5 (63. Qf6+ {with more
complications.} Kg8 64. f4 a3 65. Qe6+ Kf8 66. Qf6+ )a3 64. g6 {aiming
for Qf6+.} Kg8 $1 65. Qe6+ (65. f4 {is interesting.} Qb3+ 66. Kh4 Qa2 67. Qe4 Qf2+ 68. Kg5 )Kg7 66. Qf7+ (66. f4 {seems wilder.} Qc3+ 67. Kg4 Qf6 68. Qd7+ Kxg6 69. Qd3+ )Kh6 67. Kh3 {g7 would kill now.} (67. g7 {is more
complex.} Qe1+ 68. Kf4 Qc1+ 69. Ke4 Qc2+ 70. Kf4 )Qb1 68. Qh7+ (68. f4 {
looks sharper.} Qf1+ 69. Kg4 Qg1+ 70. Kf5 Qc5+ 71. Ke4 )Kg5 69. f4+ {
 Decoy} Kxf4 {} 70. Qh4+ Kf5 71. Qg4+ Kf6 72. Qf3+ Kxg6 {
( -> ...Qf5+)} 73. Qxa3 {Weighted Error Value: White=0.11/Black=0.12} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Vachier-Lagrave,Maxime"]
[Black "So,Wesley"]
[Site "Online"]
[Round "1.1"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2020.12.28"]
[WhiteElo "2784"]
[BlackElo "2770"]
[PlyCount "99"]

1. e4 {} e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 Be7 {C67: Ruy Lopez: Berlin Defence: 4 0-0
Nxe4.} 10. Nc3 Nh4 11. Nxh4 Bxh4 {White has an edge.} 12. Be3 Ke8 13. Ne2 h5 14. Rad1 Be7 15. f4 g6 {[#]} 16. Rd2 $146 ({Predecessor:} 16. Nd4 Bd7 17. f5 Bxf5 18. Nxf5 gxf5 19. Rxf5 h4 20. Kf2 a5 21. Kf3 a4 22. Rd4 {1/2-1/2 (54)
Karjakin,S (2760)-Adams,M (2712) Batumi 2018} )h4 17. Nd4 a6 18. Nb3 b6 19. Nd4 c5 20. Nc6 Bd7 (20... Bb7 $11 21. Nxe7 Kxe7 )21. Nxe7 $14 Kxe7 {[#]} 22. Rfd1 ({White should try} 22. f5 $1 $16 Bxf5 23. Bg5+ Ke6 24. Bf6 )Bf5 $11 23. Kf2 a5 24. Kf3 a4 25. a3 Ra5 26. c4 (26. Bf2 $11 )Raa8 $15 27. Bf2 Be6 28. Be3 {[#] aiming for f5!} Rh5 29. Rc1 Rf5 30. Ke2 Rg8 31. Rc3 g5 32. fxg5 {The position is equal.} Rxe5 33. Kf2 Re4 34. Kf3 Rxc4 35. Rxc4 Bxc4 $11 {
 Endgame KRB-KRB} 36. Bf4 Rd8 37. Rxd8 Kxd8 {KB-KB} 38. Kg4 Bd5 39. Kxh4 Bxg2 40. Kg3 Bf1 41. h4 Be2 42. Be5 c6 43. Kf4 Ke7 44. Bc7 b5 45. Ke5 Kf8 46. Kd6 Bf3 47. Kxc5 Kg7 48. h5 Bxh5 49. Kxc6 Be2 50. Be5+ {Weighted Error
Value: White=0.09/Black=0.06} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Aronian,Levon"]
[Black "Nakamura,Hikaru"]
[Site "Online"]
[Round "1.1"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2020.12.28"]
[WhiteElo "2781"]
[BlackElo "2736"]
[PlyCount "80"]

1. d4 {} g6 2. e4 Nf6 3. Nc3 d6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 Nc6 7. d5 Nb8 8. a4 a5 {was the old line (8...e6). B08: Pirc Defence: Classical
System.} 9. Re1 c6 10. Be3 {[#]} cxd5 $146 {White is slightly better.} ({
Predecessor:} 10... Na6 11. Nd2 e6 12. Nc4 cxd5 13. exd5 exd5 14. Bb6 Nc7 15. Nb5 Nfe8 16. Ncxd6 Qd7 17. Nxe8 Nxe8 {1-0 (46) Nisipeanu,L (2665)-Graf,A (2596)
Bad Wiessee 2014} )11. exd5 Nbd7 12. Bb5 Nc5 13. Qe2 (13. Bxc5 {is interesting.
} dxc5 14. Qd2 Bd7 15. Rad1 Bg4 16. Qf4 )Bg4 14. Bxc5 dxc5 15. Qxe7 ({
White should try} 15. h3 $16 Bxf3 16. Qxf3 )Nxd5 16. Qxd8 (16. Qxc5 Bxc3 17. bxc3 Rc8 $17 )(16. Nxd5 {is more complex.} Qxd5 17. Ne5 Be6 18. Rad1 Qa2 19. Bd7 )Raxd8 17. Nxd5 Rxd5 18. c3 Rfd8 19. Bc4 Bxf3 20. gxf3 Rg5+ 21. Kf1 Rf5 22. Rad1 Rxd1 23. Rxd1 Rxf3 $11 { Endgame KRB-KRB} 24. Rd8+ Bf8 25. Rb8 Kg7 (25... Rf4 $5 {} 26. b3 h5 $14 )26. Rxb7 Bd6 {[#]} (26... Rf4 $14 27. b3 Bd6 )27. Rd7 ({Better is} 27. Ra7 $1 $16 )Bb8 $14 28. Rb7 Be5 (28... Bd6 $1 $11 {remains equal.} )29. Rb5 { Double
Attack} Bxh2 $2 {Black cannot hold the game after this.} ({Black should play} 29... Bc7 $14 )30. Kg2 $18 ({Much less strong is} 30. Rxa5 $6 Bg3 $14 )(30. Rxc5 Bg3 $11 )Rf4 31. Rxc5 ({Worse is} 31. Kxh2 Rxc4 32. Rxa5 h5 $11 )Rh4 {[#]} 32. Bd5 $1 ({But not} 32. Rxa5 $6 Rxc4 33. Kxh2 h5 $16 )Bd6 33. Rxa5 f5 (33... h5 {was called for.} 34. Ra6 Rg4+ 35. Kf1 Be5 )34. Ra6 Be5 35. Re6 Bb8 36. a5 {} Rg4+ 37. Kf1 {White is
clearly winning.} Ra4 38. a6 Kh6 39. b4 {} Ba7 40. b5 Ra1+ { Weighted Error Value: White=0.13/Black=0.39. An
unexpected result.} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "So,Wesley"]
[Black "Vachier-Lagrave,Maxime"]
[Site "Online"]
[Round "1.1"]
[Annotator "TA"]
[Result "0-1"]
[Date "2020.12.28"]
[WhiteElo "2770"]
[BlackElo "2784"]
[PlyCount "90"]

1. e4 {} c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bc1 Nf6 8. Be3 Ng4 9. Bg5 h6 10. Bh4 g5 11. Bg3 Bg7 {11...Bg7 was played by the boomers.} 12. h3 Ne5 13. Nf5 Bxf5 {B90:
Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 14. exf5 Nbc6 15. Nd5 e6 {The position is equal.} 16. fxe6 fxe6 17. Ne3 Qa5+ 18. c3 Nf3+ $1 19. gxf3 (19. Qxf3 $14 Bxc3+ 20. Kd1 Bxb2 21. Qe4 Bxa1 22. Qxe6+ Kd8 23. Qxd6+ Ke8 24. Qg6+ Kd8 25. Qd6+ Ke8 26. Qe6+ Ne7 27. Bd6 Qa4+ 28. Nc2 )Bxc3+ $1 $11 20. bxc3 Qxc3+ 21. Qd2 Qxa1+ 22. Nd1 {[#]} Qf6 $5 $146 {
An interesting novelty.} ({Predecessor:} 22... Qd4 23. Bd3 Rf8 24. 0-0 Rxf3 25. Ne3 Kd7 26. Rd1 Raf8 27. Qe2 Qc5 28. Be4 Nd4 29. Qd3 Rxg3+ 30. fxg3 e5 31. Kg2 b5 32. Qd2 Rc8 33. Nf5 Qc3 34. Nxd4 {1-0 (32) Giri,A (2779)-Vachier Lagrave,M 
(2775) Paris 2019} )23. Bg2 (23. Bxd6 $2 Rd8 $19 )Rd8 24. f4 Nd4 (24... gxf4 $1 $11 25. Bxf4 Rg8 )25. Ne3 (25. fxg5 $14 hxg5 26. Qd3 )gxf4 26. Ng4 Qf5 (26... Qg6 $5 {} 27. Qxd4 Qb1+ 28. Ke2 Qxa2+ 29. Ke1 Qb1+ 30. Kd2 Qa2+ 31. Ke1 Qb1+ 32. Kd2 Qa2+ 33. Kd3 Qb3+ 34. Ke2 e5 35. Nxe5 Qa2+ 36. Kf3 fxg3 $11 )27. Qxd4 Qb1+ 28. Ke2 Qxa2+ 29. Kf3 Qb3+ 30. Ne3 Rf8 31. Bh4 ({Reject} 31. Bxf4 e5 $17 )e5 32. Qe4 {Hoping for Qg6+.} fxe3+ 33. Kg3 exf2+ 34. Kh2 f1=N+ 35. Bxf1 Rc8 36. Bg2 $1 {aiming for Qg6+.} Rg8 {White must
now prevent ...Rc4!} 37. Rg1 (37. Rb1 $11 {keeps the balance.} Qa2 38. Bg3 (38. Rxb7 $2 Rxg2+ 39. Qxg2 Rc2 $19 ))Rg7 ({Better is} 37... Rc4 $17 38. Qd5 Rg6 )38. Bf6 $40 { White mounts an attack.} Rf7 39. Qg4 $2 {} Rc2 $2 ({Black should try} 39... Qc4 $19 40. Bh4 Qxg4 41. hxg4 Rc2 )40. Qg8+ $14 { White has compensation.} Kd7 {Strongly threatening ...
Rc8.} 41. Bh4 {White wants to mate with Qd8+.} Rf3 {} 42. Qd8+ $1 Kc6 {And now ...Qe6 would win.} 43. Bg3 {[#]} (43. Rc1 $11 Rxc1 44. Qc8+ Kb6 45. Qxc1 )Qe6 (43... h5 $1 $17 )44. Rb1 $2 { [#]} (44. Kh1 $11 e4 45. Qh4 Rxg2 46. Rxg2 )Rxg2+ $1 $19 45. Kxg2 {[#]} Rxg3+ $1 { Weighted Error Value: White=0.42/Black=0.24} 0-1

[Event "Airthings Masters KO 2020"]
[White "Radjabov,Teimour"]
[Black "Nepomniachtchi,Ian"]
[Site "Online"]
[Round "1.1"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2020.12.28"]
[WhiteElo "2765"]
[BlackElo "2784"]
[PlyCount "78"]

1. Nf3 {} c5 2. c4 Nc6 3. e3 Nf6 4. Nc3 e6 5. d4 d5 6. cxd5 Nxd5 7. Bd3 Be7 8. 0-0 (8. a3 0-0 9. Nxd5 Qxd5 10. Qc2 h6 11. Be4 Qd6 12. dxc5 Qxc5 13. Qxc5 Bxc5 14. b4 Be7 15. Bb2 Bd7 16. Ke2 Rfd8 17. Rhd1 f5 18. Bc2 Bf6 19. Bxf6 gxf6 {1/2-1/2
(84) Radjabov,T (2765)-Nepomniachtchi,I (2784) chess24.com INT 2020} )0-0 9. Re1 b6 10. Nxd5 {D42: Queen's Gambit Declined: Semi-Tarrasch: 5 cxd5 Nxd5 6
e3 Nc6 7 Bd3 .} exd5 11. dxc5 bxc5 12. Bd2 {[#]} Qb6 $146 ({Predecessor:} 12... c4 13. Be2 Bf6 14. Qc2 Rb8 15. Bc3 Be6 16. Red1 Bxc3 17. Qxc3 Qa5 18. Qxa5 {
1/2-1/2 (18) Shariyazdanov,A (2612)-Ruck,R (2472) Oberwart 2000} )13. Bc3 Rd8 14. h3 Be6 15. Qa4 a5 16. Qf4 d4 (16... Nb4 $11 17. Bb1 (17. Qe5 $2 Bf6 $19 )h6 )17. exd4 $14 cxd4 18. Bd2 {[#] Rxe6! is the strong threat.} (18. Rxe6 $5 fxe6 19. Bd2 $14 )Nb4 $1 {} 19. Bxb4 axb4 20. Rac1 {
Black must now prevent Qe4!} Qd6 21. Qe4 {} g6 22. Bc4 {} (22. Rc6 $5 {} Qd5 23. Qxd5 Bxd5 24. Rc2 $15 )Bxc4 {
The position is equal.} 23. Rxc4 Bf8 $1 24. Rxd4 Qa6 25. a3 bxa3 26. bxa3 Qxa3 27. Rxd8 Rxd8 28. g3 Qb4 (28... Qa5 {looks sharper.} 29. Kg2 Qc5 30. Re2 Rd1 31. h4 Qd5 )29. Qxb4 Bxb4 $11 { Endgame KRB-KRN} 30. Re2 Kf8 31. Kg2 Re8 (31... Rd7 {keeps more tension.} 32. Ne5 Re7 33. Kf3 Bd6 34. Nc4 Rxe2 35. Kxe2 Bc7 )32. Rxe8+ Kxe8 {KB-KN} 33. Ng1 Kf8 34. Nf3 Kg8 35. Ng1 Bf8 36. Nf3 Bg7 37. Ng1 Bf8 38. Nf3 Bg7 39. Ng1 Bf8 {Weighted Error Value: White=0.05/
Black=0.07} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Nakamura,Hikaru"]
[Black "Aronian,Levon"]
[Site "Online"]
[Round "1.1"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2020.12.28"]
[WhiteElo "2736"]
[BlackElo "2781"]
[PlyCount "72"]

1. d4 {} Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bf4 {D38: Queen's Gambit
Declined: Ragozin Defence (4 Nf3 Bb4).} 0-0 {[#]} 7. Qb3 $146 ({Predecessor:} 7. e3 Bf5 8. Qb3 Nc6 9. Nh4 Be6 10. Bd3 a5 11. 0-0 Nh5 12. Bg3 Nxg3 13. hxg3 Be7 {1-0 (58) Carlsen,M (2863)-Firouzja,A (2728) chess24.com INT 2020} )c5 8. dxc5 {The position is equal.} Nc6 {And now ...d4 would win.} 9. e3 Ne4 10. Be2 Nxc5 11. Qc2 d4 {[#] White must now prevent ...d3.} 12. exd4 (12. Rd1 $1 $14 )Ne6 13. Be3 {Hoping for Rd1.} Nexd4 14. Nxd4 Nxd4 15. Bxd4 Qxd4 16. 0-0 Be6 17. Bf3 Rac8 {} 18. Bxb7 Rc7 19. Rfd1 Qe5 {} 20. Bf3 Bxc3 21. bxc3 Rxc3 22. Qa4 Qc5 23. Qd4 Qxd4 24. Rxd4 Ra3 25. Bd5 Rd8 26. Rad1 Bxd5 27. Rxd5 Rxd5 28. Rxd5 $11 { [#] Endgame
KR-KR} Kf8 29. Rd2 Ke7 30. h4 h5 (30... Ra4 {is more complex.} 31. g3 g6 32. Re2+ Kd6 33. Rd2+ Ke5 )31. g3 g6 32. Kg2 Ke6 33. Re2+ Kd6 34. Rd2+ Ke6 35. Re2+ Kd6 36. Rd2+ Ke6 {Not much happened in this game.  Weighted Error Value:
White=0.08/Black=0.07} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Dubov,Daniil"]
[Black "Carlsen,Magnus"]
[Site "Online"]
[Round "1.1"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2020.12.28"]
[WhiteElo "2699"]
[BlackElo "2862"]
[PlyCount "124"]

1. d4 {} Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Nbd2 Bd7 {E04: Open Catalan: 5 Nf3.} 7. 0-0 Bxd2 8. Bxd2 Bc6 {White has an edge.} 9. Rc1 Bd5 10. Bg5 Nbd7 {[#]} 11. Ne5 $146 {Threatens to win with e4.} (11. Re1 {with more complications.} h6 12. Bxf6 Nxf6 13. Ne5 Bxg2 14. Kxg2 Qd5+ 15. f3 )({Predecessor:} 11. Re1 h6 12. Bxf6 Nxf6 13. Qa4+ c6 14. Qa3 Bxf3 15. Bxf3 Qe7 16. Qxe7+ Kxe7 17. Rxc4 {
1/2-1/2 (78) Melkumyan,H (2642)-Grachev,B (2654) Tbilisi 2017} )Bxg2 12. Kxg2 Nxe5 13. dxe5 Qd5+ 14. Qxd5 Nxd5 15. Rxc4 {Black must now prevent e4.} h6 16. Bc1 (16. Bd2 {is more complex.} 0-0-0 17. Rfc1 Rd7 18. h4 Nb6 19. R4c2 )0-0-0 17. Rg4 Rh7 18. h4 h5 19. Ra4 a6 20. Bg5 Rd7 21. Ra3 Rh8 22. Rc1 Nb4 23. Rf3 Nc6 24. Rc5 Rf8 25. Rfc3 Nd4 26. Be3 {Black should prevent Bxd4.} Nf5 27. Bg5 Nd4 28. Be3 {next Bxd4 is good for White.} c6 29. R5c4 Rfd8 30. Bg5 $1 {} Rf8 31. Rd3 $1 Nb5 32. Rxd7 $1 Kxd7 $16 { Endgame
KRB-KRN} 33. a4 Nc7 34. Rd4+ Kc8 35. a5 Nd5 36. e4 Nc7 (36... c5 $16 37. Rc4 Nb4 )37. Kf3 $18 Nb5 38. Rd1 Rh8 (38... f6 $16 39. exf6 e5 )39. g4 hxg4+ 40. Kxg4 c5 41. Rc1 Nd4 42. Rxc5+ Kd7 43. h5 Nb3 44. Rc3 Nxa5 45. Rd3+ (45. Rf3 $142 $1 {} Rf8 46. Rd3+ Kc8 47. Be7 )Kc8 $16 46. f4 Nc6 47. Bh4 Kc7 48. Rd6 ({Better is} 48. Kg5 $16 )a5 (48... g6 $1 $11 {remains
equal.} )49. Bg3 Re8 50. Kg5 $1 b5 51. f5 $1 a4 52. f6 (52. Bf4 $1 $16 )Rg8 $11 {With the idea ...gxf6+.} 53. Rd3 (53. Kh4 $14 )b4 54. Bf4 Kb6 (54... gxf6+ $11 55. Kxf6 Rg4 )55. fxg7 $1 $16 Rxg7+ 56. Kf6 Rh7 57. h6 Kc5 58. Be3+ Kc4 59. Rd6 Kb5 {[#]} 60. Rd3 (60. Bc1 $1 $16 )Kc4 $11 61. Rd6 ({
White should try} 61. Rd1 $11 )Kb5 $16 {[#]} 62. Rd3 (62. Bc1 $1 $16 )Kc4 {Weighted Error Value: White=0.15/Black=0.14} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Carlsen,Magnus"]
[Black "Dubov,Daniil"]
[Site "Online"]
[Round "1.2"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2020.12.28"]
[WhiteElo "2862"]
[BlackElo "2699"]
[PlyCount "152"]

1. e4 {} e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. 0-0 Nxb5 6. Nxb5 c6 7. Nc3 d6 8. d4 Qc7 9. Bg5 {C48: Four Knights: 4 Bb5, replies
other than 4...Bb4.} Be7 10. a4 h6 {[#]} 11. Bh4 $146 {The position is equal.} ({Predecessor:} 11. Bxf6 Bxf6 12. d5 0-0 13. Qd3 Be7 14. Nd2 Bd7 15. a5 Rac8 16. a6 b5 17. dxc6 Bxc6 18. Nxb5 Bxb5 19. Qxb5 Qxc2 {1/2-1/2 (44) Perez Ponsa,
F (2554)-Pichot,A (2630) chess24.com INT 2020} )Nh5 12. Bxe7 Qxe7 13. a5 Nf4 14. Ne2 Nxe2+ 15. Qxe2 0-0 16. Rfd1 Bg4 17. h3 Bxf3 18. Qxf3 Rad8 19. a6 b6 20. Ra3 exd4 21. Rxd4 Qe5 22. Rad3 c5 23. Rd5 Qxb2 24. Qe2 Rfe8 25. e5 c4 26. Rd1 Rc8 {} 27. Rxd6 Qxe5 28. Qxe5 Rxe5 $11 { Endgame
KRR-KRR} 29. Rd7 Rce8 30. Rxa7 Re1+ $1 31. Rxe1 Rxe1+ $14 {KR-KR} 32. Kh2 {
And now Rc7 would win.} Ra1 33. Kg3 ({Better is} 33. Ra8+ $16 Kh7 34. a7 )b5 $1 $11 34. Ra8+ Kh7 35. a7 Kg6 {[#]} (35... b4 $11 {keeps the balance.} )36. Kf4 (36. c3 $1 $16 )b4 $1 $14 37. Rb8 Rxa7 38. Rxb4 Rc7 39. Ke3 Kf5 40. Kd4 Re7 41. Rxc4 Re2 42. g4+ Kg5 $2 (42... Ke6 $11 {and Black has nothing to
worry.} )43. Rc5+ $18 Kf6 44. Rf5+ Ke6 45. c4 g6 (45... Rd2+ $142 46. Kc3 Ra2 )46. Rf3 Rd2+ 47. Kc3 Ra2 {Hoping for ...Ra3+.} 48. Kb3 Rd2 (48... Ra8 $142 49. Rd3 Rb8+ 50. Ka4 Rc8 )49. Kb4 f5 $2 (49... Rb2+ 50. Kc5 f5 )50. Re3+ (50. gxf5+ $142 gxf5 51. c5 )Kd6 51. f3 (51. gxf5 $18 gxf5 52. c5+ Kc6 53. Re6+ Kd7 {[#]} 54. Kc3 $1 (54. Rxh6 Rxf2 55. Kc4 f4 $16 )Rxf2 55. Rd6+ (55. Rxh6 f4 $16 )Kc8 56. Rxh6 )Rb2+ $11 52. Rb3 (52. Kc3 {looks sharper.} Rh2 53. Kd4 Rxh3 54. c5+ Kc7 55. gxf5 gxf5 56. Kd5 )Rh2 53. Rd3+ Kc6 54. gxf5 (54. f4 {seems wilder.} fxg4 55. hxg4 Rb2+ 56. Kc3 Rf2 57. Rd4 )gxf5 55. Rd5 Rxh3 56. Rxf5 h5 57. Rf6+ Kd7 58. Kb5 h4 59. c5 {aiming for c6+.} Rh1 60. c6+ Ke7 61. Rh6 h3 62. Rh7+ Kd6 63. c7 Rc1 $1 64. Kb6 $2 {} (64. f4 $11 )h2 65. Rh6+ Kd7 66. Rxh2 Rb1+ {Mate.} 67. Kc5 Kxc7 68. Rd2 Rc1+ 69. Kb4 Rc6 70. Rd3 Rf6 71. Kc5 Rf8 72. Kc4 Kc6 73. Kc3 Rf5 74. Kd2 Rd5 75. Ke3 Rxd3+ 76. Kxd3 Kd5 { Quite a comeback for Black.  Weighted Error
Value: White=0.21/Black=0.21. An unexpected result.} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Nepomniachtchi,Ian"]
[Black "Radjabov,Teimour"]
[Site "Online"]
[Round "1.2"]
[Annotator "TA"]
[Result "0-1"]
[Date "2020.12.28"]
[WhiteElo "2784"]
[BlackElo "2765"]
[PlyCount "102"]

1. e4 {} b6 2. d4 Bb7 3. Nc3 e6 4. Nf3 d6 5. a4 a6 6. Bd3 {B00: Queen's Fianchetto
Defence, Nimzowitsch Defence.} Nd7 7. 0-0 {[#]} h6 $146 ({Predecessor:} 7... Ne7 8. Re1 h6 9. b4 g5 10. b5 a5 11. e5 dxe5 12. Be4 Bxe4 13. Nxe4 Bg7 {
0-1 (50) Astaneh Lopez,A (2430)-Howell,D (2698) Balagna 2019} )8. Re1 {White
is slightly better.} Ngf6 9. h3 Be7 10. Bf4 g5 11. Bh2 g4 12. hxg4 Nxg4 13. d5 Rg8 14. dxe6 (14. Qe2 {is interesting.} Bh4 )fxe6 15. Bc4 Rg6 (15... Bh4 $15 16. g3 Qf6 )16. Ne2 Nxh2 (16... Bxe4 $2 17. Nf4 $18 )17. Nxh2 ({White
should try} 17. Kxh2 $11 e5 18. Ng3 )Bg5 {[#]} (17... Bxe4 $2 18. Nf4 $18 )(17... Bh4 $1 $15 {stays ahead.} 18. Nf4 Bxf2+ $1 19. Kxf2 Qf6 )18. Nd4 $1 $16 {} Nf8 19. Qh5 (19. a5 $16 )Qf6 $11 20. e5 Qf7 {...Be3!
is the strong threat.} 21. exd6 $2 { [#] Now White is beyond hope.} (21. Ng4 $1 $11 {and White stays safe.} d5 22. Be2 )Be3 $1 $19 { Double Attack} 22. d7+ Nxd7 23. Ng4 {[#]} Bxf2+ $40 { Black
goes for the king.} 24. Kh1 Bxe1 ({Less strong is} 24... Bxd4 25. Bxe6 Rxe6 26. Rxe6+ Kf8 27. Rg6 $15 (27. Qxh6+ $2 Bg7 $19 ))25. Rxe1 {[#]} 0-0-0 $1 26. Bxe6 {[#]} Rxe6 {} 27. Qxf7 Rxe1+ 28. Kh2 Re4 29. Qg7 h5 30. Nh6 Kb8 31. c3 (31. Qg5 $142 Rc8 32. Ndf5 )Ne5 32. a5 bxa5 33. Ne6 {[#]} Nf3+ $1 {
 Discovered Attack} 34. gxf3 Rxe6 { Discovered Attack} 35. Nf5 Re2+ 36. Kg3 Rxb2 37. Nd4 (37. Kf4 $142 )h4+ 38. Kxh4 Rb6 (38... a4 $142 39. Kg3 a3 )39. Kg3 a4 {} 40. Qe7 Rdd6 (40... Rd5 $142 41. Qe8+ Ka7 42. Qxa4 c5 )41. Nf5 $2 (41. Qe8+ Ka7 42. Qxa4 )Rd3 42. Qf8+ Ka7 43. Qc5 Rd5 44. Qf8 a3 45. Ne7 Rg5+ {Black mates.} 46. Kf4 Ra5 47. Nc8+ Bxc8 48. Qxc8 Rc6 49. Qe8 Rc4+ 50. Kg3 a2 51. Qe3+ Rcc5 {Weighted Error
Value: White=0.72/Black=0.22} 0-1

[Event "Airthings Masters KO 2020"]
[White "Vachier-Lagrave,Maxime"]
[Black "So,Wesley"]
[Site "Online"]
[Round "1.2"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2020.12.28"]
[WhiteElo "2784"]
[BlackElo "2770"]
[PlyCount "207"]

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.} Nd7 7. Nc4 f6 8. Be3 {[#]} Bd6 $146 ({
Predecessor:} 8... Bxe3 9. Nxe3 Nc5 10. 0-0 0-0 11. Qe2 Ne6 12. Rfd1 c5 13. c3 b6 14. Qc2 Kh8 15. Qb3 c6 16. a4 Nf4 17. Qc2 Ba6 18. Ne1 {1/2-1/2 (18) Stevic,
H (2615)-Pap,M (2488) Gunja 2014} )9. d4 Qe7 10. dxe5 Nxe5 11. Nfxe5 Bxe5 12. Qh5+ g6 13. Qe2 b6 14. Nxe5 Qxe5 15. 0-0-0 Qxe4 16. Rhe1 Kf7 17. Qd2 (17. Rd4 $5 {} Qe6 18. Qd3 $14 )Qf5 18. Qc3 Be6 (18... c5 $1 $11 )19. Qxc6 (19. Rd4 $5 {} Qa5 20. Qxa5 bxa5 21. Ra4 $14 )Rac8 20. h3 Rhd8 $1 21. Rxd8 Rxd8 22. Qxc7+ Rd7 23. Qc3 Qd5 $1 24. b3 Qxg2 25. Kb2 (25. h4 $1 $11 {keeps the balance.} )Qxh3 $17 26. Qc8 g5 (26... Qf5 $17 27. f4 (27. Bh6 $2 g5 $17 )Kg7 )27. f4 $1 $132 { White has
counterplay} (27. Bc1 $2 Qf5 $19 )Qh4 28. Bd2 { Pin} Qf2 29. Bb4 Qd4+ 30. Bc3 Qxf4 31. Qh8 Qf5 32. Rh1 (32. Rf1 $1 $15 Qxf1 33. Qxh7+ Ke8 34. Qh8+ { Double Attack} Kf7 35. Qh7+ Ke8 36. Qh8+ { Double
Attack} Kf7 37. Qh7+ )Kg6 $19 33. Qe8+ Kg7 34. Re1 Bf7 35. Qe2 {With the
idea Rf1.} Rd6 36. Rf1 Qd7 37. Qf3 {} Qc6 38. Qg3 (38. Qe3 $142 h6 39. Rf2 )Bg6 39. Re1 Re6 (39... h5 $19 {...Kh6 is the strong threat.} 40. Qe3 Qc7 )40. Rxe6 $11 Qxe6 41. Qxg5 Qf5 42. Qg2 Qe4 43. Qf2 Qf5 44. Qh2 Qd7 45. Qf4 Qe7 46. Bd4 h5 47. a4 Kf7 48. Qb8 Qd7 49. c3 h4 {next ...h3 is good for
Black.} 50. Qh8 Qf5 (50... Qe7 $11 )51. Qxh4 $14 a5 (51... Qc2+ $14 52. Ka3 Qc1+ 53. Kb4 Qg5 )52. Qh1 (52. c4 $1 $18 )b5 53. Qb7+ { Double
Attack} Kg8 54. Qa8+ (54. Qxb5 $2 {is a self mate.} Qb1+ 55. Ka3 Qa1# )Kg7 55. Qxa5 bxa4 56. Qxa4 Qe6 57. Qa7+ Bf7 58. c4 Kg6 59. Qc5 Be8 60. Ka3 Qa6+ 61. Kb4 $1 Qb7+ 62. Qb6 Qxb6+ 63. Bxb6 $16 { Endgame KB-KB} Kf5 64. Bd4 Ke4 65. Kc3 $1 ({Much less strong is} 65. Bxf6 $6 Kf5 $16 )Kf5 66. b4 Ke6 67. b5 Kd6 68. Bb6 Kd7 69. c5 (69. Kb4 $16 )Bh5 $1 $14 70. Kd3 Bf3 {
[#]} ({Better is} 70... Bd1 $14 )71. Ba5 $1 $16 Bg2 72. Kd4 f5 73. Ke5 ({
White should try} 73. Be1 $16 )f4 $11 74. Kd4 f3 {[#]} (74... Ke6 $11 )75. c6+ (75. Be1 $1 $16 f2 76. Bxf2 )Kd6 {And now ...f2 would win.The
position is equal.} 76. Bb4+ Kc7 {Strongly threatening ...f2.} 77. Kc5 {
b6+ would kill now.} f2 78. b6+ Kb8 79. Bc3 {Intending b7 and mate.} f1=Q $1 {
 ( -> ...Qf5+)} 80. Be5+ Kc8 {Hoping for ...Qc1+.} 81. b7+ Kd8 82. b8=Q+ Ke7 83. Qd6+ Kf7 84. Qd7+ Kg6 85. Qg4+ (85. c7 {with more complications.} Qg1+ 86. Bd4 Qc1+ 87. Kb5 Qb1+ 88. Ka5 )Kf7 86. Qd7+ (86. c7 {looks
sharper.} Qc1+ 87. Kb4 Qb1+ 88. Ka5 Qa2+ 89. Kb5 )Kg6 87. Kd6 {White
threatens Qg4+ and mate.} (87. c7 {is interesting.} Qf2+ 88. Bd4 Qf8+ 89. Kb5 Qf1+ 90. Ka5 )Qf8+ 88. Kc7 {aiming for Qg4+.} Qf3 89. Kd8 {Threatening
Qe6+.} (89. Ba1 {feels hotter.} Kh5 90. Qh7+ Kg4 91. Qg6+ Kh3 92. Qh6+ )Qf8+ 90. Kc7 {Threatens to win with Qg4+.} Qf3 91. Qg7+ Kf5 92. Qf6+ Ke4 93. Qe6 Kd3 94. Qb3+ Ke4 95. Bc3 Kf5 96. Qf7+ Ke4 97. Qc4+ Kf5 98. Qf7+ Ke4 99. Qc4+ (99. Qxf3+ {keeps more tension.} Bxf3 100. Bg7 Bg4 101. Kd6 Kd3 102. c7 )Kf5 100. Qc5+ Kg4 101. Qd4+ Qf4+ 102. Qxf4+ Kxf4 103. Kd6 Bxc6 104. Kxc6 {Quite a comeback for White.  Weighted Error Value: White=0.13/Black=0.17} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Aronian,Levon"]
[Black "Nakamura,Hikaru"]
[Site "Online"]
[Round "1.2"]
[Annotator "TA"]
[Result "1-0"]
[Date "2020.12.28"]
[WhiteElo "2781"]
[BlackElo "2736"]
[PlyCount "69"]

1. d4 {} Nf6 2. Nf3 d5 3. Bf4 e6 4. e3 Bd6 5. Nbd2 c5 6. Bb5+ {D02: 1 d4 d5 2 Nf3 sidelines,
including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Nc6 $1 7. Bxc6+ $5 { A
promising side line.} bxc6 {[#]} 8. Bxd6 $146 {The position is equal.} ({
Predecessor:} 8. Ne5 Bb7 9. c3 Rc8 10. 0-0 0-0 11. Qf3 Qe7 12. Bg5 Kh8 13. Qh3 Qc7 14. f4 {0-1 (64) Pak,K-Karsiyaka,S Konya 2008} )Qxd6 9. Nb3 cxd4 10. exd4 Nd7 11. Qd2 0-0 12. Qc3 f6 13. 0-0-0 Ba6 14. Rhe1 Rfe8 15. Re3 Rac8 (15... e5 $11 )16. Rde1 Kf7 (16... Bc4 $1 $11 {remains equal.} )17. Nc5 $16 {Black is
now going downhill.} Nxc5 18. Qxc5 Qxc5 19. dxc5 Ra8 20. Nd4 { Double
Attack} e5 21. Nf5 $36 { White is in control.} ({Reject} 21. Nxc6 $6 Rec8 $11 )Red8 22. f4 Bc8 (22... e4 $16 )23. Nd6+ $18 Rxd6 (23... Ke6 $142 24. fxe5 f5 )24. cxd6 { Endgame KRR-KRB} e4 25. c4 Ke6 26. c5 Ba6 27. Ra3 Bb5 28. b4 {} Kf5 29. Ra5 Bc4 30. a4 a6 31. g4+ Kxf4 $2 {[#]} (31... Ke6 32. Kd2 g5 )32. b5 $1 {White is clearly
winning.} cxb5 33. c6 Ke5 34. c7 {d7 is the strong threat.} Ke6 {[#] Strongly
threatening ...bxa4.} 35. Rxa6 $1 { Weighted Error Value: White=0.05/
Black=0.34} 1-0

[Event "Airthings Masters KO 2020"]
[White "So,Wesley"]
[Black "Vachier-Lagrave,Maxime"]
[Site "Online"]
[Round "1.2"]
[Annotator "TA"]
[Result "1-0"]
[Date "2020.12.28"]
[WhiteElo "2770"]
[BlackElo "2784"]
[PlyCount "127"]

1. Nf3 {} Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qb3 Nb6 6. d4 Bg7 7. Bf4 {D90: Grünfeld: 4 Nf3 Bg7 sidelines.} Be6 8. Qa3 Nc6 9. e3 {
The position is equal.} 0-0 10. Be2 a5 11. Qc5 Nd5 12. Nxd5 Qxd5 13. Qc3 {[#]} a4 $146 ({Predecessor:} 13... Rfc8 14. 0-0 Qf5 15. a3 a4 16. Rac1 Bb3 17. Bg3 Qa5 18. Nd2 Bd5 19. Qd3 Rd8 {1-0 (38) Pultinevicius,P (2422)-Laurusas,T (2465)
Liepaja 2018} )14. 0-0 Qd7 15. b4 axb3 16. axb3 Bd5 17. b4 {
} Qf5 18. Bd3 Qd7 {White should prevent ...Rxa1.} 19. Rxa8 Rxa8 20. b5 Nd8 21. Qxc7 Qxc7 22. Bxc7 Ne6 23. Bg3 Ra3 24. Rd1 f5 25. Be5 Bxf3 ({Black
should play} 25... f4 $14 )26. gxf3 $16 {Bc4 is the strong threat.} Bxe5 27. dxe5 $14 { Endgame KRB-KRN} Rc3 28. f4 Nc5 29. Bf1 Kf7 30. Rd8 Ne4 31. Bd3 Nc5 32. Be2 Rc2 33. Bf1 Ne4 34. Bd3 Rc1+ 35. Kg2 Nc5 36. Bf1 Ne4 37. Rh8 h6 38. Rh7+ (38. Rxh6 $6 Kg7 $11 )Kf8 39. Rh8+ Kf7 $1 40. Bd3 (40. Rxh6 $6 Kg7 $11 )Nc5 {[#]} 41. Be2 Rc2 42. Bf3 Rb2 43. Rh7+ Kf8 44. Bd5 {
And now Rh8+ would win.} e6 45. Bc4 Rc2 46. Bf1 Ne4 47. Bd3 ({Much worse is} 47. Rxh6 Kg7 $11 )Rxf2+ 48. Kg1 Rf3 49. Rxb7 Rxe3 50. Bc4 g5 $2 {[#]} ({
Better is} 50... Re1+ $1 $14 51. Kg2 Rb1 )51. b6 $1 $18 {Strongly threatening
Rc7.} ({Less strong is} 51. Bxe6 Nc5 $14 )Re1+ 52. Kg2 {Hoping for Rc7.} Rb1 53. Bxe6 Rb2+ 54. Kg1 $2 ({Only move:} 54. Kf3 $18 )Nc5 $2 {} (54... Rb1+ $1 $11 {and Black has nothing to worry.} 55. Kg2 Rb2+ 56. Kf3 Rf2+ 57. Ke3 gxf4+ 58. Kd4 Rd2+ 59. Kc4 Rc2+ 60. Kb3 Rc6 61. Rf7+ Kg8 )55. Rb8+ Ke7 56. Bxf5 gxf4 57. Rc8 Na6 {[#]} (57... Rb5 58. Rc7+ Kd8 )58. Rc7+ $1 {
} Ke8 59. Rc8+ Ke7 60. Rc7+ $2 Kf8 $2 {} ({But not} 60... Nxc7 $2 61. bxc7 Rc2 62. Bxc2 $18 )(60... Ke8 $11 )61. Rc6 {White is clearly
winning.} f3 62. b7 Rxb7 63. Rxa6 f2+ 64. Kf1 {Weighted Error Value: White=0.
27/Black=0.20} 1-0

[Event "Airthings Masters KO 2020"]
[White "Radjabov,Teimour"]
[Black "Nepomniachtchi,Ian"]
[Site "Online"]
[Round "1.2"]
[Annotator "TA"]
[Result "1-0"]
[Date "2020.12.28"]
[WhiteElo "2765"]
[BlackElo "2784"]
[PlyCount "63"]

1. Nf3 {} c5 2. c4 Nc6 3. e3 Nf6 4. Nc3 e6 5. d4 d5 6. cxd5 Nxd5 7. Bd3 Be7 8. a3 cxd4 9. exd4 0-0 10. 0-0 b6 11. Qc2 Nf6 12. Rd1 {next d5! is
good for White.} h6 {D42: Queen's Gambit Declined: Semi-Tarrasch: 5 cxd5 Nxd5
6 e3 Nc6 7 Bd3 .} 13. d5 exd5 {[#]} 14. Nxd5 $1 Nxd5 {The position is equal.} (14... Qxd5 $2 15. Bh7+ $1 {} Nxh7 16. Rxd5 $18 )15. Qxc6 Be6 $1 16. Qa4 {[#]} Qc7 $146 ({Predecessor:} 16... Qd6 17. Qe4 Nf6 18. Qe2 Bd5 19. Be3 Rad8 20. Rac1 Ng4 21. Be4 Nf6 22. Bd3 Qb8 {1/2-1/2 (30) Szczepaniak,A (2267)
-Kolek,P (2197) ICCF email 2016} )17. Bd2 Rad8 18. Rac1 $40 { White
attacks.} Qb7 { A mistake that costs the game.} (18... Qd6 $11 {
and Black has nothing to worry.} )19. Qe4 $18 {} g6 20. Bxh6 Bf5 21. Qa4 Bxd3 22. Bxf8 ({Not} 22. Rxd3 Nf6 $16 )Be2 {[#]} 23. Bxe7 (23. Re1 $142 $1 b5 24. Qa5 Rxf8 25. Rxe2 )Bxd1 24. Rxd1 ({Don't do
} 24. Qxd1 $6 Qxe7 25. Qd4 Nf6 $16 )Qxe7 25. Qd4 b5 (25... Rd6 $16 26. g3 Qe6 )26. h4 Rd7 27. Ne5 Rd6 28. g3 a6 29. Ng4 {Strongly threatening Qc5.} Rd7 (29... Qe6 $16 30. f3 Qe2 31. Nh6+ Kf8 )30. Qe5 Qe6 (30... f5 31. Nh6+ Kh7 32. Qxe7+ (32. Rxd5 Qxe5 33. Rxe5 Kxh6 $16 )Rxe7 )31. Qxe6 fxe6 {[#]} 32. Rxd5 $1 { Weighted Error Value: White=0.12/Black=0.59} 1-0

[Event "Airthings Masters KO 2020"]
[White "Nakamura,Hikaru"]
[Black "Aronian,Levon"]
[Site "Online"]
[Round "1.2"]
[Annotator "TA"]
[Result "0-1"]
[Date "2020.12.28"]
[WhiteElo "2736"]
[BlackElo "2781"]
[PlyCount "73"]

1. Nf3 {} d5 2. g3 Nf6 3. Bg2 g6 4. d3 Bg7 5. Bd2 {[#]} Nc6 $146 ({Predecessor:} 5... 0-0 6. Qc1 Re8 7. 0-0 c5 8. c4 d4 9. Na3 Nc6 10. Nc2 e5 11. b3 e4 12. Nh4 Bd7 {0-1 (45) Pirttimaki,T (2285)-Oim,T (2567)
Finland 1995} )6. Qc1 {A07: Réti Opening: New York and Capablanca Systems.} e5 7. Bh6 Bxh6 8. Qxh6 {Black is slightly better.} Ng4 9. Qd2 e4 (9... f5 {
feels hotter.} 10. e3 Qe7 11. Nc3 Nf6 12. 0-0-0 Bd7 )10. dxe4 dxe4 11. Qxd8+ Nxd8 12. Nd4 f5 13. Nc3 Ne6 14. Nb3 Bd7 15. Bh3 Nf6 16. f3 exf3 17. exf3 0-0-0 18. Kf2 b6 19. Bf1 Bc6 20. Re1 Nd4 21. Ba6+ Bb7 22. Nxd4 Bxa6 23. Rd1 Rhe8 24. a4 Bb7 {Threatening ...Ng4+!} 25. a5 $2 { [#]} (25. Ncb5 $11 {
and White has nothing to worry.} Bd5 26. Rhe1 )Ng4+ $1 $19 {} 26. fxg4 {aiming for Rhe1.} Bxh1 27. axb6 axb6 ({Don't play} 27... cxb6 28. gxf5 gxf5 29. Nxf5 $17 )28. gxf5 gxf5 29. Nxf5 Rxd1 30. Nxd1 {
Endgame KRB-KNN} Be4 31. Nde3 Kd7 32. g4 (32. Nd4 $142 )Ra8 33. Ng3 Bg6 34. Ngf5 (34. Kf3 $142 )Bxf5 {Black is winning.} 35. gxf5 Kd6 36. Kf3 Ke5 37. Kg4 {Weighted Error Value: White=0.33/Black=0.09} 0-1

[Event "Airthings Masters KO 2020"]
[White "Dubov,Daniil"]
[Black "Carlsen,Magnus"]
[Site "Online"]
[Round "1.2"]
[Annotator "TA"]
[Result "1-0"]
[Date "2020.12.28"]
[WhiteElo "2699"]
[BlackElo "2862"]
[PlyCount "83"]

1. d4 {} Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Nbd2 0-0 6. Bg2 b6 {The main line 6...b6 scores better than 6...dxc4.} 7. 0-0 Bb7 8. Ne5 a5 {E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+.} 9. Qc2 a4 {[#]} 10. Rd1 $146 ({
Predecessor:} 10. Nd3 Be7 11. c5 Nc6 12. Nf3 Ne4 13. Be3 bxc5 14. Nxc5 Nxc5 15. dxc5 Bf6 16. Rad1 {0-1 (37) Vokoun,J (2217)-Rogule,L (2342) Pardubice 2006} )Bd6 {White is slightly better.} 11. cxd5 exd5 {[#]} 12. Ndc4 $1 h6 {[#]} (12... c6 13. Nxd6 )13. Bf4 $1 Re8 {[#]} (13... Na6 14. Ne3 )14. Rac1 $1 Na6 15. a3 Bf8 $1 $11 16. Ne3 c5 17. Nf5 cxd4 18. Nc6 $36 { Black is
under pressure.} (18. Rxd4 g5 $17 )(18. Qxa4 Nc5 $17 )Qd7 19. Bh3 (19. Nfxd4 Rac8 $17 )Kh8 $2 (19... Bxc6 $11 20. Qxc6 Qxc6 21. Rxc6 Rxe2 )20. Ne5 $18 (20. Ncxd4 g6 $15 )(20. Qxa4 $2 Nc5 $19 )(20. Rxd4 $2 Rac8 $19 )Rxe5 21. Bxe5 Ne4 22. Bxd4 {Strongly threatening Qxe4!} (22. Rxd4 $6 Nac5 $16 )Rc8 23. Qd3 Nac5 24. Qe3 {Qxh6+ is the strong threat.} Kh7 25. Bxc5 Nxc5 26. Qf3 (26. Qf4 $142 )d4 $16 27. Rxd4 Qe8 (27... Ne6 $16 28. Re1 (28. Rxd7 Rxc1+ 29. Kg2 Bxf3+ 30. exf3 Bc5 $16 )Nxd4 29. Nxd4 Qxh3 30. Qxb7 Bc5 )28. Qe3 Qc6 {} 29. f3 Re8 30. Qf2 (30. Qd2 $142 )g6 31. Ne3 {aiming for Bd7.} Qf6 32. Ng4 (32. Rcd1 $16 )Qg7 $1 $14 {[#]} 33. Rcd1 (33. Rb4 $1 $16 {} f5 {[#]} 34. Nxh6 $1 (34. Rxb6 fxg4 35. Bxg4 Nb3 $11 )(34. Ne3 Nb3 $14 ))h5 $11 34. Ne3 {Threatens to
win with Ng2.} Nb3 $1 {} 35. R4d3 (35. Rxa4 $2 Bc5 $17 )Qxb2 {And now ...Bc5 would win.} (35... Bc5 $5 36. Bd7 $8 { Double Attack} Rxe3 37. Rxe3 Qxb2 $11 )36. Rd7 Bc5 37. Rxf7+ (37. Rxb7 $2 Bxe3 38. Rxf7+ Kg8 $19 )Kh6 38. Rdd7 $1 {Rh7+ would kill now.} Qa1+ $2 {} ({
Worse is} 38... Bxe3 39. Rh7+ Kg5 40. f4+ Kf6 41. Rhf7# )(38... Qh8 $11 39. Kh1 (39. Rxb7 $2 Bxe3 40. Rh7+ Qxh7 $19 )Bxe3 )39. Kg2 $18 ({Stronger than} 39. Rd1 Qh8 $17 )Bxe3 40. Rh7+ {White mates.} Kg5 41. Rxb7 Rf8 42. Qxe3+ { Double Attack.  Weighted Error Value: White=0.18/Black=0.30} 1-0

[Event "Airthings Masters KO 2020"]
[White "Vachier-Lagrave,Maxime"]
[Black "Aronian,Levon"]
[Site "Online"]
[Round "2.1"]
[Annotator "TA"]
[Result "0-1"]
[Date "2020.12.30"]
[WhiteElo "2784"]
[BlackElo "2781"]
[PlyCount "134"]

1. e4 {} e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 Ne7 10. Nc3 Bd7 {C67: Ruy
Lopez: Berlin Defence: 4 0-0 Nxe4.} 11. b3 {[#]} Ke8 $1 $146 { A top
novelty.} ({Predecessor:} 11... Ng6 12. Bb2 Kc8 13. Rae1 h6 14. Nd2 Nf4 15. Ne2 Bb4 16. c3 Nxe2+ 17. Rxe2 Be7 18. c4 {1/2-1/2 (52) Vachier Lagrave,M (2774)
-Jakovenko,D (2681) Khanty-Mansiysk 2019} )12. Re1 Nd5 {The position is equal.} 13. Ne4 (13. Ne2 {looks sharper.} Bb4 14. Rf1 Nc3 15. Ng3 c5 16. a3 )Bb4 14. Bd2 (14. Nfd2 {with more complications.} Bf5 15. a3 Bxe4 16. Rxe4 Bc3 17. Rb1 )Bxd2 15. Nfxd2 Nb4 16. Rec1 Rd8 17. a3 Nd5 18. Re1 Ke7 19. Kh2 h5 20. Nf3 Nf4 21. Rad1 Bc8 22. Nd4 h4 23. Ng5 (23. Nc5 $11 )c5 24. Nb5 Rxd1 25. Rxd1 Rh5 26. Nf3 Bd7 $36 { Black is on the roll.} 27. Nxa7 c6 28. b4 cxb4 29. axb4 Ng6 30. Re1 Kd8 31. b5 Kc7 $1 32. bxc6 (32. Rd1 $17 )bxc6 $19 33. c4 Kb7 34. Rd1 Bf5 (34... Be6 $19 35. Ra1 Bxc4 )35. Nxc6 Kxc6 36. Rd5 Be6 37. Rb5 (37. Nd4+ {was necessary.} Kc7 38. Ra5 )Kc7 ({Worse is} 37... Bxc4 38. Nd4+ Kc7 39. Rc5+ Kb7 40. Rxc4 $14 )38. Rc5+ Kd7 39. Ra5 Rf5 40. Ra7+ Kc8 41. Ra8+ Kc7 42. Rg8 Nxe5 43. Nxh4 Rxf2 {aiming for ...g6.} 44. Rxg7 Kd6 45. Rg5 Nxc4 46. Nf3 (46. Kg3 $142 Re2 47. Kf3 )Bd5 47. Kg1 Rb2 48. Rg3 $2 (48. Nh4 )Rb1+ 49. Kf2 Rb2+ (49... f5 $142 50. Rg6+ Ke7 )50. Kg1 Nd2 51. Nxd2 Rxd2 { Endgame KRB-KR} 52. Rg4 f5 53. Rg6+ Ke5 54. Kh2 Be4 (54... f4 $142 55. Kg1 Kf5 56. Rg7 Be6 57. Ra7 Rd3 58. Rc7 Rg3 59. Rc2 Bd5 60. Rd2 Ke4 61. Kf1 Rb3 62. Kg1 Rg3 63. Kf1 Ra3 64. Re2+ Kd3 65. Kf2 Bxg2 $1 {
} 66. Rb2 Be4 67. h4 Ra1 68. h5 Rh1 69. Rb3+ Kc4 70. Rb6 Rh2+ 71. Kf1 f3 72. Rd6 Bd3+ 73. Kg1 f2+ 74. Kxh2 f1=Q 75. Kg3 Qe1+ 76. Kh3 Qe3+ 77. Kg4 Qe2+ 78. Kf4 Qe4+ 79. Kg3 Qe5+ { Double Attack} 80. Kg2 Qxd6 81. Kf3 Qf6+ 82. Ke3 Qf1 83. h6 Bh7 84. Kd2 Qf2+ 85. Kd1 Kd3 86. Kc1 Qc2# )55. Kg1 Kf4 56. Rg8 Ke3 57. Rg3+ Ke2 (57... Kd4 $142 58. h4 f4 59. Rg7 Ke3 60. h5 Rd1+ 61. Kh2 Rd5 62. Kg1 Rd1+ 63. Kh2 Kf2 64. Ra7 Rd5 65. Ra2+ Ke3 66. h6 Rh5+ { Double Attack} 67. Kg1 Bd3 68. Ra1 Rxh6 69. Ra3 Ra6 70. Rb3 Rg6 71. Kh2 Rg3 72. Rb8 Be4 73. Rb3+ Kf2 74. Rb2+ Kf1 75. Ra2 Bd3 76. Rb2 Be2 77. Rb1+ Kf2 78. Rb6 Rxg2+ 79. Kh3 f3 80. Rb3 Ke1 81. Rb1+ Bd1 82. Rb4 {[#]} f2 $1 {} 83. Re4+ Be2 84. Kxg2 f1=Q+ 85. Kg3 Qf3+ 86. Kh4 Qxe4+ 87. Kg5 Qe6 88. Kf4 Kf2 89. Kg5 Ke3 90. Kh4 Qg4# )58. Rg7 Rd1+ 59. Kh2 Kf2 60. Ra7 Rd2 61. Ra5 Kf1 (61... f4 $142 62. Ra4 Ke3 63. Ra3+ Kd4 64. Ra4+ Ke5 65. Ra5+ Bd5 66. Kh1 Kd4 67. Ra4+ Ke3 68. Ra3+ Kf2 69. Kh2 Bxg2 70. h4 Be4 71. h5 Bf5 72. Kh1 Bd3 73. Kh2 Ke3+ 74. Kh3 f3 75. Kh4 Rg2 76. Kh3 Rg1 77. Ra8 f2 78. Re8+ Kf4 79. Rf8+ Bf5+ 80. Rxf5+ Kxf5 81. Kh4 Rg4+ 82. Kh3 f1=Q+ 83. Kh2 Qg2# )62. Ra1+ Kf2 (62... Ke2 $19 63. h4 Ke3 64. Ra3+ Kd4 )63. Ra5 $1 f4 {Black mates.} 64. Ra4 Ke3 65. Ra3+ Kd4 66. Ra4+ Ke5 67. Ra5+ Bd5 {Weighted Error Value: White=0.61/
Black=0.38} 0-1

[Event "Airthings Masters KO 2020"]
[White "Aronian,Levon"]
[Black "Vachier-Lagrave,Maxime"]
[Site "Online"]
[Round "2.1"]
[Annotator "TA"]
[Result "1-0"]
[Date "2020.12.30"]
[WhiteElo "2781"]
[BlackElo "2784"]
[PlyCount "114"]

1. d4 {} Nf6 2. Nf3 g6 3. c4 b6 4. Nc3 Bb7 5. d5 Bg7 6. e4 0-0 7. Be2 d6 8. 0-0 Nbd7 {E91: King's Indian: Classical: 6 Be2, unusual
replies including 6...c5 and 6...Bg4.} 9. Be3 e6 10. Nd2 Re8 {[#] The position
is equal.} 11. Qc2 $146 ({Predecessor:} 11. Rc1 Qe7 12. Bg5 Qf8 13. f4 a6 14. Bf3 Nc5 15. Qc2 exd5 16. cxd5 a5 17. Nb5 {1-0 (29) Khedkar,J (1814)-Prince,C 
(1829) Winnipeg 2006} )c6 12. dxe6 fxe6 13. f4 Qe7 14. Rae1 Rad8 15. Kh1 e5 16. f5 gxf5 $1 17. Rxf5 Nf8 18. Ref1 Bc8 19. R5f2 Ne6 20. Qa4 Bd7 $1 21. Qd1 (21. Qxa7 $2 Ra8 $19 )Rf8 22. h3 Be8 23. Bg4 Bg6 24. Bf5 Nh5 {
Threatening ...Ng3+.} 25. Qg4 Nhf4 26. Bxf4 Nxf4 27. Bxg6 $1 hxg6 28. g3 Nd3 29. Rf3 $36 { White has good play.} Rxf3 30. Rxf3 Ne1 (30... Nxb2 $14 31. Qxg6 Rf8 )31. Rf1 $16 Nc2 32. Qxg6 Rf8 33. Rxf8+ Qxf8 34. Qe6+ Kh8 {
[#] aiming for ...Nd4.} 35. Qf5 Qe8 36. h4 Nd4 37. Qg4 (37. Qg5 $16 )Qf7 38. Kg2 Bh6 39. Nf3 Nc2 $2 ({Black should try} 39... Qxc4 $14 40. Qd7 Qd3 )40. Qc8+ $18 Kh7 {[#]} 41. Qxc6 $2 (41. b3 $1 $18 )Qxf3+ $1 $11 {
Remove Defender, Decoy} 42. Kxf3 Nd4+ { Double Attack} 43. Kg4 {
White wants to mate with Qe8.} Nxc6 44. Kf5 Nd4+ 45. Kf6 Bd2 46. Nd5 (46. Ke7 {
feels hotter.} Bc1 47. Nd1 Ne2 48. g4 Nf4 49. Kxd6 Nd3 50. b3 )Be1 47. Ke7 Bxg3 {Strongly threatening ...Nf3.} 48. Kxd6 Nf3 49. Ne7 Bf2 50. b4 Kg7 (50... Nxh4 $6 51. c5 $16 )51. c5 bxc5 $1 ({Don't go for} 51... Bxh4 $2 52. c6 $18 )52. bxc5 {Hoping for c6.} Kf7 $2 {} (52... Nd2 $1 $11 53. c6 Nxe4+ 54. Kxe5 Nc5 )53. c6 $18 {Black must now prevent c7.} Bb6 (53... Nd4 54. h5 (54. c7 Nb5+ 55. Kd7 Nxc7 $17 )Be1 )54. Nd5 {White is clearly winning.
} Ba5 55. c7 Bxc7+ 56. Nxc7 ({Not} 56. Kxc7 Nxh4 57. Kd6 Nf3 $16 )Nxh4 57. Kxe5 Ke7 {Weighted Error Value: White=0.19/Black=0.30} 1-0

[Event "Airthings Masters KO 2020"]
[White "Radjabov,Teimour"]
[Black "Dubov,Daniil"]
[Site "Online"]
[Round "2.1"]
[Annotator "TA"]
[Result "1-0"]
[Date "2020.12.30"]
[WhiteElo "2765"]
[BlackElo "2699"]
[PlyCount "163"]

1. Nf3 {} d5 2. d4 Nf6 3. c4 e6 4. Nc3 c6 5. cxd5 exd5 6. Qc2 Na6 {} 7. a3 Nc7 8. Bg5 Ne6 9. Bh4 Be7 10. e3 g6 11. Bd3 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6
6 Qc2).} Ng7 12. 0-0 Bf5 13. b4 {The position is equal.} a6 14. a4 $5 {
Leaves trodden paths.} Bxd3 15. Qxd3 Nf5 16. Bxf6 Bxf6 17. b5 axb5 18. axb5 0-0 {[#]} 19. Rfc1 $146 ({Predecessor:} 19. bxc6 bxc6 20. Na4 Qd6 21. g3 Rfb8 22. Nc5 h5 23. Qc2 Bg7 24. Nd3 Rxa1 25. Rxa1 {1-0 (38) Padurariu,C (1780)-Olariu,D
(1900) Sovata 2001} )Nd6 20. g3 Re8 21. bxc6 {Rxa8 is the strong threat.} bxc6 22. Ra6 Qd7 23. Nd2 Rec8 24. Na4 Rxa6 25. Qxa6 {And now Nb6 would win.} Qe8 26. Nb6 Rd8 27. Na4 Rc8 28. Nc5 Ra8 29. Qb6 Bd8 30. Qb1 h5 31. Nd3 Bf6 32. Qc2 Rc8 33. h4 Kg7 34. Kg2 Ne4 35. Nf3 Qe6 (35... Nd6 $11 )36. Qa4 Be7 (36... Qd7 $14 )37. Nf4 Qd6 38. Qa6 Rc7 39. Ne5 {} c5 40. Qxd6 Bxd6 41. Nxd5 Ra7 42. Nc4 {aiming for Kf3.} cxd4 43. exd4 (43. Kf3 $142 f5 44. exd4 )Ra2 44. Nc3 (44. Kf3 {seems wilder.} Nd2+ 45. Nxd2 Rxd2 46. Ke3 Rb2 47. Rc6 )Nxc3 ({Don't blunder} 44... Rxf2+ $2 45. Kg1 $18 )45. Rxc3 $16 {
 Endgame KRB-KRN} Be7 46. Rd3 Ra4 47. Nb6 Ra2 48. Nd5 Bd6 49. Ne3 Ra4 50. Kf3 Kf6 51. Nd5+ Kf5 52. Nc3 Ra3 {White must now prevent ...Bb4.} 53. Re3 Ra1 54. Nb5 Ra6 (54... Bb4 $142 )55. Re8 Rb6 56. Nc3 (56. Nxd6+ $16 Rxd6 57. Ke3 )Rb3 $14 57. Re3 Rb4 58. Rd3 Ke6 59. Ne4 Kd5 60. Ke3 Bf8 61. Ra3 Bg7 62. Ra5+ Kc6 63. Rc5+ (63. d5+ $16 Kb7 64. Kf3 )Kb6 64. Rd5 (64. Rc8 {with more complications.} Bxd4+ 65. Kd3 Ka5 66. Rc2 f6 67. Nc3 )Kc6 $1 {
} 65. Rd6+ Kc7 66. Rd5 Kc6 $1 {} 67. Rc5+ (67. Rd8 {
is interesting.} Kc7 68. Rd5 )Kb6 68. Rc2 Bxd4+ 69. Kf3 Rb3+ 70. Kg2 f6 71. Rd2 Be5 {[#]} ({Better is} 71... Rb4 )72. Nxf6 $1 $16 { Strongly
threatening Nd7+.} Kc6 73. Ne4 Rb4 {[#]} 74. Ng5 $1 Bf6 (74... Rb8 $16 75. Nf7 Bc7 )75. Ne6 $18 Rb8 (75... Be5 {keeps fighting.} 76. Re2 Rb5 )76. Nf4 Rg8 77. Re2 Kd7 78. Re6 Rf8 {Now ...g5 and Black clings on.} 79. Ra6 g5 $2 (79... Bd8 80. Nxg6 Re8 )80. Ng6 {White is clearly winning.} Rf7 81. hxg5 Bd4 82. f4 {
Weighted Error Value: White=0.10/Black=0.10} 1-0

[Event "Airthings Masters KO 2020"]
[White "Dubov,Daniil"]
[Black "Radjabov,Teimour"]
[Site "Online"]
[Round "2.1"]
[Annotator "TA"]
[Result "0-1"]
[Date "2020.12.30"]
[WhiteElo "2699"]
[BlackElo "2765"]
[PlyCount "106"]

1. e4 {} c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 a6 7. Na3 b5 8. Nd5 Nf6 9. Bg5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. Nc2 Rb8 13. h4 {B33: Sicilian: Pelikan and Sveshnikov Variations.} ({Better is
} 13. a4 $14 )Bh6 (13... Bxh4 $15 14. g3 Bg5 )14. Be2 0-0 15. Bg4 {
The position is equal.} Be6 {[#]} 16. Kf1 $146 ({Predecessor:} 16. Ncb4 Nxb4 17. Nxb4 Qb6 18. 0-0 a5 19. Nd3 d5 20. Bxe6 Qxe6 21. Re1 Rbd8 {1-0 (62)
Sokolov,A (2632)-Calistri,T (2382) Montpellier 2006} )Qd7 17. Bf5 Kh8 18. Qh5 Bxf5 (18... b4 {with more complications.} 19. cxb4 Qa7 20. a3 Nd4 21. Nxd4 Qxd4 22. Rh3 Qxb2 23. Qd1 Rbc8 )19. exf5 f6 20. Rd1 a5 21. Rh3 Rbe8 22. Rhd3 (22. Na3 $14 )e4 $11 23. Nxf6 Rxf6 $17 24. Rxd6 Rxf5 (24... Rxd6 $17 25. Rxd6 Qc8 )25. Rxc6 $1 $11 {[#]} Rxf2+ $1 26. Kxf2 Qxc6 27. Kg1 b4 {
Decoy} 28. cxb4 axb4 29. Nxb4 Qb6+ 30. Kh1 {} Rf8 31. a3 (31. Nc2 $1 $11 {remains equal.} )e3 (31... Qf2 $17 {...Bf4 is the strong threat.} 32. Qg4 Bf4 )32. Qe5 Qg6 $36 { aiming for ...Qg4! Black is pushing.} (32... Bf4 $5 33. Rf1 $8 Qf6 34. Qxf6 Rxf6 $11 )33. Nd5 $1 {} Qc2 34. Rg1 {} (34. Rd4 $1 $11 )Qf2 $19 35. Qe7 $2 (35. Nc3 Qxh4+ 36. Qh2 )e2 36. Nc3 {[#]} Bg5 $1 {} 37. Qxg5 {Hoping for Nxe2.} e1=Q 38. Rxe1 Qxe1+ { Endgame KQR-KQN} 39. Kh2 h6 {
Black has strong compensation.} 40. Qg3 Qc1 41. Qd6 Rf1 (41... Rc8 $19 42. Qb4 Qd2 )42. Qd8+ $11 Kh7 {( -> ...Qf4+)} 43. Qd3+ Kh8 {Threatens to win with ...
Rh1+.} 44. Ne4 $2 {} (44. Qd8+ $11 Kh7 45. Qd3+ Kg8 46. Qd5+ Rf7 47. Kh3 )Rh1+ $19 45. Kg3 Qxb2 46. Qd8+ (46. Qd6 {only move.} Qb3+ 47. Kg4 )Kh7 {And now ...Qe5+ would win.} 47. Qd3 {White threatens Ng5+! and mate.
} Qe5+ {Black is clearly winning.} 48. Kg4 {Threatening mate with Nf6+!} Qe6+ 49. Kf4 {White wants to mate with Nf6+!} Rxh4+ 50. Ke3 (50. Kf3 $142 Qf5+ 51. Ke3 )Rg4 51. Kf3 Qf5+ 52. Ke3 Qf4+ 53. Kd4 Qd6+ {Weighted Error Value:
White=0.93/Black=0.44} 0-1

[Event "Airthings Masters KO 2020"]
[White "Vachier-Lagrave,Maxime"]
[Black "Aronian,Levon"]
[Site "Online"]
[Round "2.2"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2021.01.01"]
[WhiteElo "2784"]
[BlackElo "2781"]
[PlyCount "129"]

1. e4 {} e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 Ke8 10. Nc3 h5 {C67: Ruy Lopez: Berlin Defence: 4 0-0
Nxe4.} 11. Bf4 Bb4 12. Ne2 Be6 {With the idea ...Bc4.} 13. Ned4 Nxd4 14. Nxd4 {
[#]} Bd5 $146 ({Predecessor:} 14... Bc5 15. Nxe6 fxe6 16. g3 Rf8 17. h4 Rd8 18. Kg2 Rf7 19. Rad1 Rfd7 20. Rxd7 Rxd7 {1/2-1/2 (69) Sutovsky,E (2635)-Ivanchuk,V
(2726) Skopje 2015} )15. a3 Be7 16. Rfe1 g5 17. Bg3 Rh6 18. Rad1 Rg6 19. e6 fxe6 20. Bxc7 Rc8 21. Be5 Rd8 22. b3 c5 23. Nb5 a6 24. Nc3 Bc6 25. Rxd8+ Kxd8 26. Ne4 g4 27. hxg4 hxg4 28. c4 Ke8 29. Nd6+ Kf8 30. Nc8 (30. a4 {looks
sharper.} Rg8 31. Kh2 Rg5 32. Bg3 Rh5+ 33. Kg1 )Kf7 31. Nxe7 Kxe7 $14 {
 Endgame KRB-KRB} 32. Kh2 Rg8 33. Rd1 Rg5 34. Bf4 Rg7 35. Be5 Rg5 36. Bd6+ Kf6 37. Kg3 Rf5 38. Rh1 Be4 39. Rh6+ Kf7 40. Rh7+ ({Much weaker is} 40. Kxg4 Rxf2 41. g3 (41. Bxc5 Rxg2+ 42. Kf4 Bc2 $11 )Rf3 $11 )Kf6 41. Rc7 Bc6 42. Rh7 ({Don't play} 42. Kxg4 $6 Rxf2 43. g3 Bf3+ 44. Kf4 Bc6+ 45. Kg4 Be4 $11 )Be4 $1 43. Rc7 Bc6 $1 44. Rc8 ({But not} 44. Kxg4 $6 Rxf2 45. g3 Rb2 $11 )Kg7 45. Rd8 Be4 46. Re8 Kf6 47. Rg8 Bc2 48. b4 cxb4 49. Bxb4 Be4 50. Rxg4 Bc6 51. f3 e5 52. Rh4 Kg6 53. Bc3 Kf7 54. Bd2 e4 {} 55. f4 e3 56. Bxe3 Ra5 57. Bc1 Rc5 58. f5 Rxf5 59. Rd4 Ke6 {The
position is equal.} 60. Rd3 (60. Bf4 {feels hotter.} Ra5 61. Rd3 Rc5 62. Rc3 b5 63. Re3+ )Rc5 61. Rc3 b5 62. Re3+ Kf7 63. cxb5 axb5 64. Bd2 Rg5+ 65. Kf4 {Weighted Error Value: White=0.08/Black=0.04} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Aronian,Levon"]
[Black "Vachier-Lagrave,Maxime"]
[Site "Online"]
[Round "2.2"]
[Annotator "TA"]
[Result "1-0"]
[Date "2021.01.01"]
[WhiteElo "2781"]
[BlackElo "2784"]
[PlyCount "225"]

1. d4 {} Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Bf4 Nxc3 6. bxc3 c5 {
D80: Grünfeld: Unusual White 4th moves and 4 Bg5.} 7. cxd5 Qxd5 8. e3 cxd4 {
The position is equal.} 9. Qxd4 Qxd4 10. cxd4 Nc6 11. Nf3 {[#]} e6 $146 ({
Predecessor:} 11... Bg7 12. Be2 0-0 13. Rb1 a6 14. a4 Re8 15. 0-0 e5 16. dxe5 Nxe5 17. h3 Bd7 18. Rxb7 Bxa4 19. Nxe5 Bxe5 {1-0 (59) Boelker,F (1823)
-Klueppel,R (1714) Germany 2010} )12. Rb1 f6 13. h4 Bb4+ 14. Kd1 Be7 15. Bc4 Na5 16. Bd3 Bd7 17. Ke2 0-0 18. e4 Rac8 19. Bd2 b6 20. Bxa5 bxa5 21. Rb7 $36 {
 Double Attack. White is really pushing.} Rfd8 22. Rxa7 Rb8 (22... Ra8 $16 {was called for.} 23. Rb7 Ba3 )23. Rc1 $18 Rb2+ 24. Rc2 Rxc2+ 25. Bxc2 Bb4 26. Bb3 Kf8 27. e5 fxe5 28. Nxe5 Be8 29. Ke3 ({Inferior is} 29. Bxe6 Rxd4 30. Kf3 Bd6 $11 )Bc3 30. Nf3 Bd7 (30... Bc6 $16 31. Rxh7 Bxf3 )31. Rc7 Bb2 32. Ng5 h6 33. Nh7+ ({Resist} 33. Bxe6 $6 Bxd4+ 34. Ke4 hxg5 $14 )Ke8 34. Bc2 Rc8 35. Nf6+ Ke7 36. Rxc8 Bxc8 $16 { Endgame KBB-KBN} 37. Ng4 h5 38. Ne5 Bc1+ 39. Ke2 g5 40. hxg5 Bxg5 41. f4 Bf6 42. g3 Bb7 43. Ke3 ({
Better is} 43. Bb3 )Bd5 44. a4 Kd6 45. Nf7+ Ke7 46. Ng5 Bc6 47. Bd1 Bg7 48. Nf3 Bf6 49. Ne5 { Discovered Attack} Be8 50. Nc4 h4 51. gxh4 Bxh4 52. Nxa5 Be1 53. Nb7 {Strongly threatening a5.} Bc6 54. Nc5 Bb4 55. Bf3 Be8 56. Be2 Bc6 57. Bf3 Be8 58. Kd3 Kf6 $2 {} (58... Ba5 $16 59. Bg4 Bf7 )59. Kc4 $1 $18 {} Ba5 60. Bg4 Ke7 61. Kd3 ({Weaker is} 61. Nxe6 Bxa4 62. f5 Bd2 $16 )(61. Bxe6 $18 {and the rest is easy.} Bxa4 62. Nxa4 Kxe6 63. Nc3 )Bb6 62. Bd1 Bc7 63. Ke3 Ba5 (63... Bc6 $16 64. Bf3 Be8 )64. Bb3 Bb4 65. Ke4 {Hoping for Ke5.} Kf6 66. Bc4 (66. Kd3 $16 )Bc6+ $1 $11 67. Ke3 {aiming for Bb5.} Ke7 (67... Bxc5 $11 {keeps the balance.} 68. dxc5 Bxa4 )68. Bb5 Bd5 69. Nd3 Ba5 70. Ne5 Bc7 (70... Kd6 $16 {keeps fighting.} 71. Bc4 Bb6 )71. Kd3 Kf6 72. Bc6 Bb3 73. Nd7+ Kf5 (73... Ke7 $18 74. Nc5 Ba2 )74. Nc5 Ba2 75. Kc3 ({White should play} 75. Na6 $16 Bd8 76. Ke3 )Kxf4 76. Kb2 Bc4 $1 77. Kc3 Ba2 78. Nb7 Bb6 $2 { Black is now going downhill.} (78... Ke3 $11 )79. a5 $18 Ba7 $2 (79... Bc7 80. a6 Bb6 )80. Nd6 $1 {} e5 81. d5 {} e4 {[#]} 82. Nxe4 $1 {} Ke5 83. d6 Be6 {[#]} 84. Kd3 $1 {White mates.} Bb8 85. d7 Bc7 86. a6 Bxd7 87. Bxd7 Bb6 88. Bc6 Bg1 89. Kc4 Ba7 90. Nc3 Bb6 91. Nb5 Ke6 92. a7 Bxa7 93. Nxa7 Kd6 94. Bd5 Ke5 95. Kc5 Kf5 96. Kd4 Kf4 97. Nc6 Kf5 98. Ne5 Kf6 99. Be4 Ke6 100. Nc4 Kf6 101. Kd5 Ke7 102. Bf5 Kf6 103. Ke4 Ke7 104. Ke5 Kf7 105. Nd6+ Kg7 106. Ke6 Kg8 107. Kf6 Kh8 108. Nf7+ Kg8 109. Bg6 Kf8 110. Bh7 Ke8 111. Ne5 Kd8 112. Ke6 Kc7 113. Nd7 {Weighted Error Value: White=0.09/Black=0.16} 1-0

[Event "Airthings Masters KO 2020"]
[White "Radjabov,Teimour"]
[Black "Dubov,Daniil"]
[Site "Online"]
[Round "2.2"]
[Annotator "TA"]
[Result "1-0"]
[Date "2021.01.01"]
[WhiteElo "2765"]
[BlackElo "2699"]
[PlyCount "95"]

1. Nf3 {} Nf6 2. c4 b6 3. d4 Bb7 4. g3 g6 5. Bg2 Bg7 6. 0-0 0-0 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Be3 c5 {
A50: Queen's Fianchetto Defence (1 d4 Nf6 2 c4 b6).} 10. Qd2 d6 11. Bh6 Nd7 {
 The position is equal.} 12. Rfd1 Nf6 13. Bxg7 Kxg7 14. Rac1 Qc7 15. Nh4 {[#]} Rab8 $146 ({Predecessor:} 15... Bxg2 16. Nxg2 Qb7 17. Nf4 cxd4 18. Nd5 Nxd5 19. cxd5 Qxd5 20. Qxd4+ Qxd4 21. Rxd4 Rfc8 {
0-1 (60) Bellia,F (2444)-Short,N (2688) Abu Dhabi 2017} )16. Bxe4 Nxe4 17. Qe3 Nf6 18. Qg5 Kh8 (18... e6 {is more complex.} 19. Qd2 Qe7 20. Ng2 Rbd8 21. Qc2 h5 )19. Qh6 Rfc8 20. Nf3 Kg8 21. b3 a6 22. Ng5 Qd8 23. Nf3 (23. e4 $5 {} Qf8 24. Qxf8+ Rxf8 25. e5 dxe5 26. dxe5 $14 )Qd7 24. Kg2 Qe6 25. Rd2 Qe4 26. Kf1 (26. h3 $142 )Rc7 $11 27. Rd3 Qf5 28. Kg2 Qe4 29. Kf1 Rbc8 30. d5 b5 {[#]} (30... Ng4 $11 31. Qxh7+ { Decoy} Kxh7 32. Ng5+ {
 Double Attack} Kg7 33. Nxe4 Nxh2+ 34. Kg2 Ng4 )31. h3 $1 $16 Rb8 {[#]
} 32. g4 $1 {Strongly threatening Re3.} e5 33. dxe6 $1 Qxe6 34. Qf4 Ne8 35. Re3 Qd7 36. Ng5 d5 37. cxd5 Qxd5 {} 38. Kg1 c4 39. bxc4 bxc4 40. Ne4 Rcb7 {[#]} (40... Qd8 $16 )41. Rxc4 $3 $18 {} Rb1+ (41... f5 42. gxf5 )42. Kh2 Qd1 {} 43. Kg3 h5 $2 (43... R1b5 44. Rf3 Qd7 )44. Rf3 f5 (44... h4+ 45. Kxh4 Qd8+ 46. Kg3 Qe7 )45. gxf5 Qh1 46. Kh4 {White
mates.} ({Not} 46. fxg6 $2 Rg1+ 47. Kh4 Rg4+ 48. Qxg4 hxg4 $19 )Rg1 47. Rg3 Rb5 48. Rc8 {Weighted Error Value: White=0.14/Black=0.44} 1-0

[Event "Airthings Masters KO 2020"]
[White "Dubov,Daniil"]
[Black "Radjabov,Teimour"]
[Site "Online"]
[Round "2.2"]
[Annotator "TA"]
[Result "0-1"]
[Date "2021.01.01"]
[WhiteElo "2699"]
[BlackElo "2765"]
[PlyCount "126"]

1. Nf3 {Krasenkow,M} Nf6 2. c4 e6 3. Nc3 d5 4. d4 Be7 5. g4 0-0 6. g5 {D37: Queen's Gambit Declined: 5 Bf4.
} Ne4 {[#]} 7. Bg2 $146 ({Predecessor:} 7. Qc2 Nxg5 8. Bxg5 Bxg5 9. h4 Bh6 10. e3 c6 11. Ng5 f5 12. Rg1 Qe7 13. 0-0-0 {1/2-1/2 (43) Mamedyarov,S (2761)
-Ponomariov,R (2734) Dortmund 2010 CBM 138 [Krasenkow,M]} )c5 8. dxc5 {
The position is equal.} Nxc3 9. bxc3 Bxc5 10. h4 Nc6 11. h5 dxc4 12. Qc2 (12. Qxd8 $11 Rxd8 13. Nd2 )e5 13. Rb1 Bb6 (13... f5 $17 14. gxf6 Qxf6 )14. Nh4 (14. Ba3 $14 )f5 $11 15. gxf6 (15. Ba3 $11 {keeps the balance.} )Qxf6 $17 16. e3 Be6 17. Be4 Qh6 18. Ba3 Rf7 ({Avoid the trap} 18... Qxh5 $2 19. Bxf8 Rxf8 20. Ng6 $1 $18 {} )19. Qe2 (19. Rd1 $17 )Rd8 (19... Ba5 $1 $19 20. Kf1 Bxc3 )20. Rg1 (20. Rd1 $1 $15 )Qf6 (20... Ba5 $19 21. Bb4 Bxb4 22. cxb4 c3 )21. Nf3 {Ng5 would now be nice for White.} Bd5 (21... Ba5 $1 $17 22. Rc1 Rfd7 )22. Bxd5 (22. Ng5 $11 Bxe4 23. Nxe4 )Rxd5 23. Ng5 Qf5 ({Black should try} 23... e4 $1 $17 24. Nxf7 Qxf7 )24. Rc1 (24. Rxb6 $1 $11 Rfd7 25. Rb2 )Rf6 $36 { Black is in control.} 25. Rg2 $2 {} (25. Rc2 $17 {is more resistant.} )Rd3 {Threatens
to win with ...Bxe3!} 26. Qg4 {[#]} Rxe3+ $1 {} 27. Kf1 Qxg4 28. Rxg4 Rd3 29. Rc2 h6 30. Ne4 Rf4 31. Rxf4 exf4 32. Kg2 Rd5 33. Bd6 Rxh5 34. Bxf4 Rd5 35. Re2 (35. Rb2 {is a better defense.} )Kh7 36. Nd2 Ba5 37. Nxc4 Bxc3 38. Nd6 b6 39. Rc2 {[#]} Nd4 $1 40. Rxc3 Ne2 $1 {
Double Attack} 41. Rc6 Nxf4+ $19 { Endgame KRN-KRN} 42. Kf3 Nd3 43. Ke4 Nb4 44. a3 $2 {[#]} (44. Nc8 {was called for.} )Rd4+ $3 {} 45. Kxd4 Nxc6+ {KN-KN} 46. Kd5 Na5 47. Nc8 h5 48. Nxa7 h4 {White must now
prevent ...h3.} 49. Ke4 Nc4 (49... Kh6 $142 50. Kf3 Kh5 )50. Kf4 $2 {[#]} (50. Kf3 )g5+ $2 (50... Ne5 $1 $19 { And now ...g5+! would win.} 51. f3 g5+ 52. Ke3 Nc4+ 53. Ke2 Nxa3 )51. Kg4 $17 Ne5+ 52. Kh3 Kg6 {aiming for ...
Kh5.} 53. Nc8 Nc4 $1 {Strongly threatening ...b5.} 54. Kg4 b5 $1 55. f4 $1 Ne3+ ({Of course not} 55... Nxa3 $6 56. fxg5 Kh7 57. Nb6 $11 )56. Kf3 $2 { [#]} (56. Kh3 $15 )h3 $1 { Black mates.} 57. Kg3 {[#]} g4 $1 58. Ne7+ Kf6 59. Nc6 Nf1+ 60. Kf2 {[#]} h2 $1 61. Kg2 {[#]} g3 $1 62. Ne5 (62. Nd4 Ne3+ )Ne3+ 63. Kh1 Nd1 {Weighted Error Value: White=0.52/
Black=0.31} 0-1

[Event "Airthings Masters KO 2020"]
[White "Vachier-Lagrave,Maxime"]
[Black "Dubov,Daniil"]
[Site "Online"]
[Round "3.1"]
[Annotator "TA"]
[Result "1-0"]
[Date "2021.01.01"]
[WhiteElo "2784"]
[BlackElo "2699"]
[PlyCount "101"]

1. e4 {} e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. Nc3 d6 6. a4 0-0 7. 0-0 {is the legacy move (7.a5).} h6 8. h3 Be6 {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack.} 9. Re1 Nxe4 { Remove Defender, Decoy} 10. Nxe4 d5 {White is slightly better.} 11. Bb5 dxe4 12. Bxc6 bxc6 13. Nxe5 {[#]} exd3 $146 ({Predecessor:} 13... Bd6 14. Rxe4 Bd5 15. Re1 Re8 16. Ng4 Rxe1+ 17. Qxe1 Qd7 18. Bd2 Re8 19. Qd1 Qf5 {
1/2-1/2 (35) Gurevich,V (2484)-Wemmers,X (2354) Belgium 2014} )14. Nxc6 dxc2 15. Qxc2 Qd7 16. Bf4 Bf6 17. Rac1 Bd5 18. b4 {} a6 19. Red1 {White wants to play b5.} Rfe8 20. b5 {Nb4 is the strong threat.} Qe6 $1 {White must now prevent ...Bb3.} 21. Qd2 $36 { White has some
pressure.} ({Much worse is} 21. Bxc7 Bb3 $17 )Bxc6 22. Rxc6 Qf5 {And now
...Rad8 would win.} 23. Bxc7 {Threatens to win with b6.} ({But not} 23. Rxa6 $2 Rad8 $19 )({Not} 23. bxa6 $2 Red8 $19 )axb5 24. a5 Re6 (24... Qe4 $11 25. Qd5 b4 )25. Rxe6 $14 Qxe6 {[#] Black is now going downhill.} 26. Bb6 $1 Qb3 {
[#]} ({Black should try} 26... Re8 $14 )27. Qd3 $1 $16 {} Qxd3 28. Rxd3 { Endgame KRB-KRB} b4 29. Kf1 Kf8 30. Ke2 Bc3 (30... Ke7 $16 {
was worth a try.} 31. Bc5+ { Double Attack} Ke6 )31. Kd1 $18 Ke7 32. Kc2 Ke6 33. Kb3 f5 34. f4 g5 $2 (34... g6 35. Rd1 Rb8 )35. g3 (35. fxg5 $142 hxg5 36. Rd8 )g4 36. h4 Kf7 $2 (36... h5 37. Rd1 Rb8 )37. h5 Be1 38. Ka4 Rb8 39. Kb5 Kf6 40. a6 Bf2 {[#]} 41. a7 $1 {White mates.} Rxb6+ {KRB-KR} 42. Ka5 Rb7 43. a8=Q Ra7+ {[#]} 44. Qxa7 $1 Bxa7 45. Kxb4 {KR-KB} Bf2 46. Kb5 Ke6 47. Kc6 Kf6 48. Kd5 Be1 49. Ra3 Bf2 50. Ra6+ Kg7 51. Ke5 {Weighted Error Value:
White=0.08/Black=0.38} 1-0

[Event "Airthings Masters KO 2020"]
[White "Aronian,Levon"]
[Black "Radjabov,Teimour"]
[Site "Online"]
[Round "3.1"]
[Annotator "TA"]
[Result "0-1"]
[Date "2021.01.01"]
[WhiteElo "2781"]
[BlackElo "2765"]
[PlyCount "96"]

1. e4 {} e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 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.} 10. Rd1 Kc8 11. g4 {[#] Strongly threatening Rxd7.} Ne7 {The position is equal.} 12. Ng5 Be8 13. f4 c5 $5 { An interesting side line.} 14. Nc3 b6 {[#]} (14... h6 {looks sharper.} 15. Nf3 Bc6 16. Kf2 g6 17. a4 a5 )15. f5 $146 ({
Predecessor:} 15. Kf2 Nc6 16. Be3 Nd4 17. Bxd4 cxd4 18. Ne2 c5 19. c3 h6 20. Ne4 Bc6 21. N4g3 dxc3 22. Nxc3 {1-0 (39) Dominguez Perez,L (2732)-Melkumyan,H 
(2622) Baku 2015} )Nc6 16. Bf4 Nd4 17. Kf2 h6 18. Nf3 Nxc2 19. Rac1 Nb4 20. a3 Nc6 21. Nd5 Ne7 22. Ne3 Nc6 (22... Kb7 $15 )23. f6 (23. Nd5 $11 )Bd7 {Black converts the advantage convincingly.} (23... g5 $17 24. Bg3 Nd8 )24. b4 ({White should play} 24. fxg7 $15 Bxg7 25. b4 )g5 $17 25. Bg3 Be6 26. Rd3 Kb7 27. Rdc3 Rd8 28. Nf5 a5 29. b5 Na7 30. a4 c6 31. bxc6+ Nxc6 32. Ke2 Nb4 33. Rd1 (33. Rb1 $17 {was called for.} )Rxd1 $19 34. Kxd1 Nd5 35. Ra3 c4 36. Nd6+ Bxd6 37. exd6 Rd8 38. Be5 Nb4 39. Bg3 Nd3 40. Nd4 Bd7 41. Kd2 Re8 42. Nc2 $2 (42. Rc3 )Nc5 {Black is clearly winning.} 43. Re3 Ne4+ 44. Kc1 Nxg3 45. Rxg3 Re6 46. Rc3 Rxf6 47. Rxc4 {[#] Hoping for Rc7+.} Rxd6 48. Kb2 Rd3 {Weighted Error Value: White=0.28/Black=0.07} 0-1

[Event "Airthings Masters KO 2020"]
[White "Radjabov,Teimour"]
[Black "Aronian,Levon"]
[Site "Online"]
[Round "3.1"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2021.01.01"]
[WhiteElo "2765"]
[BlackElo "2781"]
[PlyCount "89"]

1. d4 {} Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 dxc4 6. e4 c5 7. Bxc4 cxd4 8. Nxd4 Bxc3+ 9. bxc3 Qa5 10. Bb5+ Nbd7 11. Bxf6 Qxc3+ 12. Kf1 gxf6 13. h4 Qb4 {D39: Queen's Gambit Declined: Ragozin Defence with 5
Bg5 dxc4.} 14. Rh3 { White has compensation.} a6 $1 {} 15. Be2 Ne5 16. Rb1 Qd6 17. Rc3 0-0 {is now debated instead of 17...b5.} 18. h5 Rd8 19. Rg3+ Kf8 20. Qb3 Qc5 ({Avoid the trap} 20... Qxd4 $2 21. Rd1 $18 )21. Nf3 Ke7 22. Nxe5 Qxe5 23. Qa3+ Qd6 24. Qe3 {Rd1 is the strong threat.} Qd2 25. Qc5+ ({White should play} 25. Qb3 $14 )Qd6 $11 26. Qc3 Qe5 27. Qa3+ Qd6 28. Qc1 {[#] Threatens to win with Rd3.} Bd7 29. Rxb7 {[#]} Rac8 $146 ({
Predecessor:} 29... Rdc8 30. Qe1 Qc5 31. Rd3 Rc7 32. Rxc7 Qxc7 33. Qb4+ Ke8 34. Rg3 {1/2-1/2 (32) Bokar,J (2539)-Jonsson,D (2557) ICCF email 2018} )30. Qb2 Qe5 ({Better is} 30... Rb8 $11 31. Rgb3 (31. Rf3 Qe5 $11 )Rxb7 32. Rxb7 Rc8 )31. Qa3+ $14 Qc5 {[#] And now ...Qxa3 would win.} 32. Bxa6 Qxa3 33. Rxa3 Kf8 34. Bd3 Rc5 35. g4 e5 36. f3 Kg7 {The position is equal.} 37. Ke2 Be6 38. Rb2 Rc1 39. Ke3 Kh6 40. Rc2 Ra1 41. Bc4 Rc8 42. Rac3 Rxc4 43. Rxc4 Bxc4 44. Rxc4 {
Black should prevent Rc7.} Rxa2 45. Rc7 {Weighted Error Value: White=0.08/
Black=0.07} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Dubov,Daniil"]
[Black "Vachier-Lagrave,Maxime"]
[Site "Online"]
[Round "3.1"]
[Annotator "TA"]
[Result "0-1"]
[Date "2021.01.01"]
[WhiteElo "2699"]
[BlackElo "2784"]
[PlyCount "96"]

1. e4 {} c5 2. Nf3 d6 3. Bb5+ Nd7 4. 0-0 a6 5. Bxd7+ Bxd7 6. c3 Nf6 7. Re1 Bc6 8. d4 Bxe4 9. Bg5 Bg6 10. d5 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} Qd7 11. Nbd2 0-0-0 ({Not} 11... Nxd5 $2 12. Nc4 $18 )12. b4 {[#] The position is
equal.} e6 $146 (12... Nxd5 $11 13. Nc4 e6 )({Predecessor:} 12... Nxd5 13. Nc4 e6 14. Bxd8 Qxd8 15. bxc5 dxc5 16. Nfe5 Qc7 17. Qf3 b5 18. Nxg6 hxg6 {1/2-1/2 
(27) Delavekouras,S (2406)-Keuter,K (2461) ICCF email 2014} )13. Nc4 (13. dxe6 $1 $16 fxe6 14. bxc5 )Qb5 (13... Nxd5 $11 14. Bxd8 Qxd8 )14. Nfd2 exd5 $2 { [#]} (14... Nxd5 $14 15. Bxd8 Kxd8 )15. a4 $1 $18 Qc6 {[#]} 16. b5 $1 axb5 (16... Qc7 $142 )17. axb5 Qxb5 18. Qf3 $2 dxc4 $11 19. Bxf6 gxf6 $2 (19... Rd7 $11 20. Nf1 gxf6 21. Ra8+ Kc7 )20. Ra8+ $16 Kc7 21. Rxd8 Kxd8 22. Qxf6+ { Double Attack} Kd7 {aiming for ...Rg8.} 23. Qxh8 Be7 {[#]} 24. Nf1 (24. h4 $1 $16 )Qb6 $14 {next ...Qd8 is good for Black.} 25. Qa8 Qa6 26. Qh8 {Ne3 is the strong threat.} (26. Qg8 {is interesting.} Qb6 27. Qb8 Qa6 28. Ne3 Bd8 29. f3 )b5 (26... Qb6 $11 {remains equal.} )27. Ne3 (27. h4 $16 )Qc8 $11 28. Qxc8+ Kxc8 29. Nxc4 $1 { Endgame KRN-KB} Kd8 30. Na3 b4 31. cxb4 cxb4 32. Nc4 Kd7 33. f3 {[#]} (33. Rc1 $1 $11 )b3 $1 $17 34. Kf2 (34. Rd1 $17 {was worth a try.} Bf6 35. Rxd6+ { Double
Attack} Ke7 36. Rc6 )Bf6 $19 35. Nd2 (35. Rd1 {keeps fighting.} b2 36. Nxb2 Bxb2 37. g4 )b2 36. Ne4 $2 (36. Re4 )Bxe4 37. fxe4 {KR-KB} Bg5 38. Rb1 Bc1 39. Ke2 Ke6 40. Kd3 Ke5 41. g3 h5 {Black mates.} 42. h3 f6 43. h4 f5 44. exf5 Kxf5 45. Kd4 Kg4 46. Kd5 Kxg3 47. Kxd6 Kxh4 48. Ke5 Kg3 {What a
bad dream for White.  Weighted Error Value: White=0.84/Black=0.47} 0-1

[Event "Airthings Masters KO 2020"]
[White "Vachier-Lagrave,Maxime"]
[Black "Dubov,Daniil"]
[Site "Online"]
[Round "3.2"]
[Annotator "TA"]
[Result "1-0"]
[Date "2021.01.03"]
[WhiteElo "2784"]
[BlackElo "2699"]
[PlyCount "91"]

1. e4 {} e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. c3 d6 8. d4 Bb6 9. a4 Rb8 10. a5 {C78: Ruy Lopez: Archangelsk and Möller Defences.} Ba7 ({Don't go for} 10... Bxa5 $2 11. dxe5 (11. d5 Ne7 $18 )dxe5 12. Qxd8+ Kxd8 13. Bd5 $18 (13. Bxf7 Bb6 $16 ))11. h3 Bb7 12. Re1 {The position is equal. 12.Be3 injects fresh
life into this line.} Ne7 13. Bc2 0-0 14. Nbd2 Ng6 15. Nf1 Re8 16. Ng3 {[#]} exd4 $146 ({Predecessor:} 16... d5 17. Nxe5 Nxe4 18. Nf3 c5 19. dxc5 Bxc5 20. Be3 Bxe3 21. Rxe3 Qc7 22. Ne2 Rbd8 {1/2-1/2 (99) Lopez Martinez,J (2570)
-Halkias,S (2570) Novi Sad 2009} )17. cxd4 c5 18. d5 c4 19. b4 cxb3 20. Bxb3 Nd7 21. Nf5 (21. Bg5 $14 Qc7 22. Qd2 )Nde5 $11 22. Be3 Bxe3 23. Rxe3 Bc8 24. N3d4 Qf6 25. Rc1 Bxf5 26. exf5 Nh4 27. Nc6 {aiming for Rxe5.} Nxf5 {[#]} (27... Ra8 $1 $11 {remains equal.} )28. Rxe5 $1 $16 {} dxe5 29. Nxb8 Rxb8 30. Rc6 Qd8 {Loses the game.} (30... Nd6 $16 )31. d6 $1 $18 Nd4 32. Rxa6 b4 33. Ra7 Kh8 34. Rxf7 {Strongly threatening Qg4.} Nxb3 35. Qxb3 Qxd6 {
 Endgame [#] KQR-KQR} 36. Qc4 h6 (36... b3 $142 37. Rb7 b2 38. Rxb2 Ra8 )37. a6 {} b3 {[#]} 38. Rb7 $1 Ra8 39. a7 b2 40. Qb3 Qd2 41. Rb8+ {White mates.} Kh7 42. Qg8+ Kg6 43. Qe6+ { Double
Attack} Kg5 44. Qxe5+ { Double Attack} Kg6 45. Qe6+ Kg5 46. Rb5+ {
Weighted Error Value: White=0.05/Black=0.44} 1-0

[Event "Airthings Masters KO 2020"]
[White "Aronian,Levon"]
[Black "Radjabov,Teimour"]
[Site "Online"]
[Round "3.2"]
[Annotator "TA"]
[Result "1/2-1/2"]
[Date "2021.01.03"]
[WhiteElo "2781"]
[BlackElo "2765"]
[PlyCount "83"]

1. e4 {} e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 0-0 6. 0-0 d6 7. Bg5 h6 8. Bh4 g5 {8...a6 is the modern
continuation. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 9. Bg3 a5 10. Re1 {[#]} Re8 $146 {White is slightly better.} ({Predecessor:} 10... Ba7 11. Na3 Kg7 12. Nb5 Bb6 13. d4 Nh5 14. Rc1 Qf6 15. Bd5 Nxg3 16. hxg3 Ne7 17. Bb3 Ng6 18. c4 exd4 19. Nfxd4 c6 20. Nf5+ Bxf5 {0-1 (20) Bacrot,E (2673)
-Maghsoodloo,P (2676) chess.com INT 2020} )11. Nbd2 {
} Ba7 12. Nf1 Be6 13. Bb5 Bd7 14. Ne3 Ne7 {
} 15. a4 c6 16. Bc4 Ng6 17. Qc2 Nf4 18. Rad1 Qe7 19. d4 exd4 20. Bxf4 gxf4 21. e5 {[#]} dxe3 $4 {} (21... d3 $1 $19 {} 22. Qxd3 fxe3 23. Qg6+ { Double Attack} Kh8 24. Qxh6+ { Double
Attack} Nh7 25. fxe3 d5 )22. Qg6+ $18 Kh8 23. Qxh6+ Nh7 24. Bd3 $1 {
} exf2+ 25. Kf1 $1 {} fxe1=Q+ 26. Rxe1 {
} Bf5 27. Bxf5 {} f6 28. exf6 Qf7 {
( -> ...Qc4+)} 29. Re6 $4 {} Rxe6 $19 30. Ng5 Rxf6 31. Nxf7+ Rxf7 32. Bxh7 Rxh7 33. Qf6+ Kg8 34. Qg6+ Rg7 35. Qe6+ Rf7 36. Qg6+ {[#]} Kf8 $1 {
Threatens to win with ...Bc5.} 37. Qxd6+ Kg7 {Hoping for ...Re8.} 38. Qe5+ {[#]
} Kg6 $1 39. Qe6+ Kg7 ({Black should play} 39... Rf6 $19 40. Qg4+ Kh6 41. Qh3+ Kg7 42. Qg4+ Kf8 )40. Qe5+ $17 Kg6 (40... Kg8 $17 {Strongly threatening ...f3.} 41. Qxa5 Kf8 )41. Qe6+ $1 $19 Kg7 {And now ...Bb6 would win.} 42. Qe5+ $1 {
Quite a comeback for White.  Weighted Error Value: White=0.30/Black=0.39} 1/2-1/2

[Event "Airthings Masters KO 2020"]
[White "Radjabov,Teimour"]
[Black "Aronian,Levon"]
[Site "Online"]
[Round "3.2"]
[Annotator "TA"]
[Result "1-0"]
[Date "2021.01.01"]
[WhiteElo "2765"]
[BlackElo "2781"]
[PlyCount "123"]

1. d4 {} Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Bf4 Nxc3 6. bxc3 c5 {D80: Grünfeld: Unusual White 4th moves and 4 Bg5.} 7. e3 Nc6 {[#]} 8. cxd5 $146 ({Predecessor:} 8. Nf3 cxd4 9. cxd4 Qa5+ 10. Qd2 dxc4 11. Bxc4 Bd7 12. Ne5 Qxd2+ 13. Kxd2 Nxe5 14. Bxe5 {1/2-1/2 (23) Tempone,M (2423)-Alonso,S 
(2355) Buenos Aires 1999} )Qxd5 {The position is equal.} 9. Qf3 Qd7 10. Bb5 {aiming for d5.} a6 11. Bxc6 Qxc6 12. Qxc6+ bxc6 13. Nf3 Bg7 14. Ne5 Bf5 15. f3 Bxe5 16. Bxe5 f6 17. Bg3 Bd3 18. Rd1 c4 19. Rd2 Kf7 20. Rb2 Rhd8 21. e4 c5 (21... Rd7 $11 )22. dxc5 $14 Rac8 23. Bf2 f5 24. exf5 gxf5 25. Be3 f4 26. Bxf4 Rxc5 27. Kf2 Rb5 28. Rxb5 axb5 $16 { Endgame KRB-KRB} 29. a3 Ra8 30. Ra1 Ra6 31. g4 Ke6 32. h4 Kd5 33. h5 e5 34. Be3 Ra8 35. Bg5 Ke6 36. Bh4 Kd5 37. Ke3 Ke6 38. Ra2 Kd5 39. Be7 Ke6 40. Bb4 h6 {Black is now going
downhill.} (40... Kd5 $14 )41. Rb2 Bh7 42. Kf2 Bd3 (42... Kd7 $16 43. Re2 Re8 )43. Bc5 $18 Kd5 (43... Kd7 $142 44. Be3 (44. Rxb5 Kc6 $17 )Rxa3 )44. Be3 ({Worse is} 44. Rxb5 Kc6 $17 )Kc6 {[#]} 45. Ra2 ({Weaker is} 45. Bxh6 Rxa3 46. Bd2 Rb3 $18 )e4 46. Bxh6 exf3 47. Kxf3 b4 48. cxb4 c3 49. Ke3 Bb1 50. Ra1 c2 51. Kf3 Kb5 $2 (51... Rf8+ 52. Kg2 (52. Bxf8 $2 {is the wrong
capture.} c1=Q $19 )Rf6 )52. a4+ Kxb4 53. a5 Ra6 54. Bc1 Rf6+ 55. Kg2 Rd6 56. a6 {Intending a7 and mate.} Rd1 57. Be3 Rd3 {[#]} 58. Bc1 (58. a7 $142 $1 Rd8 59. a8=Q { Promotion} Rxa8 60. Rxa8 )Rd1 $1 {} 59. Bh6 Rd6 {[#]} 60. a7 $1 Rxh6 (60... c1=Q 61. Bxc1 )61. a8=Q c1=Q {[#]} 62. Rxb1+ $1 { Weighted Error Value: White=0.04/Black=0.18} 1-0

[Event "Airthings Masters KO 2020"]
[White "Dubov,Daniil"]
[Black "Vachier-Lagrave,Maxime"]
[Site "Online"]
[Round "3.2"]
[Annotator "TA"]
[Result "1-0"]
[Date "2021.01.01"]
[WhiteElo "2699"]
[BlackElo "2784"]
[PlyCount "117"]

1. e4 {} c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nf6 6. Nc3 g6 7. 0-0 Bg7 8. d4 cxd4 9. Nxd4 0-0 {B52: Sicilian: Moscow Variation with 3...Bd7.} 10. Be3 Rc8 11. b3 {[#]} Ng4 $146 {The position is equal.} ({Predecessor:} 11... a6 12. a4 Nc6 13. f3 e6 14. Rc1 d5 15. cxd5 exd5 16. Nxc6 bxc6 17. e5 Ne8 18. f4 f6 19. Bc5 fxe5 20. fxe5 Nc7 21. Ne4 Bxe5 22. Ng5 Re8 23. Rf7 Qd8 24. Qg4 h5 25. Qh4 Ne6 26. Be3 Nxg5 27. Bxg5 Qb6+ {0-1 (27) Bojkov,D (2523)-Gaponenko,I (2422)
Reykjavik 2008} )12. Bg5 h6 13. Bh4 Nc6 14. Nxc6 bxc6 ({Don't blunder} 14... Qxc6 $2 15. Nd5 $18 )15. Qd2 g5 16. Bg3 Qe6 17. Rac1 Rd8 18. h3 Ne5 19. Qe2 Ng6 20. Rfe1 Be5 21. Nd1 Bxg3 22. fxg3 Qe5 23. Ne3 e6 (23... Qxe4 $11 24. Qf1 Qd4 )24. Qf2 h5 25. Rcd1 Qh8 26. Rd2 Rd7 27. Red1 Rad8 28. c5 $1 {} d5 {
[#]} 29. Nc4 $1 {} h4 $14 30. Nd6 {} hxg3 31. Qxg3 Qh4 {
White now steadily converts the win.} 32. Qc3 g4 ({Better is} 32... Nf4 )33. exd5 $16 cxd5 {[#]} 34. Rd4 $1 {} Qh8 35. hxg4 Qe5 36. Re1 Qg7 37. b4 Rxd6 (37... Ne5 $16 {was necessary.} )38. cxd6 $18 Rxd6 39. b5 a6 (39... Qf6 $142 40. Rd3 Qd8 )40. a4 axb5 41. axb5 Rb6 42. Rb1 Qe5 43. Qd2 Kg7 (43... Qb8 {
keeps fighting.} 44. Rdb4 Qd6 )44. Qf2 Qf6 $2 (44... Qc7 45. Ra4 Qb7 )45. Ra4 {
White is clearly winning.} Qxf2+ 46. Kxf2 { Endgame KRR-KRN} Ne5 47. Ke3 Rb7 48. Kd4 Nd7 49. Ra6 Kf6 50. Rc6 Ke7 51. g5 Nb8 52. Kc5 Nd7+ {[#]} 53. Kb4 $1 Ne5 54. Ra6 Nd3+ 55. Ka5 Ne5 56. b6 Nc6+ 57. Kb5 Kd6 58. Ra8 e5 59. Rc1 {Weighted Error Value: White=0.12/Black=0.30} 1-0

