[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.20"]
[Round "1.2"]
[White "Duda, Jan-Krzysztof"]
[Black "Nakamura, Hikaru"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2731"]
[BlackElo "2749"]
[Annotator "TA"]
[PlyCount "214"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,214,19,12,22,8,6,3,6,14,16,4,26,4,22,11,10,13,6,10,18,8,14,8,10,9,24,14,35,16,37,18,14,7,35,35,35,0,36,28,68,70,73,73,70,67,73,43,31,34,45,18,72,54,74,80,86,105,100,101,105,97,287,150,130,107,100,92,66,10,13,8,8,8,9,7,7,7,10,7,8,8,8,8,93,51,57,40,40,40,40,40,40,40,40,39,58,40,40,40,40,40,50,40,75,58,93,93,93,93,93,93,93,8,93,93,93,93,93,75,93,75,75,7,7,8,8,0,8,0,75,75,93,93,93,93,93,7,93,93,93,75,93,93,93,93,93,7,7,7,87,87,87,77,87,87,87,87,87,87,87,87,87,87,87,87,87,87,87,87,87,87,87,87,87,87,87,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. Re1 h6 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 8. Nbd2 (8. h3 a5 9. Nbd2 Be6 10. Bb5 Qb8 11. Nf1 Qa7 12. Be3 Bxe3 13. Nxe3 Ne7 14. a4 Ng6 15. Bc4 Bxc4 16. Nxc4 {1-0 (64) Karjakin,S (2753)-Svidler,P (2737) St Petersburg 2018}) 8... a5 9. a4 Ne7 10. Nf1 Ng6 11. Ng3 c6 12. Bb3 Re8 13. h3 d5 14. exd5 Nxd5 15. d4 exd4 16. Rxe8+ Qxe8 17. Bxd5 cxd5 18. Nxd4 Bd7 19. Be3 {[#]} Bf8 $146 ({Predecessor:} 19... b6 20. Ndf5 Bxf5 21. Nxf5 Qe4 22. Qg4 {½-½ (22) Cruzado Duenas,C (2563)-Straka,Z (2576) ICCF email 2017}) 20. Ndf5 Be6 21. Bd4 f6 22. Qf3 Qf7 23. Re1 Ra6 24. Nh5 Kh7 25. Qd3 {And now Nh4 would win.} Bd7 26. Nh4 {Hoping for Nf4.} f5 27. Nxg6 Rxg6 28. Nf4 Ra6 29. b3 g5 30. Ne2 Re6 31. Be3 Re8 (31... Kg8 $11 {keeps the balance.}) 32. Bb6 $16 Kg8 33. Rd1 Qe6 34. Qxd5 Qxd5 35. Rxd5 Rxe2 36. Rxd7 {[%mdl 4096] Endgame KRB-KRB} Re1+ (36... Rb2 $142) 37. Kh2 Rb1 38. Rd5 ({Don't play} 38. Bxa5 $6 Rxb3 39. Rd4 Bc5 $14) 38... Rxb3 {[#]} 39. Bd4 $1 b6 40. Rxf5 (40. g3 $14) 40... Bg7 $1 $11 41. Rd5 {next Rd8+ is good for White.} Bxd4 42. cxd4 {KR-KR} Rb4 43. Rd6 Kg7 44. d5 Rxa4 45. Rxb6 Rd4 46. d6 a4 47. Ra6 a3 (47... Kf6 $11) 48. Kg3 a2 49. d7 Rxd7 50. Rxa2 Rd4 51. Ra7+ Kg6 52. Ra6+ Kg7 53. Re6 Ra4 54. Kf3 Rf4+ 55. Ke3 Ra4 56. g3 Rb4 57. Kf3 Ra4 58. Re4 Ra2 59. h4 gxh4 60. Rxh4 Kg6 61. Re4 h5 62. Ke3 (62. Rd4 $16) 62... Rb2 (62... Kg5 $1 $11) 63. Ra4 Rb6 64. Kf3 Rb2 65. Kg2 Rc2 66. Rf4 Ra2 67. Kh3 (67. Rh4 $16) 67... Rb2 68. Rf8 Kg7 69. Rf4 Kg6 70. Kg2 (70. Kh2 $11) 70... Ra2 $1 $16 71. Rb4 Rc2 72. Kf3 Ra2 73. Ke3 Ra6 74. Rb5 (74. Re4 $16) 74... Re6+ (74... Ra4 $11) 75. Kf3 Ra6 76. Re5 Rb6 77. Kf4 Rf6+ 78. Ke3 Ra6 79. f4 (79. f3 $16) 79... Ra3+ $11 80. Kf2 Ra2+ (80... h4 $11 {remains equal.}) 81. Kf3 $16 Ra3+ 82. Kg2 Ra1 83. Rg5+ Kh6 84. Rg8 Kh7 85. Rb8 Kg6 86. Rb6+ Kg7 87. Re6 Kh7 88. Kf3 Rf1+ {[#]} 89. Ke2 $1 {[%cal Re2f1]} Rg1 90. Kf2 Ra1 91. Re1 Ra2+ 92. Kf3 Kg6 93. Re6+ Kg7 94. f5 (94. Re2 $16 Ra6 95. Re5 Ra3+ 96. Kg2) 94... Ra4 $11 {The position is equal.} 95. Rg6+ Kh7 $1 96. Rg5 Kh6 97. Rg6+ Kh7 98. Re6 Kg7 99. Re4 Ra6 100. Rh4 Ra3+ 101. Kf4 Kh6 102. g4 Ra4+ 103. Ke5 {White wants to mate with g5+!} (103. Kg3 {seems wilder.} Rxg4+ 104. Rxg4 hxg4 105. f6 Kg6 106. Kxg4 Kf7 107. Kf5) 103... Rxg4 104. Rxg4 hxg4 105. Kf4 g3 {( -> ...g2)} 106. Kxg3 Kg5 107. f6 Kxf6 {Accuracy: White = 53%, Black = 55%.} 1/2-1/2

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.20"]
[Round "2.2"]
[White "Nakamura, Hikaru"]
[Black "Duda, Jan-Krzysztof"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2749"]
[BlackElo "2731"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,103,19,6,15,7,14,4,0,0,9,9,6,6,16,0,40,30,55,64,49,50,56,42,49,37,41,30,40,30,29,24,41,24,56,45,61,60,78,69,64,70,57,83,68,37,47,38,113,126,136,124,125,140,119,102,532,418,418,306,310,283,4133,968,967,719,821,868,750,881,654,856,824,599,592,591,29978,29979,29985,29986,29986,29987]} 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 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 Bg4 (9... cxd5 10. Bg5 c6 11. Qf3 Bd6 12. h3 h6 13. Bf4 Rb8 14. b3 Rb4 15. Bxd6 Qxd6 16. Rfe1 a5 17. Rad1 Bd7 18. Qe3 Rc8 19. Qa7 Rh4 20. Re3 Qc7 21. Qxc7 Rxc7 {½-½ (57) Carlsen,M (2839)-Ding,L (2804) Porto Carras 2018}) 10. f3 Bh5 11. dxc6 Qd4+ 12. Kh1 Bxc3 13. bxc3 {LiveBook: 4 Games} Qxc3 14. Rb1 Bg6 {[#]} 15. Rb3 $146 ({Predecessor:} 15. Bb2 Qxc6 16. Bxf6 Qxf6 17. Bxg6 hxg6 {½-½ (26) Wei,Y (2734)-Vidit,S (2707) Liaocheng 2018}) 15... Qxc6 16. Bb2 Rad8 17. Qa1 Bxd3 18. cxd3 Rfe8 19. Rc1 Qe6 (19... Qd6 {with more complications.} 20. Bxf6 gxf6 21. Qb2 Re3 22. Qf2 Rxd3 23. Rxd3 Qxd3 24. h3 Qd6) 20. Bxf6 Qxf6 21. Qxf6 gxf6 $14 {[%mdl 4096] Endgame KRR-KRR} 22. h3 Rd7 23. Rc2 Re5 24. Kg1 Red5 25. Rcc3 Kg7 26. Kf2 c5 27. Ra3 f5 28. Ra4 Rxd3 29. Rxc5 Rd2+ 30. Kg3 f4+ 31. Rxf4 Rxa2 32. Rg4+ Kf8 33. Rc8+ Ke7 34. Rh8 a5 35. Rxh7 Ra7 (35... Rdd2 $1 $14) 36. Rf4 $16 Kf8 37. h4 $1 a4 {[#]} 38. h5 $1 {[%cal Rh5h6] h6 is the strong threat.} Kg8 39. Rh6 {And now Rg4+ would win.} a3 $2 {[%mdl 8192] [#]} (39... Kf8 $16 {is more resistant.}) 40. Rg4+ $1 $18 Kf8 41. Rh8+ Ke7 {With the idea ...Re2.} 42. h6 Ra1 $2 (42... Ra6 43. Re4+ Kd7) 43. h7 (43. Re4+ $142 Kd6 44. Rh4) 43... Rh1 44. Rh4 Rxh4 45. Kxh4 {White wants to mate with Rb8. KR-KR} Ra4+ 46. g4 {Rc8 would kill now.} a2 {[#]} 47. Re8+ $1 {[%mdl 512]} Kxe8 48. h8=Q+ Kd7 49. Qa1 {White threatens Qd1+ and mate.} Ra3 50. Qd4+ {White mates.} Ke8 51. Qe5+ Kd7 52. Qd5+ {Precision: White = 43%, Black = 37%.} 1-0

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.20"]
[Round "3.2"]
[White "Duda, Jan-Krzysztof"]
[Black "Nakamura, Hikaru"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2731"]
[BlackElo "2749"]
[Annotator "TA"]
[PlyCount "155"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,155,21,27,20,8,14,0,0,22,0,0,0,-7,-8,7,0,47,32,63,56,64,36,50,21,15,5,41,40,108,88,85,93,100,61,60,59,60,41,56,43,53,35,79,17,40,27,35,37,39,42,16,0,69,69,69,69,643,643,643,624,1472,1411,2065,2065,1339,1154,1009,287,279,314,310,312,305,294,279,0,160,0,273,270,270,209,297,311,311,310,271,296,310,310,278,265,354,346,389,389,355,357,417,395,585,565,610,647,643,647,646,639,624,597,593,608,916,621,788,0,862,767,800,787,937,608,591,576,591,561,562,560,910,892,5209,5061,5289,720,703,679,575,509,29977,29978]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. Bg5 h6 8. Bh4 a6 9. a4 Ba7 10. Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} g5 11. Bg3 g4 (11... Nh7 12. h3 h5 13. d4 h4 14. Bh2 g4 15. hxg4 Bxg4 16. dxe5 dxe5 {1-0 (45) Duda,J (2738)-Kramnik,V (2777) Wijk aan Zee 2019}) 12. Bh4 {The position is equal.} Kg7 13. Re1 $146 ({Predecessor:} 13. Kh1 gxf3 14. Qxf3 Nb8 {1-0 (25) Demchenko,A (2589)-Howell,D (2671) Gjakova 2016}) 13... Ne7 {...Ng6 is the strong threat.} 14. Bxf6+ $1 Kxf6 15. Nh4 Kg7 $132 {[%mdl 2048] Black is fighting back} 16. Nf1 $1 Ng8 17. g3 Qf6 18. Ne3 Bxe3 19. Rxe3 (19. fxe3 {feels hotter.} Qg5 20. d4 Ne7 21. Qd3 f5 22. Rf1) 19... Ne7 20. d4 Ng6 21. Ng2 Qg5 22. Qb3 b6 (22... Qf6 $14) 23. Bd5 Rb8 24. Rf1 Ne7 25. Bc4 Bb7 26. Nh4 b5 27. axb5 axb5 28. Bd3 Bc8 $1 29. dxe5 Qxe5 30. Nf5+ (30. Qd1 $16) 30... Nxf5 $11 31. exf5 Qf6 32. Qd1 Bxf5 33. Bxf5 Qxf5 34. Qd4+ Kh7 (34... f6 $11) 35. f3 $14 gxf3 36. Rexf3 Qg6 $2 {[%mdl 8192]} (36... Qc5 $14) 37. Rf6 $18 Qg7 {[#]} 38. R1f4 $1 c5 39. Qd5 Qg5 40. Rxf7+ Rxf7 41. Rxf7+ {[%mdl 4096] Endgame KQR-KQR} Kh8 42. Qxd6 $2 (42. Qd3 {[%csl Gf7][%cal Rd3h7]} Qg8 43. Qf5 Qxf7 44. Qxf7) 42... Re8 43. Rf8+ Rxf8 44. Qxf8+ {KQ-KQ} Kh7 45. Qf7+ Kh8 46. Qf8+ ({White should try} 46. Qe8+ $18 Kg7 47. Qd7+ (47. Qxb5 Qe3+ 48. Kg2 Qd2+ 49. Kg1 Qe3+ 50. Kg2 Qd2+ 51. Kh3 Qd5 $18) 47... Kg8 48. Qxb5) 46... Kh7 $16 {[#]} 47. Qf7+ (47. Qf4 $1 $16) 47... Kh8 $18 48. Qe8+ Kg7 {intending ...Qc1+.} 49. Qd7+ Kh8 (49... Kg6 $142 50. Qxb5 Qe3+ 51. Kg2 Qd2+ 52. Kh3 Qd5 53. Qe8+ Kh7 54. Qe7+ Kg6 55. Qe8+ Kh7) 50. Qxb5 Qe3+ 51. Kg2 Qe4+ 52. Kf2 Qf5+ 53. Ke3 Qe5+ 54. Kd2 Qg5+ 55. Kc2 Qf5+ 56. Kb3 Qd5+ 57. Qc4 Qh5 58. h4 Qe5 (58... Qd1+ $142 59. Ka3 Qd6) 59. Qf4 Qe6+ 60. c4 Qb6+ 61. Kc2 Qg6+ 62. Kc1 Qc6 63. b3 Kg7 64. Qe5+ Kh7 65. Qf5+ Kg7 66. Qe5+ Kh7 $1 67. Kd2 Qg2+ 68. Qe2 Qg1 69. Qd3+ Kg7 70. Qe3 Qg2+ 71. Kc3 Qc6 72. Qe5+ Kh7 73. Qf5+ Kg7 74. h5 Kh8 75. g4 (75. Qf8+ $142 Kh7 76. g4) 75... Qd6 76. Qe4 Qf6+ 77. Kc2 Qd6 (77... Qf2+ $18 78. Kd3 Qg3+ 79. Ke2 Qd6) 78. Qe8+ {Accuracy: White = 59%, Black = 50%.} 1-0

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.20"]
[Round "4.2"]
[White "Nakamura, Hikaru"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "C27"]
[WhiteElo "2749"]
[BlackElo "2731"]
[Annotator "TA"]
[PlyCount "167"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,167,0,0,-2,-1,-5,0,-3,-7,-26,-14,-49,-29,-52,10,0,9,27,18,0,62,62,62,31,37,31,56,10,7,0,-6,-18,0,0,19,14,21,0,8,8,17,10,10,10,18,6,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-35,-36,-36,-33,-40,-20,-69,-56,-71,-79,-83,-77,-67,-70,-134,-68,-102,-14,-104,-23,-21,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-89,-8,-8,-8,-8,-8,-8,0,-8,-8,-8,-8,-8,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 {[%cal Be4d6,Bd6e8,Be8f6][%mdl 32]} 5. Bb3 Be7 6. Qxe5 O-O {LiveBook: 33 Games. C27: Vienna Game: 2...Nf6 3 Bc4 Nxe4} 7. Qf4 (7. Nf3 Nc6 8. Qf4 Na5 9. O-O Nxb3 10. axb3 b6 11. Nd5 Re8 12. d3 Bf8 13. Qg4 f6 14. Bd2 {0-1 (51) Forcen Esteban,D (2569)-Rakhmanov,A (2629) Linares 2018}) 7... Ne8 8. d4 Nc6 9. a3 $146 ({Predecessor:} 9. Nge2 Na5 10. d5 c5 11. dxc6 dxc6 12. O-O Bd6 13. Qf3 Qc7 14. h3 {½-½ (51) Gather,J (2473)-Kratochvil,M (2491) ICCF corr 1999}) 9... Nf6 10. d5 Bd6 11. Qa4 Re8+ (11... b5 $5 12. Nxb5 Re8+ 13. Ne2 Re4 $11) 12. Nge2 {[#]} Ne5 (12... b5 $1 $15 {[%mdl 512]} 13. Qh4 (13. Qxb5 Nd4) 13... Ne7) 13. Bg5 h6 14. Bxf6 Qxf6 15. O-O Qg6 (15... b5 $11 16. Qd4 Bf8) 16. Ng3 $1 $14 c6 17. Rfe1 b5 18. Qe4 Bb7 19. dxc6 Bxc6 20. Bd5 Qxe4 21. Ngxe4 Bc7 22. b3 a6 23. Rad1 Rad8 24. h3 Ng6 25. g3 Kf8 26. Kg2 Ne7 27. Bxc6 dxc6 28. Nc5 a5 29. N3e4 Rxd1 30. Rxd1 Nd5 31. c4 bxc4 32. bxc4 Nb6 33. Rc1 f5 34. Nd2 Bd6 35. Nd3 {And now c5 would win.} Bxa3 36. Ra1 $1 {[%cal Ra1a3]} Bb4 37. Nxb4 axb4 $11 {[%mdl 4096] Endgame KRN-KRN} 38. Ra6 Rb8 39. Nb3 Nxc4 40. Rxc6 Na3 41. h4 Rb5 42. Rc8+ Kf7 43. Rc7+ Kf6 44. h5 Rd5 45. Rb7 Nc2 46. Kf1 {[#]} (46. Nc1 $15) 46... Re5 ({Better is} 46... f4 $1 $17 {[%mdl 512]} 47. gxf4 Rxh5) 47. Rc7 Re1+ 48. Kg2 {[#]} Na1 (48... Rb1 $1 $17 49. Nd2 Rb2) 49. Nc5 b3 50. Rb7 Rb1 51. f4 Rb2+ 52. Kh3 Rb1 53. Kg2 b2 {Threatens to win with ...Nc2.} 54. Nd3 Nc2 55. Rxb2 Ne3+ 56. Kf3 Rxb2 57. Nxb2 {KN-KN} Ng4 58. Nd3 Ke6 59. Nc5+ Kd6 60. Nb3 {Strongly threatening Nd4.} Kd5 61. Nd2 (61. Na1 $11) 61... Nf6 $17 62. Nf1 {[#]} Ke6 $1 63. Ne3 Nxh5 64. g4 fxg4+ 65. Kxg4 Nf6+ 66. Kf3 Nd5 {aiming for ...Nxe3.} 67. Nc2 Ne7 68. Nd4+ Kd5 69. Ne2 Nf5 70. Nc3+ Kd4 71. Nb5+ Kd3 (71... Kc5 $17 72. Nc7 Kd6 73. Nb5+ Kc5) 72. Nc7 $11 {The position is equal.} h5 73. Ne8 Kd4 74. Nc7 Kd3 {Hoping for ...Nd4+.} 75. Ne8 g6 76. Nf6 Kd4 77. Nd7 Nh4+ 78. Kg3 Nf5+ 79. Kf3 Ne7 80. Nf6 Nc6 {[#]} 81. Nxh5 $1 {[%mdl 512]} gxh5 82. Kg3 Ke4 {...Kf5 is the strong threat.} 83. Kh4 Kxf4 84. Kxh5 {Precision: White = 60%, Black = 59%.} 1/2-1/2

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.21"]
[Round "5.2"]
[White "Duda, Jan-Krzysztof"]
[Black "Nakamura, Hikaru"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2731"]
[BlackElo "2749"]
[Annotator "RC"]
[PlyCount "67"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "900+10"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. Bc4 {[%emt 0:00:00]} Bc5 {[%emt 0:00:00]} 4. c3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. d3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 6. O-O {[%emt 0:00:01]} O-O {[%emt 0:00:00]} 7. Bg5 {[%emt 0:00:10]} h6 {[%emt 0:00:00]} 8. Bh4 {[%emt 0:00:02]} a6 {[%emt 0:00:00]} 9. a4 {[%emt 0:00:01]} g5 {[%emt 0:00:00]} 10. Bg3 {[%emt 0:00:02]} Ba7 {[%emt 0:00:01]} 11. Nbd2 {[%emt 0:00:02]} Kg7 {[%emt 0:00:01]} 12. Re1 {[%emt 0:00:10]} Nh7 {[%emt 0:00:10]} 13. d4 {[%emt 0:00:15]} h5 {[%emt 0:00:08]} 14. h3 g4 {[%emt 0:00:04]} 15. Bh4 {[%emt 0:03:23]} f6 {[%emt 0:00:02]} 16. hxg4 {[%emt 0:01:37]} hxg4 {[%emt 0:00:08]} 17. Nh2 {[%emt 0:00:03]} Ng5 {[%emt 0:00:05]} 18. Be2 {[%emt 0:02:14]} Rh8 {[%emt 0:00:18]} 19. Bxg5 {[%emt 0:01:34]} fxg5 {[%emt 0:00:02]} 20. Bxg4 {[%emt 0:00:02]} exd4 {[%emt 0:00:01]} 21. Ndf3 {[%emt 0:00:02]} dxc3 {[%emt 0:03:37]} 22. bxc3 {[%emt 0:00:02]} Qf6 {[%emt 0:01:00]} 23. Qd2 {[%emt 0:01:40]} Rxh2 {[%emt 0:01:52]} 24. Nxh2 {[%emt 0:01:04]} Ne5 {[%emt 0:00:01]} 25. Bxc8 {[%emt 0:01:47]} Rxc8 {[%emt 0:00:01]} 26. Rab1 {[%emt 0:00:04]} Rh8 {[%emt 0:06:58]} 27. Rxb7 {[%emt 0:00:21]} Rxh2 {[%emt 0:00:08]} 28. Rxc7+ {[%emt 0:00:31]} Kg6 {[%emt 0:00:01]} 29. Rxa7 {[%emt 0:01:07]} Rxg2+ {[%emt 0:00:11]} 30. Kxg2 {[%emt 0:00:11]} Qf3+ {[%emt 0:00:02]} 31. Kf1 {[%emt 0:00:45]} Qh3+ {[%emt 0:00:02]} 32. Ke2 {[%emt 0:00:02]} Qf3+ {[%emt 0:00:01]} 33. Kf1 {[%emt 0:00:01]} Qh3+ {[%emt 0:00:02]} 34. Ke2 {[%emt 0:00:01]} 1/2-1/2

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.21"]
[Round "6.2"]
[White "Nakamura, Hikaru"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2749"]
[BlackElo "2731"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,118,0,0,-9,-4,-22,34,21,25,26,29,19,58,38,25,0,11,-7,-4,-10,25,-70,0,0,0,0,0,19,38,41,68,71,55,0,0,0,0,-49,0,-27,-21,-41,-31,-37,-35,-37,-37,-70,-7,-5,-5,-45,-43,-37,-41,-56,-11,-8,-6,-6,-6,-4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-7,-7,-7,-7,-7,-7,-7,-7,-7,0,0,0,-7,-8,-8,0,-7,-7,-7,-7,-7,0,0,0,0,0]} 1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 dxc4 5. e4 Bb4 6. Bxc4 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3} Nxe4 7. O-O Nxc3 8. bxc3 Bd6 9. Re1 O-O {LiveBook: 5 Games} 10. Ne5 $146 ({Predecessor:} 10. Qd3 Nd7 11. Ne5 Bxe5 12. dxe5 Nb6 13. Qg3 Nxc4 {1-0 (29) Topalov,V (2760)-Caruana,F (2823) Saint Louis 2016}) 10... Nd7 11. Qg4 Nf6 (11... Nxe5 $11 12. dxe5 f5) 12. Qg3 $14 {[%mdl 1024] White has compensation.} Nh5 13. Qh3 g6 $1 14. Bh6 Re8 15. g4 Ng7 $1 16. Re3 (16. Bd3 {is more complex.} Bd7 17. Rab1 Rb8 18. Qf3 f5 19. Qf4) 16... f6 17. Nf3 Bd7 18. Rae1 Qe7 (18... b5 {with more complications.} 19. Bb3 a5 20. g5 a4 21. Bxg7 Kxg7 22. Qh6+ Kg8) 19. Nh4 (19. g5 $11) 19... Qf7 (19... b5 $15 20. Bd5 c6) 20. f4 $11 b5 21. Bb3 $1 c5 22. f5 $1 c4 ({Wrong is} 22... gxf5 $2 23. Nxf5 $1 {[%mdl 512]} Bf8 24. Bxg7 $18) 23. fxg6 hxg6 24. Bc2 f5 25. Nf3 (25. Qg2 $1 $14) 25... fxg4 $1 26. Qxg4 Nf5 $36 {[%mdl 2048] Black has some pressure.} 27. Bxf5 Qxf5 (27... exf5 {is interesting.} 28. Qh4 Rxe3 29. Rxe3 Re8 30. Ne5 Bxe5 31. Rxe5 Rxe5 32. dxe5 a5) 28. Qxf5 (28. Qh4 {looks sharper.} e5 29. Nxe5 Rxe5 30. Rxe5 Bxe5 31. Rxe5 Qb1+ 32. Re1) 28... gxf5 29. Ne5 Bxe5 30. Rxe5 Kf7 31. Bg5 a5 {And now ...b4 would win.} 32. a3 {[#]} Reb8 ({Black should try} 32... b4 $1 $15 {[%mdl 512]} 33. Rc5 (33. axb4 axb4) 33... Kg6) 33. d5 {[%cal Rd5e6]} Ra6 34. Bf4 b4 35. dxe6+ Bxe6 36. Rc5 Rg8+ 37. Kf2 {The position is equal.} Rg4 38. Rc7+ Kg6 39. Be5 Bd5 {aiming for ...b3.} 40. Rg7+ Kh5 41. Rxg4 Kxg4 {[%mdl 4096] Endgame KRB-KRB} 42. Rg1+ Kh5 43. cxb4 axb4 44. axb4 Ra3 45. Rg3 Ra2+ 46. Ke3 Rxh2 47. Rg5+ Kxg5 48. Bxh2 {KB-KB} Bc6 49. Bd6 Kg4 50. Bc7 Bb5 51. Be5 Ba4 52. Kd4 Bb5 53. Ke3 $1 Ba6 54. Bd6 $1 Kh5 55. Bf4 Bb5 56. Bd6 Kg5 57. Bf4+ Kg4 58. Be5 Bd7 59. Kd4 Bb5 {Precision: White = 63%, Black = 64%.} 1/2-1/2

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.21"]
[Round "7.2"]
[White "Duda, Jan-Krzysztof"]
[Black "Nakamura, Hikaru"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2731"]
[BlackElo "2749"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,70,8,11,22,15,23,12,6,-18,12,0,0,0,0,0,0,5,10,-7,0,-12,-17,-37,-39,-64,-38,-58,-6,-27,-22,-164,19,-222,-235,-520,-519,-481,-526,-1233,-1233,-1249,-1240,-2299,-2267,-2967,-2729,-2393,-791,-716,-550,-663,-654,-29984,-29985,-29985,-29986,-29994,-29995]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. Bg5 h6 8. Bh4 a6 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 9. a4 g5 10. Bg3 Ba7 {The position is equal.} 11. Nbd2 Kg7 (11... Nh7 12. h3 h5 13. d4 h4 14. Bh2 g4 15. hxg4 Bxg4 16. dxe5 dxe5 {1-0 (45) Duda,J (2738)-Kramnik,V (2777) Wijk aan Zee 2019}) 12. Re1 Nh7 13. h3 h5 14. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} h4 $146 {[%mdl 2048] White is under pressure.} ({Predecessor:} 14... g4 15. Nh4 Qf6 16. b5 {½-½ (43) De Homont,R (2323)-Ludwig,C (2353) ICCF email 2016}) 15. Bh2 g4 16. hxg4 Nf6 17. g5 (17. b5 $5 {[%cal Rb5c6]} Nxg4 18. bxc6 Nxf2 19. Qe2 Nxd3+ 20. Kf1 Nxe1 21. cxb7 Bxb7 22. Kxe1 $11) 17... Ng4 18. Re2 f6 19. b5 (19. Nxh4 $2 Nxh2 20. Nf5+ Bxf5 $17) 19... Ne7 20. gxf6+ ({Avoid the trap} 20. Nxh4 $2 Nxh2 21. gxf6+ (21. Kxh2 $2 fxg5 22. bxa6 gxh4 $19) 21... Rxf6 $19) 20... Rxf6 21. d4 Ng6 22. Nf1 (22. Bd5 $11 {and White is okay.}) 22... Nxh2 $2 (22... h3 $1 $19 {[%cal Rh3g2] White must now prevent ...hxg2.} 23. Ne1 (23. gxh3 Rxf3 24. hxg4 Bxg4 $19) 23... hxg2 24. Nxg2 Bd7 25. bxa6 bxa6) 23. Kxh2 $2 {[#]} (23. N1xh2 $11 Nf4 24. Nxh4) 23... h3 $1 $19 {[%cal Rh3g2]} ({Stronger than} 23... Rxf3 24. gxf3 exd4 25. cxd4 $16) 24. dxe5 $2 (24. Re3 {was worth a try.} hxg2 25. Kxg2) 24... Rf8 ({Not} 24... Rxf3 25. gxf3 Qg5 26. Ng3 $14) 25. Ng3 {e6 is the strong threat.} hxg2 26. Nf5+ Bxf5 27. exf5 Rxf5 {[%mdl 64] Double Attack} 28. Kxg2 Rxf3 29. Kxf3 Qh4 {( -> ...Rf8+)} 30. Bf7 Nxe5+ (30... Qh3+ $142 31. Ke4 {[#]} d5+ $1 {[%mdl 512]} 32. Qxd5 Qg4+ {[%mdl 64] Double Attack} 33. Kd3 Nf4+ {[%mdl 64] Double Attack} 34. Kc2 Nxd5) 31. Rxe5 Qxf2+ 32. Kg4 dxe5 33. Bh5 Rf8 {Black mates.} 34. Qd7+ Kh6 35. Kh3 Qe3+ {[%mdl 64] Double Attack. Accuracy: White = 18%, Black = 66%.} 0-1

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.21"]
[Round "8.2"]
[White "Nakamura, Hikaru"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2749"]
[BlackElo "2731"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,120,17,24,29,29,27,29,25,38,13,5,14,0,0,28,21,14,0,4,-8,-2,-25,-24,-23,-16,-27,0,0,5,0,-7,0,0,-4,-9,0,-5,-12,-6,-10,-9,-20,-8,-3,29,23,64,0,0,0,5,0,0,0,0,-18,-22,-33,-19,-14,-12,-18,-15,-20,-10,-27,-13,-23,0,-3,0,0,0,-16,-16,-16,-16,-16,-18,-20,-15,-14,-14,-18,0,0,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,0,0,0,8,0,0,0,0,0,0,0,0]} 1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. cxd5 exd5 5. Bf4 Nf6 6. e3 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6} O-O 7. Bd3 c5 8. Nge2 {White has an edge.} Bg4 9. O-O cxd4 10. exd4 Nc6 11. f3 Bh5 12. a3 Be7 13. Rc1 {[#]} (13. Bb1 {is more complex.} Bg6 14. Ba2 Na5 15. Re1 Re8 16. Bg3) 13... Bg6 $146 ({Predecessor:} 13... Rc8) 14. Bxg6 hxg6 15. Na4 Rc8 16. b4 Nh5 17. Be3 Bg5 18. f4 Bh4 19. f5 Ne7 20. fxg6 Nxg6 21. Rxc8 Qxc8 22. Qd3 Re8 23. Nac3 Qe6 24. Bd2 Bd8 25. Qf5 Nf6 26. Bg5 Qxf5 27. Rxf5 Ne7 $1 {[%cal Re7f5]} 28. Rf2 ({White should try} 28. Re5 $14) 28... Ne4 $11 29. Bxe7 {[#] Threatens to win with Nxe4.} Bxe7 30. Rf5 Nxc3 31. Nxc3 {[%mdl 4096] Endgame KRB-KRN} Bf6 32. Nxd5 Bxd4+ 33. Kf1 f6 34. Rf3 Rd8 35. Ne3 Kf7 36. Ke2 b5 37. h4 Bb2 38. Nd1 Bd4 39. Rd3 {The position is equal.} Ke6 40. Nc3 a6 41. a4 bxa4 42. Nxa4 Kd5 43. Nb6+ Kc6 44. Nc4 Kb5 45. Ne3 $1 Kxb4 46. Nf5 Kc4 47. Ra3 g6 48. Nxd4 Rxd4 49. Rxa6 {Black should prevent g3. KR-KR} Kd5 50. Rxf6 {[#] Black must now prevent g3.} Ke5 51. Rxg6 Rxh4 52. Kf3 Rf4+ 53. Kg3 {Intending Rg5+ and mate.} Ra4 54. Rg4 Ra8 55. Rf4 Rg8+ 56. Rg4 Ra8 57. Rf4 Rg8+ 58. Kf3 Rxg2 59. Re4+ Kd5 60. Kxg2 {Threatening mate with Kf3.} Kxe4 {Accuracy: White = 57%, Black = 69%.} 1/2-1/2

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.22"]
[Round "9.2"]
[White "Duda, Jan-Krzysztof"]
[Black "Nakamura, Hikaru"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2731"]
[BlackElo "2749"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,87,12,26,0,0,0,9,8,19,-20,10,-60,-68,-73,-75,-156,-146,-167,-106,-90,-113,-131,0,0,0,0,56,60,254,260,341,350,335,336,348,332,408,391,447,446,445,441,446,436,441,433,554,553,541,540,540,522,520,414,593,585,576,574,545,381,512,0,543,527,592,585,634,605,589,605,704,602,718,697,29976,29977,5110,658,29996,29997]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 d5 6. exd5 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5} (6. Nbd2 dxe4 7. dxe4 O-O 8. O-O Qe7 9. b4 Bd6 10. a3 a5 11. Rb1 axb4 12. axb4 Be6 13. Re1 Rfd8 14. Qc2 h6 15. Bf1 Ra2 16. Bb2 Qe8 {½-½ (56) Carlsen,M (2835)-Kramnik,V (2777) Wijk aan Zee 2019}) 6... Qxd5 {aiming for ...Bxf2+!} 7. Bc4 Qd6 8. O-O {The position is equal.} Bb6 $146 ({Predecessor:} 8... O-O 9. b4 Bb6 10. Nbd2 Bf5 11. Qe2 a6 12. a4 Rfe8 13. Ng5 {1-0 (52) Wang,H (2730)-Piorun,K (2634) St Petersburg 2018}) 9. b3 Bg4 10. Ba3 ({Better is} 10. Nbd2 $11) 10... Qd7 $1 $15 11. Nbd2 O-O-O 12. Qc2 (12. Ne4 $142) 12... Rhe8 $17 13. Rae1 Nh5 (13... Nd5 $1 $19 14. Bb5 Qf5) 14. Ng5 Nf4 15. Nxf7 Bh5 (15... Bh3 $1 $17 {[%cal Rh3g2]} 16. g3 (16. Nxd8 $2 Bxg2 17. Qd1 Rxd8 $19) 16... Bxf1 17. Rxf1 Nh3+ 18. Kg2 Nxf2 $1 {[%mdl 512]} 19. Rxf2 Bxf2 20. Nxd8 (20. Kxf2 b5 $15) 20... Nxd8 21. Kxf2 b5) 16. Nxd8 $11 Qg4 {[%csl Gf4][%cal Rg4g2]} 17. Bd5 {Threatens to win with Bf3.} Rxd8 (17... e4 $11 18. g3 Nh3+ 19. Kg2 Nf4+ 20. Kg1 Nh3+ 21. Kg2 Nf4+ 22. Kg1) 18. Bf3 Qg6 $2 (18... Qg5 $1 $14 19. Be4 (19. Ne4 Qg6 $17) 19... Bg6) 19. Be4 $18 Qg4 {[#]} 20. Nc4 $1 Bg6 {Strongly threatening ...Bxe4.} 21. Nxb6+ axb6 22. f3 Qg5 23. Bc1 Qh5 24. Bxf4 exf4 25. d4 Ne7 26. Qc1 Qg5 27. Qa3 Bxe4 28. Rxe4 Nf5 29. Qa8+ Kd7 30. Qa4+ Kc8 31. Re8 Kb8 (31... Ne3 $142 32. Qa8+ Kd7 33. Rxd8+ Qxd8 34. Qxd8+ Kxd8) 32. Qd7 Rxe8 33. Qxe8+ {[%mdl 4096] Endgame KQR-KQN} Ka7 34. Qa4+ Kb8 35. Qe8+ Ka7 36. Qe5 g6 37. a4 {[%cal Ba2a4,Ba4a5,Ba5a6,Ba6a7][%mdl 32]} Kb8 38. Ra1 Qd8 39. a5 b5 40. Qxb5 Qe7 41. a6 {[%csl Ga6][%cal Rb5b7]} Qe3+ 42. Kh1 {[%csl Ga6][%cal Rb5b7]} Nd6 43. Qe5 Qxc3 44. a7+ {Accuracy: White = 51%, Black = 47%.} 1-0

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.19"]
[Round "10.2"]
[White "Nakamura, Hikaru"]
[Black "Duda, Jan-Krzysztof"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "2749"]
[BlackElo "2731"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,65,20,19,16,33,37,25,36,40,23,17,14,72,47,104,101,101,77,76,67,68,75,83,60,64,72,78,83,105,107,93,80,91,62,66,62,76,35,38,37,63,63,68,56,77,14,98,99,195,81,264,271,386,247,394,390,1258,1186]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 Nc6 5. Nxe5 Nxe5 6. dxe5 {C43: Petroff Defence: 3 d4} (6. Bxe4) 6... d5 7. exd6 Nxd6 8. O-O {White has an edge.} Be7 9. Nc3 O-O 10. Nd5 $146 ({Predecessor:} 10. Bf4 Bd7 11. Qf3 {½-½ (59) Staib,C-Bonitz,R Waldshut 2002}) 10... Bf5 (10... Re8 $11) 11. Bf4 $16 Bg6 (11... Bxd3 $14 12. Qxd3 Re8) 12. c4 $1 b6 13. Re1 Re8 14. Bxg6 hxg6 15. Qa4 Bf6 16. Qc6 Bxb2 17. Rad1 Ba3 {[#]} 18. Ne7+ $1 {[%mdl 512]} Kf8 (18... Rxe7 19. Rxe7) 19. Bg5 f6 20. Nxg6+ {[%cal Be7g6,Bg6f4,Bf4d5][%mdl 32]} Kg8 21. Be3 Bb4 22. Rf1 Qc8 $1 23. Nf4 {And now Nd5 would win.} Nf7 24. c5 $36 {[%mdl 2048] Nd5 is the strong threat. White has good play.} Bxc5 25. Bxc5 bxc5 26. Nd5 Re5 27. Qxc5 ({Much weaker is} 27. Nxc7 Rb8 $11) ({White should play} 27. f4 $16 Re6 28. Qxc5) 27... Qg4 (27... Qe6 $1 $11 {keeps the balance.}) 28. Qxc7 Ng5 {[#]} (28... Qe6 $16) 29. Rd3 ({Don't go for} 29. Ne7+ $2 {[#]} Rxe7 $1 {[%mdl 512]} 30. Qg3 Qe2 $19) (29. f3 $1 $18 {[%cal Rf3g4] has better winning chances.} Qe6 30. Qb7) 29... Rxd5 $2 (29... Rae8 $16) 30. Rxd5 $18 Nh3+ 31. Kh1 Nf4 (31... Qe2 $142 32. Qc1 Nxf2+ 33. Kg1 Ng4) 32. Rd8+ {[%mdl 64] Double Attack} Kh7 $2 (32... Rxd8 33. Qxd8+ Kh7) 33. Qc2+ {Accuracy: White = 65%, Black = 40%.} 1-0

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.19"]
[Round "11.2"]
[White "Duda, Jan-Krzysztof"]
[Black "Nakamura, Hikaru"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2731"]
[BlackElo "2749"]
[Annotator "TA"]
[PlyCount "149"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,149,-1,20,31,35,31,18,28,25,22,26,35,29,35,27,73,47,43,55,86,87,248,252,253,268,251,264,271,267,251,86,85,98,97,100,84,58,104,104,96,104,91,105,165,156,297,286,760,21,315,309,407,418,369,0,0,0,0,0,0,0,0,0,0,0,0,0,91,62,5543,5539,12833,7950,5502,-148,-147,-210,-24,-24,-24,-24,-24,-24,-24,-24,-24,-114,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-103,-102,-103,-102,-102,-12,-12,-12,-12,-12,-12,-12,-12,-12,-12,-11,-11,8,8]} 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. b3 d4 5. Bg2 c5 6. e3 {A13: English Opening: 1...e6} Nc6 7. exd4 cxd4 8. O-O Be7 9. d3 Nd7 10. Na3 {LiveBook: 3 Games} O-O 11. Nc2 e5 12. Rb1 a5 13. a3 Nc5 14. b4 axb4 15. axb4 Na4 $1 {[%cal Ra4c3] And now ...Nc3 would win.} 16. Bd2 $1 {[#]} f6 $146 17. Nh4 g5 18. Nf3 Bf5 19. b5 Nb8 $2 {[#]} (19... Na5 $16) 20. Nfxd4 $1 $18 {[%mdl 512]} exd4 21. Bxb7 Ra7 22. Bd5+ Kh8 23. Nxd4 Bh3 24. Qh5 $2 (24. Re1 $18 {is more deadly.}) 24... Bxf1 $16 25. Kxf1 Qe8 26. Qf3 {[%mdl 1024] White has strong compensation.} Nb6 27. Be4 Bc5 28. Nb3 $1 $40 {[%cal Rb3c5][%mdl 128] White goes for the king.} Ra2 29. Qf5 {[%csl Ge4][%cal Rf5h7]} Qe7 {[#]} 30. Be1 $1 Ba3 (30... N8d7 $16) 31. c5 $18 {[%cal Bc4c5,Bc5c6][%mdl 32]} Na4 (31... Nc8 $16) 32. c6 Nc5 $2 {[#]} (32... Bd6 33. Nd4 Ra3) 33. Bc3 $2 ({Only move:} 33. Nxc5 $1 $18 Bxc5 34. b6 Nxc6 35. Bxc6) 33... Nxb3 $4 {[%mdl 8192]} (33... Nxe4 $11 {and Black stays safe.} 34. dxe4 Rc2) 34. Rxb3 Bc5 35. d4 Bd6 36. b6 $2 (36. d5 $18) 36... Nxc6 $1 $11 37. Bxc6 {aiming for b7.} Qe2+ 38. Kg2 Bf4 39. Bb2 Rxb2 40. Rxb2 Qxb2 41. Be4 {[%csl Ge4][%cal Rf5h7]} Rf7 42. Qe6 Qxd4 (42... Qe2 $1 $11 {remains equal.}) 43. gxf4 {[%mdl 4096] Endgame KQR-KQB} ({Much weaker is} 43. Qxf7 $6 Qxe4+ 44. Kg1 Qe1+ 45. Kg2 Qe4+ 46. Kg1 Qe1+ 47. Kg2 Qe4+ $11) 43... Qb4 $2 {[%mdl 8192]} (43... Rg7 $14) 44. b7 $18 Rf8 {[#]} 45. b8=Q $1 {[%mdl 512]} Qxb8 46. Qe7 $2 (46. Qd7 $18 {[%csl Ge4][%cal Rd7h7]} f5 47. Qd4+ (47. Bxf5 Qa8+ 48. Kg3 gxf4+ 49. Kxf4 Qb8+ 50. Kg4 Rg8+ 51. Kf3 Qb3+ 52. Ke4 Qc4+ 53. Ke3 Qc3+ 54. Ke4 Qc4+ 55. Ke3 Qc1+ 56. Ke4 Qc4+ $17) 47... Kg8 48. Bd5+ Rf7 49. Qf6) 46... f5 $17 47. Bd5 (47. Bc2 $17) 47... Qd8 $2 (47... gxf4 $19 {Threatens to win with ...Qe8.} 48. Kf3 Qe8 49. Qxe8 Rxe8) 48. Qe5+ $11 Qf6 49. Qxf6+ Rxf6 50. fxg5 {KR-KB} Rd6 51. Bf3 h6 52. gxh6 (52. h4 $11 {keeps the balance.}) 52... Kh7 53. Kg3 Rd4 54. h4 Kxh6 55. Be2 Kg6 56. f4 Rb4 57. h5+ Kf6 58. Bd1 Rb1 59. Bf3 Rb3 60. Kf2 Rb8 61. Kg3 Rg8+ 62. Kf2 Ke7 63. Bd1 Rg7 64. Be2 Kf6 65. Bf3 Ra7 66. Bd5 Ra3 67. Bf3 Ke7 68. Kg3 Kd7 (68... Rd3 $17 69. Kf2 Kf6) 69. h6 {The position is equal.} Ra6 70. Kh4 ({Don't go for} 70. h7 $2 Rh6 $19) 70... Rxh6+ 71. Kg5 Rh3 72. Bd5 Rd3 73. Bf7 Rd4 74. Kxf5 Rxf4+ 75. Kxf4 {Precision: White = 65%, Black = 46%.} 1/2-1/2

[Event "Champions Showdown Kings Rapid 2019-B"]
[Site "Saint Louis"]
[Date "2019.02.19"]
[Round "12.2"]
[White "Nakamura, Hikaru"]
[Black "Duda, Jan-Krzysztof"]
[Result "1-0"]
[ECO "A18"]
[WhiteElo "2749"]
[BlackElo "2731"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2019.02.09"]
[EventType "match (rapid)"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,64,8,9,11,14,7,16,23,0,31,0,27,25,10,23,21,26,104,94,94,98,101,106,98,48,113,113,112,101,108,72,103,80,86,67,212,222,221,218,384,382,364,365,420,327,1191,1191,29997,29998,29999]} 1. c4 e6 2. Nc3 Nf6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. Nf3 b6 8. d4 Bb7 9. Bd3 Bxf3 {A18: English Opening: Flohr-Mikenas System (1 c4 Nf6 2 Nc3 e6 3 e4)} 10. Qxf3 Qxf3 11. gxf3 Nc6 $146 {The position is equal.} ({Predecessor:} 11... Bd6 12. a4 Nc6 13. Be4 Kd7 14. Ke2 Rae8 15. Bxc6+ Kxc6 16. f4 g6 17. Be3 {1-0 (40) Karjakin,S (2783)-Nakamura,H (2786) chess.com INT 2017}) 12. Be3 Na5 13. Rb1 Be7 14. Ke2 f5 15. c5 $36 {[%mdl 2048] White fights for an advantage.} g5 16. f4 g4 (16... h6 $1 $11 {remains equal.}) 17. h3 $16 gxh3 18. Rxh3 h5 {[#]} 19. d5 $1 {[%cal Rd5e6]} exd5 20. Bxf5 h4 (20... Bf6 $14) 21. Be6 c6 22. Bd4 Rf8 23. f5 {Hoping for Rg1.} ({Reject} 23. cxb6 $6 axb6 24. Kf3 Nc4 $11) 23... Nb7 24. cxb6 axb6 25. Rxb6 Rxa2+ ({Black should play} 25... Nd8 $1 $14) 26. Kf1 $18 Nd8 {[#]} 27. Re3 $1 h3 $2 (27... Ra8 {is a better defense.} 28. Kg2 Bd6 29. Bxd5+ Kd7) 28. Rxh3 c5 29. Be3 Nxe6 30. Rxe6 {aiming for Bxc5.} d4 $2 (30... Rxf5 31. Bxc5 Rf7) 31. Bg5 Rxf5 32. Rxe7+ Kf8 33. Rh8# {Accuracy: White = 73%, Black = 38%.} 1-0

