[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.13"]
[Round "1.1"]
[White "Giri, Anish"]
[Black "Karjakin, Sergey"]
[Result "1/2-1/2"]
[ECO "A15"]
[WhiteElo "2779"]
[BlackElo "2748"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,59,9,12,12,14,12,23,31,28,22,35,34,20,24,24,32,29,25,31,25,24,20,33,19,36,25,49,22,41,20,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-49]} 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. d4 Bb4+ 5. Nd2 O-O 6. Ngf3 b6 7. O-O Bb7 8. b3 {E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+} c5 9. Bb2 Nc6 10. cxd5 {White has an edge.} exd5 11. a3 Bxd2 12. Nxd2 Nxd4 13. Bxd4 cxd4 14. Nf3 {[#]} Qe7 $146 ({Predecessor:} 14... Re8 15. Nxd4 Ne4 {1-0 (49) Matlakov,M (2730)-David,A (2569) Antalya 2017}) 15. Nxd4 Ne4 16. e3 Rac8 17. Qg4 Rc3 18. b4 g6 19. h4 a5 20. Bxe4 (20. Rfd1 {is more complex.} Qe5 21. Bxe4 Qxe4 22. Qg5 Kg7 23. bxa5 h6 24. Qf4) 20... dxe4 21. bxa5 bxa5 {The position is equal.} 22. Rfc1 Rxc1+ 23. Rxc1 Qxa3 24. Rc7 Qa1+ 25. Kh2 h5 26. Qf4 Bc8 27. Nc6 {[#] Hoping for Qh6.} Kg7 $1 28. Qxe4 Bf5 29. Qf4 Rc8 {And now ...Rxc7 would win.} 30. Rxc8 {Accuracy: White = 56%, Black = 72%.} (30. Nd4 $5 {[%cal Rd4f5]} Rxc7 31. Nxf5+ (31. Qxc7 Bg4 $15) 31... gxf5 32. Qxc7 $11) 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.1"]
[White "Giri, Anish"]
[Black "Karjakin, Sergey"]
[Result "1/2-1/2"]
[ECO "A20"]
[WhiteElo "2779"]
[BlackElo "2748"]
[Annotator "TA"]
[PlyCount "165"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,165,11,10,0,0,10,0,0,6,16,7,8,0,0,0,26,18,29,10,19,31,25,18,20,21,24,27,40,18,12,0,21,0,0,0,0,0,0,0,0,0,0,-248,-18,-47,-39,-37,-37,-53,-51,-35,-35,-35,-35,-52,-20,-23,-21,-30,-23,-22,-24,-159,-141,-139,-39,-74,-74,-72,-77,-132,-130,-198,-199,-194,-188,-174,-170,-170,-185,-301,-288,-266,-242,-202,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-80,-80,-8,-8,-8,-80,-62,-62,-62,-63,-62,-62,-57,-79,-79,-75,-76,-118,-118,-118,-8,-14,0,0,0,-62,-63,-72,0,0,0,0,0,-8,-8,-20,-20,-20,-20,-24,-24,-24,-24,-24,-24,-24]} 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. Nf3 Nc6 7. O-O Be7 8. d3 O-O 9. a3 Be6 10. Be3 Nd5 {A29: English Opening: Four Knights Variation with 4 g3} 11. Nxd5 Bxd5 12. Qa4 a6 {The position is equal.} 13. Rac1 Re8 14. Rfe1 {[#]} h6 $146 ({Predecessor:} 14... Bf8 15. Ng5 h6 16. Bxd5 Qxd5 17. Qe4 Qxe4 18. Nxe4 Rac8 19. Bc5 f5 20. Nd2 Bxc5 21. Rxc5 {1-0 (48) Tomashevsky,E (2738)-Kramnik,V (2801) Moscow 2012}) 15. Nd2 Bxg2 16. Kxg2 Qd5+ 17. Qe4 Rad8 18. Rc2 f5 (18... Qe6 {keeps more tension.} 19. Rec1 Rd5 20. Qc4 Red8 21. Qb3 Qc8) 19. Qxd5+ Rxd5 20. Rec1 Bd6 21. Nc4 Kf7 22. f3 h5 23. Bf2 g6 24. Rc3 Be7 25. e4 Rd7 26. Kf1 Bg5 27. R1c2 Red8 28. Ke2 fxe4 29. fxe4 Ke6 30. b4 $2 {[#]} (30. h4 $11 {and White is okay.} Bh6 31. Rb3) 30... Rf7 $2 (30... Nd4+ $1 $19 31. Bxd4 exd4) 31. Nb2 Rdf8 32. Nd1 {[#]} Rxf2+ $1 {[%mdl 512]} 33. Nxf2 Nd4+ {[%mdl 64] Double Attack} 34. Ke1 Nxc2+ 35. Rxc2 $15 {[%mdl 4096] Endgame KRB-KRN} c6 36. Nd1 Ra8 37. Nc3 b5 38. Ne2 Kd6 39. d4 Re8 40. dxe5+ (40. d5 $11 cxd5 41. Nc3) 40... Rxe5 $17 41. Nc3 c5 ({Black should try} 41... Re6 $17 42. Ke2 Ke5) 42. Ke2 c4 43. a4 bxa4 44. h4 ({White should play} 44. Nxa4 Rxe4+ 45. Kf3) 44... Bh6 45. Ra2 (45. Nxa4 $17 {was worth a try.} Rxe4+ 46. Kf3) 45... a5 $19 46. Rxa4 axb4 47. Rxb4 Kc5 48. Rb7 Kd4 49. Nb5+ (49. Nd1 {might work better.}) 49... Kxe4 50. Rb8 Kd5+ 51. Kf2 Kc5 (51... Be3+ $19 {is more deadly.} 52. Kf3 Bd2 53. Rd8+ Kc5) 52. Na3 $17 c3 {Threatens to win with ...Rd5.} 53. Rc8+ {[#]} Kb4 $1 {[%cal Rb4b3]} 54. Nc2+ Kb3 55. Nd4+ Kb2 {And now ...Be3+ would win.} 56. Rb8+ Kc1 {Hoping for ...Be3+.} 57. Ne2+ Kc2 {Strongly threatening ...Be3+.} 58. Rc8 Bd2 59. Rc6 g5 60. hxg5 Rxg5 61. Kf3 Kb2 (61... Re5 $17 {...Re3+ is the strong threat.} 62. Rc7 Re3+ 63. Kf2 Re8 64. Nxc3 Rf8+ 65. Kg2 Bxc3) 62. Rb6+ $11 Ka3 {Black wants to play ...Rc5.} (62... Ka2 {seems wilder.} 63. Ke4 c2 64. Rc6 Kb2 65. Rb6+ Ka3) 63. Nd4 (63. Ke4 $11 {remains equal.}) 63... Re5 64. Nc2+ Ka4 65. Rb4+ Ka5 66. Rh4 Rf5+ 67. Ke4 Rg5 68. Kf3 Kb5 69. g4 hxg4+ 70. Rxg4 Rh5 (70... Rxg4 $17 71. Kxg4 Bh6) 71. Ke2 Rh2+ 72. Kd3 Rh3+ 73. Ke2 (73. Kd4 $11) 73... Kc5 $15 74. Nb4 Kd6 (74... Be3 $17) 75. Kd1 $11 Rh2 76. Rc4 Ke5 77. Kc2 Rg2 78. Rxc3 (78. Kb3 {is interesting.} Rg8 79. Rc5+ Kd6 80. Rc6+ Kd7 81. Rc4) 78... Bxc3+ 79. Kxc3 Ke4 80. Nc2 Rg3+ {Black has an edge.} 81. Kc4 Rg8 82. Nb4 Rc8+ 83. Kb5 {Accuracy: White = 49%, Black = 55%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.1"]
[White "Giri, Anish"]
[Black "Karjakin, Sergey"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2779"]
[BlackElo "2748"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,101,31,31,31,35,31,30,30,37,30,42,30,25,27,29,35,36,25,21,28,0,0,0,0,0,0,0,0,1,27,34,42,32,37,27,35,33,75,72,60,76,100,114,60,6,235,211,418,439,421,433,436,427,443,455,439,437,607,598,580,572,582,582,711,684,710,713,681,617,585,543,393,205,863,714,724,683,752,725,744,734,837,825,1026,1027,4727,4670,1923,1722]} 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 c5 8. Nc3 Qc7 {A13: English Opening: 1...e6} 9. O-O $146 ({Predecessor:} 9. d4 b6 10. Bf4 Bd6 11. Bxd6 Qxd6 12. O-O {½-½ (30) Adams,M (2715)-Karjakin,S (2760) London 2017}) 9... b6 10. d4 Bb7 {White has an edge.} 11. Bf4 Bd6 12. Bxd6 Qxd6 13. Rfd1 O-O 14. e4 {Hoping for e5.} cxd4 15. Nxd4 {And now e5! would win.} Qc7 16. Rac1 Rad8 17. f4 {e5 is the strong threat.} e5 $1 {[%cal Re5d4]} 18. Nd5 Qxc2 19. Nxc2 exf4 20. gxf4 Nc5 21. Nce3 Bxd5 22. exd5 Rfe8 23. Nc4 Ncd7 24. Bf3 Ne4 25. d6 f5 26. b4 Re6 27. a4 Kf8 {[#]} 28. a5 $1 b5 (28... bxa5 $16 29. Nxa5 Nxd6) 29. Nb6 (29. Ne5 $14) 29... Ndf6 $2 (29... Nxd6 $11 {and Black stays safe.} 30. Rc7 Rg6+ 31. Kf1 Nf6) 30. d7 $18 g5 $2 (30... Rd6 {is a better defense.} 31. Rxd6 Nxd6) 31. fxg5 Nxg5 32. Bb7 Ke7 33. Bxa6 Re2 34. Bb7 Nfe4 35. Rd3 Rg8 {[#]} 36. d8=Q+ $1 {[%mdl 512]} Rxd8 37. Rc7+ Kf6 38. Bxe4 Rg8 39. Nd7+ Ke7 40. Nc5+ Kf6 41. Rc6+ Ke5 42. Rd5+ Kf4 {( -> ...Nh3+!)} 43. Kf1 (43. Rxf5+ $142 Ke3 44. Kf1 (44. Bg2 {gets mated.} Re1+ 45. Rf1 Nh3+ 46. Kh1 Rxf1+ {[%mdl 64] Back Rank} 47. Bxf1 Rg1#)) 43... Ra2 $2 (43... Nxe4 44. Rxf5+ (44. Kxe2 Nc3+ 45. Kf2 Nxd5 $14) 44... Kxf5 45. Kxe2 Nc3+ 46. Kf3 Nd5) 44. Bc2 {White is clearly winning.} Rxc2 {[#]} 45. Ne6+ $1 {[%mdl 64] Discovered Attack} Nxe6 46. Rxc2 {KRR-KRN} Ke4 47. Rxb5 Nd4 48. Rc4 f4 49. a6 {[%cal Ba5a6,Ba6a7][%mdl 32]} Kd3 {[#]} 50. Rxd4+ $1 Kxd4 51. a7 {Accuracy: White = 79%, Black = 48%.} 1-0

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.12"]
[Round "1.1"]
[White "Karjakin, Sergey"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2748"]
[BlackElo "2779"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,31,0,4,0,10,4,12,0,0,0,12,0,7,0,12,0,6,3,6,7,18,3]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. O-O Nd4 6. Nxd4 Bxd4 {The position is equal.} 7. Ba4 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5} O-O 8. c3 Bb6 9. Bg5 h6 10. Bh4 d6 (10... g5 $5 11. Bg3 $8 d6 $11) 11. Nd2 Bg4 $146 (11... g5 $5 12. Bg3 $8 Bg4 $11) ({Predecessor:} 11... g5 12. Bg3 Bg4 13. Qe1 Nh5 14. Bd1 Bxd1 15. Qxd1 Nxg3 16. hxg3 {½-½ (47) Caruana,F (2828)-Robson,R (2667) chess.com INT 2019}) 12. Qe1 Be6 (12... g5 $5 {[%cal Rg5h4]} 13. Bg3 Be6 $11) 13. Bb3 Bxb3 14. axb3 Qe7 (14... g5 $5 15. Bg3 $8 Nd7 $11) 15. Nc4 Qe6 16. Bxf6 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.1"]
[White "Karjakin, Sergey"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2748"]
[BlackElo "2779"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,57,25,24,21,18,14,15,27,10,12,12,14,9,9,5,14,16,12,13,22,20,15,14,9,8,0,0,0,-10,-15,-25,-19,-24,0,0,0,-6,0,0,4,4]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Bf6 10. Re1 Re8 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4} 11. c3 Rxe1 12. Qxe1 Nf5 13. a4 $146 ({Predecessor:} 13. Bf4 d6 14. Nd2 Be6 15. Ne4 Be7 16. Qd2 c6 17. Bd3 Qd7 18. Ng5 Bxg5 19. Bxg5 h6 20. Bf4 g5 21. Bxf5 Bxf5 22. Bg3 d5 23. Re1 {½-½ (23) Nepomniachtchi,I (2763)-Radjabov,T (2757) Wijk aan Zee 2019}) 13... d5 14. a5 c6 15. Nd2 {[%cal Bb1d2,Bd2b3,Bb3c5][%mdl 32]} Nd6 16. Nb3 Bf5 17. Bf4 Rc8 18. Nc5 b6 19. axb6 axb6 20. Nd3 h6 21. Be5 Be7 22. b3 Bf8 23. Bf4 c5 24. dxc5 bxc5 25. h3 c4 26. bxc4 {The position is equal.} Nxc4 27. Ne5 Nxe5 28. Bxe5 Ra8 29. Rxa8 {Accuracy: White = 71%, Black = 71%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.1"]
[White "Karjakin, Sergey"]
[Black "Giri, Anish"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2748"]
[BlackElo "2779"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,91,0,14,6,11,23,20,20,15,5,25,31,22,32,32,0,7,2,72,68,66,76,76,61,187,187,166,184,188,190,192,181,176,177,223,143,131,159,127,14,131,129,131,129,122,122,122,122,114,81,71,63,114,114,158,143,264,154,149,148,170,149,173,159,185,189,385,375,362,216,502,481,633,629,621,616,604,431]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 e5 7. Nde2 Be7 8. O-O O-O 9. Ng3 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} Bg4 (9... Be6 10. Nd5 Bxd5 11. exd5 g6 12. c4 Nbd7 13. Bh6 Re8 14. Rc1 Bf8 15. Bg5 h6 16. Bd2 a5 {1-0 (43) Anand,V (2774)-Keymer,V (2516) Karlsruhe/Baden Baden 2019}) 10. Be2 $146 ({Predecessor:} 10. Qe1 Nbd7 11. h3 Be6 12. Be3 b5 13. a3 Qc7 14. Rd1 Nb6 15. b3 {0-1 (40) Mikus,T (1928)-Sabik,R (1942) Slovakia 2013}) 10... Be6 11. Be3 {The position is equal.} g6 12. a4 Nbd7 13. Qd2 Rc8 14. a5 Re8 15. Nd5 Bxd5 $1 16. exd5 Nc5 (16... h5 $11 {keeps the balance.}) 17. f3 $16 h5 18. b4 Ncd7 19. c4 h4 (19... Nh7 $14) 20. Ne4 $18 h3 21. g3 Nxe4 22. fxe4 Nf6 23. Qd3 Qd7 24. Rac1 Ng4 25. Bb6 Bg5 26. Rc3 Rf8 27. c5 ({Better is} 27. Qb1 $16) 27... dxc5 (27... Be3+ $11 {remains equal.} 28. Kh1 Nf2+ 29. Rxf2 Bxf2) 28. Bxc5 $16 Rxc5 29. bxc5 {Black must now prevent Kh1.} (29. Rxc5 $6 Be3+ 30. Kh1 Nf2+ 31. Rxf2 Bxf2 $11) 29... Be3+ 30. Kh1 Nf2+ 31. Rxf2 $1 Bxf2 32. c6 bxc6 33. dxc6 Qc7 (33... Qxd3 $14 34. Rxd3 (34. Bxd3 Be1 $11) 34... Rc8) 34. Rc1 $36 {[%mdl 2048] Black is under strong pressure.} Bd4 35. Qxa6 Rb8 {[#]} (35... Be3 $16 36. Rb1 Rc8) 36. Bg4 (36. Qc4 $1 $18) 36... Bc3 37. Bxh3 Bxa5 38. Bd7 Kg7 39. Rf1 Rf8 40. Rb1 Qd8 $2 (40... Rd8 {might work better.} 41. Be6 (41. Rb7 Qd6 $18) 41... Rd6) 41. Kg2 Bc7 42. Rb7 Bd6 $2 (42... Qg5 43. Qe2 (43. Rxc7 Qd2+ 44. Kf3 Qc3+ 45. Kg4 Qd2 $18) 43... Qd8) 43. Qd3 $18 {White is clearly winning.} Bb8 44. Qd5 Bc7 45. h4 Rh8 {[#]} 46. Be6 $1 {[%mdl 512] Accuracy: White = 71%, Black = 32%.} 1-0

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.2"]
[White "So, Wesley"]
[Black "Harikrishna, Pentala"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2763"]
[BlackElo "2734"]
[Annotator "TA"]
[PlyCount "177"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,177,20,18,4,5,5,0,13,14,11,6,0,34,26,95,95,100,105,108,125,196,217,183,197,222,0,0,0,237,211,221,219,191,195,165,174,175,141,171,204,147,147,163,0,0,0,0,0,0,-12,0,0,92,0,0,0,10,-30,0,0,82,0,0,-29,25,28,25,33,50,50,50,50,50,50,50,30,30,30,44,46,30,23,34,23,50,50,50,50,50,50,54,30,30,30,30,30,30,30,30,30,76,76,83,30,30,30,30,0,30,30,30,30,30,0,80,80,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,272,271,294,291,277,277,276,247,303,303,415,408,516,516,514,502,422,295,784,784,777,762,29979,29980]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O a6 7. Re1 Ba7 8. Bb3 h6 9. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} O-O 10. h3 Re8 11. Nf1 Be6 12. Bc2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} (12. Be3 Bxe3 13. Nxe3 Bxb3 14. Qxb3 Qd7 15. Nd5 Nxd5 16. Qxd5 Qe6 17. Qxe6 fxe6 18. b4 Kf7 19. a4 Ke7 20. Nd2 Kd7 21. f3 Rf8 {½-½ (21) Vocaturo,D (2630)-Laznicka,V (2668) Germany 2019}) 12... d5 13. Qe2 b5 14. Rd1 {The position is equal.} Qe7 15. Ng3 {[#]} Rad8 $146 ({Predecessor:} 15... d4 16. Bb3 Nd7 17. Bxe6 fxe6 18. Bd2 Rf8 {½-½ (18) Abrahamyan,T (2377)-Ringoir,T (2516) Burlingame 2019}) 16. exd5 Nxd5 17. Qe4 $1 Nf6 (17... Rd6 $11) 18. Qxc6 $16 Bb6 19. d4 e4 20. Ne5 (20. Nxe4 $6 Bd5 $11) 20... Rd6 (20... Bd5 $16) 21. Qb7 $18 (21. Nxe4 Rxc6 22. Nxc6 Qd7 $11) 21... Bc8 22. Qa8 Bd7 23. Qb7 $2 (23. Qxa6 $18 Bxd4 24. Qxd6 {[%mdl 64] Remove Defender} cxd6 25. Nxd7 Bxf2+ 26. Kxf2 e3+ 27. Kg1 Qxd7 28. a4) 23... Bc8 $11 24. Qa8 $2 (24. Qb8 $11 Be6 25. Qb7 {[%mdl 64] Double Attack} Bc8) 24... Bd7 $1 $18 25. Qxa6 ({But not} 25. Qb7 $6 Bc8 $16) 25... Bxd4 26. Qxd6 $1 {[%mdl 64] Double Attack} Bxf2+ 27. Kxf2 cxd6 28. Nxd7 e3+ 29. Kg1 {And now Nxf6+ would win.} Qxd7 30. Re1 Qa7 31. Nf5 {[%cal Rc1e3]} Nd5 32. Bb3 $2 ({Resist} 32. Nxd6 Nf4 $16) (32. Kh2 $18) 32... e2+ $11 33. Nd4 {[%mdl 64] [#] Double Attack} Nb4 $1 {[%mdl 512]} 34. Bf4 (34. cxb4 Qxd4+) 34... Nd3 35. Bg3 Qc5 36. Kh2 Qh5 (36... Nxe1 $11 37. Rxe1 h5) 37. Bc2 (37. a4 $1 $16) 37... Nxe1 38. Rxe1 b4 39. Bf5 bxc3 40. bxc3 Re3 {[#]} (40... Qg5 $11 {remains equal.}) 41. Bg4 ({White should play} 41. Bf2 $1 $16 {[%cal Rf2e3]} Re8 42. h4 (42. g4 Qg5 $11)) 41... Qa5 42. Rxe2 Rxg3 (42... Qxc3 $142 43. Nb5 Qd3 44. Rxe3 Qxe3) 43. Kxg3 Qxc3+ 44. Nf3 d5 45. Bf5 {[%cal Re2e8]} g6 {Threatens to win with ...Qc7+.} 46. Bc2 Qc7+ 47. Kf2 {Bb3 is the strong threat.} Qa7+ 48. Kf1 {Hoping for Bb3.} Qxa2 49. Rd2 Qa6+ 50. Bd3 Qa1+ 51. Ke2 Kg7 52. Rd1 Qb2+ 53. Kf1 Qb3 54. Be2 h5 55. Nd4 Qa4 56. h4 Kf6 57. g3 Kg7 58. Rd3 Qa1+ 59. Kg2 Qb2 60. Kf2 Qb6 61. Bf3 Qc5 62. Kg2 (62. Rd1 $16) 62... Qc4 63. Rd2 Qb4 $1 {[%cal Rb4d2]} 64. Rd3 Qc4 65. Be2 Qa2 66. Kf2 Qa7 67. Bf3 Qc5 68. Rd1 Qa5 {[#]} 69. Ne2 $1 Qb6+ 70. Kg2 Qb2 71. Rxd5 Qc2 72. Rd7 Qb2 73. Rc7 Qa2 74. Rb7 Qc2 75. Re7 Kf8 76. Re4 Kg7 77. Kh2 Qb2 $2 (77... Qd2 $16 78. Kh3 Qd7+ 79. Kg2 Qd2) 78. Bg2 $18 Qd2 79. Nf4 Kf8 80. Ra4 Qc2 81. Ra7 Ke8 82. Ra8+ Ke7 83. Nd5+ Kd6 84. Ra7 Qf2 85. Ra6+ Ke5 86. Nf4 {Nd3+ would kill now.} Kf5 $2 (86... Qd4 87. Nh3 Qc4) 87. Nh3 Qd2 88. Ng5 f6 {[#]} 89. Rxf6+ $1 {[%mdl 512] Accuracy: White = 69%, Black = 43%.} 1-0

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.12"]
[Round "1.2"]
[White "So, Wesley"]
[Black "Harikrishna, Pentala"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2763"]
[BlackElo "2734"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,90,12,26,18,20,22,26,11,26,12,22,20,21,24,16,9,11,8,12,16,18,16,25,13,24,18,17,9,16,10,6,0,0,0,0,-21,-35,-18,-20,-37,-38,-18,0,0,78,73,70,71,133,131,139,139,340,316,345,344,344,331,288,328,340,291,323,299,237,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O a6 7. Re1 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} (7. a4 h6 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 Ba7 11. Ng3 Be6 12. Bxe6 Rxe6 13. b4 d5 14. Qb3 Qd7 15. h3 Rd8 {0-1 (76) Yu,Y (2751)-Harikrishna,P (2723) Shenzhen 2019}) 7... Ba7 8. a4 O-O 9. h3 {White has an edge.} h6 10. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3,Be3d5][%mdl 32]} Re8 11. b4 $146 ({Predecessor:} 11. Nf1 Be6 12. Bxe6 Rxe6 13. Be3 Bxe3 14. Nxe3 Qd7 {0-1 (40) Kravtsiv,M (2641)-Parligras,M (2645) Hungary 2019}) 11... Be6 12. Bxe6 Rxe6 13. Qc2 Qd7 14. Nf1 d5 15. Be3 Bxe3 16. Nxe3 Rd8 17. b5 Ne7 18. c4 d4 19. Nd5 Ng6 {[%cal Rf6d5]} 20. Rab1 axb5 21. Rxb5 c6 22. Nb6 $1 $36 {[%cal Rb6d7][%mdl 2048] Black is under pressure.} Qe7 23. Rbb1 Nh5 {And now ...Nh4 would win.} 24. g3 Rf6 25. Qd1 Ngf4 26. gxf4 Nxf4 27. Kh2 $1 Rg6 (27... Qe6 $11 {remains equal.} 28. Ng1 Rg6) 28. Rg1 $16 Rxg1 29. Nxg1 Rd6 (29... Qa3 $142) 30. Nc8 Qh4 31. Qf3 Rg6 $2 (31... Rd8 $16) 32. Rxb7 $18 Rg2+ 33. Qxg2 $1 Nxg2 34. Kxg2 Qg5+ 35. Kh1 Qd2 36. a5 Qxa5 37. Ne7+ Kh7 {[#]} 38. Nxc6 $2 ({Only move:} 38. Nf5 $1 $18) 38... Qa6 $11 {The position is equal.} 39. Nd8 Qa3 40. Nxf7 Qxd3 41. Nd6 Qc2 $1 {Threatens to win with ...d3.} 42. Rd7 Qa4 (42... d3 $5 43. Nf5 $8 Qxc4 $11) 43. Re7 d3 44. Nf3 $1 d2 {[%mdl 64] [#] Decoy} 45. Nxd2 Qd1+ {Accuracy: White = 69%, Black = 70%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.2"]
[White "Aronian, Levon"]
[Black "Yu, Yangyi"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2756"]
[BlackElo "2736"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,118,18,32,21,28,28,33,22,22,25,25,15,39,41,4,21,60,9,17,-14,-26,0,0,-29,-14,-34,-16,-31,-29,-39,-30,-33,-33,-33,-22,-41,0,0,5,0,8,8,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,64,64,64,64,64,64,64,64,55,55,55,55,55,55,55,64,64,86,0,55,55,55,55,86,86,86,0,64,0,64,0,64,0,0,0,0,0,0,0,0,-29975,0]} 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. d4 g6 5. Nc3 Bg7 6. Be2 O-O 7. O-O dxc4 8. Bxc4 Bg4 9. Be2 Nbd7 10. e4 {D94: Grünfeld: 4 Nf3 Bg7 5 e3} Bxf3 11. Bxf3 e5 12. d5 {White is slightly better.} (12. dxe5 Nxe5 13. Be2 Qe7 14. Qc2 Rfd8 15. h3 c5 16. Bg5 Nc6 17. Rae1 h6 {½-½ (28) Cheparinov,I (2703)-Mamedov,R (2680) Kocaeli 2017}) 12... cxd5 13. exd5 Re8 {[#]} 14. Bg5 $146 ({Predecessor:} 14. Re1 Nc5 15. Be3 Rc8 16. Rc1 e4 17. Be2 a6 {½-½ (56) Kazhgaleyev,M (2576)-Kuderinov,K (2465) Dushanbe 2013}) 14... h6 15. Be3 e4 16. Be2 Nb6 {[%cal Rf6d5]} 17. Qb3 (17. d6 $1 $14) 17... Nfxd5 $11 18. Rad1 {[%cal Rc3d5] [#]} Nxc3 $1 {[%mdl 512]} 19. bxc3 Qc7 20. Bb5 Red8 21. c4 Nd7 22. Bxd7 Rxd7 23. Bf4 Qc6 24. Rxd7 Qxd7 25. Rd1 Qg4 26. Be3 Rc8 27. h3 Qe6 28. Qxb7 Qxc4 29. Qxa7 Qe2 30. Rb1 Qd3 31. Re1 Qd5 32. Qa4 Ra8 33. Qb3 Qxb3 34. axb3 {[%mdl 4096] Endgame KRB-KRB} Rb8 35. Rb1 f5 36. Kf1 Kf7 37. b4 Rb5 38. Bc5 f4 (38... Be5 $11) 39. Re1 $14 e3 $1 40. fxe3 Bc3 41. Rb1 ({Much worse is} 41. exf4 Bxe1 42. Kxe1 Ke6 $15) 41... fxe3 $1 42. Ke2 Bd2 $1 43. Kd3 Ke6 44. Bxe3 Rxb4 45. Rxb4 Bxb4 46. Bxh6 {KB-KB} Kf7 47. Ke4 Be7 48. Kd5 (48. Be3 $16) 48... Bf6 (48... g5 $11) 49. Bf4 Be7 50. Be5 Bf8 51. Ke4 Be7 52. h4 (52. Bd4 $16) 52... Bd8 (52... Bxh4 $11 53. Kd5 Bf6) 53. Bd6 (53. g3 $14) 53... Ke6 (53... Bxh4 $11 54. Bf4 Kf6) 54. Bc5 ({White must play} 54. Bg3 $14) 54... Bc7 ({Better is} 54... Bxh4 $11 55. Be3 Be7) 55. Kd4 (55. Kf3 $14) 55... Bg3 $11 56. h5 gxh5 57. Bf8 Kf7 58. Bh6 Kg6 59. Ke4 $2 {[%mdl 8192] [#]} (59. Be3 $11) 59... Bh4 $2 {Accuracy: White = 64%, Black = 48%.} (59... Kxh6 {mates} 60. Kf5 h4 61. Kg4 Kg6 62. Kh3 Kf7 63. Kg4 Kg6 64. Kh3 Kf6 65. Kg4 Ke6 66. Kf3 Kf5 67. Ke2 Kf4 68. Kf1 Bh2 69. Ke2 Bg1 70. Kf1 Bc5 71. Ke1 Kg3 72. Kd2 Kxg2 73. Kd3 h3 74. Kc3 h2 75. Kc4 Bf2 76. Kd5 h1=Q 77. Ke5 Qd1 78. Ke6 Qd8 79. Ke5 Bd4+ 80. Kf5 Qd5+ 81. Kf4 Bc3 82. Kg4 Bf6 83. Kf4 Qf3#) 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.2"]
[White "Aronian, Levon"]
[Black "Yu, Yangyi"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2756"]
[BlackElo "2736"]
[Annotator "TA RC"]
[PlyCount "126"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,126,37,42,25,23,21,31,23,33,17,32,0,16,-17,-5,-34,0,0,0,0,10,-27,8,10,27,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,9,6,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,33,0,0,0,0,0,0,0,18,0,0,0,26,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. d4 g6 5. Nc3 Bg7 6. Be2 O-O 7. O-O a6 8. h3 {D94: Grünfeld: 4 Nf3 Bg7 5 e3} (8. Bd2 Bg4 9. Qb3 Ra7 10. Rfd1 e6 11. h3 Bxf3 12. Bxf3 Nbd7 13. Ne2 Re8 14. Be1 a5 15. Qc2 Nb6 16. b3 {½-½ (41) Aronian,L (2767)-Artemiev,V (2709) Caleta 2019}) 8... e6 9. b3 Nbd7 10. Ba3 $146 {White is slightly better.} ({Predecessor:} 10. Qc2 Re8 11. Bb2 b6 12. b4 dxc4 13. Bxc4 Bb7 14. Be2 c5 15. dxc5 bxc5 {1-0 (53) Zhou,J (2652)-Li,S (2514) Xinghua 2010}) 10... Re8 $1 11. Rc1 b6 12. Nd2 Bb7 13. Bf3 e5 14. Re1 e4 15. Be2 Nf8 16. Bb2 Ne6 17. a4 h5 18. b4 Rc8 19. b5 axb5 $1 20. axb5 c5 21. dxc5 Nxc5 22. Na4 Nfd7 23. Bxg7 Kxg7 24. Nxc5 Nxc5 25. Nb3 dxc4 26. Nxc5 Rxc5 27. Rxc4 Rxc4 28. Bxc4 Qf6 29. Qd7 Re7 $1 {[%cal Re7d7]} 30. Qd8 Re5 31. Rd1 Qxd8 32. Rxd8 $11 {[%mdl 4096] Endgame KRB-KRB} Rc5 33. Rd7 Rxc4 34. Rxb7 {KR-KR} Rc1+ 35. Kh2 Rc2 36. Kg3 h4+ 37. Kxh4 {[#] Strongly threatening Kg3.} Rxf2 38. Kg3 Rf6 39. h4 Kh7 40. Kh2 Kg7 41. Kh3 Kg8 42. Kh2 Kg7 43. Kg3 Kh7 44. Kh3 Kg7 45. Kh2 Kg8 46. Kg1 Kg7 47. Kh1 Kg8 48. Kh2 Kf8 {The position is equal.} 49. Kh3 Kg7 50. g3 Rf3 51. Rxb6 Rxe3 52. Rc6 Rb3 53. b6 f5 54. h5 gxh5 {[#] Threatens to win with ...f4.} 55. Kh4 e3 56. Kg5 Kf7 57. Kxf5 Rb5+ 58. Kf4 e2 59. Rc1 Rxb6 60. Re1 Re6 61. Kf3 Kf6 62. Rxe2 Rxe2 63. Kxe2 Kg5 {Accuracy: White = 61%, Black = 70%.} 1-0

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.2"]
[White "Yu, Yangyi"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2736"]
[BlackElo "2756"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,89,26,28,0,0,4,53,52,60,57,60,30,41,26,25,27,12,16,20,12,32,24,16,0,16,7,9,10,44,44,44,44,76,76,76,76,76,76,73,52,52,59,52,37,80,37,37,37,145,145,257,85,85,8,8,4,4,4,4,4,5,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O dxc4 7. Ne5 Nc6 8. Bxc6 bxc6 9. Nxc6 Qe8 10. Nxe7+ Qxe7 11. Nc3 {E05: Open Catalan: 5 Nf3 Be7} (11. Qa4 e5 12. dxe5 Qxe5 13. Re1 Be6 14. Nc3 Ne4 15. Qc2 Nxc3 16. Qxc3 Qxc3 17. bxc3 Rab8 18. f3 Rfd8 19. Bf4 Rb2 {½-½ (32) Nakamura,H (2746)-So,W (2762) Saint Louis 2019}) 11... Rd8 12. Qa4 a5 13. Qxc4 {White is slightly better.} Ba6 14. Qc6 $146 ({Predecessor:} 14. Qc5 Qxc5 15. dxc5 Rab8 16. b3 Nd5 17. Bb2 {½-½ (17) Gloor,C (2101)-Noseda,F (1927) Sao Paulo 2017}) 14... Qb4 15. Bg5 Bb7 16. Qb5 Rxd4 17. a3 Qxb5 18. Nxb5 Rd7 19. Rfd1 Rad8 20. Rxd7 Rxd7 21. Rc1 Ba6 22. Nxc7 Bxe2 23. Nd5 {[#] White threatens Rc8+ and mate.} h5 (23... Ne8 {seems wilder.} 24. Nb6 Rd6 25. Be3 f6 26. Kg2 Rd1) 24. Nxf6+ gxf6 25. Bxf6 Rd1+ 26. Rxd1 Bxd1 $16 {[%mdl 4096] Endgame KB-KB} 27. b4 axb4 28. axb4 Ba4 29. f3 Kh7 $1 30. Kf2 Kg6 31. Bd8 Kf5 32. Ke3 e5 33. h3 Bc6 (33... Ke6 $14) 34. g4+ Kg6 (34... hxg4 $16 {might work better.} 35. fxg4+ Ke6) 35. h4 $2 {[#]} (35. gxh5+ $18 {and the rest is easy.} Kxh5 36. Bf6) 35... f5 36. gxh5+ (36. Bc7 $16) 36... Kxh5 $11 {The position is equal.} 37. Bf6 f4+ 38. Kf2 e4 39. fxe4 Bxe4 40. b5 Kg4 41. b6 Bb7 42. Bg5 f3 43. Bd8 Bc6 44. Be7 Bb7 45. Bd8 {Accuracy: White = 37%, Black = 56%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.2"]
[White "Yu, Yangyi"]
[Black "Aronian, Levon"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "2736"]
[BlackElo "2756"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,87,0,11,-4,8,2,-1,-56,0,-7,0,-8,2,-9,-24,-14,-10,-13,-2,-27,-27,-27,0,0,0,0,0,0,0,0,0,0,0,-6,0,-20,0,0,0,0,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,92,0,0,0,2,0,0,0,430,442,1204,1158,1123,1106,889,878,1552,1298,29996,29997]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 d5 6. e5 Ne4 $1 7. a3 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0} (7. Nf3 {with more complications.} c5 8. Bd3 cxd4 9. Nxd4 Nd7 10. Bf4) (7. Bd3 c5 8. Nf3 cxd4 9. Nxd4 Nd7 10. Bf4 Qh4 11. g3 Qh5 12. h4 Nxe5 13. Be2 Ng4 14. Bxg4 Qxg4 15. f3 Qh5 {1-0 (36) Vallejo Pons,F (2707)-So,W (2780) Leon 2018}) (7. Bd3 c5 8. Nf3 cxd4 9. Nxd4 Nd7 10. Bf4 Qh4 11. g3 Qh5 12. cxd5 exd5 13. f3 Bxc3+ 14. bxc3 Nec5 15. g4 Qh4+ {½-½ (60) Yu,Y (2738)-Aronian,L (2752) Stavanger 2019}) 7... Bxc3+ $1 8. bxc3 {With the idea Nh3.} c5 $1 9. Bb2 ({White should try} 9. Bd3 $11) 9... Nc6 10. Bd3 f5 11. Ne2 $146 ({Predecessor:} 11. Nf3 b6 12. O-O Ba6 13. cxd5 Bxd3 14. Qxd3 exd5 15. dxc5 Nxc5 {0-1 (34) Gaprindashvili,V (2390)-Agopov,M (2409) Batumi 1999}) 11... dxc4 12. Bxe4 fxe4 13. O-O b5 14. Qxe4 Bb7 {Black wants to play ...Nxd4.} 15. Qg4 Qd5 16. f3 (16. Nf4 Rxf4 $1 {[%mdl 512]} 17. Qxf4 Nxd4 $1 $17 {[%mdl 512]}) 16... a5 17. Nf4 Rxf4 $1 18. Qxf4 cxd4 19. cxd4 b4 20. axb4 axb4 {...c3 is the strong threat.} 21. Rxa8+ Bxa8 22. Rc1 Bb7 {next ...c3 is good for Black.} 23. Kf2 c3 24. Bxc3 $1 bxc3 25. Rxc3 h6 ({Don't blunder} 25... Nxd4 $2 26. Rd3 $18) 26. h4 Ba6 27. Ra3 Qb5 {And now ...Qb2+ would win.} 28. Kg3 Ne7 29. Kh2 Qb6 30. h5 Bb7 31. Rd3 Bd5 32. Rc3 Nf5 33. Rc8+ Kh7 34. Qg4 {[%csl Gh5][%cal Rg4g6]} Ne7 {[#]} (34... g5 $1 $11 35. hxg6+ Kg7) 35. Re8 ({White should play} 35. Rf8 $1 $16 {[%cal Rf8f7] Strongly threatening Rf7!} Qb5 36. Qh4) 35... Qc7 $11 36. Rf8 {White threatens Rf7! and mate.} Qc1 37. Re8 $40 {[%mdl 128] White is up to no good.} Qc7 38. Qg3 Bb3 $2 {[%mdl 8192] [#]} (38... g5 $11 {and Black is okay.}) 39. Rf8 $1 $18 {[%cal Rf8f7] Intending Rf7! and mate.} Qc1 {[#]} (39... Qb6 $142 40. d5 Bxd5) 40. Rf7 $1 {[%csl Gf7,LRe7,LRg7][%cal Rg3g7]} Nf5 41. Qg6+ Kg8 42. Rb7 {Threatening mate with Rb8+.} Qf4+ 43. g3 {[%cal Rb7b8]} Qd2+ 44. Kh3 {Accuracy: White = 62%, Black = 43%.} 1-0

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.13"]
[Round "1.2"]
[White "Harikrishna, Pentala"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2734"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,57,14,22,14,0,12,11,21,20,29,25,26,25,31,25,33,31,36,33,27,10,12,14,14,15,18,6,14,11,3,0,41,33,39,35,27,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bf4 Bd6 {E05: Open Catalan: 5 Nf3 Be7} 11. Qc1 Nbd7 12. Nc3 Qe7 13. Re1 {[#]} Bxf4 $146 ({Predecessor:} 13... Bxf3 14. Bxf3 Bxf4 15. Qxf4 c6 16. a5 e5 17. Qe3 Rfe8 18. d5 {½-½ (35) Ding,L (2777)-Leko,P (2691) Riadh 2017}) 14. Qxf4 Bxf3 15. Qxf3 c6 16. a5 Rfe8 17. Red1 e5 18. d5 e4 19. Qf5 g6 20. Qf4 cxd5 21. Nxd5 Nxd5 22. Rxd5 Nf6 23. Rd6 Kg7 24. Rad1 Rad8 (24... Rac8 {keeps more tension.} 25. Qd2 Qe5 26. e3 Re7 27. Bh3 Rc5) 25. Rxd8 Rxd8 26. Rxd8 Qxd8 27. Bxe4 Nxe4 28. Qxe4 Qxa5 {Threatening ...Qa1+.} 29. Qxb7 {Accuracy: White = 74%, Black = 60%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.2"]
[White "Harikrishna, Pentala"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2734"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,82,34,12,25,19,21,20,14,14,14,17,11,17,20,23,17,14,10,13,23,2,14,14,20,29,25,7,5,8,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-18,0,-22,-23,-23,-23,-35,-35,-38,-12,-13,-20,-20,0,-24,0,-22,0,-31,0]} 1. d4 Nf6 2. c4 e6 3. g3 $146 ({Predecessor:} 3. Nf3 d5 4. g3 Be7 {½-½ (58) Postny,E (2621)-Tomashevsky,E (2702) Biograd 2018}) 3... d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O dxc4 7. Qc2 b6 {E05: Open Catalan: 5 Nf3 Be7} 8. Bg5 Nd5 9. Bxe7 Qxe7 {The position is equal.} 10. Ne5 Bb7 11. Qxc4 c5 12. Nc3 Nxc3 13. Qxc3 cxd4 14. Qxd4 Bxg2 15. Kxg2 Qb7+ 16. Kg1 Nc6 17. Qe4 Rfc8 18. Rfd1 {[#] And now Rd7 would win.} Rc7 $1 19. Nf3 h6 20. Rac1 Rd8 21. Ne5 {[%cal Re5c6]} Rxd1+ 22. Rxd1 {Strongly threatening Nxc6.} f5 23. Qe3 Nxe5 24. Qxe5 $11 {[%mdl 4096] Endgame KQR-KQR} Kf7 25. f3 Rd7 26. Rc1 Qd5 27. Qxd5 Rxd5 {KR-KR} 28. Rc7+ Kf6 29. Rxa7 Rd2 $1 {[%csl LRb2,LRe2][%mdl 64] [#] Double Attack} 30. b4 Rxe2 31. a4 Ra2 32. h4 Ra1+ 33. Kg2 b5 34. a5 Ra4 35. Rb7 Rxb4 36. Kf2 Rb2+ 37. Ke3 Rb3+ 38. Ke2 Rb2+ 39. Kd3 Rb3+ 40. Ke2 Rb2+ 41. Kd3 Rb3+ {Accuracy: White = 78%, Black = 74%.} (41... Rg2 $5 {[%cal Rg2g3]} 42. Kc3 (42. Rxb5 Rxg3 43. Ke3 Rg1 $15) 42... Rxg3 $11) 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.3"]
[White "Svidler, Peter"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2737"]
[BlackElo "2729"]
[Annotator "TA"]
[PlyCount "136"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,136,11,21,20,13,13,12,14,30,20,22,17,11,9,37,24,35,25,29,21,13,20,35,0,0,4,0,2,0,0,0,0,0,0,13,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-6,-7,-115,-113,-132,-35,-44,-20,-13,-17,-35,-42,-46,-38,-51,-47,-68,-67,-66,-65,-69,-8,-8,0,-8,0,-8,-8,-8,-8,-8,0,0,0,-112,-74,-74,-75,-75,-76,-76,0,-72,-72,-72,0,0,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 O-O 8. Qd2 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves} Nd7 9. O-O-O Nf6 10. Bd3 c5 (10... d5 11. Rhe1 Bg4 12. Bg5 Ne4 13. Bxe4 dxe4 14. Bxe7 Qxe7 15. Qf4 f5 {½-½ (78) Nepomniachtchi,I (2773)-Wei,Y (2736) Abidjan 2019}) 11. Bg5 Be6 $146 ({Predecessor:} 11... Qa5 12. Kb1 Be6 13. c4 Qa6 14. b3 Rfe8 15. Rhe1 Rad8 {1-0 (38) Goganov,A (2610)-Piesik,P (2420) Skopje 2019}) 12. Qf4 d5 13. c4 Re8 (13... d4 {keeps more tension.} 14. Rhe1 Re8 15. Bxf6 Bxf6 16. h4 Bd7) 14. Bxf6 Bxf6 15. cxd5 Bxd5 {[#]} 16. Bxh7+ $1 {[%mdl 576] Decoy} Kxh7 17. Qf5+ {[%mdl 64] Double Attack} Kg8 18. Qxd5 Qb6 19. c3 Re2 {[%csl Ge2][%cal Rb6b2]} 20. Rd2 Rxd2 21. Qxd2 Qe6 22. Kb1 Qg4 23. Rg1 Re8 24. Qc2 b5 25. h3 Qc4 26. Rd1 Re2 27. Rd2 Rxd2 28. Qxd2 Qf1+ 29. Ne1 a5 30. Kc2 b4 31. cxb4 axb4 32. Kb3 Be7 33. Qe3 c4+ 34. Kc2 Bf6 35. b3 g6 36. bxc4 (36. Kd1 $11) 36... Qxc4+ $17 37. Kb1 {[#]} Qf1 (37... Qd5 $1 $17 {Hoping for ...Qd1+.} 38. Qb3 Qe4+ {[%mdl 64] Double Attack} 39. Nd3 Bc3) 38. Kc2 $1 $15 Bc3 (38... Qc4+ $2 39. Kb1 $19) 39. Nd3 Qxg2 40. Qe8+ Kg7 41. a3 Qd5 {White must now prevent ...Qa2+.} 42. Nxb4 Qd2+ 43. Kb3 Qb2+ 44. Ka4 Qxf2 45. Qe4 Qa7+ ({Better is} 45... f5 $15 46. Qe7+ Kh6) 46. Kb3 $11 Bf6 47. Qd3 Qc5 48. Nd5 Be5 49. a4 f5 50. Qc4 Qf2 {[%csl Ge5][%cal Rf2b2]} 51. a5 f4 {...f3 is the strong threat.} 52. a6 (52. Qe4 $11 Bd6 53. Qd3) 52... f3 {Strongly threatening ...Qb2+.} 53. Qd3 Qb2+ 54. Kc4 f2 55. Ne3 Qb6 (55... Qa2+ $17 56. Kb5 Qb2+ 57. Kc5 Qc1+ 58. Kd5 Bf6) 56. Kd5 (56. Qd7+ $11 {remains equal.} Kf8 57. a7 Qa6+ 58. Kd5 Qd3+ 59. Kc6 Qa6+ 60. Kd5 Qd3+ 61. Kc6 Qc3+ 62. Kd5 Qd3+) 56... Bf4 $17 57. Nf1 Kh6 (57... Qa5+ $17 58. Kc6 Qc7+ 59. Kb5 Qb8+ 60. Kc4 Qc8+ 61. Kb5 Qe8+ 62. Kb6 Qe5 63. Qd7+ Kh6) 58. Ke4 $11 {The position is equal.} Bb8 $132 {[%mdl 2048] Black puts up resistance} 59. Qe3+ Qxe3+ 60. Kxe3 {[%mdl 4096] Endgame KB-KN} Ba7+ 61. Kf3 Kg5 62. Nd2 Kh4 63. Kg2 g5 64. Nf3+ Kh5 65. Ne5 Kh4 $1 66. Ng6+ Kh5 67. Ne7 g4 68. hxg4+ Kxg4 {Accuracy: White = 69%, Black = 58%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.12"]
[Round "1.3"]
[White "Svidler, Peter"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "C24"]
[WhiteElo "2737"]
[BlackElo "2729"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,83,33,16,18,19,13,33,33,27,24,32,26,43,37,33,29,41,40,41,37,31,43,43,-2,-20,-10,-8,-14,-18,-22,-20,-26,-7,-43,11,0,14,18,7,8,17,16,16,16,38,9,7,15,18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. Bb3 Bb4+ 6. Bd2 {C24: Bishop's Opening: 2...Nf6} Bxd2+ 7. Qxd2 Qd6 8. Qg5 {White is slightly better.} Nbd7 9. exd5 cxd5 10. d4 e4 11. Nh4 $146 ({Predecessor:} 11. Ne5 O-O 12. Nc3 Nb6 13. f3 {½-½ (34) Vitiugov,N (2721)-Zubov,A (2612) Gjakova 2016}) 11... Nb6 12. Qxg7 Qf4 $1 {Threatens to win with ...Rg8.} 13. Qxh8+ Ke7 {Hoping for ...Qc1+.} 14. Nc3 Qxh4 15. Qg7 {Strongly threatening Qg3.} Bg4 $1 {White must now prevent ...Rg8.} 16. Bxd5 {[%mdl 64] [#] Decoy} (16. Nxe4 $5 Nxe4 17. O-O $14) 16... Nbxd5 17. Nxd5+ Nxd5 18. Qe5+ Be6 {...Rg8 is the strong threat.} 19. c4 f6 20. Qg3 Nf4 21. d5 Nd3+ (21... Qg4 $15 22. Qxg4 Bxg4) 22. Kd2 $11 Qxg3 23. hxg3 Bf5 24. f3 exf3 25. gxf3 Nxb2 26. Rae1+ Kd7 27. g4 {[%mdl 1024] White has compensation.} (27. Kc3 $5 {[%cal Rc3b2]} Nd3 28. Re3 $14) 27... Bg6 {The position is equal.} 28. Kc3 Nd3 29. Re6 Rf8 30. g5 fxg5 {[#]} 31. Rxg6 $1 {[%mdl 512]} hxg6 {[%mdl 4096] Endgame KRN-KR} 32. Rh7+ Kd6 33. Kxd3 Rxf3+ {KR-KR} 34. Ke2 Rc3 (34... g4 {looks sharper.} 35. Rxb7 Ra3 36. Rg7 g5 37. Rxg5 g3) 35. Rxb7 Rxc4 {And now ...Ra4 would win.} 36. Rxa7 Kxd5 (36... Ke5 {is more complex.} 37. d6 Re4+ 38. Kf3 Rf4+ 39. Kg3 Kxd6 40. Ra6+ Ke5) 37. Ra5+ Rc5 38. Rxc5+ Kxc5 39. Kf3 Kb4 40. Kg4 Ka3 41. Kxg5 Kxa2 42. Kxg6 {Accuracy: White = 77%, Black = 63%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.13"]
[Round "1.3"]
[White "Duda, Jan-Krzysztof"]
[Black "Svidler, Peter"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2729"]
[BlackElo "2737"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,83,0,0,34,13,22,22,33,18,11,0,0,0,0,0,0,3,-7,-5,60,0,27,50,42,40,43,40,34,31,60,64,91,63,90,62,47,53,51,53,66,52,57,46,102,0,12,0,0,8,42,28,30,28,33,4,4,8,23,6,8,8,30,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 O-O 5. g3 d6 6. d4 a6 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3} (6... Nbd7 7. Bg2 c6 8. O-O Re8 9. Nc3 e5 10. e4 exd4 11. Nxd4 Nc5 12. Re1 Ng4 13. h3 Ne5 14. Re3 Qb6 15. Nc2 a5 16. Bf1 Be6 17. Rb1 a4 18. b4 Ncd7 19. Na3 Qxb4 20. Bc1 {½-½ (41) Caruana,F (2816)-Grischuk,A (2766) Paris 2018}) 7. Nc3 Nc6 8. Bg2 e5 9. O-O e4 10. Ne1 Bf5 $146 ({Predecessor:} 10... Re8 11. Nc2 Nb8 12. d5 Nbd7 13. Ne3 h5 14. Qc2 Qe7 15. Rae1 Bh6 16. Bc1 Nf8 {0-1 (49) Bogosavljevic,B (2532)-Burovic,R (2002) Neum 2014}) 11. h3 h5 12. Nc2 Qd7 13. Kh2 Rfe8 14. Ne3 {[#]} Ne7 (14... Nxd4 $1 $11 {[%mdl 512]} 15. Nxe4 (15. Qxd4 Ng4+ 16. hxg4 Bxd4 $11) 15... Bxe4 16. Bxd4 {[#]} h4 $1 {[%mdl 512]}) 15. Rc1 (15. d5 $14) 15... c6 16. d5 cxd5 17. cxd5 b5 18. Rc2 Rac8 19. a3 a5 20. Rd2 Kh7 21. Qa1 Neg8 22. Nxf5 gxf5 23. e3 h4 24. Ne2 Nh5 25. Bxg7 Nxg7 26. Rg1 hxg3+ 27. fxg3 (27. Nxg3 $16 {Strongly threatening Bxe4.} Re5 28. Ne2) 27... Re5 $11 28. Rc1 Nf6 29. Nf4 Ngh5 30. Bf1 Rg8 31. Rg2 Qe7 32. Qb2 Nxf4 33. gxf4 Rxd5 34. b4 axb4 35. axb4 Rg6 36. Rc8 Rd1 {The position is equal.} 37. Be2 Rxg2+ 38. Kxg2 Re1 39. Kf2 Rh1 40. Kg2 Re1 41. Kf2 Rh1 42. Kg2 {Accuracy: White = 60%, Black = 52%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.3"]
[White "Duda, Jan-Krzysztof"]
[Black "Svidler, Peter"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2729"]
[BlackElo "2737"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,137,10,29,20,19,17,16,16,37,0,16,17,18,19,46,26,22,21,24,23,42,41,52,36,45,0,13,0,43,41,82,83,79,101,99,101,106,55,59,60,93,90,164,124,286,286,255,192,188,156,158,170,190,96,93,108,258,273,256,113,134,105,93,0,124,109,108,83,79,79,84,77,93,93,134,134,133,132,132,127,111,94,87,81,142,137,185,195,192,180,213,213,252,235,272,139,327,320,280,273,464,457,449,439,502,443,624,615,637,615,460,79,68,0,246,247,276,138,238,208,2355,2156,29982,29983,29982,29983,29995,29995]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qb3 Nb6 6. d4 Bg7 7. Bf4 {D90: Grünfeld: 4 Nf3 Bg7 sidelines} Be6 8. Qa3 O-O 9. e4 {The position is equal.} c6 10. Rd1 N8d7 {[%cal Bb8d7,Bd7e5,Be5c4,Bc4d2][%mdl 32]} 11. h4 Bg4 $146 ({Predecessor:} 11... h6 12. h5 g5 13. Bxg5 hxg5 14. h6 Bf6 {0-1 (44) Bacrot,E (2692)-Ivanchuk,V (2710) Ashdod 2015}) 12. Be2 Bxf3 13. Bxf3 e5 14. dxe5 Qe8 15. Be2 Nxe5 16. Qb3 $36 {[%mdl 2048] White has the initiative.} Nec4 {next ...Nxb2! is good for Black.} 17. Bc1 Qe6 $1 18. O-O Rfd8 19. h5 Bd4 20. Rd3 Bf6 21. Rg3 Nd2 22. Qxe6 fxe6 23. Re1 Be5 24. Rg4 (24. Rh3 $16) 24... Kf7 25. g3 a5 26. Kg2 Nbc4 (26... Rd6 $16) 27. Rh1 {Hoping for hxg6+.} Rh8 $2 (27... g5 $16 {was necessary.}) 28. Na4 $18 b5 29. b3 bxa4 30. bxc4 Rad8 31. c5 Bc3 {[#]} 32. Rf4+ ({Better is} 32. e5 $1 $18 {[%mdl 512]}) 32... Ke7 $16 33. e5 {And now Bg4 would win.} Bxe5 (33... g5 $16 34. Rxa4 Rd5) 34. Rxa4 $18 Bc3 35. Rg4 (35. Ra3 $18 Bb4 36. Re3 Bxc5 37. Rc3) 35... Kf7 36. Rf4+ Ke7 37. Rg4 Kf7 $1 38. Bd1 Rd5 39. hxg6+ hxg6 40. Rxh8 Bxh8 41. Bc2 g5 42. Ba4 Bf6 43. Bxc6 Rxc5 44. Bxd2 Rxc6 45. Bxg5 $16 {[%mdl 4096] Endgame Rf4 is the strong threat. KRB-KRB} Bc3 46. Rf4+ Kg6 47. Be7 Rb6 (47... e5 $142 48. Ra4 Rc8) 48. Rc4 Bb4 49. Bc5 Rb5 50. Be3 Rd5 51. Kf3 Rd3 {[#]} 52. Ke4 $1 {[%cal Re4d3]} Ra3 {[#]} 53. Rc2 (53. Ke5 $1 $18) 53... Bd6 $2 (53... Bc3 $16 54. Kd3 Be1+ 55. Kc4 Ra4+ 56. Kb5 Rb4+ 57. Kc5 Rb1) 54. Rc6 $18 Ra4+ 55. Kf3 Be7 $2 (55... Bb4 {was worth a try.} 56. Rxe6+ Kf5) 56. Rxe6+ Kf7 57. Ra6 Rxa2 58. Ke4 a4 (58... Bb4 $142 59. g4 Rc2) 59. g4 a3 60. Kf5 Rb2 61. Bd4 $2 (61. g5 $18 {is more deadly.}) 61... Rd2 $16 62. Be3 ({White should try} 62. Ba7 $14) 62... Rd5+ $2 (62... Rb2 $1 $11 {and Black is okay.}) 63. Ke4 $18 Rb5 64. Bd4 (64. f4 $18) 64... Bb4 (64... Rb4 $16) 65. Ra7+ Kg6 $2 (65... Kg8 66. Ra4 Bf8) 66. f4 Ra5 67. f5+ {White mates.} Kg5 68. Rg7+ Kh4 69. Bf2+ {Played: Ke4-f3} 1-0

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.4"]
[White "Grischuk, Alexander"]
[Black "Vitiugov, Nikita"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2766"]
[BlackElo "2727"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,45,17,23,16,8,17,12,17,18,20,14,0,15,0,0,0,0,0,0,-21,-19,-20,43,32,58,26,791,807,1298,1299,1287,1271,2291,1928,2181,1928]} 1. Nf3 $146 ({Predecessor:} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 {0-1 (45) Jianu,V (2588)-Marin,M (2581) Calimanesti 2014}) 1... Nf6 2. c4 e6 3. Nc3 d5 4. d4 Nbd7 5. Bf4 dxc4 6. e3 Nb6 7. Bxc4 {[%mdl 64] Decoy. D37: Queen's Gambit Declined: 5 Bf4} Nxc4 8. Qa4+ {[%mdl 64] Double Attack} c6 9. Qxc4 {The position is equal.} Nd5 10. Bg3 Qb6 11. Qe2 Bb4 12. O-O Nxc3 13. bxc3 Bxc3 14. Rab1 Qd8 $1 15. Rb3 Ba5 16. e4 Bc7 ({Black should try} 16... O-O $11) 17. Bh4 $36 {[%mdl 3072] White has compensation. White is more active.} Qd7 18. Rd1 $1 {And now Ne5 would win.} O-O $2 {[%mdl 8192]} (18... f6 $11) 19. Ne5 $18 {White is clearly winning.} Qe8 {[#]} 20. Bf6 $1 {[%mdl 512] White wants to mate with Qg4.} Bd8 {[#]} (20... gxf6 21. Qh5) 21. Bxg7 $1 {[%mdl 512]} Kxg7 22. Rg3+ Kh8 {[#]} 23. Qh5 $1 {[%mdl 512] Accuracy: White = 75%, Black = 44%.} 1-0

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.12"]
[Round "1.4"]
[White "Mamedyarov, Shakhriyar"]
[Black "Dubov, Daniil"]
[Result "1/2-1/2"]
[ECO "D33"]
[WhiteElo "2765"]
[BlackElo "2700"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,69,44,44,44,43,35,35,43,43,26,31,43,53,40,24,18,7,18,6,18,11,16,26,39,0,0,0,0,0,24,21,64,61,78,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 Nf6 2. Nc3 c5 3. g3 e6 4. Nf3 d5 5. cxd5 exd5 6. d4 Nc6 7. Bg2 cxd4 8. Nxd4 Bc5 9. Nb3 Bb6 {D33: Tarrasch Defence: 6 g3 sidelines} 10. Na4 $146 (10. Bxd5 Nb4 $15) ({Predecessor:} 10. O-O d4 11. Na4 O-O 12. Bg5 Re8 13. Nxb6 axb6 14. e3 d3 15. Bxf6 gxf6 16. a3 Be6 17. Rc1 {½-½ (28) Nakamura,H (2761)-Dubov,D (2690) Moscow 2019}) 10... O-O 11. Nxb6 axb6 {White is slightly better.} 12. Be3 h5 13. O-O h4 14. Bg5 h3 15. Bh1 Re8 16. Re1 Bg4 17. a3 Qd6 18. Qd2 Qe5 19. f3 Be6 20. Rad1 d4 21. f4 Qb5 22. Nxd4 Nxd4 23. Qxd4 Bb3 24. Rd3 $1 (24. Bxb7 Ra7 $17) (24. Bxf6 $6 Bxd1 25. Rxd1 (25. Bxg7 $2 Rad8 $19) 25... gxf6 $11) 24... Bc4 25. Rc3 (25. Bxb7 $2 Bxd3 26. Bxf6 (26. Bxa8 $2 Qa5 $19 {[%mdl 64] Double Attack}) 26... gxf6 $19) ({White should try} 25. Rd2 $1 $16) 25... Bxe2 $11 {And now ...Bf3! would win.The position is equal.} 26. Bxf6 ({Don't blunder} 26. Bxb7 $2 Bf3 $1 $19 {[%mdl 512]}) 26... gxf6 27. Qxf6 {Black must now prevent Rec1.} ({Don't go for} 27. Bxb7 $2 {[#]} Bf3 $1 $19 {[%mdl 512]}) 27... Bf3 28. Re5 ({Wrong is} 28. Rxe8+ $2 Rxe8 29. Qg5+ Qxg5 $19) 28... Rxe5 29. fxe5 Bxh1 30. e6 Qd5 $1 {[%csl Gh1,Gh3][%cal Rd5g2]} 31. Qxf7+ Kh8 {[%csl Gh1,Gh3][%cal Rd5g2]} 32. Qf6+ Kg8 {[%csl Gh1,Gh3][%cal Rd5g2]} 33. Qg6+ Kh8 {[%csl Gh1,Gh3][%cal Rd5g2]} 34. Qf6+ Kg8 {[%csl Gh1,Gh3][%cal Rd5g2]} 35. Qf7+ {Accuracy: White = 69%, Black = 72%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.4"]
[White "Vitiugov, Nikita"]
[Black "Grischuk, Alexander"]
[Result "0-1"]
[ECO "D40"]
[WhiteElo "2727"]
[BlackElo "2766"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,48,13,6,6,12,11,0,1,0,0,0,16,0,0,0,0,-24,-17,-29,-27,-109,-57,-63,-73,-69,-50,-81,-31,-48,-39,-193,-172,-165,-165]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c5 5. e3 Nc6 6. cxd5 exd5 7. Bb5 cxd4 8. Nxd4 Bd7 9. O-O Bd6 {D32: Tarrasch Defence: Sidelines and lines without g3} 10. Nf3 (10. b3 O-O 11. Bb2 Re8 12. Nf3 Bg4 13. Bxc6 bxc6 14. Rc1 Be5 15. Na4 Bxb2 16. Nxb2 Rc8 17. h3 Bxf3 18. Qxf3 {½-½ (60) So,W (2778)-Anand,V (2759) Leuven 2018}) 10... Bg4 11. Be2 O-O {The position is equal.} 12. h3 Bh5 13. b3 {[#]} Qa5 $146 ({Predecessor:} 13... Rc8 14. Bb2 a6 15. Nh4 Bg6 16. Nxg6 hxg6 17. Bf3 Be5 18. Rb1 d4 19. exd4 Bxd4 20. Na4 Ba7 21. Rc1 {½-½ (20) Grigoriants,S (2540)-Lomasov,S (2553) St Petersburg 2018}) 14. Bb2 Rad8 15. Nd4 Nxd4 16. Bxh5 Nc6 {[#] aiming for ...d4.} 17. Be2 Be5 $36 {[%mdl 2048] Black is pushing.} 18. Rc1 (18. Qe1 $11 {keeps the balance.}) 18... Ne4 (18... d4 $17 19. exd4 Bf4) 19. Qe1 Bxc3 20. Bxc3 Qxa2 21. Bb5 Nxc3 22. Qxc3 {Hoping for Ra1.} d4 23. exd4 $2 (23. Qa1 $15 Qxb3 24. Bxc6 bxc6 25. exd4) 23... Nxd4 $19 {[%mdl 64] [#] Double Attack} 24. Bc4 b5 {Accuracy: White = 27%, Black = 73%.} 0-1

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.13"]
[Round "1.4"]
[White "Dubov, Daniil"]
[Black "Mamedyarov, Shakhriyar"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "2700"]
[BlackElo "2765"]
[Annotator "RC"]
[PlyCount "155"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} c5 {[%emt 0:00:26]} 3. Nc3 {[%emt 0:00:04]} d5 {[%emt 0:00:13]} 4. cxd5 {[%emt 0:00:16]} Nxd5 {[%emt 0:00:07]} 5. d4 {[%emt 0:01:06]} Nxc3 {[%emt 0:01:11]} 6. bxc3 {[%emt 0:00:08]} g6 {[%emt 0:00:15]} 7. e4 {[%emt 0:00:12]} Bg7 {[%emt 0:00:20]} 8. Bb5+ {[%emt 0:00:15]} Nc6 {[%emt 0:00:18]} 9. O-O {[%emt 0:00:10]} O-O {[%emt 0:00:27]} 10. Be3 {[%emt 0:00:17]} Bg4 {[%emt 0:00:13]} 11. d5 {[%emt 0:00:18]} Ne5 {[%emt 0:00:20]} 12. Be2 {[%emt 0:00:08]} Nxf3+ {[%emt 0:00:10]} 13. Bxf3 {[%emt 0:00:08]} Bxf3 {[%emt 0:00:04]} 14. Qxf3 {[%emt 0:00:08]} Bxc3 {[%emt 0:00:05]} 15. Rab1 {[%emt 0:00:08]} b6 {[%emt 0:00:05]} 16. Bxc5 {[%emt 0:00:10]} Rc8 {[%emt 0:00:05]} 17. Be3 {[%emt 0:02:59]} Qd7 {[%emt 0:04:31]} 18. Rfc1 {[%emt 0:11:05]} f5 {[%emt 0:09:36]} 19. g3 {[%emt 0:08:47]} Bf6 {[%emt 0:10:49]} 20. Bf4 {[%emt 0:05:19]} fxe4 {[%emt 0:05:19]} 21. Qxe4 {[%emt 0:01:03]} Qf5 {[%emt 0:08:15]} 22. Qe6+ {[%emt 0:14:11]} Qxe6 {[%emt 0:03:30]} 23. dxe6 {[%emt 0:00:08]} g5 {[%emt 0:00:22]} 24. Be3 {[%emt 0:01:54]} Kg7 {[%emt 0:06:29]} 25. g4 {[%emt 0:10:36]} Rfd8 {[%emt 0:06:59]} 26. a4 {[%emt 0:03:33]} h6 {[%emt 0:04:59]} 27. Kg2 {[%emt 0:04:50]} Rxc1 {[%emt 0:09:28]} 28. Rxc1 {[%emt 0:00:06]} Rd5 {[%emt 0:00:02]} 29. Kf3 {[%emt 0:02:25]} Ra5 {[%emt 0:04:08]} 30. Rc4 {[%emt 0:02:20]} Be5 {[%emt 0:04:30]} 31. Ke4 {[%emt 0:00:33]} Kf6 {[%emt 0:00:08]} 32. Bd2 {[%emt 0:00:57]} b5 {[%emt 0:01:19]} 33. axb5 {[%emt 0:00:27]} Rxb5 {[%emt 0:00:05]} 34. Ra4 {[%emt 0:01:50]} Bb8 {[%emt 0:00:27]} 35. Ra1 {[%emt 0:19:10]} Kxe6 {[%emt 0:02:26]} 36. h4 {[%emt 0:00:34]} gxh4 {[%emt 0:06:21]} 37. Rh1 {[%emt 0:01:12]} Re5+ {[%emt 0:02:38]} 38. Kd3 {[%emt 0:02:02]} Rd5+ {[%emt 0:00:37]} 39. Kc2 {[%emt 0:01:05]} h5 {[%emt 0:02:52]} 40. Rxh4 {[%emt 0:00:10]} hxg4 {[%emt 0:00:06]} 41. Rxg4 {[%emt 0:30:05]} Bd6 {[%emt 0:31:42]} 42. Ra4 {[%emt 0:04:02]} Bc5 {[%emt 0:00:15]} 43. f3 {[%emt 0:01:33]} Bb6 {[%emt 0:01:00]} 44. Bc3 {[%emt 0:00:00]} Kd7 {[%emt 0:00:00]} 45. Re4 {[%emt 0:00:00]} Bc5 {[%emt 0:00:00]} 46. f4 {[%emt 0:00:00]} Kc6 {[%emt 0:00:00]} 47. Ra4 {[%emt 0:00:00]} Rh5 {[%emt 0:00:00]} 48. Kb3 {[%emt 0:00:00]} Rh3 {[%emt 0:00:00]} 49. Kc4 {[%emt 0:00:00]} Re3 {[%emt 0:00:00]} 50. Ra6+ {[%emt 0:00:00]} Bb6 {[%emt 0:00:00]} 51. Be5 {[%emt 0:00:00]} Re1 {[%emt 0:00:00]} 52. Ra2 {[%emt 0:00:00]} Re4+ {[%emt 0:00:00]} 53. Kd3 {[%emt 0:00:00]} Kd5 {[%emt 0:00:00]} 54. Ra6 {[%emt 0:00:00]} Re3+ {[%emt 0:00:00]} 55. Kd2 {[%emt 0:00:00]} Kc4 {[%emt 0:00:00]} 56. Ra4+ {[%emt 0:00:00]} Kb5 {[%emt 0:00:00]} 57. Ra1 {[%emt 0:00:00]} Rh3 {[%emt 0:00:00]} 58. Rf1 {[%emt 0:00:00]} e6 {[%emt 0:05:25]} 59. Bb8 {[%emt 0:00:00]} Rh8 {[%emt 0:01:07]} 60. Be5 {[%emt 0:00:00]} Rh2+ {[%emt 0:00:06]} 61. Kd3 {[%emt 0:00:13]} Rh3+ {[%emt 0:00:06]} 62. Kd2 {[%emt 0:02:19]} Kc4 {[%emt 0:00:57]} 63. Rc1+ {[%emt 0:00:07]} Kd5 {[%emt 0:00:07]} 64. Rc8 {[%emt 0:01:00]} Ke4 {[%emt 0:02:20]} 65. Re8 {[%emt 0:02:11]} Rh6 {[%emt 0:00:11]} 66. Kc3 {[%emt 0:01:02]} Be3 {[%emt 0:01:07]} 67. Ra8 {[%emt 0:03:16]} Rh1 {[%emt 0:01:06]} 68. Re8 {[%emt 0:00:25]} Rc1+ {[%emt 0:00:34]} 69. Kb3 {[%emt 0:00:54]} Rc6 {[%emt 0:00:29]} 70. Rf8 {[%emt 0:00:09]} Rb6+ {[%emt 0:01:50]} 71. Kc4 {[%emt 0:00:49]} Rc6+ {[%emt 0:00:01]} 72. Kb3 {[%emt 0:00:08]} Rb6+ {[%emt 0:00:04]} 73. Kc4 {[%emt 0:00:09]} a5 {[%emt 0:01:06]} 74. Ra8 {[%emt 0:02:24]} Rc6+ {[%emt 0:01:27]} 75. Kb3 {[%emt 0:00:32]} Bxf4 {[%emt 0:00:23]} 76. Bc3 {[%emt 0:00:36]} Bc7 {[%emt 0:00:09]} 77. Rc8 {[%emt 0:02:45]} a4+ {[%emt 0:00:43]} 78. Kc2 {[%emt 0:00:16] Ke5} 0-1

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.13"]
[Round "1.5"]
[White "Grischuk, Alexander"]
[Black "Vitiugov, Nikita"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2766"]
[BlackElo "2727"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,19,24,13]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 O-O 5. e3 d5 6. a3 Be7 7. b3 b6 8. Bb2 Bb7 9. Bd3 c5 10. O-O {Predecessor:} Nc6 $146 11. Qe2 cxd4 12. exd4 Rc8 13. Rac1 Re8 14. c5 a5 15. Bb5 Nd7 16. Bxc6 Bxc6 17. b4 b5 18. Nb3 axb4 19. axb4 Qc7 20. Ra1 Bd8 21. Ne1 {1-0 (54) Smirnov,A (2527)-Margvelashvili,G (2530) chess.com INT 2018} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.5"]
[White "Aronian, Levon"]
[Black "Yu, Yangyi"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2756"]
[BlackElo "2736"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,92,32,30,10,14,13,13,15,12,8,11,10,8,0,3,0,0,0,14,14,18,18,53,39,33,27,17,20,23,22,21,15,59,0,0,0,0,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. d4 g6 5. Nc3 Bg7 6. Be2 O-O 7. O-O dxc4 8. Bxc4 Bg4 9. Be2 Nbd7 {[%cal Bb8d7,Bd7c5,Bc5d3,Bd3c1][%mdl 32]} 10. h3 {D94: Grünfeld: 4 Nf3 Bg7 5 e3} (10. e4 Bxf3 11. Bxf3 e5 12. dxe5 Nxe5 13. Be2 Qe7 14. Qc2 Rfd8 15. h3 c5 16. Bg5 Nc6 17. Rae1 h6 {½-½ (28) Cheparinov,I (2703)-Mamedov,R (2680) Kocaeli 2017}) 10... Bxf3 $1 11. Bxf3 e5 12. d5 cxd5 13. Bxd5 Nc5 14. Bc4 $146 ({Predecessor:} 14. b4 Nxd5 15. Qxd5 Qxd5 16. Nxd5 Rfd8 17. Ne7+ Kf8 18. Nxg6+ hxg6 19. bxc5 {1-0 (52) Ivanov,I (2489)-Zugic,I (2450) Toronto 2002}) 14... e4 15. Qe2 Qe7 16. b3 Nd3 17. a4 Nxc1 18. Raxc1 Rad8 19. Rfd1 Qe5 20. Rc2 Rfe8 21. Rxd8 Rxd8 22. Rd2 Rxd2 23. Qxd2 Bf8 24. Nd5 Nxd5 25. Bxd5 (25. Qxd5 $14 Qxd5 26. Bxd5) 25... b6 $11 {The position is equal.} 26. g3 Kg7 27. Kg2 Bb4 28. Qd1 Bc5 29. Bc4 a5 30. h4 h5 31. Qc2 Bb4 32. Bb5 Bc5 33. Bc6 f5 34. Bb5 Kf6 35. Be2 Qd5 36. Kg1 Qd6 37. Qc1 Qd5 38. Bc4 Qd6 39. Kf1 Bb4 40. Be2 Qc5 41. Qd1 Qd6 42. Qc2 Qc5 43. Bc4 Qe5 44. Qd1 Qd6 45. Qa1+ Qe5 46. Qxe5+ Kxe5 {Accuracy: White = 83%, Black = 80%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.5"]
[White "Yu, Yangyi"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2736"]
[BlackElo "2756"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,63,2,10,0,11,7,49,0,9,4,28,17,35,17,13,14,19,10,7,12,0,0,0,0,0,0,0,1,8,0,0,0,13,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Bg5 h6 6. Bh4 d6 7. c3 a6 8. Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Ba7 9. a4 Qe7 10. Qe2 {White is slightly better.} Be6 11. b4 Bxc4 $146 ({Predecessor:} 11... O-O 12. O-O Rfe8 13. Rfb1 Rab8 14. a5 Bxc4 15. Nxc4 Qe6 16. Bxf6 Qxf6 {1-0 (51) Najer,E (2707)-Aleksandrov,A (2580) Tbilisi 2017}) 12. Nxc4 Qe6 13. Bxf6 Qxf6 {The position is equal.} 14. O-O O-O 15. b5 Nd8 16. Rfb1 axb5 17. axb5 {[#] aiming for b6.} Ne6 18. g3 Bc5 19. Ne3 c6 20. bxc6 bxc6 21. Nf5 Rxa1 22. Rxa1 h5 23. Ra6 g6 24. Ne3 Qe7 25. Nc2 Qb7 26. d4 exd4 27. cxd4 Bb6 28. Ra1 Ra8 29. Rb1 Qa6 30. Qxa6 Rxa6 31. Nb4 Ra4 32. Nxc6 {Accuracy: White = 57%, Black = 69%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.12"]
[Round "1.5"]
[White "Vitiugov, Nikita"]
[Black "Grischuk, Alexander"]
[Result "1/2-1/2"]
[ECO "C58"]
[WhiteElo "2727"]
[BlackElo "2766"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,90,41,25,49,31,50,41,42,34,47,62,45,29,26,16,19,33,26,9,0,11,18,12,3,15,16,-43,-45,-67,-67,-71,-64,-108,-79,-142,-143,-141,-141,-206,-147,-431,-89,-86,-90,-84,-83,-90,-59,-55,-58,-66,-60,-66,-74,-77,-31,-31,-8,-8,-8,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Ng4 {C58: Two Knights: 4 Ng5 d5 5 exd5 Na5 sidelines} (8... Nd5 9. Nf3 Bd6 10. O-O O-O 11. Re1 f5 12. b4 Nxb4 13. Nxe5 Bxe5 14. Rxe5 Nxd3 15. cxd3 Qd4 16. Rxa5 Qxa1 {½-½ (31) Vovk,A (2616)-Demchenko,A (2661) Fagernes 2019}) 9. Ne4 f5 10. Be2 h5 {White is slightly better.} 11. h3 fxe4 12. hxg4 Bc5 13. Nc3 Qd4 {[%csl Gc5][%cal Rd4f2]} 14. O-O $1 Rf8 $146 {[%cal Rf8f2]} ({Predecessor:} 14... O-O 15. Qe1 hxg4 16. d3 exd3 17. Bxd3 Rxf2 18. Qxf2 Qxf2+ 19. Rxf2 {½-½ (28) Filipchenko,V (2410)-Anokhin,Y (2397) ICCF email 2016}) 15. Qe1 {Black must now prevent d3.} hxg4 16. g3 Bf5 $36 {[%mdl 2048] [#] Black has good play.} 17. d3 $1 {[%mdl 512]} Rh8 $1 {[%cal Re4d3]} (17... exd3 $6 18. Bxd3 Bxd3 19. cxd3 $16) 18. Be3 Qd6 $1 19. Kg2 $1 (19. Nxe4 $2 Bxe4 20. dxe4 Qg6 $19) (19. dxe4 $2 Bxe3 20. Kg2 Bd2 $19) 19... O-O-O {Strongly threatening ...Bxe3.} 20. Rh1 ({Weaker is} 20. Nxe4 Bxe4+ 21. dxe4 Bxe3 $18) (20. dxe4 $6 Bxe3 21. Ba6+ (21. fxe3 Be6 $16) (21. exf5 $2 Rh2+ 22. Kg1 Rdh8 $19) 21... Kb8 $16) ({Better is} 20. Bg5 $11 exd3 21. Bxd3 Bxd3 22. cxd3 Qxd3 23. Qe4) 20... Bxe3 $15 21. fxe3 Rxh1 22. Qxh1 exd3 23. cxd3 Bxd3 24. Bxg4+ ({White should play} 24. Rd1 Bxe2 25. Rxd6 Bf3+ 26. Kg1 Bxh1 27. Rxd8+ Kxd8 28. Kxh1) 24... Kb8 $17 {...Qb4 is the strong threat.} 25. Qh4 Nc4 26. Re1 (26. Qg5 $17) 26... Rf8 27. Bf3 $2 {[%mdl 8192]} (27. Qg5 $17) 27... Bf1+ $2 (27... e4 $19 28. Be2 Nxe3+ 29. Kh1 Qe5) 28. Kg1 Rxf3 ({Don't blunder} 28... Qd2 $2 29. Rxf1 Qxe3+ 30. Kh2 $18) 29. Rxf1 Rxf1+ 30. Kxf1 Qd3+ 31. Kg1 Qxe3+ 32. Kh2 Qh6 33. Qxh6 gxh6 $15 {[%mdl 4096] Endgame KN-KN} 34. Kh3 Nxb2 35. Kg4 Kc7 {aiming for ...Kd6.} 36. Kh5 {The position is equal.} Nc4 37. Kxh6 Ne3 {And now ...Nf5+ would win.} 38. Kh5 $1 Kd6 39. g4 Ke6 (39... Nd5 $5 40. Ne4+ $8 Ke6 $11) 40. g5 Nf5 41. g6 c5 42. Kg5 c4 43. Ne4 {Threatens to win with Nc5+.} Ne7 {White should prevent ...Kd5.} 44. g7 Kf7 45. Nd6+ {[%mdl 64] [#] Double Attack} Kxg7 {Accuracy: White = 60%, Black = 66%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.12"]
[Round "1.6"]
[White "Aronian, Levon"]
[Black "Yu, Yangyi"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2756"]
[BlackElo "2736"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,57,18,8,8,8,8,18,12,16,10,15,0,0,0,0,2,0,0,-6,-30,0,0,0,0,0,-20,-9,-19,-15,-17,13,11,14,14,16,18,19,18,24,0,0,0,0,-8,0,0]} 1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Bf4 Nc6 5. e3 Nf6 6. Nc3 Bf5 7. Qb3 Na5 8. Qa4+ {D10: Slav Defence: 3 cxd5 (without early Nf3) and 3 Nc3} Bd7 9. Qc2 {next Nb5 is good for White.} e6 10. Nf3 Be7 11. Bd3 Nc6 (11... Rc8 12. O-O Nc6 13. Qe2 Nh5 14. Be5 O-O 15. h3 f5 {1-0 (38) Korobov,A (2694)-Rodshtein,M (2674) Czech Republic 2018}) 12. Qe2 Nh5 13. Be5 f6 14. Bg3 f5 15. Nd2 g6 16. Nb3 $146 ({Predecessor:} 16. Be5 O-O 17. O-O Nxe5 18. dxe5 {0-1 (48) Januario,S (2165)-El Debs,F (2522) Brasilia 2014}) 16... Nxg3 17. hxg3 Nb4 18. Bb1 Qb6 19. g4 O-O-O 20. gxf5 gxf5 21. a3 Nd3+ 22. Bxd3 {[#] Black must now prevent Bb5.} Qxb3 23. Bb5 h5 24. Rc1 Kb8 25. Bxd7 Rxd7 26. Qc2 Qb6 {The position is equal.} 27. Na4 Qd8 28. Nc5 Bxc5 29. dxc5 {Accuracy: White = 69%, Black = 91%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.6"]
[White "Nakamura, Hikaru"]
[Black "Topalov, Veselin"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2754"]
[BlackElo "2740"]
[Annotator "ChessBase"]
[PlyCount "99"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. e3 {[%emt 0:00:00]} g6 {[%emt 0:00:11]} 3. b4 {[%emt 0:00:00]} Bg7 {[%emt 0:00:10]} 4. Bb2 {[%emt 0:00:00]} O-O {[%emt 0:00:12]} 5. c4 {[%emt 0:00:01]} b6 {[%emt 0:00:04]} 6. Be2 {[%emt 0:00:27]} c5 {[%emt 0:00:02]} 7. a3 {[%emt 0:00:11]} Bb7 {[%emt 0:00:31]} 8. O-O {[%emt 0:00:05]} d6 {[%emt 0:00:49]} 9. d3 {[%emt 0:00:35]} Nbd7 {[%emt 0:00:15]} 10. Nc3 {[%emt 0:00:02]} e6 {[%emt 0:00:27]} 11. Qb3 {[%emt 0:00:51]} Qe7 {[%emt 0:00:30]} 12. d4 {[%emt 0:00:28]} Rab8 {[%emt 0:00:17]} 13. a4 {[%emt 0:02:29]} d5 {[%emt 0:02:59]} 14. bxc5 {[%emt 0:00:25]} bxc5 {[%emt 0:00:02]} 15. Ba3 {[%emt 0:00:01]} Rfc8 {[%emt 0:00:20]} 16. cxd5 {[%emt 0:05:36]} Nxd5 {[%emt 0:00:52]} 17. Nxd5 {[%emt 0:00:15]} Bxd5 {[%emt 0:00:02]} 18. Qd1 {[%emt 0:00:01]} Qd8 {[%emt 0:01:36]} 19. Ba6 {[%emt 0:01:19]} Rc7 {[%emt 0:00:05]} 20. Bb5 {[%emt 0:00:02]} cxd4 {[%emt 0:04:10]} 21. Nxd4 {[%emt 0:01:49]} Nb6 {[%emt 0:00:25]} 22. Rc1 {[%emt 0:02:11]} Rxc1 {[%emt 0:02:04]} 23. Bxc1 {[%emt 0:00:05]} Rc8 {[%emt 0:00:07]} 24. Ba6 {[%emt 0:00:37]} Rb8 {[%emt 0:01:18]} 25. Re1 {[%emt 0:01:57]} Nd7 {[%emt 0:00:31]} 26. Bb5 {[%emt 0:00:55]} Nc5 {[%emt 0:00:08]} 27. Ba3 {[%emt 0:00:06]} Bf8 {[%emt 0:00:57]} 28. Qc2 {[%emt 0:01:04]} Rc8 {[%emt 0:00:41]} 29. Rc1 {[%emt 0:00:49]} Bb7 {[%emt 0:01:21]} 30. Qb1 {[%emt 0:00:27]} Be4 {[%emt 0:01:12]} 31. Qa2 {[%emt 0:00:30]} Bd5 {[%emt 0:00:23]} 32. Qc2 {[%emt 0:00:11]} Qg5 {[%emt 0:00:25]} 33. Bf1 {[%emt 0:00:10]} Qd8 {[%emt 0:00:32]} 34. Qd1 {[%emt 0:00:47]} h5 {[%emt 0:00:57]} 35. Nb5 {[%emt 0:01:11]} a6 {[%emt 0:00:02]} 36. Nd4 {[%emt 0:00:02]} Bb7 {[%emt 0:00:23]} 37. Rb1 {[%emt 0:00:12]} Be4 {[%emt 0:00:11]} 38. Rc1 {[%emt 0:00:03]} e5 {[%emt 0:00:38]} 39. Nf3 {[%emt 0:00:12]} Qxd1 {[%emt 0:00:22]} 40. Rxd1 {[%emt 0:00:00]} Bxf3 {[%emt 0:01:01]} 41. gxf3 {[%emt 0:00:02]} Nxa4 {[%emt 0:00:01]} 42. Bxa6 {[%emt 0:00:41]} Ra8 {[%emt 0:00:03]} 43. Bb7 {[%emt 0:00:40]} Rb8 {[%emt 0:00:08]} 44. Bxf8 {[%emt 0:00:02]} Kxf8 {[%emt 0:00:13]} 45. Bc6 {[%emt 0:00:01]} Nb6 {[%emt 0:00:04]} 46. Ra1 {[%emt 0:00:28]} Rc8 {[%emt 0:00:51]} 47. Be4 {[%emt 0:00:08]} Nd7 {[%emt 0:00:06]} 48. Ra7 {[%emt 0:00:37]} Nf6 {[%emt 0:00:04]} 49. Ra5 {[%emt 0:00:20]} Nxe4 {[%emt 0:00:07]} 50. fxe4 {[%emt 0:00:01]} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.14"]
[Round "1.6"]
[White "Topalov, Veselin"]
[Black "Nakamura, Hikaru"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2740"]
[BlackElo "2754"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,92,20,15,16,5,5,22,9,10,11,31,12,18,15,37,24,39,25,23,14,9,10,15,7,14,20,13,8,10,1,12,0,36,6,0,0,4,8,17,25,20,11,16,21,18,27,27,28,16,14,16,15,20,20,27,24,26,13,17,21,22,0,78,24,24,31,31,21,21,21,26,14,72,81,104,81,113,116,118,117,118,118,233,235,5513]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 O-O 6. Bg5 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5} (6. O-O d6 7. Ba4 Ne7 8. Bc2 Ng6 9. d4 Bb6 10. a4 c6 11. dxe5 Nxe5 12. Nxe5 dxe5 13. Qxd8 Rxd8 14. a5 Bc5 {1-0 (39) Carlsen,M (2845)-Grischuk,A (2771) Shamkir 2019}) 6... h6 7. Bh4 Be7 8. O-O {The position is equal.} d6 9. Bg3 a6 10. Ba4 b5 $146 ({Predecessor:} 10... Re8 11. Re1 Bf8 12. h3 b5 13. Bc2 Bb7 {1-0 (43) Borisek,J (2565)-Dobrovoljc,V (2293) Slovenia 2017}) 11. Bc2 Re8 12. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3][%mdl 32]} Bf8 13. Re1 Nh5 14. Nf1 Nxg3 15. hxg3 g6 16. Ne3 Bg7 17. a4 Rb8 18. axb5 axb5 {[%cal Ba6b5,Bb5b4][%mdl 32]} 19. Bb3 Rf8 20. d4 b4 21. Bd5 (21. d5 $5 {[%cal Rd5c6]} Ne7 22. c4 $14) 21... Bd7 22. Ra6 Ne7 23. dxe5 dxe5 24. Bc4 bxc3 25. bxc3 Bc6 26. Qc2 Ra8 27. Rea1 Rxa6 28. Rxa6 Kh7 29. Ra5 f6 30. Nd2 Qd7 31. Nb3 Ra8 32. Nc5 Qd6 $1 33. Rxa8 Bxa8 34. Ne6 h5 35. Qb1 Qb6 {[#]} (35... Bc6 $1 $11 {keeps the balance.}) 36. Qxb6 (36. Qd3 $1 $16 {[%cal Rd3d8]} Qd6 37. g4) 36... cxb6 $11 37. Bd5 Bc6 38. Bxc6 Nxc6 $14 {[%mdl 4096] Endgame KBN-KNN} 39. Nd5 b5 40. Kf1 f5 (40... Kg8 $11 {remains equal.}) 41. Ke2 $16 Bh6 42. Nec7 Na7 43. exf5 gxf5 44. Ne7 f4 45. gxf4 exf4 (45... Bxf4 $16 {might work better.} 46. Kf3 Bc1) 46. Kf3 Nc6 $2 {Accuracy: White = 57%, Black = 45%.} (46... Bg5) 1-0

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.13"]
[Round "1.6"]
[White "Yu, Yangyi"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2736"]
[BlackElo "2756"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,49,28,31,18,15,15,12,14,11,12,10,9,25,24,45,25,26,21,25,31,31,22,23,18,25,14,33,28,27,13,35,25]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O dxc4 7. Ne5 Nc6 8. Bxc6 bxc6 9. Nxc6 Qe8 10. Nxe7+ Qxe7 11. Qc2 {E05: Open Catalan: 5 Nf3 Be7} (11. Qa4 e5 12. dxe5 Qxe5 13. Re1 Be6 14. Nc3 Ne4 15. Qc2 Nxc3 16. Qxc3 Qxc3 17. bxc3 Rab8 18. f3 Rfd8 19. Bf4 Rb2 {½-½ (32) Nakamura,H (2746)-So,W (2762) Saint Louis 2019}) 11... c5 12. dxc5 Qxc5 13. Be3 {The position is equal.} Qc6 14. f3 {[#]} (14. Rc1 {seems wilder.} Bb7 15. f3 Rfc8 16. Bf2 Ng4 17. Nd2) 14... a5 $146 ({Predecessor:} 14... e5 15. Nd2 Ba6 16. Rac1 Rfc8 17. Bf2 e4 18. Nxe4 Nxe4 19. Qxe4 Qxe4 20. fxe4 {½-½ (49) Gunina,V (2527)-Tan,Z (2523) China 2018}) 15. Nc3 e5 16. Qa4 Qe6 17. Rad1 e4 {White should prevent ...exf3.} 18. Bd4 exf3 19. exf3 Bb7 20. Qb5 Bc6 21. Qe5 Rab8 22. Rd2 Rbd8 {[#] Threatens to win with ...Qxe5.} 23. Qxe6 fxe6 24. Rff2 Nd5 25. a3 {Accuracy: White = 72%, Black = 64%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.12"]
[Round "1.7"]
[White "Nakamura, Hikaru"]
[Black "Topalov, Veselin"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2754"]
[BlackElo "2740"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,77,10,11,14,24,9,14,12,10,11,15,11,13,-15,3,0,17,14,18,0,0,5,19,9,18,17,19,12,19,19,18,16,20,18,23,0,0,0,0,0,6,6,6,6,6,6,8,7,7,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4 Bb7 9. d3 d6 10. Nbd2 Nd7 11. c3 Nc5 12. axb5 axb5 13. Rxa8 Qxa8 14. Bc2 {C88: Closed Ruy Lopez: Anti-Marshall Systems} b4 15. d4 bxc3 16. bxc3 Nd7 17. Nf1 Bf6 18. d5 Ncb8 19. h4 {[#]} Qa1 $146 ({Predecessor:} 19... Nc5 20. Ng3 Bc8 21. Ng5 h6 {½-½ (38) Kasparov,G (2831)-Topalov,V (2735) Linares 2004}) 20. Re3 Nc5 21. c4 {[#] Ra3 is the strong threat.} Qa6 22. N1d2 Qb6 23. Ra3 Bc8 24. Nb3 Nba6 25. Nxc5 Nxc5 26. Qe1 Bg4 27. Nh2 Bd7 28. g3 Rb8 29. Nf3 h6 30. Be3 Qb2 {The position is equal.} 31. Qc3 Qxc3 32. Rxc3 Ra8 33. Bxc5 dxc5 34. Rb3 Bg4 35. Kg2 Bxf3+ 36. Kxf3 Be7 37. h5 Bd6 38. Bd1 g6 39. Kg2 {Accuracy: White = 65%, Black = 66%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.13"]
[Round "1.7"]
[White "Topalov, Veselin"]
[Black "Nakamura, Hikaru"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2740"]
[BlackElo "2754"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,50,23,8,20,25,19,14,22,24,22,22,22,16,10,22,16,23,35,25,32,37,36,42,36,5,16,12,25,0,0,-27,-12,-19,-22,-14,-25,-14,0,-8,-12,-17,-21]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. Nbd2 d5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} (6... a5 7. Nb3 Be7 8. a4 d5 9. exd5 Nxd5 10. O-O Bg4 11. h3 Bh5 12. Re1 Re8 13. Nbd2 Nb6 14. Bb5 {0-1 (65) Fedoseev,V (2702)-Wang,Y (2684) China 2019}) 7. exd5 Nxd5 8. Ne4 Be7 9. O-O Nb6 10. Bb3 Bf5 11. a4 a5 12. Re1 Qd7 13. Be3 Rad8 14. Bxb6 $146 ({Predecessor:} 14. Bc2) 14... cxb6 15. Bc4 Bg6 16. Qb3 Qc7 17. Re3 h6 18. Rae1 Kh8 19. Bd5 f6 $1 {[#] aiming for ...Rxd5!} 20. Bxc6 {Bb5 is the strong threat.} bxc6 21. d4 $1 Bf7 22. Qc2 $1 exd4 23. Nxd4 Rfe8 {The position is equal.} 24. Ng3 {[#] Black must now prevent Ne6.} Bd6 25. Rxe8+ Rxe8 {Accuracy: White = 60%, Black = 81%.} 1/2-1/2

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.12"]
[Round "1.8"]
[White "Vachier-Lagrave, Maxime"]
[Black "Navara, David"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "2775"]
[BlackElo "2734"]
[Annotator "TA"]
[PlyCount "37"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,37,22,14,10,12,40,23,14,0,36,39,38,33,37,36,106,5,107,110,107,106,195,202,353,355,337,332,331,314]} 1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. h3 Bxf3 5. Qxf3 Nf6 6. Be2 e6 {B11: Caro-Kann: Two Knights Variation} 7. O-O Bc5 8. Rd1 Bd4 {White has an edge.} 9. Qf4 e5 (9... Bxc3 $5 10. bxc3 (10. dxc3 Nxe4 11. Bd3 f5 $11) 10... Nxe4 $11) 10. Qg3 dxe4 $146 ({Predecessor:} 10... O-O 11. d3 Qd6 12. exd5 cxd5 13. Nb5 Qb6 14. Nxd4 exd4 {1-0 (64) Bacrot,E (2677)-Zelcic,R (2508) Zagreb 2018}) 11. d3 $36 {[%mdl 2048] White has some pressure.} exd3 12. Bxd3 Nbd7 ({Black should try} 12... O-O $14) 13. Ne2 (13. Qxg7 $16 Rg8 14. Qh6) 13... O-O {[#]} (13... Bb6 $11) 14. Bf5 $1 $16 ({Reject} 14. Nxd4 $6 exd4 15. Bf5 c5 $11) 14... Nc5 {[#] Strongly threatening ...Bxf2+!} 15. Bh6 $1 {[%csl Gh6][%cal Rg3g7][%mdl 512]} Nh5 (15... Ne6 $16) 16. Qg4 $18 {[%cal Re2d4][%mdl 64] Double Attack} Qd6 $2 (16... g6 {was worth a try.}) 17. Qxh5 Qxh6 18. Qxh6 gxh6 19. c3 {Accuracy: White = 57%, Black = 36%.} ({Weaker is} 19. Nxd4 exd4 20. Rxd4 Rae8 $14) 1-0

[Event "Grand Prix Riga 2019"]
[Site "Riga"]
[Date "2019.07.13"]
[Round "1.8"]
[White "Navara, David"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2734"]
[BlackElo "2775"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2019.07.10"]
[EventType "k.o."]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,92,20,25,13,13,-3,8,4,19,17,15,0,19,0,0,2,23,6,10,13,23,38,27,29,28,0,47,46,40,39,43,43,47,13,16,18,20,27,25,43,26,32,52,25,25,31,33,17,24,20,18,27,34,0,0,0,0,0,0,0,0,0,0,-16,-14,-13,-15,-34,-34,-115,-114,-129,-74,-64,-61,-55,-35,-41,-33,-64,0,-56,0,-48,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c3 Ngf6 5. Bd3 (5. Qe2 a6 6. Ba4 b5 7. Bc2 Bb7 8. d4 g6 9. O-O Bg7 10. e5 dxe5 11. dxe5 Bxf3 12. gxf3 Nd5 13. e6 N7f6 14. c4 bxc4 15. exf7+ Kxf7 {0-1 (31) Mamedov,R (2701)-Nepomniachtchi,I (2771) Astana 2019}) 5... e6 6. Bc2 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} b5 7. d4 Bb7 8. Qe2 {The position is equal.} a6 9. O-O Be7 10. Bf4 O-O 11. Nbd2 Rc8 $146 ({Predecessor:} 11... cxd4 12. cxd4 Rc8 13. Bd3 Nb6 14. h3 Rc7 15. Rfc1 Rxc1+ 16. Rxc1 Qa8 {1-0 (43) Markidis,K (2359)-Gallagher,D (2167) Paleochora 2016}) 12. Rac1 Re8 13. e5 Nd5 14. Bg3 $1 dxe5 15. dxe5 c4 16. Ne4 Nc5 17. h4 Nd3 18. Bxd3 cxd3 19. Qxd3 Nf4 20. Qe3 Qd3 {[#] Strongly threatening ...Ne2+.} 21. Rfe1 (21. Qxf4 {is more complex.} Qxe4 22. Qxe4 Bxe4 23. Nd4 b4 24. cxb4 Bxb4 25. Rfd1) 21... Qxe3 22. Rxe3 Nd3 23. Rb1 Bxe4 24. Rxe4 Red8 25. h5 Rd5 26. Kf1 b4 27. cxb4 Nxb4 28. a3 Nd3 29. Rd4 Rxd4 30. Nxd4 {Black should prevent Ke2.} Rc4 31. Nf3 Rc2 32. Rd1 Nxb2 33. Rd7 Rc1+ 34. Ne1 Kf8 35. Bf4 Rc8 36. h6 {Threatens to win with hxg7+.} g5 37. Be3 Nc4 38. Nf3 g4 39. Nh2 ({White should try} 39. Nd2 $15) 39... Nxe5 $17 40. Ra7 {[#]} Bc5 (40... a5 $142 $1 41. Rxa5 Nc4) 41. Bxc5+ Rxc5 42. Rxa6 {KRN-KRN} Rc1+ 43. Ke2 Rc2+ 44. Kf1 Rc1+ 45. Ke2 Rc2+ 46. Kf1 Rc1+ {Accuracy: White = 59%, Black = 60%.} 1/2-1/2

