Стартовал шахматный турнир Skilling Open 2020: лидирует Аниш Гири

22 ноября 2020 года стартовал супер-турнир по быстрым шахматам Skilling Open 2020 с участием чемпиона мира Магнуса Карлсена.

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В турнире принимают участие 16 гроссмейстеров из 13 стран мира:

Магнус Карлсен (Норвегия)
Дин Лижень (Китай)
Ян Непомнящий (Россия)
Максим Вашье-Лаграв (Франция)
Левон Аронян (Армения)
Уэсли Со (США)
Теймур Раджабов (Азербайджан)
Аниш Гири (Нидерланды)
Сергей Карякин (Россия)
Алиреза Фирузджа (Иран)
Ян-Кшиштоф Дуда (Польша)
Хикару Накамура (США)
Видит Гуджрати (Индия)
Петр Свидлер (Россия)
Ле Куанг Льем (Вьетнам)
Давид Антон Гихарро (Испания)

Список участников шахматного турнира Skilling Open 2020 — Участники Skilling Open 2020

В партии против Яна Непомнящего Магнус Карлсен подставил ферзя и проиграл.

К сожалению, Ян проиграл испанскому шахматисту Давиду Антону Гихарро. От рук Гихарро пострадал и другой российский гроссмейстер — Петр Свидлер. Можно предположить, что россияне недооценили участника турнира с невысоким рейтингом.

Крайне неудачно начался турнир для Сергея Карякина — три поражения и две ничьих. Пока он замыкает турнирную таблицу набрав лишь одно очко из пяти возможных.

Турнирная таблица Skilling Open 2020 после первого игрового дня

Все партии первого игрового дня.

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[Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "1.1"] [White "Giri, Anish"] [Black "Vachier-Lagrave, Maxime"] [Result "1/2-1/2"] [ECO "B62"] [WhiteElo "2731"] [BlackElo "2860"] [Annotator "TA"] [PlyCount "52"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 13,52,26,31,0,12,0,0,0,14,0,21,37,61,59,67,73,71,73,61,70,76,46,52,56,  55,53,56,59,58,18,39,0,0,0,8,0,0,0,8,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.  Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Bb5 Bd7 8. Qd3 $1 {[%mdl 4] outshines the  older 8.Bxc6. B62: Sicilian: Richter-Rauzer: 6...e6: Unusual White 7th moves.}  (8. O-O {with more complications.} Be7 9. Nb3 Qc7 10. Be3 O-O 11. f4) 8... Be7  9. Bxc6 bxc6 10. O-O-O O-O 11. Nb3 d5 12. e5 Ng4 13. Bxe7 Qxe7 14. Qd4 Nh6 15.  f4 f6 {[#]} 16. exf6 $146 ({Predecessor:} 16. Rhe1 Nf7 17. Nc5 fxe5 18. fxe5  Nh6 19. N3a4 Be8 20. Rf1 Bh5 21. Rde1 Nf5 22. Qd2 {1-0 (36) Matlakov,M (2700)  -Maghsoodloo,P (2688) St Petersburg 2018}) 16... Qxf6 17. g3 (17. Nc5 {keeps  more tension.} Qe7 18. Rhe1 Nf5 19. Qg1 Rae8 20. g3) 17... Nf5 18. Qxf6 gxf6  19. Nc5 Rf7 20. Rhe1 Re8 21. g4 (21. N3e4 $5 Bc8 22. g4 dxe4 23. gxf5 exf5 24.  Rg1+ Rg7 25. Rxg7+ Kxg7 26. Rd6 $14) 21... Nd6 22. h4 Bc8 {The position is  equal.} 23. Nd3 Ba6 24. Nc5 Bc8 25. Nd3 Ba6 26. Nc5 Bc8 {Weighted Error Value:  White=0.10/Black=0.05} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "1.2"] [White "Karjakin, Sergey"] [Black "Ding, Liren"] [Result "1/2-1/2"] [ECO "B55"] [WhiteElo "2709"] [BlackElo "2836"] [Annotator "TA"] [PlyCount "48"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 17,48,0,6,-64,-55,-42,-42,-47,-42,-31,-37,-56,-36,-48,-28,-62,-53,-53,  -55,-61,-50,-64,-44,-58,-35,-66,-54,-41,0,0,0,-60,0]} 1. e4 c5 2. Nf3 d6 3. d4  cxd4 4. Nxd4 Nf6 5. f3 e5 6. Nb3 d5 7. Bg5 Be6 8. exd5 Qxd5 9. Nc3 Bb4 10. Bxf6  {B55: Sicilian: 2...d6 3 d4 cxd4 4 Nxd4 Nf6 5 f3.} ({Better is} 10. Qd2 $11)  10... Qxd1+ $15 {[#]} 11. Kxd1 $146 ({Predecessor:} 11. Rxd1 gxf6 12. Kd2 Nc6  13. a3 O-O-O+ 14. Bd3 Bxb3 15. cxb3 Bf8 16. Ne2 Bh6+ 17. Kc2 Be3 {1-0 (53)  Popov,I (2596)-Nazaretyan,T (2308) Sochi 2016}) 11... gxf6 12. Nb5 Kd7 13. a3  Be7 14. Ke1 Rc8 15. Bd3 f5 16. Kf2 Ke8 17. Rhe1 Nd7 18. Nc3 Kf8 19. g3 Nc5 20.  Nxc5 Rxc5 21. Na4 Ra5 22. Nc3 Rc5 23. Na4 Ra5 (23... Rd5 $11) 24. Nc3 {  Threatening b4.} Rc5 {Weighted Error Value: White=0.12/Black=0.05} (24... Bc5+  $15 25. Kg2 Bd4) 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.22"] [Round "1.3"] [White "Nakamura, Hikaru"] [Black "Duda, Jan-Krzysztof"] [Result "1/2-1/2"] [ECO "C43"] [WhiteElo "2829"] [BlackElo "2774"] [Annotator "TA"] [PlyCount "68"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 12,68,0,0,0,0,2,0,0,0,0,0,0,5,0,0,0,0,0,0,8,0,0,0,17,9,11,0,0,0,0,0,0,0,  7,4,0,0,22,8,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 3. d4  Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. O-O Nxe5 7. dxe5 {The position is equal.} Nc5 {  C43: Petroff Defence: 3 d4.} 8. f4 g6 9. Be3 Nxd3 10. Qxd3 c6 11. Nd2 Be7 12.  Qc3 O-O 13. Nb3 {[#]} Bf5 $146 ({Predecessor:} 13... Re8 14. a4 Bf8 15. a5 a6  16. Bc5 Bxc5+ 17. Nxc5 Qc7 18. Ra3 Bf5 19. Rb3 Rab8 {1-0 (30) Sanchez,M (2352)  -Normando,M (2068) ICCF email 2006}) 14. Rad1 Rc8 15. Bc5 b6 16. Bxe7 Qxe7 17.  Rfe1 Rfd8 18. Nd4 Qd7 19. Nxf5 Qxf5 20. Rf1 c5 21. Qd3 Qxd3 22. Rxd3 $11 {  [%mdl 4096] Endgame KRR-KRR} d4 23. Rfd1 f6 24. exf6 Rf8 25. c3 Rxf6 26. cxd4  Rxf4 27. dxc5 Rxc5 28. Rd7 Rf7 29. Rxf7 Kxf7 {KR-KR} 30. Rd7+ Kg8 31. Rd8+ Kg7  32. Rd7+ Kg8 33. Rd8+ Kg7 34. Rd7+ Kg8 {A rather calm draw. Weighted Error  Value: White=0.01/Black=0.03} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "1.4"] [White "Le, Quang Liem"] [Black "Aronian, Levon"] [Result "0-1"] [ECO "D66"] [WhiteElo "2744"] [BlackElo "2778"] [Annotator "TA"] [PlyCount "106"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 22,106,19,14,17,30,33,0,9,7,8,-20,-20,-22,0,0,0,0,19,0,69,0,16,12,25,0,  0,0,0,-37,-16,-36,0,-20,-16,-23,-46,-43,0,0,0,-112,0,0,0,-62,0,0,0,-199,-77,  -50,0,0,0,-1238,-60,-68,-64,-64,-70,-92,-67,-385,-372,-387,-387,-377,-366,-488,  -470,-506,-494,-877,-868,-1011,-1037,-1504,-1511,-1472,-1285,-2093,-2016,  -29979,-29980,-29980,-29981]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5  O-O 6. e3 Nbd7 7. Rc1 dxc4 8. Bxc4 a6 9. a4 b6 10. O-O Bb7 11. Qe2 c5 12. Rfd1  cxd4 {D66: Queen's Gambit Declined: Classical: Main Line (7 Rc1 c6 8 Bd3).} 13.  Nxd4 {[#]} Qe8 $146 ({Predecessor:} 13... Nd5 14. Bxd5 exd5 15. Bxe7 Qxe7 16.  Nf5 Qe6 17. Nd4 Qg6 18. Qf3 Nf6 19. Nf5 Kh8 20. Nd6 {1-0 (28) Gajdosik,A (1972)  -Jakab,R (1880) Slovakia 2018}) 14. e4 Ne5 {The position is equal.} 15. Bb3 Bc5  16. Bf4 Ng6 17. Be3 Rc8 (17... Nxe4 $6 18. Nxe4 Bxe4 19. Nxe6 $1 $16 {[%mdl  512]}) 18. f3 Qe7 19. Bc4 a5 20. Bb5 Bd6 (20... Ne8 $11) 21. g3 ({Better is}  21. Nb3 $14) 21... h5 $11 22. Qf2 h4 23. Nde2 Bc5 24. Rd2 Ne5 25. Rcd1 g5 26.  Bxc5 Rxc5 (26... Qxc5 {is more complex.} 27. Nd4 g4 28. f4 hxg3 29. hxg3 Nf3+)  27. g4 Bc6 28. Nd4 Bxb5 29. axb5 Qc7 30. Na4 Rc1 31. Ne2 (31. Qe3 $1 $11 Nh7  32. Nc6 Rxd1+ 33. Rxd1) 31... Rc4 (31... Rxd1+ $17 32. Rxd1 Rd8 33. Rxd8+ Qxd8)  32. b3 Rb4 33. Nd4 ({White should play} 33. Qe3 $11 Nh7 34. Rc1) 33... Rc8 (  33... Rd8 $15 34. Qe3 Nh7) 34. Qe3 Kh7 35. Nc6 $2 (35. Qxg5 $2 Rxd4 $1 {  [%mdl 512]} 36. Qxf6 Rxd2 $19) (35. Kh1 $11 {and White stays safe.}) 35... Nxc6  (35... Rxb5 $19 {has better winning chances.} 36. Nd4 Rb4) 36. bxc6 $17 ({  But not} 36. Qxg5 Rxb3 37. bxc6 (37. Qxf6 Ne5 $11) 37... Rxf3 $11) 36... Qf4 (  36... Qe5 $5 {[%cal Rc8c6]} 37. Rc2 (37. Nxb6 Rxc6 38. Nc4 Qc5 $15) 37... Nd5  $15) 37. Qc3 Nxe4 (37... e5 {is interesting.} 38. Rd3 Ne8 39. Rd7 Kg7 40. Nb2  Rxc6 41. Rxf7+ Kxf7 42. Rd7+ Kf8) 38. Qd3 $2 {[%mdl 8192] [#]} (38. fxe4 $11  Qxg4+ 39. Kh1 Qxe4+ {[%mdl 64] Double Attack} 40. Rg2) 38... Rxc6 $2 (38... Rd8  $1 $19 {[%mdl 512]} 39. Rc2 (39. Qxd8 Qe3+) 39... Rxd3 40. Rxd3 Rd4 $1 {  [%mdl 512]}) 39. fxe4 $15 Qxe4 40. h3 Qxd3 41. Rxd3 {[#]} b5 $1 {[%cal Rb5a4,  Bb6b5,Bb5b4,Bb4b3][%mdl 32]} 42. Nc3 $2 {[%mdl 8192] Now White is beyond hope.}  ({White must play} 42. Nb2 $15) 42... Rxb3 $19 43. Ne4 Rxd3 44. Rxd3 {[%mdl  4096] Endgame KRN-KR} Kg6 45. Rd8 {intending Rg8+.} f5 46. Nf2 b4 47. Rb8 (47.  gxf5+ $142 exf5 48. Nd3) 47... Rc3 48. gxf5+ exf5 49. Rb6+ Kh5 50. Kf1 b3 51.  Ke2 a4 {[%cal Ba5a4,Ba4a3][%mdl 32]} 52. Nd3 a3 53. Rb8 {[#]} Rxd3 $1 {[%mdl  576] Promotion. Weighted Error Value: White=0.98/Black=0.37} 0-1  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "1.5"] [White "Vidit, Santosh Gujrathi"] [Black "Firouzja, Alireza"] [Result "1/2-1/2"] [ECO "E05"] [WhiteElo "2636"] [BlackElo "2703"] [Annotator "TA"] [PlyCount "97"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 20,97,29,29,50,41,38,0,0,0,44,10,10,10,41,40,50,46,35,37,51,22,41,33,73,  63,88,5,3,4,85,83,138,102,127,121,172,178,178,187,169,175,207,179,169,4,2,6,8,  7,13,0,8,0,32,32,29,14,16,11,13,10,29,11,14,15,52,29,48,2,4,0,14,4,8,0,0,0,11,  0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8.  a4 Nc6 9. Qxc4 Qd5 {9...Na5 deserves study.} 10. Nbd2 Rd8 11. e3 Qh5 {E05:  Open Catalan: 5 Nf3 Be7.} 12. h3 Nd5 {[#]} 13. a5 $146 ({Predecessor:} 13. b3  Ndb4 14. Ba3 Bd7 15. Qe2 Be8 16. Rfc1 f6 17. Ne4 b6 18. Bxb4 Bxb4 19. g4 {  1/2-1/2 (37) Kamsky,G (2741)-Kryvoruchko,Y (2676) Achaea 2012}) 13... Ndb4 14.  Qc3 Nxa5 15. g4 (15. Qxc7 $5 {[%cal Ra1a5]} Nac6 16. g4 $11) 15... Qb5 $1 16.  Qxc7 Nac6 (16... Nbc6 $5 {[%cal Re7d6]}) 17. Ne5 {[#] Strongly threatening  Nxc6.} Nxe5 18. Qxe7 Nec6 19. Qh4 e5 20. Nf3 Bd7 21. dxe5 Nd3 22. Bd2 Ndxe5 23.  Nxe5 ({Better is} 23. Ng5 $16 h6 24. Ne4) 23... Nxe5 $11 24. Bc3 {With the  idea Ra5.} Ng6 (24... Bc6 $11) 25. Qh5 $36 {[%mdl 2048] White is in control.}  Qb3 (25... Bc6 $142) 26. Ra3 Qb6 27. Qa5 Qe6 (27... Qd6 $16 {is a better  defense.}) 28. Bxb7 $18 Bc6 29. Bxa8 Rxa8 30. Qf5 {Hoping for Qxe6.} Qe8 31. e4  Bxe4 {[#]} 32. Re1 $2 (32. Qc5 $1 $18 {[%cal Rc5d4]} Bc6 33. Re1) 32... Bxf5  $11 33. Rxe8+ Rxe8 34. gxf5 {[%mdl 4096] Endgame KRB-KRN} Nf4 35. Kh2 Ra8 36.  f6 g6 37. Be5 Nd5 38. Ra5 Nb4 39. Bc3 Nc6 40. Ra4 h6 41. Kg3 Kh7 42. h4 g5 43.  h5 Nd8 44. Rd4 Ne6 {The position is equal.} 45. Ra4 Nc5 46. Rc4 Ne6 47. Ra4 Nc5  48. Rc4 Ne6 49. Ra4 {Weighted Error Value: White=0.21/Black=0.16} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "1.6"] [White "So, Wesley"] [Black "Anton Guijarro, David"] [Result "1/2-1/2"] [ECO "E32"] [WhiteElo "2741"] [BlackElo "2667"] [Annotator "TA"] [PlyCount "102"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 20,102,-4,-4,0,-37,-20,-19,-14,-17,-18,-9,-8,-23,-4,-16,0,0,20,0,8,0,0,  -11,-14,-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,  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3  Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 d6 7. Bg5 Nbd7 8. Nf3 b6 9. Nd2 Bb7 10. f3  h6 11. Bh4 Re8 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} 12. e3 e5 13.  dxe5 {[#]} dxe5 $146 ({Predecessor:} 13... Rxe5 14. Bg3 Re6 15. Be2 Qe7 16. Bf2  d5 17. O-O Re8 18. Rfe1 c5 19. Bf1 Ne5 {1-0 (40) Steingrimsson,H (2543)  -Vallejo Pons,F (2705) Warsaw 2013}) 14. Be2 Ne4 {[%mdl 64] [#] Decoy} 15. Nxe4  Qxh4+ {[%mdl 64] Double Attack} 16. Ng3 Rad8 17. O-O {The position is equal.}  Qe7 18. b4 Nf6 19. Rfd1 g6 20. Rxd8 Rxd8 21. Rd1 Rxd1+ 22. Bxd1 h5 23. Nh1 e4  24. f4 c5 25. Nf2 Qe6 26. h3 Ne8 27. g4 hxg4 28. hxg4 Nd6 29. Be2 Ba6 $1 {  [%cal Ra6c4]} 30. b5 Bc8 31. g5 Qe7 32. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} Bf5  33. a5 Qe6 34. a6 f6 35. gxf6 Kf7 36. Qe5 Qxf6 37. Qd5+ Qe6 {aiming for ...  Qxd5.} 38. Qa8 Qe7 39. Nd1 Qh4 40. Nf2 Qg3+ 41. Kf1 Qxe3 42. Qxa7+ {[%mdl 64] [#] Double Attack} Ke6 {Hoping for ...Qc1+.} 43. Qxb6 Bh3+ 44. Nxh3 Qxh3+ 45.  Ke1 $1 Qc3+ {[%mdl 64] Double Attack} 46. Kf2 {Threatens to win with Bg4+.}  Qd4+ 47. Kf1 Qa1+ 48. Kf2 Qd4+ $1 {[%mdl 64] Double Attack} 49. Ke1 {And now  Qc6 would win.} Qc3+ 50. Kd1 {Strongly threatening Bg4+.} Qb3+ 51. Ke1 Qc3+ {  An uneventful encounter. Weighted Error Value: White=0.02/Black=0.02} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.22"] [Round "1.7"] [White "Svidler, Peter"] [Black "Radjabov, Teimour"] [Result "1/2-1/2"] [ECO "C54"] [WhiteElo "2742"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "176"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 14,176,39,5,22,22,16,10,15,14,14,18,14,20,13,7,6,5,0,0,0,0,13,0,14,14,  21,14,20,20,45,44,50,29,33,25,31,22,35,26,49,52,61,39,39,39,50,36,54,11,27,13,  144,45,62,56,79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,85,102,25,131,  131,131,131,366,131,131,131,131,50,131,131,131,131,131,0,131,131,131,131,131,  131,131,131,131,131,131,131,131,131,131,131,131,131,131,69,131,131,131,131,131,  8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,0,0,8,0,0,0,8,0,0,0,8,8,8,0,0,0,0,0,0,0,0,0,0,0,  0,0,8,0,0,0,8,0,8]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O h6  7. Re1 O-O 8. h3 (8. b4 $5 {[%cal Rb4c5]} Bb6 9. Nbd2 $11) 8... a6 {C54:  Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 9. a4 Re8 10. Nbd2 Ba7  11. b4 $1 {[%cal Bb2b4,Bb4b5][%mdl 32] The main line 11.b4 scores better than  11.Nf1.} Be6 12. Bxe6 Rxe6 13. Qc2 Qd7 14. Rb1 Rd8 15. b5 Ne7 {[#]} 16. d4 $146  {aiming for d5.} ({Predecessor:} 16. Nc4 Ng6 17. b6 {1/2-1/2 (17) Van Foreest,  J (2612)-Radjabov,T (2757) Wijk aan Zee 2019}) 16... Ng6 17. d5 Ree8 18. c4 Rf8  19. Nf1 Bc5 20. Be3 Bxe3 $1 21. Nxe3 b6 22. a5 axb5 23. Rxb5 bxa5 24. Rxa5 Ra8  25. Rea1 Rxa5 26. Rxa5 Rb8 27. c5 Qd8 28. Nc4 Ne8 29. g3 Qc8 30. Kg2 Ra8 31.  Nfd2 Rxa5 32. Nxa5 f5 (32... dxc5 $11 33. Qxc5 f5) 33. cxd6 (33. exf5 $16 Ne7  34. Nc6) 33... Nxd6 $14 34. Nac4 Ne7 35. Nxd6 cxd6 36. Qxc8+ Nxc8 37. exf5 $16  {[%mdl 4096] Endgame KN-KN} Ne7 {[%mdl 64] Double Attack} 38. g4 $1 Nxd5 39.  Nc4 $1 Nf4+ 40. Kg3 $1 Ne2+ 41. Kh2 Kf7 42. Nxd6+ Ke7 43. Ne4 h5 44. Kg2 (44.  gxh5 $16 Kf7 45. Kg2) 44... hxg4 (44... h4 $1 $11) 45. hxg4 Kf7 46. Kf3 Nf4 $2  (46... Ng1+ $16 {keeps fighting.} 47. Kg3 Ne2+ 48. Kh4 Nf4) 47. g5 $2 (47. Nc5  $1 $18) 47... g6 48. Kg4 Nd3 49. Nd6+ (49. f6 $16) 49... Kg7 (49... Kf8 $1 $14)  50. f6+ Kf8 51. Kf3 {Black must now prevent Nc4.} Nf4 52. Kg4 {Threatens to  win with Nc4.} Nd3 $1 53. f3 Nf4 54. Nc4 Nd3 55. Nb6 Kf7 56. Nd5 Nc5 57. Nc3  Nd3 58. Ne4 Ke6 59. Kg3 Kf7 60. Kg2 Ke6 61. Kf1 {Cut Off at move 61} Nf4 {[#]}  62. Kf2 (62. Kg1 $1 $16) 62... Nd5 (62... Kf5 $1 $14) 63. Nc5+ Kd6 64. Nd3 Nc7  {[#]} 65. f4 ({White has to play} 65. Kg3 $1 $16 Ne6 66. Kh4) 65... Ne6 $11 {  The position is equal.} 66. fxe5+ Kd5 $1 67. f7 {Strongly threatening Nf4+!}  Nf8 $1 68. Ke3 Nh7 69. Kf4 Ke6 70. f8=Q (70. Kg4 {is more complex.} Kxf7 71.  Nf4 Nf8 72. Kf3 Nh7 73. e6+) 70... Nxf8 71. Ke4 Nh7 72. Nc5+ Ke7 73. Kf4 Nf8  74. Ke4 Nh7 75. Kf4 Nf8 76. Nb3 Ke6 77. Ke4 Nh7 78. Nd4+ Ke7 79. Kf4 Nf8 80.  Nc6+ Kd7 {Hoping for ...Ne6+.} 81. Nd4 (81. Na5 {feels hotter.} Ne6+ 82. Kg4  Nc5 83. Kf4 Ke6 84. Nc6) 81... Ke7 82. Ke3 Nh7 83. Nf3 Nf8 84. Ke4 Ne6 85. Kd5  Kd7 86. Ke4 Ke7 87. Kd5 Kd7 88. Ke4 Ke7 {Blacks defense is rewarded with a  draw. Weighted Error Value: White=0.17/Black=0.17} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "1.8"] [White "Nepomniachtchi, Ian"] [Black "Carlsen, Magnus"] [Result "1-0"] [ECO "C60"] [WhiteElo "2778"] [BlackElo "2881"] [Annotator "TA"] [PlyCount "76"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 11,76,26,62,52,66,44,92,92,92,91,92,92,92,87,92,88,92,63,63,63,63,58,59,  66,94,77,74,16,0,0,22,-11,-6,0,-18,-16,16,11,59,46,51,22,63,41,68,22,56,52,112,  32,35,31,66,1,7,-146,-158,-557,-542,-493,-306,-234,-104,-174,-178,-178,1346]}  1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. Nc3 Ng6 5. d4 exd4 6. Nxd4 Bc5 {6...Nxd4 is  more fashionable. has lost popularity (6...Nxd4).} 7. Be3 {C60: Ruy Lopez:  Unusual Black 3rd moves and 3...g6.} Bxd4 8. Bxd4 Qg5 9. g3 {h4 is the strong  threat.White is better.} ({Much worse is} 9. Bxg7 $6 Rg8 $11) 9... Nxd4 10.  Qxd4 Ne5 {aiming for ...Nf3+.} 11. Be2 Nc6 12. Qc4 d6 {[#]} 13. Nd5 $146 ({  Predecessor:} 13. f4 Qa5 14. O-O-O Be6 15. Nd5 O-O-O 16. Rd3 Rhe8 17. Bf3 Bxd5  18. Rxd5 Qb6 19. Re1 a6 20. Kb1 Kb8 21. a3 {1/2-1/2 (21) Marciniak,A (2193)  -Ollier,P (2277) Creon 2011}) 13... Qd8 14. Qc3 O-O 15. O-O-O Re8 16. f3 Be6  17. Bb5 Bd7 18. h4 a6 19. Ba4 (19. Be2 $16) 19... b5 $11 20. Bb3 a5 {Hoping  for ...a4.} 21. a3 b4 22. axb4 axb4 23. Nxb4 Nxb4 24. Qxb4 Be6 25. Bxe6 Rxe6  26. Qc3 h5 27. b3 Rg6 28. f4 Ra6 29. Kb2 Re6 (29... Qe7 $14) 30. Qc4 (30. Rhe1  $16) 30... Qf6+ $1 $14 31. c3 Ra8 $1 32. Rhe1 ({White should play} 32. Qd5 $14  Ree8 33. Rhe1) 32... Qe7 $11 33. Rd5 $2 {[#]} ({White should try} 33. Qc6 $11  Qe8 34. Qd5 (34. Qxc7 Rxe4 35. Rxe4 Qxe4 $11)) 33... c6 $1 $17 {[%cal Rc6d5] [%mdl 1024] Black has strong compensation.} 34. Rd4 $2 {[#]} (34. Rd2 $17 d5  35. Qd4) 34... d5 $1 $19 {[%mdl 512]} 35. Qe2 (35. exd5 Qa3+) 35... Qa3+ 36.  Kc2 Qa2+ (36... dxe4 $19 {( -> ...Qa2+)} 37. Rb1 e3) 37. Kd3 (37. Kc1 $17)  37... Qxb3 38. Qc2 Qb4 $4 {[%mdl 8192] White used his chance. Weighted Error  Value: White=0.49/Black=0.21} (38... Qb6 $19 39. Ke2 Rxe4+ 40. Rxe4 dxe4) 1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "2.1"] [White "Vachier-Lagrave, Maxime"] [Black "Carlsen, Magnus"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2860"] [BlackElo "2881"] [Annotator "TA"] [PlyCount "142"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 16,142,29,17,23,6,15,24,19,-38,-45,-36,-18,-16,0,0,0,-45,-56,-40,-53,  -60,79,-60,-55,-67,-49,-49,-40,-38,-25,-27,-39,-31,-37,-47,-40,-72,-71,-79,-65,  -78,-75,-90,-70,-79,-64,-138,-126,-176,-158,-158,-150,-154,-158,-162,-151,-154,  -132,-145,-147,-154,-154,-147,-147,-143,-85,-102,-100,-90,-49,-125,-125,-107,  -107,-107,-47,-47,-47,-47,-47,-47,-47,-47,-47,-47,-47,-47,-47,-47,-47,-65,-55,  -55,-55,-55,-55,-59,-38,-38,-8,-8,-8,-8,-8,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,  0,0,0,0,0,8,8,8]} 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 Be6 {C67: Ruy Lopez: Berlin Defence: 4  0-0 Nxe4.} 10. Nc3 Bb4 11. Ne2 Bd5 {White has an edge.} 12. Nfd4 (12. Nd2 $11)  12... Nxd4 $15 13. Nxd4 Re8 14. Bf4 Ke7 (14... a5 {with more complications.}  15. Rfd1 Kc8 16. a3 Bc5 17. Rac1 b6) 15. Rfd1 Kf8 {[#]} 16. Rac1 $146 ({  Predecessor:} 16. a3 Bc5 17. Rd2 a5 18. Rad1 a4 19. Nf5 Bc4 {1/2-1/2 (19)  Gopal,G (2603)-Babula,V (2515) Khanty-Mansiysk 2010}) 16... Bxa2 17. b3 a5 18.  Ra1 Red8 (18... Bc3 $1 $15 {keeps the upper hand.}) 19. Rxa2 ({White should  play} 19. Ne2 $16) 19... c5 20. Be3 ({Don't go for} 20. c3 $2 Bxc3 21. e6 Rxd4  $19) 20... Ke8 21. f4 cxd4 (21... g5 {is interesting.} 22. fxg5 Bc3 23. Kf2  cxd4 24. Bd2 Bxd2 25. Rxd2 Ke7) 22. Rxd4 Rxd4 23. Bxd4 {[%mdl 4096] Endgame  KRB-KRB} b5 24. Kf2 a4 25. Kf3 Be7 26. bxa4 bxa4 27. f5 a3 28. Ke4 Kd7 29. c4  Kc6 30. g4 Bc5 31. g5 (31. Ra1 $15) 31... g6 $17 32. Bc3 Ra4 33. fxg6 hxg6 34.  Kd3 Kd7 35. Ra1 Ke6 36. Rf1 a2 37. Rf6+ Ke7 38. Rf1 Ra8 39. Kc2 Be3 40. h4 {[#] } Bc5 (40... c5 $142 $1 41. Kb3 {[#]} Bd2 $1 {[%mdl 512]}) 41. Kb3 Ra3+ 42. Kc2  Ke8 (42... c6 {feels hotter.} 43. Bb2 Ra4 44. Kb3 Ra8 45. Bc3 Ra3+) 43. Kb2 {  [#]} (43. e6 $15 fxe6 44. Ra1) 43... a1=Q+ $1 {[%mdl 512]} 44. Rxa1 Rxa1 45.  Kxa1 {KB-KB} Bf2 (45... Ke7 $17 {Hoping for ...Bf2.} 46. Be1 Ke6) 46. e6 $1 $15  fxe6 47. Kb2 Bxh4 48. Bf6 Bf2 49. Kc2 Bc5 50. Kd3 $1 Bd6 51. Ke4 Kd7 52. Kd4  Kc6 53. Kd3 Kc5 54. Bd4+ Kb4 55. Bc3+ Kb3 56. Bd4 c5 57. Bf6 e5 {Black wants  to play ...Bc7.} 58. Bd8 {[#]The position is equal.} e4+ $1 {[%mdl 576] Deflection} 59. Kxe4 Kxc4 {Threatening ...Bg3.} 60. Bf6 Bg3 61. Be7 {Cut Off  at move 61} Kb5 62. Kd5 $1 c4 {aiming for ...c3.} 63. Bf6 $1 Bf2 64. Ke6 Kc5  65. Kf7 Bd4 66. Be7+ Kb5 {Strongly threatening ...c3.} 67. Bf6 Kc5 {...c3 is  the strong threat.} 68. Be7+ Kd5 69. Bb4 Be3 70. Kxg6 c3 71. Bxc3 Bxg5 {  White happily takes the draw. Weighted Error Value: White=0.15/Black=0.11}  1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "2.2"] [White "Radjabov, Teimour"] [Black "Nepomniachtchi, Ian"] [Result "0-1"] [ECO "D93"] [WhiteElo "2758"] [BlackElo "2778"] [Annotator "TA"] [PlyCount "82"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 15,82,9,39,39,39,26,41,28,32,36,39,45,86,71,156,158,152,160,152,77,69,  65,48,14,25,20,22,0,0,0,0,0,0,-102,-84,-130,-56,-237,-237,-237,-237,-237,-237,  -342,-342,-342,-336,-335,-335,-332,-320,-335,-335,-335,-308,-445,-438,-425,  -312,-312,-312,-434,-312,-312,-312,-527,-502,-552,-301]} 1. d4 Nf6 2. c4 g6 3.  Nc3 d5 4. Nf3 Bg7 5. Bf4 O-O 6. e3 c5 7. dxc5 Qa5 8. Rc1 Ne4 {[%cal Re4c3]} 9.  Be5 {D93: Grünfeld: 4 Nf3 Bg7 5 Bf4 0-0 6 e3.} (9. Qxd5 $2 Nxc3 10. Qd2 (10.  bxc3 $2 Rd8 $19) 10... Rd8 $19) 9... Bxe5 10. Nxe5 Nc6 11. Nxc6 {White is  slightly better.} ({Weaker is} 11. Qxd5 Bf5 $19) 11... bxc6 12. cxd5 Nxc3 13.  Rxc3 {[#]} ({Much weaker is} 13. bxc3 cxd5 14. Qd4 (14. Qxd5 Be6 $17) 14... Bf5  $15) 13... Qxa2 $5 $146 {[%mdl 8] [#] An interesting novelty.} ({Predecessor:}  13... Rb8 14. Qd2 Rd8 15. Rb3 Qxd2+ 16. Kxd2 Rxd5+ 17. Kc3 Rxb3+ 18. axb3 Rd1  19. g3 Rc1+ {0-1 (70) Stojanovic,M (2568)-Kuzubov,Y (2639) Dubai 2014}) 14. b4  $1 cxd5 (14... Ba6 $142) 15. Qc1 $16 {Black must now prevent Ra3.} d4 16. exd4  Qd5 17. Be2 (17. Qe3 $142) 17... Rb8 18. O-O {And now b5 would win.} Rxb4 19.  Bf3 Qxd4 20. Rd1 Qe5 21. Re3 Qc7 22. c6 Be6 23. h3 a5 24. Rxe6 (24. Rc3 $11 {  keeps the balance.}) 24... fxe6 $17 25. Qe3 Rf6 (25... Kf7 $17 26. Qh6 Rh8) 26.  g3 $2 {[#]} (26. Qc3 $1 $15) 26... Qb6 $1 $19 {[%cal Rb6e3]} 27. Qxb6 Rxb6 {  [%mdl 4096] Endgame KRR-KRB} 28. c7 Rf8 29. Ra1 (29. Rd8 $142 Rb1+ 30. Kg2)  29... Rc8 30. Rxa5 Rxc7 31. Ra2 Kg7 32. Kg2 Rb4 33. Re2 Kf6 34. Be4 Ra7 35. Re3  (35. h4 $142) 35... Rb2 36. Rf3+ Kg7 37. h4 Rd7 38. Bc6 Rd8 39. Be4 e5 40. h5  $2 (40. g4 {was necessary.}) 40... gxh5 41. Rf5 Rf8 {What a bad dream for  White. Weighted Error Value: White=0.42/Black=0.16} 0-1  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "2.3"] [White "Anton Guijarro, David"] [Black "Svidler, Peter"] [Result "1-0"] [ECO "D85"] [WhiteElo "2667"] [BlackElo "2742"] [Annotator "TA"] [PlyCount "63"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 9,63,16,22,29,26,2,12,0,24,22,17,5,35,21,90,91,108,74,83,78,108,127,127,  125,129,55,41,41,55,42,116,114,190,169,198,46,123,119,122,114,174,164,163,156,  387,238,259,153,264,225,206,220,190,206,229,189]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5  4. cxd5 Nxd5 5. Bd2 Nb6 6. e3 {D85: Exchange Grünfeld: Unusual White 7th moves  and lines with 7 Nf3.} Bg7 {[#]} 7. h4 $146 ({Predecessor:} 7. f4 O-O 8. Nf3 c5  9. dxc5 N6d7 10. Ne4 Bxb2 11. Rb1 Bg7 12. Bc4 Na6 13. Bxa6 bxa6 {1/2-1/2 (29)  Riazantsev,A (2650)-Svidler,P (2765) St Petersburg 2017}) 7... h5 8. Nf3 {  The position is equal.} Bg4 9. Qb3 O-O 10. Ng5 {next Bd3 is good for White.} e5  11. d5 c6 (11... a5 $11 {keeps the balance.}) 12. f3 $16 Bc8 {[%cal Rc6d5]} 13.  dxc6 Nxc6 14. Nce4 Qe7 15. Bb5 Rd8 {[#]} 16. O-O $1 Bf5 17. Rfd1 (17. Rad1 $16)  17... Bxe4 $14 18. Nxe4 Qxh4 19. a4 {[%cal Ba2a4,Ba4a5,Ba5a6][%mdl 32]} Qe7 {  [#]} ({Black should try} 19... Bh6 $14) 20. a5 $1 $16 {[%cal Ra5b6]} Nd7 (20...  Nd5 $16 {was worth a try.}) 21. a6 $36 {[%mdl 2048] Keeping Black busy.} Rab8 {  White must now prevent ...bxa6.} 22. Qa2 $2 (22. Qc2 $18) 22... Nc5 (22... Nb6  $14) 23. Bxc6 $16 bxc6 24. Qa3 {Hoping for Bb4.} Bf8 (24... Rxd2 $16 {was  called for.} 25. Rxd2 Bf8) 25. Bb4 $18 Rxb4 26. Qxb4 Nd3 $2 {A mistake that  costs the game.} (26... Nxa6 $16 {is a better defense.} 27. Qxe7 Rxd1+ 28. Rxd1  Bxe7) 27. Qxe7 Bxe7 28. Rd2 (28. Kf1 $18) 28... f5 (28... Nb4 $16 29. Rc1 Rxd2  30. Nxd2 f6) 29. Nf2 Nb4 {White is clearly better.} 30. Rxd8+ Bxd8 31. Ra4 Nd5  32. Rc4 {Weighted Error Value: White=0.25/Black=0.37} 1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "2.4"] [White "Firouzja, Alireza"] [Black "So, Wesley"] [Result "1-0"] [ECO "D04"] [WhiteElo "2703"] [BlackElo "2741"] [Annotator "TA"] [PlyCount "69"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 9,69,0,-1,-13,-14,-16,-25,0,-25,-23,-13,-29,-28,-16,0,-22,0,0,0,0,0,0,0,  -21,0,0,0,0,-9,0,0,0,0,-10,-2,-61,-33,-38,6,-92,-68,-110,-110,-111,172,0,69,72,  238,234,221,223,689,700,825,614,5165,2453,29996,29997,29997,29998]} 1. d4 Nf6  2. Nf3 d5 3. e3 c5 4. dxc5 e6 5. b4 a5 6. c3 {D04: Colle System.} axb4 7. cxb4  b6 $1 8. Bb5+ {Black has an edge.} Bd7 9. Bxd7+ Nbxd7 10. a4 bxc5 11. b5 Bd6  12. Bb2 O-O 13. O-O Qc7 14. Nbd2 c4 15. Bc3 {[#]} e5 $146 ({Predecessor:} 15...  Rfb8 16. Qc2 e5 17. h3 Rb7 18. Rfb1 Rab8 19. Rd1 {1/2-1/2 (19) Bredenhof,B  (2181)-Petersons,I (2257) ICCF email 2012}) 16. a5 e4 17. b6 Qb8 18. Nd4 Bxh2+  19. Kh1 {Hoping for g3.} Be5 20. Nc6 Qd6 21. Nxe5 Nxe5 22. g3 (22. Bxe5 $11  Qxe5 23. Re1) 22... Nfg4 {( -> ...Qh6+)} 23. Kg2 $1 {Black must now prevent  Nxc4!} Qe6 24. Rb1 (24. Bxe5 $11 {keeps the balance.} Nxe5 25. Nb1) 24... Rfb8  $1 $17 ({And not} 24... Qh6 25. Rh1 $18) 25. Qe2 Nd3 $1 (25... Qh6 26. Rh1 $15)  26. Rb5 {Rxd5! would now be nice for White.} Ra6 $2 {[%mdl 8192] [#]} (26... f5  $1 $17 {Strongly threatening ...Qh6.} 27. Rbb1 Qe8) 27. Nb1 $2 ({Only move:}  27. Rxd5 $1 $18 {[%mdl 512] Rd4 is the strong threat.} Nxe3+ (27... Qxd5 28.  Qxg4) 28. Qxe3 Qxd5 29. Qxe4 Qxe4+ 30. Nxe4) 27... h5 ({Better is} 27... Qd7  $11 28. Na3 Rd8) 28. Bd4 $1 $14 {[#]} h4 $1 {[%mdl 512]} 29. Rh1 $18 (29. gxh4  Qg6) 29... hxg3 ({Wrong is} 29... Ngxf2 $2 30. Rxh4 Qf5 31. Nc3 $18) 30. fxg3  Nh6 $2 (30... f5 31. Nc3 Rd8) 31. Nc3 Qd6 32. Rxd5 Qa3 {[#]} 33. Rxh6 $1 {  [%mdl 576] Remove Defender} gxh6 34. Qg4+ {[%mdl 64] Double Attack} Kf8 35.  Bg7+ {[%mdl 64] Double Attack. Weighted Error Value: White=0.28/Black=0.65}  1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "2.5"] [White "Aronian, Levon"] [Black "Vidit, Santosh Gujrathi"] [Result "1-0"] [ECO "D41"] [WhiteElo "2778"] [BlackElo "2636"] [Annotator "TA"] [PlyCount "106"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 11,106,49,39,-6,-8,-20,10,12,19,13,13,12,12,22,15,15,13,17,12,14,37,33,  75,76,100,98,102,84,93,80,93,99,150,150,179,174,204,127,122,111,145,122,117,  100,245,245,235,226,229,200,205,198,231,237,252,217,337,249,335,296,322,240,  377,336,489,426,526,518,571,558,550,527,550,532,992,992,992,992,991,990,984,  977,1608,1044,5085,928,918,908,1052,1595,1379,1166,2075,1868,29992,29993,29994] } 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 cxd4 6. Qxd4 exd5 7. e3 {  D41: Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5.} Nc6 8. Qd3 $5 {  [%mdl 4] Exploring less charted territory.} Bc5 9. Be2 {The position is equal.}  d4 10. exd4 Nxd4 11. O-O O-O 12. Nxd4 Qxd4 13. Qg3 Ne4 14. Nxe4 Qxe4 15. Bf3  Qb4 16. Bf4 {[#]} Bf5 $146 ({Predecessor:} 16... Be6 17. a3 Qb3 18. Rac1 Bd4  19. Rc7 Qxb2 20. Rxb7 Qxa3 21. Bd6 Qa5 22. Bb4 Qf5 23. Bxf8 Rxf8 {1/2-1/2 (49)  Aronian,L (2802)-Kramnik,V (2800) Moscow 2011}) 17. a3 Qb6 18. Bc7 Qb5 19. b4  Be7 20. Rad1 {Strongly threatening Rd5.} Be6 21. Be5 {[%csl Ge5][%cal Rg3g7]}  g6 {[#]} ({Black should play} 21... f6 22. Bc3 Rf7) 22. Ba1 $1 $16 Rac8 {[#]}  23. Bxb7 $1 {[%mdl 512]} Rc4 ({Not} 23... Qxb7 $2 24. Qe5 $18) 24. Bf3 Qb8 25.  Bd4 $40 {[%mdl 128] White goes for the king.} a6 26. Qxb8 Rxb8 27. Be5 Rbc8 {  Loses the game.} (27... Rd8 $16) 28. Bb7 $18 {[%mdl 64] Double Attack} Re8 29.  Bxa6 Rc2 30. Rc1 Ra2 31. Ra1 Rc2 32. Bb7 Bc4 33. Rfe1 Bg5 (33... Bb5 $142 34.  g3 Bf8) 34. Bc6 Rc8 35. Be4 Rd2 36. h3 Re8 (36... Rd7 $142 37. f4 Be7) 37. Bc3  Rd6 (37... Re2 $142) 38. a4 Rc8 39. Bb7 Rcd8 40. b5 Rd3 41. Ba5 Rb8 42. Bc6 Bb3  43. Bc7 Rf8 44. a5 Bd2 45. a6 Bxe1 46. Rxe1 Rc3 47. a7 Ba4 48. Bb8 (48. Re8  $142 Rxe8 49. Bxe8 Rxc7 50. a8=Q Bxb5 51. Bxb5+ Kg7 52. Qe4) 48... Rxc6 49.  a8=Q {[%mdl 64] And now Qxc6 would win. Double Attack} Bxb5 50. Qb7 Ba4 51. Qb4  Ra6 52. Bf4 {White wants to mate with Bh6.} Bc6 53. Bh6 {[%csl Gh6][%cal Rb4f8] } Rfa8 {Weighted Error Value: White=0.14/Black=0.34} 1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "2.6"] [White "Duda, Jan-Krzysztof"] [Black "Le, Quang Liem"] [Result "1/2-1/2"] [ECO "D41"] [WhiteElo "2774"] [BlackElo "2744"] [Annotator "TA"] [PlyCount "104"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 11,104,33,33,31,29,-6,28,32,39,35,29,21,39,19,19,27,27,7,57,10,12,12,10,  11,41,10,9,0,0,0,0,0,0,0,0,0,0,0,11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,0,-117,0,-117,-118,-417,-417,-417,0,0,0,0,0,-417,0,0,0,0,0,0,0,  0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 cxd4 6. Qxd4 exd5  7. e4 {D41: Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5.} dxe4 8. Qxd8+  Kxd8 9. Ng5 {White has an edge.} Be6 10. Nxe6+ fxe6 11. Bg5 Nc6 12. O-O-O+ {  [%mdl 1024] White has compensation.} Ke8 13. Bb5 Rc8 {[#]} 14. Kb1 $146 ({  Predecessor:} 14. Rhe1 Bb4 15. Bxf6 gxf6 16. Rxe4 Bxc3 17. bxc3 Ke7 18. Ba4 e5  19. Rd3 h5 20. Rh4 {1/2-1/2 (39) Kaan,J (2194)-Galvin,J (2037) ICCF email 2015}  ) 14... a6 15. Ba4 Be7 16. Bxf6 gxf6 17. Nxe4 Rg8 18. g3 (18. Bb3 $5 {[%cal  Rb3e6]} Kf7 19. Nd6+ (19. Rd7 Rcd8 $11) 19... Bxd6 20. Rxd6 $14) 18... f5 $1 {  [%cal Rf5e4]} 19. Bb3 Rg6 $1 ({Not} 19... fxe4 $2 20. Bxe6 Rf8 21. Bxc8 $18)  20. Nd6+ Bxd6 21. Rxd6 Ke7 22. Rhd1 Rd8 23. Rxd8 Nxd8 $11 {[%mdl 4096] Endgame  KRB-KRN} 24. Rc1 Kd7 25. Ba4+ b5 26. Bd1 Nc6 27. Bf3 Nd4 28. Bb7 e5 29. Rc5 Kd6  30. b4 a5 31. f4 exf4 32. Rd5+ Kc7 33. Rxd4 {aiming for Bd5.} fxg3 34. hxg3 {  And now Bd5 would win.} Kxb7 {KR-KR} 35. Rd5 Kc6 36. Rc5+ Kb6 37. a4 bxa4 38.  Rxa5 Rxg3 {Strongly threatening ...f4.} 39. Rxf5 Rh3 {Hoping for ...h5.} 40.  Ka2 (40. Kb2 $11 {remains equal.}) 40... h5 $17 41. Rg5 (41. Rc5 $1 $11 {  was the only way to keep the balance.}) 41... h4 42. Rg4 $2 {[%mdl 8192]} (42.  Rh5 $17) 42... Kb5 $19 43. Rf4 {[#]} Rh1 $2 (43... a3 $1 $19 44. Rd4 Ka4 45.  b5+ Kxb5) 44. Ka3 $1 $11 h3 45. Rh4 Kc6 {...h2 is the strong threat.} (45...  Rh2 {is interesting.} 46. Rh5+ Kc4 47. Rh4+ Kc3 48. b5 Rh1) 46. Rh5 $2 {  [%mdl 8192] [#]} (46. Rh6+ $11 {and White is okay.} Kb5 47. Rh5+ Kc6 48. Rh6+  Kd7 49. Kxa4) 46... Kb6 $2 (46... h2 $1 $19 {( -> ...Ra1+)} 47. Rh6+ Kd5) 47.  Kxa4 {The position is equal.} Ra1+ (47... h2 $5 48. Rh6+ $8 Ka7 $11) 48. Kb3  Rh1 49. Rh6+ Kb5 50. Rh5+ Kb6 51. Rh6+ Kb5 52. Rh5+ Kb6 {Weighted Error Value:  White=0.44/Black=0.34} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "2.7"] [White "Ding, Liren"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "C54"] [WhiteElo "2836"] [BlackElo "2829"] [Annotator "TA"] [PlyCount "74"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 12,74,25,8,25,11,12,11,12,10,22,19,30,24,24,20,33,19,19,0,0,0,4,0,0,0,0,  0,0,-22,-40,-29,0,0,0,0,17,25,21,-72,45,19,25,33,38,0,0,-14,-13,-12,-8,-28,-3,  -5,-5,-5,0,-3,0,0,0,-5,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3  d6 6. O-O h6 {6...a6 is a critical line.} 7. Re1 O-O {C54: Giuoco Piano: 4 c3  Nf6, main lines with 5 d4 and 5 d3.} 8. Nbd2 a5 9. Nf1 Be6 10. Bb5 Ne7 (10...  Bb6 11. Ng3 Ne7 12. h3 Nd7 13. d4 f5 14. dxe5 Nxe5 15. Nd4 Bc8 16. exf5 Nxf5  17. Ngxf5 Bxf5 18. Be3 Bd7 19. f4 Bxd4 20. Bxd4 Bxb5 21. fxe5 Bc6 22. Qg4 dxe5  23. Rxe5 {1-0 (66) Ding,L (2791)-Nakamura,H (2736) chess.com INT 2020}) 11. d4  exd4 12. cxd4 Bb6 13. Ng3 d5 14. e5 Ne4 $1 15. Bd3 Nxg3 16. hxg3 Bg4 {[#]} 17.  Be3 $146 ({Predecessor:} 17. Bc2 c5 18. Be3 cxd4 19. Bxd4 Rc8 20. Rc1 Rc4 21.  Bxb6 Qxb6 22. b3 Rc7 23. Bb1 {1/2-1/2 (44) Carlsen,M (2863)-Nakamura,H (2736)  chess24.com INT 2020}) 17... a4 18. Rc1 Qd7 19. a3 Rfe8 20. Kh2 (20. Qc2 {  is interesting.} Bf5 21. Qd1 c6 22. Be2 Bg4 23. Bd3) 20... Nf5 21. Bb1 Nxe3 22.  Rxe3 Bf5 23. Ba2 c6 24. Nh4 Bh7 25. f4 {[#]} (25. Bb1 $11) 25... Ra5 ({Better  is} 25... g5 $1 $17 {[%cal Rg5h4]} 26. Nf3 gxf4 27. gxf4 Qg4) 26. Bb1 $14 Bxb1  27. Rxb1 Bd8 28. Nf3 (28. Qh5 {is more complex.} Rb5 29. Nf3 Rf8 30. Qh3 Qe6  31. b4) 28... Qg4 29. Ne1 (29. b4 {feels hotter.} axb3 30. Rexb3 b5 31. Qc2 Ra6  32. Rc3) 29... Qxd1 30. Rxd1 Rb5 31. Re2 Bb6 32. g4 {The position is equal.}  Rb3 33. Nd3 Rb5 ({Much weaker is} 33... Bxd4 34. Nc1 $16) 34. Nb4 Ba5 35. Nd3  Bb6 36. Nb4 Ba5 37. Nd3 Bb6 {Weighted Error Value: White=0.12/Black=0.09}  1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "2.8"] [White "Giri, Anish"] [Black "Karjakin, Sergey"] [Result "1-0"] [ECO "D37"] [WhiteElo "2731"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "85"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 9,85,19,20,20,20,0,10,13,21,15,25,29,25,10,12,9,12,9,19,0,16,0,0,0,0,0,  20,6,0,0,37,38,39,33,39,39,39,41,33,54,46,44,106,94,86,79,107,83,124,113,130,  115,142,149,143,140,139,123,235,227,238,231,236,226,263,274,270,270,270,279,  317,259,283,283,282,265,256,255]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5.  Bf4 O-O 6. a3 {D37: Queen's Gambit Declined: 5 Bf4.} b6 7. Qc2 {is the new  trend.} c5 8. Rd1 {The position is equal.} Bb7 9. cxd5 {[#]} Nxd5 $146 ({  Predecessor:} 9... exd5 10. g3 c4 11. Bg2 a6 12. Ng5 h6 13. h4 hxg5 14. hxg5 g6  15. gxf6 Bxf6 {1-0 (31) Basso,P (2603)-Heberla,B (2566) Forni di Sopra 2020})  10. dxc5 Qc8 11. Nxd5 Bxd5 12. e4 Bb7 13. Bd3 Qxc5 14. Qxc5 (14. Qe2 {looks  sharper.} Nc6 15. Bb5 a6 16. Bd3 Qa5+ 17. Bd2) 14... Bxc5 15. O-O Nd7 16. e5  Bd5 17. Bb5 Rad8 18. Bg5 f6 19. exf6 gxf6 20. Bh6 $36 {[%mdl 2048] Black is  under pressure.} Rf7 21. Nd4 Kh8 22. Ne2 Ne5 $1 23. Nf4 {aiming for Nxe6!} Nf3+  $1 24. Kh1 ({Not} 24. gxf3 $2 Rg8+ 25. Ng2 Bxf3 $19) 24... Nd4 25. Nxd5 exd5 {  White now steadily converts the win.} ({Black should play} 25... Rxd5 $14 26.  Bc4 Rd8) 26. Bd3 a5 27. Rfe1 a4 28. h3 Ra7 29. Bb1 Kg8 30. Re3 Nb3 31. Rg3+ Kh8  32. Rf3 Rf7 33. Ba2 f5 (33... Re7 $16) 34. Kg1 d4 35. Bxb3 axb3 36. Rxb3 Ra8  37. Rbd3 {White has a decisive advantage.} Rf6 38. Bc1 b5 39. b4 Bb6 40. Bb2  Kg7 41. Bxd4 Bxd4 42. Rxd4 Rxa3 43. Rd5 {Weighted Error Value: White=0.06/  Black=0.14} 1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "3.1"] [White "Karjakin, Sergey"] [Black "Vachier-Lagrave, Maxime"] [Result "1/2-1/2"] [ECO "B69"] [WhiteElo "2709"] [BlackElo "2860"] [Annotator "TA"] [PlyCount "74"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 25,74,35,39,19,28,9,53,40,43,0,41,31,37,37,30,35,69,22,21,0,0,-25,0,0,0,  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4  cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O a6 9. f4 Bd7 10. Nf3  b5 11. Bxf6 gxf6 12. f5 Qb6 13. Kb1 O-O-O 14. fxe6 {B69: Sicilian:  Richter-Rauzer: 7...a6 8 0-0-0 Bd7 9 f4 Be7 10 Nf3 b5 11 Bxf6.} fxe6 15. g3 b4  16. Ne2 {White is slightly better.} e5 17. Nc1 {[#]} Be6 $146 ({Predecessor:}  17... f5 18. exf5 Bxf5 19. Be2 d5 20. Nb3 Rhf8 21. h3 Rd6 22. g4 Be4 23. Rhf1  Rg6 {0-1 (43) Karlsson,B-Tulegren,O Sweden 1990}) 18. Qh6 Kb8 19. Bh3 Bf7 20.  Nh4 d5 21. Qg7 Rhf8 22. exd5 Bxd5 23. Bg2 Bxg2 24. Nxg2 {The position is equal.  } Qf2 25. Nh4 Rxd1 26. Rxd1 Rc8 {...Nd4 is the strong threat.} 27. Qxh7 Nd4 {  Hoping for ...f5.} 28. Nb3 Rxc2 29. Rxd4 (29. Qxe7 $2 {is a self mate.} Rxb2+  30. Ka1 Rxa2+ 31. Kb1 Qc2#) 29... Rxb2+ {[%mdl 64] Double Attack} 30. Kc1 exd4  31. Qg8+ $1 {[#]} Ka7 $1 {[%csl Gb2][%cal Rf2c2]} 32. Qc4 Bd6 (32... Kb7 $5 33.  Qd5+ $8 {[#]} Kc7 $1 {[%mdl 512]} 34. Qc4+ Kd6 35. Qc5+ Kd7 $1 {[%mdl 512]} 36.  Qd5+ Kc8 $1 {[%mdl 512]} 37. Qc4+ Kb8 38. Qg8+ Kb7 $1 {[%mdl 512]} 39. Qd5+ Kb8  $1 {[%mdl 512]} 40. Qg8+ $11) 33. Qc6 $1 Rxa2 {[%cal Rf2g1]} 34. Qd7+ Ka8 {  [%cal Rf2g1]} 35. Qc6+ Ka7 {[%cal Rf2g1]} 36. Qd7+ Ka8 {[%cal Rf2g1]} 37. Qc6+  Ka7 {Weighted Error Value: White=0.08/Black=0.06} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "3.2"] [White "Nakamura, Hikaru"] [Black "Giri, Anish"] [Result "1/2-1/2"] [ECO "B92"] [WhiteElo "2829"] [BlackElo "2731"] [Annotator "TA"] [PlyCount "89"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 18,89,0,0,0,-22,-18,-25,-14,-19,-18,-41,-31,-54,-58,-65,-58,-64,-55,-78,  -74,-72,-64,-98,-93,-100,-98,-110,-99,-148,-139,-166,-162,-162,-167,-167,-167,  -158,-93,-94,-94,-94,-102,-98,-60,-140,-137,-181,-181,-172,-86,-87,-79,-79,-91,  -139,-97,-100,-102,-127,-122,-121,-113,-180,-87,-112,-93,-81,0,-109,0,-87,0,  -95]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nb3 Nc6  8. Be2 Be7 9. O-O O-O 10. Kh1 Re8 $5 {[%mdl 4] Leaves trodden paths. B92:  Sicilian Najdorf: 6 Be2.} 11. f5 b5 {[#]} 12. Bg5 $146 ({Predecessor:} 12. a3  Bb7 13. Bf3 Rc8 14. Be3 Nb8 15. Qd2 Nbd7 16. Rfe1 Nb6 17. Na5 Ba8 18. Rad1 {  0-1 (36) Beckett,P (1971)-Denham,C ICCF email 2015}) 12... Bb7 {Black has an  edge.} 13. Bxf6 Bxf6 14. Nd5 Nd4 $1 15. c4 Rc8 16. Nxd4 exd4 17. cxb5 axb5 18.  Bd3 Bxd5 19. exd5 b4 20. Qd2 Re3 21. Rae1 Qb6 22. Rc1 Rce8 23. Bc4 h5 24. Rcd1  h4 25. Rfe1 h3 26. gxh3 Qc5 {White must now prevent ...Rxe1+.} 27. b3 d3 (27...  Qc8 $142 28. Rxe3 Rxe3) 28. Rxe3 $17 Rxe3 29. Bxd3 Rxh3 30. Bf1 Rc3 {[%mdl  1024] Black has strong compensation.} 31. Bc4 ({White should try} 31. Bd3 $15)  31... Be5 32. Re1 Rh3 33. Re2 {[#]} Rh5 (33... Rf3 $1 $19 {[%cal Rf3f1] ( -> ..  .Rf1+)} 34. Re4 Qc8) 34. Qd3 Qc8 35. Rf2 Qd8 36. f6 Bxf6 37. Qf3 Rh4 38. Bd3  Qe8 39. Qf5 Be5 40. Qg5 {[#]} (40. Ba6 $17) 40... Rh6 (40... Rd4 $1 $19 {  [%cal Rd4d3] and Black stays clearly on top.} 41. Rf3 g6) 41. Rg2 {aiming for  Qxh6.} Bd4 {And now ...Qe1+ would win.} 42. Re2 {[%cal Re2e8]} Be5 43. Rg2 $1 {  Hoping for Qxh6.} Bd4 {Threatens to win with ...Qe1+.} 44. Re2 {[%cal Re2e8]}  Be5 45. Rg2 $1 {Weighted Error Value: White=0.12/Black=0.20} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "3.3"] [White "Le, Quang Liem"] [Black "Ding, Liren"] [Result "1/2-1/2"] [ECO "E15"] [WhiteElo "2744"] [BlackElo "2836"] [Annotator "TA"] [PlyCount "64"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 17,64,6,8,8,9,0,0,0,0,0,0,-10,-10,-9,-9,-22,18,7,7,7,7,7,7,7,7,7,7,18,  94,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3  Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 O-O 8. Nc3 c6 9. e4 d5 $1 10. exd5 {E15:  Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations.} cxd5  11. Ne5 Bb7 12. O-O Nc6 13. cxd5 Nxe5 {[#]} 14. d6 $146 ({Predecessor:} 14.  dxe5 Nxd5 15. Nxd5 Bxd5 16. Be3 Bxg2 17. Qxd8 Rfxd8 18. Kxg2 Rd5 19. f4 Bc5 20.  Bxc5 Rxc5 {1/2-1/2 (32) Werle,J (2551)-Wojtaszek,R (2744) Novi Sad 2016}) 14...  Nc6 ({Don't go for} 14... Qxd6 $2 15. dxe5 (15. Bxb7 Qxd4 16. Bxa8 Rxa8 $11)  15... Qxe5 16. Bxb7 $18) 15. dxe7 Qxe7 16. Bg5 Rfd8 (16... h6 $5 {[%cal Rh6g5]}  17. Bxf6 Qxf6 $11) 17. d5 h6 18. Bxf6 Qxf6 19. dxc6 Rxd1 20. Rfxd1 Bxc6 21.  Bxc6 Rc8 22. Ne4 Qe5 {[#]} (22... Qf3 $11 23. Bb7 Rb8) 23. Rac1 (23. Bb7 $1 $16  {[%cal Rb7c8]} Rc2 24. Rac1 Rxa2 25. Nd6) 23... Rxc6 $1 $11 {[%mdl 64] Remove  Defender. The position is equal.} 24. Rxc6 {Strongly threatening Nc3.} Qxe4 {  [%mdl 4096] Endgame KQ-KRR} 25. Rc8+ Kh7 26. Rc7 Qe2 27. Rdd7 Qe1+ 28. Kg2 Qe4+  29. Kf1 Qb1+ 30. Kg2 Qe4+ 31. Kf1 Qb1+ 32. Kg2 Qe4+ {Weighted Error Value:  White=0.07/Black=0.09} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "3.4"] [White "Vidit, Santosh Gujrathi"] [Black "Duda, Jan-Krzysztof"] [Result "1/2-1/2"] [ECO "D85"] [WhiteElo "2636"] [BlackElo "2774"] [Annotator "ChessBase"] [PlyCount "157"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "900+10"]  1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:  00:00]} 3. Nc3 {[%emt 0:00:35]} d5 {[%emt 0:00:00]} 4. cxd5 {[%emt 0:00:01]}  Nxd5 {[%emt 0:00:00]} 5. e4 {[%emt 0:00:03]} Nxc3 {[%emt 0:00:00]} 6. bxc3 {  [%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 7. Be3 {[%emt 0:00:04]} c5 {[%emt 0:00:00] } 8. Nf3 {[%emt 0:00:01]} Qa5 {[%emt 0:00:05]} 9. Qd2 {[%emt 0:00:01]} O-O {  [%emt 0:00:02]} 10. Rc1 {[%emt 0:00:07]} Rd8 {[%emt 0:00:06]} 11. h4 {[%emt 0:  00:05]} cxd4 {[%emt 0:00:03]} 12. cxd4 {[%emt 0:00:01]} Qxd2+ {[%emt 0:00:00]}  13. Bxd2 {[%emt 0:00:01]} Nd7 {[%emt 0:00:02]} 14. Be3 {[%emt 0:00:50]} Nb6 {  [%emt 0:00:06]} 15. Bb5 {[%emt 0:01:03]} f5 {[%emt 0:01:34]} 16. Bd3 {[%emt 0:  01:10]} Be6 {[%emt 0:02:29]} 17. h5 {[%emt 0:03:24]} Rac8 {[%emt 0:02:02]} 18.  Rxc8 {[%emt 0:00:10]} Rxc8 {[%emt 0:00:00]} 19. h6 {[%emt 0:01:32]} fxe4 {  [%emt 0:00:44]} 20. Bxe4 {[%emt 0:00:06]} Bf6 {[%emt 0:00:02]} 21. Bxb7 {  [%emt 0:00:37]} Rc7 {[%emt 0:00:49]} 22. Ba6 {[%emt 0:01:33]} Bxa2 {[%emt 0:00:  22]} 23. O-O {[%emt 0:00:38]} Nd5 {[%emt 0:02:09]} 24. Bd2 {[%emt 0:00:04]} Bc4  {[%emt 0:00:16]} 25. Ra1 {[%emt 0:00:04]} Bxa6 {[%emt 0:00:33]} 26. Rxa6 {  [%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 27. Kf1 {[%emt 0:00:32]} Rb7 {[%emt 0:00:  03]} 28. Ke2 {[%emt 0:00:29]} Nc7 {[%emt 0:00:06]} 29. Ra5 {[%emt 0:00:14]} Nb5  {[%emt 0:00:40]} 30. Be3 {[%emt 0:00:18]} Rb6 {[%emt 0:02:35]} 31. d5 {[%emt 0:  00:44]} Nc3+ {[%emt 0:01:12]} 32. Kd3 {[%emt 0:00:03]} Rb5 {[%emt 0:00:03]} 33.  Rxa7 {[%emt 0:00:38]} Rxd5+ {[%emt 0:00:27]} 34. Kc4 {[%emt 0:00:05]} Rd8 {  [%emt 0:00:55]} 35. Ng5+ {[%emt 0:01:44]} Bxg5 {[%emt 0:00:03]} 36. Bxg5 {  [%emt 0:00:00]} Nd5 {[%emt 0:00:07]} 37. Kd4 {[%emt 0:01:31]} Ke6 {[%emt 0:00:  13]} 38. Ke4 {[%emt 0:00:31]} Rb8 {[%emt 0:00:47]} 39. Ra6+ {[%emt 0:00:12]}  Kf7 {[%emt 0:00:07]} 40. f4 {[%emt 0:00:27]} Nc3+ {[%emt 0:00:17]} 41. Kd3 {  [%emt 0:00:10]} Nb5 {[%emt 0:00:09]} 42. g4 {[%emt 0:00:21]} Nd6 {[%emt 0:01:  18]} 43. Ra7 {[%emt 0:00:06]} Rb3+ {[%emt 0:00:01]} 44. Ke2 {[%emt 0:00:26]}  Rb7 {[%emt 0:00:01]} 45. Rxb7 {[%emt 0:00:24]} Nxb7 {[%emt 0:00:00]} 46. Ke3 {  [%emt 0:00:24]} Nd6 {[%emt 0:00:19]} 47. Kf3 {[%emt 0:00:48]} Ke6 {[%emt 0:00:  06]} 48. Bh4 {[%emt 0:00:05]} Kd7 {[%emt 0:00:49]} 49. Be1 {[%emt 0:00:22]} Nf7  {[%emt 0:00:03]} 50. g5 {[%emt 0:00:17]} Ke6 {[%emt 0:00:09]} 51. Bb4 {[%emt 0:  00:02]} Nd6 {[%emt 0:00:08]} 52. Ba3 {[%emt 0:00:13]} Nf5 {[%emt 0:00:31]} 53.  Ke4 {[%emt 0:00:05]} Kd7 {[%emt 0:00:42]} 54. Ke5 {[%emt 0:00:07]} Ng3 {  [%emt 0:00:09]} 55. Bb4 {[%emt 0:00:05]} Ke8 {[%emt 0:00:17]} 56. Ke6 {[%emt 0:  00:12]} Ne2 {[%emt 0:00:10]} 57. Ke5 {[%emt 0:00:06]} Ng3 {[%emt 0:00:11]} 58.  Ke6 {[%emt 0:00:04]} Ne2 {[%emt 0:00:03]} 59. Ke5 {[%emt 0:00:03]} Kf7 {  [%emt 0:00:05]} 60. f5 {[%emt 0:00:36]} gxf5 {[%emt 0:00:00]} 61. Kxf5 {  [%emt 0:00:01]} Nd4+ {[%emt 0:00:03]} 62. Ke4 {[%emt 0:00:03]} Ne6 {[%emt 0:00:  21]} 63. Kf5 {[%emt 0:00:07]} Nf8 {[%emt 0:00:02]} 64. Ke5 {[%emt 0:00:24]}  Nd7+ {[%emt 0:00:20]} 65. Kf4 {[%emt 0:00:23]} e6 {[%emt 0:00:05]} 66. Ke4 {  [%emt 0:00:06]} Kg6 {[%emt 0:00:01]} 67. Be7 {[%emt 0:00:00]} Kf7 {[%emt 0:00:  21]} 68. Bd8 {[%emt 0:00:01]} Nb8 {[%emt 0:00:02]} 69. Bc7 {[%emt 0:00:12]} Nc6  {[%emt 0:00:02]} 70. Bf4 {[%emt 0:00:03]} Kg6 {[%emt 0:00:06]} 71. Bc1 {  [%emt 0:00:02]} Ne7 {[%emt 0:00:14]} 72. Ke5 {[%emt 0:00:03]} Kf7 {[%emt 0:00:  01]} 73. Bd2 {[%emt 0:00:06]} Nc6+ {[%emt 0:00:02]} 74. Ke4 {[%emt 0:00:05]}  Nb8 {[%emt 0:00:09]} 75. Ke5 {[%emt 0:00:04]} Nd7+ {[%emt 0:00:02]} 76. Kd6 {  [%emt 0:00:03]} Nf8 {[%emt 0:00:01]} 77. Bc1 {[%emt 0:00:13]} Ng6 {[%emt 0:00:  02]} 78. Bd2 {[%emt 0:00:04]} Nh4 {[%emt 0:00:59]} 79. Bc1 {[%emt 0:00:04]}  1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "3.5"] [White "So, Wesley"] [Black "Aronian, Levon"] [Result "1-0"] [ECO "E05"] [WhiteElo "2741"] [BlackElo "2778"] [Annotator "TA"] [PlyCount "91"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 18,91,13,18,19,-12,-3,-9,-12,-20,0,0,-1,-8,0,-11,35,-7,0,-4,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,60,50,31,49,108,111,260,257,268,250,248,  253,341,327,428,406,391,408,482,412,441,403,450,416,539,516,547,531,806,798,  1610,1456]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7.  Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bf4 (10. Bg5 h6 11. Bf4 Bd6 12. Nc3 Nbd7 13.  Bd2 Ne4 14. Rfd1 Nb6 15. Qd3 Nxc3 16. bxc3 Bxa4 17. Rdc1 c5 18. c4 Bc6 19. e4  Re8 20. Ba5 {1/2-1/2 (31) So,W (2770)-Aronian,L (2773) chess24.com INT 2020})  10... Bd6 {E05: Open Catalan: 5 Nf3 Be7.} 11. Nc3 Bxf4 12. gxf4 a5 {The  position is equal.} 13. e3 Nbd7 {[#]} 14. Qb3 $146 ({Predecessor:} 14. Kh1 Ra6  15. Rg1 Rb6 16. Qe2 Ne4 17. Qc2 f5 18. Nxe4 Bxe4 19. Qc3 Bxf3 20. Bxf3 {  1/2-1/2 (56) Aronian,L (2767)-So,W (2780) Saint Louis 2018}) 14... Ra6 15. Rfd1  Qe7 16. Qc2 g6 17. Rac1 Bxf3 18. Bxf3 c6 19. b3 Rb6 20. Nb1 Nd5 21. Nd2 Nb4 22.  Qb1 Qh4 23. Be2 Nf6 24. Nf3 Qh3 25. Ng5 Qh4 26. Nf3 Qh3 27. Ne5 Rd8 28. Rc5  Nbd5 {And now ...Nxe3! would win.} 29. Bf1 Qh4 30. h3 Nd7 (30... Ra8 $11) 31.  Nxd7 $14 (31. Rxa5 Nc3 $15) 31... Rxd7 32. Qc2 (32. Rxa5 Nc3 $17) 32... Qd8 ({  Black should play} 32... Nb4 $14 33. Qd2 Rd8) 33. Rxa5 $16 Ra6 {A mistake that  costs the game.} (33... Qh4 $16) 34. Rxa6 $18 ({Less strong is} 34. Bxa6 Qxa5  35. Bc4 Qb4 $14) 34... bxa6 35. Bxa6 ({Resist} 35. Qxc6 $6 a5 $18) 35... Nb4 {  [#]} 36. Qe2 $1 c5 37. Bb5 Rd6 38. Qe1 Nd5 39. Be2 ({Don't go for} 39. dxc5 $2  {[#]} Nxf4 $1 {[%mdl 512]} 40. Be2 Nxe2+ 41. Kh2 Rxd1 $19) 39... Qb6 40. dxc5  Qxc5 41. Bc4 Rc6 42. a5 {[%cal Ba4a5,Ba5a6,Ba6a7][%mdl 32]} Nf6 43. a6 {  White is clearly winning.} Rc8 44. Qd2 Qh5 45. a7 Ra8 {[#]} 46. Qd8+ $1 {  [%mdl 576] Promotion. Weighted Error Value: White=0.07/Black=0.27} 1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "3.6"] [White "Svidler, Peter"] [Black "Firouzja, Alireza"] [Result "1/2-1/2"] [ECO "B10"] [WhiteElo "2742"] [BlackElo "2703"] [Annotator "TA"] [PlyCount "93"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 9,93,15,14,11,31,12,12,12,14,12,12,0,0,0,1,6,0,-112,-113,-127,-120,-141,  -141,-142,-142,-142,-143,-131,-139,-124,-139,-167,-163,-184,-183,-191,-191,  -231,-224,-233,-233,-233,-233,-233,-234,-234,-234,-264,-258,-254,-236,-244,  -116,-123,-117,-137,-137,-124,-114,-147,-147,-145,-145,-172,0,0,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Ne5 Nf6 5. d4  Bf5 6. Bb5+ {B10: Caro-Kann: 2 d3 and 2 c4.} Nbd7 7. O-O a6 8. Bd3 Bxd3 {[#]}  9. Nxd3 $146 ({Predecessor:} 9. Qxd3 e6 10. Nc3 Bd6 11. Qg3 Qe7 12. Bg5 h6 13.  Qh3 O-O-O 14. Bf4 g5 15. Nxd7 Bxf4 {0-1 (27) Efremova,D (1938)-Belenkaya,D  (2181) St Petersburg 2011}) 9... e6 10. Bg5 Bd6 11. Nd2 Qc7 12. g3 O-O 13. Qe2  (13. a3 $11 {remains equal.}) 13... Qxc2 $17 14. Rfc1 Qa4 15. Bxf6 Nxf6 16. Nf3  Rac8 17. a3 Ne4 18. Kg2 h6 19. Qe3 Qb3 20. Nd2 Nxd2 21. Qxd2 Rc4 22. Nc5 {[#]}  Qb5 $1 23. b4 b6 24. a4 Qxb4 25. Qxb4 Rxb4 26. Nxa6 Rxd4 27. Rc6 Be5 28. Ra2  Ra8 29. Rxb6 Rc4 30. a5 g5 (30... Bd4 $19 {is more deadly. Hoping for ...Kh7.}  31. Rb8+ Rxb8 32. Nxb8 Kf8) 31. Nb4 Bd4 32. Rb5 Kg7 33. a6 Ra7 34. Nd3 Rc3 35.  Nb4 Rb3 36. Ra4 {intending Rb7.} Bf6 $2 ({Black should play} 36... Rb2 $19 37.  Rb7 Rxf2+ 38. Kh1 Rf1+ 39. Kg2 Rf2+ 40. Kh1 g4) 37. Rb7 $11 {The position is  equal.} Ra8 {[#]} 38. Nxd5 $1 {[%mdl 512]} Rxa6 $1 (38... exd5 39. Rxb3) 39.  Nxf6 Rxb7 {[%mdl 4096] Endgame KRR-KRN} (39... Rxa4 {keeps more tension.} 40.  Ne8+ Kf8 41. Rxb3 Kxe8 42. Rb8+ Ke7) 40. Ne8+ Kf8 41. Rxa6 {Nd6 is the strong  threat.} Kxe8 {KR-KR} 42. Ra8+ Ke7 43. Rh8 Kf6 44. Rxh6+ Kg7 45. Rh5 f6 (45...  Kg6 $5 {[%cal Rg6h5]} 46. Rh8 Kf5 $11) 46. h4 $1 gxh4 47. Rxh4 {Whites escaped  into a draw. Weighted Error Value: White=0.11/Black=0.08} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "3.7"] [White "Nepomniachtchi, Ian"] [Black "Anton Guijarro, David"] [Result "0-1"] [ECO "A01"] [WhiteElo "2778"] [BlackElo "2667"] [Annotator "TA"] [PlyCount "64"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 9,64,0,-1,-9,-20,-9,-7,-16,0,-6,-18,-37,-41,-33,-17,-27,-14,-6,-6,-66,  -71,-119,-117,-115,-129,-188,-150,-145,-157,-161,-156,-298,-286,-280,-281,-416,  -410,-426,-413,-423,-413,-381,-390,-385,-376,-437,-413,-488,-492,-521,-531,  -489,-498,-499,-499,-1080,-1115]} 1. b3 d5 2. Bb2 Bf5 3. d3 e6 4. Nd2 Nf6 5. g3  {[#]} a5 $146 {[%cal Ba7a5,Ba5a4][%mdl 32]} ({Predecessor:} 5... h6 6. Bg2 Bh7  7. Nh3 c5 8. O-O Nc6 9. e4 Be7 10. exd5 exd5 11. Nf4 O-O {1/2-1/2 (47)  Nepomniachtchi,I (2784)-Aronian,L (2781) Chess.com INT 2020}) 6. a3 {A01:  Nimzowitsch-Larsen Opening.} a4 7. b4 c5 8. c3 {The position is equal.} Be7 9.  Bg2 O-O 10. e4 Bg6 11. Nh3 dxe4 12. dxe4 b5 13. Nf4 Nc6 {[%cal Bb8c6,Bc6e5,  Be5g4][%mdl 32]} 14. h4 (14. Qe2 $11) 14... Ne5 $15 15. Qe2 {[#]} Nh5 $1 {  [%mdl 512]} 16. Bf1 (16. Nxh5 Nd3+) 16... c4 {Strongly threatening ...Nxf4.}  17. Qe3 (17. Nxh5 $17 {keeps fighting.} Nd3+ {[%mdl 64] Double Attack} 18. Kd1  Bxh5 19. Qxh5 Nxf2+ 20. Kc2 Nxh1 21. Qf3) 17... Nxf4 18. gxf4 Ng4 19. Qg3 Nf6  20. Bg2 (20. O-O-O $17) 20... Qc7 21. e5 {[#]} Nh5 $1 {[%cal Rh5g3]} 22. Qg4 (  22. Qh2 $142 Rad8 23. Nf3) 22... Rad8 $19 23. O-O-O f5 24. Qf3 Rd3 25. Qc6 Qxc6  26. Bxc6 Be8 27. Bb7 Nxf4 28. Kc2 Bh5 {Black is clearly winning.} 29. Bc6 Bxd1+  30. Rxd1 Rb8 31. Nf3 Rb6 32. Bd7 (32. Ba8 $142 Rxd1 33. Kxd1) 32... Rxf3 {  Weighted Error Value: White=0.36/Black=0.03} 0-1  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "3.8"] [White "Carlsen, Magnus"] [Black "Radjabov, Teimour"] [Result "1-0"] [ECO "D38"] [WhiteElo "2881"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "55"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 10,55,12,18,20,15,15,14,18,12,18,18,29,14,19,0,0,0,8,0,0,0,0,0,0,0,2,0,  0,0,0,0,0,-15,-27,-9,135,143,128,121,158,158,157,152,152,139,139,121]} 1. d4  Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qb3 c5 6. dxc5 Nc6 {Threatens to win with  ...d4. D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 7. Bg5 Qa5 {  Hoping for ...d4.} 8. Bxf6 dxc4 {The position is equal.} 9. Qxc4 gxf6 10. Rc1  Qxc5 11. Qf4 Ke7 12. g3 Bxc3+ 13. bxc3 Bd7 14. Bg2 Rac8 15. O-O b6 16. Rfd1 Ne5  {[#]} 17. Nd4 $146 ({Predecessor:} 17. Rd4 Bc6 18. Nxe5 Qxe5 19. Bxc6 Rxc6 20.  Rcd1 Qxf4 21. Rd7+ Kf8 22. gxf4 a5 23. R1d3 {1-0 (38) Sjugirov,S (2665)  -Petrosyan,M (2613) Moscow 2019}) 17... Nc4 18. h4 Qc7 {...Qxf4 is the strong  threat.} 19. Qh6 Rcg8 {And now ...e5 would win.} 20. Rb1 Rg6 21. Qh5 Rhg8 22.  Nb5 Qe5 (22... Bxb5 $11 {keeps the balance.} 23. Qxb5 f5) 23. Qxe5 $16 fxe5 24.  Nxa7 Ne3 {[#]} 25. Rd2 $1 {White is clearly better.} ({Wrong is} 25. fxe3 $2  Rxg3 26. Kh1 Rxg2 $19) 25... Nc4 {[#]} 26. Rd3 $1 Rg4 27. Rb4 {Black must now  prevent Bf3.} Na5 28. Rxb6 {Weighted Error Value: White=0.02/Black=0.13} 1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "4.1"] [White "Vachier-Lagrave, Maxime"] [Black "Radjabov, Teimour"] [Result "0-1"] [ECO "B30"] [WhiteElo "2860"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "113"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 16,113,25,27,50,44,31,0,29,0,23,22,35,0,8,8,4,0,0,0,0,0,0,0,11,12,13,0,  8,0,33,0,23,25,48,22,65,57,63,65,69,53,75,34,53,22,27,15,14,0,0,0,0,-44,-42,  -35,-37,-87,-93,-122,-100,-102,-107,-189,-191,-191,-186,-165,-99,-111,-12,-16,  -8,-8,-16,-56,-54,-52,-63,-64,-58,-67,-54,-54,-47,-62,-62,-71,-71,-79,-79,-218,  -218,-337,-335,-493,-475,-493,-483,-456]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O  Nge7 5. Re1 a6 6. Bf1 d5 7. exd5 Nxd5 8. d4 cxd4 9. Nxd4 Bd7 {B30: Sicilian: 2.  ..Nc6 3 Bb5, lines without ...g6.} 10. Nf5 {Qxd5 is the strong threat.} Qa5 {  [#]} 11. Nd2 $146 {Hoping for Nc4.} ({Predecessor:} 11. Bd2 Qc5 12. Ne3 Be7 13.  Nc3 Nxc3 14. Bxc3 e5 15. Nd5 O-O 16. Bxe5 Bh4 17. g3 Nxe5 18. Rxe5 {1-0 (29)  Artemiev,V (2659)-Kholopov,A (2334) Moscow 2015}) 11... Nf6 {The position is  equal.} 12. Bd3 Ne5 (12... O-O-O $5 {[%cal Re6f5]} 13. Nc4 Qc7 $11) 13. Nb3 Qd5  14. Ne3 Qd6 15. Bf1 Qc7 16. Bd2 Bd6 17. Bc3 O-O 18. Qd4 Nc6 19. Qh4 Be5 20.  Bxe5 Nxe5 21. Rad1 Rac8 22. c3 Ng6 (22... Bc6 {with more complications.} 23.  Nd4 Be4 24. Qg3 Rfd8 25. Nec2 h6) 23. Qg3 Qxg3 24. hxg3 Rc7 25. Rd4 e5 26. Rc4  Rfc8 27. Rxc7 Rxc7 28. Nc4 Ng4 29. Rd1 Kf8 30. Be2 Nf6 31. Nb6 Ke7 32. Na5 Be6  33. Bc4 Nf8 34. a4 N8d7 35. Bxe6 Kxe6 36. Nbc4 Nd5 37. Nd2 Nc5 38. Ra1 Nb6 39.  b3 {[#]} (39. Ra3 $17) 39... Nd5 $1 $19 40. b4 Nd3 41. b5 axb5 ({But not} 41...  Rxc3 42. Nxb7 axb5 43. axb5 $17) (41... Nxc3 $19 42. bxa6 bxa6) 42. axb5 $17 b6  ({Black should play} 42... Nxc3 $17 43. b6 Rd7) 43. c4 $1 $11 {[%cal Rc4d5]}  bxa5 44. cxd5+ Kxd5 {Strongly threatening ...Rc1+.} 45. Rxa5 {[%mdl 4096] Endgame KRN-KRN} Rc1+ 46. Nf1 $1 Rb1 47. Ra7 Ke6 ({Weaker is} 47... Rxb5 48.  Rd7+ Kc4 49. Nd2+ Kc3 50. Ne4+ Kc2 51. Rc7+ Kb2 52. Rxf7 $18) 48. Ra6+ Kf5 49.  g4+ Kg5 50. Ra7 Kg6 $1 51. Rb7 Nc5 52. Rb6+ f6 {Threatens to win with ...Ne4.}  53. f3 {[#] Loses the game.} (53. Rd6 $17) 53... e4 $1 $19 {[%cal Re4e3] aiming for ...e3.} 54. Kf2 (54. Rb8 {was called for.}) 54... Nd3+ 55. Ke2 (55.  Ke3 $142 Rxf1 56. Kxe4) 55... Re1+ 56. Kd2 Rxf1 57. fxe4 {Weighted Error Value:  White=0.22/Black=0.12} 0-1  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "4.2"] [White "Anton Guijarro, David"] [Black "Carlsen, Magnus"] [Result "0-1"] [ECO "D45"] [WhiteElo "2667"] [BlackElo "2881"] [Annotator "TA"] [PlyCount "52"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 22,52,10,0,0,-3,-10,-10,-10,-10,-4,-2,-14,-27,-20,-19,-9,-78,-45,-89,  -90,-262,-253,-245,-273,-250,-258,-570,-554,-540,-508,-520,-520]} 1. d4 d5 2.  c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Be2 Bd6 7. O-O O-O 8. Qc2 b6 9. e4  Nxe4 10. Nxe4 dxe4 11. Qxe4 Bb7 12. Rd1 Qc7 {D45: Semi-Slav: 5 e3.} 13. c5 bxc5  14. dxc5 {[#]} Nxc5 $5 $146 {[%mdl 8] The position is equal. An interesting  novelty.} ({Predecessor:} 14... Bxc5 15. Bf4 Nf6 16. Qxh7+ Kxh7 17. Bxc7 Kg8  18. Nd2 Bb6 19. Be5 Rfd8 20. Bf3 Ba6 {1/2-1/2 (70) Leko,P (2705)-Artemiev,V  (2676) Moscow 2015}) 15. Qc2 {Threatening Be3.} Rad8 16. Bg5 Be7 17. Rxd8 Rxd8  18. Rc1 {[#] Bxe7 is the strong threat.} Rd5 19. Be3 (19. b4 $11 {remains  equal.} Rxg5 20. Nxg5 Bxg5 21. Qxc5 Bxc1 22. Qxc1) 19... Nd7 20. Nd4 {[%cal  Rd4c6]} Bc5 $36 {[%mdl 2048] Black is in control.} 21. Nb5 $2 {White does not  recover from this.} (21. Qc3 $17 {was worth a try.}) 21... cxb5 $19 22. b4 {[#] } Qc6 $1 {( -> ...Rd1+!)} 23. Bf3 Bxe3 ({Inferior is} 23... Bxb4 24. Qxc6 Bxc6  25. Rxc6 $11) 24. fxe3 $2 (24. Qxc6 Bxc6 25. Rxc6 Bxf2+ 26. Kxf2 Rd2+ 27. Ke3  Rxa2 28. Rc8+ Nf8 29. Kd4) 24... Qb6 {Black is clearly winning.} 25. Bxd5 Qxe3+  (25... exd5 $2 26. Qc7 $19) 26. Kh1 Bxd5 {Weighted Error Value: White=0.61/  Black=0.03} (26... exd5 $2 27. Qc7 $19) 0-1  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "4.3"] [White "Firouzja, Alireza"] [Black "Nepomniachtchi, Ian"] [Result "1/2-1/2"] [ECO "D85"] [WhiteElo "2703"] [BlackElo "2778"] [Annotator "TA"] [PlyCount "122"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 17,122,0,0,0,0,0,20,10,18,22,15,22,33,27,98,74,93,4,4,4,8,6,7,7,99,100,  102,95,254,255,718,718,710,711,669,676,700,682,1322,1025,5497,5497,5497,5489,  6287,6287,912,533,416,99,478,96,100,9,6,8,8,0,0,0,0,0,0,0,0,0,0,0,0,-19,-15,  -13,0,0,0,0,0,-33,-28,-28,-23,-41,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-8,  -8,-8,-8,-8,-8,-8]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. h3 O-O 5. Nc3 d5 6. cxd5  Nxd5 7. e4 Nxc3 8. bxc3 c5 9. Be2 b6 10. Be3 {D85: Exchange Grünfeld: Unusual  White 7th moves and lines with 7 Nf3.} Bb7 11. Qd3 Qd7 12. O-O Ba6 13. Qd2 Qa4  {[#]} 14. Rac1 $146 ({Predecessor:} 14. Bxa6 Nxa6 15. Bh6 cxd4 16. Bxg7 Kxg7  17. cxd4 Rac8 18. h4 Nb4 19. h5 Rfd8 20. Rad1 Qa5 21. h6+ Kg8 22. d5 e6 23. Qd4  e5 24. Qxe5 f6 25. Qe6+ {1-0 (25) Shipov,S (2593)-Harikrishna,P (2599)  playchess.com INT 2004}) 14... Rd8 15. Bg5 cxd4 (15... Nc6 $11 {keeps the  balance.}) 16. cxd4 $16 Bxd4 17. Bxa6 ({White should try} 17. Nxd4 $16 {  Black must now prevent Rfd1.} Rxd4 {[%mdl 64] Double Attack} 18. Qb2) 17...  Nxa6 $11 18. Bxe7 Rd7 19. Nxd4 Rxe7 20. Nf5 Rd7 (20... gxf5 $2 21. Qg5+ Kf8 22.  exf5 $18) (20... Rxe4 $11 {remains equal.} 21. Nh6+ Kg7) 21. Nh6+ $16 Kg7 22.  Qf4 {And now Ng4 would win.} f5 $2 (22... Nc7 $16) 23. Qg5 $1 $18 ({Weaker is}  23. Nxf5+ gxf5 24. Qe5+ (24. Qxf5 Re8 $17) 24... Kg8 $11) 23... fxe4 $2 (23...  Nc5) 24. Ng4 $1 Kh8 25. Qf6+ $1 Rg7 26. Rc6 $1 Qa3 {[#]} 27. Rd6 $1 {[%cal  Rd6d8]} h5 28. Ne5 {Threatening mate with Rd7.} Kg8 29. Nxg6 Re8 30. Rfd1 {  White wants to mate with Rd8.} e3 31. Rd8 exf2+ 32. Qxf2 Nc7 33. R8d7 $2 (33.  Qf6 $18 {and the rest is easy. Intending R1d7 and mate.} Qe3+ 34. Kh2) 33...  Ne6 $2 {[%mdl 8192]} (33... Qc5 $16 {is more resistant.} 34. Qxc5 bxc5) 34.  Rxg7+ $2 (34. Kh2 $18 {and White stays clearly on top.} Qc3 35. R1d3 Qxd3 36.  Rxd3 Rxg6 {[#]} 37. Qf5 $1 {[%mdl 512]}) 34... Nxg7 $16 35. Nf4 (35. Rd7 $16 {  White threatens Qf7+ and mate.} Qe3 36. Qxe3 (36. Rxa7 Nf5 $16) 36... Rxe3 37.  Rxa7) 35... Rf8 $132 {[%mdl 2048] Black is fighting back} 36. Qd2 Qc5+ 37. Kh1  Qg5 38. Qd5+ Qxd5 39. Nxd5 {[%mdl 4096] Endgame KRN-KRN} Rf2 40. a4 Ra2 41. Rd4  Kf7 42. Re4 Nf5 {Hoping for ...Ng3+.} 43. Kh2 h4 44. Nc3 Ra1 45. Ne2 Kf6 46.  Ng1 a5 47. Rf4 Rb1 48. Nf3 Rb4 49. Rg4 Rxg4 50. hxg4 $15 {KN-KN. The position  is equal.} Nd6 51. Kh3 b5 52. axb5 Nxb5 53. g5+ Kg6 {aiming for ...a4.} 54.  Kxh4 a4 {Strongly threatening ...a3.} 55. Ne5+ Kg7 {...a3 is the strong threat.  } 56. Nc4 a3 {[#]} 57. Nxa3 $1 {[%mdl 512]} Nxa3 58. g6 Nb5 59. g4 Nd6 60. g5  Kxg6 61. Kg3 Kxg5 {White really could win this. Weighted Error Value: White=0.  40/Black=0.33} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "4.4"] [White "Aronian, Levon"] [Black "Svidler, Peter"] [Result "1/2-1/2"] [ECO "B53"] [WhiteElo "2778"] [BlackElo "2742"] [Annotator "TA"] [PlyCount "73"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 9,73,18,18,0,0,0,0,-7,6,0,12,-18,-11,0,-7,0,-9,-25,-23,-35,-35,-37,-37,  -37,-37,-37,-27,-32,-28,-25,-23,-31,-25,-56,-35,-44,0,0,0,0,0,0,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,-8,8,8,8,8,8,8,8,8]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6  5. Qe3 g6 6. Bc4 {B53: Sicilian: 2...d6: Lines with Qxd4.} Bg7 7. h3 Nf6 8. Nc3  O-O 9. O-O Na5 $5 {[%mdl 4] [#] An interesting side line.} 10. Bb3 $146 ({  Predecessor:} 10. Be2 Qc7 11. Rd1 Nc4 12. Qd3 Be6 13. b3 Na5 14. Bd2 a6 15.  Rac1 Nc6 16. Nd5 {1-0 (50) Zubov,A (2607)-Idani,P (2581) Abu Dhabi 2019}) 10...  b6 {[%cal Bb7b6,Bb6b5,Bb5b4][%mdl 32]} 11. Rd1 Nxb3 12. axb3 Qc7 13. Qf4 Bb7  14. Qh4 b5 15. Bg5 b4 16. Nb5 Qxc2 {[%mdl 64] [#] Double Attack} 17. Nxd6 $1  exd6 18. Bxf6 Qxe4 19. Qxe4 Bxe4 20. Bxg7 Kxg7 21. Ne1 a5 22. Rxd6 Rfd8 23.  Rxd8 {The position is equal.} Rxd8 $11 {[%mdl 4096] Endgame KRB-KRN} 24. f3 Bf5  {Strongly threatening ...Rd2.} 25. Rxa5 Rd2 26. Rb5 Rxb2 (26... Re2 $5 27. Kf1  $8 Rxb2 $11) 27. Rxb4 Be6 28. Nd3 Rxb3 29. Rxb3 Bxb3 {KB-KN} 30. h4 h6 (30...  Bc4 $5 {[%cal Rc4d3]} 31. Nc5 Bb5 $11) 31. Kf2 g5 32. hxg5 hxg5 33. f4 Bd5 34.  fxg5 Bxg2 35. Kxg2 {[#] White threatens Nf4 and mate.} Kg6 36. Ne5+ Kxg5 37.  Nxf7+ {Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "4.5"] [White "Duda, Jan-Krzysztof"] [Black "So, Wesley"] [Result "0-1"] [ECO "D37"] [WhiteElo "2774"] [BlackElo "2741"] [Annotator "TA"] [PlyCount "116"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 13,116,9,9,2,3,6,4,13,11,8,6,10,12,10,19,0,0,0,6,0,0,0,0,0,0,0,0,0,0,0,  0,0,0,0,0,-71,-68,-95,-42,-79,-88,-79,-68,-79,-56,-46,-54,-133,-59,-176,-183,  -185,-135,-128,-127,-127,-133,-312,-313,-293,-294,-310,-297,-366,-357,-336,  -227,-389,-332,-340,-340,-327,-295,-380,-233,-240,-232,-247,-235,-216,-168,  -244,-266,-814,-808,-808,-809,-729,0,-237,0,-712,-680,-29975,-29976,-29971,  -29971,-29971,-29972,-5803,-5862,-29984,-29985,-29993,-29994]} 1. d4 Nf6 2. c4  e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 Nh5 8. Bd3 {D37: Queen's  Gambit Declined: 5 Bf4.} Nxf4 9. exf4 b6 10. b4 {The position is equal.} a5 11.  a3 c6 12. O-O Ba6 {is now debated instead of 12...Qc7.} 13. g3 Bf6 14. Qe2 Bxd3  15. Qxd3 Ra7 {[%cal Ba8a7,Ba7b7,Bb7b5][%mdl 32] [#]} 16. Ra2 $146 ({  Predecessor:} 16. Na4 axb4 17. axb4 Qa8 18. Nxb6 Nxb6 19. Rxa7 Qxa7 20. cxb6  Qxb6 21. Rc1 g6 22. Qc3 {1/2-1/2 (42) Sjugirov,S (2662)-Radjabov,T (2758)  Khanty-Mansiysk 2019}) 16... Qa8 {Threatens to win with ...axb4.} 17. Rfa1 Rb8  18. Qc2 Rab7 19. Kg2 bxc5 20. bxc5 Qa6 21. Na4 Rb5 22. Re1 Qb7 23. f5 Nf8 24.  g4 (24. Nb6 $11) 24... Qc7 $17 25. h3 h6 ({Black should try} 25... Rb3 $17 {  ...Rxf3! is the strong threat.} 26. Re3 Rxe3 27. fxe3 exf5 28. gxf5 Re8) 26.  Nc3 R5b7 27. Re3 exf5 28. gxf5 Bg5 29. Nxg5 hxg5 30. Qd1 ({Better is} 30. Rg3  $15) 30... Qf4 (30... g6 $1 $17 31. Rg3 Qf4) 31. Qg4 {[#]} ({White should play  } 31. Rf3 $15 Qh4 32. Rg3) 31... g6 $1 $19 32. Rg3 Rb2 $40 {[%mdl 128] ( -> ...  Qxf2+). Black goes for the king.} 33. Rxb2 Rxb2 34. Qxf4 gxf4 $17 {[%mdl 4096] Endgame KRN-KRN} 35. Rf3 $2 (35. Rd3 $17) 35... gxf5 $19 36. Na4 Rd2 37. Nb6  Rxd4 38. Nc8 {intending Ne7+.} Ng6 {Hoping for ...Nh4+.} 39. Rb3 Kg7 40. Nd6 $2  (40. Na7) 40... Nh4+ 41. Kf1 f3 {[%cal Rd4d1]} 42. Rb1 Rd3 43. a4 Rc3 44. Nb7  Ng6 45. Nxa5 {[#]} Ne5 $1 ({Much less strong is} 45... Rxc5 46. Nb3 $17) 46.  Nb3 Nd3 47. a5 (47. Nd4 {was worth a try.}) 47... Rc2 ({Worse is} 47... Nxc5  48. Nxc5 Rxc5 49. Ra1 $11) 48. a6 $2 (48. Rd1 Rb2 49. Nd2) 48... Rxf2+ 49. Kg1  Rg2+ 50. Kf1 Rf2+ $2 (50... Nf4 51. Nd4 Nxh3 52. Nxf3 Rf2+ {[%mdl 64] Double  Attack} 53. Ke1 Rxf3) 51. Kg1 Rg2+ $2 (51... Re2 52. a7 Re1+ {[%mdl 64] Double  Attack} 53. Kh2 f2) 52. Kf1 Nf4 53. a7 Nxh3 {[%csl Gh3][%cal Rg2g1]} 54. Ke1  Rg1+ 55. Kd2 Rxb1 56. a8=Q f2 57. Qb8 f1=Q 58. Qe5+ Kh7 {Weighted Error Value:  White=0.51/Black=0.28} 0-1  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "4.6"] [White "Ding, Liren"] [Black "Vidit, Santosh Gujrathi"] [Result "1/2-1/2"] [ECO "C77"] [WhiteElo "2836"] [BlackElo "2636"] [Annotator "TA"] [PlyCount "173"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 13,173,-7,-9,-4,1,-25,0,0,8,0,0,-7,0,0,0,0,47,47,47,47,54,47,53,47,46,  56,74,72,76,82,86,85,85,85,85,85,85,85,92,93,93,97,98,102,96,106,120,126,126,  117,123,112,108,68,62,68,88,75,74,81,73,75,78,42,61,40,53,14,11,0,35,0,7,0,42,  35,68,52,52,61,35,32,12,0,18,34,79,82,78,85,110,41,93,78,108,108,108,108,108,  108,108,118,124,108,108,108,116,112,218,143,208,178,558,564,518,533,318,116,  116,116,116,116,116,116,116,116,116,116,116,116,116,116,116,116,116,49,49,49,  49,49,49,49,49,30,30,30,30,30,30,30,30,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3  Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Bxc6 dxc6 6. d3 Bd6 7. Nbd2 {[%cal Bb1d2,Bd2f1,  Bf1e3][%mdl 32]} Be6 8. b3 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.}  Nd7 {[#]} 9. Nf1 $146 ({Predecessor:} 9. Bb2 O-O 10. O-O Qe7 11. Nc4 f6 12. Ne3  Rad8 13. Nf5 Qf7 14. Qe2 Rfe8 15. Rad1 c5 {1/2-1/2 (26) Potapov,P (2489)  -Nesterov,A (2484) Sochi 2019}) 9... a5 10. a4 Bg4 11. Ne3 Bb4+ 12. Kf1 Bxf3  13. Qxf3 Bc3 14. Rb1 Qf6 15. Qxf6 Nxf6 16. Ke2 Nd7 17. Bd2 Bxd2 18. Kxd2 Nc5  19. g3 O-O-O {next ...Nxe4+ is good for Black.} 20. Kc3 b6 21. f4 exf4 22. gxf4  Ne6 23. f5 Nd4 24. Rbf1 Rd7 25. Rf2 c5 26. h4 g6 27. Rg1 Re8 28. h5 Rd6 29.  Rgg2 Nc6 30. fxg6 fxg6 31. Rf7 Re7 32. Rf8+ Kb7 33. Nd5 Red7 $1 34. Nf6 Rd8 35.  Rxd8 Nxd8 36. hxg6 hxg6 $16 {[%mdl 4096] Endgame KRN-KRN} 37. Nd5 Nf7 38. Rf2  Ne5 39. Rf8 Rd7 40. Re8 Nf3 41. Rf8 Ne5 42. Re8 Nf3 $1 43. Rf8 Nd4 44. Rg8 Rh7  45. Rxg6 Rh2 {[%csl Gd4][%cal Rh2c2]} 46. Ne3 Re2 47. Rg3 Kc6 48. Rh3 Kd7 49.  Kb2 Kc6 {[#]} 50. Kc1 $1 Rf2 {[#]} 51. Kd1 $1 Kb7 52. Rh7 (52. Ke1 $16 Re2+ 53.  Kf1) 52... Kc6 (52... Rf3 $14) 53. Rg7 Rh2 54. Rg6+ Kd7 55. Rg2 Rh1+ 56. Kd2  Nf3+ 57. Kc3 Nd4 58. Nd5 Ne6 59. Rf2 Rc1 60. Rh2 Rf1 (60... Nd4 $16 61. Rg2 Kc6  ) 61. Kc4 {Cut Off at move 61} Rc1 (61... Ng5 $16 {is a better defense.} 62.  Rh5 Rg1) 62. c3 Kd6 $2 (62... Ng5 {is tougher.} 63. Rh5 Nf3) 63. Rh6 $18 Kd7  64. Rh7+ Kd6 65. e5+ $2 (65. Nf6 $18 {is more deadly.}) 65... Kxe5 $16 66. Nxc7  Nxc7 67. Rxc7 {aiming for Rc6. KR-KR} Kd6 68. Rh7 Kc6 69. Rh2 Kc7 70. Rh4 Kc6  71. Rh6+ Kc7 72. Rg6 Rc2 73. Rg5 Rc1 74. d4 ({Better is} 74. Rg7+ $16 Kd6 75.  Rg5) 74... cxd4 $14 75. Kxd4 Rb1 76. Kc4 Kc6 77. Rg6+ Kb7 78. b4 axb4 79. cxb4  Rh1 80. Rg7+ Kc6 81. b5+ Kd6 82. Rb7 Rh4+ {The position is equal.} 83. Kb3 Rh3+  84. Kb4 (84. Ka2 $5 {[%cal Rb7b6]} Rh2+ 85. Kb1 Rh1+ 86. Kc2 Rh2+ 87. Kd3 Rh3+  88. Ke4 Rh4+ 89. Kf5 Rxa4 90. Rxb6+ Kc5 91. Rh6 $11) 84... Rh4+ 85. Kb3 Rh3+  86. Kb4 Rh4+ 87. Kb3 {Blacks defense is rewarded with a draw. Weighted Error  Value: White=0.06/Black=0.10} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "4.7"] [White "Giri, Anish"] [Black "Le, Quang Liem"] [Result "1-0"] [ECO "D41"] [WhiteElo "2731"] [BlackElo "2744"] [Annotator "TA"] [PlyCount "121"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 11,121,24,18,26,26,-12,27,31,35,38,37,4,16,9,10,8,19,10,25,18,56,59,68,  73,67,65,92,16,20,13,17,21,16,23,30,34,29,25,28,18,26,24,36,35,40,37,29,41,42,  29,36,36,37,25,40,24,33,27,43,43,43,43,43,48,61,51,68,68,68,59,84,97,269,260,  296,128,352,352,352,351,415,409,499,391,579,537,762,617,587,583,528,518,1257,  1141,939,464,29967,29966,29974,29976,29978,29979,29980,29981,29981,29982,29982,  29983,29984,29982,29983,29983]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5  cxd4 6. Qxd4 exd5 7. e4 {D41: Queen's Gambit Declined: Semi-Tarrasch with 5  cxd5.} dxe4 8. Qxd8+ Kxd8 9. Ng5 {[%mdl 64] [#] Double Attack. White has an  edge.} Be6 10. Nxe6+ fxe6 11. Bd2 $5 {[%mdl 4] A promising side line.} Nc6 {[#] } 12. O-O-O $146 ({Predecessor:} 12. Rd1 Ke7 13. Bb5 Nd4 14. Ba4 e5 15. O-O a6  16. Rde1 b5 17. Bd1 Rd8 18. Bc1 {0-1 (57) Rajkovic,D (2215)-Nonkovic,B (2061)  Belgrade 2014}) 12... Ke8 13. Bb5 Rc8 14. Rhe1 Kf7 15. Kb1 Nd4 16. Bf1 Be7 17.  Nxe4 Nxe4 18. Rxe4 Rhd8 19. Rc1 (19. g4 $16) 19... Rxc1+ $11 20. Bxc1 Bf6 21.  Re1 a6 22. Rd1 Nc6 23. Rxd8 Bxd8 {[%mdl 4096] Endgame KBB-KBN} 24. Be3 Bf6 25.  Bd2 Ke7 26. Bd3 h6 27. Be4 Kd6 28. Kc2 b6 29. b4 b5 30. a3 Kc7 31. f4 Nd8 32.  Bg6 e5 33. Be4 exf4 34. Bxf4+ Kd7 35. Bf5+ Kc6 36. Bc8 Nb7 37. Kb3 Bd4 38. a4  bxa4+ 39. Kxa4 Kb6 40. Kb3 Kc6 41. h4 Kb6 $2 {[#]} (41... h5 $16) 42. h5 $18  Bf6 43. Bh2 (43. Kc4 $18 {is the precise move to win.}) 43... Nd8 $2 {A  mistake that costs the game.} (43... Kc6 $16 44. g4 Kb6) 44. Bg1+ Kc7 45. Bxa6  Ne6 46. Kc4 Nf4 47. g4 Be5 (47... Ne2 {was called for.}) 48. b5 {[%cal Bb4b5,  Bb5b6][%mdl 32]} g6 49. hxg6 Nxg6 50. Kd5 Bg3 51. b6+ Kb8 (51... Kd7 $142 52.  Be3 Ne7+ 53. Kc5 Bd6+ 54. Kb5 Ng6) 52. Ke4 Ne5 53. Kf5 Nf3 (53... Nf7 $18 54.  Be3 Bh2) 54. Be3 {White mates.} Nh4+ 55. Ke4 Ng6 56. Bxh6 Bf2 57. Be3 Bxe3 58.  Kxe3 Ne5 59. g5 Nd7 60. b7 Ka7 61. g6 {Weighted Error Value: White=0.12/  Black=0.33} 1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "4.8"] [White "Karjakin, Sergey"] [Black "Nakamura, Hikaru"] [Result "0-1"] [ECO "C28"] [WhiteElo "2709"] [BlackElo "2829"] [Annotator "TA"] [PlyCount "64"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 12,64,6,8,23,19,20,12,18,19,26,19,17,16,42,18,18,20,59,60,58,2,3,0,-11,  -22,-9,-51,-31,-212,-205,-219,-211,-300,-307,-395,-412,-610,-436,-519,-509,  -1082,-1065,-961,-918,-1812,-1759,-1734,-1712,-1719,-1731,-1571,-1567,-1315,  -1071]} 1. e4 e5 2. Bc4 Nc6 3. Nc3 Nf6 4. d3 Bb4 5. Nf3 d6 6. O-O Bxc3 7. bxc3  Be6 {C28: Vienna Game: 2...Nf6 3 Bc4 Nc6.} 8. Bb3 h6 9. Re1 O-O {The position  is equal.} 10. h3 {[#]} Ne7 $146 ({Predecessor:} 10... Qe7 11. Ba3 Nh7 12. Qe2  Rad8 13. d4 Bxb3 14. cxb3 a6 15. Rad1 f5 16. d5 fxe4 17. Qxe4 {0-1 (27) Srba,D  (1145)-Ruzicka,O (1168) Kouty nad Desnou 2020}) 11. Nh4 c5 12. Qf3 Kh7 13. g4  Nfg8 14. g5 c4 15. dxc4 Rc8 16. Nf5 (16. Rb1 $14) 16... Qd7 17. c5 dxc5 {  aiming for ...c4.} 18. Rd1 Qc6 {Strongly threatening ...Nxf5.} 19. Nxe7 Nxe7  20. gxh6 $2 {[#] Now White is beyond hope.} ({White should play} 20. Bxe6 $15  Qxe6 21. Qg4) 20... c4 $1 $19 21. hxg7 Kxg7 22. Ba3 (22. Qh5 $142 Rh8 23. Qxe5+  f6 24. Qd6 (24. Qg3+ $2 Kf7 $19)) 22... Ng6 23. Bxf8+ Rxf8 24. h4 (24. Bxc4  $142 Qxc4 25. Rd3) 24... Nxh4 {Black is clearly winning.} 25. Qg3+ Ng6 26. f3 (  26. Rd2 $142 cxb3 27. axb3) 26... cxb3 27. axb3 Rh8 28. c4 Qc5+ 29. Kf1 Kf6 {  [#] ( -> ...Nf4)} 30. Qg1 Bh3+ 31. Ke2 Nf4+ 32. Kd2 Rd8+ {Weighted Error Value:  White=0.67/Black=0.13} 0-1  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "5.1"] [White "Nakamura, Hikaru"] [Black "Vachier-Lagrave, Maxime"] [Result "1/2-1/2"] [ECO "B68"] [WhiteElo "2829"] [BlackElo "2860"] [Annotator "TA"] [PlyCount "92"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 26,92,24,24,50,40,41,32,42,29,20,17,23,22,22,21,25,21,20,17,22,22,25,27,  27,8,8,8,8,0,0,0,0,0,0,-8,21,17,48,49,107,110,106,100,104,89,109,107,93,51,58,  51,69,32,45,22,23,23,22,26,33,0,18,0,29,0,0,0,30]} 1. e4 c5 2. Nf3 d6 3. d4  cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7 10. Nf3  b5 11. e5 b4 12. exf6 bxc3 13. Qxc3 gxf6 14. Bh4 Rg8 {B68: Sicilian:  Richter-Rauzer: 7...a6 8 0-0-0 Bd7 9 f4 Be7 .} 15. Kb1 Rb8 {[#]} 16. h3 $146 ({  Predecessor:} 16. Rg1 Qb6 17. Be2 f5 18. Bxe7 Kxe7 19. b3 Rgc8 20. Qg7 Nb4 21.  Ng5 Be8 22. Nxh7 {1/2-1/2 (29) Volokitin,A (2634)-Salgado Lopez,I (2624)  Germany 2018}) 16... Qa5 {[#] White must now prevent ...Qxc3.White is slightly  better.} 17. Qxa5 Nxa5 18. Bxa6 Rxg2 19. Rhg1 Rg6 $1 20. f5 exf5 21. Bg3 Nc6  22. Bxd6 Bxd6 23. Rxd6 Rxg1+ 24. Nxg1 Ke7 25. Rd1 f4 26. Rf1 Rg8 27. Ne2 Bxh3  28. Re1 f3 {And now ...f2 would win.} 29. Ng1+ Be6 30. Nxf3 Nb4 31. Bb5 Nxa2  32. c3 Rg3 (32... Rc8 $14) 33. Nd4 $16 {Strongly threatening Nf5+.} Nxc3+ {[#]}  34. Kc2 $1 Nxb5 35. Nf5+ $1 {[%mdl 64] Double Attack} Kd7 36. Nxg3 {[%mdl 4096] Endgame KRN-KBN} f5 37. Rf1 {[%mdl 1024] White has strong compensation.} Kd6  38. Kd3 ({But not} 38. Nxf5+ $2 Bxf5+ 39. Kd2 Ke5 $19) 38... Ke5 39. Nh5 Bd5  40. Rc1 Nd4 41. Rc5 {Threatens to win with Nf6!} Nb3 42. Rb5 {Hoping for Nf4!}  Nd4 43. Rb8 Ne6 44. Rb5 Nd4 $1 {[%cal Rd4b5]} 45. Rc5 Nb3 $1 {[%cal Rb3c5]} 46.  Rb5 {aiming for Nf4!} Nd4 {Weighted Error Value: White=0.07/Black=0.06} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "5.2"] [White "Le, Quang Liem"] [Black "Karjakin, Sergey"] [Result "1-0"] [ECO "B67"] [WhiteElo "2744"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "99"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 20,99,47,32,41,37,31,32,27,0,0,0,0,0,0,0,0,0,0,0,45,32,44,34,82,72,70,  87,194,57,346,332,389,391,359,330,329,325,359,349,374,359,379,363,368,370,375,  362,353,364,440,431,764,782,912,664,768,770,6412,770,2091,999,29990,759,1155,  691,6211,770,770,763,763,763,763,763,763,762,750,595,750,742,741,741]} 1. e4 c5  2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9.  f3 Nxd4 {now scores much better than the old 9...Be7.} 10. Qxd4 Be7 11. h4 h6 {  B67: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7, lines without 9 f4 Be7.} 12.  Be3 h5 13. Bg5 Qc7 {White is slightly better.} 14. Kb1 b5 {[%cal Bb7b5,Bb5b4] [%mdl 32]} 15. Qd2 b4 16. Ne2 a5 {[#]} 17. Nf4 $5 $146 {[%mdl 8] An  interesting novelty.} ({Predecessor:} 17. Nd4 Rb8 18. g3 a4 19. Bh3 O-O 20. g4  hxg4 21. Bxg4 a3 22. Rhg1 Rfc8 23. Qg2 axb2 {0-1 (33) Kriebel,T (2515)  -Czarnota,P (2556) Legnica 2017}) 17... Rb8 18. Rc1 a4 19. c4 bxc3 20. Rxc3 Qb6  21. Bc4 Bc6 {and if ...Bxe4+ works, Black does fine.} 22. Qc2 {Hoping for Bxe6.  } Bd7 23. Rd1 g6 (23... Qa5 $16 {might work better.}) 24. Nd3 (24. Bxe6 $1 $18  Bxe6 25. Nxe6 fxe6 26. e5) 24... d5 $2 {[%mdl 8192] Loses the game.} ({Black  should play} 24... Qa5 $14) 25. Ne5 $1 $18 {[%cal Re4d5]} Rd8 26. exd5 exd5 27.  Nxd7 Rxd7 {[#]} 28. Bxd5 $1 {[%mdl 512]} Kf8 (28... Rxd5 29. Rxd5) 29. Rc8+ ({  Not} 29. Qxa4 Rxd5 30. Rxd5 Nxd5 $16) 29... Kg7 30. Rxh8 $1 Kxh8 31. Bxf7 Rxd1+  32. Qxd1 Kg7 33. Bc4 a3 {[%csl Ga3][%cal Rb6b2]} 34. Qe2 Bb4 35. Qe5 axb2 (  35... Qd6 $142 36. Qxd6 Bxd6) 36. Be3 Qd8 37. Bd4 Bd6 {[#]} 38. Qd5 $1 {  Threatening mate with Qf7+.} Qf8 39. Qe6 (39. g4 $142 Be7 40. gxh5) 39... Be7  40. a4 (40. g4 $142) 40... Qd8 41. Qd5 (41. Qf7+ $142 Kh8 42. Bd5 Qc8 43. Bxb2  Qb8 44. Bc4 Qd8 45. Bb3 Qd3+ 46. Ka2 $1 {[%mdl 512]}) 41... Qe8 {White is  clearly winning.} 42. Bb3 Kh8 {[#]} 43. Bxb2 (43. Qe4 $142 $1 Qf8 44. Qxg6)  43... Kh7 44. Qf7+ Qxf7 45. Bxf7 {KBB-KBN} Nd7 46. a5 Bxh4 47. Bd4 {Strongly  threatening a6.} Nb8 48. Be8 Bd8 49. Bb5 Bxa5 50. Be5 {Weighted Error Value:  White=0.44/Black=0.75} 1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "5.3"] [White "Vidit, Santosh Gujrathi"] [Black "Giri, Anish"] [Result "0-1"] [ECO "D85"] [WhiteElo "2636"] [BlackElo "2731"] [Annotator "TA"] [PlyCount "186"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 25,186,6,13,0,0,0,13,0,14,0,0,-2,0,-16,-17,-19,0,-8,0,-18,-20,-33,0,0,  -6,-108,0,-54,-54,-45,0,-24,0,0,0,0,0,0,0,0,0,-83,-80,-81,-72,-87,-98,-98,-73,  -73,-80,-165,-145,-207,-8,-11,-8,-12,-16,-9,-8,-8,-8,-8,-5,-6,-6,-8,-8,-8,0,  -16,-16,-16,-16,-27,-27,-48,-15,-15,-15,-15,-15,-15,-15,-15,-15,-15,-15,-15,  -15,-15,-15,-15,-15,-15,-15,-15,-15,-15,-15,-15,-15,-16,-16,-16,-15,-16,0,-16,  -16,-16,-16,-16,-16,-16,-15,-52,-16,-16,-16,-16,-15,-16,-16,-16,-16,-16,-16,  -16,-16,-16,-16,-16,-16,-16,-16,-65,-65,-73,-54,-29980,-29981,-29981,-29982,  -29982,-29983,-29983,-29984,-29984,-29985,-29985,-29986,-29986,-29987,-29987,  -29988,-29988,-29989,-29989,-29990,-29990,-29991]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5  4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Be3 Qa5 9. Qd2 Nc6 10. Rb1 a6  11. Rc1 cxd4 12. cxd4 Qxd2+ 13. Kxd2 e6 14. h4 {D85: Exchange Grünfeld:  Unusual White 7th moves and lines with 7 Nf3.} O-O 15. Bd3 h6 16. Rb1 {The  position is equal.} Rd8 17. e5 b5 18. Rhc1 Bd7 19. Be4 Rac8 {[#]} 20. Ke1 $146  ({Predecessor:} 20. Ke2 Bf8 21. Rc2 Nb4 22. Rxc8 Rxc8 23. Rb2 Bc6 24. Bxc6 Rxc6  25. Bd2 Nd5 26. Kd3 {1-0 (44) Vidit,S (2726)-Sychev,K (2572) chess.com INT 2020  }) 20... Na5 21. Nd2 Bc6 22. f3 Bf8 23. Ke2 Kg7 24. Nb3 Nc4 25. Nd2 (25. Bxc6  $11 {remains equal.} Rxc6 26. Nd2) 25... Na5 (25... Bxe4 $17 26. Nxe4 Ba3) 26.  Kd1 (26. Nb3 $1 $11 Bxe4 27. Rxc8 Rxc8 28. fxe4 Rc2+ 29. Kd3 Rxa2 30. Nxa5 Rxa5  31. d5) 26... Be7 27. g3 f6 28. Ke2 fxe5 29. dxe5 Ba3 {White must now prevent .  ..Bxe4.} 30. Rd1 {aiming for Bb6.} Bxe4 31. Nxe4 {Strongly threatening Rxd8.}  Rc2+ 32. Kf1 Rd5 $1 33. Rxd5 (33. Nf6 $11 {keeps the balance.} Rxe5 34. Ng4)  33... exd5 $17 34. Nf6 Nc4 35. Bf4 g5 36. hxg5 hxg5 37. Bxg5 Nxe5 38. Rb3 (38.  Nxd5 $17 {might work better.} Nxf3 39. Rb3 Nh2+ 40. Ke1 Rxa2 41. Be7) 38... Bc5  $1 $19 {And now ...Rf2+ would win.} ({Don't play} 38... Rxa2 39. Nxd5 Nc4 40.  Bf4 $15) 39. f4 (39. Ke1 $17 {keeps fighting.}) 39... Rf2+ $2 ({Better is}  39... Nc4 $1 $19 {[%cal Rc4d2]} 40. Ke1 Kg6) 40. Ke1 $11 Nf3+ 41. Kd1 {With  the idea Ng4.} Nxg5 (41... Nd4 $5 42. Rd3 $8 Rxa2 $11) 42. fxg5 {[%mdl 4096] Endgame KRB-KRN} Be7 43. Nxd5 Bxg5 {...Rd2+ is the strong threat.} 44. Nb4 Rd2+  45. Ke1 a5 46. Nc6 Rxa2 47. Rxb5 {[%mdl 64] Double Attack} Bf6 (47... Be3 {  with more complications.} 48. Re5 Bh6 49. g4 Kg8 50. Rh5 Bg7) 48. Nxa5 Bc3+ 49.  Kd1 Bxa5 {KRB-KR} 50. Rb7+ Kf6 51. Ra7 Ke5 52. g4 Kd4 53. g5 Kd3 {[%cal Ra2a1]}  54. Rd7+ Kc4 55. Ra7 Kb5 56. g6 Rd2+ 57. Kc1 {White threatens Rxa5+! and mate.}  Rg2 58. g7 Bc3 (58... Bb4 {seems wilder.} 59. Ra8 Rg1+ 60. Kc2 Rxg7 61. Rc8  Rg2+) 59. g8=Q Rxg8 60. Kc2 Bd4 61. Rc7 {Cut Off at move 61} Rg3 62. Rc8 Bc5  63. Kd2 Kc4 64. Ke2 Ra3 65. Rc7 $1 Kd5 66. Rc8 Kc4 67. Rc7 Kd4 68. Rc8 Be7 69.  Rc2 Bf6 70. Rd2+ Ke4 71. Kf1 Bd4 (71... Bg5 {looks sharper.} 72. Rb2 Ke3 73.  Re2+ Kd3 74. Re5 Be3) 72. Ke2 Bc3 73. Rc2 Be5 74. Rc4+ Bd4 75. Rc2 Bc3 76. Kd1  Kf3 77. Rc1 Ke3 78. Kc2 Kd4 79. Rd1+ Kc4 80. Rd8 $1 Ra2+ 81. Kb1 Rh2 82. Kc1  Bd4 {( -> ...Kd3)} 83. Kd1 $2 {[%mdl 8192] Loses the game.} (83. Rf8 $15) 83...  Kd3 {[%cal Rh2h1] Black mates.} 84. Re8 Rb2 {[%cal Rb2b1]} 85. Rc8 Bb6 86. Rc6  Be3 87. Rd6+ Bd4 {[%cal Rb2b1]} 88. Rc6 Rg2 {[%cal Rg2g1]} 89. Re6 Rd2+ 90. Ke1  Rb2 {[%cal Rb2b1]} 91. Kf1 {[#]} Rf2+ $1 92. Ke1 {[#]} Rf5 $1 93. Rd6 Rg5 {  Weighted Error Value: White=0.16/Black=0.15} 0-1  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "5.4"] [White "So, Wesley"] [Black "Ding, Liren"] [Result "1/2-1/2"] [ECO "E32"] [WhiteElo "2741"] [BlackElo "2836"] [Annotator "TA"] [PlyCount "72"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 11,72,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,5,0,0,0,0,0,0,0,-9,-16,15,15,5,  0,0,-30,-41,-35,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4  Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 d5 6. e5 Ne4 $1 7. Nf3 {E32:  Nimzo-Indian: Classical (4 Qc2): 4...0-0.} c5 $1 8. Bd3 cxd4 9. Nxd4 Nd7 10.  Bf4 Qh4 11. g3 Qh5 12. O-O g5 13. cxd5 Bxc3 14. bxc3 exd5 15. Be3 Nxe5 16. f3  Nc5 17. Bf5 Ne6 {[#]} 18. g4 $146 ({Predecessor:} 18. Rae1 Nxd4 19. Bxd4 Nc6  20. Be3 Re8 21. g4 Bxf5 22. Qxf5 Qg6 23. Qxg5 Rad8 24. Qf4 {1/2-1/2 (56) Perez  Ponsa,F (2559)-Della Morte,G (2369) Buenos Aires 2020}) 18... Qh6 19. Rae1 Nxd4  20. Bxd4 Nc6 21. Bc5 Rd8 $1 22. Be7 (22. Be3 {seems wilder.} Qg7 23. Bd2 f6 24.  f4 gxf4 25. h3) 22... Nxe7 23. Rxe7 Bxf5 24. Qxf5 {The position is equal.} Qg6  25. Qxg6+ hxg6 $11 {[%mdl 4096] Endgame KRR-KRR} 26. f4 d4 27. fxg5 dxc3 {  White must now prevent ...c2.} 28. Rfxf7 {With the idea Rg7+.} c2 29. Rg7+ {  [%mdl 64] [#] Double Attack} Kh8 30. Rh7+ Kg8 31. Reg7+ Kf8 32. Rc7 {[%cal  Rh7h8]} Kg8 33. Rhg7+ Kh8 34. Rh7+ Kg8 35. Rhg7+ Kh8 36. Rh7+ Kg8 {Weighted  Error Value: White=0.02/Black=0.02} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "5.5"] [White "Svidler, Peter"] [Black "Duda, Jan-Krzysztof"] [Result "1/2-1/2"] [ECO "D78"] [WhiteElo "2742"] [BlackElo "2774"] [Annotator "TA"] [PlyCount "101"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 15,101,4,1,-11,0,0,0,0,2,7,28,5,36,40,50,42,53,54,41,4,-5,15,-4,14,0,  -24,-23,-39,-43,-31,-9,-14,0,0,0,0,0,0,0,0,0,0,53,58,59,17,21,8,8,8,7,5,10,0,0,  0,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,0,-8,0,-8,8,8,  8,8,8,8]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c4 c6 7. Qb3  Qb6 8. Nc3 Rd8 9. Rd1 {D78: Fianchetto Grünfeld: 6 0-0 c6.} Be6 10. c5 Qxb3 11.  axb3 Na6 12. h3 {[#]} Ne8 $146 ({Predecessor:} 12... Bf5 13. Ra3 Nd7 14. g4 Be4  15. Bg5 f6 16. Bh4 e5 17. e3 Bxf3 18. Bxf3 Nc7 {0-1 (35) Deshpande,A (2194)  -Laylo,D (2430) Ho Chi Minh City 2019}) 13. Bf4 f6 14. g4 g5 15. Bg3 Bf7 16. e3  h5 17. Rxa6 bxa6 18. Ra1 hxg4 19. hxg4 Be6 20. Ne1 Bxg4 21. Nd3 Bd7 22. Rxa6 e6  23. b4 Rdc8 24. b5 cxb5 25. e4 dxe4 $1 26. Bxe4 {[#] c6 is the strong threat.}  f5 $1 {[%cal Rf5e4]} 27. Bxa8 Rxa8 28. Be5 Bc8 ({Black should play} 28... Bxe5  $11 29. Nxe5 Nc7) 29. Ra5 $14 Bb7 30. Bxg7 ({Don't go for} 30. Rxb5 $2 Ba6 $19)  30... Kxg7 {The position is equal.} 31. Ne5 ({Don't blunder} 31. Rxb5 $2 Ba6  $19) 31... a6 32. c6 Bc8 $1 33. Nxb5 Rb8 34. Na7 Nc7 35. Ra3 Ra8 36. Nxc8 Rxc8  $11 {[%mdl 4096] Endgame KRN-KRN} 37. Rg3 g4 38. f3 Nb5 39. fxg4 Nxd4 40. Rd3  Nxc6 41. Rc3 Ne7 {aiming for ...Rxc3.} ({Much worse is} 41... Nxe5 $6 42. Rxc8  Nxg4 43. Rc6 $16) 42. Rxc8 Nxc8 43. gxf5 {KN-KN} Kf6 44. Nd7+ Kxf5 {  Threatening ...a5.} 45. b4 e5 46. Nc5 e4 47. Kf2 Nb6 48. Nxa6 e3+ {[%mdl 64] [#] Decoy} 49. Kxe3 Nd5+ 50. Kd4 Nxb4 51. Nxb4 {Weighted Error Value: White=0.  05/Black=0.05} 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "5.6"] [White "Nepomniachtchi, Ian"] [Black "Aronian, Levon"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2778"] [BlackElo "2778"] [Annotator "TA"] [PlyCount "28"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 27,28,0,2]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. dxe5  Nxb5 7. a4 Nbd4 8. Nxd4 d5 9. exd6 Nxd4 10. Qxd4 Qxd6 {[#]} 11. Qe4+ $146 ({  Predecessor:} 11. Qe3+ Be6 12. Nc3 a6 13. Rd1 Qc5 14. Qg3 f6 15. Bf4 Rc8 16.  Re1 Kf7 17. Rxe6 Kxe6 18. Qh3+ f5 19. Ne4 Qd5 20. Nc3 Qd7 21. Rd1 Bd6 22. Rd5  g6 23. Ne4 Kxd5 24. Qb3+ Kc6 25. Qc4+ Kb6 {0-1 (25) Andreikin,D (2726)  -Nakamura,H (2736) chess.com INT 2020}) 11... Qe6 12. Qd4 Qd6 13. Qe4+ Qe6 14.  Qd4 Qd6 1/2-1/2  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "5.7"] [White "Carlsen, Magnus"] [Black "Firouzja, Alireza"] [Result "1-0"] [ECO "D35"] [WhiteElo "2881"] [BlackElo "2703"] [Annotator "TA"] [PlyCount "127"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 15,127,16,18,12,20,9,30,28,22,30,23,34,32,21,52,39,47,38,76,70,79,91,86,  89,84,84,132,116,118,120,118,112,121,107,124,123,120,124,138,122,193,206,204,  194,208,218,269,256,250,190,190,188,293,215,233,234,210,164,232,191,240,237,  232,197,310,299,284,289,435,461,449,441,438,423,382,378,475,475,470,454,385,  364,1013,834,1106,1075,29957,5625,29966,29967,29962,29960,29967,29970,29974,  29975,29974,29975,29981,29982,29982,29983,29983,29984,29984,29985,29985,29985,  29985,29986,29987,29988,29988,29989]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5  5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 O-O 9. Bg3 $5 {[%mdl 4] Leaves trodden  paths. D35: Queen's Gambit Declined: Exchange Variation.} Nbd7 10. h3 Re8 11.  Nf3 {White has an edge.} Bb4 {[#]} 12. Qb3 $146 ({Predecessor:} 12. Qc2 Ne4 13.  Bh2 Qf6 14. O-O Ng5 15. Ne5 Nxe5 16. Bxe5 Nf3+ 17. gxf3 Qxf3 18. Qe2 Qxh3 {  1-0 (65) Furman,B (2279)-Jelen,P (2173) Tatranske Zruby 2001}) 12... c5 13. O-O  Bxc3 14. Qxc3 ({Avoid the trap} 14. bxc3 $2 c4 $19) 14... c4 15. Bc2 a5 16. a4  Qb6 17. b3 Ne4 18. Bxe4 dxe4 19. Nd2 cxb3 20. Rfb1 Qg6 21. Rxb3 Nf6 22. Rb5 Be6  23. Rxa5 Nd5 24. Rxa8 Rxa8 25. Qb3 b6 {[#]} 26. Kh2 $1 h5 {White must now  prevent ...h4!} 27. Qb5 Rc8 {[#]} (27... Qf5 $16 {might work better.}) 28. a5  $1 $18 {[%cal Ra5b6]} bxa5 29. Rxa5 Kh7 30. Qb1 Nc3 31. Qb7 Bf5 32. Rc5 Rxc5  33. dxc5 Ne2 (33... Qe6 $142 34. Qb2 Na4) 34. Qd5 Qe6 35. Qxe6 Bxe6 36. Nxe4 {  [%mdl 4096] Endgame Ng5+ is the strong threat. KBN-KBN} Bd5 (36... Bd7 $142 37.  Nd6 f6) 37. Nd6 Nc3 38. f3 f6 39. e4 Bc6 (39... Ba8 {was worth a try.} 40. Be1  Ne2) 40. Nf5 Nb5 41. Ne7 Be8 (41... Ba8 {was called for.} 42. c6 Na7) 42. c6  Na7 43. c7 {aiming for Bf2.} Bd7 44. Bf2 Nc8 45. Nd5 Kg8 46. g4 hxg4 47. hxg4  Kf7 48. Bc5 Bc6 $2 (48... Ke8 49. Kg3 Ba4) 49. f4 Bb5 50. f5 Bd3 51. Nb6 (51.  Ne7 $142 Nxe7 52. Bxe7 Ba6 53. Bc5 Ke8 54. Kg3 Bb7 55. Kf4 Kf7 56. g5) 51...  Nxb6 52. Bxb6 {KB-KB. White mates.} Ba6 53. Bd4 g6 54. Kg3 gxf5 55. exf5 Ke7  56. Kf4 Kd7 57. Bxf6 Kxc7 58. g5 Kd7 59. g6 Ke8 60. Kg5 Kf8 61. Bc3 Bc4 62. f6  Kg8 63. Bb4 Bb3 64. Kf4 {Black got outplayed after the opening. Weighted  Error Value: White=0.08/Black=0.54} 1-0  [Event "Skilling Open CCT 2021"] [Site "Online"] [Date "2020.11.19"] [Round "5.8"] [White "Radjabov, Teimour"] [Black "Anton Guijarro, David"] [Result "0-1"] [ECO "D39"] [WhiteElo "2758"] [BlackElo "2667"] [Annotator "TA"] [PlyCount "114"] [EventDate "2020.11.20"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"]  {[%evp 12,114,2,0,0,0,0,7,0,-58,-49,-85,-65,-66,-32,-44,0,-23,0,0,0,15,8,0,0,0,  0,0,0,0,0,0,0,-35,-20,-22,-33,-74,-65,-77,-74,-89,-53,-54,-66,-89,0,0,14,0,0,  -134,260,217,460,449,421,0,387,0,0,0,0,-12,-17,-16,18,-288,-259,-396,-406,-429,  -444,-393,-357,-397,-382,-358,-299,-571,-551,-1221,-395,-381,-369,-440,-438,  -666,-752,-692,-672,-714,-680,-592,-430,-409,-391,-401,-101,-189,-185,-185,  -188,-1513,-1316]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 dxc4 6. Qa4+  Nc6 7. e3 Bd7 {D39: Queen's Gambit Declined: Ragozin Defence with 5 Bg5 dxc4.}  8. Qc2 b5 9. Be2 a6 {[#] The position is equal.} 10. a3 $146 (10. O-O $11) ({  Predecessor:} 10. O-O Be7 11. e4 O-O 12. Rad1 Re8 13. h3 h6 14. Bf4 Nb4 15. Qc1  Bf8 16. Ne5 {0-1 (49) Bartholomew,J (2446)-Sarana,A (2657) Chess.com INT 2020})  10... Be7 $15 11. e4 O-O 12. Rd1 Re8 13. h4 Ng4 14. Bf4 e5 15. Nxe5 Ngxe5 16.  dxe5 Bf8 17. Qd2 Be6 18. Qe3 Qe7 19. O-O Qc5 ({Avoid the trap} 19... Qxh4 $2  20. Bg5 $18) 20. Qg3 $1 Rad8 21. h5 Nd4 22. Bg4 Bxg4 23. Qxg4 c6 24. Bg5 Be7 $1  25. Be3 {And now Rxd4 would win.} Qxe5 26. f4 Qe6 27. f5 Qe5 28. Bf4 Qc5 (28...  Qf6 $1 $17) 29. Kh1 $36 {[%mdl 2048] Black is under pressure.} Bf6 30. e5 Bxe5  31. Ne4 (31. h6 $1 $11 Bf6 32. Bg3) 31... Qd5 $2 {[%mdl 8192]} (31... Qf8 $1  $17 {stays on course.} 32. h6 Kh8 33. Bxe5 Rxe5) 32. Bg5 $18 (32. Bxe5 $2 Qxe5  33. Rde1 Nc2 $17) 32... Rd6 $2 (32... Kh8) 33. Nc3 (33. Be3 c5 $11) 33... Qc5 {  ...Nb3 is the strong threat.} 34. Ne4 Qd5 35. Be3 $2 ({White has to play} 35.  Rfe1 $18 Kf8 36. h6) 35... c5 $11 36. f6 {[%csl Gf6][%cal Rg4g7]} g6 {Strongly  threatening ...Rc6.} 37. hxg6 hxg6 {White must now prevent ...Rde6.} 38. Nxd6  Qxd6 {[#]} 39. Bh6 $2 {[%mdl 8192]} (39. Qxg6+ $1 $11 {[%mdl 512] and White is  okay.} fxg6 40. f7+ {[%mdl 64] Double Attack} Kf8 41. Bh6+ Ke7 42. f8=Q+ Kd7  43. Rf7+ Re7 44. Bg5 Rxf7 45. Qxf7+ Kc6 46. Qa7) 39... Bxf6 $19 40. Qf3 (40.  Rde1 $142 Rxe1 41. Rxe1) 40... Re6 ({Not} 40... Nxf3 41. Rxd6 Be5 42. Rd5 $15)  41. Qa8+ ({But not} 41. Qb7 Re5 $19) 41... Kh7 42. Bf4 Qd7 43. Rfe1 Rxe1+ 44.  Rxe1 Qg4 45. Bh2 $2 (45. Qe4 {only move.}) 45... Nf5 46. Qf8 {[#]} Nh6 $2 (  46... Qh4 $1 47. Qxf7+ Kh6 $1 {[%mdl 512]} 48. Qf8+ Bg7) 47. Qxc5 Bxb2 48. Qd6  Bg7 49. Qxa6 (49. Qg3 $142 a5 50. Rc1) 49... Qh4 50. g3 {[#]} Qh5 $1 {( -> ...  Qf3+)} 51. Qc6 Ng4 {[%csl Gg4][%cal Rh5h2]} 52. Re2 Qf5 53. Bg1 Qd3 54. Qg2 f5  $2 (54... Qxa3 $19 {Threatens to win with ...Qb3.} 55. Re4 f5) 55. Re7 $17 {[#] } Nf6 $1 56. Qb7 Nh5 57. Bf2 $2 (57. Rd7 Qxg3 58. Bd4 Qe1+ 59. Kh2) 57... Qf1+  {[%mdl 64] Double Attack. Weighted Error Value: White=0.77/Black=0.47} 0-1