[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.12"]
[Round "1"]
[White "Maghsoodloo, Parham"]
[Black "Korobov, Anton"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2679"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,75,31,41,6,0,3,6,15,12,3,13,12,10,-24,-25,-13,-25,-68,-67,-73,-84,-174,-189,-201,-192,-222,-185,-381,-386,-427,-424,-430,-428,-448,-443,-442,-437,-426,-372,-459,-446,-452,-461,-492,-491,-634,-636,-862,-818,-4882,-4687,-29993,-29994,-29999]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 h5 9. Nd5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} (9. Qd2 Nbd7 10. Nd5 Bxd5 11. exd5 g6 12. Be2 Bg7 13. O-O-O O-O 14. g4 a5 15. a4 Nb6 16. gxh5 Nxh5 17. Bb5 Nf6 {0-1 (71) Leko,P (2690)-Vachier Lagrave,M (2780) Batumi 2018}) 9... Nxd5 10. exd5 Bf5 11. Bd3 Bxd3 12. Qxd3 Nd7 {LiveBook: 20 Games} 13. O-O Be7 14. Qd2 O-O 15. Na5 $146 ({Predecessor:} 15. c4 Qc7 16. Na5 Bd8 {½-½ (33) Jacobsen,J (2151)-Kuhne,D (2273) ICCF email 2010}) 15... Qc8 16. c4 Bd8 17. Rac1 Re8 18. Kh1 e4 19. Nb3 exf3 20. gxf3 Ne5 {[%cal Bd7e5,Be5g6,Bg6h4,Bh4f5,Bf5g3][%mdl 32]} 21. c5 Qh3 $36 {[%mdl 2048] Black has strong initiative.} 22. Qd1 {[#]} (22. Bd4 $17) 22... Ng6 $1 $19 23. Qd2 Rc8 24. Bg1 Nh4 25. Qf2 $2 (25. Rcd1 {is a better defense.}) 25... Bg5 26. Rc4 Nf5 27. Qg2 {[#]} Ng3+ $1 {[%mdl 576] Deflection} 28. Qxg3 Qxf1 29. Rc2 Bf6 30. Rf2 Qb5 31. cxd6 Rcd8 32. Rd2 h4 {[%cal Bh5h4,Bh4h3][%mdl 32]} 33. Qf4 Re1 34. Rg2 {Qxf6 is the strong threat.} h3 35. Rg4 {White threatens Qxf6 and mate.} Be5 36. Qg5 Rxd6 {( -> ...Qe2)} 37. Nd2 Qe2 {[%csl Ge5][%cal Re2h2]} 38. Qf5 Qxh2# {Accuracy: White = 18%, Black = 93%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.12"]
[Round "1"]
[White "Chigaev, Maksim"]
[Black "Saduakassova, Dinara"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2604"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,113,1,0,0,0,0,0,17,0,0,0,0,0,13,0,5,-16,0,-29,-41,-24,-9,-12,8,14,8,-6,0,-28,-18,-52,-29,-74,-50,-58,-45,-38,-37,-40,-44,-38,0,-30,0,0,0,0,0,0,12,0,60,63,214,205,219,208,208,218,391,202,419,411,366,281,356,248,213,236,445,433,479,487,799,792,743,693,716,697,2199,1984,29991,450,29994,1793,1381,1380,1266,945,923,869,956,971,880,880,718,636,804,787]} 1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 Bc5 5. Bb3 O-O 6. O-O h6 7. h3 d6 8. c3 a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 9. a4 {LiveBook: 4 Games} (9. Nbd2 Be6 10. Ba4 Qb8 11. Bb5 Qa7 12. a4 Ne7 13. Bc4 Bd7 14. Nb3 Bb6 15. Qc2 c6 16. d4 {1-0 (83) Savchenko,B (2566)-Svidler,P (2765) Riadh 2017}) 9... Be6 10. Nbd2 Qb8 $146 {The position is equal.} ({Predecessor:} 10... Re8 11. Nc4 d5 12. exd5 Bxd5 13. Ncxe5 Nxe5 14. Nxe5 Rxe5 15. d4 Bxb3 16. Qxb3 Bxd4 17. cxd4 {½-½ (96) Ileana,G (2205)-Georgescu,T (2470) Arad 2017}) 11. Nh4 Nh7 12. Nf5 Qd8 13. Ng3 Qh4 {aiming for ...Qxg3.} 14. Nf5 Qd8 15. Ne3 Nf6 16. Qf3 Ne7 17. Ndc4 Ng6 18. Bc2 Nh4 19. Qd1 Bxe3 20. Nxe3 d5 {[%cal Bd6d5,Bd5d4][%mdl 32]} 21. f3 c5 22. Qe1 Ng6 23. c4 d4 $1 {[%cal Rd4e3]} 24. Nf5 Nh5 25. g3 Qc7 26. Bd1 Nf6 27. h4 Kh7 28. Qd2 Ng8 29. Qh2 N6e7 30. g4 Ng6 31. Ng3 {[%cal Bf5g3,Bg3h5,Bh5f4][%mdl 32]} N8e7 32. Nh5 f6 33. b3 Ng8 ({Black should try} 33... Qd7 $11) 34. Ra2 N6e7 $2 (34... N8e7 $14) 35. f4 $1 $18 exf4 36. Nxf4 ({Resist} 36. Bxf4 $6 Qd7 $16) (36. Qxf4 Qe5 $14) 36... Qd7 37. g5 f5 $2 (37... Ng6 38. Nxg6 Kxg6 39. gxh6 Nxh6) 38. Bf3 (38. Rg2 $142) 38... Kh8 $2 (38... fxe4 {keeps fighting.} 39. dxe4 (39. Bxe4+ Bf5 $16) 39... Nc6) 39. Rg2 fxe4 40. Bxe4 Bf5 41. Bf3 ({Weaker is} 41. gxh6 Nxh6 42. Qg3 Rg8 $18) 41... Ra6 42. Qg3 Ng6 $2 (42... Rf7 {is a better defense.} 43. Bd2 Bh7) 43. Nxg6+ Bxg6 44. gxh6 Rf7 (44... gxh6 $142 45. Bf4 Rxf4) 45. hxg7+ Rxg7 46. Bg4 Qe8 47. Bf4 Re7 {[#]} 48. h5 $1 {[%mdl 512]} Bh7 {[#]} (48... Bxh5 49. Bxh5) 49. Bd6 (49. Be5+ $142 $1 {[%mdl 512]} Nf6 (49... Rxe5 50. Be6) 50. Bh3 Bg6 51. Bxf6+ Rxf6 52. Rxf6 Re1+ 53. Kh2 Re2 54. Rxg6) 49... Re3 {[#]} (49... Rxd6 $18 50. Qxd6 Bxd3) 50. Bf3 (50. Be6 $142 $1 {[%mdl 512]} Bg6 (50... Rxe6 51. Qg7#) 51. hxg6 Kg7 52. Be5+ Rxe5 {[%mdl 64] Remove Defender} 53. Qxe5+ {[%mdl 64] Double Attack} Nf6 54. Qxf6+ Kh6 55. Rh2#) 50... Qf7 {White is clearly winning.} 51. Bxc5 Rxd3 52. Bd5 {Threatening mate with Bxd4+!} Qxf1+ 53. Kxf1 {[%csl Gg2][%cal Rg3g7]} Rf6+ 54. Ke1 {[%csl Gg2][%cal Rg3g7]} Rxg3 55. Rxg3 Rf4 56. Bxb7 Nf6 57. Rf3 {Accuracy: White = 62%, Black = 36%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.12"]
[Round "1"]
[White "Esipenko, Andrey"]
[Black "Kovalev, Vladislav"]
[Result "1/2-1/2"]
[ECO "A49"]
[WhiteElo "2584"]
[BlackElo "2687"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,56,22,33,16,28,41,30,30,34,0,10,24,8,16,36,41,40,9,9,9,9,9,14,12,0,0,0,0,0,0,0,0,0,0,0,0,6]} 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. b3 e5 7. dxe5 dxe5 8. Ba3 Qxd1 {A49: 1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems} 9. Rxd1 Re8 10. c4 c6 (10... e4 11. Nd4 c6 12. Nc3 Na6 13. e3 h5 14. h3 Nc7 15. Rd2 Ne6 16. Nxe6 Bxe6 {½-½ (83) Rakhmanov,A (2629)-Perez Candelario,M (2611) Linares 2018}) 11. Nc3 Na6 {LiveBook: 5 Games} 12. Rac1 Bh6 13. e3 Bf8 14. Bxf8 Kxf8 15. Rd6 $146 ({Predecessor:} 15. h3 Bd7 16. g4 h6 17. Rd6 {½-½ (34) Romanishin,O (2499)-Mikkelsen,N (2412) Berlin 2013}) 15... Ke7 16. Rd2 Kf8 17. h3 h6 18. Rd6 Kg7 19. g4 Nc5 {The position is equal.} 20. b4 Nce4 21. Nxe4 Nxe4 22. Rd3 Nxf2 23. Kxf2 e4 24. Rd4 {[#] Hoping for Nd2.} (24. Rd6 {is interesting.} exf3 25. Bxf3 a6 26. a4 Be6 27. c5) 24... exf3 25. Bxf3 a6 26. a4 Be6 27. c5 Re7 28. Rb1 Rae8 {Precision: White = 70%, Black = 69%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.12"]
[Round "1"]
[White "Praggnanandhaa R"]
[Black "Bareev, Evgeny"]
[Result "0-1"]
[ECO "C15"]
[WhiteElo "2539"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,102,20,70,24,28,25,21,12,22,0,0,0,0,-10,-2,-13,0,0,6,-26,-28,-30,-21,-22,-13,-57,-39,-55,-67,-72,-56,-58,-60,-74,-79,-85,-79,-71,-70,-90,-84,-111,-115,-198,-109,-106,-105,-113,-107,-187,-198,-195,-93,-104,-75,-70,-28,-28,-20,-28,-28,-28,-28,-88,-93,-168,-168,-189,-173,-366,-366,-832,-832,-29974,-29975,-29975,-29976,-29976,-29976,-29978,-29979,-29978,-29979,-29984,-29985,-29986,-29987,-29988,-29982,-29982,-29983,-29982,-29982]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Bd3 c6 6. Nf3 Bg4 {LiveBook: 6 Games. C01: French: Exchange Variation} (6... Ne7 7. O-O Bf5 8. Bxf5 Nxf5 9. Re1+ Ne7 10. Qd3 Nd7 11. a3 Bd6 12. Ne2 O-O 13. Bf4 Bxf4 14. Nxf4 {1-0 (43) Vachier Lagrave,M (2811)-Bellahcene,B (2475) Bastia 2016}) 7. a3 Bd6 8. h3 Bh5 {White has an edge.} 9. g4 $146 ({Predecessor:} 9. O-O Ne7 10. Re1 Nd7 11. Qe2 Nf8 12. Bf5 Bxf3 13. Qxf3 Nfg6 {½-½ (21) Reichenbach,W (2282)-Uhlmann,W (2475) Gladenbach 1999}) 9... Bg6 10. Bg5 Ne7 11. Bxg6 hxg6 12. Qe2 f6 13. Bd2 Nd7 14. O-O-O Nb6 15. Rde1 Qd7 16. Qd3 O-O-O 17. Ne2 g5 18. Ba5 Rde8 19. Bxb6 axb6 20. Ng3 g6 21. Kb1 Kb8 22. a4 Rh7 23. h4 Qxg4 {[%cal Rg5h4]} 24. hxg5 Rxh1 25. Rxh1 fxg5 26. Rh7 Qe6 27. Qb3 (27. Qd1 $17) 27... g4 (27... Nc8 $19 28. Qc3 Qf6) 28. Ne5 $17 Bxe5 29. dxe5 Nc8 ({Of course not} 29... Qxe5 $6 30. Qxb6 Rc8 31. Qb4 $11) 30. Qb4 (30. Qe3 $17) 30... Qxe5 $19 31. Qxg4 Qe1+ (31... Nd6 $19 {has better winning chances. White must now prevent ...Nc4.} 32. Qxg6 Ka7) 32. Ka2 $17 Qxf2 33. Qxg6 Qf8 34. Nf5 Ka8 35. c3 Ne7 36. Nxe7 Rxe7 $11 {[%mdl 4096] Endgame KQR-KQR} 37. Rh4 (37. Qd6 $11 Rf7 38. Qxf8+ Rxf8 39. Ka3) 37... Re2 $17 {Strongly threatening ...Rxb2+!} 38. Rb4 (38. Qg3 $17) 38... Ka7 $1 $19 39. Qg4 Qe7 40. Qg1 $2 (40. Qh4 {was worth a try.}) 40... c5 41. Rb5 $2 (41. Rb3 Re4 42. Qf1) 41... Qe4 42. Ka3 Re1 {Black mates.} 43. Ra5+ bxa5 44. Qxc5+ {[#]} Kb8 $1 45. Qd6+ {[#]} Kc8 $1 46. Qc5+ Kd7 47. Qb5+ Ke6 48. Qe8+ Kf5 49. Qh5+ Kf6 50. Qh6+ Ke7 51. Qg7+ Kd6 {Accuracy: White = 25%, Black = 62%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.12"]
[Round "1"]
[White "Van Foreest, Lucas"]
[Black "Gledura, Benjamin"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2502"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,81,13,22,8,36,3,9,11,23,0,0,0,-7,-16,-4,-14,-4,-9,-15,-13,0,-21,-15,-18,-9,-10,-17,-16,-16,-23,-7,-25,-16,-8,0,-20,0,0,-7,-9,0,0,0,0,0,0,-11,-15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. h3 e5 7. a4 {B31: Sicilian: 2...Nc6 3 Bb5 g6} (7. a3 a5 8. Be3 Qe7 9. Nbd2 Nf6 10. Nc4 Nd7 11. a4 b6 12. Qd2 Ba6 13. Bh6 Bxh6 14. Qxh6 Bxc4 15. dxc4 O-O-O 16. O-O-O Nf6 17. Qg5 Rxd1+ 18. Rxd1 Re8 19. Qe3 h5 20. Ng5 Nd7 21. Nf3 {½-½ (21) Quesada Perez,Y (2619)-Cori Tello,J (2657) Saint Louis 2017}) 7... Qe7 8. O-O Nf6 {[%cal Bg8f6,Bf6h5,Bh5f4][%mdl 32]} 9. Be3 O-O {LiveBook: 4 Games} 10. Qd2 b6 $146 ({Predecessor:} 10... Ne8 11. Qc3 b6 12. a5 Rb8 13. Re1 Nc7 14. axb6 axb6 15. Ra7 Rb7 16. Rxb7 Bxb7 17. Nbd2 Ne6 18. Nc4 Qc7 19. Ra1 Nd4 20. Bxd4 {½-½ (20) Sheppard,B (2343)-Tomecek,J (2448) ICCF email 2009}) 11. Bh6 Nh5 12. Nc3 f6 13. Nh2 Bxh6 14. Qxh6 Nf4 15. Rae1 Qg7 16. Qxg7+ Kxg7 17. Ne2 Nxe2+ 18. Rxe2 Be6 19. f4 exf4 20. Rxf4 Rad8 21. b3 b5 22. Rf1 bxa4 23. bxa4 c4 24. Re3 a5 25. Nf3 {The position is equal.} c5 26. Ra1 Rf7 27. dxc4 Rb7 28. e5 Bxc4 29. exf6+ Kxf6 30. Ne5 Bg8 31. Rf1+ Kg7 32. Rc3 c4 33. Nxc4 Rc7 {Strongly threatening ...Rd4.} 34. Rd3 $1 {[%cal Rd3d8]} Rxd3 35. cxd3 Bxc4 $11 {[%mdl 4096] Endgame KRB-KR} 36. Rc1 {[%mdl 64] [#] Pin} Kf6 37. dxc4 Ke5 38. Rb1 Kd4 39. Rb5 Rc5 $1 40. h4 Kxc4 41. Rb7 {Accuracy: White = 62%, Black = 67%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.12"]
[Round "1"]
[White "Paehtz, Elisabeth"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2477"]
[BlackElo "2500"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,84,52,34,0,45,14,28,0,16,26,40,40,83,65,65,30,59,50,108,108,132,133,142,102,128,60,87,45,56,10,16,8,12,28,27,9,0,0,0,0,0,0,0,0,100,67,157,162,147,154,130,121,199,174,191,151,127]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 h5 9. Qd2 Nbd7 {[%cal Bb8d7,Bd7b6,Bb6c4][%mdl 32]} 10. O-O-O Be7 11. Kb1 b5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} 12. a3 (12. h4 O-O 13. Bg5 Rc8 14. a3 Qc7 15. g4 hxg4 16. fxg4 Nb6 17. Bxf6 Bxf6 18. g5 {½-½ (70) Yu,Y (2751)-Vachier Lagrave,M (2789) Riadh 2017}) 12... Rc8 13. h4 Nb6 14. Bg5 Qc7 15. Bxf6 gxf6 {[#] LiveBook: 3 Games} 16. Nd5 $146 ({Predecessor:} 16. Na5 Rg8 17. g4 hxg4 18. fxg4 Rxg4 19. h5 Rg8 {1-0 (27) Demchenko,A (2645)-Areshchenko,A (2652) Tbilisi 2017}) 16... Bxd5 17. exd5 Nc4 18. Qf2 f5 19. g3 Bf6 {Threatening ...Nxb2!} 20. c3 a5 21. Bd3 a4 22. Na1 {[%cal Bb3a1,Ba1c2,Bc2b4][%mdl 32]} (22. Bxc4 $5 bxc4 23. Na1 $14) 22... f4 23. gxf4 exf4 (23... Qc5 $14 24. Qe2 Kf8) 24. Bxc4 $16 bxc4 25. Nc2 Rg8 26. Nb4 Qc5 27. Qc2 ({White should try} 27. Qd2 $16) 27... Kf8 $14 28. Qf5 ({Reject} 28. Qxa4 $6 Rg2 $11) 28... Rg2 $1 {[#] And now ...Qf2! would win.} 29. Rhf1 Kg7 {White must now prevent ...Re8.} 30. Qxf4 Re8 $1 {[%cal Re8e2] aiming for ...Ree2.} 31. Rd2 Rxd2 32. Qxd2 Qe3 $1 {[%cal Re3d2]} 33. Qh2 Qe5 34. Qg2+ Kh6 35. Qd2+ Qe3 36. Qh2 Be5 (36... Qe5 $1 $11 37. Qh3 Qf4) 37. Qc2 $16 Qf4 ({Black should play} 37... Rg8 $14) 38. Qxa4 Rg8 39. Qc2 Qxh4 40. a4 Qh3 {[#]} (40... Ra8 $16 {was called for.}) 41. Qc1+ $1 $18 Kh7 42. f4 Bf6 {Accuracy: White = 52%, Black = 50%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.12"]
[Round "1"]
[White "Kuipers, Stefan"]
[Black "L'Ami, Erwin"]
[Result "0-1"]
[ECO "B62"]
[WhiteElo "2470"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,80,29,30,8,17,-8,19,-22,-5,-46,0,-106,-81,-120,-107,-94,-54,-65,-60,-81,-72,-85,-83,-137,-137,-132,-128,-129,-127,-183,-117,-111,-125,-206,-223,-254,-241,-226,-223,-300,-295,-272,-264,-267,-250,-352,-336,-364,-349,-499,-508,-499,-481,-475,-487,-661,-646,-656,-643,-664,-641,-963,-897]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd3 a6 8. O-O-O Bd7 9. Be2 Rc8 {B62: Sicilian: Richter-Rauzer: 6...e6: Unusual White 7th moves} (9... h6 10. Bh4 Ne5 11. Qe3 g5 12. Bg3 b5 13. Nf3 Neg4 14. Qd3 b4 15. Nd5 exd5 16. exd5 Qa5 17. Kb1 {0-1 (51) Lampert,J (2514)-Sutovsky,E (2683) Douglas 2017}) 10. Nxc6 Bxc6 {LiveBook: 3 Games} 11. Rhe1 Be7 {The position is equal.} 12. f4 O-O 13. Bf3 Qc7 14. Kb1 Rfd8 15. Qe3 $146 (15. f5 $11 {keeps the balance.}) ({Predecessor:} 15. Qe2 h6 16. Bxf6 Bxf6 17. Rd3 {½-½ (33) Sirigos,N (2295)-Sutovsky,E (2340) Bratislava 1993}) 15... h6 $17 16. h4 d5 ({But not} 16... hxg5 17. hxg5 g6 18. gxf6 $11) 17. exd5 hxg5 (17... Bxd5 {feels hotter.} 18. Nxd5 Nxd5 19. Bxd5 hxg5 20. Be4 gxf4 21. Qf2 b5) 18. dxc6 gxf4 19. Rxd8+ Bxd8 20. Qd3 bxc6 21. Qxa6 (21. Ne4 $142) 21... Nd5 22. Ne4 Rb8 {[#] Strongly threatening ...Qe5.} 23. c3 Bxh4 24. Rh1 (24. Rc1 $17) 24... Be7 (24... f5 $19 25. Nd2 Nxc3+ 26. Kc1 Qe5) 25. Kc1 g6 26. Bd1 (26. Nd2 $17) 26... Kg7 $40 {[%mdl 128] Black has strong attack.} 27. Qd3 {[#] Threatens to win with Qh3.} Qb6 {[%csl Gb8][%cal Rb6b2]} 28. Bb3 Qe3+ 29. Kc2 Qxd3+ 30. Kxd3 f5 31. Nd2 e5 {[%cal Be6e5,Be5e4][%mdl 32]} 32. Nc4 (32. Bxd5 $142 cxd5 33. Nb3) 32... e4+ 33. Ke2 Bc5 34. Ne5 (34. Ba4 {was worth a try.}) 34... Ne3 {Black is clearly winning.} 35. Nd7 Rb5 36. Nxc5 Rxc5 37. g3 g5 {[%cal Bg6g5,Bg5f4,Bf4f3][%mdl 32]} 38. gxf4 gxf4 39. a4 Ng4 40. Ra1 f3+ {Accuracy: White = 33%, Black = 88%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.13"]
[Round "2"]
[White "Korobov, Anton"]
[Black "Gledura, Benjamin"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2699"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,67,-16,0,-26,-13,-14,-30,-50,-41,-34,0,-2,-3,-6,0,-5,-7,-3,-7,-6,-7,-6,-7,-7,-6,-7,-3,-4,0,-4,0,0,0,-8,-8,-8,0,-5,0,-8,0,-10,-16,-12,0,0,0,0,0,-2]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Bg7 6. e4 Nxc3 7. Bxc3 O-O 8. Qd2 Nc6 {[%cal Bb8c6,Bc6e5,Be5g4][%mdl 32] D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3} (8... c5 9. d5 Bxc3 10. bxc3 Qd6 11. f4 e6 12. Bc4 b5 13. Bxb5 exd5 14. Bc4 Bb7 15. Nf3 Rd8 16. Bxd5 Bxd5 17. Qxd5 Qxd5 18. exd5 Rxd5 {½-½ (29) Tomashevsky,E (2702)-Nepomniachtchi,I (2768) Satka 2018}) 9. d5 Ne5 10. f4 Ng4 {LiveBook: 5 Games} 11. Nf3 Bxc3 $146 ({Predecessor:} 11... e6 12. Bxg7 Kxg7 13. O-O-O exd5 14. exd5 Re8 15. Bc4 Bf5 16. Rhe1 Rxe1 17. Rxe1 {1-0 (44) Akobian,V (2625)-Yang,K (2392) Atlantic City 2016}) 12. bxc3 e6 13. c4 exd5 14. cxd5 Nf6 15. Bd3 {The position is equal.} Qe7 16. O-O Nxe4 17. Bxe4 Qxe4 18. Rfe1 Qf5 19. Rac1 Qf6 20. Qd4 Qxd4+ 21. Nxd4 c6 22. dxc6 bxc6 23. Nxc6 Be6 24. a4 Kg7 25. Nd4 Bd5 26. Rc7 Rfc8 27. Rd7 Rd8 28. Ree7 a6 29. g4 Rac8 30. Kf2 Rxd7 31. Rxd7 Bc6 32. Rd6 Bxa4 33. Rxa6 Bd7 34. h3 {Accuracy: White = 47%, Black = 60%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.13"]
[Round "2"]
[White "Kovalev, Vladislav"]
[Black "Praggnanandhaa R"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2687"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,128,6,23,19,37,33,37,23,37,27,25,27,32,0,14,0,21,16,32,14,65,68,78,39,56,53,43,0,0,0,0,0,0,0,29,24,28,27,22,31,39,62,52,51,52,54,94,65,122,102,139,90,92,53,129,121,160,169,166,0,0,0,0,2,8,0,11,21,14,22,15,8,102,8,15,0,10,10,10,8,14,8,14,8,8,8,15,8,8,8,8,8,8,8,8,0,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. d4 cxd4 (5... Bg7 6. dxc5 Qa5+ 7. Nbd2 Ba6 8. a3 Qxc5 9. c4 Nf6 10. b4 Qb6 11. O-O O-O 12. Bb2 d6 13. Qc2 {1-0 (35) Nepomniachtchi,I (2759)-Dubov,D (2703) Sochi 2018}) 6. Qxd4 {B31: Sicilian: 2...Nc6 3 Bb5 g6} f6 7. O-O d6 {LiveBook: 5 Games} 8. c4 {White has an edge.} c5 9. Qd3 Bg7 $146 ({Predecessor:} 9... Bh6 10. a3 Bxc1 11. Rxc1 Nh6 12. Nc3 Rb8 13. b4 cxb4 14. axb4 Rxb4 15. Rxa7 {1-0 (22) Tripp,G (1828)-Cowling,T (1658) ICCF email 2013}) 10. Nc3 Nh6 11. Nh4 Rb8 12. b3 O-O 13. Re1 Nf7 14. f4 f5 15. exf5 gxf5 16. Bb2 e6 (16... Bd4+ $11 17. Kh1 e6) 17. Nf3 Re8 18. Re3 Bb7 19. Rae1 Be4 20. Qd2 d5 $1 21. Na4 {[%cal Bc3a4,Ba4c5,Bc5d3][%mdl 32] [#] Black must now prevent Bxg7.} d4 22. Rxe4 fxe4 23. Rxe4 e5 24. Nxc5 Qc8 25. Nd3 $36 {[%cal Rf4e5][%mdl 2048] White is pushing.} Qf5 26. Qe2 {[%cal Rf4e5]} Nd6 27. Rxe5 $1 Bxe5 28. fxe5 Qe4 29. Kf2 a5 30. Nxd4 (30. Bxd4 {with more complications.} Qxe2+ 31. Kxe2 a4 32. Kd2 Ne4+ 33. Ke3) 30... Qxe2+ (30... a4 $14) 31. Nxe2 $16 Nf5 32. Nef4 Rec8 {and if ...a4 works, Black does fine.} 33. g4 Ne7 ({Black should play} 33... Ng7 $14) 34. Ba3 Rb7 35. Nc5 Rbc7 36. Nfe6 $2 ({Better is} 36. Nce6 $18) 36... Rc6 $11 37. Ke3 h6 {Threatens to win with ...Kf7.} 38. Kd4 Ng6 $1 39. Kd5 {Nd7 is the strong threat.} Kf7 {[#] Strongly threatening ...Ne7+.} 40. Nd8+ $1 Rxd8+ 41. Kxc6 {And now e6+ would win.} Nxe5+ {[%mdl 4096] Endgame KRN-KBN} 42. Kb5 Nxg4 (42... Rd2 $11) 43. Nb7 ({But not} 43. Kxa5 $6 Rd2 $11) (43. Bc1 $16) 43... Rd2 $1 {The position is equal.} 44. h3 Nf2 45. Bc1 Rxa2 46. Bxh6 Nxh3 47. Nxa5 Nf2 48. b4 Nd3 49. Nc6 Ke8 50. Be3 Kd7 51. Bb6 Nf4 52. Ba5 Kc8 53. Ne7+ Kd7 54. Nc6 Kc8 55. c5 Nd5 56. Ne5 Rh2 57. Kc6 Ne7+ 58. Kd6 Nf5+ 59. Kd5 Rh6 60. Nf7 Rf6 61. Ne5 Ne7+ 62. Kc4 Rf5 63. Nd3 Nc6 64. Bb6 Rh5 {Accuracy: White = 67%, Black = 55%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.13"]
[Round "2"]
[White "Maghsoodloo, Parham"]
[Black "Paehtz, Elisabeth"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2679"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,111,38,37,33,36,29,36,29,43,34,53,39,66,55,46,37,54,39,35,44,77,54,98,102,88,-11,-8,-4,0,0,18,0,18,-8,-11,-22,29,29,38,37,50,31,42,35,35,35,35,30,58,29,43,43,52,41,79,43,73,80,68,8,164,157,159,164,153,166,166,166,151,157,271,270,275,266,306,271,339,317,360,308,314,311,349,341,334,334,333,322,443,424,493,493]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bg4 5. h3 Bh5 6. d3 Nbd7 7. Qe1 {A07: Réti Opening: New York and Capablanca Systems} e5 8. e4 dxe4 (8... Bd6 9. Nh4 O-O 10. Nf5 Bc7 11. Nc3 Nb6 12. a4 a5 13. f4 dxe4 14. dxe4 exf4 15. gxf4 {½-½ (23) Nakamura,H (2780)-Jakovenko,D (2721) Palma de Mallorca 2017}) 9. dxe4 Bc5 10. a4 a5 11. Nbd2 O-O {LiveBook: 23 Games} 12. Nc4 Qc7 13. Bd2 {[%cal Rd2a5]} b6 14. Nh4 Rfe8 {[#]} 15. Kh2 $146 Qa7 16. f3 Bf8 17. Bc3 Qc7 18. b3 Rac8 19. Rf2 Nd5 20. Bb2 Nb4 21. Bf1 Nc5 22. Rd1 f6 23. Bc1 (23. g4 $1 $16 {[%cal Rg4h5]} Bf7 24. g5) 23... Rcd8 {Hoping for ...Rxd1.} 24. Rxd8 Rxd8 25. Be3 Bf7 26. Rd2 g6 27. Qd1 (27. Ng2 {is more complex.} Rb8 28. Qa1 Be6 29. h4 h5 30. Na3) 27... Rxd2+ 28. Qxd2 Be7 (28... Qd7 $142 29. Qe2 Qd8) 29. Ng2 $11 Be6 30. Ne1 Nba6 31. Nb2 Nb8 32. Bc4 Bxc4 33. Nxc4 Nbd7 34. Kg2 Kg7 35. h4 Ne6 36. Nd3 {[%cal Be1d3,Bd3f2,Bf2g4][%mdl 32]} Kf7 37. h5 Bd8 38. Nf2 Be7 39. Ng4 Bb4 40. Qd3 ({White should play} 40. c3 $14 Be7 41. hxg6+ hxg6 42. Qd1) 40... Bf8 $2 {[#]} (40... b5 $1 $11 {and Black is okay.} 41. axb5 cxb5 42. hxg6+ hxg6 43. Nh6+ Ke7) 41. Nxb6 $1 $18 {[%mdl 512]} Ndc5 ({Don't go for} 41... Nxb6 $2 42. Bxb6 Qd6 43. Qxd6) 42. Bxc5 $1 Nxc5 43. Qc4+ Ne6 {[#]} 44. hxg6+ $1 hxg6 {[#]} 45. Qa6 $1 f5 (45... Bb4 $16) 46. Nf2 Bb4 47. Nc4 Kf6 48. Qa8 Nd8 49. g4 Bc3 50. exf5 gxf5 51. Ne3 Bd4 52. Nxf5 Bxf2 53. Kxf2 e4 54. Nd4 Qb6 55. c3 c5 {[#]} 56. g5+ $1 {Precision: White = 57%, Black = 28%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.13"]
[Round "2"]
[White "Bareev, Evgeny"]
[Black "Chigaev, Maksim"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2650"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,96,0,0,33,14,24,6,9,1,16,0,8,0,10,0,0,0,8,0,7,16,7,0,29,7,18,25,104,7,5,12,11,7,41,5,8,4,4,-33,4,-33,-34,-34,-35,-32,0,-6,38,41,42,42,42,40,41,43,53,53,53,53,53,53,53,56,111,59,59,59,66,51,58,47,49,44,50,36,43,41,58,41,41,42,41,41,41,33,35]} 1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 d5 5. c4 dxc4 6. Bxc4 Bd6 {D00: 1 d4 d5: Unusual lines} 7. Nf3 {LiveBook: 12 Games} Qe7 $146 ({Predecessor:} 7... c6 8. Nc3 Nd7 9. O-O O-O 10. e4 Nb6 11. Bb3 Bg4 12. h3 Bxf3 13. Qxf3 Kg7 14. Rad1 {½-½ (52) Sarana,A (2641)-Demchenko,A (2679) Sochi 2018}) 8. O-O O-O {The position is equal.} 9. Nbd2 Nd7 10. Re1 c6 11. Rc1 Rd8 12. h3 Nb6 13. Bb3 Kg7 14. e4 Bf4 15. Rc3 Bd7 16. a3 Rac8 17. Qc2 Qf8 18. Ba2 f5 19. Ne5 c5 (19... Re8 $11) 20. Ndf3 (20. Nxf7 $16 cxd4 21. Rxc8 Rxc8 22. Qd3) 20... cxd4 $11 21. Rxc8 Rxc8 22. Qd3 Qc5 (22... Bxe5 $5 23. Nxe5 fxe4 24. Qxe4 Re8 25. Qxd4 f6 $11) 23. Nxd7 Nxd7 24. exf5 Ne5 $132 {[%mdl 2048] Black is not keeping still} 25. f6+ Kh6 26. Qe4 Nxf3+ 27. Qxf3 Qe5 $1 {[%cal Re5e1] [#]} 28. Rd1 {Hoping for Qg4.} Qxf6 (28... Rc7 {feels hotter.} 29. Bd5 b6 30. h4 Qxf6 31. g3 Be5) 29. Qxb7 Rb8 30. Qxa7 Rxb2 31. Qxf7 Qxf7 32. Bxf7 $14 {[%mdl 4096] Endgame KRB-KRB} Bd6 33. a4 d3 34. Bc4 Bc5 35. Rxd3 Rxf2 {[#] Threatens to win with ...Rf4+.} 36. Kh2 Rf4 37. Bb5 Rd4 (37... Bd4 $14) 38. Rc3 (38. Rxd4 $16 Bxd4 39. a5) 38... Bd6+ {White is slightly better.} 39. Kg1 Rd2 40. Kf1 Ra2 41. Bc6 Kg5 42. Rd3 Be5 43. Ke1 Kf6 44. Kd1 h5 45. Kc1 g5 46. Rb3 Ke7 47. Kb1 Ra1+ 48. Kc2 Kd6 {Accuracy: White = 47%, Black = 57%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.13"]
[Round "2"]
[White "L'Ami, Erwin"]
[Black "Esipenko, Andrey"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2643"]
[BlackElo "2584"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,103,4,33,13,11,-8,-8,-9,-9,-9,-9,-4,-4,-10,-7,-11,-18,-7,0,0,0,-39,-39,-39,-43,-43,-39,-39,-41,-45,-31,-30,-34,-35,-29,-39,-43,-44,-35,-42,-45,-60,-57,-63,-18,-67,-27,-35,0,-71,-65,-70,-85,-73,-40,-49,-38,-52,-49,-50,-50,-50,-50,-53,0,-10,-10,-10,-10,-10,0,0,0,0,0,-3,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d3 d6 9. a3 Bg4 {LiveBook: 17 Games. C88: Closed Ruy Lopez: Anti-Marshall Systems} (9... Nb8 10. Nbd2 Nbd7 11. Ba2 c5 12. Nf1 Nb6 13. Ng3 Qc7 14. Nh4 g6 15. Bh6 Re8 16. Qd2 Ng4 17. Bg5 Bxg5 18. Qxg5 {½-½ (33) Van Foreest,J (2609)-Anand,V (2783) Germany 2018}) 10. Be3 d5 11. h3 (11. Nbd2 {looks sharper.} Na5 12. Ba2 dxe4 13. dxe4 c5 14. h3) 11... Bxf3 12. Qxf3 {[%cal Rb3d5]} dxe4 13. dxe4 Nd4 14. Bxd4 $1 Qxd4 15. Nc3 c6 16. Red1 $146 ({Predecessor:} 16. Rad1 Qa7 17. Na2 {½-½ (31) Biedermann,K (2052)-Halvax,G (2020) ICCF email 2012}) 16... Qb6 17. a4 Rad8 18. axb5 axb5 19. Qf5 Qc7 20. Ne2 g6 21. Qf3 Rxd1+ 22. Rxd1 Kg7 23. Ng3 Bc5 24. c3 Qe7 25. Qe2 Bb6 26. Rd2 Ra8 27. Nf1 Ra1 28. g3 h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 29. Kg2 {[#]} h4 $1 {[%mdl 512]} 30. Rd3 (30. gxh4 Nh5) 30... Ra7 31. Rf3 Qd8 32. Rd3 Qe7 33. Rf3 Rd7 34. Rd3 Rxd3 35. Qxd3 Nd7 (35... hxg3 {is more complex.} 36. Nxg3 Nd7 37. Qd2 Nc5 38. Ba2 Qd8) 36. Qf3 Nc5 37. Bc2 hxg3 38. fxg3 Qe6 {Hoping for ...Qa2.} 39. Ne3 Qa2 40. Nd1 $1 b4 (40... Nd7 $15) 41. cxb4 {The position is equal.} Qc4 {[%mdl 64] Double Attack} 42. Ne3 Qxb4 {And now ...Ne6 would win.} 43. Ng4 $1 Qd2+ 44. Qf2 Qd6 45. Qe3 Nd7 46. Qh6+ Kg8 47. Bb3 Nc5 {[%mdl 64] Double Attack} 48. Bc4 Nxe4 {[#]} 49. Nxe5 $1 {[%mdl 512]} Qxe5 {[%mdl 64] Double Attack} 50. Qxg6+ $1 {[%mdl 64] Double Attack} Kh8 51. Qh6+ Kg8 52. Qg6+ $1 {[%mdl 64] Double Attack. Accuracy: White = 75%, Black = 58%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.13"]
[Round "2"]
[White "Keymer, Vincent"]
[Black "Kuipers, Stefan"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "2500"]
[BlackElo "2470"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,67,0,11,6,34,34,34,29,41,27,40,33,41,35,36,37,64,66,65,59,59,49,65,58,57,21,67,70,77,7,123,135,103,152,166,146,151,127,199,243,358,320,665,637]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5} Be7 10. cxd5 (10. O-O-O dxc4 11. Bxc4 a6 12. Be2 Nbd7 13. Nxg6 hxg6 14. Kb1 c5 15. d5 exd5 16. Nxd5 Nxd5 17. Qxd5 {0-1 (31) Karjakin,S (2773)-Caruana,F (2822) Saint Louis 2018}) 10... cxd5 11. O-O-O Nc6 12. Nxg6 hxg6 13. Kb1 a6 {LiveBook: 35 Games} 14. Rc1 Kf8 15. Na4 Nd7 16. Ba5 Qb8 {[#]} 17. Be1 $146 Bd6 18. Bf2 Na5 19. Qc3 Qd8 20. e4 dxe4 21. fxe4 b5 22. e5 Be7 23. Nc5 Nxc5 24. dxc5 Nc6 25. Bd3 Qc7 26. Be4 Rd8 27. Rhf1 (27. Bg3 $16) 27... Kg8 {[#]} ({Avoid the trap} 27... Rxh2 $2 28. Bg3 $18) (27... Bh4 $1 $11) 28. Rfd1 $1 $16 Rxd1 29. Rxd1 b4 30. Qc4 Nxe5 31. Qxb4 {Black must now prevent Qb6.} Kh7 (31... f5 $16) 32. Qb7 $18 Rc8 (32... Bd8 {was worth a try.} 33. Qxa6 Ng4) 33. c6 {Threatens to win with Bb6.} ({Not} 33. Qxa6 Ng4 $16) 33... f5 $2 {[#]} (33... Bd8 34. Bg3 f5) 34. Bb6 $1 {Precision: White = 81%, Black = 31%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.13"]
[Round "2"]
[White "Saduakassova, Dinara"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2472"]
[BlackElo "2502"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,106,11,12,12,31,28,104,93,97,84,86,75,75,78,175,166,183,153,166,110,235,174,228,216,292,287,305,295,310,117,112,123,335,335,335,316,364,364,351,247,230,247,210,44,39,20,37,45,40,8,48,18,19,17,18,0,6,0,12,-60,-10,-10,-7,-14,-15,-19,-11,-11,-11,-57,-36,-77,-40,-61,-18,-39,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. Nf3 d5 6. cxd5 exd5 7. Bg5 {[%cal Bc1g5,Bg5h4,Bh4g3,Bg3d6][%mdl 32] E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0} h6 8. Bh4 c5 9. dxc5 (9. e3 cxd4 10. Nxd4 Nc6 11. Nxc6 bxc6 12. a3 Bxc3+ 13. Qxc3 d4 14. Qxd4 Qxd4 15. exd4 {½-½ (28) Laznicka,V (2662)-Gelfand,B (2703) Novy Bor 2018}) 9... g5 10. Bg3 Ne4 11. e3 Nd7 {LiveBook: 4 Games} 12. Bd6 Qa5 {[%cal Re4c3]} 13. Bd3 $146 ({Predecessor:} 13. Bxf8 Nxc3 14. bxc3 Bxc3+ {0-1 (22) Karavade,E (2374)-Prithu,G (2458) Douglas 2018}) 13... Nxc3 (13... Re8 $11 {keeps the balance.}) 14. O-O $1 $16 Re8 (14... Nxa2 $2 15. b3 $18) 15. bxc3 Bxc5 16. Bg3 Nf6 17. Rab1 $36 {[%mdl 2048] Keeping Black busy.} b6 (17... Ne4 $16 {is a better defense.}) 18. Be5 $18 Ng4 19. Bd4 Bxd4 20. exd4 (20. Nxd4 $6 Qc5 $14) (20. cxd4 $18 Be6 21. Rb3) 20... Be6 (20... Qa3 $16) 21. Qd2 Rac8 (21... Qa3 {might work better.} 22. h3 Nf6) 22. Rbc1 Kf8 {[#]} 23. h4 $1 f6 24. Bg6 ({Weaker is} 24. hxg5 fxg5 25. Nxg5 hxg5 $18) 24... Re7 25. Rfe1 $2 (25. hxg5 $18 {and the rest is easy.} hxg5 {[#]} 26. Nxg5 $1 {[%mdl 512]}) 25... Qa3 $16 26. Qc2 Kg7 $2 (26... Qd6 $16) 27. Bh5 $18 ({Not} 27. hxg5 hxg5 28. Bh5 Rf8 $18) 27... Qd6 28. Qg6+ Kf8 29. Bxg4 ({Less strong is} 29. hxg5 Rg7 $16) 29... Bxg4 30. Qxh6+ Kg8 31. Rxe7 Qxe7 32. Re1 $2 (32. Nh2 $18 Bd7 33. hxg5) 32... Qg7 $14 33. Qxg7+ Kxg7 {[%mdl 4096] Endgame KRB-KRN} 34. Nh2 Bf5 35. hxg5 {Hoping for Re7+.} fxg5 36. Re5 Kf6 37. Re3 Rc4 38. Nf1 Ra4 39. Re2 Bd3 40. Rb2 ({White should play} 40. Re5 $11) 40... Bc4 41. Ne3 Bxa2 42. Kf1 Bc4+ 43. Ke1 Ke6 44. Kd2 Ra5 45. Nc2 Kf5 46. Ke3 Kg4 47. Nb4 Ra1 {Strongly threatening ...Rd1.} 48. Nc6 Kh4 49. Ne5 {The position is equal.} Re1+ 50. Kd2 Re2+ 51. Kc1 Re1+ 52. Kd2 Re2+ 53. Kc1 Re1+ {Accuracy: White = 56%, Black = 43%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.14"]
[Round "3"]
[White "Gledura, Benjamin"]
[Black "Saduakassova, Dinara"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2615"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,82,54,29,45,50,43,47,0,0,0,0,0,0,-7,-10,-18,10,3,7,-15,-6,-9,0,0,0,-3,39,31,37,39,36,31,37,37,39,26,43,3,48,6,6,0,0,0,0,0,0,0,0,-58,0,-28,-19,-22,-20,-41,-33,-91,-95,-79,0,-23,0,-95,-76]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Bd3 d5 6. O-O {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves} Be7 7. Re1 Nd6 8. Nc3 c6 9. Qe2 (9. b3 O-O 10. Ba3 Bg4 11. h3 Bh5 12. Qe2 Bf6 13. Qe3 Re8 {1-0 (36) Grischuk,A (2766)-Caruana,F (2816) Leuven 2018}) 9... Nd7 10. b4 Nf8 {[%cal Bd7f8,Bf8e6,Be6c5,Bc5e4][%mdl 32] LiveBook: 6 Games} 11. b5 Bg4 $146 ({Predecessor:} 11... Ne6 12. bxc6 bxc6 13. Ne5 Qc7 {0-1 (28) Czarnota,P (2549)-Caspi,I (2484) Suwalki 2018}) 12. bxc6 bxc6 13. Qe3 Bxf3 $1 14. Qxf3 Ne6 15. Qh5 g6 16. Qg4 O-O 17. Ba3 Nc8 18. Bxe7 Nxe7 19. h4 Nc5 20. Re5 Qd6 21. Rae1 Ne4 22. Qf4 {aiming for R5xe4.} Nxc3 23. dxc3 {Strongly threatening Qh6.} f6 24. R5e4 $1 Qxf4 25. Rxf4 Kf7 26. c4 Rfe8 27. h5 Rad8 28. c5 Rb8 29. g4 gxh5 30. gxh5 Rg8+ 31. Kh2 Rg5 32. Rh4 Nf5 33. Rh3 {And now f4 would win.} Rb4 $36 {[%mdl 2048] [#] White is under pressure.} 34. Rg1 (34. c4 $1 $11 {[%mdl 512]}) 34... Ke6 ({Black should play} 34... Rf4 $15 35. Rxg5 fxg5) 35. Rxg5 fxg5 $11 {[%mdl 4096] Endgame KRB-KRN} 36. Rf3 Rh4+ 37. Kg2 Ng7 38. Re3+ (38. Bxh7 $15 Nxh5 39. Bf5+ Ke5 40. Bd7) 38... Kf6 $1 $17 39. Rf3+ {[#]} Ke6 (39... Ke5 $1 $17 40. Rf7 Nxh5 41. Rf5+ Kd4 42. Rxg5 Kxc5) 40. Re3+ $11 Kf6 (40... Kf7 $11) 41. Rf3+ $17 {[#]} Ke5 $1 {Accuracy: White = 61%, Black = 48%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.14"]
[Round "3"]
[White "Chigaev, Maksim"]
[Black "Kovalev, Vladislav"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2604"]
[BlackElo "2687"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,40,0,0,8,-6,14,12,14,14,14,9,12,8,17,0,12,0,15,0,12,0,21]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a6 6. Bb3 Ba7 7. h3 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} (7. Nbd2 O-O 8. h3 Re8 9. O-O d6 10. Re1 Be6 11. Bc2 h6 12. Nf1 d5 13. Ng3 dxe4 14. dxe4 Qxd1 15. Rxd1 Rad8 16. Re1 Nd7 17. Nf5 Bc5 18. Be3 Bxe3 19. Nxe3 Nb6 {½-½ (32) Miton,K (2584)-Ivanchuk,V (2726) Riadh 2017}) 7... h6 8. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3,Bg3f5][%mdl 32]} d6 9. Nf1 Be6 10. Ng3 Qd7 11. Qe2 {LiveBook: 12 Games. The position is equal.} Bxb3 12. axb3 Ne7 $146 ({Predecessor:} 12... Qe6 13. b4 Ne7 14. Be3 Bxe3 15. Qxe3 O-O 16. O-O {0-1 (50) Horton,J (2064)-Rindlisbacher,J (2217) Pune 2014}) 13. O-O Ng6 14. Nf5 O-O 15. Nh2 Qe6 16. b4 Ne7 17. Ng3 Ng6 18. Nf5 Ne7 19. Ng3 Ng6 20. Nf5 Ne7 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.14"]
[Round "3"]
[White "Esipenko, Andrey"]
[Black "Keymer, Vincent"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2584"]
[BlackElo "2500"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,75,20,-1,31,-2,10,0,32,23,48,47,67,56,87,98,108,64,68,-25,77,87,91,93,145,137,135,143,242,235,198,149,251,127,139,116,140,120,142,143,166,166,167,141,300,299,345,319,368,335,622,607,29990,29991,29991,29992,29992,29993,29993,29994]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 {[%cal Bg8f6,Bf6d7,Bd7b6,Bb6c4][%mdl 32]} 5. Nc3 a6 6. Nb3 e6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} (6... e5 7. Bg5 Be6 8. f4 exf4 9. Qd2 Be7 10. O-O-O Bxb3 11. cxb3 Nc6 12. Bxf4 O-O 13. Bxd6 Bxd6 14. Qxd6 Qa5 15. Be2 {½-½ (76) Kryvoruchko,Y (2695)-Abdusattorov,N (2558) Batumi 2018}) 7. g4 {[%cal Bg2g4,Bg4g5][%mdl 32]} b5 8. Bg2 Bb7 9. g5 Nfd7 10. f4 {LiveBook: 3 Games} Be7 11. h4 Nc6 12. Be3 Nb6 $146 ({Predecessor:} 12... Na5 13. Qe2 Nc4 14. O-O-O Nxe3 15. Qxe3 {1-0 (51) Apryshko,G (2371)-Sarana,A (2541) Moscow 2017}) 13. Qe2 Nc4 14. O-O-O Qc7 15. Kb1 Rc8 16. Bc1 Nb6 17. Qd3 O-O 18. Qh3 (18. h5 $1 $14) 18... Rfe8 (18... b4 $1 $11 {remains equal.} 19. Ne2 a5) 19. h5 $16 Na4 20. a3 Na5 (20... Bf8 $142) 21. Nxa5 $1 Qxa5 22. Nxa4 bxa4 {[#]} (22... Qxa4 $16 23. b3 Qa5) 23. g6 $1 $18 {[%mdl 512]} Qc7 (23... fxg6 24. hxg6) 24. c3 {aiming for h6.} Bf8 (24... Bd8 $16 {was worth a try.} 25. gxf7+ Qxf7) 25. Rhf1 ({White should try} 25. f5 $18) 25... h6 $16 26. f5 exf5 27. exf5 {Black must now prevent f6.} ({Much less strong is} 27. Qxf5 f6 $16) 27... f6 28. Rd4 Bc6 29. Bxc6 Qxc6 30. Qd3 Re5 $2 (30... Qb5 $16) 31. Bf4 $18 {[%cal Bc1f4,Bf4d6,Bd6b4][%mdl 32]} Rb5 32. Bxd6 Qg2 {[%csl Gb5][%cal Rg2b2]} 33. Bb4 Rcb8 $2 (33... Re5) 34. Rd1 a5 35. Qc4+ {White mates.} Kh8 {[#]} 36. Qxb5 $3 {[%mdl 576] Deflection} Rxb5 37. Rd8 {[%cal Rd8f8]} Qe4+ 38. Ka1 {Accuracy: White = 61%, Black = 19%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.14"]
[Round "3"]
[White "Praggnanandhaa R"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2539"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,69,0,0,0,0,0,0,0,0,0,-14,-8,-62,-31,-86,-11,-10,-11,-11,-10,-22,0,0,0,-3,0,-3,-10,-11,-8,-20,-10,-12,-8,-10,0,0,0,0,0,-8,-8,-10,0,0,0,-11]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6 gxf6 7. Nf3 f5 8. Nc3 a6 {C13: French: Classical System: 4 Bg5 Be7, Alekhine-Chatard Attack} 9. g3 (9. Qd2 b5 10. O-O-O b4 11. Na4 Qd5 12. b3 Bd7 13. Bc4 Qd6 14. d5 e5 15. Rhe1 e4 16. Nd4 {1-0 (40) Carlsen,M (2832)-Grischuk,A (2750) chess.com INT 2017}) 9... b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 10. Bg2 Bb7 11. O-O c5 12. d5 b4 13. dxe6 {LiveBook: 17 Games} bxc3 14. exf7+ Kf8 {[#] ...Qxd1 is the strong threat.} 15. Qc1 Kg7 16. bxc3 {And now Rd1 would win.} Nd7 $146 17. Qf4 Be4 18. Rfd1 ({White should play} 18. g4 $11) 18... Ra7 ({But not} 18... Bxc2 $2 19. Rd2 $18) 19. h4 (19. Bh3 $15) 19... Bf6 (19... Bxc2 20. Rd2 $18) (19... Qb8 $17 {Hoping for ...Qxf4.} 20. Qe3 Bf6) 20. Ng5 $1 $11 {[%cal Rg5e6] The position is equal.} Bxg5 21. hxg5 Bxg2 22. Kxg2 Qe7 (22... h6 {seems wilder.} 23. gxh6+ Rxh6 24. Rh1 Qf6 25. Rxh6 Qxh6 26. Qxf5 Qc6+) 23. Qxf5 Qxf7 24. Qxf7+ Kxf7 25. Rd6 Re8 26. Rad1 Nf8 27. R1d5 Re2 28. Rxc5 Rxc2 29. Ra5 Rxc3 30. Rdxa6 Rxa6 31. Rxa6 {KRN-KR} Rc2 32. Rf6+ Ke7 33. Ra6 Kf7 34. Rf6+ Ke7 35. Ra6 {Accuracy: White = 51%, Black = 70%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.14"]
[Round "3"]
[White "Van Foreest, Lucas"]
[Black "Bareev, Evgeny"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2502"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,69,29,29,30,30,28,14,50,57,57,33,57,62,59,58,95,50,72,55,152,152,127,127,115,119,119,101,88,95,85,107,83,96,102,93,155,52,56,54,56,47,157,177,177,169,1007,1006,2441,2200]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 Qd7 8. Nd2 e6 9. Ngf3 Bd6 10. Bxd6 Qxd6 11. O-O {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} O-O 12. Rfe1 {[%cal Bf1e1,Be1e3,Be3h3,Bh3h7][%mdl 32] LiveBook: 14 Games} Qc7 (12... Ne7 13. Ne5 Bf5 14. Bf1 Rab8 15. a4 Ne4 16. Nxe4 Bxe4 17. a5 f6 18. Nd3 Bxd3 19. Bxd3 {½-½ (45) Anand,V (2768)-Mamedyarov,S (2801) Saint Louis 2018}) 13. Ne5 {White has an edge.} Bh5 14. f4 $146 ({Predecessor:} 14. Ndf3 Rfe8 15. Re3 Bxf3 16. Nxf3 Rab8 17. Rae1 b5 18. R3e2 b4 19. Rc2 Qb6 20. a3 a5 21. Qa4 Ne7 22. axb4 {½-½ (22) Keller,H (2406)-Fister,B (2204) ICCF email 2007}) 14... Bg6 (14... Bg4 $5) 15. Bxg6 hxg6 16. Re3 Rfc8 17. Qd1 b5 18. Qe1 b4 19. Rh3 {Black must now prevent Nxg6!} bxc3 20. bxc3 (20. Qh4 $5 {[%cal Rh4h8]} Nh5 21. bxc3 $16) 20... Qe7 (20... Nxe5 $14 21. fxe5 Ng4) 21. Nxc6 $1 $16 ({Don't take} 21. Qh4 $6 Nh5 $14) 21... Rxc6 22. Qh4 {[%csl Gh3][%cal Rh4h8]} Kf8 23. Qh8+ Ng8 24. Rh7 f6 25. Nf3 Rxc3 {[#]} 26. Ne5 $1 {[%cal Re5g6][%mdl 512]} fxe5 27. fxe5 {[#] White threatens Rf1+ and mate.} Rf3 $1 {[%mdl 512]} 28. gxf3 {And now Rb1 would win.} Rb8 {[#]} 29. f4 (29. Kh1 $1 $16) 29... Qc7 $1 $14 30. f5 exf5 31. Re1 $36 {[%mdl 2048] Threatens to win with Kh1. White has good play.} Rb7 ({Better is} 31... Rb2 $14) 32. Rh3 $16 Qa5 33. Qh4 Ne7 $2 (33... g5 34. Qf2 g6) 34. e6 $18 {White wants to mate with Qh8+.} Qd2 35. Rb3 {Accuracy: White = 70%, Black = 46%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.14"]
[Round "3"]
[White "Paehtz, Elisabeth"]
[Black "Korobov, Anton"]
[Result "1/2-1/2"]
[ECO "A62"]
[WhiteElo "2477"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,80,49,32,20,-2,50,25,47,44,39,23,77,76,64,72,83,77,89,91,95,36,60,59,97,27,26,12,24,38,33,42,104,5,43,16,32,27,29,42,27,8,18,15,26,26,33,13,26,26,43,26,52,52,52,52,52,52,52,52,52]} 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 g6 6. Bg2 Bg7 7. Nc3 O-O 8. Nf3 d6 9. O-O a6 10. a4 Nbd7 11. Bf4 Qe7 12. Rb1 {LiveBook: 13 Games. A63: Modern Benoni: Fianchetto Variation: 9...Nbd7} Re8 13. Qc1 {[#]} Qf8 $146 (13... Nb6 $11) ({Predecessor:} 13... Ng4 14. Bg5 Qf8 15. b4 cxb4 16. Rxb4 {1-0 (62) Yuffa,D (2521)-Yilmaz,M (2619) Batumi 2018}) 14. Re1 h6 15. Qc2 Rb8 16. b4 c4 (16... cxb4 $11 {remains equal.} 17. Rxb4 Nh5) 17. h3 $16 Nh5 18. Bd2 b5 19. axb5 axb5 20. g4 Nhf6 21. e4 (21. Nd4 $16) 21... Ne5 22. Nxe5 dxe5 23. f4 (23. Be3 $16) 23... Qd6 $11 24. f5 Bd7 25. Be3 Ra8 26. Bc5 Qb8 (26... Qc7 $14) 27. Ra1 ({Better is} 27. fxg6 $16 fxg6 28. Rf1) 27... Qb7 28. Qd2 Rxa1 29. Rxa1 {[#] Ra7 is the strong threat.} Ra8 30. Rxa8+ Qxa8 31. Qa2 (31. Qb2 {with more complications.} Bf8 32. Ne2 Qb8 33. Qa3 Kg7 34. Qa6) 31... Qxa2 32. Nxa2 gxf5 33. gxf5 Nh5 34. Bf1 Bf6 35. Bd6 Nf4 36. Kh2 h5 37. Kg3 {White is slightly better.} Bg7 38. Nc3 f6 39. h4 Bh6 40. Bc5 Kf7 {Precision: White = 46%, Black = 28%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.14"]
[Round "3"]
[White "Kuipers, Stefan"]
[Black "Maghsoodloo, Parham"]
[Result "0-1"]
[ECO "B62"]
[WhiteElo "2470"]
[BlackElo "2679"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,82,19,18,23,17,12,14,0,0,0,8,0,34,0,0,-37,-28,-53,-55,-41,-29,-29,-18,-18,-17,-15,-30,-26,-21,-16,0,-29,0,-80,-37,-54,-45,-45,-39,-33,0,-55,-58,-60,-40,-50,-60,-64,-60,-78,-69,-111,-112,-109,-93,-1250,-1308,-1233,-1263,-5106,-5110]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd3 Bd7 8. O-O-O a6 9. Be2 h6 {B62: Sicilian: Richter-Rauzer: 6...e6: Unusual White 7th moves} 10. Bh4 Be7 (10... Ne5 11. Qe3 g5 12. Bg3 b5 13. Nf3 Neg4 14. Qd3 b4 15. Nd5 exd5 16. exd5 Qa5 17. Kb1 {0-1 (51) Lampert,J (2514)-Sutovsky,E (2683) Douglas 2017}) 11. f4 Rc8 12. Nxc6 Bxc6 {LiveBook: 3 Games} 13. f5 O-O 14. fxe6 fxe6 15. Bf3 $146 ({Predecessor:} 15. Rhf1 Qc7 16. Qh3 Bd7 17. Kb1 {0-1 (85) Barbalic,Z (2062)-Zaas,P (2224) ICCF email 2014}) 15... Qa5 16. Kb1 Be8 17. Bg3 e5 18. Nd5 Nxd5 19. exd5 Bb5 20. Qg6 {[#] And now Qe6+ would win.} Rf6 21. Qe4 Be8 {White must now prevent ...Bg6.} 22. Qg4 Qc7 23. Be4 Qd7 24. Qe2 Bg6 25. Rhf1 Bxe4 26. Qxe4 b5 27. b3 a5 28. Bh4 (28. Rxf6 $11 {remains equal.} Bxf6 29. Be1) 28... Rff8 29. Bxe7 Qxe7 30. Rf5 Rxf5 31. Qxf5 Qf8 (31... Re8 {is more complex.} 32. Qe6+ Qxe6 33. dxe6 Rxe6 34. Rd5 Rf6) 32. Qxf8+ ({White should play} 32. Qd7 $11) 32... Kxf8 $11 {[%mdl 4096] Endgame KR-KR} 33. Rd3 b4 {[%cal Bb5b4,Bb4c3][%mdl 32]} 34. c4 bxc3 35. Kc2 Rc5 36. a3 Ke7 37. b4 axb4 38. axb4 Rc4 39. Rxc3 $2 {[%mdl 8192] [#]} (39. Rg3 $17) 39... Rxc3+ $19 {Black is clearly winning.} 40. Kxc3 Kd7 41. h4 h5 {Accuracy: White = 39%, Black = 75%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.15"]
[Round "4"]
[White "Korobov, Anton"]
[Black "Saduakassova, Dinara"]
[Result "1/2-1/2"]
[ECO "E56"]
[WhiteElo "2699"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,66,-6,-16,-8,-19,-4,-19,-42,-7,0,-14,-20,-18,-15,0,0,0,-10,-6,-7,-6,-13,0,-11,0,-48,-45,-71,-71,-73,-9,-8,-14,-14,-15,-22,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 {[%cal Bf8b4,Bb4a5,Ba5c7][%mdl 32]} 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 Ba5 9. Na4 dxc4 10. Bxc4 cxd4 11. exd4 h6 {LiveBook: 10 Games. E56: Nimzo-Indian: Rubinstein: Main Line: 7...Nc6} (11... Ne7 12. Qe2 Ng6 13. Nc3 Bxc3 14. bxc3 b6 15. Bb3 Bb7 16. h3 Rc8 17. Bd2 Ne4 18. Qe3 Nxd2 19. Nxd2 {0-1 (30) Khismatullin,D (2662)-Lastin,A (2617) Olginka 2011}) 12. Be3 Ne7 13. Rc1 $146 ({Predecessor:} 13. Nc5 Bc7 14. Rc1 b6 15. Na6 Bd6 16. Qe2 Bb7 17. Ne5 Rc8 18. f3 Ned5 19. Bd2 Ne7 20. Kh1 Nf5 21. Bc3 Nh5 22. Kg1 {0-1 (22) Burlov,V (2410)-Maiorov,N (2516) Moscow 2007}) 13... Bc7 14. Nc3 a6 15. Bd3 b6 16. Ne4 {[#] Nxf6+ is the strong threat.} Nfd5 17. Bd2 Nf5 18. Ng3 Nxg3 19. hxg3 Bb7 20. Re1 Nf6 21. Qe2 Qd7 22. Rc2 Rfd8 23. Be3 b5 24. Rc5 Ng4 25. Bh7+ Kf8 (25... Kh8 $17 26. Bc2 Bb6) 26. Ne5 $11 {The position is equal.} Nxe5 27. dxe5 Bb6 28. Qg4 g5 29. Qh5 Kg7 30. Bxg5 $1 hxg5 ({Stronger than} 30... Kxh7 31. Qxh6+ Kg8 {[#]} 32. Bf6 $1 {[%mdl 512]} Bxc5 33. Qh8#) 31. Qxg5+ Kxh7 32. Qh5+ Kg7 33. Qg5+ Kh7 {Precision: White = 63%, Black = 59%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.15"]
[Round "4"]
[White "Kovalev, Vladislav"]
[Black "Van Foreest, Lucas"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2687"]
[BlackElo "2502"]
[Annotator "TA"]
[PlyCount "158"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,158,16,16,12,12,9,14,13,20,20,16,11,6,0,0,2,0,0,16,12,28,20,25,25,23,19,25,19,24,17,24,26,28,20,33,25,28,28,31,25,26,22,42,17,17,4,2,0,0,0,3,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,25,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,8,8,8,8,8,0,849,842,29959,29960,4570,1633,29968,29968,29976,29975,29975,29976,29976,29977,29977,29978,29978,29979,29979,29980,29980,29981,29984]} 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 Ne8 {LiveBook: 46 Games. The position is equal.} 13. d5 c6 14. Be3 cxd5 15. Qd2 Nc7 16. Na3 d6 17. Nc2 Bf5 18. Nb4 {[#]} Be4 $146 19. Rd1 Qe7 20. a3 h6 21. f3 Bf5 22. Qf2 b6 23. Nxd5 Nxd5 24. Rxd5 Be6 25. Rd2 Bb3 26. Bd4 Bxd4 27. Rxd4 d5 28. Qe2 Kf8 29. Kf2 Re8 30. Qxe7+ Kxe7 $11 {[%mdl 4096] Endgame KRB-KRB} 31. Bb5 {Threatens to win with Rb4.} Rc8 32. h4 f6 33. h5 Kd6 34. Rg4 Rc7 35. Ke3 Re7+ 36. Kd2 Kc5 37. Ba6 Ba2 38. a4 Bb3 39. Kd3 Bd1 {...Be2+ is the strong threat.} 40. Kd2 Bb3 41. Rf4 Re5 42. g4 Re8 43. Rd4 Re7 44. Rf4 Re8 45. Be2 Re7 46. Bd1 Bxd1 47. Kxd1 {KR-KR} Re8 48. Kd2 Re7 49. b4+ Kc6 50. Rd4 Re5 51. c4 dxc4 52. Rxc4+ Kd7 53. Rd4+ Kc6 54. Kd3 Rg5 55. Kc4 {And now b5+ would win.} a6 {[%cal Ba7a6,Ba6b5][%mdl 32]} 56. Rd8 b5+ 57. axb5+ axb5+ 58. Kd4 f5 59. f4 Rxg4 60. Ke5 Rh4 61. Rd6+ Kc7 62. Rg6 Rxh5 63. Rxg7+ Kc6 64. Rg6+ Kc7 65. Re6 Kb7 66. Kf6 Rh1 67. Kxf5 h5 68. Re5 Kc6 $2 {[%mdl 8192]} (68... Kb6 $11) 69. Ke6 $1 $18 h4 70. f5 h3 {[#]} 71. f6 $1 {[%cal Rf6f7]} Rf1 {[#]} 72. Re2 $1 {White mates.} Rf4 73. Rc2+ Kb6 74. f7 Rf3 75. Re2 Kc6 76. Ke7 Kd5 77. f8=Q Rxf8 78. Kxf8 Kc4 79. Re4+ Kd5 {Accuracy: White = 81%, Black = 68%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.15"]
[Round "4"]
[White "Maghsoodloo, Parham"]
[Black "Esipenko, Andrey"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2679"]
[BlackElo "2584"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,59,0,0,-3,0,0,0,0,0,-7,22,-22,-22,-42,-18,-11,-11,-20,-18,-16,-11,-10,-2,-16,0,-5,0,0,0,0,0,0,0,-10,-13,-20,-18,-23,0,-15,0,-33,0,-27]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7 7. O-O e5 8. b3 Be7 9. Bb2 O-O {LiveBook: 42 Games. A34: Symmetrical English: 2 Nc3, lines with ...d5} 10. Ne1 Qd7 (10... Be6 11. Bxc6 bxc6 12. Nf3 f6 13. d3 Bh3 14. Re1 Ne6 15. Rc1 Qe8 16. Na4 Rd8 17. Rc4 {1-0 (49) Maghsoodloo,P (2615)-Sethuraman,S (2631) Sharjah 2018}) 11. Nd3 b6 12. Bxc6 $146 ({Predecessor:} 12. f4 exf4 13. Nxf4 Bf6 14. Qb1 Bb7 15. Ne4 Bxb2 16. Qxb2 f5 17. Ng5 {0-1 (37) Navinsek,T (2320)-Rogulj,B (2430) Pula 1998}) 12... Qxc6 13. Nxe5 Qe6 14. Nd3 Bb7 15. Nf4 Qd7 {[%mdl 1024] Black has compensation.} 16. d3 Rad8 17. f3 f5 18. Qd2 Bg5 19. Rad1 Ne6 20. e3 Rfe8 21. Nce2 Ba6 22. Nc1 Nc7 23. Qf2 Nd5 24. Rfe1 Qf7 25. a3 Bb7 26. Ng2 Nc7 27. Nf4 Nd5 28. Ng2 Nc7 29. Nf4 Nd5 30. Ng2 {Accuracy: White = 87%, Black = 63%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.15"]
[Round "4"]
[White "Bareev, Evgeny"]
[Black "Gledura, Benjamin"]
[Result "1/2-1/2"]
[ECO "D03"]
[WhiteElo "2650"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,72,18,10,16,-2,0,-4,0,0,7,0,0,0,0,-8,0,-5,0,-42,-37,-52,-51,-107,-106,-84,-85,-82,-88,-100,-73,-125,-86,-112,-25,-76,0,-103,0,0,0,0,0,-72,0,0,0,0,0,0,0,0,0,0,0,0,8,8,24]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. e3 O-O 5. Nbd2 d5 6. Bd3 c5 7. c3 b6 8. O-O Nc6 9. Re1 {LiveBook: 3 Games. D03: 1 d4 d5 2 Nf3 Nf6 3 Bg5, including Torre Attack with early ...d5} h6 (9... Bb7 10. Qe2 Re8 11. Rad1 Nd7 12. e4 dxe4 13. Nxe4 cxd4 14. cxd4 Nb4 15. Bc4 Nd5 16. Ne5 N7f6 {0-1 (76) Lapshun,Y (2403)-Zanan,E (2512) Barcelona 2018}) 10. Bxf6 $146 (10. Bh4 {is interesting.} Nh5 11. h3 Bb7 12. Bb5 Rc8 13. Rc1) ({Predecessor:} 10. Bh4 Bb7 11. Bg3 Nh5 12. Be5 c4 13. Bxg7 Nxg7 14. Bc2 f5 15. Ba4 Nb8 16. Ne5 Rf6 {1-0 (45) Elguezabal Varela,D (2356)-Rioboo de la Riva,A (2270) Madrid 2015}) 10... Bxf6 11. e4 e6 12. e5 Be7 13. a3 a5 14. Qe2 Kg7 15. Nf1 a4 16. Ne3 Bd7 17. Rad1 cxd4 18. cxd4 Rb8 19. g3 ({White should try} 19. Rc1 $15) 19... b5 $1 $17 20. h4 b4 21. h5 bxa3 22. bxa3 Bxa3 (22... gxh5 $6 23. Bc2 $11) 23. Bc2 (23. Ra1 $142 Bb4 24. Reb1) 23... Ne7 24. Ng4 Nf5 ({Inferior is} 24... gxh5 25. Nf6 $14 (25. Qd3 Rh8 $17)) (24... Bb4 $1 $17 {aiming for ...Bb5.} 25. Rf1 Bb5) 25. Rb1 (25. hxg6 $11 fxg6 26. Nf6) 25... Be7 (25... Bb4 $17 26. Red1 Bb5) 26. Kg2 (26. hxg6 $11 fxg6 27. Bxf5 Rxf5 28. Nf6 $1 {[%mdl 512]} (28. Rxb8 Qxb8 29. Nf6 Bxf6 $17)) 26... a3 ({Weaker is} 26... gxh5 27. Nf6 $1 $16 {[%mdl 512]}) ({Better is} 26... Rxb1 $1 $17 27. Rxb1 gxh5 28. Bxf5 hxg4 29. Bxg4 Qa5) 27. hxg6 $11 fxg6 28. Qd2 g5 {[#]} 29. Rh1 {[#]} (29. Nf6 $1 $11 {[%mdl 512] remains equal.} Bxf6 30. exf6+ Qxf6 31. Ne5 Rxb1 32. Rxb1) 29... a2 (29... Rxb1 $1 $17 30. Rxb1 Qc7) 30. Rxb8 {The position is equal.} Qxb8 31. Nf6 $1 $36 {[%mdl 2048] White is pushing.} Bxf6 32. exf6+ Rxf6 {White must now prevent ...Qb2.} 33. Bxf5 $1 {And now Bd3 would win.} exf5 34. Qxa2 f4 {Hoping for ...fxg3.} 35. Ne5 Bf5 36. gxf4 Be4+ {Accuracy: White = 39%, Black = 53%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.15"]
[Round "4"]
[White "L'Ami, Erwin"]
[Black "Chigaev, Maksim"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2643"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,95,4,33,13,11,0,0,0,0,0,0,-9,0,0,0,-1,18,13,28,-20,0,-31,0,-30,-22,-22,-15,-27,0,-6,-6,-6,-6,-8,-16,-14,-7,-6,-19,0,0,0,0,0,0,0,0,0,0,-2,0,0,0,0,0,0,0,0,14,4,4,4,4,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 d6 7. c3 O-O 8. Nbd2 Re8 9. Re1 Bf8 10. Nf1 h6 11. Ng3 b5 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines} 12. Bc2 (12. Bb3 Be6 13. Bxe6 Rxe6 14. a4 b4 15. d4 d5 16. dxe5 Nxe4 17. c4 Nxe5 18. cxd5 Nxf2 19. Kxf2 Ng4+ 20. Kf1 Rxe1+ 21. Qxe1 Qxd5 22. Qe4 Qd1+ 23. Qe1 Qd5 24. Qe4 Qd1+ 25. Qe1 {½-½ (25) Vachier Lagrave,M (2780)-Naiditsch,A (2721) Douglas 2018}) 12... d5 13. h3 Bb7 {LiveBook: 3 Games} 14. Nh2 dxe4 15. dxe4 $146 ({Predecessor:} 15. Nxe4 Nxe4 16. dxe4 Qxd1 17. Rxd1 Na5 {½-½ (30) Pavlicek,M (1926)-Loginov,P (1918) LSS email 2013}) 15... Qxd1 16. Rxd1 Red8 17. Ng4 Nxg4 18. hxg4 Rxd1+ 19. Bxd1 Nd8 20. Bb3 Be7 21. Be3 Bg5 22. Bc5 Bc8 23. f3 Be6 24. Bc2 Nb7 25. Bf2 Rd8 26. Nf1 Bc4 27. b3 {The position is equal.} Bd3 28. Bxd3 Rxd3 29. Be1 $1 Nc5 30. Kf2 $1 Rd8 {[#] aiming for ...Nd3+.} 31. Ke2 Nd3 {White must now prevent ...Nc1+.} 32. Ne3 Nxe1 33. Rxe1 Bxe3 34. Kxe3 $11 {[%mdl 4096] Endgame KR-KR} c5 35. Ke2 c4 36. bxc4 bxc4 37. Rd1 Rb8 38. Ke3 Rb2 39. Rd2 Rb1 40. Rd6 Rb2 41. Rxa6 Rc2 42. a4 {Threatening Rc6.} Rxc3+ 43. Kd2 Ra3 44. a5 c3+ 45. Kc2 g5 46. Rxh6 {[#] a6 is the strong threat.} Rxa5 47. Kxc3 Ra2 48. Rh2 {Precision: White = 52%, Black = 62%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.15"]
[Round "4"]
[White "Keymer, Vincent"]
[Black "Praggnanandhaa R"]
[Result "1/2-1/2"]
[ECO "D24"]
[WhiteElo "2500"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,73,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12,0,0,14,14,14,0,41,41,27,22,26,20,32,-58,13,9,14,8,10,14,31,31,31,27,39,37,40,50,58,14,24,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e4 Bb4 6. Bxc4 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3} Nxe4 7. O-O Nxc3 (7... Nf6 8. Qa4+ Nc6 9. Ne5 Rb8 10. d5 exd5 11. Nxd5 Nxd5 12. Nxc6 bxc6 13. Qxc6+ Qd7 14. Bxd5 {½-½ (28) Aronian,L (2764)-Caruana,F (2822) Stavanger 2018}) 8. bxc3 Bd6 9. Ng5 h6 10. Qh5 O-O {LiveBook: 9 Games} 11. Ne4 f5 12. Nxd6 cxd6 13. Re1 {aiming for Bxh6!} Rf6 {[#]} 14. Bf4 $146 d5 15. Bd3 Nc6 16. Rab1 b6 17. h4 Bd7 18. Re3 Qf8 19. Rbe1 Rc8 20. Qd1 Ne7 21. Ba6 {[%mdl 1024] White has compensation.} Rd8 22. Bc7 Ra8 23. Be5 Rf7 24. h5 (24. Bd6 $14) 24... Nc6 ({Black should try} 24... f4 $15 25. Rh3 Nc6) 25. Bf4 $11 Na5 26. Qe2 Re8 27. Bb5 Qe7 (27... Bxb5 {keeps more tension.} 28. Qxb5 Rf6 29. Qxd5 exd5 30. Rxe8 Nc4) 28. Bxd7 Qxd7 29. Rxe6 Rxe6 30. Qxe6 Qxe6 31. Rxe6 $14 {[%mdl 4096] Endgame KRB-KRN} Nc4 32. Kf1 Kf8 33. a4 Rd7 {The position is equal.} 34. Rc6 Kf7 35. Ke2 Re7+ 36. Kd1 Re6 37. Rc7+ {Accuracy: White = 63%, Black = 71%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.15"]
[Round "4"]
[White "Paehtz, Elisabeth"]
[Black "Kuipers, Stefan"]
[Result "1/2-1/2"]
[ECO "C13"]
[WhiteElo "2477"]
[BlackElo "2470"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,72,31,37,18,22,11,39,12,18,6,9,7,17,0,0,0,0,0,0,0,0,0,0,-11,0,0,0,0,0,0,0,0,9,9,9,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 {[%mdl 64] [#] Pin} Be7 6. Bxf6 Bxf6 7. Nf3 Bd7 8. Bd3 Bc6 9. c3 Bxe4 10. Bxe4 c6 11. Qe2 Nd7 12. O-O {C13: French: Classical System: 4 Bg5 Be7, Alekhine-Chatard Attack} O-O 13. Rfe1 (13. Rad1 Qc7 14. h4 Rfe8 15. g3 Rad8 16. Rfe1 {½-½ (16) Stukopin,A (2579)-Nyzhnyk,I (2601) New York 2018}) 13... Qc7 14. Rad1 {White is slightly better.} Rad8 {The position is equal.} 15. g3 $146 ({Predecessor:} 15. Bc2 g6 16. h4 Qf4 17. g3 Qg4 {½-½ (31) Horvath,K (2154)-Ruboczki,T (2049) Hungary 2013}) 15... Rfe8 16. Kg2 g6 17. Bc2 c5 18. h4 cxd4 19. Nxd4 a6 20. h5 Ne5 21. hxg6 hxg6 22. Be4 b5 23. a4 bxa4 24. Ra1 Rd6 25. Rxa4 Rb8 26. Rea1 Rdb6 27. R1a2 a5 28. Rxa5 Rxb2 $1 29. Rxb2 Rxb2 30. Ra8+ Rb8 31. Rxb8+ Qxb8 32. f4 Nd7 33. Bxg6 Bxd4 34. cxd4 Qd6 35. Bc2 Qxd4 36. Qd3 Qxd3 {Accuracy: White = 54%, Black = 78%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.16"]
[Round "5"]
[White "Gledura, Benjamin"]
[Black "Kovalev, Vladislav"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2615"]
[BlackElo "2687"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,84,16,19,0,0,0,0,0,0,-27,0,-13,0,0,0,0,0,-27,35,-26,0,0,0,0,0,0,0,-45,-47,-49,-54,-67,-77,-93,-97,-104,-109,-102,-103,-230,-226,-226,-226,-226,-226,-226,-232,-253,-258,-285,-274,-276,-259,-362,-350,-405,-419,-687,-663,-1137,-1093,-924,-928,-1073,-941,-919,-911]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. O-O d6 6. c3 a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} (6... a6 7. Re1 Ba7 8. a4 Ng4 9. Re2 Qf6 10. Nbd2 g5 11. Qe1 Rg8 12. Nf1 h5 13. Qd2 Be6 14. Bd5 Bxd5 15. exd5 {0-1 (29) Amin,B (2709)-Adhiban,B (2682) Zagreb 2018}) 7. Re1 O-O 8. h3 h6 9. Nbd2 Be6 10. Bb5 Qb8 {LiveBook: 32 Games} 11. Bxc6 (11. Nf1 {feels hotter.} Bb6 12. Qc2 Na7 13. Ba4 Nc6 14. Bd2) 11... bxc6 12. d4 exd4 13. cxd4 {[#]} Bb4 $146 ({Predecessor:} 13... Bb6 14. b3 d5 15. e5 {1-0 (38) Stevic,H (2579)-Deac,B (2594) Batumi 2018}) 14. Re2 a4 15. a3 Ba5 16. e5 $1 {[%cal Re5f6]} Nd5 17. Ne4 f5 18. Ng3 Nb6 (18... Qc8 $11) 19. d5 (19. Bd2 $14) 19... Bxd5 20. Nd4 f4 21. Ngf5 Rxf5 $1 22. Nxf5 {exd6 is the strong threat.} Qf8 $1 {[%cal Rf8f5]} 23. Nd4 c5 {[%mdl 1024] Black has compensation.} 24. Nf3 Bb3 $1 $36 {[%cal Rb3d1][%mdl 2048] Black has some pressure.} 25. Qd3 Bc4 26. Qc2 {Black should prevent Re4.} d5 27. e6 {Strongly threatening e7.} Bxe2 28. Qxe2 Nc4 $1 29. Ne5 (29. Bd2 $17 Nxd2 30. Nxd2) 29... Nxe5 $1 $19 30. Qxe5 {[#]} Qd6 $1 {[%cal Rd6e5]} 31. Bxf4 Qxe5 32. Bxe5 {[%mdl 4096] Endgame KRB-KRB} Re8 33. Rd1 Rxe6 34. Bc3 Bxc3 35. bxc3 {KR-KR} c6 36. c4 dxc4 37. f3 Re3 38. Rc1 (38. Ra1 $142) 38... Rxa3 {Black is clearly winning.} 39. Rxc4 Ra1+ 40. Kf2 a3 {[%cal Ba4a3,Ba3a2][%mdl 32]} 41. Rxc5 {[#]} a2 $1 42. Rc2 {[#]} Rf1+ $1 {[%mdl 576] Decoy, Clearance, Promotion. Accuracy: White = 42%, Black = 77%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.16"]
[Round "5"]
[White "Chigaev, Maksim"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2604"]
[BlackElo "2500"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,61,15,16,0,0,-10,0,0,0,-23,0,-15,-9,-14,-8,-18,0,0,8,0,0,0,25,0,0,9,9,3,12,-20,-24,-18,-17,-17,-21,-16,-5,-6,-12,-8,-5,-5,-5,-12]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Be7 8. Bc4 Be6 9. Bb3 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} Nbd7 10. O-O Rc8 {LiveBook: 3 Games} 11. Bg5 O-O 12. Bxf6 $146 ({Predecessor:} 12. Re1 Nb6 13. Qd2 Qc7 14. Rad1 Rfd8 15. h3 Nc4 16. Bxc4 Qxc4 {½-½ (25) Ernst,T (2455)-Brustman,A (2295) Osterskars 1995}) 12... Nxf6 13. Qe2 b5 14. Rfd1 Rc5 15. Ne1 Qb6 16. Kh1 a5 {[%cal Ba6a5,Ba5a4][%mdl 32]} 17. f3 a4 18. Bxe6 fxe6 19. a3 Rc4 20. Nd3 Rfc8 21. Rab1 Qb8 22. Rd2 Bd8 {[%cal Be7d8,Bd8b6,Bb6d4][%mdl 32]} 23. Nd1 Bb6 24. c3 d5 {[%cal Rd5e4]} 25. N1f2 $1 d4 {The position is equal.} 26. cxd4 $1 Bxd4 27. Rbd1 Qb6 28. Nb4 Nd7 29. Nfd3 Nc5 30. Nxc5 Qxc5 31. g3 {Accuracy: White = 50%, Black = 71%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.16"]
[Round "5"]
[White "Esipenko, Andrey"]
[Black "Paehtz, Elisabeth"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2584"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,85,13,42,0,33,28,44,3,2,-8,2,0,0,0,0,-8,0,-6,0,0,0,-28,-9,-18,-15,-21,-15,0,6,0,0,0,0,-52,16,20,20,11,13,22,16,20,35,34,34,34,37,35,36,34,33,9,20,8,8,8,9,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qb3 dxc4 5. Qxc4 Bf5 6. g3 e6 7. Bg2 Be7 8. O-O O-O 9. Nc3 Nbd7 10. Re1 Ne4 {LiveBook: 318 Games} 11. a4 $146 {D23: Queen's Gambit Accepted: 3 Nf3 Nf6 sidelines} ({Predecessor:} 11. Qb3 Qb6 12. Nh4 Qxb3 13. axb3 Bb4 14. Nxf5 exf5 15. Bxe4 fxe4 16. Bd2 Rfe8 17. Nxe4 Rxe4 18. Bxb4 Rxd4 19. Bc3 Re4 {½-½ (29) Nguyen,N (2618)-Maghsoodloo,P (2636) Hamedan 2018}) 11... Nxc3 (11... a5 {with more complications.} 12. Bf4 g5 13. Be3 Nd6 14. Qa2 Bg6) 12. bxc3 Be4 13. e3 {White is slightly better.} c5 14. Qe2 Rc8 15. Bb2 cxd4 16. exd4 Bd5 17. a5 Qc7 18. Nd2 {[#] Bxd5 is the strong threat.} Bxg2 19. Kxg2 Qc6+ 20. f3 Nf6 21. Rec1 Rc7 22. c4 Qa6 23. Kf2 Rfc8 24. c5 Qc6 25. Nc4 Nd7 26. Bc3 ({White should try} 26. Rc2 $11) 26... Qa6 (26... Nxc5 $1 $15 27. Ne5 (27. dxc5 $2 Qxc5+ 28. Ne3 Qh5 $17) 27... Qa6 28. dxc5 Bxc5+ 29. Ke1 Bb4 30. Qxa6 bxa6 31. Bxb4 Rxc1+ 32. Rxc1 Rxc1+ 33. Ke2 Rc2+ 34. Bd2 Rc5) 27. Bd2 $11 e5 28. Nxe5 {And now Qxa6 would win.} Qxe2+ 29. Kxe2 {Threatens to win with Nc4.} Nxe5 30. dxe5 Rxc5 31. Rxc5 Rxc5 {[%mdl 4096] Endgame KRB-KRB} 32. f4 Rb5 33. Rc1 Bc5 34. Kd3 g6 35. Bc3 h5 {The position is equal.} 36. Kc4 a6 37. Rd1 {aiming for Rd5.} Be7 38. h3 Rc5+ 39. Kb3 Rb5+ 40. Kc2 Kf8 41. g4 hxg4 42. hxg4 Ke8 43. Ra1 {Precision: White = 52%, Black = 75%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.16"]
[Round "5"]
[White "Praggnanandhaa R"]
[Black "Maghsoodloo, Parham"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2539"]
[BlackElo "2679"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,60,25,25,32,31,51,18,34,14,39,30,45,39,57,41,61,58,54,52,56,20,39,38,20,18,23,25,41,26,41,41,33,14,13,12,47,39,37,32,30,33,32,0,24,0,43]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a6 6. a4 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Ba7 7. O-O d6 8. Nbd2 (8. Re1 O-O 9. h3 h6 10. Nbd2 Re8 11. Nf1 Be6 12. Bxe6 Rxe6 13. Be3 Bxe3 14. Nxe3 d5 {½-½ (32) Anand,V (2768)-Grischuk,A (2766) Saint Louis 2018}) 8... h6 9. Re1 {LiveBook: 41 Games} Nh5 10. Nf1 Qf6 11. Ne3 Bxe3 12. Bxe3 $146 ({Predecessor:} 12. fxe3 Be6 13. Bd5 Nd8 {1-0 (39) Deszczynski,A (2380)-Zlatin,A (2259) Warsaw 2017}) 12... Nf4 13. Nd2 {[%cal Bf3d2,Bd2f1,Bf1e3,Be3c4][%mdl 32]} g5 14. d4 O-O {[%cal Re5d4]} 15. Nf1 Ne7 16. dxe5 dxe5 17. Bc5 Be6 18. Bxe7 Qxe7 19. Ne3 Bxc4 20. Nxc4 Rad8 21. Qc2 Qe6 22. Ne3 Rd7 23. Rad1 Rfd8 24. Rxd7 Rxd7 25. Rd1 Nh5 26. Nf5 Kh7 27. h3 Ng7 28. Ne3 Ne8 29. Nf5 Ng7 30. Ne3 Ne8 {Accuracy: White = 62%, Black = 28%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.16"]
[Round "5"]
[White "Van Foreest, Lucas"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "B56"]
[WhiteElo "2502"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,71,18,14,6,9,7,27,18,21,24,20,0,0,0,0,0,14,25,26,16,16,28,35,42,42,37,34,0,0,0,15,0,140,135,180,179,170,176,378,383,393,383,555,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f3 e5 7. Nb3 Be6 8. Nd5 Be7 9. Be3 O-O {LiveBook: 33 Games. B56: Classical Sicilian: Unusual Lines} 10. c3 (10. Qd2 a5 11. Bb6 Qd7 12. Bb5 Bd8 13. Bxa5 Bxa5 14. Nxf6+ gxf6 15. Nxa5 Rxa5 16. Qxa5 Nxa5 17. Bxd7 Bxd7 18. O-O-O {1-0 (60) Lu,S (2635)-Karthikeyan,M (2604) Bhubaneswar 2018}) 10... Bxd5 11. exd5 Nb8 $146 ({Predecessor:} 11... Na5 12. Qd3 Nxb3 13. axb3 Qd7 14. Be2 Bd8 15. b4 Bb6 16. Bxb6 axb6 {1-0 (50) Siigur,J (2433)-Schmidt,K (2171) ICCF email 2016}) 12. Be2 Nbd7 13. O-O Qc8 14. Bf2 Bd8 15. Kh1 Bb6 16. Bh4 Re8 17. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} a6 18. a5 Ba7 19. Ra4 Nh5 20. Rc4 $36 {[%mdl 2048] White is pushing.} Qb8 $1 21. g3 Nhf6 22. f4 exf4 23. Rcxf4 Be3 24. R4f3 Qd8 (24... b5 $11 {keeps the balance.}) 25. Bd3 $16 h6 26. Bxf6 $1 Nxf6 27. Bc2 Qd7 $2 (27... Ba7) 28. Qd3 $1 $18 {And now Rxf6 would win.} Bg5 {intending ...Qh3.} 29. Nd4 Qh3 {[#]} (29... g6 $142 30. Kg2 Qg4 31. Rxf6 Bxf6) 30. Nf5 $2 (30. g4 $1 $18 {[%mdl 512]} Qxg4 (30... Nxg4 31. Qh7+) 31. Rxf6 $1 {[%mdl 576] Remove Defender} gxf6 32. Qh7+ Kf8 33. Qh8+ Ke7 34. Re1+ Kd7 35. Ba4+ Kc7 36. Bxe8) 30... Re5 $11 {The position is equal.} (30... Ng4 {[#]} 31. Ne7+ $1 {[%mdl 512]} Bxe7 32. Qh7+ Kf8 33. Rxf7#) 31. g4 Qxg4 32. Rg1 Qh5 33. Ng3 Qg4 34. Nf5 ({Don't blunder} 34. Rxf6 $2 Bxf6 35. Ne4 (35. Qh7+ $2 Kf8 $19) 35... Qh4 $19) 34... Qh5 35. Ng3 Qg4 36. Nf5 {Accuracy: White = 81%, Black = 48%.} ({Don't go for} 36. Rxf6 $2 Bxf6 37. Ne4 (37. Qh7+ $2 Kf8 $19) 37... Qh4 $19) 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.16"]
[Round "5"]
[White "Saduakassova, Dinara"]
[Black "Bareev, Evgeny"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "2472"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,116,73,63,80,76,108,60,92,77,79,52,85,92,94,100,91,92,94,80,108,102,118,75,91,87,95,80,105,0,6,5,13,0,0,-44,-14,-27,-16,-36,-35,-53,-24,-36,-51,-98,-94,-116,-106,-104,-102,-93,-82,-115,-115,-189,-195,-177,-177,-200,-196,-191,-185,-165,-132,-133,-133,-125,-111,-127,-118,-118,-116,-112,-116,-171,-171,-258,-251,-268,-268,-455,-384,-506,-356,-29986,-29987,-29987,-29988,-29988,-29981,-29981,-29982,-29988,-29989,-29989,-29990]} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 g6 7. Nf3 Qa5 {A58: Benko/Volga Gambit: Lines with 5 bxa6} (7... Bg7 8. e4 Bxf1 9. Kxf1 d6 10. g3 O-O 11. Kg2 Na6 12. Qe2 Qb6 13. Rd1 Qb7 14. Rb1 Nd7 15. Bg5 Rfe8 16. a3 Nc7 17. Qc2 Nb6 18. a4 Rac8 19. b3 e6 20. dxe6 Nxe6 {1-0 (27) Jakovenko,D (2714)-Zvjaginsev,V (2673) Moscow 2016}) 8. Bd2 Bg7 9. e4 d6 10. Be2 O-O 11. O-O Nbd7 12. a4 {LiveBook: 4 Games} Qb6 13. Bxa6 Rxa6 {[#]} 14. Qc2 $146 Rc8 15. Nb5 Qb7 16. Na3 Rb8 17. Bc3 $1 Qb3 18. Qxb3 Rxb3 19. Nd2 Rb8 20. Nb5 Ne8 21. Bxg7 Kxg7 22. Nc4 Ne5 23. Ne3 $1 g5 24. b3 Rb7 25. Nc4 (25. h4 $16) 25... Nxc4 $11 26. bxc4 Nf6 27. f3 Nd7 28. Rab1 Rbb6 {[%mdl 1024] Black has compensation.} ({Reject} 28... Rxa4 $6 29. Nxd6 $1 {[%mdl 512]} Rxb1 30. Nf5+ Kf6 31. Rxb1 $14) 29. Ra1 Ne5 30. Rfc1 Ra5 31. Ra2 Kf6 32. Kf1 Nxc4 33. Rxc4 Rbxb5 $1 $15 {[%mdl 4096] Endgame KRR-KRR} 34. Ke2 Rb3 35. Kd2 e6 36. Kc2 Rb7 37. Ra3 Rba7 38. g3 {[#]} (38. Ra1 $17) 38... exd5 $1 $19 39. exd5 Ke5 40. h4 h6 ({Resist} 40... Kxd5 41. Rg4 $17) 41. hxg5 hxg5 42. Rg4 f6 {[%cal Bf7f6,Bf6f5][%mdl 32]} 43. Re4+ Kxd5 {White must now prevent ...c4.} 44. Rd3+ Kc6 45. Re6 Rd7 ({But not} 45... Rxa4 $6 46. Rdxd6+ Kb5 47. Rb6+ Kc4 48. Re4+ Kd5 49. Rxa4 $11) 46. Kb3 f5 47. Rg6 Ra8 48. Rf6 (48. Rd1 $17) 48... g4 49. f4 (49. Rxf5 {was worth a try.} d5 50. Rd1) 49... Rb8+ 50. Kc2 c4 51. Ra3 $2 (51. Rd4 Kc5 52. Rd1) 51... Kc5 52. a5 Rdb7 {And now ...Rb2+ would win.} 53. Ra2 $2 (53. a6 $19 Rb2+ 54. Kc1 Rb1+ 55. Kd2) 53... Rh7 {Black mates.} 54. Ra4 Rh2+ 55. Kc1 Rh1+ 56. Kc2 Re8 57. Kd2 Rh2+ 58. Kd1 Kb5 {Precision: White = 41%, Black = 79%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.16"]
[Round "5"]
[White "Kuipers, Stefan"]
[Black "Korobov, Anton"]
[Result "0-1"]
[ECO "B32"]
[WhiteElo "2470"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,74,23,9,14,64,24,49,1,13,21,27,20,63,51,35,-11,-12,-20,-13,-21,0,0,0,0,0,-20,-15,-35,-48,-122,-110,-145,-156,-141,-147,-156,-160,-122,-139,-277,-279,-237,-184,-473,-460,-460,-431,-387,-304,-475,-441,-615,-605]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 e6 6. Nc3 Nf6 7. Bd3 Be7 8. Qe2 {B33: Sicilian: Pelikan and Sveshnikov Variations} (8. Be3 Qc7 9. f4 d6 10. Qf3 a6 11. O-O O-O 12. a4 b6 13. g4 Re8 14. g5 Nd7 15. Qg3 Bf8 16. h4 Nb4 17. h5 Nc5 18. Nxc5 bxc5 19. g6 d5 20. gxf7+ Qxf7 {0-1 (59) Van Foreest,J (2600)-Iturrizaga Bonelli,E (2662) Vlissingen 2017}) 8... d6 9. O-O a6 10. Be3 Qc7 11. f4 b5 12. a4 b4 {LiveBook: 4 Games} 13. Nb1 {[%cal Bc3b1,Bb1d2,Bd2c4][%mdl 32]} O-O 14. N1d2 a5 15. Kh1 Bb7 16. Nc4 $146 ({Predecessor:} 16. Qf3 Ba6 17. g4 Bb7 18. g5 Nd7 19. Qh3 Rfe8 20. Kg1 Bf8 21. Qh4 g6 22. Rf3 Bg7 23. Raf1 f5 24. gxf6 Bxf6 {1-0 (42) Lagarde,M (2352)-Iwanesko,A (2101) Saint Affrique 2009}) 16... d5 17. Bb6 Qb8 18. exd5 Nxd5 19. Qf2 (19. f5 {is interesting.} e5 20. f6 Nxf6 21. Nc5 Nd4 22. Qxe5 Qxe5 23. Nxe5 Nd5 24. Ncd7) 19... g6 20. Bc5 Ba6 21. Rad1 Rd8 22. Ne5 Bxc5 $1 23. Nxc5 Bxd3 $1 24. Rxd3 Qc7 25. Rh3 Nf6 26. Ncd3 (26. c3 $15) 26... h5 $17 27. Re1 Rac8 28. c3 bxc3 29. bxc3 Ne7 30. c4 Nf5 31. Rf3 {[#]} (31. Qb2 $17 Rd4 32. c5) 31... Ng4 $1 $19 {[%cal Rg4f2]} 32. Qg1 Qe7 33. g3 $2 (33. Rff1) 33... Kg7 34. h3 Nxe5 35. Nxe5 f6 36. Nd3 (36. g4 $142 hxg4 37. Nxg6) 36... Rxc4 37. Qb6 Rd6 {Precision: White = 26%, Black = 72%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6"]
[White "Korobov, Anton"]
[Black "Bareev, Evgeny"]
[Result "1/2-1/2"]
[ECO "D19"]
[WhiteElo "2699"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,73,39,25,25,30,31,29,38,45,46,47,87,93,88,95,70,53,102,102,102,94,102,102,102,102,102,74,77,72,70,50,52,26,27,10,12,0,0,0,8,0,0,0,0,-7,-8,-7,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O O-O 9. Qe2 Nbd7 10. e4 Bg6 11. Bd3 h6 12. Rd1 a6 {D19: Slav Defence: 5 a4 Bf5 6 e3: Main line with 9 Qe2} 13. Bf4 {LiveBook: 10 Games} Qe7 14. h3 Rac8 {White has an edge.} 15. Rac1 {[#]} c5 $146 ({Predecessor:} 15... Rfe8 16. Bb1 Bxc3 17. Rxc3 Qb4 18. Ra3 Red8 19. Rc1 a5 20. Rc4 {½-½ (121) Lautier,J (2632)-Piket,J (2633) Monte Carlo 2000}) 16. e5 {[#] aiming for Bxg6.} Bxd3 17. Qxd3 Bxc3 18. exf6 ({Much worse is} 18. bxc3 Nd5 $11) 18... Qxf6 {[#]} 19. Bd6 $1 $36 {[%cal Rd6f8][%mdl 2048] White is really pushing.} Bxb2 20. Rc2 Bxd4 {And now ...Rfd8 would win.} 21. Bxf8 Rxf8 22. Nxd4 {Nc6! is the strong threat.} cxd4 23. Qxd4 Qxd4 24. Rxd4 $14 {[%mdl 4096] Endgame KRR-KRN} Nf6 25. Rc7 {[%mdl 1024] White has strong compensation.} b6 26. Ra7 a5 27. Rb7 Nd5 28. f4 g6 29. g4 Kg7 {The position is equal.} 30. f5 {Black must now prevent fxe6.} Kf6 31. fxe6 fxe6 32. Kh2 Rc8 33. Rd3 Rc4 34. Rf3+ Ke5 35. Ra3 h5 36. gxh5 gxh5 37. Rg7 {Accuracy: White = 53%, Black = 76%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6"]
[White "Kovalev, Vladislav"]
[Black "Saduakassova, Dinara"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2687"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,137,12,18,5,33,9,12,0,33,16,23,0,22,-17,0,-1,0,-19,11,14,17,11,37,28,32,18,55,29,36,47,50,16,43,33,28,24,28,25,28,17,28,23,22,16,19,15,16,15,15,15,15,16,22,16,27,15,16,24,24,24,35,35,35,35,35,35,35,35,197,163,174,172,170,175,247,247,247,240,256,202,191,143,150,117,339,339,331,331,311,306,482,482,466,456,567,0,163,0,559,569,568,562,673,655,559,499,1783,1700,2843,2633,2415,2175,6041,5185,3270,2754,6029,5953,29976,29974]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2 Qe7 6. Nc3 Nxc3 7. dxc3 Qxe2+ 8. Bxe2 Nc6 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves} 9. Be3 Be7 10. O-O-O O-O {LiveBook: 3 Games. The position is equal.} 11. Rde1 $146 ({Predecessor:} 11. Rhe1 Bf6 12. Nd2 Re8 13. Bf3 Ne5 14. Bf4 Kf8 15. Bd5 c6 16. Bb3 {0-1 (66) Kramnik,V (2800)-Caruana,F (2784) Berlin 2018}) 11... Bf6 12. h4 Bg4 13. Bg5 Bd8 14. Kd2 h6 {Strongly threatening ...Bxf3.} 15. Be3 Bf6 16. h5 a6 17. Nh2 Be6 18. b3 d5 19. Nf3 Rad8 20. Nd4 Nxd4 21. cxd4 Be7 22. Rhg1 Bf5 23. c3 Rfe8 24. g4 Be4 25. a4 Kf8 26. f3 Bh7 27. Bd3 Bxd3 28. Kxd3 Bd6 29. Ref1 Re6 30. Bd2 Rde8 31. Rg2 c6 32. f4 f5 33. gxf5 Rf6 $1 34. Rfg1 Re7 35. Rg6 {Threatens to win with Rxf6+.} Ref7 $1 36. Ke2 Be7 37. Rxf6 Rxf6 $11 {[%mdl 4096] Endgame KRB-KRB} 38. Kf3 Rxf5 39. Kg4 Rf7 40. Re1 Bf6 41. Bc1 Rd7 42. Ba3+ Kf7 $1 43. Kf5 Rd8 $2 ({Black should try} 43... Bd8 $14) 44. Re6 $1 $18 Bh4 45. Bd6 Rd7 46. Be5 Be7 (46... Bf2 $142 47. b4 Bh4) 47. Rg6 Bf8 48. Kg4 Ke8 49. f5 Rf7 50. f6 gxf6 51. Bxf6 Kd7 $2 (51... a5 $16 52. c4 Kd7 53. cxd5 cxd5) 52. a5 $1 Ke8 53. Kf5 Kd7 54. c4 $1 dxc4 (54... c5 {was called for.}) 55. bxc4 {[%cal Bb3c4,Bc4c5][%mdl 32]} Kd6 56. Ke4 Kd7 57. Kf5 $2 (57. c5 Rh7 58. Ke5) 57... Kd6 $1 {[#]} 58. Ke4 $2 (58. Kg4 $1) 58... Kd7 59. c5 Rh7 60. Kf5 Rf7 {[#]} 61. Ke5 $1 Rh7 62. Rg8 Ke8 (62... Rf7 $142 63. Rh8 Ke8) 63. Ke6 Rf7 64. Rh8 Rc7 65. Kf5 Rd7 66. Kg6 Rf7 67. Rg8 Rd7 68. Be5 Rd5 69. Kf6 {Precision: White = 77%, Black = 42%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6"]
[White "Maghsoodloo, Parham"]
[Black "Chigaev, Maksim"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2679"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "162"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,162,0,0,0,1,0,0,0,0,0,14,0,21,25,47,39,60,57,64,56,56,29,102,23,73,39,93,-15,-18,-12,-30,-75,-59,-148,-138,-239,-238,-247,-234,-248,-246,-245,-245,-239,-147,-147,-156,-166,-156,-154,-166,-160,-154,-164,-163,-257,-243,-257,-235,-250,-241,-233,-242,-297,-285,-280,-311,-281,-275,-306,-295,-306,-306,-301,-206,-286,-284,-420,-314,-367,-223,-365,-335,-472,-465,-433,-282,-589,-570,-516,-401,-463,-463,-1575,-1671,-1243,-625,-4071,-3875,-3450,-2389,-2589,-1430,-5073,-3823,-29957,-29958,-29958,-29959,-29959,-29960,-29961,-29962,-29963,-29964,-29964,-29965,-29967,-29966,-29967,-29964,-29966,-29964,-29965,-29966,-29967,-29968,-29967,-29968,-29969,-29970,-29970,-29971,-29971,-29972,-29976,-29971,-29966,-29959]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 O-O 10. Be3 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Bg4 11. h3 Bh5 12. Qc2 Nxc3 (12... Bg6 13. Qb3 Ne7 14. O-O c6 15. Bd3 Kh8 16. Nh4 c5 17. Nxg6+ fxg6 18. Bxe4 cxd4 19. Nxd5 Nxd5 {1-0 (51) Jones,G (2677)-Aronian,L (2780) Douglas 2018}) 13. bxc3 f6 {LiveBook: 4 Games} 14. exf6 Qxf6 15. Be2 Bg6 16. Qb3 $146 Qd6 17. O-O Rae8 18. a4 a6 19. Rae1 Kh8 20. Qa2 Qd8 21. Bg5 Qd6 22. Bc1 Qd8 23. Nh2 Be4 (23... Ba5 $11 24. Qb3 Bb6) 24. Ng4 (24. Bh5 $16) 24... Rf7 25. Ne3 Ne7 (25... Ba5 $14 26. Bd2 (26. f3 Bg6 $15) 26... Rff8) 26. f3 ({Better is} 26. a5 $16 Ba7 27. Qb3) 26... Bg6 $11 27. Ba3 c6 $36 {[%mdl 2048] White is under pressure.} 28. Qd2 Bc7 $1 29. Bd3 (29. Ng4 $15) 29... Bg3 30. Re2 (30. Rd1 $17) 30... Bxd3 $1 $19 31. Qxd3 Ng6 {[%cal Be7g6,Bg6f4,Bf4e2][%mdl 32]} 32. Ng4 Nf4 $1 {[%cal Rf4d3][%mdl 64] Double Attack} 33. Rxe8+ Qxe8 34. Qc2 Ne2+ 35. Kh1 Bf4 36. Rd1 h5 37. Ne5 Ng3+ 38. Kg1 Bxe5 39. dxe5 Qxe5 40. Bb2 (40. Bb4 {was worth a try.}) 40... Ne2+ 41. Kh1 Qe3 42. Bc1 Qf2 {Threatens to win with ...Ng3+.} 43. Qd3 {Black must now prevent Be3.} Re7 $1 ({Don't play} 43... Ng3+ 44. Kh2) 44. Kh2 Re6 45. Bd2 Ng3 46. Qd4 Nf1+ 47. Kh1 Qxd4 $1 48. cxd4 Nxd2 49. Rxd2 {[%mdl 4096] Endgame KR-KR} Re1+ 50. Kh2 Ra1 51. Kg3 (51. Rb2 $142 Rxa4 52. Rxb7) 51... Kh7 52. Kf4 Kg6 53. Ke5 (53. Rb2 $142 Rxa4 54. Rxb7) 53... Rxa4 54. g4 (54. f4 $142) 54... hxg4 55. hxg4 Ra3 56. Rb2 $2 (56. f4 {is tougher.}) 56... Rxf3 57. Rxb7 Rc3 58. Ra7 {[#]} a5 $1 59. Rxa5 (59. Kf4 $142 a4 60. g5) 59... Kg5 $1 {[%cal Rg5g4]} 60. Ra1 g6 61. Rg1 Rc4 62. Ra1 c5 $1 63. dxc5 Rxc5 64. Ra6 Rc4 65. Kxd5 Rxg4 {Black mates.} 66. Ke5 Rb4 67. Ra1 Kh5 68. Rh1+ Rh4 69. Rf1 g5 70. Kf5 Rh3 71. Ke4 Kg4 72. Rg1+ Rg3 73. Rf1 Ra3 74. Rg1+ {[#]} Kh4 $1 75. Rh1+ Rh3 76. Rf1 g4 {[%cal Bg5g4,Bg4g3][%mdl 32]} 77. Kf4 {[#]} Rh2 $1 78. Ra1 Rf2+ 79. Ke3 g3 80. Rh1+ Kg4 81. Rh7 Rf1 {Accuracy: White = 35%, Black = 70%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6"]
[White "L'Ami, Erwin"]
[Black "Gledura, Benjamin"]
[Result "0-1"]
[ECO "C92"]
[WhiteElo "2643"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,98,2,29,-48,-53,-36,0,-3,39,-9,-3,0,0,9,11,13,26,0,0,0,12,0,20,17,32,0,25,-25,0,0,0,0,0,-90,-86,-89,-75,-75,-83,-79,-94,-225,-230,-222,-194,-200,-202,-320,-325,-359,-348,-343,-319,-333,-283,-329,-332,-341,-321,-386,-381,-475,-456,-469,-463,-828,-854,-941,-958,-943,-907,-881,-852,-937,-897]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Bb7 10. d4 Re8 11. Nbd2 Bf8 12. Bc2 g6 13. b3 d5 {LiveBook: 13 Games. C92: Closed Ruy Lopez: 9...Be6, Karpov and Flohr-Zaitsev Variations} 14. Bb2 (14. exd5 $11 Nxd5 15. Ne4) (14. dxe5 Nxe5 15. Nxe5 Rxe5 16. f4 Bc5+ 17. Kh2 Re8 18. e5 Nh5 19. Nf3 Bf2 20. g4 Bxe1 21. Qxe1 {0-1 (32) Kokarev,D (2550)-Korotylev,A (2600) Serpukhov 2007}) 14... exd4 $146 ({Predecessor:} 14... dxe4 15. Nxe4 exd4 16. cxd4 Nb4 17. d5 Nfxd5 18. Qd4 f6 19. Bb1 c5 20. Nxc5 Rxe1+ 21. Nxe1 {0-1 (36) Kaiumov,D (2305)-Veingold,A (2445) Moscow (Russia) 1981}) 15. cxd4 Nb4 {[%cal Rd5e4] Black is slightly better.} 16. e5 Nh5 17. a3 Nxc2 18. Qxc2 Nf4 19. b4 a5 20. Bc3 axb4 21. axb4 (21. Bxb4 {looks sharper.} Bc8 22. Bxf8 Rxf8 23. Qc3 Qe7 24. Nf1) 21... Rxa1 22. Rxa1 Bc8 23. Nb3 Bf5 24. Qd1 Be4 25. Kh2 Qd7 26. Ra6 Qc8 27. Rc6 Re6 28. Rxe6 Qxe6 29. Ng5 (29. Nc5 $11 {keeps the balance.} Bxc5 30. dxc5) 29... Qf5 $17 30. Qg4 Be7 $40 {[%mdl 128] Black has strong attack.} ({Reject} 30... Bxg2 $6 31. Qxf5 gxf5 32. Bd2 $11) 31. Nxe4 dxe4 32. Qxf5 gxf5 {[%mdl 4096] Endgame KBN-KBN} 33. Nc1 (33. Na5 $17) 33... Nd5 $19 34. Na2 c6 35. Bd2 f6 36. Kg3 (36. exf6 {is a better defense.} Bxf6 37. Kg1) 36... Kf7 37. f4 Ke6 38. Kf2 h5 39. g3 Nb6 40. Nc1 Kd5 41. Nb3 Nc4 {[%cal Rf6e5]} 42. Bc3 {[#]} Na3 $1 43. Na1 Kc4 {Black is clearly winning.} 44. Bb2 Kxb4 45. d5 (45. Ke2 $142 Nc4 46. d5 Nxb2 47. dxc6) 45... cxd5 {[%cal Bc6d5,Bd5d4][%mdl 32]} 46. exf6 Bc5+ 47. Ke1 d4 48. f7 Kc4 49. Kd1 Bf8 {Precision: White = 35%, Black = 73%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6"]
[White "Keymer, Vincent"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "A18"]
[WhiteElo "2500"]
[BlackElo "2502"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,65,44,27,26,0,-1,-22,-20,-33,18,12,36,36,39,41,64,36,31,21,33,28,37,44,31,41,51,51,45,8,14,0,0,6,8,4,2,12,25,0,18,1,6,4,0,2,46,20,22,25,27,27,33,24,29,0,0,0]} 1. c4 e6 $146 ({Predecessor:} 1... Nf6 2. Nc3 {1-0 (73) Kryvoruchko,Y (2703)-Debashis,D (2518) Dubai 2018}) 2. Nc3 Nf6 3. e4 d5 4. cxd5 exd5 5. e5 Ne4 6. Nf3 ({Much weaker is} 6. Nxe4 dxe4 7. Qa4+ Nc6 $15) 6... Be7 {A18: English Opening: Flohr-Mikenas System (1 c4 Nf6 2 Nc3 e6 3 e4)} 7. Qa4+ Bd7 8. Qb3 Nc5 9. Qd1 ({Predecessor:} 9. Qc2 Bg4 10. d4 Ne6 11. Be3 Bxf3 12. gxf3 c5 13. dxc5 d4 14. O-O-O {1-0 (73) Kryvoruchko,Y (2703)-Debashis,D (2518) Dubai 2018}) 9... Bf5 ({Black should try} 9... d4 $15 10. Nxd4 Be6 11. Bb5+ (11. Nxe6 Nxe6 12. Bb5+ c6 $11) 11... c6 12. Nxe6 Nxe6) 10. d4 $11 Ne4 11. Bd3 $36 {[%mdl 2048] White has the initiative.} O-O 12. O-O c5 13. Be3 (13. dxc5 {looks sharper.} Nxc3 14. bxc3 Bxd3 15. Qxd3 Na6 16. Rd1) 13... cxd4 14. Nxd4 Nxc3 15. bxc3 Bxd3 16. Qxd3 Nd7 17. Nf3 Nc5 18. Bxc5 Bxc5 19. Rfd1 Rc8 20. Rab1 Bb6 21. Rb5 h6 22. Rxd5 Qc7 23. Rc1 Qc4 24. Rc2 Rc6 25. g3 Rfc8 26. Kg2 Qxd3 27. Rxd3 Ba5 28. Rd7 Rxc3 29. Rxc3 Rxc3 30. Rxb7 Rc2 31. Nd4 Rd2 32. Nb3 Rxa2 33. Rxa7 {Accuracy: White = 41%, Black = 73%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6"]
[White "Paehtz, Elisabeth"]
[Black "Praggnanandhaa R"]
[Result "1/2-1/2"]
[ECO "E01"]
[WhiteElo "2477"]
[BlackElo "2539"]
[Annotator "ChessBase"]
[PlyCount "69"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 4. Bg2 {[%emt 0:00:00]} Bb4+ {[%emt 0:00:06]} 5. Bd2 {[%emt 0:00:00]} a5 {[%emt 0:00:05]} 6. Nf3 {[%emt 0:00:07]} dxc4 {[%emt 0:00:06]} 7. a3 {[%emt 0:00:25]} Bxd2+ {[%emt 0:01:38]} 8. Nbxd2 {[%emt 0:00:15]} b5 {[%emt 0:00:39]} 9. b3 {[%emt 0:00:09]} cxb3 {[%emt 0:00:37]} 10. Qxb3 {[%emt 0:00:05]} c6 {[%emt 0:02:58]} 11. Qb2 {[%emt 0:00:13]} O-O {[%emt 0:05:17]} 12. O-O {[%emt 0:00:09]} Bb7 {[%emt 0:06:23]} 13. Ne5 {[%emt 0:06:02]} Qd6 {[%emt 0:03:38]} 14. Rfc1 {[%emt 0:01:45]} Rc8 {[%emt 0:02:48]} 15. Nb3 {[%emt 0:08:39]} Nbd7 {[%emt 0:08:29]} 16. Nxd7 {[%emt 0:22:31]} Nxd7 {[%emt 0:01:45]} 17. Nc5 {[%emt 0:00:19]} Rab8 {[%emt 0:08:01]} 18. Nxd7 {[%emt 0:08:41]} Qxd7 {[%emt 0:00:39]} 19. Rc5 {[%emt 0:00:05]} Ba6 {[%emt 0:01:40]} 20. e3 {[%emt 0:02:24]} Qd8 {[%emt 0:01:51]} 21. Qc2 {[%emt 0:12:12]} Qb6 {[%emt 0:02:28]} 22. Rc1 {[%emt 0:06:50]} b4 {[%emt 0:03:26]} 23. axb4 {[%emt 0:00:10]} axb4 {[%emt 0:01:37]} 24. Qb3 {[%emt 0:00:10]} Be2 {[%emt 0:07:18]} 25. h3 {[%emt 0:08:53]} Qa6 {[%emt 0:04:27]} 26. Bxc6 {[%emt 0:04:01]} Bd3 {[%emt 0:10:58]} 27. Bd7 {[%emt 0:11:03]} Rd8 {[%emt 0:01:16]} 28. Ba4 {[%emt 0:01:34]} Be4 {[%emt 0:03:53]} 29. Bc6 {[%emt 0:00:34]} Qd3 {[%emt 0:04:07]} 30. Qb2 {[%emt 0:02:13]} Bf5 {[%emt 0:03:27]} 31. Bg2 {[%emt 0:00:54]} h6 {[%emt 0:08:10]} 32. R5c4 {[%emt 0:01:17]} b3 {[%emt 0:05:39]} 33. Bf1 {[%emt 0:00:14]} Qe4 {[%emt 0:00:16]} 34. Bg2 {[%emt 0:00:04]} Qd3 {[%emt 0:00:15]} 35. Bf1 {[%emt 0:09:12]} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6"]
[White "Kuipers, Stefan"]
[Black "Esipenko, Andrey"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2470"]
[BlackElo "2584"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,69,28,-12,16,3,33,16,15,17,52,27,60,48,51,52,47,45,56,45,77,69,72,63,70,52,46,50,86,84,101,108,143,139,152,137,130,47,52,48,36,39,68,6,16,0,67,69,62,65,78,45,48,49,61,39]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Bg5 h6 7. Bh4 g5 8. Bg3 O-O {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 9. Bb3 {LiveBook: 4 Games} (9. a4 a6 10. Qd2 Nh5 11. h4 Nxg3 12. fxg3 g4 13. Qxh6 gxf3 14. Qg6+ Kh8 15. Qh6+ Kg8 16. Qg6+ Kh8 {½-½ (16) Vachier Lagrave,M (2796)-Karjakin,S (2781) Paris 2017}) 9... a6 10. Nbd2 Ba7 {The position is equal.} 11. Qe2 Nh5 12. h3 $146 {[%cal Bh2h3,Bh3h4,Bh4h5][%mdl 32]} ({Predecessor:} 12. O-O-O Qf6 13. h3 b5 14. Bh2 {0-1 (29) Koronowski,H (1991)-Giesemann,S (2079) GER email 2013}) 12... Ne7 13. Nh2 $1 Nf4 14. Bxf4 gxf4 15. g3 {And now Qh5 would win.} Ng6 16. h4 Qf6 17. Qf3 Kh8 18. h5 Ne7 19. gxf4 Qxf4 20. Qxf4 exf4 21. Nhf3 b5 22. Rh4 Be6 23. Rxf4 Bxb3 24. axb3 f5 25. Kf1 Bb6 26. Re1 (26. e5 $16) 26... fxe4 $14 27. Rxf8+ Rxf8 28. dxe4 d5 29. Kg2 (29. c4 $14) 29... Rg8+ $11 30. Kf1 ({White should play} 30. Kh3 $11) 30... Rf8 $14 31. c4 dxe4 32. Rxe4 Ng8 33. cxb5 axb5 34. Re5 Nf6 35. Rxb5 {Accuracy: White = 66%, Black = 57%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6.3"]
[White "L'Ami, Erwin"]
[Black "Gledura, Benjamin"]
[Result "*"]
[WhiteElo "2643"]
[BlackElo "2615"]
[PlyCount "0"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

 *

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6.4"]
[White "Keymer, Vincent"]
[Black "Van Foreest, Lucas"]
[Result "*"]
[WhiteElo "2500"]
[BlackElo "2502"]
[PlyCount "0"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

 *

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6.5"]
[White "Maghsoodloo, Parham"]
[Black "Chigaev, Maksim"]
[Result "*"]
[WhiteElo "2679"]
[BlackElo "2604"]
[PlyCount "0"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

 *

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.18"]
[Round "6.7"]
[White "Kuipers, Stefan"]
[Black "Esipenko, Andrey"]
[Result "*"]
[WhiteElo "2470"]
[BlackElo "2584"]
[PlyCount "0"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

 *

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.19"]
[Round "7"]
[White "Bareev, Evgeny"]
[Black "Kovalev, Vladislav"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2650"]
[BlackElo "2687"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,51,10,8,6,26,0,21,12,0,6,17,14,22,26,26,21,28,0,0,0,36,40,38,25,25,23,42,45,41,46,42,40,25,0]} 1. d4 Nf6 2. c4 (2. Nf3 e6 {0-1 (120) Dreev,A (2670)-Ghaem Maghami,E (2537) St Petersburg 2018}) 2... e6 3. Nf3 Bb4+ 4. Nbd2 O-O $146 (4... d5 5. e3 O-O 6. a3 {0-1 (120) Dreev,A (2670)-Ghaem Maghami,E (2537) St Petersburg 2018}) ({Predecessor:} 4... b6 5. e3 Bb7 6. Bd3 O-O 7. O-O d5 8. a3 Be7 9. b3 c5 10. cxd5 exd5 11. Bb2 {½-½ (38) Solana Suarez,E (2335)-Giffard,N (2380) Las Palmas 1993}) 5. a3 Be7 6. e3 d5 7. Bd3 (7. b3 b6 8. Bb2 Bb7 9. Bd3 Nbd7 {0-1 (120) Dreev,A (2670)-Ghaem Maghami,E (2537) St Petersburg 2018}) 7... b6 8. O-O Nbd7 9. b3 Bb7 10. Bb2 c5 11. cxd5 {E14: Queen's Indian: Classical Variation (4 e3)} exd5 (11... Nxd5 12. Rc1 a6 13. Bb1 Rc8 14. Qe2 b5 15. Rfd1 cxd4 16. Nxd4 Rxc1 17. Rxc1 Qa8 18. N2f3 N5f6 19. h3 Rc8 20. Qe1 {0-1 (120) Dreev,A (2670)-Ghaem Maghami,E (2537) St Petersburg 2018}) 12. Qe2 Re8 ({Predecessor:} 12... a6 13. Rfd1 {½-½ (38) Solana Suarez,E (2335)-Giffard,N (2380) Las Palmas 1993}) 13. Rfd1 {The position is equal.} a6 14. Ne5 ({Predecessor:} 14. Nf1 Bd6 15. Ng3 g6 16. dxc5 bxc5 17. b4 {½-½ (38) Solana Suarez,E (2335)-Giffard,N (2380) Las Palmas 1993}) 14... Bd6 {[%cal Rd7e5]} 15. Nxd7 Nxd7 ({Don't blunder} 15... Qxd7 $2 16. dxc5 Be5 17. Bxe5 $18) 16. Nf3 Qe7 17. h3 g6 18. dxc5 bxc5 19. b4 d4 (19... c4 $5 {[%cal Rc4d3]} 20. Bc2 Ne5 $11) 20. bxc5 Nxc5 {[%cal Rd4e3]} 21. Bxd4 Nb3 22. Ra2 Bxa3 23. Bc4 Nxd4 24. Rxd4 Bc5 {[#] Threatens to win with ...Bxf3.} 25. Rf4 Rf8 26. Bxa6 {Accuracy: White = 58%, Black = 46%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.19"]
[Round "7"]
[White "Gledura, Benjamin"]
[Black "Keymer, Vincent"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2615"]
[BlackElo "2500"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,65,15,16,18,10,10,12,18,24,14,17,16,13,0,4,-11,12,13,4,13,31,31,31,29,33,28,67,66,56,64,56,78,28,43,223,221,224,224,216,210,218,219,218,91,89,85,142,137,143,143,258,258,629,609,870,868,808,803]} 1. Nf3 d5 2. g3 ({Predecessor:} 2. c4 c6 3. g3 Nf6 4. Bg2 Bg4 5. O-O Nbd7 6. cxd5 cxd5 7. h3 Bh5 8. Nc3 e6 {½-½ (65) Saifullin,R (2094)-Kudojarov,M (1936) Sterlitamak 2012}) 2... c6 3. Bg2 Nf6 4. O-O Bg4 5. d4 $146 (5. h3 Bh5 6. d4 {½-½ (31) Svidler,P (2768)-Karjakin,S (2753) Wijk aan Zee 2018}) 5... e6 6. h3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} Bh5 7. c4 Nbd7 8. cxd5 {The position is equal.} cxd5 (8... exd5 9. Ne5 Ne4 10. Nd2 Nxd2 11. Bxd2 Nxe5 12. dxe5 Bc5 13. Kh2 O-O {½-½ (31) Svidler,P (2768)-Karjakin,S (2753) Wijk aan Zee 2018}) 9. Nc3 Be7 10. Ne5 O-O ({Predecessor:} 10... Nxe5 11. dxe5 Nd7 12. f4 f5 13. Qb3 Qb6+ 14. Qxb6 Nxb6 {½-½ (65) Saifullin,R (2094)-Kudojarov,M (1936) Sterlitamak 2012}) 11. g4 Bg6 $1 12. f4 Bd6 13. Qb3 Nb6 14. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Rc8 15. f5 exf5 16. gxf5 Bh5 17. Bg5 $36 {[%mdl 2048] White fights for an advantage.} Re8 18. a5 Nc4 19. Nxd5 {[%cal Bc3d5,Bd5f4,Bf4h5][%mdl 32]} Nxe5 20. dxe5 Rxe5 21. e4 {And now Nf4 would win.} h6 $2 (21... Re8 $1 $14) 22. Bxf6 $1 $18 gxf6 {[#]} 23. Nf4 $1 {[%mdl 64] Trapped Piece} ({Not} 23. Qxb7 Be2 $14) 23... Rxa5 24. Nxh5 Rxa1 25. Rxa1 Be5 26. Kh1 ({Don't play} 26. Qxb7 $6 Rc2 $16) (26. Rd1 $18 {has better winning chances.} Qc7 27. Bf3) 26... Qd2 $16 {( -> ...Rc1+)} 27. Qd1 Qxd1+ ({Black should try} 27... Qxb2 28. Rb1 (28. Rxa7 $2 Rc1 $19) 28... Qc2) 28. Rxd1 Kf8 29. Bf1 {Threatens to win with Rd7.} Rc2 {[#]} (29... Ke7 $16 30. Rd2 Rc1) 30. Rd7 $1 $18 Rxb2 $2 (30... b5 31. Rxa7 Rxb2) 31. Bc4 {White is clearly winning.} b5 32. Rxf7+ Ke8 33. Be6 {Accuracy: White = 75%, Black = 45%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.19"]
[Round "7"]
[White "Chigaev, Maksim"]
[Black "Paehtz, Elisabeth"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2604"]
[BlackElo "2477"]
[Annotator "TA RC"]
[PlyCount "101"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,101,41,43,47,35,36,85,66,63,24,22,22,27,27,27,29,39,40,40,8,25,17,28,31,24,21,26,14,14,15,19,22,34,34,28,14,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,31,99,99,99,99,113,99,104,111,114,111,111,111,111,111,118,114,118,118,139,139,139,139,139,139,99,99,1730,976,6370,6087,5512,5405,1466,877]} 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 a6 6. h3 g6 7. g4 Bg7 8. Bg2 h5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} (8... O-O 9. Be3 Nc6 10. Qd2 Bd7 11. O-O-O Rc8 12. Nde2 b5 13. Nd5 a5 14. Bb6 Qe8 15. Kb1 Rb8 16. Be3 {½-½ (33) Radjabov,T (2738)-Smirin,I (2655) Baku 2015}) 9. g5 Nfd7 {LiveBook: 14 Games} 10. Nde2 Nc6 {White is slightly better.} 11. f4 Nb6 $146 ({Predecessor:} 11... O-O 12. Be3 Rb8 13. O-O Nc5 14. Qe1 f6 {½-½ (46) Blaich,G-Geyer,B Eppingen 1988}) 12. O-O e6 13. e5 (13. a4 {keeps more tension.} d5 14. a5 Nc4 15. exd5 exd5 16. Nxd5 O-O 17. c3) 13... dxe5 14. Bxc6+ bxc6 15. Qxd8+ Kxd8 16. fxe5 Bxe5 17. Rxf7 {Threatens to win with Bf4.} Ke8 18. Rf2 Nd5 19. Bd2 Rf8 20. Rxf8+ Kxf8 21. Na4 Rb8 22. c4 Nb6 23. Rf1+ Kg7 24. Nxb6 Rxb6 25. b3 Rb7 26. h4 Rf7 (26... Bb8 $11 {keeps the balance.}) 27. Bc3 $16 Bxc3 28. Nxc3 Rxf1+ 29. Kxf1 {[%mdl 4096] Endgame KB-KN} Kf7 30. Ne4 Ke7 31. Ke2 e5 32. b4 Bg4+ 33. Kd3 Bf5 34. a3 (34. a4 $16) 34... Bc8 (34... c5 $1 $14) 35. Nc5 Kd6 36. Ke3 Kc7 37. Ne4 Bh3 38. Nd2 Kd6 39. Kd3 Bg4 40. Ne4+ Kc7 41. Nc5 Bc8 42. a4 {[%cal Ba3a4,Ba4b5][%mdl 32]} Kd6 43. Kc3 Kc7 44. b5 cxb5 45. cxb5 axb5 46. axb5 Bf5 47. Kc4 {[#] Strongly threatening Kd5.} Kb6 $2 {[%mdl 8192]} (47... Kd6 $16) 48. Na4+ {White is clearly winning.} Ka5 49. Nc3 e4 50. Kd4 Kb6 51. Nxe4 {Precision: White = 79%, Black = 47%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.19"]
[Round "7"]
[White "Esipenko, Andrey"]
[Black "Korobov, Anton"]
[Result "1-0"]
[ECO "D43"]
[WhiteElo "2584"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,81,-2,0,56,11,42,-55,31,0,195,205,197,175,186,143,248,259,245,226,233,233,247,240,235,223,214,223,255,231,238,179,254,241,256,191,180,168,244,256,255,223,283,280,276,266,272,253,1354,1261,1352,1345,1325,1328,1170,876,856,818]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 h6 6. Bh4 dxc4 7. e4 g5 8. Bg3 b5 9. Be2 Bb7 10. Ne5 {D43: Semi-Slav: 5 Bg5 h6} Nbd7 11. O-O Bg7 12. Nxf7 Kxf7 13. e5 Nd5 14. Ne4 $1 {[%cal Re4d6] LiveBook: 15 Games. next Nd6+ is good for White.} Qb6 ({Black should try} 14... Bc8 $11) 15. Nd6+ $1 $14 Ke7 $1 {White must now prevent ...c5.} 16. a4 {[#]} (16. Bg4 $14) 16... a5 $146 (16... Raf8 $15 17. Qb1 Qxd4 18. Nxb7 Qb6) ({Predecessor:} 16... Raf8 17. Bf3 a6 18. Bxd5 cxd5 19. axb5 axb5 {½-½ (51) Grischuk,A (2767)-Ding,L (2769) Berlin 2018}) 17. Bf3 Rhf8 $2 (17... Ba6 $1 $11) 18. Bxd5 $1 $18 cxd5 19. axb5 Rf5 20. Kh1 Kf8 (20... Raf8 $16) 21. f4 $1 {[%cal Rf4g5]} Kg8 22. Nxf5 exf5 23. fxg5 Nf8 24. gxh6 ({Weaker is} 24. Rxf5 Bc8 $16) 24... Qxh6 25. Rxf5 Bc8 26. Rf1 Be6 27. Qe1 Qg6 28. Qd2 ({Much less strong is} 28. Rxa5 $6 Rxa5 29. Qxa5 Qd3 $16) 28... Nd7 (28... Qd3 {is a better defense.} 29. Qf2 Ng6) 29. Bh4 Bh6 30. Qe1 Qe4 31. Qf2 Kh7 (31... Qe3 $142 32. Qxe3 Bxe3) 32. Ra3 $1 Rf8 33. Bf6 $1 Nxf6 34. exf6 Bg5 {[#]} 35. b6 $1 Rxf6 {[#]} 36. Rf3 $1 {[%cal Rf3f6]} Rxf3 $2 (36... Bh4 37. Qg1 Rxf3 38. Rxf3 Bc8) 37. Qxf3 {White is clearly winning.} Qxd4 38. Qg3 Bf6 39. b7 Be5 {[#]} 40. b8=Q $1 {[%mdl 512]} Bxg3 (40... Bxb8 41. Qxb8) 41. hxg3 {Precision: White = 80%, Black = 37%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.19"]
[Round "7"]
[White "Praggnanandhaa R"]
[Black "Kuipers, Stefan"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2539"]
[BlackElo "2470"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,45,0,0,-1,29,29,34,31,28,27,110,112,115,105,165,162,133,143,189,186,562,549]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. dxc5 Bxc5 10. Bd3 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4} (10. Ne2 O-O 11. Ned4 Qb6 12. c3 b4 13. Bd3 a5 14. O-O Ba6 15. Kh1 Bxd3 16. Qxd3 Qa6 17. Qc2 bxc3 18. bxc3 {½-½ (31) Dominguez Perez,L (2739)-So,W (2788) Saint Louis 2017}) 10... Qb6 11. Bf2 h6 12. O-O O-O 13. a3 Ra7 {LiveBook: 7 Games} 14. h3 f6 15. exf6 Nxf6 {[#]} 16. Rae1 $146 ({Predecessor:} 16. b4 Bxf2+ 17. Qxf2 Qb8 {½-½ (43) Brkic,A (2565)-Schneider Zinner,H (2393) St Veit 2017}) 16... Nh5 17. Ne2 b4 (17... Nf6 $11) 18. axb4 $16 Bxf2+ 19. Rxf2 Nxb4 (19... Rd7 $16 {was necessary.}) 20. Bg6 $18 Nf6 21. Ned4 Re7 22. Ne5 {[#] Hoping for c3.} Nd7 $2 (22... a5 23. g4 Ne4 24. Bxe4 dxe4 25. Rxe4 Rd8) 23. c3 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.19"]
[Round "7"]
[White "Van Foreest, Lucas"]
[Black "Maghsoodloo, Parham"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2502"]
[BlackElo "2679"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,94,31,35,25,20,27,28,18,37,0,0,0,12,0,0,0,0,0,5,0,80,57,64,1,56,0,53,68,71,57,108,118,104,113,118,122,111,131,133,128,128,132,146,133,131,131,137,129,131,131,139,128,139,139,140,129,157,145,141,146,155,165,138,148,186,136,141,157,184,80,129,47,52,45,41,52,72,38,39,29,31]} 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nc6 5. Be2 Nf6 6. O-O O-O 7. h3 a6 8. Be3 {B08: Pirc Defence: Classical System} (8. Re1 e5 9. dxe5 dxe5 10. Bg5 Be6 11. Qc1 Qe8 12. Be3 Qe7 13. Ng5 Nd4 14. Nxe6 Nxe2+ 15. Rxe2 Qxe6 {½-½ (42) Kobalia,M (2619)-Fedoseev,V (2707) Satka 2018}) 8... e6 {LiveBook: 6 Games} 9. Qc1 b5 10. a3 {The position is equal.} Bb7 11. Rd1 $146 ({Predecessor:} 11. Bg5 Ne7 12. Qe3 Nd7 13. Rad1 Qe8 14. Rfe1 f6 {½-½ (79) Hamdani,R (2296)-Ahmadinia,E (2430) Jakarta 2011}) 11... Ne7 12. Nd2 Qe8 13. Bd3 Nd7 14. Nb3 f5 15. f3 fxe4 16. fxe4 Rc8 17. a4 c6 (17... b4 $11 {remains equal.} 18. Ne2 Rb8) 18. axb5 cxb5 19. Qd2 (19. Ne2 $14) 19... Nc6 (19... Nf6 $1 $11) 20. Ne2 ({Better is} 20. Rf1 $14) 20... Qe7 (20... Nb6 $1 $11) 21. c3 $14 Nf6 22. Bg5 e5 (22... Qc7 $14) 23. d5 $16 Nd8 24. Na5 Nf7 {[#]} 25. Be3 $1 Nh5 26. Rf1 Nf4 27. Nxf4 exf4 28. Bxf4 Ne5 29. Be2 Rce8 30. Rae1 Qc7 31. Nb3 {[%cal Ba5b3,Bb3d4,Bd4f3][%mdl 32]} Bc8 32. Nd4 Bd7 33. Kh1 Qc8 34. Qe3 Re7 35. Bg3 Rxf1+ 36. Rxf1 Qe8 37. Nf3 Ng4 38. Qb6 ({Worse is} 38. hxg4 Rxe4 39. Qa7 Rxe2 $11) 38... Rxe4 39. Bd3 Ne3 40. Rg1 ({And not} 40. Bxd6 Nxf1 41. Bxe4 Qxe4 $11) 40... Nf5 41. Bf2 ({Much weaker is} 41. Bxd6 $6 Nxd6 42. Qxd6 Re3 $11) 41... Rf4 {[#]} 42. Qxa6 (42. Re1 $1 $18 {[%cal Re1e8] is more deadly.} Qc8 43. Kg1) 42... b4 43. Bxf5 (43. Qb6 $16) 43... Rxf5 $14 44. Qxd6 {Threatens to win with Re1.} bxc3 45. bxc3 {And now Re1 would win.} Bf8 46. Qb6 Qf7 {aiming for ...Rxf3.} 47. Qe3 {Hoping for c4.} Qxd5 {Accuracy: White = 64%, Black = 65%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.19"]
[Round "7"]
[White "Saduakassova, Dinara"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "A85"]
[WhiteElo "2472"]
[BlackElo "2643"]
[Annotator "TA RC"]
[PlyCount "115"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,115,66,60,75,51,55,44,143,75,83,75,67,75,62,62,75,77,79,75,83,69,65,43,64,35,47,37,43,29,32,18,30,30,25,10,10,12,50,58,56,57,57,55,45,24,23,16,57,23,55,44,55,50,42,39,22,12,93,89,150,136,125,129,231,231,219,225,255,274,270,258,270,284,278,254,400,399,488,481,451,469,462,453,854,849,633,589,804,573,759,657,587,587,556,133,135,134,127,17,366,0]} 1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. Qc2 Bb4 5. e3 b6 6. Bd3 Bb7 7. f3 Nh5 {A85: Dutch Defence: 2 c4 Nf6 3 Nc3} (7... Qe7 8. Nge2 Nc6 9. a3 Bxc3+ 10. Qxc3 d5 11. O-O dxc4 12. Bxc4 O-O-O 13. Nf4 Nd5 14. Nxd5 exd5 15. Bd3 {1-0 (33) Inarkiev,E (2668)-Pridorozhni,A (2556) Kaliningrad 2015}) 8. Nge2 Qh4+ 9. g3 {LiveBook: 3 Games} Bxc3+ {White is slightly better.} 10. bxc3 Qe7 11. O-O Nf6 ({Black should play} 11... O-O $14) 12. c5 $146 (12. e4 $142) ({Predecessor:} 12. e4 fxe4 13. fxe4 e5 14. dxe5 Ng4 15. Nd4 {1-0 (40) Benitah,Y (2377)-Hisler,T (2240) Metz 2010}) 12... O-O $16 13. e4 fxe4 14. fxe4 {Threatens to win with e5.} Nc6 15. Ba3 Ng4 16. Qd2 Rxf1+ 17. Rxf1 {Hoping for Qf4.} Rf8 {Threatening ...Rxf1+.} 18. Rf4 Nh6 19. Rxf8+ Qxf8 20. Qf4 {And now Qxf8+ would win.} (20. Nf4 {feels hotter.} e5 21. Nh3 bxc5 22. Bxc5 d6 23. Ba3) 20... Qxf4 21. Nxf4 Nb8 22. Kg2 Ng4 23. h3 Nf6 24. Kf3 Kf7 25. Ke3 g5 26. Ne2 Na6 27. cxb6 axb6 28. e5 Nd5+ 29. Kd2 h6 30. Be4 {Strongly threatening c4.} Bc6 31. c4 Ne7 32. Bxc6 (32. Nc3 {looks sharper.} Bxe4 33. Nxe4 Nf5 34. Kd3 Ne7 35. h4) 32... dxc6 $14 {[%mdl 4096] Endgame KBN-KNN} 33. Kd3 c5 34. dxc5 $1 bxc5 35. Ke4 Nc6 36. Nc3 Na5 (36... Kg6 $11) 37. Na4 $16 Nb4 ({Better is} 37... Nb7) 38. Nxc5 Nxa2 39. Kd3 Nc6 (39... h5 $16 40. Na6 Kg6 41. Nxc7 Kf5) 40. Kc2 $1 $18 Nxe5 41. Kb3 h5 42. Bb2 Nf3 43. Kxa2 Ng1 44. Be5 c6 45. Nb7 Nxh3 (45... Kg6 $142 46. Nd8 Nxh3 47. Nxc6 Nf2) 46. Nd8+ Kg6 47. Nxc6 Nf2 48. Kb3 Kf5 49. Bb8 h4 (49... Nd3 $142 50. Kc3 Nc5) 50. gxh4 gxh4 51. Nd4+ Kf6 52. Nf3 h3 53. Kc3 Ng4 54. Kd4 Kf5 {intending ...e5+.} 55. Bg3 $2 (55. c5 $1 $18 {[%cal Rc5c6] is the precise move to win. Black must now prevent c6.} e5+ 56. Kc4) 55... e5+ $16 {[#]} 56. Kc3 $1 Ne3 {[#]} 57. Bh2 (57. Nd2 $1 $16) 57... e4 $2 {[%mdl 8192]} (57... Ng4 $11) 58. Ng1 $2 {Precision: White = 55%, Black = 52%.} (58. Nd4+ $18 Kf6 59. c5) 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.20"]
[Round "8"]
[White "Korobov, Anton"]
[Black "Kovalev, Vladislav"]
[Result "1/2-1/2"]
[ECO "E94"]
[WhiteElo "2699"]
[BlackElo "2687"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 33,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O exd4 8. Nxd4 Re8 9. f3 c6 10. Kh1 Nh5 11. g4 Nf6 12. Bf4 h5 13. Nf5 {E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves} gxf5 14. gxf5 d5 15. cxd5 cxd5 16. e5 Bxf5 17. exf6 Qxf6 {LiveBook: 3 Games. The position is equal.} 18. Nxd5 Qxb2 {[%mdl 64] [#] Double Attack} 19. Ne7+ {[%mdl 64] Decoy} Rxe7 20. Qd8+ Bf8 {[#]} (20... Kh7 21. Qxe7 {½-½ (43) Kasimdzhanov,R (2709)-Topalov,V (2771) Zug 2013}) 21. Rg1+ $146 Bg4 $1 (21... Bg6 $2 22. Bc4 $18) 22. fxg4 Nd7 $1 23. gxh5+ ({But not} 23. Qxa8 Rxe2 24. Qd8 (24. gxh5+ Kh7 $15) (24. Qxa7 $2 Qb4 $19) 24... Qb4 $17) 23... Kh8 24. Qxa8 Rxe2 25. Rae1 Rxe1 26. Rxe1 {[#] Hoping for Be5+!} Qf2 $1 {[%cal Rf2e1]} 27. Bg3 Qf3+ 28. Kg1 {aiming for Qe8.} Kh7 {( -> ...Bc5+)} 29. Rf1 Bc5+ 30. Bf2 Qg4+ 31. Kh1 Qe4+ 32. Kg1 Qg4+ 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.20"]
[Round "8"]
[White "Maghsoodloo, Parham"]
[Black "Gledura, Benjamin"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2679"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,133,0,0,0,0,-19,-21,-14,-17,-27,-12,-39,-24,-10,-18,-45,0,-17,-15,-14,-16,-25,-25,-21,-26,-22,-18,-22,-10,-25,-17,-19,-21,-28,-28,-28,-22,-36,-22,-85,-58,-72,-52,-59,-62,-81,-70,-87,-81,-91,-91,-87,-62,-60,-60,-56,-63,-62,-66,-90,-90,-81,-57,-75,-55,-128,-128,-122,-79,-84,-76,-80,-66,-63,-62,-66,-61,-63,-42,-62,-42,-42,-42,-42,-42,-42,-8,-8,-8,-8,-8,-8,-8,-8,-8,-22,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-51,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. b3 Nf6 3. Bb2 Bg4 4. e3 e6 5. h3 Bh5 6. c4 Nbd7 7. Be2 c6 8. O-O Bd6 9. cxd5 cxd5 10. Nc3 a6 {LiveBook: 6 Games} 11. d3 $146 {A12: English Opening: 1...c6 with b3 by White} ({Predecessor:} 11. Nd4 Bxe2 12. Qxe2 O-O 13. f4 Qe7 14. Rad1 Rac8 15. Qf3 Bc5 16. Nce2 Ne4 17. d3 Nd6 18. Kh1 Qh4 {0-1 (79) Gelashvili,T (2551)-Gagunashvili,M (2469) Kocaeli 2002}) 11... O-O 12. a3 Rc8 13. Rc1 Qe7 14. b4 Bb8 15. g3 h6 16. Nh4 {[%cal Bf3h4,Bh4f5,Bf5d4,Bd4b3,Bb3c5][%mdl 32]} Bxe2 17. Qxe2 Rc6 18. e4 dxe4 19. Nxe4 Rfc8 20. Nf5 Qd8 21. Rxc6 Rxc6 22. Nd4 Rc7 23. Nb3 Ba7 24. Kg2 Nd5 25. Rc1 Rxc1 26. Bxc1 Ne5 27. Nec5 Bxc5 28. Nxc5 Qc7 29. d4 (29. Bb2 $11 Nd7 30. Qg4) 29... Nd7 30. Bd2 Qc6 {[#] ( -> ...Nf4+)} 31. Kg1 N7f6 32. a4 Ne7 33. b5 axb5 34. axb5 Qd5 35. Qe5 Nf5 36. Qxd5 Nxd5 37. Nxb7 Nxd4 $15 {[%mdl 4096] Endgame KBN-KNN} 38. Kg2 Nxb5 39. g4 Nd4 40. Nc5 Kh7 41. Nd3 g5 42. f3 (42. h4 $15) 42... f6 $17 43. Kf2 Kg6 44. f4 Nb3 45. Be3 Na5 46. Kf3 Nxe3 47. Kxe3 $15 {KN-KN} Nc6 48. Kf3 Kf7 49. Kg3 Nd4 {[#] Threatens to win with ...Ne2+.} 50. fxg5 hxg5 51. h4 gxh4+ 52. Kxh4 e5 53. Nc5 Ne6 54. Ne4 Ke7 55. Kh5 Nf4+ 56. Kh4 Ke6 57. Kg3 Nd5 58. Kf3 Ne7 59. Nc5+ Kf7 60. Ne4 Kg6 61. Nd6 Ng8 62. Ne4 Nh6 63. Kg3 Nxg4 (63... Nf7 $15) 64. Kxg4 $11 {The position is equal.} f5+ 65. Kf3 fxe4+ 66. Kxe4 Kf7 67. Kxe5 {Precision: White = 58%, Black = 65%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.20"]
[Round "8"]
[White "L'Ami, Erwin"]
[Black "Bareev, Evgeny"]
[Result "1-0"]
[ECO "D19"]
[WhiteElo "2643"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,77,19,21,17,66,52,122,134,127,134,139,134,135,126,158,152,155,139,143,143,158,158,156,143,140,107,114,116,118,78,108,93,93,93,99,101,96,79,74,83,77,47,47,52,48,63,79,76,75,78,173,154,150,165,176,118,212,212]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 {[%cal Be2e3,Be3e4,Be4e5][%mdl 32]} e6 7. Bxc4 Bb4 8. O-O O-O 9. Qe2 Nbd7 10. e4 Bg6 11. Bd3 h6 {LiveBook: 138 Games} 12. Bb1 $146 {D19: Slav Defence: 5 a4 Bf5 6 e3: Main line with 9 Qe2} ({Predecessor:} 12. Bf4 a6 13. h3 Re8 14. e5 Nd5 15. Nxd5 cxd5 16. Bxg6 fxg6 17. Qd3 Nf8 18. Rfc1 Rc8 19. Rxc8 Qxc8 20. Rc1 {½-½ (20) Miton,K (2648)-Harikrishna,P (2664) Montreal 2007}) 12... Be7 13. a5 b5 ({Black should play} 13... a6 $14) 14. e5 $16 {White is better.} Nd5 15. Nxd5 cxd5 16. Bxg6 ({Much less strong is} 16. Qxb5 $6 Rb8 $14) 16... fxg6 17. Qxb5 Rb8 18. Qd3 Kf7 19. Ne1 {[%cal Bf3e1,Be1d3,Bd3f4][%mdl 32]} Qc7 20. Qf3+ Kg8 21. Qg4 {[%mdl 64] Double Attack} Kf7 22. Nd3 {Hoping for Nf4.} Qc2 23. Nf4 Qf5 24. Qe2 g5 25. g4 Qh7 26. Nxd5 exd5 27. e6+ {[%mdl 64] Double Attack} Kg8 {...Nf6 is the strong threat.} 28. exd7 Qe4 29. Re1 {Threatens to win with Qd1.} Qxe2 30. Rxe2 Bf6 31. Re6 Rfd8 32. Rd6 Rb5 33. Bd2 Rxb2 34. Be3 $36 {[%mdl 2048] White has strong initiative.} Rb5 {[#]} 35. Rc1 $1 {[%cal Rc1c8] aiming for Rc8.} Be7 (35... Kf7 $16) 36. Rc8 $18 Kf7 {[#]} 37. a6 $1 Ra5 38. Kg2 (38. f4 $18) 38... Rb5 (38... Ra2 $16 39. h3 (39. Rxd5 Rxa6 40. Rf5+ Ke6 $16) 39... Ra1) 39. Bd2 {Accuracy: White = 73%, Black = 62%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.20"]
[Round "8"]
[White "Esipenko, Andrey"]
[Black "Praggnanandhaa R"]
[Result "1-0"]
[ECO "B69"]
[WhiteElo "2584"]
[BlackElo "2539"]
[Annotator "ChessBase"]
[PlyCount "87"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:01]} d6 {[%emt 0:00:04]} 6. Bg5 {[%emt 0:01:48]} e6 {[%emt 0:00:05]} 7. Qd2 {[%emt 0:01:29]} a6 {[%emt 0:00:07]} 8. O-O-O {[%emt 0:02:45]} Be7 {[%emt 0:00:41]} 9. f4 {[%emt 0:04:11]} Bd7 {[%emt 0:00:43]} 10. Nf3 {[%emt 0:04:20]} b5 {[%emt 0:00:12]} 11. Bxf6 {[%emt 0:09:42]} gxf6 {[%emt 0:00:08]} 12. Kb1 {[%emt 0:03:18]} Qb6 {[%emt 0:00:57]} 13. Ne2 {[%emt 0:06:08]} O-O-O {[%emt 0:02:50]} 14. Ned4 {[%emt 0:01:00]} Kb8 {[%emt 0:06:02]} 15. Be2 {[%emt 0:06:56]} Rc8 {[%emt 0:03:55]} 16. Rhf1 {[%emt 0:01:32]} Na5 {[%emt 0:05:55]} 17. g4 {[%emt 0:08:04]} Rhd8 {[%emt 0:19:09]} 18. Bd3 {[%emt 0:07:51]} Nc4 {[%emt 0:04:12]} 19. Bxc4 {[%emt 0:02:09]} Rxc4 {[%emt 0:00:36]} 20. g5 {[%emt 0:07:31]} Bc8 {[%emt 0:06:46]} 21. h4 {[%emt 0:11:11]} Bb7 {[%emt 0:03:08]} 22. Rfe1 {[%emt 0:00:10]} Rdc8 {[%emt 0:11:39]} 23. Qd3 {[%emt 0:04:15]} Qc7 {[%emt 0:07:38]} 24. Rc1 {[%emt 0:03:49]} Qb6 {[%emt 0:02:29]} 25. Rcd1 {[%emt 0:00:47]} Qc7 {[%emt 0:03:01]} 26. Rc1 {[%emt 0:01:30]} Qa5 {[%emt 0:00:44]} 27. Nb3 {[%emt 0:02:33]} Qb6 {[%emt 0:00:35]} 28. f5 {[%emt 0:03:52]} e5 {[%emt 0:03:47]} 29. Nbd2 {[%emt 0:00:21]} R4c5 {[%emt 0:02:19]} 30. Nf1 {[%emt 0:04:35]} d5 {[%emt 0:02:56]} 31. exd5 {[%emt 0:00:08]} Bxd5 {[%emt 0:02:50]} 32. N1d2 {[%emt 0:00:21]} Qc6 {[%emt 0:06:10]} 33. gxf6 {[%emt 0:02:42]} Bxf6 {[%emt 0:00:36]} 34. Ng5 {[%emt 0:00:15]} b4 {[%emt 0:03:25]} 35. Nge4 {[%emt 0:04:06]} Ra5 {[%emt 0:07:39]} 36. c4 {[%emt 0:02:07]} bxc3 {[%emt 0:01:27]} 37. Rxc3 {[%emt 0:02:56]} Bxa2+ {[%emt 0:02:57]} 38. Kc1 {[%emt 0:00:26]} Qb6 {[%emt 0:02:43]} 39. Nxf6 {[%emt 0:00:23]} Rxc3+ {[%emt 0:00:29]} 40. Qxc3 {[%emt 0:00:00]} Ka7 {[%emt 0:00:00]} 41. Nd7 {[%emt 0:02:58]} Qd8 {[%emt 0:01:48]} 42. Nxe5 {[%emt 0:02:02]} Bd5 {[%emt 0:00:40]} 43. Nb3 {[%emt 0:00:07]} Ra4 {[%emt 0:00:48]} 44. Rd1 {[%emt 0:00:23]} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.20"]
[Round "8"]
[White "Keymer, Vincent"]
[Black "Saduakassova, Dinara"]
[Result "1-0"]
[ECO "A18"]
[WhiteElo "2500"]
[BlackElo "2472"]
[Annotator "ChessBase"]
[PlyCount "75"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. c4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. e4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 4. cxd5 {[%emt 0:00:00]} exd5 {[%emt 0:00:00]} 5. e5 {[%emt 0:00:05]} Ne4 {[%emt 0:00:00]} 6. Nf3 {[%emt 0:00:04]} Be7 {[%emt 0:00:00]} 7. d4 {[%emt 0:00:06]} c5 {[%emt 0:00:17]} 8. dxc5 {[%emt 0:00:09]} Nxc3 {[%emt 0:00:08]} 9. bxc3 {[%emt 0:00:04]} O-O {[%emt 0:00:13]} 10. Bd3 {[%emt 0:01:52]} Nd7 {[%emt 0:08:53]} 11. O-O {[%emt 0:00:11]} Nxc5 {[%emt 0:00:13]} 12. Nd4 {[%emt 0:00:05]} Qc7 {[%emt 0:06:43]} 13. Bf4 Be6 {[%emt 0:11:21]} 14. Bc2 {[%emt 0:20:34]} Rac8 {[%emt 0:04:05]} 15. Rc1 {[%emt 0:09:12]} Rfd8 {[%emt 0:08:35]} 16. f3 {[%emt 0:18:15]} Nd7 {[%emt 0:09:29]} 17. Kh1 Ba3 {[%emt 0:09:39]} 18. Rb1 {[%emt 0:11:00]} Be7 {[%emt 0:03:23]} 19. Rc1 {[%emt 0:03:29]} Kh8 {[%emt 0:03:55]} 20. Bg3 {[%emt 0:05:39]} Qxc3 {[%emt 0:01:47]} 21. f4 {[%emt 0:01:21]} g6 {[%emt 0:16:54]} 22. f5 {[%emt 0:09:25]} gxf5 {[%emt 0:00:04]} 23. Rf3 {[%emt 0:00:17]} Qc7 {[%emt 0:05:18]} 24. Bf4 {[%emt 0:02:10]} Qa5 {[%emt 0:06:22]} 25. Rh3 {[%emt 0:02:26]} Nf8 {[%emt 0:02:12]} 26. Qh5 {[%emt 0:02:50]} Rxc2 {[%emt 0:05:08]} 27. Nxc2 {[%emt 0:00:14]} Rc8 {[%emt 0:00:17]} 28. Qd1 {[%emt 0:07:30]} Qxa2 {[%emt 0:01:46]} 29. Nd4 {[%emt 0:00:12]} Rc4 {[%emt 0:01:51]} 30. Rhc3 {[%emt 0:05:17]} b5 {[%emt 0:01:54]} 31. Bh6 {[%emt 0:01:56]} Qa6 {[%emt 0:01:06]} 32. Rxc4 dxc4 {[%emt 0:01:25]} 33. Qf3 {[%emt 0:05:25]} Qb6 {[%emt 0:01:09]} 34. Nc6 {[%emt 0:02:45]} Bc5 {[%emt 0:01:40]} 35. Qg3 {[%emt 0:00:29]} Ng6 {[%emt 0:00:02]} 36. Qg5 {[%emt 0:00:49]} Bf8 {[%emt 0:00:05]} 37. Bxf8 {[%emt 0:00:15]} Kg8 {[%emt 0:00:10]} 38. Bh6 {[%emt 0:00:10]} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.20"]
[Round "8"]
[White "Paehtz, Elisabeth"]
[Black "Van Foreest, Lucas"]
[Result "0-1"]
[ECO "E06"]
[WhiteElo "2477"]
[BlackElo "2502"]
[Annotator "ChessBase"]
[PlyCount "150"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:00]} d5 {[%emt 0:00:02]} 4. Bg2 {[%emt 0:00:00]} Be7 {[%emt 0:00:07]} 5. Nf3 {[%emt 0:00:00]} O-O {[%emt 0:00:05]} 6. O-O {[%emt 0:00:00]} dxc4 {[%emt 0:00:05]} 7. Qc2 {[%emt 0:00:00]} a6 {[%emt 0:00:20]} 8. a4 {[%emt 0:00:00]} Bd7 {[%emt 0:00:05]} 9. Qxc4 {[%emt 0:00:05]} Bc6 {[%emt 0:00:20]} 10. Bg5 {[%emt 0:00:05]} Bd5 {[%emt 0:00:06]} 11. Qc2 {[%emt 0:00:03]} Be4 {[%emt 0:01:22]} 12. Qc1 {[%emt 0:00:03]} h6 {[%emt 0:05:03]} 13. Bxf6 {[%emt 0:00:06]} Bxf6 {[%emt 0:00:05]} 14. Nc3 {[%emt 0:00:14]} Bxf3 {[%emt 0:04:04]} 15. Bxf3 {[%emt 0:00:54]} c6 {[%emt 0:06:21]} 16. Rd1 {[%emt 0:02:33]} a5 {[%emt 0:00:55]} 17. e3 {[%emt 0:01:02]} Na6 {[%emt 0:00:10]} 18. h4 {[%emt 0:00:09]} Nb4 {[%emt 0:03:32]} 19. h5 {[%emt 0:00:06]} Qe7 {[%emt 0:10:58]} 20. Qb1 {[%emt 0:16:06]} Rfd8 {[%emt 0:12:13]} 21. Qe4 {[%emt 0:04:18]} Rd7 {[%emt 0:07:46]} 22. Qg4 {[%emt 0:07:00]} Rad8 {[%emt 0:14:04]} 23. Kg2 {[%emt 0:05:22]} e5 {[%emt 0:07:33]} 24. dxe5 {[%emt 0:00:25]} Bxe5 {[%emt 0:00:06]} 25. Rxd7 {[%emt 0:05:56]} Rxd7 {[%emt 0:02:59]} 26. Rd1 {[%emt 0:01:01]} Rxd1 {[%emt 0:02:55]} 27. Nxd1 {[%emt 0:06:04]} Qd8 {[%emt 0:06:38]} 28. Qf5 {[%emt 0:03:22]} Bf6 {[%emt 0:00:31]} 29. Nc3 {[%emt 0:08:19]} Nd3 {[%emt 0:03:48]} 30. Nd1 {[%emt 0:21:14]} Ne1+ {[%emt 0:02:33]} 31. Kf1 {[%emt 0:00:16]} Nxf3 {[%emt 0:00:04]} 32. Qxf3 {[%emt 0:00:04]} Qd3+ {[%emt 0:00:11]} 33. Kg2 {[%emt 0:04:18]} b5 {[%emt 0:09:52]} 34. Qxc6 {[%emt 0:13:46]} Qxd1 {[%emt 0:00:18]} 35. Qe8+ {[%emt 0:00:35]} Kh7 {[%emt 0:00:05]} 36. Qe4+ {[%emt 0:00:38]} g6 {[%emt 0:03:58]} 37. hxg6+ {[%emt 0:00:03]} fxg6 {[%emt 0:01:18]} 38. Qb7+ {[%emt 0:03:41]} Bg7 {[%emt 0:00:06]} 39. axb5 {[%emt 0:02:35]} Qb3 {[%emt 0:00:24]} 40. b6 {[%emt 0:00:00]} Qxb2 {[%emt 0:00:00]} 41. Qa7 {[%emt 0:04:52]} a4 {[%emt 0:00:57]} 42. b7 {[%emt 0:00:05]} a3 {[%emt 0:00:07]} 43. b8=Q {[%emt 0:01:16]} Qxb8 {[%emt 0:00:07]} 44. Qxb8 {[%emt 0:00:15]} a2 {[%emt 0:00:02]} 45. g4 {[%emt 0:04:18]} a1=Q {[%emt 0:00:45]} 46. Qb7 {[%emt 0:00:27]} Qd1 {[%emt 0:06:26]} 47. Qe4 {[%emt 0:00:36]} Qd7 {[%emt 0:02:43]} 48. Kg1 {[%emt 0:00:56]} h5 {[%emt 0:03:16]} 49. gxh5 {[%emt 0:00:13]} Qd1+ {[%emt 0:00:10]} 50. Kg2 {[%emt 0:00:11]} Qxh5 {[%emt 0:00:08]} 51. Kg1 {[%emt 0:06:45]} Be5 {[%emt 0:02:07]} 52. Kg2 {[%emt 0:03:02]} Kh6 {[%emt 0:00:53]} 53. Kf1 {[%emt 0:01:33]} Bf6 {[%emt 0:01:00]} 54. Qf4+ {[%emt 0:00:27]} Qg5 {[%emt 0:00:09]} 55. Qh2+ {[%emt 0:00:29]} Qh4 {[%emt 0:00:13]} 56. Qd6 {[%emt 0:01:40]} Qc4+ {[%emt 0:01:20]} 57. Kg1 {[%emt 0:00:28]} Qg4+ {[%emt 0:03:10]} 58. Kf1 {[%emt 0:00:09]} Qf3 {[%emt 0:00:52]} 59. Qh2+ {[%emt 0:02:56]} Kg5 {[%emt 0:00:28]} 60. Qh7 {[%emt 0:00:00]} Qd1+ {[%emt 0:00:00]} 61. Kg2 {[%emt 0:01:00]} Qg4+ {[%emt 0:03:35]} 62. Kf1 {[%emt 0:00:06]} Qc4+ {[%emt 0:00:04]} 63. Kg1 {[%emt 0:00:53]} Qe4 {[%emt 0:00:32]} 64. Kf1 {[%emt 0:02:06]} Qc4+ {[%emt 0:13:23]} 65. Kg1 {[%emt 0:00:19]} Qg4+ {[%emt 0:00:03]} 66. Kf1 {[%emt 0:00:10]} Qe4 {[%emt 0:00:03]} 67. Kg1 {[%emt 0:01:46]} Be7 {[%emt 0:03:26]} 68. Qf7 {[%emt 0:08:58]} Kh4 {[%emt 0:01:50]} 69. Qh7+ {[%emt 0:03:56]} Kg4 {[%emt 0:01:17]} 70. Kf1 {[%emt 0:03:19]} Bh4 {[%emt 0:02:47]} 71. Qd7+ {[%emt 0:00:13]} Qf5 {[%emt 0:00:13]} 72. Qd4+ {[%emt 0:02:32]} Kh3 {[%emt 0:01:27]} 73. e4 {[%emt 0:00:11]} Qb5+ {[%emt 0:01:52]} 74. Ke1 {[%emt 0:00:05]} Kg2 {[%emt 0:00:08]} 75. e5 {[%emt 0:00:19]} Qf1+ {[%emt 0:00:10]} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.20"]
[Round "8"]
[White "Kuipers, Stefan"]
[Black "Chigaev, Maksim"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2470"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,90,12,0,11,-40,-20,-29,-29,-24,-25,-48,-56,-76,-64,-81,-89,-73,-73,-79,-72,-141,-136,-108,-102,-216,-148,-176,-162,-166,-137,-141,-139,-170,-179,-162,-179,-186,-184,-275,-282,-283,-275,-260,-260,-349,-337,-350,-333,-320,-277,-396,-399,-443,-454,-496,-470,-457,-457,-410,-401,-761,-786,-741,-781,-1014,-937,-4622,-4618,-29982,-29981,-29991,-29992]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a6 6. O-O d6 7. Bg5 {[%cal Bc1g5,Bg5h4,Bh4g3][%mdl 32] C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} h6 {[%cal Bh7h6,Bh6h5][%mdl 32]} 8. Bh4 Ba7 9. Nbd2 Qe7 10. b4 g5 11. Bg3 {LiveBook: 4 Games} Nh7 $146 ({Predecessor:} 11... Bg4 12. h3 Bh5 13. Re1 Bg6 14. a4 Nh5 {1-0 (117) Demchenko,A (2596)-Jakovenko,D (2745) Khanty-Mansiysk 2014}) 12. d4 (12. a4 $11) 12... h5 $1 $15 {[%cal Rh5h4] aiming for ...h4.} 13. h4 g4 $1 {[%cal Rg4f3]} 14. Ne1 $1 exd4 15. cxd4 Bxd4 16. Nd3 Bxa1 17. Qxa1 O-O $1 18. Nf4 {[#]} Qf6 $1 19. Qc1 Be6 20. Bd5 (20. Nxh5 $142 Qh6 21. Nf4) 20... Bxd5 $17 21. Nxd5 Qg7 22. Ne3 (22. a4 $17 {keeps fighting.}) 22... Nd4 {Hoping for ...Ne2+.} 23. Qc4 b5 24. Qd3 Rad8 25. Nb3 {[#]} c5 $1 {[%cal Bc7c5,Bc5d4][%mdl 32]} 26. Nxd4 (26. bxc5 dxc5) 26... Qxd4 ({Stronger than} 26... cxd4 27. Nf5 $14) 27. Qxd4 cxd4 28. Nf5 Rfe8 29. f3 (29. Nxd6 $142 Re6 30. Nb7) 29... gxf3 $19 30. gxf3 d5 31. e5 f6 32. f4 fxe5 33. fxe5 Nf8 34. Nh6+ Kg7 35. Nf5+ (35. Nf7 $142 Rd7 36. Nd6) 35... Kh7 36. Nd6 Re7 37. Nf7 Rdd7 38. Ng5+ Kg8 39. Rf6 {and the idea e6 leaves White hopeful.} Nh7 40. Rxa6 (40. Nxh7 $142 Kxh7 41. Rf5) 40... Nxg5 41. hxg5 {KRR-KRB} Ra7 42. Rd6 Rxa2 43. e6 d3 44. Rd8+ Kh7 45. Rd7 Rxd7 {Accuracy: White = 29%, Black = 81%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.22"]
[Round "9"]
[White "Kovalev, Vladislav"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2687"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,80,8,5,0,0,0,0,-7,0,0,0,0,0,0,0,0,7,0,8,5,15,11,1,1,27,19,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bd3 Bd6 6. Qe2+ Be6 {C01: French: Exchange Variation} 7. Ng5 (7. c4 dxc4 8. Bxc4 Qe7 9. O-O O-O 10. Nc3 Re8 11. Bg5 h6 12. Bh4 Nbd7 13. Rfe1 Qf8 14. Bxe6 Rxe6 {0-1 (58) Carlsen,M (2832)-Grischuk,A (2750) chess.com INT 2017}) 7... Qe7 8. Nxe6 fxe6 {LiveBook: 6 Games} 9. Nd2 Nc6 10. Nf3 O-O 11. O-O e5 12. dxe5 Nxe5 13. Nxe5 {[#]} Qxe5 $146 ({Predecessor:} 13... Bxe5 14. Bf4 {0-1 (54) Kurmann,O (2451)-Bogner,S (2605) Lenzerheide 2018}) 14. Qxe5 Bxe5 15. c3 {[%cal Bc2c3,Bc3c4][%mdl 32]} c6 16. Bd2 Ng4 17. g3 Bc7 18. Be2 Nf6 19. c4 Bb6 20. cxd5 Rae8 {The position is equal.} 21. Rae1 {[#] Threatens to win with dxc6.} Ne4 22. Be3 Bxe3 23. fxe3 {Black must now prevent dxc6.} cxd5 24. Rc1 Nf6 25. Rc3 Re5 26. Bf3 g5 {[%cal Bg7g5,Bg5g4][%mdl 32]} 27. Rd1 g4 28. Bg2 Kg7 29. Rd4 Rf7 30. Ra4 b6 31. Rf4 Rfe7 32. Kf2 Rh5 33. Kg1 Rhe5 34. Kf2 Rh5 35. Rc6 Rf7 36. Kg1 Re5 37. Kf2 Rh5 38. Kg1 Re5 39. Rc3 Rfe7 40. Kf2 Rh5 {Precision: White = 79%, Black = 80%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.22"]
[Round "9"]
[White "Bareev, Evgeny"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2650"]
[BlackElo "2500"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,102,-13,-8,-10,-7,-10,-15,-15,-13,-13,-10,-27,0,0,0,0,0,0,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-127,-130,-140,-141,-231,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Nf6 3. c3 e6 4. Bf4 Bd6 5. Bg3 O-O 6. Nbd2 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} c5 7. e3 Qc7 8. Ne5 (8. Bd3 Nbd7 9. O-O e5 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. Qc2 Bxg3 13. hxg3 b6 14. e4 Bb7 15. exd5 Bxd5 16. Rfe1 Rfe8 17. Ne4 Bxe4 18. Bxe4 Nxe4 19. Rxe4 Qc6 20. Rae1 {½-½ (20) Korobov,A (2685)-Romanov,E (2611) Biograd 2018}) 8... b6 9. Bd3 Ba6 10. Bxa6 Nxa6 {LiveBook: 6 Games} 11. Qe2 Nb8 12. Rd1 $146 ({Predecessor:} 12. O-O Nc6 {½-½ (37) Paehtz,E (2513)-Jackson,J (2371) Douglas 2018}) 12... Nc6 {[%cal Rc6e5]} 13. Nxc6 Qxc6 14. Bxd6 Qxd6 15. e4 {Threatens to win with e5.} dxe4 16. Nxe4 Nxe4 17. Qxe4 Rad8 18. O-O Rd7 19. g3 Rfd8 20. Qe2 h6 21. dxc5 Qxd1 22. Rxd1 Rxd1+ $11 {[%mdl 4096] Endgame KQ-KRR} 23. Kg2 bxc5 24. Qb5 R1d5 25. h4 g5 26. hxg5 hxg5 27. a4 Kg7 28. a5 Re5 29. b4 Rd2 30. g4 a6 31. Qc4 cxb4 {[%mdl 64] Discovered Attack} 32. cxb4 Ree2 33. Qc5 Kg6 ({Don't blunder} 33... Rxf2+ $2 34. Qxf2 Rd6 35. b5 $1 $18 {[%mdl 512]}) 34. Qb6 (34. Kf3 $11 {keeps the balance.}) 34... Re4 $17 (34... Rxf2+ $2 35. Qxf2 Rd6 36. Qb6 $3 $18 {[%mdl 512]}) 35. Kg3 {[#]} Rd3+ $1 36. f3 (36. Kg2 $17 {was called for.}) 36... Rf4 $2 (36... Ree3 $19 37. Qc6 Re2) 37. Qb7 $1 $11 {The position is equal.} Rb3 ({Don't go for} 37... Rfxf3+ $2 38. Qxf3 Rd4 39. Qb7 $18) 38. b5 axb5 39. a6 {aiming for a7.} Ra3 40. a7 Rfa4 41. Qb8 Rxa7 {Hoping for ...Ra8.} 42. Qg8+ Kf6 {White must now prevent ...Rd3.} 43. Qd8+ Ke5 44. Qxg5+ Kd6 45. Qxb5 R3a5 46. Qb4+ Kc6 47. Qe4+ Rd5 48. g5 Ra1 49. Qc4+ Kd7 50. Qf4 {[#]} Rxg5+ $1 {[%mdl 512]} 51. Kh4 (51. Qxg5 Rg1+) 51... Rag1 {Accuracy: White = 82%, Black = 75%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.22"]
[Round "9"]
[White "Gledura, Benjamin"]
[Black "Paehtz, Elisabeth"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2615"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,59,13,3,13,-12,-14,-27,-25,-20,22,0,14,9,22,10,10,0,34,39,37,17,11,20,0,0,35,26,93,87,393,437,409,402,406,384,386,364,654,651,650,633,754,715,672,368]} 1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. e3 a6 5. d4 Bf5 6. Nh4 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} Bg4 7. Qc2 e6 8. h3 Bh5 9. g4 {LiveBook: 3 Games} Nfd7 10. gxh5 $146 {And now Nf3 would win.} ({Predecessor:} 10. Ng2 Bg6 11. Qb3 b5 12. c5 a5 13. Nf4 b4 14. Nxg6 hxg6 {½-½ (60) Shankland,S (2581)-Gareyev,T (2654) Las Vegas 2012}) 10... Qxh4 11. Bd2 dxc4 12. Bxc4 Qxh5 13. Be2 Qh4 14. O-O-O Nb6 15. Rhg1 N8d7 16. Ne4 Qe7 17. Kb1 g6 18. h4 Qxh4 19. Ng5 Qh2 20. e4 Qd6 ({Don't play} 20... Qxf2 $6 21. Bc1 $16) 21. Bc3 {[%cal Bd2c3,Bc3g7,Bg7d4][%mdl 32] Strongly threatening d5.} Rc8 {[#]} (21... Bg7 $11) 22. Qb3 $1 $16 {d5 is the strong threat.} Bg7 $2 {[%mdl 8192] [#]} (22... Be7 $16) 23. d5 $1 $18 {[%cal Rd5e6]} cxd5 {Threatens to win with ...Bxc3.} 24. Bxg7 Rg8 25. Bd4 h6 {[#]} 26. e5 $1 {[%mdl 512]} Qc7 $2 (26... Nxe5 27. Nxe6 (27. Qxb6 Qxb6 28. Bxb6 hxg5 $16) (27. Bxb6 hxg5 28. Rxg5 f6 $16) 27... fxe6) 27. Rc1 {White is clearly winning.} Nc4 {[#] ( -> ...Nd2+)} 28. Ne4 $1 {[%mdl 512]} Ndxe5 (28... dxe4 29. Bxc4) 29. Nf6+ Kf8 30. Qb4+ {Precision: White = 66%, Black = 50%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.22"]
[Round "9"]
[White "Chigaev, Maksim"]
[Black "Esipenko, Andrey"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2604"]
[BlackElo "2584"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,73,6,24,6,9,17,25,25,27,25,17,21,17,26,26,23,91,74,72,75,85,82,90,18,23,17,67,17,15,19,22,11,51,50,50,50,50,50,50,52,55,55,54,54,53,58,57,41,51,47,38,28,34,22,61,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a6 7. a4 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Ba7 8. Re1 h6 9. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3,Be3f5][%mdl 32]} O-O 10. h3 Re8 {LiveBook: 58 Games} 11. Qb3 Qe7 12. a5 Nd8 $146 ({Predecessor:} 12... Rb8 13. Nf1 Be6 14. Be3 Bxc4 15. Qxc4 Qd7 {1-0 (81) Fedoseev,V (2703)-Negi,P (2670) Khanty-Mansiysk 2017}) 13. Nf1 Be6 14. Be3 Bxc4 15. Qxc4 Bxe3 16. Nxe3 Ne6 17. d4 Ng5 (17... exd4 $11 {keeps the balance.} 18. cxd4 Nh5) 18. Nxg5 $16 hxg5 19. dxe5 dxe5 20. Nf5 Qd7 21. Qe2 (21. Red1 $16 Qe6 22. Qxe6 (22. Qxc7 Nxe4 23. Ne3 Rab8 $14) 22... fxe6 23. Ne3) 21... Rad8 $11 22. Rad1 Qe6 23. Qe3 Rxd1 24. Rxd1 g6 25. Ng3 Nh7 26. Qc5 Qe7 27. Qxe7 Rxe7 $14 {[%mdl 4096] Endgame KRN-KRN} 28. Rd8+ Kg7 29. Nf1 Nf8 30. Rb8 c6 $1 31. Ne3 f6 32. Nc4 Rd7 $1 33. g3 Ne6 34. f3 Nc5 35. b4 Ne6 36. Nb6 Rc7 37. Rc8 {Precision: White = 71%, Black = 55%.} (37. Kf2 $14) 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.22"]
[Round "9"]
[White "Praggnanandhaa R"]
[Black "Korobov, Anton"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2539"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,103,32,19,28,15,33,27,23,0,12,12,22,0,-7,-7,54,68,62,31,41,35,41,32,39,39,38,41,31,35,35,31,35,35,37,35,38,26,25,28,34,25,70,62,77,66,70,75,68,0,75,45,62,54,54,58,62,45,50,54,71,33,62,8,6,0,0,0,0,0,0,0,0,-79,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a5 6. O-O {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} d6 7. Nbd2 O-O 8. h3 Ba7 (8... h6 9. Re1 Be6 10. Bb5 Qb8 11. Nf1 Qa7 12. Be3 Bxe3 13. Nxe3 Ne7 14. Ba4 Ng6 15. Bc2 {½-½ (27) Dominguez Perez,L (2739)-Nakamura,H (2777) Saint Louis 2018}) 9. Re1 Ne7 10. Bb3 {LiveBook: 3 Games} Ng6 11. Nf1 Nh5 12. Bg5 Qe8 13. Nxe5 (13. d4 {is interesting.} Be6 14. Be3 Ngf4 15. Kh1 Bxb3 16. axb3 Bb6 17. Qc2) 13... Nxe5 14. d4 $1 Nf6 $146 15. Bxf6 gxf6 16. dxe5 Qxe5 ({Better is} 16... fxe5 $11 17. Qh5 Qe7) 17. Qf3 $14 Be6 18. Ne3 {[%cal Bf1e3,Be3g4,Bg4f6][%mdl 32]} a4 19. Bd5 Kh8 20. Rad1 Rg8 21. Bxe6 fxe6 22. Ng4 Qg5 23. Qxf6+ ({Don't blunder} 23. Nxf6 $2 Raf8 $19) 23... Qxf6 24. Nxf6 Raf8 25. e5 Bxf2+ $1 26. Kxf2 {[#] Black must now prevent Kg1.} dxe5 27. g4 Rxf6+ $11 {[%mdl 4096] Endgame KRR-KRR} 28. Kg3 Rgf8 29. Rxe5 R8f7 30. Rd8+ Kg7 31. Rg5+ Rg6 $1 {[%cal Rg6g5]} 32. Ra5 Rgf6 33. Rg5+ Rg6 $1 {[%cal Rg6g5]} 34. Kh4 (34. Rb5 {with more complications.} Rgf6 35. Rxb7 Rf3+ 36. Kh4 a3 37. c4) 34... Rxg5 35. Kxg5 $14 {KR-KR} h6+ 36. Kh5 Re7 37. Rd4 e5 38. Re4 b5 39. h4 c6 40. b3 (40. a3 $14) 40... a3 $1 $11 41. c4 Re8 42. g5 hxg5 43. hxg5 Rh8+ 44. Kg4 Rh2 45. Rxe5 {[#]} (45. cxb5 $1 $11 cxb5 46. Rxe5) 45... Rxa2 (45... b4 $1 $17 46. Re7+ Kf8) 46. cxb5 {The position is equal.} cxb5 47. Rxb5 Rg2+ 48. Kf5 Rf2+ 49. Ke4 a2 50. Ra5 Rb2 51. Kf5 Rf2+ 52. Ke4 {Precision: White = 45%, Black = 66%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.22"]
[Round "9"]
[White "Van Foreest, Lucas"]
[Black "Kuipers, Stefan"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2502"]
[BlackElo "2470"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,126,16,27,20,21,16,21,25,39,4,37,-28,-19,-69,-75,-44,-18,-25,0,0,0,-94,-12,-14,-11,-22,0,-16,0,0,0,0,0,-66,-91,-113,-112,-256,-72,-190,-185,-149,-63,-60,14,24,14,16,18,-32,-32,-33,-24,-111,-133,-187,-181,-181,-164,-175,-174,-171,-170,-154,-145,-251,-243,-312,-303,-562,-562,-541,-537,-622,-625,-827,-814,-601,-952,-873,-634,-1252,-1164,-2300,-2167,-5427,-4276,-5531,-5726,-5601,-5804,-5806,-5726,-4088,-3454,-6015,-5750,-29971,-29967,-29979,-29980,-29986,-29987,-29987,-29988,-29991,-29992,-29992,-29993]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Ne2 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4} Qb6 9. Qc1 Be7 10. c3 O-O {LiveBook: 3 Games} 11. g3 a5 (11... Qc7 12. h4 b5 13. Qc2 f5 14. Ng5 Nb6 15. dxc5 Nc4 {1-0 (39) Aronian,L (2765)-Jumabayev,R (2602) St Petersburg 2018}) 12. Bh3 a4 $146 ({Predecessor:} 12... cxd4 13. Nexd4 Nc5 14. O-O Bd7 15. Nxc6 bxc6 {½-½ (28) Potrata,J (2264)-Conde Poderoso,A (2345) ICCF email 2016}) 13. O-O Qa6 14. Qd1 cxd4 15. cxd4 (15. Nexd4 $14 Nc5 16. Qc2) 15... Nb6 $11 16. g4 Nc4 17. Bc1 Qb6 18. Rb1 $1 Na3 19. Ra1 Nc4 20. Kh1 (20. Rb1 $1 $11) 20... f6 (20... Nxb2 $17 21. Rb1 a3) 21. exf6 Bxf6 22. g5 Be7 $36 {[%mdl 2048] Black has good play.} 23. g6 h6 24. Ng5 Rf6 (24... hxg5 25. Ng3 $14) 25. Nh7 Rf5 {next ...Rh5 is good for Black.} 26. Bxf5 (26. Ng3 $1 $11) 26... exf5 $15 27. Rg1 Bd7 {[%mdl 1024] Black has strong compensation.} 28. Rg3 (28. Rg2 $17) 28... Nd8 $2 (28... Bh4 $19 29. Rh3 Bd8) 29. Ng1 {[#]} (29. Nc3 $17) 29... Qe6 $1 $19 30. Nf3 Be8 ({Black should try} 30... Qe4 $17 31. Kg1 Ne6) 31. Ne5 $15 Nxe5 (31... Nc6 $15) 32. fxe5 $11 {Qh5 is the strong threat.} f4 33. Bxf4 {Strongly threatening Qh5.} Qf5 34. Qg4 (34. Bxh6 $5 a3 35. b4 gxh6 36. Qf1 Qxf1+ 37. Rxf1 $16) 34... Qe4+ 35. Rg2 {And now Rf1 would win.} Ra6 {[%cal Ra6g6]} 36. Nf6+ (36. Bxh6 $1 $11 Qxg4 37. Rxg4 gxh6 38. Rf1 Rxg6 39. Nf6+ Kh8 40. Rg2) 36... gxf6 $17 37. Bxh6 (37. exf6 $17 Rxf6 38. Bxh6) 37... Qxg4 $19 38. Rxg4 f5 39. Rg3 Bxg6 40. Rag1 Kf7 41. Bf4 Rc6 42. h3 (42. R1g2 $17) 42... Bf8 43. Bg5 Ne6 44. Bh6 $2 (44. Be7) 44... Bxh6 45. Rxg6 {Hoping for Rf6+.} Nxd4 46. Rd6 Be3 47. Re1 Rxd6 48. exd6 {[#]} f4 $1 {[%cal Bf5f4,Bf4f3,Bf3f2][%mdl 32]} 49. h4 Nf5 50. d7 Ke7 51. Rd1 d4 52. h5 f3 53. Kh2 Kxd7 54. Kh3 Ke6 55. Kg4 f2 56. Kf3 Kf6 57. Rh1 Kg5 58. b3 a3 {Black mates.} 59. b4 b5 60. Kg2 Kg4 61. h6 Nxh6 62. Rh2 d3 63. Rh1 Nf5 {Accuracy: White = 37%, Black = 60%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.22"]
[Round "9"]
[White "Saduakassova, Dinara"]
[Black "Maghsoodloo, Parham"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "2472"]
[BlackElo "2679"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,88,35,37,27,27,13,7,-4,21,23,39,24,49,20,59,53,86,22,35,31,64,20,96,90,104,94,91,82,107,106,95,104,106,115,112,97,100,93,94,79,177,104,139,132,132,132,130,130,180,181,189,103,98,68,154,0,0,0,0,-131,-135,-436,-422,-29992,-29992,-29992,-6291,-29993,-29994,-29996,-29994,-29996,-29995,-29995,-29996]} 1. Nf3 c5 2. c4 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. e3 Nxc3 6. bxc3 g6 7. h4 {[%cal Bh2h4,Bh4h5][%mdl 32] A34: Symmetrical English: 2 Nc3, lines with ...d5} h6 (7... Bg7 8. h5 Nc6 9. Be2 b6 10. Kf1 Qd6 11. d4 O-O 12. Ba3 Bf5 13. Kg1 Rfd8 14. Qa4 Qf6 15. hxg6 hxg6 {0-1 (63) Aronian,L (2799)-Nepomniachtchi,I (2751) Saint Louis 2017}) 8. d4 Bg7 {LiveBook: 4 Games} 9. Be2 {White is slightly better.} O-O $146 ({Predecessor:} 9... Nd7 10. O-O O-O 11. Ba3 b6 12. Rb1 e5 13. dxc5 Nxc5 14. Bxc5 bxc5 {1-0 (74) Halkias,S (2544)-Tate,A (2347) Tromsoe 2014}) 10. h5 {Hoping for hxg6.} g5 $1 11. O-O Nc6 12. Rb1 Qc7 13. Ba3 b6 14. Qc2 $36 {[%mdl 2048] White is more active.} Rd8 15. dxc5 e5 16. e4 (16. Nd2 $16) 16... Be6 $11 17. Rfd1 Bf8 18. Rxd8 Rxd8 (18... Nxd8 $11 19. Qc1 bxc5) 19. cxb6 $16 axb6 20. Bxf8 Rxf8 21. Qb2 Rb8 22. Nd2 {[%cal Bf3d2,Bd2f1,Bf1g3][%mdl 32]} Na5 23. Nf1 Nc4 24. Qb4 Rc8 25. a4 Kg7 26. Ng3 Kf6 27. Rd1 Na5 (27... Qe7 $16) 28. Ba6 (28. Nf5 $1 $18) 28... Rd8 29. Rxd8 Qxd8 30. Nf1 Nc6 31. Qb1 g4 32. Ne3 Kg5 33. Bb5 ({White should play} 33. Bc4 $18) 33... Na5 34. Nf5 {Threatening mate with Qc1+.} Qd2 {[#]} (34... Kxh5 $14 35. Be2 Bxf5 36. exf5 Qd2) 35. Ng7 $2 (35. Qb4 $1 $16 {[%cal Rb4e7] Threatens to win with Qe7+.} Qd1+ 36. Bf1) 35... Bb3 $11 36. Qa1 Nb7 37. Bc6 {[#]} (37. a5 $11 Nxa5 38. Qa3 Qe1+ 39. Bf1) 37... Nc5 $1 $17 38. a5 $2 {[%mdl 8192]} (38. c4 $17 {is a better chance.} f6 39. Qf1) 38... Nd3 $19 39. axb6 (39. Qf1 $19 bxa5 40. Bb5) 39... Qxf2+ 40. Kh1 Qh4+ 41. Kg1 g3 {Black mates.} 42. b7 Qh2+ 43. Kf1 Qh1+ 44. Ke2 Nf4+ {Precision: White = 52%, Black = 57%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.23"]
[Round "10"]
[White "Korobov, Anton"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2699"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,135,-6,7,-12,-8,0,-9,-37,-17,-25,-21,-12,0,-15,0,-13,-8,-38,-38,-45,-38,-38,-38,-38,-38,-38,-38,-38,-38,-38,-38,-38,-38,-57,-57,-104,0,0,0,-11,0,-43,-43,-43,-43,-43,-43,-43,67,-50,-29,-50,-31,-22,0,-45,-8,-42,0,-485,-495,-485,-480,-620,-239,-232,-236,-209,-42,-478,-222,-224,-179,-203,0,0,0,0,0,0,0,-60,0,0,0,0,0,0,0,0,0,0,0,-54,-51,-52,-56,-29977,-29977,-29970,-29968,-29991,-4998,-2016,-1131,-966,0,0,-4,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Bf4 Nf6 3. Nd2 e6 4. e3 Bd6 5. Bg3 O-O 6. Bd3 b6 7. Ngf3 Ba6 {LiveBook: 10 Games. D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} 8. c4 c5 9. dxc5 bxc5 $146 ({Predecessor:} 9... Bxc5 10. a3 Bd6 11. Rc1 dxc4 12. Nxc4 Bxc4 13. Bxd6 Bxd3 14. Bxf8 Qxf8 15. Qxd3 {1-0 (15) Karlik,V (2348)-Mueller,M (2124) Stare Mesto 2004}) 10. a3 h6 11. O-O Bxg3 12. hxg3 Nbd7 13. Qc2 Qe7 14. Rfe1 e5 15. e4 ({Reject} 15. cxd5 Bxd3 16. Qxd3 e4 $17) (15. Bf1 {is more complex.} e4 16. Nh2 Bb7 17. cxd5 Bxd5 18. Bc4) 15... d4 16. b4 Bb7 17. b5 a5 18. a4 g6 19. Nb3 Kg7 20. Qd2 Qd8 21. Nh4 Re8 22. Re2 Qc7 23. f3 Nh5 24. Kf2 {[#]} Ndf6 ({Better is} 24... f5 $1 $17 {[%mdl 512]}) 25. Rh1 $11 Rh8 26. Ree1 Bc8 27. g4 Nf4 28. Bf1 Ne6 29. g3 Ng5 30. Bd3 Nd7 (30... Bb7 $15) 31. Nc1 (31. f4 $14 exf4 32. gxf4) 31... Nb6 {[%cal Bd7b6,Bb6a4,Ba4c3][%mdl 32]} 32. f4 Ne6 {[%cal Re5f4]} 33. Ne2 Nxa4 34. f5 $1 {[%cal Rf5e6]} Ng5 35. Nf4 $1 Nc3 (35... Bb7 {looks sharper.} 36. Nd5 Bxd5 37. exd5 Nc3 38. fxg6 fxg6 39. Bxg6 Raf8+) 36. Nfxg6 $2 {[%mdl 8192]} (36. Nd5 $11 Qd6 37. Bc2 Nxd5 38. exd5) 36... fxg6 $19 37. Nxg6 Bb7 38. Rxh6 Rxh6 $2 ({Not} 38... Kxh6 39. Rh1+ Kg7 40. Qxg5 $11) (38... Ngxe4+ 39. Rxe4 Rxh6 40. f6+ Kh7 41. Rxe5 Be4) 39. Qxg5 Kh7 {Strongly threatening ...Qg7.} 40. Qf6 Qg7 41. Qd6 $2 {[%mdl 8192]} (41. Qe6 $1 $15) 41... Rg8 (41... Re8 $142 42. Kg2 Kg8) 42. Kg2 {Threatens to win with g5.} Qf7 43. Qxc5 Rgxg6 $2 (43... Re8 $1 $19 {...Kg8 is the strong threat.} 44. Nxe5 Qg7) 44. fxg6+ $11 Qxg6 {And now ...Qg7 would win.} 45. Qxe5 {Hoping for g5.} Qxg4 46. c5 Qh3+ 47. Kf2 (47. Kf3 $1 $11 Rg6 48. c6) 47... Rg6 ({Much weaker is} 47... Qh2+ $6 48. Kf3 $11) (47... Re6 $1 $15 48. Qf5+ Qxf5+ 49. exf5 Rxe1 50. Kxe1 Bd5) 48. c6 Bc8 49. Qe7+ Kg8 50. Bc4+ Be6 51. Bxe6+ Rxe6 52. Qd8+ Kh7 53. e5 ({White should play} 53. Qd7+ $1 $11 Kg6 54. e5) 53... Qh2+ $15 54. Kf3 Rg6 {[%csl Gg6][%cal Rh2g3]} 55. Qd7+ $2 {[%mdl 8192]} (55. Qh4+ $15 Qxh4 56. gxh4 Nxb5 57. e6) 55... Kh6 {[%csl Gg6][%cal Rh2g3]} 56. g4 Qh3+ $1 57. Kf4 Nd5+ (57... Qg2 $142 58. Rh1+ Qxh1 59. g5+ Rxg5 60. Qe6+ Rg6 61. Qxg6+ Kxg6 62. e6 Qh2+ 63. Kf3 Kf5 64. e7 Ne2 65. e8=Q Ng1#) 58. Ke4 $19 {[#]} Qg2+ $1 59. Kxd4 {[#]} Qd2+ $2 ({Black should try} 59... Nb6 $1 $19 60. g5+ Rxg5 61. Qe6+ Rg6 62. Qxg6+ Kxg6) 60. Kc5 $11 {The position is equal.} Qxe1 61. Qxd5 a4 62. g5+ Rxg5 63. c7 Rxe5 {( -> ...Qc3+)} 64. c8=Q {White threatens Qh8+ and mate.} Rxd5+ 65. Kxd5 {Black must now prevent Qa6+.} Qd2+ 66. Kc6 Qc3+ 67. Kb7 Qxc8+ 68. Kxc8 {Precision: White = 55%, Black = 52%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.23"]
[Round "10"]
[White "Maghsoodloo, Parham"]
[Black "Bareev, Evgeny"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2679"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,61,-18,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,152,59,60,69,72,33,37,29,70,77,272,281,281,274,278,286,285,244,400,338,325,241,243,258,250,258,858,858]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 c5 7. h4 h5 8. Nf4 Bh7 9. g5 {B12: Caro-Kann: Advance Variation} Nc6 {LiveBook: 4 Games} (9... Bf5 10. Nxh5 cxd4 11. Nb5 d3 12. c3 Nc6 13. Ng3 Be4 14. Nxe4 dxe4 15. Qa4 Qd7 16. Qxe4 O-O-O {½-½ (38) Idani,P (2569)-Lupulescu,C (2637) Abu Dhabi 2017}) 10. Qxh5 {Black must now prevent Nxe6.} Nxd4 11. Nxe6 {The position is equal.} Nxe6 12. Bb5+ Ke7 {[#]} 13. g6 $1 {[%mdl 512]} Bxg6 (13... fxg6 14. Qf3) 14. Qxh8 d4 15. Bg5+ (15. Qxg8 dxc3 16. b3 (16. bxc3 $2 Qa5 $19) 16... Qd5 $19) 15... Nxg5 16. hxg5 $146 ({Predecessor:} 16. O-O-O Nh6 17. hxg5 Ng4 18. Qh4 Bf5 19. Rhg1 a6 20. g6+ {1-0 (20) Albesa,A (1813)-Drus,M (1449) LSS email 2012}) 16... dxc3 17. Rd1 $1 {[%cal Rd1d8]} Qc7 $2 (17... Qa5 $11 18. Rd7+ Ke6 19. Rxb7 cxb2+ 20. Ke2 Qc3 21. Bd7+ Ke7 22. Bf5+ Ke8 23. Qxg8 Qc4+ 24. Bd3 Bxd3+ 25. cxd3 Qc2+ 26. Ke3 Qc1+ 27. Ke2 Qc2+ 28. Ke3 Qc1+ 29. Ke2 Qc2+) 18. Rd7+ ({Don't go for} 18. Qxg8 $2 Qxe5+ 19. Kf1 cxb2 $19) ({White should play} 18. bxc3 $16 {Strongly threatening Rd7+.} Qxe5+ 19. Kf1 Qxg5 20. Qh2 (20. Qxg8 Kf6 $11)) 18... Qxd7 $1 $14 19. Bxd7 cxb2 {[#]} 20. O-O $1 Kxd7 21. Qxg8 {And now Rb1 would win.} c4 $1 22. Qh8 {Qh4 is the strong threat.} Kc7 $2 (22... Bxc2 $16 23. Qh3+ Kc6) 23. Qh4 $18 Rc8 {Black wants to play ...Kb8.} 24. Qd4 ({Weaker is} 24. Qxc4+ Kb8 $16) 24... Bxc2 25. Qxb2 Bf5 26. g6 fxg6 $2 {[#]} (26... Bxg6 27. Rc1 Bd3) 27. e6 $1 {[%mdl 512]} Re8 (27... Bxe6 28. Qe5+) 28. Qb5 Rxe6 29. Qxc4+ Kb8 30. Rd1 {[%cal Rd1d8]} Re8 $2 (30... Bd6 31. Qh4 Rf6 32. Qh8+ Rf8 33. Qxg7 Rd8) 31. Qf4+ {Precision: White = 71%, Black = 49%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.23"]
[Round "10"]
[White "Esipenko, Andrey"]
[Black "Van Foreest, Lucas"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2584"]
[BlackElo "2502"]
[Annotator "ChessBase"]
[PlyCount "81"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:00]} dxc4 {[%emt 0:00:15]} 5. e4 {[%emt 0:00:03]} Bb4 {[%emt 0:00:12]} 6. Bxc4 {[%emt 0:00:09]} Nxe4 {[%emt 0:00:06]} 7. O-O {[%emt 0:00:07]} Nxc3 {[%emt 0:00:03]} 8. bxc3 {[%emt 0:00:06]} Bd6 {[%emt 0:00:03]} 9. Ng5 {[%emt 0:00:40]} h6 {[%emt 0:00:58]} 10. Ne4 {[%emt 0:00:23]} O-O {[%emt 0:00:25]} 11. Qf3 {[%emt 0:00:14]} Be7 {[%emt 0:04:18]} 12. Re1 {[%emt 0:00:13]} Nd7 {[%emt 0:00:08]} 13. Rb1 {[%emt 0:00:28]} c5 {[%emt 0:03:10]} 14. Bd3 {[%emt 0:45:51]} cxd4 {[%emt 0:04:41]} 15. cxd4 {[%emt 0:00:14]} Re8 {[%emt 0:00:57]} 16. Bf4 {[%emt 0:04:10]} Nf8 {[%emt 0:17:54]} 17. Ng3 {[%emt 0:07:41]} Bd6 {[%emt 0:13:12]} 18. Be5 {[%emt 0:06:49]} Bxe5 {[%emt 0:06:17]} 19. dxe5 {[%emt 0:00:19]} Bd7 {[%emt 0:06:13]} 20. Rxb7 {[%emt 0:11:01]} Qa5 {[%emt 0:00:24]} 21. Re3 {[%emt 0:05:05]} Rab8 {[%emt 0:07:50]} 22. Rxb8 {[%emt 0:02:55]} Rxb8 {[%emt 0:00:11]} 23. h4 {[%emt 0:00:49]} Qxa2 {[%emt 0:03:29]} 24. Nh5 {[%emt 0:01:56]} Rb4 {[%emt 0:09:35]} 25. Qg3 {[%emt 0:03:35]} g6 {[%emt 0:06:08]} 26. Nf6+ {[%emt 0:00:21]} Kg7 {[%emt 0:01:04]} 27. Be4 {[%emt 0:01:56]} Rb5 {[%emt 0:07:49]} 28. Kh2 {[%emt 0:06:56]} Qa1 {[%emt 0:05:52]} 29. Rc3 {[%emt 0:01:05]} Qa5 {[%emt 0:00:56]} 30. f4 {[%emt 0:03:06]} Rc5 {[%emt 0:00:25]} 31. Ra3 {[%emt 0:00:09]} Qb6 {[%emt 0:00:03]} 32. Rb3 {[%emt 0:03:18]} Bb5 {[%emt 0:02:10]} 33. Rb1 {[%emt 0:00:23]} a6 {[%emt 0:02:35]} 34. h5 {[%emt 0:00:19]} Qd8 {[%emt 0:00:23]} 35. hxg6 {[%emt 0:01:15]} fxg6 {[%emt 0:01:14]} 36. Qa3 {[%emt 0:03:48]} Rc7 {[%emt 0:02:14]} 37. Qa5 {[%emt 0:00:04]} Rd7 {[%emt 0:01:10]} 38. Qe1 {[%emt 0:00:33]} Rd4 {[%emt 0:02:19]} 39. Qh4 {[%emt 0:01:37]} Rd1 {[%emt 0:01:59]} 40. Rxd1 {[%emt 0:00:00]} Qxd1 {[%emt 0:00:00]} 41. Ng4 {[%emt 0:01:19]} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.23"]
[Round "10"]
[White "Praggnanandhaa R"]
[Black "Chigaev, Maksim"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "2539"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,102,8,18,90,93,81,77,115,124,254,268,264,58,55,47,56,50,44,48,71,46,52,56,52,51,71,33,71,50,81,80,93,0,0,0,54,40,52,0,10,0,89,69,88,85,91,88,100,76,96,0,90,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-29973,-29974,-29974,-29975,-29975,-29976,-29976,-29977,-29980,-29981,-29981,-29982,-29982,-29983]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. f4 a6 7. Nxc6 bxc6 8. Bd3 d5 9. Qe2 Nf6 10. O-O Be7 {B46: Sicilian: Taimanov: 5 Nc3 a6} 11. Bd2 O-O 12. Rae1 Bb7 (12... Re8 13. Kh1 Bf8 14. e5 Nd7 15. Na4 g6 16. c4 Nc5 17. Nxc5 Bxc5 18. Rc1 {1-0 (44) Sutovsky,E (2673)-Pichot,A (2552) Caleta 2018}) 13. Kh1 {LiveBook: 6 Games} g6 (13... Nd7 $11) 14. exd5 $16 cxd5 {[#]} 15. f5 $1 {[%cal Rf5e6][%mdl 512] [#]} gxf5 $146 {[#]} (15... exf5 16. Qxe7) ({Predecessor:} 15... d4 16. fxe6 dxc3 17. Bxc3 Nd5 18. exf7+ Rxf7 19. Rxf7 Kxf7 {½-½ (75) Zagrebelny,S (2540)-Poluljahov,A (2527) Krasnodar 2003}) 16. Bxf5 $1 {[%mdl 512]} d4 {[#]} (16... exf5 $16 17. Qxe7 Qxe7 18. Rxe7 Bc8) 17. Bd3 $1 $18 Qc6 ({Don't play} 17... dxc3 $6 18. Bxc3 e5 19. Qxe5 $18) 18. Ne4 $2 (18. Rf3 $18) 18... Nxe4 $14 19. Bxe4 Qxe4 20. Qxe4 Bxe4 21. Rxe4 h5 22. Rxd4 (22. c4 {is interesting.} Rfd8 23. b3 a5 24. Re5 h4 25. a4) 22... Rfd8 23. Rxd8+ Rxd8 {[%mdl 4096] Endgame KRB-KRB} 24. Be3 f5 25. Kg1 Rc8 26. c3 Kf7 27. Rd1 e5 28. Rd5 (28. Rd7 $16) 28... Ke6 $11 29. Ra5 Rc6 (29... f4 $11 30. Bf2 (30. Rxa6+ Kf5 $16) 30... Rc6) 30. Kf1 Bd8 31. Rc5 Rd6 $1 32. Rc8 f4 (32... Kd7 $1 $11 33. Ra8 Rd1+ 34. Ke2 Rb1) 33. Bc5 $16 Rd7 34. Ke2 Kf5 35. Bf2 Be7 36. Ra8 h4 37. Rxa6 (37. h3 $16) 37... h3 (37... Bg5 $1 $11 {keeps the balance.}) 38. g3 ({White should play} 38. gxh3 $16 {aiming for a4.} Bg5 39. h4) 38... Bg5 $11 {Threatens to win with ...Rd2+!} 39. Ra5 Rd2+ 40. Kxd2 ({Avoid the trap} 40. Kf3 $2 Rd3+ 41. Ke2 fxg3 $19) 40... fxg3+ 41. Kd3 $1 gxh2 42. Rxe5+ $1 Kxe5 {KB-KB} 43. Bg3+ Bf4 44. Bxh2 $1 Bxh2 {KB-K3P} 45. Ke3 $2 {[%mdl 8192] [#]} (45. Ke2 $11) 45... Bg3 $1 {Black mates.} 46. Kf3 Be1 47. a4 Kd5 48. a5 Kc5 49. b3 Kb5 50. b4 Bh4 51. c4+ Ka6 {Precision: White = 56%, Black = 60%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.23"]
[Round "10"]
[White "Keymer, Vincent"]
[Black "Kovalev, Vladislav"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "2500"]
[BlackElo "2687"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,122,113,113,117,114,116,113,111,89,104,86,87,73,99,93,94,84,82,104,100,83,78,90,105,76,73,47,77,77,67,68,95,87,97,72,81,83,75,77,91,77,74,77,76,73,81,81,94,0,0,-24,-41,-29,-35,-25,-21,-31,-35,-112,-97,-116,-107,-116,-111,-132,-147,-151,-143,-218,-210,-210,-211,-211,-212,-416,-394,-663,-662,-662,-312,-662,-242,-215,0,-662,-662,-661,-659,-581,-619,-1000,-936,-983,-854,-955,-936,-854,-586,-941,-938,-935,-929,-931,-921,-909,-901,-871,-856,-957,-957]} 1. c4 g6 2. d4 Bg7 3. Nf3 d6 4. g3 e5 5. Nc3 {[%cal Bb1c3,Bc3b5,Bb5c7][%mdl 32]} Nc6 6. dxe5 dxe5 {A41: 1 d4 d6: Tartakower System and Modern Defence} 7. Qxd8+ Kxd8 8. Bg5+ {LiveBook: 11 Games} f6 {White is better.} (8... Nge7 9. O-O-O+ Bd7 10. Nd5 f5 11. Nf6 Bxf6 12. Bxf6 Rf8 13. Bxe5 Kc8 14. Bf4 {1-0 (31) Arkell,K (2436)-Fernandez,D (2461) Telford 2018}) 9. O-O-O+ Ke8 10. Nb5 Kf7 11. Nxc7 Rb8 12. Be3 Nh6 13. Nb5 $146 ({Predecessor:} 13. Bg2 Ng4 14. Bc5 {½-½ (68) Gregor,J (2269)-Kulhanek,T (2302) Czech Republic 2018}) 13... Nf5 14. Bc5 a6 15. Nd6+ Nxd6 16. Bxd6 (16. Rxd6 Bf8 $15) 16... Ra8 17. e3 Be6 18. Nd2 Rhd8 19. Bc5 f5 20. Be2 e4 21. Bb6 Rdc8 22. Kb1 Ne5 23. b3 a5 24. f3 a4 {Hoping for ...axb3.} 25. Bd4 $1 Nc6 26. Bxg7 Kxg7 27. fxe4 fxe4 28. Kb2 ({Much worse is} 28. Nxe4 axb3 29. axb3 Bf5 $15) 28... Nb4 29. Nxe4 a3+ 30. Ka1 Rf8 31. Nc5 (31. Rd2 $16) 31... Rae8 $11 32. Rd2 Rf2 {And now ...Bg4! would win.} 33. Ne4 ({Don't go for} 33. Nxb7 $2 Bg4 $1 $19 {[%mdl 512]}) 33... Rg2 {aiming for ...Bf5.} 34. Bf3 Rxd2 35. Nxd2 Rd8 36. Ne4 (36. Bd5 $1 $15) 36... Rd3 $1 $17 37. Nc5 Rxe3 {Threatens to win with ...Bc8.} 38. Nxe6+ Rxe6 {[%mdl 4096] Endgame KRB-KRN} 39. Kb1 (39. Bxb7 $2 Re2 $19) 39... Re3 $1 {[%cal Re3f3][%mdl 1024] Black has strong compensation.} 40. Rf1 ({But not} 40. Bxb7 $2 Re2) 40... b6 41. Bg4 (41. h3 $17) 41... h5 $1 $19 {[%cal Rh5g4]} 42. Bf3 {[#]} Kh6 $1 43. h3 {[#]} g5 $1 44. Ka1 $2 (44. Kc1 Nxa2+ 45. Kd2 Rxb3 46. Kc2 Rc3+ 47. Kd2) 44... Rc3 45. g4 $2 (45. Kb1 Rc2 46. Bd1 Rb2+ 47. Ka1) 45... Rc2 46. Be4 Rxa2+ 47. Kb1 Rb2+ $2 (47... Re2 48. Bf5 h4) 48. Ka1 Ra2+ $2 (48... Re2 49. Bb1 a2) 49. Kb1 Re2 {Black is clearly winning.} 50. Bf5 h4 51. Rd1 Kg7 52. Ka1 Ra2+ 53. Kb1 Rh2 54. Be4 Re2 55. Bf5 Kf6 56. Rd6+ Ke7 57. Rd7+ Ke8 {( -> ...Re1+)} 58. Rd1 Rh2 59. Re1+ Kd8 60. Rd1+ Kc7 61. Rd7+ Kc6 {Precision: White = 62%, Black = 81%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.23"]
[Round "10"]
[White "Paehtz, Elisabeth"]
[Black "Saduakassova, Dinara"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "2477"]
[BlackElo "2472"]
[Annotator "ChessBase"]
[PlyCount "37"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:00]} Qc7 {[%emt 0:00:00]} 6. Nb3 {[%emt 0:00:00]} Nf6 {[%emt 0:03:09]} 7. Bd3 {[%emt 0:00:05]} Be7 {[%emt 0:03:27]} 8. O-O {[%emt 0:01:14]} O-O {[%emt 0:01:45]} 9. f4 {[%emt 0:01:01]} d6 {[%emt 0:00:35]} 10. Qe2 {[%emt 0:00:42]} a6 {[%emt 0:03:03]} 11. Kh1 {[%emt 0:01:40]} b5 {[%emt 0:03:36]} 12. a3 {[%emt 0:00:41]} Bb7 {[%emt 0:00:58]} 13. Bd2 {[%emt 0:00:15]} Rac8 {[%emt 0:14:38]} 14. Rae1 {[%emt 0:10:06]} b4 {[%emt 0:00:57]} 15. axb4 {[%emt 0:04:52]} Nxb4 {[%emt 0:00:04]} 16. Nb5 {[%emt 0:07:46]} axb5 {[%emt 0:00:11]} 17. Bxb4 {[%emt 0:00:04]} e5 {[%emt 0:08:08]} 18. Ba5 {[%emt 0:14:32]} Qb8 {[%emt 0:02:21]} 19. fxe5 {[%emt 0:05:08]} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.23"]
[Round "10"]
[White "Kuipers, Stefan"]
[Black "Gledura, Benjamin"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "2470"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,93,36,32,14,27,10,48,53,52,52,48,54,67,11,7,8,10,5,0,0,0,0,0,0,24,0,0,0,0,0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be3 a6 7. Qf3 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2} Bd6 8. O-O-O Be5 9. Nxc6 bxc6 10. Bd4 Nf6 11. Bxe5 Qxe5 {LiveBook: 16 Games} 12. Qe3 Ng4 13. Qe1 {[#]} Rb8 $146 ({Predecessor:} 13... Qc5 14. Rd2 Rb8 {0-1 (40) Timman,J (2593)-Van Kampen,R (2615) Wijk aan Zee 2015}) 14. f3 Nf6 15. Qg3 Qxg3 16. hxg3 d5 17. Bd3 (17. g4 $14) 17... h6 $11 18. g4 Rg8 19. Rhe1 Ke7 20. Na4 a5 21. c4 Rd8 22. b3 Rb4 23. exd5 cxd5 {The position is equal.} 24. cxd5 Nxd5 25. Bc4 {[#] Rxd5 is the strong threat.} Nf4 26. Re5 Rxd1+ 27. Kxd1 Nxg2 28. Ke2 Bd7 29. Rxa5 Bxa4 30. Rxa4 Rxa4 31. bxa4 {[%mdl 4096] Endgame KB-KN} Kd6 32. a5 Kc5 33. a6 Kb6 34. Kd3 g6 {[%cal Bg7g6,Bg6h5,Bh5h4][%mdl 32]} 35. Ke4 h5 36. gxh5 gxh5 37. Bf1 Nh4 38. f4 Nf5 {aiming for ...Ng3+.} 39. Ke5 Ne3 40. Bh3 h4 41. Kf6 Nd5+ 42. Kxf7 Nxf4 43. Bf1 e5 44. Kf6 h3 {[#]} 45. Bxh3 $1 {[%mdl 512]} Nxh3 46. Kxe5 Kxa6 47. Ke4 {Accuracy: White = 77%, Black = 89%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.25"]
[Round "11"]
[White "Kovalev, Vladislav"]
[Black "Maghsoodloo, Parham"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2687"]
[BlackElo "2679"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,134,22,41,20,45,0,14,-14,-6,-17,0,0,0,0,0,-3,0,-9,-10,-23,0,0,0,0,0,0,0,0,0,0,0,0,4,-12,28,-7,-4,-6,0,0,0,0,58,0,0,0,0,0,4,5,6,14,8,0,0,0,0,0,0,0,0,0,0,0,33,33,56,37,258,272,252,248,192,193,295,295,237,295,229,295,281,295,295,294,295,24,24,0,291,288,295,290,276,0,233,0,264,258,488,477,425,383,477,383,29992,29993,29993,29993,29994,29995,29995,29996,29996,29997,29997,29998,29998,29999,29999]} 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. Nf3 g6 6. Bc4 {B01: Scandinavian Defence} (6. Be2 Bg7 7. O-O O-O 8. h3 Nc6 9. Be3 b6 10. Qd2 Bb7 11. Rad1 e6 12. Bh6 Ne7 13. Bxg7 Kxg7 {½-½ (23) Giri,A (2783)-Nakamura,H (2746) St Petersburg 2018}) 6... Bg7 7. O-O O-O 8. h3 a6 9. a4 Nc6 {[%cal Bb8c6,Bc6e7,Be7d5,Bd5f4][%mdl 32] LiveBook: 4 Games} 10. Re1 b6 11. b3 $146 {White wants to play Ba3.} ({Predecessor:} 11. Bg5 Bb7 12. Bb3 h6 13. Bh4 {1-0 (44) Warmerdam,M (2350)-Admiraal,M (2441) chess.com INT 2017}) 11... e6 12. Be3 Bb7 13. Qe2 Ne7 14. Rad1 Qd6 15. Bg5 Ned5 16. Bd2 Nf4 17. Bxf4 $1 Qxf4 18. d5 exd5 19. Nxd5 Nxd5 20. Bxd5 c6 21. Qe7 Rab8 $1 22. Bc4 b5 23. Bf1 c5 24. Qd6 Qf5 $132 {[%mdl 2048] Black has counterplay} 25. Bd3 Qc8 26. Be4 bxa4 {Threatening ...a3.} 27. bxa4 a5 28. Bxb7 Rxb7 29. Ne5 c4 (29... Re8 $11) 30. Nd7 (30. Nc6 $14) 30... Rd8 $11 31. Nf6+ Bxf6 $1 32. Qxf6 Rbd7 33. Rxd7 Qxd7 {[%mdl 4096] Endgame KQR-KQR} 34. Re4 Rc8 35. Re7 Qd1+ $1 36. Kh2 Rf8 37. Qc3 Qd6+ 38. Qe5 Qb4 39. c3 Qxa4 40. f4 Qa3 41. h4 {[%cal Bh3h4,Bh4h5][%mdl 32]} h6 42. h5 $1 {[%cal Rh5g6]} g5 $2 (42... gxh5 $14 43. Qf6 Kh7) 43. fxg5 $18 Qc1 44. gxh6 (44. Qxa5 Qf4+ 45. g3 Qf2+ 46. Kh3 Qf1+ 47. Kh4 Qh1+ 48. Kg4 f5+ 49. gxf6 Qd1+ 50. Kh4 Qh1+ 51. Kg4 Qd1+ 52. Kh4 Qh1+ 53. Kg4 $11) 44... Qxh6 45. Ra7 f5 (45... f6 $142 46. Qf5 Kh8 47. Rxa5 Qe3) 46. Qd5+ Kh8 {[#]} 47. Qd4+ $1 ({Don't do} 47. Rxa5 $6 Qxh5+ 48. Kg1 Qh4 $16) 47... Kg8 48. Qxc4+ Kh8 49. Qd4+ ({Not} 49. Rxa5 Qxh5+ 50. Kg1 Qd1+ 51. Kh2 Qh5+ 52. Kg1 Qd1+ 53. Kh2 Qh5+ $14) 49... Kg8 50. Kg1 Re8 {If Black can now play ...Qc1+ this consolidates a bit.} 51. Qd5+ $2 ({White must play} 51. Rxa5 $18 Qxh5 52. Qd3) 51... Kh8 $1 $11 {( -> ...Re1+)} 52. Qd4+ $2 {[%mdl 8192]} (52. Qd3 $11 Qc1+ 53. Kh2) 52... Kg8 $18 53. Rxa5 Qxh5 54. Qd5+ Kh8 55. Qd4+ Kg8 {intending ...Re1+.} 56. Qd5+ Kh8 $1 57. Qxf5 Qd1+ $2 {[#]} (57... Qxf5 58. Rxf5 Rc8) 58. Kh2 $1 ({Stronger than} 58. Qf1 Re1 $11) 58... Qd6+ 59. g3 {Threatening mate with Qh5+.} Qd2+ 60. Kh3 {Intending Qf6+ and mate.} Qxc3 $2 (60... Qh6+ $18 61. Qh5 Qxh5+ 62. Rxh5+ Kg7) 61. Qh5+ {White mates.} Kg7 62. Rg5+ Kf6 63. Rf5+ Ke6 64. Qf7+ Kd6 65. Rd5+ Kc6 66. Qd7+ Kb6 67. Rb5+ Ka6 68. Qb7# {Precision: White = 61%, Black = 48%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.25"]
[Round "11"]
[White "Bareev, Evgeny"]
[Black "Paehtz, Elisabeth"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2650"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,6,8,0,1,4,21,0,0,-18,0,-20,3,-32,-29,-35,-35,-25,-38,-22,-28,-33,-31,-36,-30,-48,-32,-102,28,0,16,-23,0,-102,-94,-96,-100,-110,-101,-104,-89,-107,-53,-50,-56,-50,-70,-543,0,0,0,0,0,0]} 1. g3 Nf6 2. Bg2 d5 3. d3 g6 4. f4 c6 5. Nf3 Qb6 {LiveBook: 7 Games} (5... Bg7 6. O-O O-O 7. c3 Bg4 8. Ne5 Be6 9. Nd2 Nbd7 10. d4 Bf5 11. e3 h5 12. Qe2 Ne4 13. Nxe4 dxe4 14. Nxd7 Qxd7 15. b3 {0-1 (29) Bartel,M (2622)-Malakhov,V (2694) Berlin 2015}) 6. Nc3 {A00: Irregular Openings} (6. Qd2 {with more complications.} Bg7 7. Nc3 Nbd7 8. a4 d4 9. Nd1) 6... Ng4 {White must now prevent ...Qf2+.} 7. d4 Bg7 8. h3 $146 ({Predecessor:} 8. e4 dxe4 9. Nxe4 O-O 10. c3 Nd7 11. Qe2 Ngf6 12. Nxf6+ Nxf6 {0-1 (51) Mayer,F (2343)-Dauenheimer,T (2113) Germany 2006}) 8... Nf6 9. O-O O-O 10. g4 Ne4 11. Nxe4 dxe4 12. Ne5 f6 13. Nc4 Qa6 $1 {[%cal Ra6c4]} 14. b3 {Hoping for f5.} b5 15. Ne3 f5 16. gxf5 gxf5 17. Bb2 c5 18. Kh1 (18. dxc5 $2 Bxb2 19. Rb1 (19. Qd5+ $2 Be6 $19) 19... Bg7 $19) 18... Bb7 (18... cxd4 $1 $17 19. Bxd4 Rd8) 19. Rg1 Qh6 20. Bf1 Kh8 {[%cal Bg8h8,Bh8g7,Bg7f7][%mdl 32]} 21. Rb1 (21. Rxg7 $11 {remains equal.} Kxg7 22. dxc5+ Kf7 23. Qd4 Qxf4 24. Qg7+ Ke8 25. Qxh7 Qxe3 26. Qg6+ Rf7 27. Qg8+ Rf8 28. Qg6+ Rf7 29. Qg8+ Rf8 30. Qg6+) 21... Qxf4 $17 22. Rxg7 Kxg7 23. dxc5+ {[#]} Kf7 $1 ({And not} 23... e5 24. Qd6 $16) 24. Qd4 Rg8 {And now ...Qg3 would win.} 25. Bg2 Nc6 (25... Qg3 $17 {Threatens to win with ...f4.} 26. Rf1 f4) 26. Qd7 $1 $15 Bc8 (26... Qxe3 27. Rf1 $11) 27. Qxc6 Qxe3 28. Qxa8 $4 {[%mdl 8192] [#]} ({White has to play} 28. Rf1 $1 $15 Be6 29. Qxe4) 28... Rxg2 $2 (28... Be6 $1 $19 29. Qc6 (29. Qxa7 Rxg2 30. Kxg2 Qxe2+ 31. Kh1 Qf3+ 32. Kh2 e3 $19) 29... Rxg2 30. Kxg2 Qxe2+ 31. Kg1 Qe3+ 32. Kh1 f4) 29. Kxg2 $11 {The position is equal.} Qxe2+ 30. Kh1 Qf3+ 31. Kh2 {Precision: White = 47%, Black = 65%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.25"]
[Round "11"]
[White "L'Ami, Erwin"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2643"]
[BlackElo "2500"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,127,19,22,14,22,36,27,36,35,43,35,39,45,45,38,30,45,33,40,55,63,47,39,31,42,37,20,35,32,39,0,0,0,0,0,7,0,25,0,2,0,0,0,15,0,0,0,18,0,4,7,20,0,0,0,0,1,12,0,0,0,0,2,38,9,16,16,24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e5 7. Nf3 Be7 8. Bg5 Be6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} 9. Bxf6 Bxf6 10. Nd5 Nd7 11. Bc4 O-O (11... Rc8 12. Qe2 Nb6 13. Nxf6+ Qxf6 14. Bxe6 Qxe6 15. a5 Nd7 16. c3 {1-0 (41) Anand,V (2759)-Grischuk,A (2766) Paris 2018}) 12. O-O {LiveBook: 5 Games} Nb6 13. Bb3 Be7 $146 ({Predecessor:} 13... Rc8 14. Nxf6+ gxf6 15. Nd2 Nc4 16. Nxc4 Bxc4 {1-0 (32) Glek,I (2551)-Van der Stricht,G (2427) Cappelle-la-Grande 2001}) 14. a5 Nd7 15. Nd2 {[%cal Bf3d2,Bd2c4,Bc4b6][%mdl 32]} Rc8 16. Nc4 Nc5 17. Ncb6 Rc6 18. Nb4 Rc7 19. Bd5 Nd7 20. c3 Re8 21. Nxd7 Qxd7 22. Qb3 Bd8 23. Nd3 Bg5 24. Kh1 h5 25. Rad1 h4 26. Bxe6 (26. Ra1 {keeps more tension.} h3 27. g3 Qe7 28. Rae1 Qd7 29. f3) 26... Qxe6 27. Qxe6 fxe6 28. Rfe1 Rd8 29. Kg1 Kf7 30. g3 Bf6 31. Kf1 g5 32. f3 Rc4 33. Nf2 Rc5 34. Ra1 Rd7 35. Ra4 Rdc7 36. Ke2 Rc4 37. Rxc4 Rxc4 $11 {[%mdl 4096] Endgame KRB-KRN} 38. Ra1 Bd8 39. Kd3 Rc7 40. Ng4 Ke8 41. b4 Rf7 42. Ke2 Kd7 43. Rd1 {[#] Black must now prevent Nxe5+.} Kc7 44. c4 Be7 45. b5 Rf8 {The position is equal.} 46. Nf2 axb5 47. cxb5 Ra8 48. Ra1 Kd7 49. Nd3 hxg3 50. hxg3 Bd8 51. a6 bxa6 52. bxa6 Bb6 53. Nf2 Kc6 54. Nh3 Bd8 55. f4 exf4 56. gxf4 gxf4 57. Nxf4 Bf6 58. Ra3 Kb6 59. Rb3+ Kc6 60. Nxe6 Rxa6 61. Nf4 Ra2+ 62. Kf3 Be5 63. Nd3 {[#] Threatens to win with Nb4+.} Ra4 64. Nxe5+ {Accuracy: White = 70%, Black = 76%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.25"]
[Round "11"]
[White "Gledura, Benjamin"]
[Black "Esipenko, Andrey"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2615"]
[BlackElo "2584"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,95,0,-1,4,12,4,12,4,15,16,12,13,4,4,0,0,0,0,3,6,6,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,0,0,0,0]} 1. Nf3 Nf6 2. c4 c5 3. b3 e6 4. Bb2 b6 5. g3 Bb7 6. Bg2 Be7 7. O-O O-O 8. Nc3 d5 9. cxd5 Nxd5 10. d4 Nxc3 11. Bxc3 {The position is equal.} cxd4 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7} 12. Qxd4 Qxd4 13. Nxd4 Bxg2 14. Kxg2 Rc8 15. Rac1 Nc6 16. Nxc6 Rxc6 17. Be5 Rxc1 18. Rxc1 $11 {[%mdl 4096] Endgame KRB-KRB} f6 {[#]} 19. Bf4 $146 ({Predecessor:} 19. Bd4) 19... e5 20. Be3 Bd6 21. f4 exf4 22. gxf4 Kf7 23. Kf3 Rd8 24. a4 Ke6 25. Rc4 f5 26. Bd4 g6 27. e4 Bc5 28. exf5+ gxf5 29. Bxc5 bxc5 30. Rxc5 {KR-KR} Rd3+ 31. Kg2 Rxb3 32. Re5+ Kf6 33. Ra5 Kg6 34. Rxa7 Kh5 35. h3 Rb2+ 36. Kf3 Rb3+ 37. Ke2 h6 38. Ra5 Rxh3 39. Rxf5+ Kg4 40. Rf8 Ra3 41. f5 Rxa4 42. f6 Kf5 43. f7 {[#] Intending Rg8 and mate.} Ra7 44. Rh8 Re7+ 45. Kd3 Rxf7 46. Rxh6 Rf6 47. Rxf6+ Kxf6 48. Ke4 {Accuracy: White = 78%, Black = 93%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.25"]
[Round "11"]
[White "Chigaev, Maksim"]
[Black "Korobov, Anton"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2604"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,50,46,39,52,47,32,26,47,32,46,13,37,25,46,0,19,18,19,0,0,0,0,5,80,74,89,0,0,0,0,0,0,0,0,0,0,0,0,0,8]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Nbd7 7. f3 h5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} 8. Qd2 e6 9. Bc4 (9. a4 b6 10. Bc4 Qc7 11. Bxe6 fxe6 12. Nxe6 Qc4 13. Nxf8 Rxf8 14. Qxd6 Kf7 15. O-O-O {1-0 (28) Morozevich,A (2665)-Fedoseev,V (2724) Moscow 2018}) 9... Ne5 {White has an edge.} 10. Bb3 b5 11. a4 b4 12. Na2 a5 $146 ({Predecessor:} 12... d5 13. exd5 Nxd5 14. Bg5 f6 15. Bh4 {1-0 (37) Smeets,J (2550)-Bosboom,M (2402) Netherlands 2006}) 13. c3 d5 14. exd5 Nxd5 15. Bxd5 Qxd5 16. Nb5 $1 {[%cal Rb5c7]} Qxd2+ $1 17. Bxd2 {Strongly threatening Nc7+.} Ba6 (17... Kd7 $11 {remains equal.}) 18. Nc7+ $16 {[%mdl 64] [#] Double Attack} Kd7 19. Nxa6 (19. Nxa8 $16 {aiming for Be3.} Nd3+ 20. Kd1) 19... Rxa6 $11 {The position is equal.} 20. cxb4 axb4 21. b3 Bd6 22. Rd1 Ke7 23. Bxb4 Bxb4+ 24. Nxb4 Rb6 25. Nd3 Nxd3+ {Accuracy: White = 49%, Black = 68%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.25"]
[Round "11"]
[White "Van Foreest, Lucas"]
[Black "Praggnanandhaa R"]
[Result "1/2-1/2"]
[ECO "B41"]
[WhiteElo "2502"]
[BlackElo "2539"]
[Annotator "RC"]
[PlyCount "78"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:14]} cxd4 {[%emt 0:00:06]} 4. Nxd4 {[%emt 0:00:04]} a6 {[%emt 0:00:07]} 5. c4 {[%emt 0:00:06]} Nf6 {[%emt 0:00:06]} 6. Nc3 {[%emt 0:00:51]} Qc7 {[%emt 0:00:14]} 7. Be2 {[%emt 0:00:38]} Bb4 {[%emt 0:00:43]} 8. Qd3 {[%emt 0:01:18]} O-O {[%emt 0:00:42]} 9. O-O {[%emt 0:02:36]} Bxc3 {[%emt 0:07:14]} 10. bxc3 {[%emt 0:01:38]} d6 {[%emt 0:00:16]} 11. Nb3 {[%emt 0:10:23]} Nbd7 {[%emt 0:08:55]} 12. Bf4 {[%emt 0:06:09]} e5 {[%emt 0:05:13]} 13. Bg5 {[%emt 0:03:07]} h6 {[%emt 0:04:36]} 14. Bh4 {[%emt 0:01:38]} g5 {[%emt 0:03:41]} 15. Bg3 {[%emt 0:00:12]} Nc5 {[%emt 0:01:10]} 16. Nxc5 {[%emt 0:00:55]} Qxc5 {[%emt 0:00:27]} 17. Rfd1 {[%emt 0:10:44]} Rd8 {[%emt 0:04:47]} 18. Rab1 {[%emt 0:01:35]} b5 {[%emt 0:08:56]} 19. cxb5 {[%emt 0:19:21]} axb5 {[%emt 0:12:22]} 20. Qxb5 {[%emt 0:13:57]} Nxe4 {[%emt 0:05:50]} 21. Qxc5 {[%emt 0:04:53]} Nxc5 {[%emt 0:01:39]} 22. Bxe5 {[%emt 0:02:21]} Bf5 {[%emt 0:01:52]} 23. Bf6 {[%emt 0:01:46]} Bxb1 {[%emt 0:05:01]} 24. Bxd8 {[%emt 0:01:44]} Bc2 {[%emt 0:10:58]} 25. Rxd6 {[%emt 0:06:00]} Ne4 {[%emt 0:00:17]} 26. Rd4 {[%emt 0:00:15]} Nxc3 {[%emt 0:01:48]} 27. Bf3 {[%emt 0:01:53]} Be4 {[%emt 0:06:17]} 28. Rd2 {[%emt 0:08:52]} Bxf3 {[%emt 0:00:33]} 29. gxf3 {[%emt 0:00:03]} Rxa2 {[%emt 0:00:33]} 30. Rxa2 {[%emt 0:00:07]} Nxa2 {[%emt 0:00:04]} 31. Ba5 {[%emt 0:06:36]} Nc1 {[%emt 0:00:08]} 32. Bd2 {[%emt 0:00:22]} Ne2+ {[%emt 0:01:26]} 33. Kg2 {[%emt 0:00:36]} Nd4 {[%emt 0:00:42]} 34. h4 {[%emt 0:00:47]} f6 {[%emt 0:01:08]} 35. Bc3 {[%emt 0:00:24]} Nf5 {[%emt 0:00:07]} 36. Bxf6 {[%emt 0:00:06]} Nxh4+ {[%emt 0:00:04]} 37. Kg3 {[%emt 0:00:05]} Kf7 {[%emt 0:00:10]} 38. Bxg5 {[%emt 0:00:21]} hxg5 {[%emt 0:00:07]} 39. Kg4 {[%emt 0:00:13]} Nxf3 {[%emt 0:00:34]} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.25"]
[Round "11"]
[White "Saduakassova, Dinara"]
[Black "Kuipers, Stefan"]
[Result "1/2-1/2"]
[ECO "D43"]
[WhiteElo "2472"]
[BlackElo "2470"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,122,17,6,17,18,31,39,39,38,33,35,33,38,40,0,4,9,12,0,13,13,13,13,15,6,16,6,9,7,12,6,13,7,7,0,0,0,8,7,12,6,15,6,6,6,10,6,14,13,13,0,17,4,14,0,0,0,0,0,5,0,0,0,0,0,5,0,0,0,18,22,41,0,0,0,0,1,49,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. cxd5 exd5 6. Qc2 g6 7. Bg5 Bg7 8. e3 Bf5 9. Bd3 Bxd3 10. Qxd3 O-O {D35: Queen's Gambit Declined: Exchange Variation} 11. O-O Nbd7 12. b4 {[%cal Bb2b4,Bb4b5][%mdl 32] LiveBook: 5 Games} Re8 13. b5 (13. Rab1 h6 14. Bh4 g5 15. Bg3 Ne4 16. b5 Qa5 17. bxc6 bxc6 18. Rfc1 {1-0 (42) Kryakvin,D (2588)-Pershin,D (2400) St Petersburg 2018}) 13... h6 14. Bxf6 Bxf6 $146 ({Predecessor:} 14... Nxf6 15. bxc6 bxc6 16. Rac1 Ne4 17. Na4 Qa5 18. Qc2 {½-½ (58) Stojanovic,Z (2262)-Rosic,S (2305) Sremska Mitrovica 2006}) 15. Rfc1 Nb6 16. bxc6 bxc6 17. Rab1 Rc8 18. Nd2 c5 19. dxc5 Rxc5 20. Nb3 Rxc3 21. Rxc3 Bxc3 22. Qxc3 Qd7 23. Rd1 Qa4 24. Qb2 Rc8 25. h3 Qb4 (25... h5 {looks sharper.} 26. Ra1 Qb5 27. Qe5 Qd7 28. Nd4 Nc4) 26. Qe2 Qc4 27. Qd2 Qa4 28. Qe2 Qc4 29. Qe1 Qa4 30. Qd2 Rc4 31. Qb2 Rc8 32. Rd4 Rc4 33. Rd2 Qb4 34. Qf6 Rc8 35. Rd4 Rc4 36. Rd2 Rc8 37. Kh2 Qc3 38. Qe7 (38. Qf3 {with more complications.} Qb4 39. Qe2 Qc4 40. Qd1 h5 41. Kg1) 38... Qc7+ 39. Qxc7 Rxc7 $11 {[%mdl 4096] Endgame KRN-KRN} 40. Nd4 Rc1 41. Ne2 Rc5 42. Nf4 Kf8 43. g4 Ke7 44. Kg3 Ra5 45. h4 Ra3 46. h5 Kf6 47. Rc2 gxh5 48. Nxh5+ Ke5 49. Kh4 d4 {[#] Hoping for ...d3.} 50. f4+ Ke4 {White must now prevent ...d3.The position is equal.} 51. exd4 Nd5 52. Ng3+ Kf3 53. Nf5 Nxf4 54. Nxh6 f6 55. Ng8 Ng6+ 56. Kh5 Nf4+ 57. Kh4 Ng6+ 58. Kh5 Nf4+ 59. Kh4 Ng6+ 60. Kh5 Nf4+ 61. Kh4 Ng6+ {Accuracy: White = 59%, Black = 66%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.26"]
[Round "12"]
[White "Korobov, Anton"]
[Black "Keymer, Vincent"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2699"]
[BlackElo "2500"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,93,29,0,15,22,31,0,0,0,0,0,0,0,0,7,8,0,0,0,0,-8,-7,-28,-12,-23,5,-17,0,0,0,0,4,0,0,0,0,-13,0,0,0,0,167,152,179,167,221,216,220,207,227,227,265,252,254,247,522,517,397,231,467,463,456,334,264,66,418,418,495,404,456,479,456,453,369,387,629,618,781,710,707,691,631,619]} 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. a3 g6 {D35: Queen's Gambit Declined: Exchange Variation} 8. Nf3 Bg7 9. Be3 O-O {The position is equal.} 10. Be2 Nc6 11. O-O cxd4 12. cxd4 b6 13. h4 $146 ({Predecessor:} 13. Qa4 Bb7 14. Rad1 Ne7 15. Bd3 {1-0 (57) Caruana,F (2807)-Dominguez Perez,L (2739) Saint Louis 2017}) 13... Bb7 14. h5 gxh5 15. Rc1 Rc8 16. e5 Ne7 17. Rxc8 Qxc8 18. Bd3 Qc6 19. Qb1 Ng6 20. Rc1 Qd7 21. Ng5 Rd8 22. Be4 Bd5 23. Bxd5 exd5 24. f4 Qg4 25. Rc7 {[%mdl 64] [#] Double Attack} Rf8 26. e6 f6 $2 (26... fxe6 $11 27. Qc2 Qf5) 27. e7 $18 fxg5 28. exf8=Q+ Nxf8 (28... Bxf8 {was worth a try.} 29. Qb3 Ne7) 29. Qb3 (29. Rxa7 gxf4 30. Bf2 f3 $11) (29. fxg5 Bxd4 30. Qb3 Qe4 $16) 29... gxf4 30. Bf2 (30. Qxd5+ $6 Qe6 $16) 30... Qe6 31. Rxa7 h4 32. Rb7 Qe4 33. Qf3 (33. Qxb6 $6 f3 $16) (33. Rxb6 Bxd4 34. Bxd4 h3 $16) 33... h3 $2 (33... Bxd4 34. Qxe4 Bxf2+ 35. Kxf2 dxe4 36. Rxb6 e3+ 37. Kf3 Kf7 38. Kxf4 e2) 34. Qg4 {[%csl Gb7][%cal Rg4g7] [#]} Ng6 35. Rb8+ (35. Qxh3 $142 {Strongly threatening Qd7.} Ne7 36. Kh2) 35... Nf8 $2 (35... Kf7 36. Rb7+ (36. Rxb6 Bxd4 37. Rb7+ Kf6 $11) 36... Ne7 37. Qh5+ (37. gxh3 Bxd4 38. Bxd4 Qxd4+ 39. Kh2 Qb2+ 40. Qg2 Qe5 $11) 37... Kg8 38. Rb8+ (38. Qxh3 Bxd4 39. Qg4+ Kf8 $16) 38... Bf8 39. Qxh3 Qg6) 36. gxh3 h5 37. Qxh5 Bxd4 {( -> ...Qe1+)} 38. Qg5+ $2 $40 {[%mdl 128] White has some attack.} ({White should try} 38. Re8 $18 Bxf2+ 39. Kxf2 Qd4+ 40. Kg2) 38... Bg7 $4 {[%mdl 8192]} (38... Kf7 $14 39. Bxd4 Qxd4+ 40. Kh2 Qb2+ 41. Qg2 Qe5 42. Rb7+ (42. Rxb6 f3+ 43. Qg3 Qe2+ 44. Kh1 Qf1+ 45. Kh2 Qe2+ 46. Kh1 Qf1+ 47. Kh2 Qe2+ $11) 42... Ke8) 39. Rxb6 d4 40. Rb4 Ne6 41. Rb8+ Nf8 42. Rd8 Qb1+ 43. Kh2 Qc2 $2 (43... Qb2 44. Qxf4 Qe2) 44. Qxf4 {White is clearly winning.} d3 45. Kg2 Qc6+ 46. Qf3 Qg6+ 47. Kh1 {Accuracy: White = 55%, Black = 39%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.26"]
[Round "12"]
[White "Maghsoodloo, Parham"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "2679"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,31,35,42,22,30,0,4,-26,-27,-25,-27,-29]} 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Nh6 {[%cal Bg8h6,Bh6f5,Bf5h4,Bh4g6][%mdl 32]} 7. O-O Nf5 8. dxc5 Bxc5 9. Bd3 {C02: French: Advance Variation} Nh4 10. Nbd2 {[%cal Bb1d2,Bd2b3,Bb3d4][%mdl 32]} Ng6 11. Nb3 Bb6 {LiveBook: 15 Games} 12. Qe2 (12. Re1 O-O 13. Nbd4 h6 14. Bxg6 fxg6 15. Be3 g5 16. h3 Bxd4 17. Bxd4 {½-½ (29) Shirov,A (2640)-Baklan,V (2604) Baile Govora 2017}) 12... O-O 13. Be3 Bc7 $146 ({Predecessor:} 13... Bxe3 14. Qxe3 b6 15. Nbd4 Na5 16. Bxg6 hxg6 17. b3 Rc8 18. Ng5 Rxc3 19. Qxc3 Qxg5 20. Nf3 Qf5 21. Qc7 Bb5 22. Nd4 Qd3 23. Rfd1 {1-0 (23) Barrer,M (1464)-Kasperski,M (1634) IECC email 2007}) 14. Bg5 Qe8 {[%cal Rg6e5]} 15. Bxg6 fxg6 16. Nbd4 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.26"]
[Round "12"]
[White "Chigaev, Maksim"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2604"]
[BlackElo "2502"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,78,0,0,0,0,0,61,31,38,11,6,15,30,20,33,29,80,38,88,86,79,46,65,50,155,62,50,14,49,50,44,72,70,0,0,0,0,0,-1,-4,-5,-4,-5,-8,-8,-8,-8,-8,-8,-8,-8,-47,-21,-25,-33,-77,-45,-54,-8,-8,0,0,0,0,0,-8,-6]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 d5 6. e5 Ne4 7. Bd3 c5 8. Nf3 {0-0 is the strong threat. E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0} cxd4 9. Nxd4 Qh4 ({Better is} 9... Nd7 $11) (9... Nd7 10. Bf4 Qh4 11. g3 Qh5 12. O-O g5 13. cxd5 Bxc3 14. bxc3 exd5 15. Bxe4 dxe4 {½-½ (30) So,W (2786)-Nakamura,H (2787) Saint Louis 2018}) 10. Nf3 $146 {White is slightly better.} ({Predecessor:} 10. O-O Bxc3 11. bxc3 Nc5 12. Nf3 Qh5 13. Be2 dxc4 14. Ng5 Qg6 15. Qxg6 hxg6 {1-0 (44) Vernay,C (2462)-Vanheirzeele,D (2143) Mulhouse 2011}) 10... Qh5 11. cxd5 exd5 12. O-O Nxc3 13. bxc3 Be7 14. Nd4 Qxe5 (14... Nc6 $11 {remains equal.}) 15. Bxh7+ $16 Kh8 16. Bd3 Nc6 17. Be3 Bd6 {[%csl Gd6][%cal Re5h2]} 18. g3 $1 Bh3 {[#]} (18... Qh5 $14) 19. Rfe1 (19. Rfb1 $1 $16) 19... Qh5 $1 $14 20. Nxc6 Qf3 {[%csl Gh3][%cal Rf3g2]} 21. Bf1 Bxf1 22. Rxf1 bxc6 23. Rad1 ({White should try} 23. c4 $14) 23... f5 $1 $11 24. Rfe1 Rae8 25. Qe2 Qxe2 26. Rxe2 f4 27. gxf4 Bxf4 28. Rde1 Bxe3 29. Rxe3 Rxe3 30. fxe3 {[%mdl 4096] Endgame KR-KR} Re8 31. c4 dxc4 32. e4 Rd8 33. Kf2 Rd2+ 34. Ke3 Rxh2 (34... Rd3+ {feels hotter.} 35. Ke2 Rh3 36. Kd2 g6 37. a4 Kg7) 35. Kd4 Kg8 36. Rc1 {The position is equal.} Rxa2 {White must now prevent ...Ra4.} 37. Rxc4 Ra6 38. Ke5 Kf7 {Threatening ...Ke7.} 39. Kd6 {[#]} c5+ $1 {Precision: White = 55%, Black = 49%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.26"]
[Round "12"]
[White "Esipenko, Andrey"]
[Black "Saduakassova, Dinara"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2584"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,47,23,22,9,19,10,20,19,10,9,15,20,33,37,53,34,36,33,35,-104,76,70,152,177,188,164,160,158,146,150,704,697,5279,811,5481,2802]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 Nd7 $146 (7... O-O 8. Qd2 {½-½ (21) Aronian,L (2765)-Caruana,F (2832) London 2018}) ({Predecessor:} 7... O-O 8. Qd2 {½-½ (32) Leko,P (2690)-Gormally,D (2482) Douglas 2018}) 8. Qd2 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves} O-O 9. O-O-O c6 10. h4 {The position is equal.} (10. Kb1 d5 11. Bd3 Nc5 12. h4 Nxd3 13. Qxd3 Qd6 14. c4 Rd8 15. cxd5 Qxd5 16. Qxd5 cxd5 17. Nd4 Bd7 18. Nb3 Bf5 19. Nd4 Bd7 20. Nb3 Bf5 21. Nd4 {½-½ (21) Aronian,L (2765)-Caruana,F (2832) London 2018}) 10... d5 11. Kb1 Re8 12. Bd3 Nc5 13. Ng5 h6 14. Bh7+ Kf8 15. c4 Na4 ({Predecessor:} 15... b6 16. cxd5 cxd5 {½-½ (32) Leko,P (2690)-Gormally,D (2482) Douglas 2018}) 16. Qd3 (16. cxd5 $14 {keeps the upper hand.} Qxd5 17. Qxd5 cxd5 18. Nf3) 16... Qd6 $2 (16... hxg5 $17 {stays on course.} 17. hxg5 Bc5) 17. Bc1 $16 hxg5 (17... Rd8 $14) 18. hxg5 Bd8 19. cxd5 cxd5 {[#]} 20. Qf3 $1 Be6 {[#]} 21. Bf5 $1 $40 {[%mdl 1152] White has strong compensation. White is out for blood.} Nb6 $2 (21... Rc8 $16) 22. Rde1 $18 {White is clearly winning.} Nd7 {If only Black now had time for ...Nc5....} 23. Rh8+ Ke7 {[#]} 24. Rxe6+ $1 {[%mdl 512] Accuracy: White = 83%, Black = 48%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.26"]
[Round "12"]
[White "Praggnanandhaa R"]
[Black "Gledura, Benjamin"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2539"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,118,18,3,25,17,25,-5,16,-21,-7,-59,-59,-58,-48,-105,-101,-103,-92,-108,-116,-107,-114,-117,-108,-104,-112,-116,-102,-123,-93,-214,-229,-270,-168,-265,-269,-261,-252,-356,-347,-471,-475,-513,-514,-701,-538,-511,-348,-331,-333,-323,-264,-264,-248,-332,-321,-367,-370,-463,-461,-510,-395,-395,-381,-397,-415,-560,-547,-468,-379,-347,-353,-349,-350,-383,-385,-405,-404,-389,-388,-396,-371,-387,-390,-865,-843,-846,-809,-1303,-1248,-29976,-29977,-29979,-29979,-29979,-29980,-29979,-29979,-29981,-29982,-29982,-29983,-29983,-29984,-29987,-29988,-29988,-29989]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 c5 6. d5 b5 {A49: 1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems} (6... d6 7. Nc3 Na6 8. e4 Rb8 9. Qe2 Nc7 10. a4 Bg4 11. h3 Bxf3 12. Bxf3 Nd7 13. Bg2 b6 14. h4 a6 15. h5 b5 16. axb5 axb5 17. hxg6 hxg6 {1-0 (45) Fedorovsky,M (2483)-Fier,A (2624) Wunsiedel 2016}) 7. c4 {LiveBook: 3 Games} a6 8. Re1 d6 {The position is equal.} 9. e4 Bg4 $146 ({Predecessor:} 9... Nbd7 10. h3 Nb6 11. Nbd2 e5 12. dxe6 Bxe6 13. cxb5 axb5 14. a3 {1-0 (26) Kuzmin-Hrbolka,L (2185) Decin 1998}) 10. Nc3 bxc4 11. e5 (11. Qc2 $11) 11... Nfd7 $15 {[%cal Rd7e5]} 12. exd6 exd6 13. Bf4 {[#]} (13. Qc2 $15) 13... Ne5 $1 $17 {[%mdl 512]} 14. Bxe5 (14. Nxe5 Bxd1) 14... Bxe5 15. Re4 Bxf3 16. Bxf3 Nd7 {[%cal Bb8d7,Bd7e5,Be5g4,Bg4e3][%mdl 32]} 17. Rxc4 Bd4 18. Bg2 Rb8 19. Rb1 Ne5 20. Ra4 Qb6 $36 {[%mdl 2048] ...Bxc3 is the strong threat. Black is on the roll.} 21. Ne4 (21. Qd2 $17) 21... f5 $19 ({Less strong is} 21... Bxb2 22. Bf1 $15) 22. Ng5 {and if Ne6 works, White does fine.} c4 23. Nf3 (23. Nh3 $142) 23... Bxf2+ 24. Kh1 Ng4 25. h3 (25. Qc2 $142) 25... Ne3 ({Not} 25... Bxg3 26. hxg4 fxg4 27. Ng1 $15) 26. Qe2 Bxg3 27. Ng5 Be5 28. Ne6 Nxg2 29. Kxg2 Qb5 30. Qxc4 Rfc8 31. Qxb5 axb5 32. Rb4 Kf7 33. Kf3 Kf6 34. Ke3 Rc4 35. Rxc4 bxc4 {[%mdl 4096] Endgame KRB-KRN} 36. b4 cxb3 37. axb3 Rb4 38. Nd8 Rh4 39. Nc6 Rxh3+ 40. Ke2 {White hopes to continue with b4.} Bf4 41. b4 {intending b5.} Be3 42. Na5 f4 43. b5 {[#]} Rh2+ $1 44. Kd3 Rd2+ 45. Kc3 Rxd5 46. Nc4 Bd4+ 47. Kb4 {Now b6 and White clings on.} Ke6 48. Ka5 $2 (48. b6 Kd7 49. Ka4) 48... f3 49. Ka6 g5 {[%cal Bg6g5,Bg5g4,Bg4g3][%mdl 32]} 50. Re1+ {[#]} Re5 $1 51. Nxe5 dxe5 {Black mates.} 52. b6 {[#]} Bxb6 $1 {[%mdl 512]} 53. Kxb6 {KR-KP} g4 54. Rf1 Kd5 55. Kb5 Ke4 56. Kc4 g3 57. Re1+ Kf4 58. Kd3 f2 59. Rf1 Kf3 {Accuracy: White = 25%, Black = 85%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.26"]
[Round "12"]
[White "Paehtz, Elisabeth"]
[Black "Kovalev, Vladislav"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "2477"]
[BlackElo "2687"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,60,0,0,5,4,0,-3,-14,-13,-7,-7,-21,-21,-21,-21,-18,-21,-23,-23,-34,-23,-227,-232,-259,-248,-252,-254,-262,-251,-253,-253,-266,-252,-294,-298,-312,-257,-429,-364,-408,-275,-656,-637]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d6 5. c3 O-O 6. e4 c5 7. dxc5 dxc5 8. Be2 Nc6 9. O-O Qc7 10. Qc2 b6 {LiveBook: 33 Games} 11. Nc4 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} h6 12. Bh4 Nh5 13. Ne3 $146 {The position is equal.} ({Predecessor:} 13. a4 Nf4 14. Bg3 Nxe2+ 15. Qxe2 Qb7 16. Ne3 {0-1 (45) Marangunic,S (2460)-Sale,S (2425) Zagreb 1997}) 13... e6 14. Rad1 Bb7 15. Rd2 g5 16. Bg3 Nxg3 17. hxg3 Rad8 18. Rxd8 Rxd8 19. Nd2 Ne5 {[%cal Bc6e5,Be5g6,Bg6f4][%mdl 32]} 20. f4 $2 {[#]} (20. Rd1 $11 {and White has nothing to worry.}) 20... Ng6 $1 $19 21. e5 {[#]} gxf4 $1 22. gxf4 {[#]} Nxf4 $1 {[%mdl 512]} 23. Ndc4 (23. Rxf4 Qxe5) 23... Bxe5 {aiming for ...b5.} 24. Bf3 Bxf3 25. Rxf3 Bg7 26. Qe4 Ng6 27. Ng4 Rd1+ 28. Kf2 $2 (28. Rf1 {only move.} Rxf1+ 29. Kxf1) 28... Qe7 29. Nge3 Rd8 30. Rh3 $2 (30. a4) 30... b5 {Accuracy: White = 17%, Black = 96%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.26"]
[Round "12"]
[White "Kuipers, Stefan"]
[Black "Bareev, Evgeny"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2470"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,74,29,20,44,16,33,19,37,27,27,23,24,33,18,20,22,14,14,17,24,25,18,20,25,39,31,26,23,0,18,-14,0,0,0,0,18,0,5,5,29,0,7,0,0,0,0,0,0,0,0,-17,-8,-20,-10,-102,-100,-1241,-1250]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. h3 Nc6 6. c3 Qc7 7. Nf3 g6 8. Qc2 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} (8. O-O Bf5 9. Be2 Bg7 10. Nbd2 O-O 11. a3 Rad8 12. Re1 Rfe8 13. Nf1 Ne4 14. Be3 a6 15. a4 e5 16. dxe5 Nxe5 17. Nxe5 Bxe5 {½-½ (36) Giri,A (2783)-Cheparinov,I (2709) St Petersburg 2018}) 8... Bg7 9. O-O O-O 10. Be3 {LiveBook: 3 Games. White has an edge.} Bd7 11. Qc1 $146 ({Predecessor:} 11. Re1 Nh5 12. Qc1 e5 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. Nd2 Nf4 {0-1 (69) Neuschmied,S (2227)-Hawkins,J (2521) Vienna 2013}) 11... Rfe8 12. Bf4 Qc8 13. Re1 Bf5 14. Bf1 Ne4 15. Na3 {[%cal Bb1a3,Ba3c2,Bc2e3][%mdl 32]} Qd8 16. Qd1 a6 17. Bd3 Nd6 18. Bxd6 Qxd6 19. Bxf5 gxf5 20. Nc2 Kh8 21. Ne3 Qd7 22. Nh4 e6 23. Kh1 Qc7 24. Rg1 Qf4 25. Nf3 {[%cal Bh4f3,Bf3e1,Be1d3][%mdl 32]} Qh6 26. Ne1 Qh4 27. Nd3 Rg8 28. Qf1 Bh6 29. Re1 Bf8 {[%cal Bh6f8,Bf8d6,Bd6c5,Bc5e7,Be7h4][%mdl 32]} 30. g3 Qh6 31. f4 Bd6 32. Kh2 Rg6 33. Qf3 Rag8 34. Ne5 Nxe5 35. dxe5 Bc5 36. h4 {[#]} (36. a4 $11 {remains equal.}) 36... Be7 $1 $17 {[%cal Re7h4] aiming for ...Bxh4!} 37. Ref1 $2 {[%mdl 8192] [#]} (37. h5 $17) 37... Bxh4 $1 {[%mdl 512] Accuracy: White = 42%, Black = 68%.} 0-1

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.27"]
[Round "13"]
[White "Kovalev, Vladislav"]
[Black "Kuipers, Stefan"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2687"]
[BlackElo "2470"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,47,12,8,1,14,14,14,10,18,5,18,8,20,12,10,9,9,0,9,9,9,9,8,0,9,17,9,12,45,43,29985,29986,29988,29987]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. Nxd4 Nc6 6. Bb5 Bd7 7. Nxc6 bxc6 8. Bd3 Qc7 9. Qe2 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5} Ne7 10. O-O Ng6 11. Nf3 {The position is equal.} Bd6 12. Re1 (12. c4 dxe4 13. Bxe4 O-O 14. Rd1 Rad8 15. h3 c5 16. b3 Bc6 {0-1 (40) Nepomniachtchi,I (2763)-Vitiugov,N (2719) St Petersburg 2018}) 12... Nf4 13. Bxf4 Bxf4 14. g3 Bd6 $1 15. exd5 cxd5 16. Rac1 {[%cal Ba1c1,Bc1c4,Bc4d4][%mdl 32] [#] Strongly threatening c4.} Rd8 $146 ({Predecessor:} 16... Qb6) 17. c4 dxc4 $1 18. Rxc4 Qb6 19. Ne5 Bxe5 20. Qxe5 O-O $1 21. a3 $40 {[%mdl 128] Black needs to defend precisely.} Rc8 22. Rd4 Bc6 $2 {[%mdl 8192] [#]} (22... Qc7 $14) 23. Bxh7+ $1 {[%mdl 512]} Kxh7 24. Rg4 {Accuracy: White = 97%, Black = 32%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.27"]
[Round "13"]
[White "Bareev, Evgeny"]
[Black "Esipenko, Andrey"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "2650"]
[BlackElo "2584"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,85,0,0,0,-14,0,0,0,10,20,22,19,0,28,-16,0,0,0,0,0,0,0,0,0,0,8,0,7,8,27,-10,29,19,18,14,27,32,45,17,20,15,16,45,17,0,47,35,156,160,281,287,400,383,524,525,504,475,508,134,314,169,178,0,324,314,679,645,591,652,29986,29987,29987,312,29988,29989]} 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. Bf4 c5 7. c3 {LiveBook: 30 Games. D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} (7. dxc5 Nbd7 8. Nc3 Nxc5 9. Qc1 Nfe4 10. Bh6 Nxc3 11. bxc3 Ne4 12. Bxg7 Kxg7 13. c4 dxc4 14. Qf4 Nf6 {0-1 (53) Matuszewski,M (2505)-Kempinski,R (2575) Poland 2018}) 7... Ne4 8. dxc5 Na6 9. Qc1 $146 {The position is equal.} ({Predecessor:} 9. c6 bxc6 10. Nbd2 Qe8 11. Nxe4 dxe4 12. Ne5 g5 13. Bxe4 Nb8 14. Nxc6 Nxc6 15. Bxg5 {0-1 (57) Khan,R (1897)-Goldshtein,S (1936) IECC email 1999}) 9... Naxc5 10. Rd1 Qb6 {Strongly threatening ...Nxf2!} 11. Be3 {And now b4 would win.} Qa6 12. Nbd2 Na4 (12... Qxe2 $2 13. Bf1 $18) 13. Bf1 b5 14. Bd4 Bxd4 15. Nxd4 e5 16. Nxe4 dxe4 17. b3 Nc5 18. Nc2 $1 Be6 19. h4 Qb7 20. h5 Qe7 21. Nb4 a5 (21... gxh5 $6 22. Nc6 $16) 22. Nd5 $1 {[%cal Rd5e7]} Bxd5 $1 23. Rxd5 Rad8 24. Rxd8 Rxd8 25. h6 f5 {[%cal Bf7f5,Bf5f4][%mdl 32]} 26. b4 Ne6 $1 27. bxa5 f4 $1 28. Qe1 Qg5 29. Bh3 Nc5 (29... Nc7 $14) 30. Rd1 $1 $16 Re8 (30... fxg3 $16 31. Rxd8+ Qxd8) 31. Qd2 $18 {Black must now prevent Qd5+.} Qxh6 32. Qd5+ Kh8 33. Qc6 (33. Qxc5 Qxh3 34. Qxb5 Re7 $18) 33... Qf8 {Now ...e3 and Black clings on.} 34. Rd5 Nd3 35. Qd6 $2 (35. Rd6 $18 {is more deadly.} Nxf2 36. Kxf2) 35... Qf7 $2 {[#]} (35... Nc1 $16) 36. Qd7 (36. exd3 fxg3 37. fxg3 Qf3 $14) (36. g4 $142 $1) 36... Qf8 37. Qd6 ({Worse is} 37. Rxb5 fxg3 38. fxg3 Qf2+ 39. Kh1 Qe1+ 40. Kh2 Qxe2+ 41. Bg2 Rf8 $11) (37. exd3 $142 fxg3 38. Qa7 (38. fxg3 e3 $16)) 37... Qf7 $1 {[#] aiming for ...fxg3.} 38. g4 $1 {[%cal Bg3g4,Bg4g5][%mdl 32]} (38. exd3 fxg3 39. fxg3 Qf3 $16) 38... Nc1 $2 (38... f3 39. exd3 e3 40. Rxe5 e2) 39. Rxe5 Nxe2+ 40. Kh2 {Rxe8+ is the strong threat.} e3 41. Rxe8+ Qxe8 42. Qf6+ Kg8 43. g5 {Accuracy: White = 56%, Black = 47%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.27"]
[Round "13"]
[White "L'Ami, Erwin"]
[Black "Paehtz, Elisabeth"]
[Result "1-0"]
[ECO "E00"]
[WhiteElo "2643"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,16,43,50,52,26,47,25,19,24,24,23,28,33,40,46,46,41,46,28,19,32,25,17,29,16,150,136,120,129,131,124,121,115,126,124,118,111,125,116,302,304,286,287,811,811,1190,1169,29996,1296,1295,1295,1120,671,29996,29997]} 1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. e3 (4. Nf3 d5 5. Qc2 Nf6 6. g3 c5 7. Bg2 cxd4 8. cxd5 Nxd5 9. Nxd4 O-O 10. O-O Qb6 11. e3 Bd7 12. Nc3 Nf6 13. a3 Bc5 14. Nf3 Rc8 {0-1 (73) Esipenko,A (2593)-Short,N (2646) Moscow 2018}) 4... b6 5. Qg4 $146 ({Predecessor:} 5. Qf3 c6 6. Nc3 Nf6 7. Bd3 d5 8. Nge2 Ba6 9. b3 O-O 10. O-O Nbd7 11. a3 Be7 {½-½ (55) Zambo,Z (2389)-Berebora,F (2407) Hungary 2012}) 5... Qf6 6. Nc3 {A40: Unusual replies to 1 d4} Bb7 7. Nf3 h5 8. Qg3 {White is slightly better.} (8. Qh3 {keeps more tension.} d6 9. Nb5 Bxf3 10. gxf3 Bxd2+ 11. Kxd2 Na6 12. Qg2) 8... Bd6 9. Qg5 Qxg5 10. Nxg5 f6 11. Nf3 {[%cal Bg5f3,Bf3d4,Bd4b5][%mdl 32]} g5 12. Nb5 $36 {[%mdl 2048] And now c5! would win. White has the initiative.} Na6 13. Nxd6+ cxd6 14. Bc3 Ne7 15. d5 Kf7 16. Nd4 exd5 17. Nb5 Ke6 (17... Bc6 $1 $11) 18. Rd1 Nf5 19. cxd5+ Bxd5 20. Rxd5 Kxd5 21. e4+ Kxe4 {[#]} 22. Bc4 $1 d5 23. f3+ {[%cal Bf2f3,Bf3g4][%mdl 32]} Kf4 24. Bxd5 {Black must now prevent Kf2.} g4 $2 (24... Rac8 $16 {was worth a try.}) 25. O-O $18 {Intending fxg4+ and mate.} Ne3 26. g3+ Kf5 $2 (26... Kg5 27. Bd2 Rae8) 27. fxg4+ Kg6 28. Rxf6+ Kg5 29. Bxa8 (29. Nd6 $142 Kxg4 30. Bf3+ Kh3 31. Ne4 Rh7 32. Ng5#) 29... Rxa8 30. Nd6 {White threatens Ne4+ and mate.} Kxg4 31. Bd2 {Nf7 would kill now.} Nd5 {[#]} 32. Kg2 $1 {[%mdl 512] Precision: White = 83%, Black = 33%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.27"]
[Round "13"]
[White "Gledura, Benjamin"]
[Black "Chigaev, Maksim"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2615"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,63,35,42,44,31,16,24,16,36,20,21,14,22,21,16,25,38,38,18,22,59,60,60,56,63,60,90,57,51,41,128,126,135,131,181,135,201,195,197,197,195,195,195,187,243,263,253,256,323,323,316,261]} 1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. Be2 Nf6 5. Nc3 O-O 6. O-O Nbd7 7. Be3 e5 8. dxe5 {B08: Pirc Defence: Classical System} dxe5 9. Nd2 (9. Bc4 Qe7 10. Qd2 Nb6 11. Bb3 Bg4 12. Ne1 c5 13. f3 Bd7 14. a4 Bc6 15. a5 Nbd7 {1-0 (24) Kramnik,V (2811)-Svidler,P (2747) Zuerich 2017}) 9... Qe7 10. f3 $146 {White has an edge.} ({Predecessor:} 10. Nc4 Rd8 11. Qe1 Nb6 12. f3 Nxc4 13. Bxc4 Be6 14. Bb3 Nd7 15. Bxe6 Qxe6 {0-1 (30) Gloor,R (2357)-Tazbir,M (2530) Ruzomberok 2014}) 10... b6 11. a4 a5 12. Qe1 Nc5 13. Nc4 Bb7 14. Qh4 Rfe8 15. Rfd1 Ne6 16. Nb5 Nd7 17. Qxe7 Rxe7 18. Bf2 Ndc5 19. Ne3 Nd4 20. Bc4 Rd7 21. c3 Nxb5 (21... c6 $1 $14) 22. axb5 $16 Rxd1+ 23. Rxd1 a4 24. Nd5 Bf8 (24... Bxd5 $16 25. Bxd5 (25. Rxd5 Bf8 $14) 25... Rc8 26. Bxc5 bxc5) 25. Nxc7 $18 Rc8 26. Nd5 Bxd5 27. Bxd5 ({Don't do} 27. exd5 $6 a3 $16) 27... Kg7 28. Kf1 Rc7 (28... a3 $142) 29. Ra1 f5 {White has a decisive advantage.} 30. Bxc5 Rxc5 31. Rxa4 fxe4 32. Bxe4 {Accuracy: White = 82%, Black = 53%.} 1-0

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.27"]
[Round "13"]
[White "Van Foreest, Lucas"]
[Black "Korobov, Anton"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2502"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,35,37,35,27,0,0,-33,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5. d4 cxd4 6. Nxd4 Qb6 7. Nxc6 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6} bxc6 8. Be2 (8. Bd3 Ng6 9. c4 Bc5 10. Nc3 Qc7 11. Kh1 e5 12. Na4 Bd4 13. c5 d6 14. Be3 dxc5 15. Nxc5 Bxb2 {0-1 (56) Adams,M (2712)-Adhiban,B (2668) Douglas 2018}) 8... Ng6 9. c4 Be7 10. Nc3 {LiveBook: 5 Games} c5 11. Be3 $146 ({Predecessor:} 11. Rb1 O-O 12. f4 d6 13. Be3 a5 14. Qb3 Qxb3 15. axb3 {½-½ (38) Martin Sanchez,C (2418)-Woltmann,M (2292) ICCF email 2013}) 11... Qxb2 12. Nb5 {[#] Hoping for Nc7+.} O-O 13. f4 {Rb1 is the strong threat.The position is equal.} a6 14. Rb1 Qxa2 15. Ra1 Qb2 16. Rb1 Qa2 17. Ra1 Qb2 18. Rb1 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.27"]
[Round "13"]
[White "Keymer, Vincent"]
[Black "Maghsoodloo, Parham"]
[Result "1/2-1/2"]
[ECO "D71"]
[WhiteElo "2500"]
[BlackElo "2679"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,70,18,0,16,25,16,13,52,41,41,61,41,39,32,32,34,52,78,35,36,32,50,32,56,27,41,45,36,40,42,31,44,40,72,64,58,59,68,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. Nf3 Nb6 7. Nc3 Nc6 8. e3 O-O 9. O-O Re8 10. h3 a5 {D76: Fianchetto Grünfeld: Main Line with 7...Nb6} 11. d5 {[%cal Bd4d5,Bd5c6][%mdl 32]} Bxc3 (11... Ne5 12. Nxe5 Bxe5 13. e4 e6 14. Bh6 exd5 15. exd5 Bd7 16. Re1 a4 17. Rc1 Ra5 18. Qd3 {1-0 (52) Bacrot,E (2720)-Cheparinov,I (2682) Dubai 2014}) 12. dxc6 Qxd1 $146 (12... Bf6 {keeps more tension.} 13. Qc2 bxc6 14. e4 e5 15. Rd1 Bd7) ({Predecessor:} 12... Bf6 13. Qe2 bxc6 14. Rd1 Ba6 15. Qc2 Qc8 16. e4 Nc4 17. Rb1 Rd8 18. Bf4 {½-½ (34) Rohan,A (2411)-Puranik,A (2443) Olongapo City 2015}) 13. Rxd1 Bg7 14. Nd4 Rb8 15. Bd2 {[%cal Bc1d2,Bd2c3,Bc3b4][%mdl 32]} Nc4 16. Bc3 a4 17. Rac1 Nd6 18. Bb4 b6 19. Bf1 Ra8 20. Rc2 Bxd4 21. Rxd4 Be6 22. a3 f6 23. Rcd2 Kf8 24. g4 Red8 25. f4 Ke8 26. e4 Nf7 27. Bc3 Rd6 28. Bb5 (28. Rxd6 $14 Nxd6 29. Rd4) 28... Bb3 $11 {The position is equal.} 29. Bb4 Rxd4 30. Rxd4 Rd8 31. Rxd8+ Kxd8 32. Kf2 e5 33. Ke3 exf4+ 34. Kxf4 Ke8 35. Ke3 Ne5 {Accuracy: White = 75%, Black = 50%.} 1/2-1/2

[Event "81st Tata Steel Challengers 2019"]
[Site "Wijk aan Zee"]
[Date "2019.01.27"]
[Round "13"]
[White "Saduakassova, Dinara"]
[Black "Praggnanandhaa R"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2472"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2019.01.12"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,71,0,0,39,14,28,0,19,0,0,0,0,0,-3,0,0,0,13,-7,0,0,0,0,4,0,0,0,13,4,21,21,23,-52,-46,-60,-64,-74,-68,-67,-66,-128,0,-81,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 d4 5. O-O {[%cal Bh1f1,Bf1e1,Be1e5][%mdl 32]} c5 6. d3 Nc6 7. e3 {A09: Réti Opening: 1 Nf3 d5 2 c4} Bd6 8. exd4 cxd4 9. Na3 {LiveBook: 65 Games} a5 $146 ({Predecessor:} 9... O-O 10. Nc2 e5 11. b4 Re8 12. b5 Nb8 13. Bg5 Nbd7 14. Nd2 Qc7 15. f4 exf4 16. Bxf4 {1-0 (28) Adhiban,B (2682)-Cheparinov,I (2711) Zagreb 2018}) 10. Re1 O-O 11. Nb5 e5 12. c5 Bxc5 13. Nxe5 Nxe5 14. Rxe5 Qb6 15. a4 Bg4 16. Bf3 Bd7 17. Bd2 Rfe8 18. Rxc5 Qxc5 19. Rc1 Qf5 20. Nd6 Qxd3 {aiming for ...Re6.} 21. Nxe8 Bxe8 22. Be1 Qf5 23. Bxb7 Rb8 24. Qf3 (24. Ba6 $11) 24... Qg5 $15 25. Rd1 Qc5 26. b3 Bd7 27. Ba6 Re8 $1 {And now ...Bc6 would win.} 28. Qf4 {[#]} ({White should play} 28. Qd3 $15) 28... Bc6 (28... Ng4 $1 $17 29. h3 Ne5) 29. Bb5 (29. Rc1 $1 $11 {keeps the balance.} Qd5 {[#]} 30. f3 $1 {[%mdl 512]}) 29... Nd5 ({Black should try} 29... Bxb5 $17 30. axb5 Ne4) 30. Qc1 $11 {The position is equal.} Nc3 31. Bxc3 $1 dxc3 32. Rd3 c2 33. Rd2 Bxb5 34. axb5 Qxb5 {Hoping for ...a4.} 35. Qxc2 h5 36. Qd1 {Accuracy: White = 46%, Black = 57%.} 1/2-1/2

