[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.18"]
[Round "1.1"]
[White "Dev, Shah"]
[Black "Bai, Adelard"]
[Result "1/2-1/2"]
[ECO "D16"]
[WhiteElo "2320"]
[BlackElo "2430"]
[Annotator "ChessBase"]
[PlyCount "43"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 e6 6. e3 c5 7. Bxc4 cxd4 8. exd4 Nc6 9. O-O Be7 10. Qe2 O-O 11. Rd1 Nb4 12. Bg5 {[%emt 0:01:45]} h6 {[%emt 0:05:33]} 13. Bxf6 Bxf6 {[%emt 0:00:10]} 14. Ne4 {[%emt 0:00:14]} b6 {[%emt 0:00:51]} 15. Ne5 {[%emt 0:00:07]} Bh4 {[%emt 0:00:09]} 16. Ra3 {[%emt 0:00:07]} Bb7 {[%emt 0:05:58]} 17. Rh3 {[%emt 0:03:45]} Rc8 {[%emt 0:08:25]} 18. Qg4 {[%emt 0:12:27]} Bg5 {[%emt 0:07:42]} 19. Bxe6 {[%emt 0:19:30]} fxe6 {[%emt 0:00:30]} 20. Qxe6+ {[%emt 0:00:30]} Kh7 {[%emt 0:00:27]} 21. Qg6+ {[%emt 0:00:00]} Kg8 {[%emt 0:00:22]} 22. Qe6+ {[%emt 0:00:10]} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.18"]
[Round "1.2"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Makarian, Rudik"]
[Result "1/2-1/2"]
[ECO "E76"]
[WhiteElo "2491"]
[BlackElo "2403"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,74,45,37,52,43,80,79,85,78,83,57,65,29,27,34,125,109,178,181,171,71,77,77,77,77,77,72,72,86,73,64,79,54,61,77,68,77,57,65,89,0,0,27,27,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. dxe6 Bxe6 9. Bd3 Bg4 10. O-O Nc6 11. h3 Bxf3 12. Qxf3 Nd4 {E76: King's Indian: Four Pawns Attack: Lines specific to 6 Nf3 move-order} (12... Nd7 13. Bd2 Nd4 14. Qf2 Re8 15. Kh1 a6 16. e5 Nb6 17. Ne4 dxe5 18. fxe5 Nf5 19. Nxc5 Rxe5 20. Bf4 Re7 21. Bxf5 Bd4 22. Nxb7 Rxb7 23. Qf3 Re7 24. Be4 Rc8 25. Rad1 Nxc4 26. Bg5 Rcc7 27. Qd3 {1-0 (27) Popilski,G (2552)-Perelshteyn,E (2515) Dallas 2015}) 13. Qf2 Ne8 14. Be3 $146 ({Predecessor:} 14. f5 Be5 15. Bh6 Nf6 16. Bxf8 Qxf8 17. Qh4 Qg7 18. Nd5 g5 19. Nxf6+ Qxf6 20. Qg4 {0-1 (31) Chueca Forcen,A (2156)-Gimeno Oteo,M (2110) Aragon 2007}) 14... Nc7 {White is better.} 15. Rad1 a6 16. a4 Re8 17. e5 dxe5 18. f5 e4 ({Better is} 18... gxf5 $14 19. Bxf5 Rf8) 19. Bxe4 $16 (19. fxg6 f5 $11) 19... Qf6 (19... gxf5 $16 {is a better defense.} 20. Bxf5 (20. Bxb7 Rb8 $11) 20... Qe7) 20. Bf4 $18 ({Much less strong is} 20. Bxb7 $6 Rab8 $14) 20... Qb6 21. Kh1 (21. Bh2 $18 {is more deadly.}) 21... gxf5 $16 {[#]} 22. Bxf5 $1 {[%mdl 512]} Nxf5 23. Bxc7 $1 {[%mdl 64] Discovered Attack} Qxc7 24. Qxf5 Re5 25. Qg4 {Hoping for Rd7.} Qc6 26. Rd7 Qe6 27. Rfxf7 Qxf7 28. Rxf7 Kxf7 29. Ne4 {[#] Strongly threatening Ng5+.} Kg8 30. a5 Rf8 31. Kh2 (31. g3 $16) 31... Kh8 $11 32. h4 Re7 33. b3 Rf4 $1 {[%cal Rf4g4] The position is equal.} 34. Qc8+ Rf8 35. Qg4 Rf4 $1 {[%cal Rf4g4]} 36. Qc8+ Rf8 37. Qg4 Rf4 $1 {Accuracy: White = 53%, Black = 65%.} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.18"]
[Round "1.4"]
[White "Siddharth, Jagadeesh"]
[Black "Baenziger, Fabian"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2301"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,54,18,0,0,-3,0,0,0,-45,-8,-4,0,-28,-20,-26,0,0,0,-6,0,-55,-57,-106,0,0,0,-45,-50,-47,0,0,0]} 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. O-O a6 7. a4 Nc6 8. Qe2 cxd4 9. Rd1 Be7 10. exd4 O-O 11. Nc3 {[%cal Bb1c3,Bc3e2,Be2f4][%mdl 32]} Nb4 12. Bg5 Bd7 13. Ne5 Rc8 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4} 14. Bb3 Be8 15. Qf3 {[#]} Nc6 $146 ({Predecessor:} 15... Bc6 16. Nxc6 Nxc6 17. d5 Nxd5 {½-½ (17) Naumkin,I (2436)-Seferjan,N (2511) Moscow 2002}) 16. Ne2 Nd5 17. Bd2 Ndb4 18. Qg4 Na5 19. Bxb4 Bxb4 20. Ba2 Bd6 (20... Bxa4 21. Rd3) 21. Nf4 {aiming for b4!} Rc7 22. Rd3 ({White should try} 22. b4 $11 Nc6 23. b5) 22... Nc6 $15 23. Re1 {[#]} Bxe5 ({Better is} 23... Nb4 $1 $17 24. Rg3 g6) 24. dxe5 $11 Nxe5 25. Qxg7+ Kxg7 26. Rxd8 Bxa4 27. Nh5+ Kg8 $1 {Accuracy: White = 41%, Black = 74%.} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.19"]
[Round "2.1"]
[White "Bai, Adelard"]
[Black "Kovalev, Andrei"]
[Result "1/2-1/2"]
[ECO "E68"]
[WhiteElo "2430"]
[BlackElo "2489"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,99,20,36,1,23,0,19,7,22,13,24,0,0,0,18,16,20,0,0,0,60,57,53,51,63,61,58,20,25,4,44,44,43,44,44,44,44,44,45,44,44,44,44,44,44,44,45,42,51,51,52,56,55,51,51,44,44,44,45,38,52,52,58,58,58,85,85,57,67,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. Nc3 Nbd7 7. O-O e5 8. e4 exd4 9. Nxd4 Nc5 10. Re1 Re8 11. h3 h6 12. Rb1 Bd7 13. b4 {E68: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4} Ne6 {[#] And now ...Nxd4 would win.} 14. Nxe6 (14. Nf3 {with more complications.} a5 15. b5 Nc5 16. Nd4 Qc8 17. Kh2) 14... Bxe6 15. Nd5 c6 (15... a5 16. a3 axb4 17. axb4 Nxd5 18. cxd5 Bd7 19. Bb2 Bxb2 20. Rxb2 Qf6 {½-½ (30) Howell,D (2693)-Ganguly,S (2633) Astana 2019}) 16. Ne3 a5 17. a3 $146 ({Predecessor:} 17. b5 Nd7 18. bxc6 bxc6 19. Ba3 Ne5 20. Qc2 c5 {1-0 (50) Shuraev,A (2360)-Jovanovic,S (2235) Belgrade 1991}) 17... axb4 18. axb4 Ra2 19. Qb3 Qa8 20. Rd1 b5 21. Rxd6 bxc4 (21... Qa7 $11) 22. Nxc4 $14 Bf8 23. Rd2 Ra1 24. Rxa1 Qxa1 25. Qb2 Qxb2 26. Bxb2 Bxc4 (26... Nxe4 {is more complex.} 27. Bxe4 Bxc4 28. Bxc6 Rb8 29. Be5 Bxb4 30. Rc2 Bd3) 27. Bxf6 Bxb4 28. Rd4 Bc3 29. Rxc4 {[%mdl 64] [#] Double Attack} Bxf6 30. Rxc6 {[%mdl 4096] Endgame KRB-KRB} Bd4 31. Rd6 Bc5 32. Rd5 Bb6 33. Bf3 Rc8 34. Rd2 Rd8 35. Rc2 Rd3 36. Kg2 $1 Bd4 37. Be2 Rb3 38. Rc8+ Kg7 39. Rd8 Bb6 40. Rd2 Rb4 41. e5 Re4 42. f4 g5 43. Bf3 Rd4 44. Rb2 Ba5 45. Rb5 Be1 46. f5 (46. Bh5 $14 Rb4 47. Rxb4 Bxb4 48. Kf3) 46... Rd2+ $11 {The position is equal.} 47. Kg1 Bf2+ 48. Kh2 Be1+ 49. Bg2 {e6 is the strong threat.} Re2 50. e6 {Accuracy: White = 71%, Black = 67%.} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.19"]
[Round "2.3"]
[White "Bracker, Arne"]
[Black "Siddharth, Jagadeesh"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2243"]
[BlackElo "2301"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,112,0,0,0,27,55,47,34,47,51,77,48,139,128,133,94,93,111,90,94,98,87,71,102,100,17,255,267,255,261,256,253,251,262,260,253,276,272,264,252,226,202,179,133,193,193,285,279,281,290,423,416,447,446,438,442,448,443,840,835,5097,5085,1874,1747,29970,29970,29966,29969,29970,29973,12302,6205,29977,29978,29978,29979,29980,29981,29982,29983,29983,29984,29984,29983,29984,29985,29985,29986,29986,29987,29988,29989,29996,29997,29997,29998,29999]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Re1 O-O 7. d4 d5 8. e5 Ne4 9. Bxc6 bxc6 10. Be3 {B31: Sicilian: 2...Nc6 3 Bb5 g6} f6 $146 ({Predecessor:} 10... cxd4 11. cxd4 Qb6 12. Qc1 a5 13. Nc3 Nxc3 14. Qxc3 Bf5 15. Nd2 Rfb8 16. b3 a4 17. h3 Qa5 18. Qxa5 Rxa5 19. bxa4 Rxa4 {1-0 (59) Giri,A (2776)-Le,Q (2713) Bucharest 2019}) 11. exf6 Bxf6 12. Bh6 {White is slightly better.} Rf7 13. Nbd2 cxd4 14. cxd4 (14. Nxe4 {is interesting.} dxe4 15. Nxd4 Qb6 16. Rxe4 c5 17. Nf3) 14... c5 (14... Bg4 $14) 15. Nxe4 $16 dxe4 16. Ne5 ({Worse is} 16. Rxe4 Bb7 $11) 16... cxd4 17. Nxf7 Kxf7 18. Rxe4 {And now Qb3+ would win.} Qd5 19. Qf3 {White wants to mate with Rxe7+!} Bb7 20. Rae1 {Intending Rxe7+ and mate.} Re8 21. g4 ({White should try} 21. Qg3 $16) 21... g5 $2 (21... d3 $11) 22. h4 $1 $18 {[%cal Rh4g5] Strongly threatening hxg5.} Kg8 23. hxg5 Bxg5 24. Bxg5 Qxg5 25. Qf4 Qh4 {[#]} 26. g5 $1 Qh5 27. Qg4 Qxg4+ 28. Rxg4 {[%mdl 4096] Endgame KRR-KRB} Rd8 29. Rd1 ({Inferior is} 29. Rxe7 d3 $11) 29... e5 {Threatens to win with ...Bf3.} 30. Rd2 Rc8 {[#]} (30... Bf3 $16 31. Rh4 e4) 31. Kh2 $1 Rc1 (31... Bf3 $142 32. Rg1 Rd8) 32. Rg1 Rc5 33. Kg3 Ra5 (33... Be4 $142 34. f4 Bg6 35. fxe5 d3) 34. f4 exf4+ 35. Kxf4 Rxa2 36. Rc1 Ra4 37. Rc7 d3+ (37... Bd5 $142 38. Ke5 Bf7 39. Rxd4 Ra5+ 40. Ke4 Bg6+ 41. Ke3 Re5+ 42. Kd2 a6) 38. Ke3 Be4 39. b3 Rb4 40. Ra2 {Played: Rc7-c4} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.19"]
[Round "2.4"]
[White "Makarian, Rudik"]
[Black "Swicarz, Maciej"]
[Result "1-0"]
[ECO "D72"]
[WhiteElo "2403"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,131,18,16,39,28,66,46,96,107,119,97,91,67,111,108,94,91,137,131,146,153,190,186,225,162,171,168,171,168,167,164,248,266,264,253,248,241,349,361,508,501,480,458,519,272,360,360,360,360,356,343,360,360,360,354,354,353,352,352,346,247,242,232,284,253,253,253,333,334,338,277,341,341,345,320,331,0,283,0,312,295,297,281,305,291,318,260,424,435,435,434,429,422,423,417,424,391,433,420,603,594,603,578,1139,758,1082,1100,1107,1052,745,724,1422,1430]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. e4 Nb6 7. Ne2 c5 8. d5 e6 9. O-O O-O 10. Nbc3 exd5 11. exd5 Nc4 {D72: Fianchetto Grünfeld: 5 cxd5 Nxd5 6 e4 Nb6 (without Nf3)} (11... Bf5 12. Be3 Na6 13. b3 Re8 14. h3 Nb4 15. Rc1 c4 16. Bd4 Bh6 17. bxc4 Bxc1 18. Nxc1 Rc8 19. a3 {1-0 (28) Firouzja,A (2685)-Asadli,V (2502) Konya 2019}) 12. Ne4 Na6 13. Qc2 $146 ({Predecessor:} 13. N2c3 h6 14. Qe2 Ne5 15. f4 Ng4 16. h3 Nf6 17. Nxf6+ Qxf6 18. g4 Bd7 19. Ne4 {1-0 (40) Stamenkovic,Z (2430)-Jevtic,M (2375) Ulcinj 1998}) 13... Nb6 {White is slightly better.} 14. Bg5 f6 15. Bf4 Bg4 16. h3 Nb4 17. Qxc5 Bxe2 18. Qxb4 Bxf1 (18... Nxd5 $2 19. Qb3 $18) 19. Rxf1 Kh8 ({Avoid the trap} 19... Nxd5 $2 20. Qb3 $18) 20. Rd1 Re8 21. d6 Nd7 22. Nc5 Nxc5 23. Qxc5 {Hoping for d7.} Qd7 {[#]} 24. Qc7 $1 {[%cal Rc7d7]} Red8 {aiming for ...Qxc7.} 25. Qxb7 Qxb7 (25... Rac8 $142 26. Qxd7 Rxd7) 26. Bxb7 $18 Rab8 27. Bf3 {Black must now prevent d7.} g5 28. Be3 Rxb2 (28... Rbc8 $142 29. Bg4 Rc6) 29. d7 ({Don't play} 29. Bxa7 f5 $18) 29... Rb5 (29... a5 {keeps fighting.} 30. Bc5 f5) 30. Bc6 Ra5 31. Bd2 Re5 32. Bc3 Rc5 33. Re1 {[#] Re8+ would kill now.} Re5 34. Bxe5 fxe5 {[%mdl 4096] Endgame KRB-KRB} 35. f4 gxf4 36. gxf4 Kg8 37. fxe5 Kf7 38. e6+ Ke7 39. Bd5 Rf8 40. Re2 Bd4+ 41. Kg2 Bc5 42. Rc2 Bb6 43. Bb3 Bd8 44. Rc5 Rf6 45. Kg3 Rg6+ 46. Kf4 Kd6 47. Rc8 Ke7 48. Rc5 Kd6 $1 {[%cal Rd6c5]} 49. Rc8 Ke7 50. Rc2 Kd6 51. Rc3 Ke7 52. Ke4 Rh6 53. Kd4 Ba5 $2 (53... Kd6 54. Rf3 Rh4+ 55. Kd3 Kc7) 54. Rg3 {Threatens to win with Rg7+.} Rg6 55. Rd3 Bb6+ 56. Kc3 Ba5+ 57. Kb2 Bd8 58. Bc4 Rf6 59. Kb3 Rh6 (59... Bc7 $142 60. Rd2 Rf3+ 61. Kb4 Rxh3) 60. Ka4 {White is clearly winning.} Rh4 61. Kb5 Bc7 62. Bd5 {And now Kc6 would win.} Rh6 63. Kc6 Bb6 64. Kb7 Rf6 65. Bb3 Bd8 66. Kxa7 {Accuracy: White = 80%, Black = 42%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.19"]
[Round "2.5"]
[White "Dev, Shah"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "0-1"]
[ECO "E52"]
[WhiteElo "2320"]
[BlackElo "2491"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,112,8,-8,-19,-20,-21,-7,-10,-19,-23,-15,-30,-14,-37,-29,-39,-41,-31,-30,-64,-85,-77,-80,-90,-72,-79,-75,-69,-69,-69,-74,-129,-125,-117,-104,-172,-180,-135,-208,-202,-202,-209,-200,-214,-216,-215,-216,-216,-202,-216,-216,-204,-207,-211,-206,-202,-208,-161,-123,-662,-640,-471,-482,-348,-267,-552,-657,-693,-681,-1179,-1164,-3954,-3398,-3838,-2348,-4941,-4941,-3908,-4610,-4542,-4005,-29986,-29987,-29987,-29988,-29988,-29989,-29989,-29990,-29990,-29991,-29991,-29992,-29994,-29995]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d5 8. cxd5 exd5 9. Ne5 Bd6 10. f4 c5 11. Bd2 {E52: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5 6 Bd3 b6} Nc6 12. Ne2 cxd4 $146 ({Predecessor:} 12... Ne4 13. Rf3 Ne7 14. Ng3 f6 15. Ng4 Qd7 16. h3 Kh8 {0-1 (45) Plat,V (2551)-Navara,D (2727) Poland 2018}) 13. Nxc6 {The position is equal.} Bxc6 14. Nxd4 Bd7 15. h3 Re8 16. b4 Qe7 17. Qb3 Ne4 18. Be1 a5 {[%cal Ra5b4]} 19. Qxd5 {Black must now prevent Bxe4.} Nf6 $36 {[%mdl 2048] White is under strong pressure.} 20. Qf3 axb4 21. Bf2 Bc5 22. Rfe1 Ne4 23. Bxe4 Qxe4 24. Qxe4 Rxe4 25. Nf3 (25. Nb3 $142) 25... h5 26. Nd2 Ree8 27. e4 (27. Nb3 $17) 27... Be6 $19 28. Nb3 Bxb3 29. axb3 Rxa1 30. Rxa1 Rxe4 31. Bxc5 bxc5 $17 {[%mdl 4096] Endgame KR-KR} 32. Rc1 Rxf4 33. Rxc5 h4 34. Rb5 f6 35. Rb7 Kh7 36. Rb5 g5 $1 37. Rb7+ Kg6 38. Rb5 Kf7 39. Rb7+ $2 {[%mdl 8192]} (39. Rb6 $17) 39... Ke6 $19 40. Rb6+ Kd5 41. Rb5+ Kc6 42. Rb8 $2 (42. Ra5) 42... Kc5 43. Rd8 f5 44. Rd7 g4 45. hxg4 fxg4 46. Kh2 Rd4 {Played: Rf4-f2} 0-1

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.20"]
[Round "3.1"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Bai, Adelard"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2491"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,79,8,11,13,8,15,14,13,63,37,76,79,80,86,284,285,275,280,283,287,308,329,380,306,300,294,289,275,310,316,402,224,218,208,243,250,284,270,275,272,265,246,285,282,387,364,382,475,408,344,380,383,376,376,536,532,518,509,497,514,532,532,609,613,742,756,713,708,29962,29961,29955,29950]} 1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. h3 Bh5 5. b3 (5. O-O Nd7 6. c4 e6 7. Qb3 Qb6 8. Qc2 dxc4 9. g4 Bg6 10. Qxc4 Bd6 11. Nc3 Ne7 12. d4 {½-½ (53) Bu,X (2718)-Yu,Y (2759) Ningbo 2018}) 5... Nd7 6. Bb2 {A07: Réti Opening: New York and Capablanca Systems} Ngf6 7. O-O Qc7 8. c4 {The position is equal.} e5 9. cxd5 cxd5 $146 ({Predecessor:} 9... Nxd5 10. d3 Be7 11. Nc3 Nxc3 12. Bxc3 Bf6 13. Rc1 O-O 14. Rc2 Rfe8 15. Qa1 Bg6 16. Nd2 Nc5 17. Bb2 Ne6 18. Ne4 Bxe4 19. Bxe4 Nd4 20. Bxd4 {½-½ (20) Pak,R (2131)-Bruemmer,F (2171) Germany 2011}) 10. d3 a6 11. Qc1 Qb8 $2 {[#]} (11... Qxc1 $16 {was called for.} 12. Rxc1 Bd6) 12. Nxe5 $1 $18 {[%mdl 512]} Nxe5 13. Qe3 $1 Nfd7 {intending ...Be7.} 14. d4 {[%mdl 64] Pin} Be7 {Black wants to play ...Nc6.} 15. dxe5 O-O 16. Bxd5 Bc5 17. Qg5 Bg6 18. Nd2 Re8 19. Nc4 Ra7 20. e6 (20. Rad1 $142 Nf8 21. Nd6 $1 {[%mdl 512]}) 20... fxe6 21. Be4 Be7 22. Qg4 $40 {[%mdl 128] White has strong attack.} Nf6 {[#]} 23. Bxf6 $1 (23. Qxe6+ Bf7 $16) 23... Bxf6 24. Bxg6 hxg6 25. Rad1 ({Not} 25. Qxg6 Bxa1 26. Rxa1 Ra8 $14) 25... Kh7 26. Nd6 Re7 27. h4 b5 28. h5 g5 29. Qe4+ Kh8 30. Qg6 Qg8 31. Ne4 Qe8 (31... Rf7 $142 32. Rd6 Rf8) 32. Nxf6 gxf6 33. Qxf6+ Kh7 34. Qxg5 Rg7 35. Qe5 Raf7 36. Rd6 {[%cal Bd1d6,Bd6e6,Be6f6][%mdl 32]} Re7 37. Rc1 Qf7 38. Rcc6 Re8 39. Rxe6 Rf8 40. Rf6 {Accuracy: White = 94%, Black = 34%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.20"]
[Round "3.2"]
[White "Swicarz, Maciej"]
[Black "Dev, Shah"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2357"]
[BlackElo "2320"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,51,36,28,16,12,0,31,0,13,0,41,16,36,11,33,13,83,67,112,44,83,76,83,66,141,150,142,135,148,148,191,212,190,160,382,123,106,111,639,624]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d5 7. exd5 Nxd5 8. Re1 {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack.} Bg4 9. h3 Bh5 (9... Bxf3 $5 10. Qxf3 Nb6 $11) 10. c3 {White is slightly better.} Kh8 11. a5 Rb8 12. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} f6 {[#]} 13. Nf1 $146 ({Predecessor:} 13. Ne4 Bf7 14. Qa4 a6 15. Qa2 b5 16. axb6 cxb6 17. Qb1 a5 18. Ng3 b5 19. Bb3 {1-0 (53) Lagarde,M (2576)-Hebden,M (2523) Hastings 2014}) 13... Bf7 14. Ng3 g6 (14... a6 $11 {keeps the balance.}) 15. Bh6 Rg8 16. Bd2 (16. d4 $16 {[%cal Rd4e5]} e4 17. Bxd5 (17. Rxe4 Nxc3 18. bxc3 Bxc4 $11) (17. Nxe4 g5 $14) 17... Qxd5 18. Rxe4 (18. Nxe4 g5 $11)) 16... Qf8 17. Qb3 Qd8 18. a6 b6 {[#]} ({Black should play} 18... bxa6 $14 19. Qa2 a5) 19. Qa4 $1 $16 Na5 20. Ba2 $36 {[%mdl 2048] Keeping Black busy.} c5 {[#]} 21. b4 $1 {[%cal Rb4a5]} cxb4 22. cxb4 Be8 23. b5 Bc5 $2 (23... Nc7 $16) 24. Bxa5 $2 (24. d4 $18 {is more deadly.} exd4 25. Ne4) 24... bxa5 25. Qc4 Bxb5 $2 {[%mdl 8192]} (25... Rxb5 $16 26. d4 Bb4) 26. Qxc5 {Accuracy: White = 68%, Black = 33%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.20"]
[Round "3.3"]
[White "Siddharth, Jagadeesh"]
[Black "Makarian, Rudik"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "2301"]
[BlackElo "2403"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,81,30,17,22,26,31,21,17,-4,10,-5,38,33,39,43,43,38,46,47,49,40,37,42,47,50,50,42,84,76,82,74,77,68,97,89,87,37,50,28,26,20,48,-28,-32,-41,0,0,0,0,0,0,0,-14,-11,-20,0,0,0,-4,5,4,12,0,37,0,0,0,50,45,52,50,57,57]} 1. d4 g6 2. e4 d6 3. Bc4 Nf6 4. Qe2 Bg7 5. Nf3 O-O 6. e5 dxe5 {B06: Modern Defence} 7. dxe5 Nd5 8. h3 Nb6 {The position is equal.} 9. Bd3 $146 ({Predecessor:} 9. Bb3 c5 10. O-O Nc6 11. e6 Bxe6 12. Bxe6 fxe6 13. Qxe6+ Kh8 14. c3 Qd5 15. Qxd5 Nxd5 16. Nbd2 Nf4 17. Ne4 Nd3 18. Rb1 {½-½ (96) Short,N (2678)-Adhiban,B (2655) Riadh 2017}) 9... Nc6 10. O-O Nd4 11. Nxd4 Qxd4 12. Re1 $1 Nd7 {[%cal Rd7e5]} 13. e6 Ne5 14. exf7+ Rxf7 15. Be4 Bf5 {[#] Hoping for ...Bxe4.} 16. Nc3 Bxe4 17. Nxe4 Raf8 18. c3 Qd5 19. Bg5 Nc4 20. Rad1 Qc6 21. Bh4 {aiming for Ng5.} h6 22. Bg3 Nd6 23. Nxd6 exd6 24. Qg4 Kh7 25. Re6 Bf6 26. Bh4 (26. Qe2 $14) 26... h5 $11 27. Qg3 Qc4 (27... Qa4 $5 {[%cal Ra4d1]} 28. Rd4 Qxa2 29. Rxf6 Rxf6 30. Bxf6 Rxf6 $15) 28. Rxf6 Rxf6 29. Bxf6 Rxf6 {[%mdl 4096] Endgame KQR-KQR} 30. Qg5 Kg7 31. Qa5 a6 32. Qd5 Qxd5 33. Rxd5 {KR-KR} Kf7 34. f3 Rf5 35. Rxf5+ gxf5 {KP-KP} 36. g3 c5 37. Kf2 f4 $1 38. g4 c4 39. h4 {White is slightly better.} (39. gxh5 $2 b5 $19) 39... a5 40. a4 ({And not} 40. gxh5 b5 $19) 40... Kg6 41. g5 {Accuracy: White = 59%, Black = 58%.} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.20"]
[Round "3.4"]
[White "Plat, Vojtech"]
[Black "Bracker, Arne"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2589"]
[BlackElo "2243"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,85,0,0,0,0,0,0,0,0,0,0,0,-27,-18,-29,-20,-27,0,-16,0,0,0,-7,0,0,0,-12,0,0,0,-39,-15,-17,0,-56,0,-31,-32,-61,-25,-40,0,0,0,0,0,0,0,0,0,0,0,0,0,0,193,179,333,319,304,302,531,524]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. g3 ({Predecessor:} 9. b3 g6 {½-½ (71) Tomczak,J (2509)-Nabaty,T (2523) Chotowa 2010}) 9... g6 10. b3 Bg7 11. Bb2 O-O 12. Bg2 Rae8 13. O-O $1 Bxe5 {C45: Scotch Game} 14. Qxe5 Qxe5 15. Bxe5 Rxe5 {The position is equal.} 16. cxd5 Bxf1 17. Kxf1 cxd5 {[#]} 18. Nc3 $146 (18. Na3 c6 19. Rd1 Rb8 20. Nc2 Rb6 21. Bf3 {½-½ (43) Chigaev,M (2623)-Sjugirov,S (2657) Budva 2019}) 18... c6 19. Na4 Rfe8 20. Bf3 Kf8 21. Nc5 Ke7 22. Nd3 Re6 23. Rc1 a5 24. Nc5 Re5 25. h4 f5 26. Nd3 Re6 27. h5 g5 28. Nc5 Re5 29. Be2 ({White should play} 29. Nd3 $11 Re6 30. Nc5) 29... Rb8 (29... Kd6 $15 30. Bd3 g4) 30. Ke1 Kd6 {Strongly threatening ...Rbe8.} 31. Kd2 h6 (31... Rbe8 $5 {[%cal Re5e2]} 32. Bf1 f4 $15) 32. Bf1 f4 33. Nd3 $1 {[%cal Rd3e5]} Re4 {Hoping for ...fxg3.} 34. gxf4 gxf4 35. Bg2 Rd4 36. Bf3 {[#]} c5 $1 {[%mdl 512] ...c4 is the strong threat.} 37. Kc3 {aiming for Rg1.} (37. Rxc5 Rxd3+) 37... a4 38. Rd1 axb3 39. axb3 Ra8 $2 (39... Rb5 $11 {and Black has nothing to worry.}) 40. Rg1 $18 {[%mdl 1024] Threatens to win with Rg6+. White has strong compensation.} Kc6 $2 (40... Rxd3+ {was called for.} 41. Kxd3 Ra2) 41. Rg6+ {[%mdl 64] [#] Double Attack} d6 {and the idea ...Ra3 leaves Black hopeful.} 42. Rxh6 Ra2 $2 (42... Ra3) 43. Rf6 {Accuracy: White = 63%, Black = 28%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.20"]
[Round "3.5"]
[White "Kovalev, Andrei"]
[Black "Baenziger, Fabian"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2489"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,69,14,10,8,25,10,10,-3,0,-4,22,-3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,92,0,0,0,135,141,133,144,137,137,132,142,1199,1161,1156,1095,29967,14,0,0,29968,29969,29947,29947,6270,6187,6187,6175,6187,6170]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c3 Ngf6 5. Qe2 a6 6. Ba4 b5 7. Bc2 Bb7 8. O-O e6 9. d4 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} Be7 10. Bf4 O-O 11. Nbd2 {The position is equal.} Qc7 $146 ({Predecessor:} 11... Rc8 12. Rac1 Re8 {½-½ (46) Navara,D (2734)-Vachier Lagrave,M (2775) Riga 2019}) 12. Rac1 Rfe8 13. h3 Rac8 14. e5 Nd5 15. Bg3 cxd4 16. cxd4 {Bxh7+! is the strong threat.} Qb6 17. Ne4 {[%cal Re5d6]} dxe5 18. dxe5 Nb4 19. Bb1 Rxc1 20. Rxc1 Bd5 (20... Bxe4 $11 21. Qxe4 g6) 21. Rd1 (21. Nd6 $16 Bxd6 22. exd6) 21... Rd8 $11 22. Nd6 Nxe5 (22... g6 $11) 23. Nxe5 $16 Bxd6 {[#]} 24. Bxh7+ $1 {[%mdl 512]} Kxh7 25. Qh5+ {[%mdl 64] Double Attack} Kg8 26. Qxf7+ Kh8 $2 {[%mdl 8192] [#]} (26... Kh7 $16) 27. Ng6+ $1 $18 Kh7 28. Bxd6 {White wants to mate with Ne7.} Rxd6 29. Nf8+ $2 (29. Ne7 {mates} e5 30. Rxd5 (30. Nxd5 Nxd5 31. Rxd5 Rxd5 $16) 30... Nxd5 31. Qg8+ (31. Nxd5 Qc6 $11) 31... Kh6 32. Qh8+ Kg5 33. Qxg7+ {[%mdl 64] Double Attack} Rg6 {[#]} 34. h4+ $1 {[%mdl 512]} (34. Nxg6 Qxg6 35. Qxe5+ {[%mdl 64] Double Attack} Qf5 $11) 34... Kg4 35. Nxg6) 29... Kh8 $11 {Threatens to win with ...e5.} 30. Ng6+ $2 $40 {[%mdl 8320] White is up to no good.} (30. Qh5+ $11 Kg8 31. Ng6) 30... Kh7 {White must now prevent ...e5.} 31. Ne7 {[%cal Rf7h5]} e5 32. Rxd5 Nxd5 33. Qg8+ {White is clearly winning.} Kh6 34. Qh8+ Kg5 35. Qxg7+ {[%mdl 64] Double Attack. Accuracy: White = 59%, Black = 50%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "4.1"]
[White "Bai, Adelard"]
[Black "Baenziger, Fabian"]
[Result "1/2-1/2"]
[ECO "D71"]
[WhiteElo "2430"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,33,-4,10,-37,-10,-40,-37,-43,-58,-55,-25,-20]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 Nc6 6. Nf3 d5 7. cxd5 Nxd5 8. O-O Nb6 9. d5 Na5 10. e4 c6 11. Nd4 cxd5 12. exd5 e6 {[%cal Rb6d5]} 13. Nc2 {D76: Fianchetto Grünfeld: Main Line with 7...Nb6} (13. Nb3 Nac4 14. dxe6 Bxe6 15. Bxb7 Qxd1 16. Rxd1 Rad8 17. Rxd8 Rxd8 18. Bg5 Rb8 19. Bg2 Nxb2 20. Nb5 a6 {½-½ (31) Wiewiora,E (2370)-Molenda,M (2383) Katowice 2019}) 13... exd5 14. Nxd5 Nxd5 15. Bxd5 Bh3 16. Re1 Qd7 17. Ne3 {Predecessor:} Rad8 $146 18. Bd2 Nc6 19. Bc3 Bxc3 20. bxc3 {½-½ (45) Aydin,E (1981)-Altunbay,O (1837) Mersin 2016} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "4.2"]
[White "Bracker, Arne"]
[Black "Kovalev, Andrei"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2243"]
[BlackElo "2489"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,80,49,54,0,42,12,-12,-12,156,-65,-82,-52,-45,-46,-51,-66,-44,-60,-59,-129,-72,-100,-100,-87,-16,-4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 O-O 8. Be2 d6 9. O-O Bd7 10. f3 Nxd4 11. Bxd4 Bc6 12. Qd2 Nd7 13. Be3 a5 14. b3 Nc5 15. Rab1 e6 16. a3 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0} (16. Nb5 $14) 16... Be5 17. b4 axb4 18. axb4 Qf6 $2 {[#]} (18... Ra3 $11) (18... Ra3 19. bxc5 Rxc3 20. f4 Bg7 21. e5 dxe5 22. Qxc3 exf4 23. Qd2 Qg5 {0-1 (43) Bu,X (2730)-Savchenko,B (2566) Riadh 2017}) 19. bxc5 $2 (19. Nd1 $1 $16) 19... Bxc3 $15 20. Qd3 $146 ({Predecessor:} 20. Qc1 Ra2 21. Rf2 dxc5 22. Bxc5 Rd8 23. Be3 Bd2 24. Bxd2 Rdxd2 25. Qf1 Qd4 26. Re1 Ba4 27. g3 Bc2 28. Kg2 Bd3 29. Rd1 Bxe2 30. Qxe2 Qxf2+ {0-1 (30) Alinasab,M (2199)-Uuriintuya,U (2199) Bhubaneswar 2016}) 20... dxc5 21. Bxc5 Rfd8 22. Qe3 Bd2 23. Qf2 Ra2 24. Rfd1 {[#]} (24. Be3 $15) 24... Ba4 $1 $17 {[%cal Ra4d1]} 25. Rf1 Bf4 {And now ...Rdd2 would win.} 26. g3 Qg5 ({Black should try} 26... Rdd2 $17 27. Rfe1 Be5) 27. Kh1 $11 {The position is equal.} Bxg3 (27... Rc8 {is more complex.} 28. Bb6 Bd6 29. Ra1 Qd2 30. Bd4 Rxa1 31. Rxa1 Bb3) 28. hxg3 {Be3 is the strong threat.} Rxe2 $1 29. Qxe2 Rd2 30. Qxd2 $1 Qxd2 31. Rxb7 h5 32. Rf2 Qg5 33. Bd6 e5 34. Kh2 {Hoping for f4!} h4 35. gxh4 Qxh4+ {[%mdl 64] Double Attack} 36. Kg2 Qg5+ 37. Kh2 Qf4+ 38. Kg2 Qg5+ 39. Kh2 Qf4+ 40. Kg2 Qg5+ {Accuracy: White = 39%, Black = 58%.} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "4.3"]
[White "Makarian, Rudik"]
[Black "Plat, Vojtech"]
[Result "1/2-1/2"]
[ECO "D72"]
[WhiteElo "2403"]
[BlackElo "2589"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,86,36,46,46,47,10,9,24,48,43,38,44,36,49,76,61,71,48,115,103,166,158,137,150,155,138,133,125,139,101,104,111,100,100,98,109,125,118,118,118,89,8,134,52,52,55,45,0,0,0,0,0,0,0,0,0,0,-6,-3,-3,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. e4 Nb6 7. Ne2 Nc6 8. d5 Na5 9. O-O O-O 10. Nbc3 {D72: Fianchetto Grünfeld: 5 cxd5 Nxd5 6 e4 Nb6 (without Nf3)} (10. Qc2 c6 11. Bd2 Nac4 12. Bc3 cxd5 13. Bxg7 Kxg7 14. b3 Nd6 15. exd5 Bf5 16. Qb2+ Kg8 17. Nbc3 Rc8 {½-½ (65) Michalik,P (2560)-Plat,V (2556) Prague 2018}) 10... e6 11. h3 exd5 12. exd5 Nac4 13. b3 Nd6 14. Bf4 $146 ({Predecessor:} 14. Bd2 Re8 15. Nf4 Bd7 16. Rc1 a5 17. a4 Nbc8 {½-½ (31) Straub,N (2159)-Nguyen,H (1919) Germany 2017}) 14... Re8 15. Rc1 Bd7 16. Qd2 Nbc8 17. Rfe1 Nf5 (17... h5 $14) 18. g4 $16 Nh4 (18... Nfd6 $16 {was called for.}) 19. Bg5 $18 Nxg2 20. Bxd8 Nxe1 21. Rxe1 Rxd8 22. Ne4 Nb6 23. Qa5 f5 24. Nc5 fxg4 25. Nf4 (25. Nxb7 Rf8) 25... gxh3 26. Nce6 Bxe6 27. dxe6 Rd4 28. Qg5 Re8 {[#]} 29. e7 ({Much weaker is} 29. Nxh3 $6 Nd5 $11) ({Better is} 29. Re3 $1 $16) 29... Nd7 (29... Rd6 $11 {remains equal.}) 30. Qg4 (30. Ne6 $16 Bf6 {[%mdl 64] Double Attack} 31. Qc1 Rg4+ 32. Kh1 Rxe7 33. Qxc7) 30... Rd6 $1 $14 31. Qxh3 Ne5 32. Nd5 c6 $36 {[%mdl 2048] The position is equal. Black has the initiative.} 33. f4 Nf3+ $1 34. Qxf3 {Strongly threatening Nc7.} Rxd5 35. Qe4 {Qe6+ is the strong threat.} Bf6 36. Qb4 Rd7 {[%cal Rf6e7]} 37. f5 Kg7 38. fxg6 Bxe7 39. Qg4 Bc5+ {[%mdl 64] [#] Discovered Attack} 40. Kg2 Rd2+ {[%mdl 64] Double Attack} 41. Kh3 {Intending gxh7+ and mate.} Rd3+ 42. Kg2 Rd2+ $1 {[%mdl 64] Double Attack} 43. Kh3 {White wants to mate with gxh7+.} Rd3+ {Accuracy: White = 69%, Black = 50%.} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "4.4"]
[White "Dev, Shah"]
[Black "Siddharth, Jagadeesh"]
[Result "1/2-1/2"]
[ECO "A57"]
[WhiteElo "2320"]
[BlackElo "2301"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,90,53,52,67,79,81,81,81,70,81,69,93,68,68,70,77,83,245,244,303,320,326,240,333,337,331,317,315,281,274,279,362,365,344,337,466,467,442,375,430,433,410,316,317,317,317,318,327,319,318,324,312,316,316,310,330,251,258,258,252,207,207,196,222,225,226,214,249,206,210,210,201,8,8,8,8,8,5447,5447,5447]} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. e3 e6 6. Nc3 Bb7 7. e4 axb5 {A57: Benko/Volga Gambit} (7... g6 8. a4 Bg7 9. Bf4 O-O 10. Nf3 exd5 11. e5 Ne4 12. Nxd5 Qa5+ 13. b4 cxb4 14. Bc4 b3+ 15. Kf1 {0-1 (23) Ivanchuk,V (2726)-Christiansen,J (2495) Riadh 2017}) 8. Bxb5 Qa5 {With the idea ...Nxe4.} 9. Bd2 Qb6 {Black wants to play ...Nxe4.White is better.} 10. a4 exd5 11. exd5 Nxd5 12. Nxd5 Bxd5 13. Nf3 Qe6+ {[#]} 14. Be3 $146 {Threatens to win with 0-0.} ({Predecessor:} 14. Qe2 Bxf3 15. gxf3 Be7 16. Bc3 {0-1 (38) Drvodelic,M (2056)-Lasic,L (2209) Zagreb 2011}) 14... Bc4 $2 (14... Be7 $16) 15. Ng5 $18 Qd5 {[#]} 16. Bxc4 $1 Qxc4 17. Rc1 Qxa4 18. Qd5 ({And not} 18. Bxc5 Bxc5 19. Qe2+ Kf8 $11) 18... f6 19. Nf7 ({Worse is} 19. Bxc5 Bxc5 20. Qxc5 Nc6 $11) 19... Qc6 20. Qxc6 Nxc6 21. Nxh8 Be7 22. O-O d6 23. Rfe1 Ne5 24. Ra1 Rb8 25. Bd2 Rxb2 26. Ra8+ Kd7 27. Ra7+ Ke6 28. Bc1 Rb8 29. f4 {[%mdl 64] Pin} Rxh8 30. fxe5 fxe5 31. Ra6 Rb8 32. Ba3 Rb5 33. Rd1 e4 34. Kf2 Ke5 35. Ra7 Ke6 36. Rc1 Bf6 37. Rc2 Bd4+ 38. Ke2 Rb3 39. Bc1 d5 40. Ra3 c4 41. Rxb3 cxb3 42. Rb2 $2 ({White must play} 42. Rd2 $18 Bc3 43. Rd1) 42... Bxb2 $11 43. Bxb2 g5 44. g4 {And now Bd4 would win.} h5 $2 {[%mdl 8192]} (44... Kd6 $11) 45. gxh5 $18 Kf7 {[%mdl 32768] Accuracy: White = 67%, Black = 45%. . An unexpected result.} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "4.5"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Swicarz, Maciej"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2491"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,65,0,14,0,18,0,12,16,26,23,38,4,59,55,150,24,187,178,169,155,245,254,231,239,278,223,418,418,418,418,413,405,424,424,421,418,415,420,418,418,407,407,387,392,819,768,29997,29979]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. cxd5 Nxd5 7. Bc4 Nxc3 8. bxc3 c5 9. O-O b6 10. Qe2 Bb7 11. e4 $146 {D94: Grünfeld: 4 Nf3 Bg7 5 e3} ({Predecessor:} 11. Ba3 Qc7 12. Rac1 Nc6 13. Rfd1 Na5 14. Bb5 Rfd8 15. h3 e6 16. Nd2 a6 17. Ba4 Bf8 18. Bb2 e5 {0-1 (35) Favarel,A (2345)-Negi,P (2638) Cappelle-la-Grande 2014}) 11... Nc6 {[%cal Rc5d4]} 12. Be3 Na5 13. Bd3 {The position is equal.} Qc7 14. h4 e5 15. Nxe5 Rae8 (15... Bxe5 $11 16. dxe5 Qxe5) 16. f3 f5 (16... Bxe5 $14 17. dxe5 Qxe5) 17. Bf4 (17. exf5 $16 Bxe5 18. dxe5) 17... Qe7 $2 (17... Qd6 $11 {and Black has nothing to worry.}) 18. exf5 $18 cxd4 19. cxd4 Nc6 (19... Qxh4 $16 {keeps fighting.} 20. Qe3 (20. fxg6 hxg6 21. g3 Qd8 $18) 20... gxf5) 20. fxg6 hxg6 21. Qe3 Qxh4 22. g3 ({Inferior is} 22. Bxg6 Re6 $17) 22... Qh3 $2 (22... Qh5 {was worth a try.}) 23. Bc4+ Kh7 24. Rf2 {[#] Threatens to win with Rh2!} Nxd4 25. Qxd4 Rxe5 26. Bxe5 {White wants to mate with Rh2!} Qxg3+ 27. Bxg3 {Intending Rh2+ and mate.} Bxd4 28. Rd1 Bxf2+ 29. Bxf2 {Hoping for Rd7+.} ({Weaker is} 29. Kxf2 Rxf3+ 30. Ke2 Rxg3 $18) 29... Bxf3 30. Rd7+ {[%mdl 64] [#] Double Attack} Kh6 31. Rxa7 Rb8 $2 (31... Kg5 32. Bxb6 Rc8 33. Be3+ Kf6) 32. Be3+ Kh5 33. Kf2 {Accuracy: White = 71%, Black = 17%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "5.1"]
[White "Swicarz, Maciej"]
[Black "Bai, Adelard"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2357"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,85,33,31,49,25,25,16,42,40,33,35,44,39,30,32,58,51,72,83,81,79,85,37,41,34,39,31,21,21,42,41,42,59,54,29,32,28,12,10,82,0,0,0,0,0,0,0,0,0,0,0,179,181,413,395,416,393,552,553,779,754,754,754,754,754,747,747,747,747,886,879,954,797,777,763,699,637]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d6 {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack} 7. a5 $146 (7. Re1 Be6 8. Bxe6 fxe6 9. Nc3 Qe8 10. Ne2 Nh5 11. Ng3 Nf4 12. c3 Qf7 13. d4 exd4 14. cxd4 d5 15. Bxf4 Qxf4 16. exd5 exd5 {1-0 (39) Kobalia,M (2609)-Postny,E (2605) Moscow 2019}) ({Predecessor:} 7. Re1 Kh8 8. h3 Ng8 9. Nc3 f5 10. Nd5 fxe4 11. dxe4 Bf6 12. a5 {½-½ (41) Udeshi,A (2379)-Ghosh,D (2288) Aurangabad 2011}) 7... a6 8. h3 Kh8 {The position is equal.} 9. Re1 Ng8 10. Nc3 f5 11. Nd5 fxe4 12. dxe4 Bf6 13. Ra3 ({But not} 13. Nxf6 Qxf6 14. Ra3 (14. Bg5 Qg6 $17) 14... h6 $11) 13... Nce7 {[%cal Bc6e7,Be7g6,Bg6f4][%mdl 32]} 14. Nxf6 Nxf6 15. Ng5 Qe8 16. Ne6 Bxe6 $1 17. Bxe6 Ng6 18. Ba2 Nf4 19. b4 Qg6 {[%csl Gf4][%cal Rg6g2]} 20. Rg3 Qh6 21. Rc3 Rac8 22. Qf3 g5 23. Bxf4 gxf4 24. Qd3 f3 {[#]} (24... Qg7 $11 {remains equal.}) 25. Qxf3 (25. Be6 $1 $16 {[%cal Re6c8]} Nxe4 26. Bxc8 Nxc3 27. Qxc3 Rxc8 28. Qxf3) 25... Nd5 $1 $11 {[%mdl 64] Discovered Attack} 26. Bxd5 Rxf3 27. Rxf3 c6 28. Bb3 Qd2 29. Ree3 $1 Qxb4 30. Rf7 Qxa5 $2 {[#]} (30... Re8 $11 {and Black is okay.}) 31. Be6 $1 $18 {[%cal Re6c8]} Qd8 $2 (31... Rg8) 32. Rg3 ({Much less strong is} 32. Bxc8 Qxc8 33. Ref3 Kg8 $18) 32... Qe8 33. Bb3 d5 (33... c5 {was necessary.} 34. Rgg7 c4) 34. Rgg7 {White is clearly winning.} Rd8 35. Rxh7+ Kg8 36. Rfg7+ Kf8 37. Rxb7 {[%cal Rh7h8]} Kg8 38. Rbg7+ Kf8 39. h4 Qe6 40. h5 Rd6 41. h6 Qxh6 42. Rxh6 Rxh6 43. Ra7 {Accuracy: White = 84%, Black = 44%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "5.2"]
[White "Siddharth, Jagadeesh"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "0-1"]
[ECO "A81"]
[WhiteElo "2301"]
[BlackElo "2491"]
[Annotator "TA"]
[PlyCount "142"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,142,11,12,62,52,84,89,91,82,81,91,85,85,85,80,83,95,94,53,64,33,30,36,52,51,32,26,34,34,35,24,43,20,79,80,94,79,104,33,40,40,43,1,38,0,0,0,22,18,59,53,68,70,60,64,58,0,0,0,0,0,8,8,13,0,0,0,0,0,8,0,8,0,8,0,0,0,8,0,0,0,8,8,8,0,8,0,8,0,50,48,58,0,8,0,8,0,42,0,48,0,0,-32,-32,-78,-74,-59,-70,-70,-68,-60,0,-346,-326,-278,-248,-550,-550,-1469,-1191,-29988,-29989,-29989,-1472,-2734,-992,-5612,-5065,-6079,-5810,-2750,-2138]} 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. b4 d6 7. Bb2 e5 {A81: Dutch Defence: 2 g3} (7... c6 8. c4 Na6 9. Qb3 Kh8 10. Nc3 Nc7 11. Rad1 a5 12. a3 axb4 13. axb4 Be6 14. d5 cxd5 15. cxd5 Bg8 {0-1 (53) Stefansson,H (2538)-Sethuraman,S (2638) Sitges 2019}) 8. dxe5 Nfd7 9. Qd5+ Kh8 {White is better.} 10. Bc3 dxe5 11. Nxe5 Nxe5 12. Bxe5 Qxd5 13. Bxg7+ Kxg7 14. Bxd5 c6 15. Bf3 $146 (15. Bb3 {is interesting.} a5 16. bxa5 Rxa5 17. Nc3 Rc5 18. Na4) ({Predecessor:} 15. Bb3 Na6 16. a3 f4 17. Nc3 Bh3 18. Rfd1 {1-0 (18) Kalinitschew,S (2491)-Issel,O (2158) Berlin 2005}) 15... a5 16. bxa5 Rxa5 17. Nd2 Nd7 18. Nb3 Ra3 19. Rfd1 Ne5 20. Bg2 Re8 21. e3 Kf6 22. Nd4 Nf7 (22... Re7 $11) 23. Rd3 $16 Ra6 24. Rb3 g5 25. Bf1 ({White should try} 25. a4 $16) 25... Ra4 $14 26. Rb6 Re5 27. Rd1 g4 28. h4 Rxa2 29. Bc4 Ra8 30. Nb5 Re7 31. Bxf7 Rxf7 32. Nd6 Rd7 {White must now prevent ...Ke6.} 33. Rd3 Re7 34. Nxc8 (34. Rd4 $14) 34... Rxc8 {[%mdl 4096] Endgame KRR-KRR} 35. Rdb3 Rcc7 36. Kf1 Ke6 37. Ke2 Kd5 38. Rb1 Kc5 39. R1b3 Red7 40. Rb1 Kd6 41. R1b4 h5 42. Ke1 Ke7 43. Rf4 Rd5 44. Rfb4 Rdd7 45. Rf4 Ke6 46. Rfb4 Rf7 47. Ke2 Rcd7 48. Ke1 Kf6 49. Rb1 Kg7 50. Ra1 Rde7 51. Ra7 Rd7 52. Ra1 (52. Rb3 $14) 52... Kf6 53. Rab1 Rfe7 54. Ra1 Ke6 55. Ra5 Rf7 (55... Rd5 {looks sharper.} 56. Ra7 Red7 57. Kf1 Rd1+ 58. Kg2 Rc1) 56. Rb3 (56. Ra8 {feels hotter.} Rh7 57. Re8+ Rhe7 58. Rb8 Kd5 59. Rb4) 56... Rd5 57. Rxd5 (57. Ra8 {with more complications.} Rfd7 58. Rb1 Rc5 59. Re8+ Kf6 60. Rd1) 57... Kxd5 $11 {KR-KR} 58. Rd3+ Kc4 $1 59. Kd2 c5 $1 60. Kc1 Re7 61. Rd6 Re5 (61... b5 $15) 62. Rh6 $2 {[%mdl 8192] [#]} (62. Rb6 $1 $11 {and White has nothing to worry.}) 62... Kc3 $1 $19 63. Rxh5 c4 64. Rg5 $2 (64. Rh7 {was the crucial defense.} Rd5 65. Rc7 (65. Rxb7 $2 Rd2 $17 {[%mdl 64] Double Attack})) 64... b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 65. h5 {[#] h6 is the strong threat.} b4 $1 {( -> ...Ra5)} 66. h6 Ra5 {[%cal Ra5a1]} 67. Kd1 Ra1+ (67... b3 $142 68. h7 bxc2+ 69. Ke2 c1=Q 70. h8=Q+ Kb3 71. Qb8+ Kc2 72. Qd6 Ra2 73. Rxg4 fxg4 74. Qd2+ Qxd2+ 75. Kf1 Ra1+ 76. Kg2 Qe1 77. Kh2 Qxf2#) 68. Ke2 {Black is clearly winning.} Rh1 (68... Kxc2 $142 69. Rg8 b3) 69. Rxf5 Kxc2 70. Rf4 Kc3 71. Rxg4 Rxh6 {Accuracy: White = 44%, Black = 42%.} 0-1

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "5.3"]
[White "Plat, Vojtech"]
[Black "Dev, Shah"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "2589"]
[BlackElo "2320"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,68,29,0,17,0,27,8,16,8,32,9,22,-22,24,2,5,54,182,200,211,110,133,121,161,120,270,256,265,248,245,159,151,148,146,74,75,76,100,92,98,96,105,114,110,97,155,157,160,130,144,139,328,323,510,508,491,502,697,681,851]} 1. d4 d5 2. Nf3 Nf6 3. e3 c6 4. Bd3 Bg4 5. Nbd2 Nbd7 6. c4 (6. h3 $5 {[%cal Rh3g4]} Bh5 7. O-O $14) 6... e6 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} (6... e5 $5 {[%cal Re5e4]} 7. cxd5 cxd5 8. dxe5 Nxe5 $11 {[%mdl 64] Pin}) 7. Qc2 (7. O-O Bd6 8. b3 O-O 9. Bb2 a5 10. Qc2 Qb8 11. h3 Bh5 12. Ng5 Bg6 13. Bxg6 hxg6 14. a4 Bb4 15. Ndf3 Nh7 16. Nxh7 Kxh7 17. e4 {1-0 (54) Andreikin,D (2712)-Korobov,A (2652) Huaian 2017}) 7... Bd6 8. b3 O-O {The position is equal.} 9. Bb2 Qb8 10. Ng5 {[%cal Rd3h7]} g6 $146 ({Predecessor:} 10... h6 11. Nh7 Nxh7 12. Bxh7+ Kh8 13. h3 {½-½ (41) Rombaldoni,D (2469)-Kapnisis,S (2516) Rijeka 2009}) 11. h4 Bf5 12. h5 Bxd3 13. Qxd3 e5 (13... h6 $14) 14. hxg6 $18 hxg6 15. O-O-O (15. cxd5 $18 cxd5 16. e4) 15... e4 $16 16. Qe2 Kg7 17. f3 Qe8 (17... exf3 $16 18. Qxf3 (18. Ndxf3 Qe8 $14) 18... Rh8) 18. fxe4 $18 dxe4 19. Qf2 Qe7 20. d5 {[#] Threatening mate with Rh7+.} Be5 {aiming for ...Bxb2+.} 21. Ndxe4 cxd5 22. cxd5 (22. Rxd5 $142 Nxd5 23. Rh7+ Kg8 24. cxd5) 22... Nxe4 $16 23. Nxe4 $40 {[%mdl 128] White is out for blood.} Bxb2+ 24. Qxb2+ f6 25. Qd4 {Strongly threatening Ng5.} Rae8 26. Rh4 Rh8 27. d6 Qe5 ({Black should try} 27... Qe6 28. Rxh8 Rxh8) 28. Qxe5 fxe5 29. Rhh1 Rxh1 30. Rxh1 Re6 $2 {[#]} (30... Rd8 $16 {keeps fighting.} 31. Rf1 b6) 31. Kb2 $18 Nf6 (31... g5 {might work better.} 32. b4 Re8) 32. Rd1 {White is clearly winning.} Re8 33. Nc5 Rb8 34. d7 Ra8 {Accuracy: White = 41%, Black = 30%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "5.4"]
[White "Kovalev, Andrei"]
[Black "Makarian, Rudik"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2489"]
[BlackElo "2403"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,17,0,-2,11,-13]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 O-O {C47: Scotch Four Knights and Four Knights with 4 g3} 9. O-O {Predecessor:} cxd5 $146 10. Bg5 c6 11. Qf3 Bd6 12. Rae1 Rb8 13. Nd1 h6 14. Bxf6 Qxf6 15. Qxf6 gxf6 16. b3 f5 17. Ne3 f4 18. Nf5 Bxf5 19. Bxf5 Kg7 20. g3 Kf6 21. Bd3 {½-½ (30) Movsesian,S (2654)-Ding,L (2811) Khanty-Mansiysk 2019} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.21"]
[Round "5.5"]
[White "Baenziger, Fabian"]
[Black "Bracker, Arne"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2412"]
[BlackElo "2243"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,61,86,97,126,123,135,116,113,83,91,79,89,95,92,55,93,47,291,267,289,296,575,577,583,596,823,431,434,425,438,432,436,427,409,403,5357,5297]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Rd1 b6 9. b3 Bb7 10. Nc3 Rc8 11. e4 c5 12. exd5 exd5 13. Bb2 dxc4 14. d5 {Threatens to win with d6.} Bd6 {E08: Closed Catalan: Main Line: 7 Qc2} (14... Ne8 15. Nb5 Bf6 16. Nxa7 cxb3 17. axb3 Bxb2 18. Qxb2 Ra8 19. Nd2 Qc7 20. Nc4 Nd6 21. Nc6 Rfe8 22. Rxa8 Bxa8 {½-½ (31) Szczepanski,Z (2515)-Antonov,N (2415) ICCF email 2014}) 15. bxc4 a6 16. Bh3 $146 ({Predecessor:} 16. a4 Re8 17. Re1 Ne5 18. Ne4 Nxe4 19. Rxe4 Ng6 20. Rae1 Rxe4 21. Qxe4 Qe7 22. Qc2 {1-0 (37) Odendahl,R (2389)-Hecht,H (2384) Solingen 2005}) 16... Re8 {White is better.} 17. Ng5 Be5 18. Rab1 Rb8 19. Re1 {Hoping for Bxd7.} h6 20. Nf3 Bd6 21. Nh4 Ne5 $2 {[#]} ({Black should try} 21... b5 $14) 22. Ne4 $1 $18 {[%cal Re4f6]} Nxe4 23. Rxe4 ({Weaker is} 23. Qxe4 b5 $11) 23... Bc8 $2 {[#]} (23... b5 {was necessary.}) 24. Bxc8 $1 Qxc8 25. Rbe1 g5 26. Bxe5 Rxe5 27. Rxe5 Bxe5 28. Rxe5 {Black must now prevent Nf5.} gxh4 29. Qd2 Kh7 30. Qf4 Qc7 (30... Qg8 $142 31. Qxh4 Qg6) 31. d6 {Accuracy: White = 67%, Black = 35%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.22"]
[Round "6.1"]
[White "Bai, Adelard"]
[Black "Bracker, Arne"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2430"]
[BlackElo "2243"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,108,6,17,8,10,0,15,10,28,0,26,20,18,0,-4,-18,16,-10,28,0,15,0,0,0,0,-57,-29,-29,-10,-22,-17,-29,-30,-127,-114,-164,-170,-191,-165,-316,-312,-292,-301,-294,-316,-370,-371,-421,-418,-429,-429,-414,-420,-456,-415,-408,-403,-489,-429,-477,-418,-575,-459,-449,-445,-564,-524,-571,-535,-512,-405,-517,-504,-819,-812,-781,-737,-1575,-1589,-1277,-1272,-1085,-1027,-2391,-2215,-6697,-6081,-4914,-1867]} 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. Bg5 Nbd7 11. Nc3 h6 12. Bxf6 {E05: Open Catalan: 5 Nf3 Be7} Nxf6 13. Rac1 (13. Rfd1 Qd6 14. Qd3 Rfd8 15. e4 Qb4 16. Qc2 Rac8 17. Rd2 Qb6 18. Rad1 Bb4 19. Ne5 Be8 {0-1 (60) Le,Q (2713)-Aronian,L (2775) Moscow 2019}) 13... a5 14. Rfd1 {The position is equal.} Bb4 15. Nb5 Bxf3 $146 ({Predecessor:} 15... Qe7 16. Ne5 Bxg2 17. Kxg2 c6 18. Nc3 Rfd8 19. Qb3 Qc7 {½-½ (33) Loehr,M (2208)-Tschlatscher,T (2125) Wuerttemberg 2017}) 16. Bxf3 c6 17. Nc3 Qe7 18. e4 Ra6 19. h4 Rd8 20. Ne2 Raa8 21. Nf4 Nd7 22. Bg2 e5 23. Ne2 ({White should play} 23. Ng6 $1 $11 Qd6 24. Nxe5 Nxe5 25. dxe5 Qxe5 26. Qc2) 23... Qf6 24. d5 cxd5 25. exd5 Bc5 $36 {[%mdl 2048] Black is more active.} 26. Rf1 Rac8 {White must now prevent ...Bxf2+!} 27. Qg4 {[#]} (27. Qb5 $11 {remains equal.}) 27... Qb6 $1 $17 28. Nc3 Qxb2 {...Bxf2+! is the strong threat.} 29. Qf3 Nf6 30. Rb1 $2 {[#]} (30. Bh3 {was necessary.} e4 31. Qe2 Qxe2 32. Nxe2) 30... Qxc3 $1 {[%mdl 512]} 31. Qxc3 Bxf2+ $1 {[%mdl 64] Discovered Attack} 32. Rxf2 Rxc3 33. Rxb7 Rxg3 34. Rb5 Rxd5 35. Rxd5 Nxd5 $19 {[%mdl 4096] Endgame KRB-KRN} 36. Kh2 Rd3 37. Rc2 {And now Rc8+ would win.} g6 38. Rc5 Nf4 {aiming for ...Rd2.} 39. Be4 Rh3+ 40. Kg1 Rxh4 41. Bc6 Nd3 42. Rxa5 e4 43. Ra8+ Kg7 44. Re8 f5 45. a5 {intending a6.} Nb4 46. Bb7 Rh3 {Black is clearly winning.} 47. Re5 (47. Bxe4 $142 fxe4 48. Rxe4) 47... Ra3 48. Rb5 Nd3 49. a6 e3 50. Kf1 Ra2 {( -> ...e2+)} 51. Bf3 Rxa6 52. Ke2 Ra3 53. Rb1 Nf4+ 54. Ke1 Kf6 {Accuracy: White = 22%, Black = 58%.} 0-1

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.22"]
[Round "6.2"]
[White "Makarian, Rudik"]
[Black "Baenziger, Fabian"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2403"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "37"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,37,18,16,19,55,24,156,165,222,198,252,229,257,257,375,337,365,346,332,328,363,363,622,619,643,664,928,924,915,906]} 1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. dxc5 Nc6 5. Bb5 e6 6. b4 {D00: 1 d4 d5: Unusual lines.} Nd7 7. c3 {[#]} Qf6 $146 (7... a5 $11) ({Predecessor:} 7... g5 8. Bg3 Bg7 9. Nf3 a5 10. bxa5 Qxa5 11. a4 Nxc5 12. Nxg5 h6 13. Nf3 Ne4 14. O-O O-O 15. Ra3 Rd8 16. Bh4 Rd6 17. Nfd2 Nc5 18. Nc4 {1-0 (18) Jakubowski,K (2564)-Santos,A (2247) Figueira da Foz 2015}) 8. Nf3 $16 {White is clearly better.} e5 {[#]} (8... a5 $142) 9. Bg3 $1 $18 e4 (9... a6 $142) 10. Nd4 h5 11. h4 Nce5 (11... Be7 {might work better.} 12. Qa4 Nce5) 12. Qb3 a6 13. Bxd7+ Bxd7 14. Qxd5 {[%mdl 64] [#] Double Attack} Nd3+ 15. Ke2 Bg4+ $2 (15... Bc6 16. Nxc6 Qxc6 17. Qxc6+ bxc6) 16. f3 {White is clearly winning.} Qg6 17. Nd2 Bxf3+ 18. gxf3 Qxg3 19. Qxe4+ {Accuracy: White = 92%, Black = 19%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.22"]
[Round "6.3"]
[White "Dev, Shah"]
[Black "Kovalev, Andrei"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2320"]
[BlackElo "2489"]
[Annotator "ChessBase"]
[PlyCount "81"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:02:38]} d6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:45]} e5 {[%emt 0:00:11]} 3. Nc3 {[%emt 0:00:21]} exd4 {[%emt 0:01:34]} 4. Qxd4 {[%emt 0:00:12]} Nf6 {[%emt 0:00:13]} 5. e4 {[%emt 0:02:22]} g6 {[%emt 0:03:11]} 6. Nf3 {[%emt 0:06:57]} Bg7 {[%emt 0:01:14]} 7. Qd2 {[%emt 0:04:36]} O-O {[%emt 0:03:35]} 8. Bd3 {[%emt 0:01:23]} Nc6 {[%emt 0:04:52]} 9. O-O {[%emt 0:06:20]} Bg4 {[%emt 0:01:00]} 10. Ne1 {[%emt 0:00:20]} Re8 {[%emt 0:05:26]} 11. Nc2 {[%emt 0:06:48]} Ne5 {[%emt 0:07:18]} 12. f3 {[%emt 0:13:24]} Be6 {[%emt 0:03:01]} 13. b3 {[%emt 0:10:56]} c6 {[%emt 0:05:56]} 14. Ba3 {[%emt 0:14:49]} d5 {[%emt 0:06:04]} 15. cxd5 {[%emt 0:02:00]} cxd5 {[%emt 0:01:18]} 16. Rad1 {[%emt 0:01:09]} Qb6+ {[%emt 0:07:47]} 17. Kh1 {[%emt 0:05:03]} Nxd3 {[%emt 0:06:00]} 18. Qxd3 {[%emt 0:00:34]} dxe4 {[%emt 0:00:59]} 19. fxe4 {[%emt 0:03:45]} Ng4 {[%emt 0:09:05]} 20. Nd4 {[%emt 0:01:15]} Rad8 {[%emt 0:06:56]} 21. Nce2 {[%emt 0:01:11]} Qc7 {[%emt 0:02:35]} 22. g3 {[%emt 0:00:22]} Qa5 {[%emt 0:00:10]} 23. Bc1 {[%emt 0:05:13]} Qxa2 {[%emt 0:07:36]} 24. Rd2 {[%emt 0:01:24]} Qa5 {[%emt 0:01:24]} 25. Qb5 {[%emt 0:00:43]} Qxb5 {[%emt 0:01:15]} 26. Nxb5 {[%emt 0:00:02]} Rxd2 {[%emt 0:01:43]} 27. Bxd2 {[%emt 0:00:28]} Bxb3 {[%emt 0:00:09]} 28. Rf4 {[%emt 0:01:03]} Rxe4 {[%emt 0:02:38]} 29. Rxe4 {[%emt 0:00:37]} Nf2+ {[%emt 0:00:04]} 30. Kg2 {[%emt 0:00:10]} Nxe4 {[%emt 0:00:04]} 31. Be3 {[%emt 0:00:23]} Bc4 {[%emt 0:02:34]} 32. Nbd4 {[%emt 0:00:09]} a5 {[%emt 0:00:45]} 33. Kf3 {[%emt 0:00:14]} f5 {[%emt 0:01:12]} 34. g4 {[%emt 0:00:07]} Bxe2+ {[%emt 0:01:58]} 35. Nxe2 {[%emt 0:00:17]} a4 {[%emt 0:00:25]} 36. Bc1 {[%emt 0:00:10]} b5 {[%emt 0:00:19]} 37. gxf5 {[%emt 0:00:09]} gxf5 {[%emt 0:00:00]} 38. Ba3 {[%emt 0:00:02]} Nd2+ {[%emt 0:00:19]} 39. Kf4 {[%emt 0:00:07]} Nc4 {[%emt 0:00:02]} 40. Bb4 {[%emt 0:00:03]} a3 {[%emt 0:00:14]} 41. Nc1 {[%emt 0:30:11]} 0-1

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.22"]
[Round "6.4"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Plat, Vojtech"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2491"]
[BlackElo "2589"]
[Annotator "TA"]
[PlyCount "30"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,30,25,31,32,39,13,22,0,0,0,0,-9,-9,-15,-4,-21,-18,-7,-10,-6,0]} 1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Nf3 Bd6 7. Be3 {B07: Pirc Defence: Miscellaneous Systems} Ke7 (7... a6 8. O-O-O Nbd7 9. h3 Ke7 10. Nd2 b5 11. f3 Bc5 12. Bg5 c6 13. Nb3 Bb6 14. Kb1 h6 {½-½ (58) Hovhannisyan,R (2637)-Khismatullin,D (2621) St Petersburg 2018}) 8. O-O-O Be6 {The position is equal.} 9. Ng5 Ng4 $1 10. Nxe6 Nxe3 11. Rd3 $146 {Nxc7 is the strong threat.} ({Predecessor:} 11. Rxd6 Kxd6 12. Ng5 f6 13. Nf7+ Ke6 14. Nxh8 Nxf1 15. Nd5 Na6 16. Rxf1 c6 {½-½ (16) Staroske,U (2306)-Bocanegra Moreno,R (2335) LSS email 2010}) 11... fxe6 ({Wrong is} 11... Nxf1 $2 12. Nxg7 Rg8 13. Nf5+ Ke6 14. Rxf1 $18) 12. Rxe3 Bc5 13. Rg3 g6 14. Nd1 Nd7 15. Rd3 Rad8 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.22"]
[Round "6.5"]
[White "Swicarz, Maciej"]
[Black "Siddharth, Jagadeesh"]
[Result "0-1"]
[ECO "A35"]
[WhiteElo "2357"]
[BlackElo "2301"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,88,12,-4,22,18,75,75,80,75,80,72,110,100,126,117,137,161,181,179,204,163,221,170,275,276,302,181,160,158,177,85,130,133,151,135,131,58,67,-18,-19,-39,-41,-38,0,-38,0,0,3,-102,17,-105,-18,-152,-159,-290,-187,-274,-250,-360,-350,-409,-380,-712,-703,-736,-733,-722,-708,-1027,-1029,-820,-1115,-1101,-1058,-956,-883,-1516,-788]} 1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. e3 Nf6 5. d4 cxd4 6. exd4 d5 7. Bg5 {Hoping for Bxf6.} Bg7 {A35: Symmetrical English: 2 Nc3 Nc6 3 Nf3} (7... Be6 8. Bxf6 exf6 9. Be2 Bb4 10. cxd5 Bxd5 11. O-O O-O 12. Rc1 Bxf3 13. Bxf3 Nxd4 14. Bxb7 Rb8 15. Nd5 Ne6 16. Nxb4 Rxb7 {½-½ (37) Ivanchuk,V (2713)-Muzychuk,A (2569) Caleta 2019}) 8. Bxf6 Bxf6 (8... exf6 $11 9. cxd5 Ne7) 9. cxd5 $16 Nb8 {White is better.} 10. Bc4 O-O 11. h3 Qc7 $146 ({Predecessor:} 11... Na6 12. O-O Nc7 13. a4 Ne8 14. Re1 Nd6 15. Bb3 {½-½ (62) Kraai,J (2453)-Zaichik,G (2516) Seattle 2003}) 12. Bb3 $36 {[%mdl 2048] White is really pushing.} b5 13. O-O a6 14. Rc1 Qb6 15. Ne5 Bb7 16. Qg4 Kg7 (16... a5 $142 17. d6 e6) 17. Nd1 Qd6 (17... a5 $142) 18. Ne3 $18 Kh8 19. f4 (19. Qg3 $142) 19... a5 20. Rc5 Qb6 21. Kh1 (21. Qe2 $18 {is more deadly.}) 21... a4 22. Bc2 Na6 23. Nd7 {[%mdl 64] Double Attack} Qd6 {next ...h5 is good for Black.} 24. Nxf8 (24. Nxf6 $16 Qxf6 25. Rxb5) 24... Nxc5 $14 25. Nxh7 ({White should play} 25. dxc5 $14 Qxc5 26. Nd7 Qxe3 27. Nxf6 exf6 28. Qd7 {[%mdl 64] Double Attack}) 25... Kxh7 $11 26. f5 {[%cal Rf5g6]} g5 {And now ...Na6 would win.} 27. dxc5 Qxc5 28. Qf3 Qd4 29. Be4 Qxb2 {[#]} 30. h4 (30. d6 $1 $11 {[%mdl 512]} Bxe4 (30... exd6 31. Bxb7) 31. Qxe4 {[%mdl 64] Double Attack}) 30... gxh4 {[#]} (30... Rh8 $1 $17 {White must now prevent ...Kg7.} 31. Kg1 gxh4) 31. Rg1 (31. d6 $1 $11 {[%mdl 512]} Bxe4 (31... exd6 32. Bxb7) 32. Qxe4) 31... Rg8 {[#]} ({Of course not} 31... Qxa2 $6 32. d6 $1 $11 {[%mdl 512]}) (31... Rc8 $1 $17 32. Ng4 Rc4) 32. g4 {[#]} (32. d6 $1 $11 {[%mdl 512] keeps the balance.} Bxe4 (32... exd6 33. Bxb7) 33. Qh5+ Kg7 34. Qg4+ Kf8 35. dxe7+ Bxe7 36. Qxe4) 32... Rg5 $1 $17 ({Weaker is} 32... Qxa2 {[#]} 33. g5 $1 $11 {[%mdl 512]}) 33. Rg2 (33. Nd1 $17 Qxa2 34. Nf2) 33... Qc1+ 34. Rg1 (34. Nd1 {keeps fighting.}) 34... Qc3 35. Qf2 (35. Kg2 $142) 35... Kg8 $19 {Strongly threatening ...Bd4.} 36. Qf4 b4 {[%cal Bb5b4,Bb4b3][%mdl 32]} 37. Rb1 $2 (37. Nd1 Qd4 38. Ne3) 37... b3 {Black is clearly winning.} 38. a3 b2 39. Kg2 Qxa3 40. Nc4 Qb3 41. Rxb2 Qxc4 42. Rxb7 a3 {[%cal Ba4a3,Ba3a2][%mdl 32]} 43. Ra7 a2 44. Kh2 Qc3 {Accuracy: White = 23%, Black = 43%.} 0-1

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.23"]
[Round "7.1"]
[White "Siddharth, Jagadeesh"]
[Black "Bai, Adelard"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2301"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,89,10,1,48,41,48,0,0,0,34,14,28,0,0,0,31,35,21,23,30,37,35,35,65,21,41,18,46,48,188,175,186,189,188,177,401,203,233,232,253,237,263,255,310,309,318,321,348,352,352,318,457,441,435,402,632,612,701,529,479,435,428,337,432,432,435,429,1108,1077,29990,683,1101,1102,29990,29991,29992,29993,29994,29995]} 1. d4 d5 2. e3 Nf6 3. Bd3 e6 4. Nf3 c5 5. b3 cxd4 6. exd4 Nc6 7. O-O Ne4 {D05: Colle System with ...e6} (7... g6 8. Re1 Bg7 9. Ba3 Ne7 10. Nbd2 O-O 11. Ne5 b6 12. Qe2 Bb7 13. Rad1 Qc7 14. Ndf3 Nf5 15. Bxf8 Rxf8 {½-½ (44) Karjakin,S (2750)-Yu,Y (2752) Saint Louis 2019}) 8. Bb2 f5 9. Ne5 $146 ({Predecessor:} 9. c4 Bd6 10. Nc3 Ne7 11. Ne5 O-O 12. Qe1 b6 13. Nb5 Bb8 14. cxd5 exd5 15. f3 {1-0 (39) Biljanic,L (2260)-Nomin Erdene,D (2421) Novi Sad 2016}) 9... Nxe5 {The position is equal.} 10. dxe5 Be7 11. Qh5+ g6 12. Qe2 Bd7 13. c4 {[#] aiming for cxd5.} O-O 14. cxd5 exd5 15. Nc3 {[%cal Bb1c3,Bc3b5,Bb5d6][%mdl 32]} Be6 16. Nb5 $36 {[%mdl 2048] White has some pressure.} Bc5 17. Rac1 {Bxe4 is the strong threat.} Qe7 18. Nd6 {[%cal Rd3e4]} Bb6 19. Ba3 Qg5 20. Nxb7 f4 (20... Rac8 $14) 21. Bxe4 $18 ({Stronger than} 21. Bxf8 Rxf8 22. h4 (22. Bxe4 $2 dxe4 23. h4 Qxe5 $19) 22... Qxe5 $11) 21... dxe4 22. Qxe4 ({But not} 22. Bxf8 $2 {[#]} f3 $1 $19 {[%mdl 512]}) 22... f3 {[%csl Gf3][%cal Rg5g2]} 23. g3 Qh5 $2 (23... Qf5 24. Qxf5 Rxf5) 24. h4 (24. Bxf8 $142 Rxf8 25. h4) 24... Rfc8 25. Bc5 Qf5 26. Qxf5 Bxf5 27. b4 Rc7 28. Nd6 Be6 29. a3 Rc6 30. Rc3 Bxc5 31. Rxc5 Ra6 (31... Rxc5 {was called for.} 32. bxc5 Bd5) 32. Rc3 Rf8 33. Ne4 Rf5 (33... h5 $142 34. Ng5 Rc8) 34. Nf6+ Kf8 35. Nxh7+ Kg7 36. Ng5 Rxe5 37. Nxe6+ Rexe6 38. Rxf3 {[%mdl 4096] Endgame KRR-KRR} Re2 39. Rc1 Ra2 (39... Re7 $142 40. Kg2 Rd6) 40. Rc7+ Kh6 41. Rff7 (41. g4 $142 Rc6 42. Rxc6 Rd2 43. Rf7 Rd4 44. f3 Rd5 45. Kg2 Re5 46. Rcc7 Re2+ 47. Kg3 Rg2+ 48. Kxg2 g5 49. Rf6#) 41... Kh5 42. Rc5+ Kh6 43. g4 {White mates.} g5 44. h5 R2xa3 45. Rcc7 {Accuracy: White = 63%, Black = 13%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.23"]
[Round "7.2"]
[White "Plat, Vojtech"]
[Black "Swicarz, Maciej"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2589"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,97,0,0,-12,61,47,50,50,54,53,61,80,74,53,108,75,104,68,75,87,104,71,75,88,123,120,115,118,126,130,146,147,228,200,218,110,118,112,112,116,118,117,106,81,177,177,177,177,177,177,399,411,411,401,411,236,251,230,411,411,411,411,397,396,599,386,375,363,348,350,335,328,463,455,631,557,608,589,679,674,1174,1156,1095,1059,1040,1026,889,583,904,788]} 1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Nbd2 d5 5. c4 c5 (5... O-O 6. b4 a5 7. b5 c5 8. bxc6 Nxc6 9. Ba3 Bf5 10. Nh4 Bg4 11. Be2 Bxe2 12. Qxe2 e5 13. Bxf8 Qxf8 14. dxe5 Nxe5 {½-½ (128) Stefanova,A (2481)-Batsiashvili,N (2528) Tbilisi 2018}) 6. dxc5 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} Qa5 ({Black should play} 6... O-O $11) 7. a3 $14 dxc4 $146 ({Predecessor:} 7... Qxc5 8. b4 Qd6 9. Bb2 O-O 10. cxd5 Qxd5 11. Bc4 Qd8 {½-½ (28) Ankitha,G (1630)-Chandreyee,H (1818) Bihar 2014}) 8. Bxc4 {White is slightly better.} Qxc5 9. b4 Qb6 10. Bb2 O-O 11. O-O $36 {[%mdl 2048] White is pushing.} Bd7 (11... Be6 $14) 12. Rc1 Bb5 13. Nd4 Bxc4 14. Nxc4 Qd8 15. Na5 b6 16. Nac6 Nxc6 17. Nxc6 ({Resist} 17. Rxc6 Qd5 $14) 17... Qc7 18. Be5 Qb7 19. Qd4 Ne8 20. Rfd1 f6 (20... h6 $16 21. e4 Kh7) 21. Qc4+ $18 Kh8 22. Nd8 (22. Bg3 $18) 22... Nd6 $16 ({Wrong is} 22... Rxd8 $2 23. Rxd8 fxe5 24. Qc8 $18) 23. Nxb7 Nxc4 24. Rxc4 {[#] Strongly threatening Bc7.} fxe5 25. Rc7 Bf6 26. e4 Rfc8 {[#]} (26... h5 $16) 27. Rxc8+ $1 $18 Rxc8 28. Rd8+ Rxd8 29. Nxd8 {[%mdl 4096] Endgame KB-KN} b5 $2 (29... Kg7 30. b5 Kf8) 30. Ne6 a6 31. Kf1 Kg8 32. Ke2 (32. Nc7 $142) 32... Kf7 33. Nc7 Bg5 $2 (33... e6 34. Nxa6 Bd8) 34. Nxa6 Bc1 35. Kd3 Bxa3 {intending ...Ke6.} 36. Kc3 Ke6 (36... Bc1 $142 37. Nc7 Bf4) 37. Nc7+ Kd7 38. Nxb5 Bc1 39. Kc4 Kc6 40. Nc3 e6 (40... Kd6 $142 41. Na4 g5) 41. Na4 {White is clearly winning.} Bd2 42. Nc5 Kd6 43. b5 Be1 44. b6 Bxf2 45. b7 Kc7 46. Nxe6+ Kxb7 47. Kd5 Bg1 48. h3 Bh2 49. Nf8 {Accuracy: White = 68%, Black = 44%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.23"]
[Round "7.3"]
[White "Kovalev, Andrei"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2489"]
[BlackElo "2491"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,29,0,13,0,0,2,4,0,4,8,3,-2]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Bg5 Be6 9. Bxf6 Bxf6 10. Qd3 O-O {The position is equal.} 11. Rd1 {B92: Sicilian Najdorf: 6 Be2} Be7 12. Nd5 Bxd5 13. Qxd5 Qc7 14. c3 Nd7 15. O-O {[#]} {Predecessor:} b5 $146 16. Na1 Rad8 17. Bf3 Nb6 18. Qb3 {½-½ (30) Almasi,Z (2702)-Yakubboev,N (2521) Batumi 2018} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.23"]
[Round "7.4"]
[White "Baenziger, Fabian"]
[Black "Dev, Shah"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2412"]
[BlackElo "2320"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,75,4,10,15,2,10,6,10,0,51,58,50,50,49,48,48,8,26,34,33,16,45,42,28,24,175,166,112,106,141,147,218,231,211,222,232,223,218,125,135,105,167,88,193,194,200,204,187,193,237,242,283,270,364,343,29986,254,29987,29988]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Qc2 b6 7. b3 Bb7 8. Bb2 Be7 9. Be2 O-O 10. O-O Qc7 {D45: Semi-Slav: 5 e3} (10... Rc8 11. Rfd1 Qc7 12. Rac1 Rfe8 13. h3 h6 14. Qb1 Qb8 15. e4 dxe4 16. Nxe4 c5 17. Nxf6+ Nxf6 18. dxc5 Bxc5 19. Be5 Qa8 {½-½ (33) Ljubojevic,L (2571)-Salgado Lopez,I (2643) Linares 2018}) 11. Rad1 Rad8 12. Ne5 $146 ({Predecessor:} 12. Rfe1 Rfe8 13. Bf1 Qb8 14. g3 Qa8 15. Bg2 dxc4 16. bxc4 c5 17. d5 exd5 18. cxd5 Nxd5 19. Nxd5 Bxd5 {0-1 (43) Jorczik,J (2399)-Blomqvist,E (2506) Barcelona 2014}) 12... c5 {The position is equal.} 13. Nxd7 Nxd7 (13... Rxd7 $11 14. cxd5 Nxd5) 14. cxd5 $14 exd5 15. Nb5 Qb8 16. dxc5 bxc5 17. Rd2 a6 18. Nc3 $36 {[%cal Bb5c3,Bc3e2,Be2g3][%mdl 2080] White is pushing.} Nb6 19. Bd3 h6 20. Ne2 Bd6 21. Ng3 Nd7 $2 {[#]} (21... Rfe8 $1 $11) 22. f4 $1 $18 (22. Bh7+ $6 Kh8 $14) 22... d4 (22... Qc7 $18 23. Qd1 (23. Bh7+ Kh8 $16) 23... d4) 23. Nh5 (23. exd4 $6 Bxf4 24. Rdf2 Bxg3 $14) 23... Be7 24. exd4 Nf6 (24... cxd4 $16 25. Bxd4 Nf6 26. Nxf6+ Bxf6 27. Bxf6 gxf6) 25. Nxf6+ Bxf6 26. dxc5 ({Don't do} 26. Qxc5 Rd5 $16) 26... Bxb2 27. Qxb2 Rd5 28. Bc4 (28. Qc2 $18) 28... Rxc5 $16 29. f5 Rd8 (29... Bc8 $16) 30. Rd4 (30. f6 $18 g6 31. Rfd1 Rxd2 32. Qxd2) 30... Rxd4 (30... Qc7 $16) 31. Qxd4 $18 Qe5 32. Qxe5 ({Don't take} 32. Qd8+ $6 Kh7 $14) 32... Rxe5 {[%mdl 4096] Endgame KRB-KRB} 33. Rd1 Bc6 34. Rd8+ Kh7 35. g4 ({Less strong is} 35. Bxf7 Rxf5 36. Rd6 Rf6 $16) 35... h5 36. Bxf7 Be4 $2 {[#]} (36... hxg4 $18 37. Bg8+ Kh8 38. Bf7+ Kh7 39. Bg8+ Kh8 40. Bf7+ Kh7) 37. Bg6+ Kh6 38. h4 {Accuracy: White = 63%, Black = 51%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.23"]
[Round "7.5"]
[White "Bracker, Arne"]
[Black "Makarian, Rudik"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2243"]
[BlackElo "2403"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,44,36,43,9,39,54,54,44,33,43,39,0,0,0,243,239,371,376,776,745,721,510,29996,948,911,929,924,910,1138,1131,1093,1079,1205,1176,1925]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qf3 $146 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2} (7. Bd3 Nf6 8. O-O Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Na4 Qc7 12. c4 d6 13. Nc3 O-O 14. Be2 Rd8 15. Qd4 e5 16. Qe3 Be6 17. b3 Qc5 18. Qd3 Rac8 19. Rac1 {½-½ (35) Jakovenko,D (2719)-Harikrishna,P (2723) Shenzhen 2019}) 7... Ne5 8. Qg3 Bd6 {Strongly threatening ...Nd3+!} 9. f4 {White is slightly better.} Ng6 $1 {[%cal Rd6f4]} 10. e5 Bb4 11. O-O-O {And now f5 would win.} Bxc3 12. bxc3 {Threatens to win with f5.} b5 $2 {[#]} (12... N8e7 $11 {and Black is okay.}) 13. f5 $1 $18 exf5 (13... N8e7 $142) 14. Nxf5 {Hoping for Nd6+.} Qxe5 $2 (14... d5) 15. Nd6+ Ke7 16. Bg5+ Ke6 {[#]} (16... Nf6 $18 17. Nxc8+ Kf8) 17. Re1 (17. Bc4+ $142 $1 {[%mdl 512]} bxc4 18. Qg4+ {[%mdl 64] Double Attack} f5 19. Qxc4+ {[%mdl 64] Double Attack} Qd5 20. Qxd5#) 17... Qxe1+ {White is clearly winning.} 18. Qxe1+ Kxd6 19. Qe4 N8e7 20. Bxe7+ Nxe7 21. Qxa8 Nc6 22. Be2 Kd5 {Accuracy: White = 71%, Black = 35%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.24"]
[Round "8.1"]
[White "Bai, Adelard"]
[Black "Makarian, Rudik"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2430"]
[BlackElo "2403"]
[Annotator "NA"]
[PlyCount "82"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 4. g3 {[%emt 0:00:03]} Bb4+ {[%emt 0:00:00]} 5. Bd2 {[%emt 0:00:08]} Be7 {[%emt 0:00:00]} 6. Bg2 {[%emt 0:00:54]} O-O {[%emt 0:00:02]} 7. O-O {[%emt 0:00:14]} Nbd7 {[%emt 0:00:24]} 8. Qc2 {[%emt 0:00:27]} c6 {[%emt 0:00:07]} 9. Rd1 {[%emt 0:02:25]} a5 {[%emt 0:00:05]} 10. b3 {[%emt 0:03:57]} b5 {[%emt 0:07:19]} 11. Ne5 {[%emt 0:11:03]} Nxe5 {[%emt 0:14:20]} 12. dxe5 {[%emt 0:00:08]} Nd7 {[%emt 0:00:02]} 13. Bc3 {[%emt 0:05:58]} Ba6 {[%emt 0:02:52]} 14. Nd2 {[%emt 0:31:31]} Qb8 {[%emt 0:00:03]} 15. cxd5 {[%emt 0:02:17]} cxd5 {[%emt 0:00:13]} 16. e4 {[%emt 0:03:00]} Rc8 {[%emt 0:15:36]} 17. Qb2 {[%emt 0:04:21]} Nc5 {[%emt 0:12:00]} 18. exd5 {[%emt 0:10:35]} Nd3 {[%emt 0:02:36]} 19. Qb1 {[%emt 0:00:52]} Nxf2 {[%emt 0:00:55]} 20. Ne4 {[%emt 0:11:58]} Nxd1 {[%emt 0:07:19]} 21. Qxd1 {[%emt 0:00:07]} Bb7 {[%emt 0:08:03]} 22. d6 {[%emt 0:02:48]} Bxe4 {[%emt 0:00:05]} 23. Bxe4 {[%emt 0:00:11]} Rxc3 {[%emt 0:00:36]} 24. dxe7 {[%emt 0:02:54]} Qa7+ {[%emt 0:00:42]} 25. Kh1 {[%emt 0:00:33]} Re8 {[%emt 0:00:08]} 26. Qh5 {[%emt 0:01:19]} g6 {[%emt 0:00:05]} 27. Qh6 {[%emt 0:00:57]} Qe3 {[%emt 0:01:32]} 28. Qh4 {[%emt 0:00:17]} Rc1+ {[%emt 0:00:46]} 29. Rxc1 {[%emt 0:00:06]} Qxc1+ {[%emt 0:00:04]} 30. Kg2 {[%emt 0:00:04]} Qc7 {[%emt 0:00:05]} 31. Qf4 {[%emt 0:00:22]} Qxe7 {[%emt 0:00:11]} 32. h4 {[%emt 0:00:06]} Kg7 {[%emt 0:02:11]} 33. h5 {[%emt 0:00:07]} h6 {[%emt 0:02:12]} 34. hxg6 {[%emt 0:00:17]} fxg6 {[%emt 0:00:03]} 35. Bd3 {[%emt 0:00:54]} Qf7 {[%emt 0:01:31]} 36. Qe3 {[%emt 0:00:21]} b4 {[%emt 0:00:12]} 37. Qe4 {[%emt 0:03:50]} Rd8 {[%emt 0:00:13]} 38. Kg1 {[%emt 0:00:40]} Rd7 {[%emt 0:00:07]} 39. Qe3 {[%emt 0:01:25]} Qe7 {[%emt 0:01:14]} 40. Bb5 {[%emt 0:00:36]} Rd5 {[%emt 0:00:11]} 41. Bc4 {[%emt 0:30:13]} Qc5 {[%emt 0:30:07]} 0-1

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.24"]
[Round "8.2"]
[White "Dev, Shah"]
[Black "Bracker, Arne"]
[Result "0-1"]
[ECO "B14"]
[WhiteElo "2320"]
[BlackElo "2243"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,74,0,20,10,21,14,11,16,18,15,22,-7,0,-21,-17,-62,-41,-60,-50,-87,-66,-85,-75,-75,-89,-91,-70,-58,-43,-157,-146,-167,-97,-98,-72,-186,-39,-41,-34,-39,-25,-16,-19,-35,-37,-54,0,-1177,-1136,-910,-871,-29969,-29968,-2325,-475,-1900,-2029]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. cxd5 cxd4 8. exd4 exd5 9. Ne5 Nc6 10. Nxc6 bxc6 11. O-O {B14: Caro-Kann: Panov-Botvinnik Attack with 5...e6 and 5...g6} Bd6 12. Bg5 Rb8 13. b3 {The position is equal.} (13. Bxf6 Qxf6 14. Qd2 g6 $17) 13... h6 14. Bh4 Re8 15. Bg3 {[#]} Rb7 $146 ({Predecessor:} 15... Ne4 16. Bxd6 Nxc3 17. Qc2 Ne2+ 18. Bxe2 Qxd6 {½-½ (56) Kritz,L (2541)-Gyimesi,Z (2618) Budapest 2004}) 16. Ba6 Rbe7 17. Bxc8 {Bf5 is the strong threat.} Bxg3 18. Bf5 Bc7 $36 {[%mdl 2048] Black has the initiative.} 19. Bd3 Qd6 {[%csl Gc7][%cal Rd6h2]} 20. g3 h5 21. Qf3 g6 22. Rac1 Bb6 23. Ne2 Ne4 24. Bxe4 ({Better is} 24. Qf4 $15) 24... Rxe4 $17 {[%mdl 64] Double Attack} 25. Rc2 {[#]} Qe6 ({Worse is} 25... Bxd4 26. Nxd4 Rxd4 27. Rfc1 $11) ({Black should try} 25... h4 $1 $19 26. Kh1 Qe6) 26. Nf4 Qd7 {Played: Qe6-f6} 0-1

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.24"]
[Round "8.3"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Baenziger, Fabian"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2491"]
[BlackElo "2412"]
[Annotator "ChessBase"]
[PlyCount "65"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:04:28]} e5 {[%emt 0:00:00]} 2. g3 {[%emt 0:01:23]} Nf6 {[%emt 0:00:15]} 3. Bg2 {[%emt 0:00:23]} c6 {[%emt 0:00:34]} 4. d4 {[%emt 0:00:11]} exd4 {[%emt 0:00:29]} 5. Qxd4 {[%emt 0:00:10]} Na6 {[%emt 0:00:43]} 6. Nf3 {[%emt 0:00:36]} Bc5 {[%emt 0:00:23]} 7. Qe5+ {[%emt 0:06:00]} Be7 {[%emt 0:00:32]} 8. O-O {[%emt 0:00:17]} O-O {[%emt 0:00:07]} 9. Nc3 {[%emt 0:00:53]} Re8 {[%emt 0:00:53]} 10. Rd1 {[%emt 0:04:13]} Bb4 {[%emt 0:01:48]} 11. Qd4 {[%emt 0:00:43]} Nc5 {[%emt 0:01:10]} 12. Bg5 {[%emt 0:02:09]} Ne6 {[%emt 0:02:26]} 13. Bxf6 {[%emt 0:00:26]} Nxd4 {[%emt 0:00:16]} 14. Bxd8 {[%emt 0:00:06]} Nxf3+ {[%emt 0:04:05]} 15. Bxf3 {[%emt 0:00:14]} Rxd8 {[%emt 0:14:07]} 16. Ne4 {[%emt 0:05:36]} d5 {[%emt 0:22:38]} 17. a3 {[%emt 0:05:18]} Ba5 {[%emt 0:13:03]} 18. cxd5 {[%emt 0:00:06]} cxd5 {[%emt 0:00:42]} 19. Nc5 {[%emt 0:02:04]} Bb6 {[%emt 0:00:08]} 20. Na4 {[%emt 0:03:19]} Be6 {[%emt 0:00:41]} 21. Nxb6 {[%emt 0:00:08]} axb6 {[%emt 0:00:05]} 22. Rac1 {[%emt 0:03:47]} Rd7 {[%emt 0:05:22]} 23. Rd4 {[%emt 0:00:33]} Kf8 {[%emt 0:00:44]} 24. Rb4 {[%emt 0:00:45]} Rd6 {[%emt 0:01:19]} 25. Kf1 {[%emt 0:00:50]} Rad8 {[%emt 0:01:05]} 26. Ke1 {[%emt 0:11:08]} Ke7 {[%emt 0:06:30]} 27. Rb5 {[%emt 0:01:54]} R8d7 {[%emt 0:03:01]} 28. Rc8 {[%emt 0:02:16]} Kf6 {[%emt 0:02:46]} 29. Kd2 {[%emt 0:01:07]} Bf5 {[%emt 0:01:43]} 30. Rc3 {[%emt 0:01:29]} Be6 {[%emt 0:02:48]} 31. Rcb3 {[%emt 0:00:51]} d4 {[%emt 0:00:12]} 32. R3b4 {[%emt 0:00:17]} d3 {[%emt 0:00:45]} 33. e4 {[%emt 0:00:11]} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.24"]
[Round "8.4"]
[White "Swicarz, Maciej"]
[Black "Kovalev, Andrei"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2357"]
[BlackElo "2489"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,102,50,38,37,46,50,33,28,28,20,13,0,2,0,13,10,43,57,39,39,54,-5,0,-19,-19,-19,-19,-15,-19,-16,-20,-21,29,-77,-79,-87,-81,-119,-115,-104,-114,-108,-75,-98,-72,-89,-24,-26,-28,-28,-24,-24,-24,-45,-24,-24,-24,-24,-24,-24,-24,-144,-156,-141,-155,-214,-185,-252,-264,-491,-485,-410,-325,-324,-307,-378,-348,-524,-397,-397,-396,-721,-701,-691,-691,-678,-643,-711,-727,-687,-681,-29945,-4129,-4952,-4943]} 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Nf6 5. dxc5 b6 6. Nc3 {A45: Trompowsky Attack} bxc5 7. e4 Nc6 8. Qd2 {White is slightly better.} e5 9. Bg5 Be7 10. h4 $146 ({Predecessor:} 10. Bb5 Nd4 11. Bc4 Rb8 12. b3 h6 13. Be3 d6 {0-1 (59) Fridman,D (2645)-Gashimov,V (2719) Mainz 2010}) 10... Rb8 11. b3 Nd4 12. Bc4 h6 13. Bxf6 $1 Bxf6 14. g3 Qa5 15. Kd1 (15. Kf2 $14) 15... Ba6 $11 16. Nd5 Qxd2+ 17. Kxd2 Bxc4 18. bxc4 Rb2 19. Ne3 O-O $36 {[%mdl 2048] Black has good play.} 20. Kd3 d5 21. c3 (21. exd5 $11 Re8 22. Ke4 (22. c3 $2 Nxf3 23. Nd1 e4+ 24. Ke3 Rg2 $19)) 21... dxe4+ $1 $17 22. fxe4 {[#]} Nc2 $1 {[%cal Rc2a1][%mdl 512]} 23. Rc1 (23. Nxc2 Rd8+) 23... Nxe3 24. Kxe3 Rxa2 25. Nf3 Rb8 26. Ra1 Rc2 27. Rhc1 Rbb2 (27... Rxc1 $17 28. Rxc1 a5) 28. Rxc2 $11 Rxc2 {[%mdl 4096] Endgame KRB-KRN} 29. Ra3 Rg2 30. Ra5 $1 Rxg3 31. Rxc5 g5 32. hxg5 $1 hxg5 {Hoping for ...g4.} 33. Kf2 Rh3 34. Kg2 g4 35. Nh2 (35. Nxe5 $11 Bxe5 36. Rxe5) 35... Bh4 $1 $17 ({Much less strong is} 35... Rxc3 36. Nxg4 Kg7 37. Nxe5 $11) 36. Rxe5 Rxc3 37. Rh5 (37. Rf5 $17) 37... Rc2+ $19 38. Kg1 (38. Kh1 $142 Be1 39. Nxg4) 38... Bf2+ $1 39. Kf1 $2 {[#]} (39. Kg2 {was necessary.}) 39... g3 $1 {Threatens to win with ...Be3.} 40. Rg5+ Kh8 {Played: Kg8-f8} 0-1

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.24"]
[Round "8.5"]
[White "Siddharth, Jagadeesh"]
[Black "Plat, Vojtech"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2301"]
[BlackElo "2589"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,76,29,13,39,36,24,43,25,30,33,31,34,24,22,12,16,0,0,-6,-12,-22,-19,-36,-39,-32,-23,-22,-22,-22,-13,-53,-46,-48,-18,-24,31,25,24,18,20,23,24,19,27,8,8,8,8,8,9,2,14,15,25,0,0,2,18,0,0,0,0,0,0,0,0,0,0]} 1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 exd4 5. Qxd4 Be7 6. Bg5 Be6 {C41: Philidor Defence.} 7. O-O-O Nc6 8. Bb5 O-O {White is slightly better.} 9. Bxc6 bxc6 10. Rhe1 {[#]} Nd7 $146 ({Predecessor:} 10... Qc8 11. e5 dxe5 12. Nxe5 Qb7 13. Qa4 Rab8 14. b3 Bb4 15. Re3 Nd5 16. Nxd5 cxd5 {1-0 (31) Ospina,O-Simancas Maradei,M (2053) Palmira 2018}) 11. Bxe7 Qxe7 12. e5 {[%cal Re5d6]} d5 13. Qa4 c5 14. Qh4 Qxh4 15. Nxh4 d4 16. Ne4 Rfb8 17. f4 a5 18. c3 Bxa2 19. cxd4 Rb4 20. dxc5 Rc4+ 21. Kd2 Rb8 {[%mdl 1024] Black has compensation.} 22. Ke3 Nf8 (22... Nxc5 $11 23. Nxc5 Rxc5) 23. Nf5 $36 {[%mdl 2048] Hoping for Ne7+. Black is under pressure.} Ne6 24. Rd2 a4 25. Ne7+ Kf8 26. Nc6 Ra8 27. Ra1 (27. Red1 {feels hotter.} g6 28. Nd4 Rb4 29. Nc3 Nxd4 30. Nxa2 Nf5+ 31. Kf3) 27... Nxc5 28. Nxc5 Rxc5 29. Rxa2 Rxc6 $11 {[%mdl 4096] Endgame KRR-KRR} 30. g3 Rb6 31. Rd4 Rb3+ 32. Rd3 {[#] aiming for Rxb3.} Rb4 {The position is equal.} 33. Rda3 f6 34. b3 fxe5 35. fxe5 {[%cal Rb3a4]} Ra5 36. bxa4 Rxe5+ 37. Kf3 Ra5 38. Rc3 Rbxa4 {Accuracy: White = 91%, Black = 89%.} 1/2-1/2

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.25"]
[Round "9.2"]
[White "Kovalev, Andrei"]
[Black "Siddharth, Jagadeesh"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "2489"]
[BlackElo "2301"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,47,25,20,47,56,54,58,22,229,225,229,223,468,457,457,459,467,452,777,766,855,831,826,774,890,858,939,889,884,877,814,583,554,509]} 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Bd3 O-O 8. Ne2 Re8 9. Qc2 {B15: Caro-Kann: 3 Nc3: 3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6} h5 (9... h6 10. O-O Qc7 11. Ng3 Nd7 12. Be3 Nf8 13. Rae1 Be6 14. Qd2 Bxg3 15. hxg3 Bxa2 16. c4 b5 17. cxb5 Bd5 18. Rc1 {½-½ (31) Sjugirov,S (2663)-Li,C (2724) Qinhuangdao 2018}) 10. O-O h4 11. Bf4 {White is slightly better.} Rxe2 $2 {[#]} (11... Na6 $11) 12. Qxe2 $18 Bxf4 13. Qe4 g5 $2 (13... Bxh2+ {keeps fighting.} 14. Kxh2 f5) 14. Qh7+ {White is clearly winning.} Kf8 15. Rae1 {[%cal Rh7h8]} Be6 16. g3 Bc7 {[#]} (16... Bd2 $142 17. Re2 (17. gxh4 Bxe1 18. Rxe1 gxh4 $14) 17... Na6 18. Rxd2 Ke7) 17. Bc4 $146 {[%mdl 512]} ({Predecessor:} 17. f4 hxg3 18. hxg3 Qd6 19. Re3 c5 20. f5 Nd7 21. fxe6 fxe6 22. Bg6 {1-0 (22) Jakic,I (2393)-Tica,S (2439) Zadar 2018}) 17... Qd7 (17... Bxc4 18. Qh8#) 18. Re3 b5 19. Bb3 a5 20. Rfe1 Ra6 21. Qh8+ Ke7 22. Bxe6 fxe6 23. Rxe6+ Qxe6 24. Qg7+ {Accuracy: White = 88%, Black = 27%.} 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.25"]
[Round "9.3"]
[White "Baenziger, Fabian"]
[Black "Swicarz, Maciej"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2412"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,91,4,8,4,12,12,8,0,10,10,10,10,10,9,32,29,24,21,16,0,2,-8,0,4,0,-12,0,0,2,0,14,0,0,0,91,93,106,60,233,225,211,192,243,217,264,244,383,381,377,374,379,386,381,381,590,606,531,572,552,499,631,614,655,620,1946,1758,4137,4137,4133,4133,4829,1546]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Qc2 Bd6 7. Bd3 O-O 8. O-O dxc4 9. Bxc4 b5 10. Be2 Bb7 11. e4 e5 12. dxe5 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} Nxe5 13. Nd4 (13. Nh4 g6 14. f4 Neg4 15. e5 Bc5+ 16. Kh1 Nf2+ 17. Rxf2 Bxf2 18. Nf3 Nd5 19. f5 Nxc3 20. bxc3 {0-1 (58) Parligras,M (2629)-Shirov,A (2664) Batumi 2019}) 13... Neg4 14. g3 {The position is equal.} Bxg3 15. hxg3 {[#] Hoping for Nb3.} Qxd4 16. Qd1 Qxd1 17. Rxd1 a6 {[#]} 18. Bf4 $146 {[%mdl 1024] Strongly threatening e5. White has compensation.} ({Predecessor:} 18. f3 Ne5 19. Be3 Rfe8 {1-0 (42) Yilmaz,M (2556)-Esen,B (2562) Denizli 2013}) 18... Rfe8 $1 19. f3 Ne5 20. b4 a5 21. a3 h6 22. Kf2 Bc8 23. Rac1 axb4 24. axb4 Nfd7 25. Rd6 Bb7 26. Be3 {And now f4 would win.} Nb8 27. f4 Ned7 (27... Nc4 $11 28. Bxc4 bxc4) 28. e5 $16 Nf8 29. Ne4 Ra2 $2 (29... Na6 $14) 30. Rd2 $18 Rxd2 31. Bxd2 ({Don't take} 31. Nxd2 $6 Na6 $16) 31... Ne6 (31... Rd8 $142 32. Nd6 Ba8) 32. Be3 Rd8 33. Nd6 Ba8 (33... Bc8 $142 34. Ra1 Rf8) 34. Ra1 Nd7 35. Ra7 Nef8 36. Bd1 {Black must now prevent Bb3.} c5 37. bxc5 {[%cal Bb4c5,Bc5c6][%mdl 32]} Bd5 (37... Ne6 {was necessary.} 38. f5 Nexc5) 38. Bf3 {White is clearly winning.} Bxf3 39. Kxf3 Ng6 40. Nxb5 Ne7 41. Nd4 Kf8 42. c6 Nb6 {[#]} 43. Rxe7 $1 {[%mdl 576] Remove Defender} Kxe7 44. Nf5+ {[%mdl 64] Double Attack, Discovered Attack} Ke6 45. Bxb6 Rc8 46. Ke4 {Accuracy: White = 75%, Black = 44%.} (46. Nxg7+ $142 Kd5 47. Nf5) 1-0

[Event "Marienbad Open GM 2020"]
[Site "Marianske Lazne"]
[Date "2020.01.25"]
[Round "9.4"]
[White "Bracker, Arne"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2243"]
[BlackElo "2491"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2020.01.18"]
[EventType "tourn"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,19,17,0,23,18]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. Be2 Bb7 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4} 10. Nd1 {Predecessor:} b4 $146 11. O-O Qb6 12. Nf2 cxd4 13. Nxd4 Nxd4 14. Bxd4 Bc5 15. c3 Rc8 16. Rfe1 a5 17. Bg4 {1-0 (48) Ponomariov,R (2712)-Wang,H (2717) Huaian 2016} 1/2-1/2

