[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Pechac, Jergus"]
[Black "Leskiewicz, Ignacy"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2472"]
[BlackElo "2077"]
[Annotator "TA"]
[PlyCount "143"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,143,34,34,34,35,29,34,36,50,28,45,30,61,54,49,39,39,39,40,10,20,10,18,25,21,0,0,-2,64,16,70,47,84,45,43,41,16,14,9,2,0,0,0,11,55,0,0,0,0,0,0,-37,-39,-35,-14,-20,-20,-14,42,43,33,34,36,42,99,99,100,100,104,0,238,238,238,238,238,174,238,237,254,254,254,231,231,231,231,231,231,231,278,214,877,514,1405,214,214,214,214,214,214,214,214,214,214,214,214,214,214,214,214,214,1323,1090,1131,994,29980,29981,29985,29986,29986,29987,29987,29980,29987,29988,29990,29991,29991,29992,29992,29993,29993,29994,29994,29995]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 c5 6. dxc5 {E71: King's Indian: 4 e4 d6 5 h3} (6. d5 O-O 7. Nf3 e6 8. Bd3 Nbd7 9. O-O e5 10. Re1 Ne8 11. Bg5 f6 12. Bh4 Qe7 13. g4 Bh6 14. Kh1 Bf4 15. Bg3 g5 16. Kg2 Rf7 17. Nd2 h5 18. gxh5 {0-1 (60) Harika,D (2513)-Akopian,V (2648) Doha 2015}) 6... Qa5 {LiveBook: 3 Games. With the idea ...Nxe4.} 7. Bd2 Qxc5 8. Nf3 {White is slightly better.} O-O 9. Be2 Nbd7 10. O-O Qc7 11. Rc1 $146 ({Predecessor:} 11. Qc2 b6 12. Rac1 Bb7 13. b4 e6 14. Bf4 a6 {0-1 (73) Kljuka,S-Burlai,O (2405) Alushta 1999}) 11... Nc5 12. Qc2 $1 a5 13. b3 b6 14. Rfe1 Qb7 {[%cal Rf6e4]} 15. Bf1 Bd7 16. Bg5 Rfe8 17. Rcd1 Ne6 18. Bc1 Bc6 19. Nd5 Nc7 ({Better is} 19... Rac8 $11) 20. Bg5 a4 (20... Ne6 $11) 21. b4 Bxd5 22. exd5 b5 23. Bxf6 Bxf6 24. c5 dxc5 25. bxc5 b4 26. Bc4 {Black must now prevent d6.} Nb5 $1 27. c6 Qb6 28. Bxb5 (28. Ne5 $1 $14 Bxe5 29. Rxe5) 28... Qxb5 $11 29. Qe4 b3 30. axb3 axb3 31. Ne5 b2 32. Rb1 Ra4 33. Qd3 $1 {[%cal Rd3b5]} Qxd3 34. Nxd3 Rd4 (34... Rb8 $11) 35. Nxb2 $14 {Strongly threatening Rec1.} Rxd5 36. Na4 {c7 is the strong threat.} Ra5 $1 {[%cal Ra5a4]} 37. Nb6 $36 {[%mdl 2048] White has good play.} Rc5 (37... Bd4 $1 $14) 38. Rec1 $16 Rxc1+ 39. Rxc1 {[%mdl 4096] Endgame KRB-KRN} Bd4 40. Nd5 (40. c7 $16 Bxb6 41. c8=Q Rxc8 42. Rxc8+ Kg7 43. Kf1) 40... e6 $2 (40... Kf8 $1 $11) 41. c7 $18 exd5 42. c8=Q Rxc8 43. Rxc8+ {KR-KB} Kg7 44. Rd8 Kf6 45. Rxd5 Be5 46. g3 Ke6 47. Rb5 h5 48. h4 Bd4 49. Kg2 Kd6 50. f4 Bc5 $2 (50... Ke7 51. Kf3 Kf6) 51. Kf3 Kd5 (51... Bd4 $142 52. f5 Ke7) 52. Rb7 $2 (52. f5 Kc4 {[#]} 53. Rxc5+ $1 {[%mdl 512]} Kxc5 54. fxg6 fxg6 55. Kf4) 52... Ke6 53. Ke4 Bf2 54. Rb3 Kf6 55. Ra3 Be1 56. Ra6+ Kg7 57. Kf3 Bb4 58. Ra4 Bc5 59. Ra2 Kf6 60. Ke4 Ke6 $2 (60... Bb4 61. Ra6+ Kg7) 61. Ra6+ Ke7 62. f5 {[%cal Bf4f5,Bf5f6][%mdl 32]} Bd6 63. Kd5 {White mates.} Bxg3 64. f6+ Kd7 65. Ra7+ Bc7 66. Kc5 g5 67. hxg5 h4 {[#]} 68. g6 $1 fxg6 69. f7 Ke7 70. Rxc7+ Kf8 71. Kd5 h3 72. Ke6 {Accuracy: White = 63%, Black = 46%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Xiang, Zeyu"]
[Black "Gurack, Daniel"]
[Result "1-0"]
[ECO "E10"]
[WhiteElo "2440"]
[BlackElo "2068"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,91,18,20,60,45,86,61,63,50,87,53,114,92,96,57,91,64,100,52,77,77,111,113,125,116,131,109,102,93,95,93,108,69,247,252,359,291,613,211,222,227,244,164,160,120,240,235,234,239,232,237,235,232,233,217,268,274,360,322,323,300,412,408,534,515,514,497,585,582,575,569,539,534]} 1. d4 e6 2. c4 Nf6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O c6 8. Qc2 Nbd7 9. Rd1 Ne4 10. Bf4 {E11: Bogo-Indian} f5 (10... g5 11. Bc1 f5 12. Nc3 Bf6 13. e3 Rf7 14. b3 b6 15. Bb2 Bb7 16. Rac1 Qe8 17. Ne2 Rc8 {½-½ (53) Caruana,F (2802)-Nakamura,H (2786) chess.com INT 2017}) 11. Nc3 {LiveBook: 4 Games} Ndf6 12. Ne5 {White is slightly better.} Nxc3 13. Qxc3 Ne4 14. Qc2 Bf6 $146 ({Predecessor:} 14... Bg5 15. Bxe4 Bxf4 16. Bxf5 Rxf5 17. gxf4 Rxf4 {1-0 (61) Nielsen,P (2655)-Izsak,G (2443) Germany 2015}) 15. Rac1 Bg5 ({Black should try} 15... g5 $14) 16. Bxg5 Nxg5 17. b4 a6 18. a4 Bd7 19. Rd3 Qe7 20. cxd5 exd5 21. b5 axb5 22. axb5 Rac8 23. Qc5 Qe6 24. Ra1 Ne4 25. Qb6 Nd6 26. Re3 f4 $2 {[#]} (26... cxb5 $14 27. Nxd7 Qxd7) 27. gxf4 $18 Nf5 (27... Nxb5 $142 28. Bh3 Qxh3) 28. Bh3 Ra8 $2 (28... cxb5 29. Qxb7 Bc6) 29. Rf1 $2 (29. Rxa8 Rxa8 30. Bxf5 Qxf5 31. Qxb7 {[%mdl 64] Double Attack}) 29... Qh6 30. Rf3 Be6 31. bxc6 bxc6 32. Nxc6 {Strongly threatening Bxf5.} Rf6 (32... Kh8 $16) 33. Qb7 Raf8 {Black wants to play ...Bc8.} 34. Bxf5 $1 Bxf5 35. Ne7+ {[%mdl 64] [#] Discovered Attack} Kh8 36. Nxf5 ({But not} 36. Qxd5 $6 Bg4 $16) ({Inferior is} 36. Nxd5 Be4 $15) 36... Rxf5 37. e3 Rh5 38. Rg3 Rg8 39. Rg2 Qe6 40. Ra1 g5 41. Ra8 h6 42. Rxg8+ {White is clearly winning.} Kxg8 43. fxg5 hxg5 44. h4 g4 45. Qb8+ Kh7 46. Qg3 {Accuracy: White = 46%, Black = 25%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Neuman, Petr"]
[Black "Kristiansen, Willy M"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2428"]
[BlackElo "2060"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,62,0,0,-28,-25,-45,-39,-47,-50,-108,-112,-108,-58,-97,-76,-68,-45,-61,-54,-77,-33,-22,-16,-17,-47,-41,-18,-20,-25,-21,-8,-98,-104,-150,-29,-38,-22,-31,0,0,0,-29,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bf4 O-O 6. e3 Nbd7 7. Qc2 c5 {[%cal Bc7c5,Bc5c4][%mdl 32]} 8. cxd5 {D37: Queen's Gambit Declined: 5 Bf4} Nxd5 9. Nxd5 exd5 10. Bd3 Qa5+ {LiveBook: 16 Games} 11. Qd2 $146 ({Predecessor:} 11. Qc3 Qb6 12. a3 cxd4 13. Qxd4 Nc5 14. Bc2 Qb5 15. Be5 f6 {1-0 (40) Svidler,P (2749)-Adams,M (2736) Geneva 2017}) 11... Qxd2+ 12. Kxd2 c4 13. Bc2 b5 14. e4 (14. g4 $15) 14... Bb7 $17 15. e5 Rfe8 16. Bg5 Bb4+ 17. Kd1 h6 18. Bd2 Be7 19. Ne1 f6 20. Bg6 fxe5 {[#] White must now prevent ...Rf8.} 21. Bxe8 Rxe8 22. Nc2 Bf6 {[%mdl 1024] Black has compensation.} 23. Re1 Rc8 24. Be3 a5 25. Kd2 (25. dxe5 $11 {remains equal.} Nxe5 26. Bd4) 25... b4 26. Rac1 exd4 (26... Ba6 $17 {Hoping for ...c3+.} 27. Kd1 Bb5 28. dxe5 Nxe5) 27. Bxd4 $11 Bg5+ 28. Be3 $1 {[%cal Re3g5]} Bf6 29. Bd4 $1 Bg5+ 30. Be3 $1 {[%cal Re3g5]} Bf6 31. Bd4 $1 Bg5+ {Accuracy: White = 46%, Black = 55%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Liu, Guanchu"]
[Black "Shintre Neel"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "2425"]
[BlackElo "2053"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,86,9,0,16,21,30,22,35,11,25,0,293,275,276,166,160,170,169,156,160,176,202,52,187,183,179,178,171,179,187,176,182,187,183,183,200,179,347,345,345,302,304,265,258,277,298,288,500,422,418,393,575,559,539,552,542,450,639,647,6523,6511,29987,29988,29992,29993,29993,29994,29994,29995,29997,29997,29998,29999,29999]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 exd4 5. e5 Nd5 6. Qb3 Nb6 7. cxd4 d6 {C44: Ponziani Opening and Scotch Gambit} (7... d5 8. Bb5 Bd7 9. O-O a6 10. Bg5 Be7 11. Bxc6 Bxc6 12. Bxe7 Qxe7 13. Nbd2 O-O 14. Qc2 a5 15. a4 Nd7 {½-½ (40) Liu,G (2445)-Xu,J (2493) Hangzhou 2018}) 8. Bb5 $1 {LiveBook: 7 Games} Bd7 9. O-O dxe5 {The position is equal.} 10. dxe5 Be7 11. Rd1 Qc8 12. Bg5 $146 {[%mdl 128] Strongly threatening Bxe7. White has some attack.} ({Predecessor:} 12. Nc3 O-O 13. Be3 Be6 14. Qc2 Nb4 15. Qc1 {1-0 (58) Perlitz,S (2085)-Sanati,C (1607) Frankfurt 2012}) 12... Na5 $2 {[%mdl 8192]} (12... a6 $11 {and Black has nothing to worry.} 13. Bxe7 axb5) 13. Bxd7+ $18 Nxd7 14. Qa4 Nc6 15. Bxe7 Nb6 16. Qa3 Nxe7 {[#]} 17. Nc3 $1 Nc6 {[#]} 18. Ne4 ({White should play} 18. Rac1 $1 $18) 18... Qe6 ({Better is} 18... Qf5 $1 $14 19. Ng3 Qg4) 19. Nc5 Qe7 20. Qc3 Nd8 21. Nxb7 $1 O-O 22. Nc5 Rb8 23. b3 Ne6 24. Rac1 Nf4 {...Ne2+ is the strong threat.} 25. Qd2 Nfd5 $2 (25... Rbd8 26. Qxf4 Rxd1+ 27. Rxd1 Qxc5) 26. Nd4 {[%cal Bf3d4,Bd4c6,Bc6e7][%mdl 32]} Qh4 27. Nc6 Rbe8 28. Nd7 Nxd7 29. Qxd5 Nb6 30. Qc5 f6 $2 (30... Qg4 31. h3 Qe6) 31. Ne7+ Kh8 32. e6 Qg5 (32... Nc8 $142 33. Nxc8 Rxc8) 33. Qxg5 fxg5 34. Rxc7 Rf6 35. Re1 Rd8 (35... a5 $142 36. f3 h6) 36. f3 Rd2 {[#]} 37. Ng6+ $1 {[%mdl 512]} hxg6 (37... Rxg6 38. e7) 38. e7 {White mates.} Re6 39. Rxe6 Rd1+ 40. Kf2 Rd2+ 41. Ke1 Rd8 42. exd8=Q+ Kh7 43. Re8 {[%csl Gd8][%cal Re8h8]} Nc8 44. Rh8# {Precision: White = 70%, Black = 34%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Naumkin, Igor"]
[Black "Chyzy, Jakub"]
[Result "1-0"]
[ECO "D52"]
[WhiteElo "2418"]
[BlackElo "2045"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,47,18,18,42,37,15,12,19,14,29,31,12,20,41,0,5,-24,0,0,251,276,489,497,677,660]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nbd7 5. Bg5 c6 6. e3 Qa5 7. cxd5 Nxd5 8. Qd2 N7b6 9. Bd3 {[%cal Bf1d3,Bd3c2,Bc2b3][%mdl 32]} Nxc3 10. bxc3 Na4 11. O-O {D52: Queen's Gambit Declined: Cambridge Springs Variation} Qxc3 12. Qe2 Qb2 13. Bc2 {LiveBook: 19 Games. The position is equal.} Nc3 (13... Qb5 14. Bd3 {½-½ (16) Woellermann,J (2384)-Jirovsky,M (2443) Germany 2018}) 14. Qd3 {[%mdl 1024] White has compensation.} Nd5 15. Bb3 h6 16. Bh4 Qc3 17. Qe2 Bd6 $146 ({Predecessor:} 17... Ba3 18. Ne5 a5 {1-0 (39) Williams,A-Vaughan,D England 1980}) 18. Nd2 {Threatens to win with Ne4.} Qb4 19. Rac1 O-O 20. Ne4 {And now Rc4 would win.} Bb8 21. f4 a5 $2 {[%mdl 8192] [#]} (21... Qb5 $11 {and Black has nothing to worry.} 22. Qxb5 cxb5) 22. Rb1 $1 $18 Nc3 $2 (22... Qa3) 23. Nxc3 Qxc3 24. Be1 {[%mdl 64] Trapped Piece. Accuracy: White = 78%, Black = 35%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Kacharava, Nikolozi"]
[Black "Koridze, Lile"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "2397"]
[BlackElo "2034"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,53,45,31,81,82,93,81,81,56,144,130,182,189,238,176,179,181,306,311,381,382,418,427,413,385,434,441,441,383,613,631,644,636,647,638,592,572]} 1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. d4 cxd4 5. cxd4 d5 6. e5 Nh6 7. Nc3 Nc6 8. Bb5 O-O 9. h3 f6 10. O-O {LiveBook: 25 Games} Be6 {[%cal Rf6e5] B22: Sicilian: 2 c3} (10... Nf7 11. exf6 exf6 12. Re1 g5 13. b3 Qa5 14. Bd2 g4 15. hxg4 Bxg4 16. Be2 Rad8 17. Nh4 Bxe2 18. Nxe2 Qc7 19. Nf4 Ng5 20. Nf5 Qd7 21. Qg4 Nxd4 22. Ne7+ Kh8 23. Qh5 {1-0 (23) Stefansson,H (2530)-Manik,M (2407) Pardubice 2017}) 11. Re1 Qc8 $146 ({Predecessor:} 11... fxe5 12. Bxc6 bxc6 13. Nxe5 Qd6 14. Na4 Nf7 15. Bf4 Nxe5 16. Bxe5 Bxe5 17. Rxe5 Rf5 18. Qe1 Rxe5 19. dxe5 {1-0 (36) Cabrilo,G (2419)-Svicevic,R (2300) Belgrade 2014}) 12. Bf4 fxe5 {White is better.} 13. Bxc6 Qxc6 ({Black should play} 13... bxc6 $14 14. Bxh6 (14. Bxe5 Bxh3 15. gxh3 Qxh3 $11) 14... Bxh6) 14. Bxe5 $16 Rae8 (14... Bxe5 $16 15. Rxe5 (15. Nxe5 Qd6 $16) 15... Rf6) 15. Qe2 $18 {[#] Bxg7 is the strong threat.} Bf7 16. Bxg7 Kxg7 17. Ne5 Qd6 (17... Qe6 $142 18. Nb5 Rb8 19. Nxa7 Be8) 18. Nb5 $1 {[%csl LRa7,LRd6]} Qd8 19. Rac1 Nf5 20. Nxf7 Rxf7 21. Nc7 Kg8 22. Nxe8 Qxe8 23. Qe5 Qd8 $2 {[#]} (23... e6 24. Qxd5 exd5 25. Rxe8+ Kg7) 24. Rc7 {White is clearly winning.} Nxd4 {and the idea ...Nc6 leaves Black hopeful.} 25. Rxe7 Rxe7 26. Qxe7 Qxe7 27. Rxe7 {Accuracy: White = 90%, Black = 19%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Krivonosov, Oleg"]
[Black "Molkanov, Oleg"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2390"]
[BlackElo "2034"]
[Annotator "TA"]
[PlyCount "157"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,157,58,24,29,37,29,41,37,43,47,43,36,38,37,39,36,45,69,63,74,75,74,80,75,93,106,81,88,89,109,111,125,108,125,62,79,59,116,115,113,44,40,39,48,10,16,12,72,65,74,50,42,41,71,41,37,39,79,79,79,79,79,79,79,79,79,79,79,79,86,72,72,72,72,72,72,72,72,72,72,72,72,72,72,52,65,48,58,37,65,37,72,43,72,65,72,72,72,52,150,149,150,150,179,171,172,164,204,199,204,185,203,179,181,91,98,97,202,92,102,89,94,75,93,85,87,84,144,143,133,113,117,106,81,85,156,156,149,127,513,485,430,337]} 1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 5. Bb2 d6 6. d4 O-O 7. O-O c6 8. c4 Qe8 9. d5 {LiveBook: 27 Games} cxd5 {A87: Dutch Defence: Leningrad System: 5 Nf3} (9... Na6 10. Nc3 Bd7 11. Qd2 Nc5 12. Nd4 Rc8 13. Rad1 Qf7 14. Qc1 Nce4 15. Nxe4 fxe4 16. dxc6 bxc6 17. Nc2 d5 18. f3 exf3 19. exf3 dxc4 20. bxc4 {1-0 (41) Santarius,E (2317)-Wallace,J (2399) Fagernes 2018}) 10. cxd5 Na6 11. Nc3 Bd7 {White is slightly better.} 12. Nd4 Nc7 $146 ({Predecessor:} 12... Rc8 13. Qd2 Nc5 14. Rac1 a5 15. e3 b6 16. f3 Bh6 17. Qe2 {0-1 (43) Yothinnorratham,T (1936)-Saeheng,B (2280) Bangkok 2016}) 13. Qd2 h6 14. Rac1 Rc8 15. e3 Qf7 16. Rfd1 Kh8 17. Ne6 Nxe6 18. dxe6 Bxe6 19. Bxb7 Rc7 20. Bg2 Rc5 21. Ne2 Ne4 22. Bxg7+ Kxg7 23. Qd4+ Kg8 24. Rxc5 dxc5 25. Qe5 ({White should try} 25. Qa4 $1 $16) 25... g5 26. Nc3 Nxc3 (26... Qf6 $14 27. Qxf6 Nxf6) 27. Qxc3 $16 Rc8 28. Qe5 (28. Qa5 $16) 28... Qf6 $14 29. Qxf6 exf6 {[%mdl 4096] Endgame KRB-KRB} 30. Rd6 Kf7 31. Ra6 Rc7 (31... c4 $1 $11 {remains equal.} 32. Rxa7+ Kg6 33. bxc4 Rxc4) 32. Bf1 $16 Bc8 33. Bc4+ Ke7 34. Ra5 Kd6 35. Kf1 Kc6 36. Bd3 Kb6 37. Rb5+ Kc6 {White must now prevent ...Ba6.} 38. Rb8 Kd5 39. Ke1 Ke5 40. f4+ Kd5 41. Kd2 Kc6 42. Kc3 Kd5 43. h4 Kd6 44. Bf1 Ke6 45. Be2 Kd6 46. Bb5 Ke7 47. Kc2 Kd6 48. Be2 Kd7 49. Bf3 Ke7 50. a3 Ke6 51. Kd2 Rd7+ 52. Ke1 Rc7 53. Be2 Kd5 54. Kf2 Ke6 55. Bd3 Kd5 56. Ke2 Kd6 57. Rb5 Kc6 (57... Ke7 $14) 58. b4 Kd6 59. Ra5 $1 Kd5 60. bxc5 Kc6 61. Bc2 gxh4 62. gxh4 Rg7 63. Kf2 a6 64. Ba4+ Kc7 65. c6 (65. Bd1 $18) 65... Rg4 66. Bd1 $1 {[%cal Rd1g4]} Rxh4 {[#]} (66... Rg8 $16 {was necessary.}) 67. Bf3 (67. Kg2 $1 $18 {and the rest is easy.}) 67... Rh2+ {[#]} 68. Bg2 $1 {Hoping for Kg3.} Rh4 69. Rc5 Kd6 70. Rc1 Rg4 71. c7 Rg8 (71... Rg6 $142) 72. Rc6+ Ke7 73. Rb6 Rf8 74. Bb7 Bxb7 75. Rxb7 Kd7 (75... Rc8 $142) 76. Ra7 Rc8 77. Rxa6 Kxc7 $2 {[%mdl 8192]} (77... Rxc7 $16 {is tougher.} 78. Rxf6 {[%mdl 64] Double Attack} Rc5) 78. Rxf6 $18 Ra8 79. Rxf5 {Accuracy: White = 55%, Black = 43%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Low, Zhen Yu Cyrus"]
[Black "Koubova, Anna Marie"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2385"]
[BlackElo "2021"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,77,16,49,40,66,59,66,71,90,62,58,43,64,26,22,0,0,-24,71,12,74,0,0,1,69,41,102,28,62,25,75,79,212,209,228,218,295,302,354,193,191,170,391,380,388,333,344,351,472,220,687,604,621,599,618,582,575,571,955,948,899,902,866,826,937,933]} 1. e4 c5 2. Ne2 d6 3. g3 Nf6 4. Bg2 g6 5. c3 Bg7 6. d4 O-O 7. O-O Nc6 {LiveBook: 29 Games} 8. d5 {B06: Modern Defence} (8. h3 e5 9. Be3 cxd4 10. cxd4 exd4 11. Nxd4 Ne5 12. Nc3 Nc4 13. Bc1 Qb6 14. b3 Nxe4 15. Nxe4 Qxd4 16. Qxd4 Bxd4 17. Rb1 d5 18. Rd1 dxe4 19. Rxd4 Ne5 20. Bh6 Re8 21. Bxe4 Bf5 22. Kh1 Rad8 23. Ra4 b5 {0-1 (23) Karjakin,S (2723)-Carlsen,M (2801) Moscow 2009}) 8... Nb8 9. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} e5 $146 ({Predecessor:} 9... Na6 10. Na3 Bd7 11. Bf4 Qe8 12. Nc4 Nh5 13. Be3 Qc8 14. f3 f5 15. exf5 gxf5 {1-0 (41) Naiditsch,A (2684)-Belezky,A (2397) Germany 2016}) 10. Na3 {White is slightly better.} Nbd7 11. b4 Ne8 12. Be3 b6 13. a5 f5 14. Qd2 Ndf6 15. f3 Nh5 (15... fxe4 $11 {remains equal.} 16. fxe4 cxb4 17. cxb4 bxa5) 16. Rab1 (16. axb6 $16 {And now Nc4 would win.} f4 17. b7 (17. gxf4 exf4 18. Nxf4 Nxf4 $11) 17... Bxb7 18. Bf2) 16... Ba6 (16... fxe4 $11 17. fxe4 Rxf1+ 18. Rxf1 cxb4 19. cxb4 bxa5) 17. bxc5 (17. exf5 $16 {aiming for b5.} gxf5 18. Bg5) 17... bxc5 $11 18. c4 Nef6 (18... fxe4 $11 19. fxe4 Rxf1+ 20. Bxf1 Nhf6) 19. Bg5 Qd7 ({Black should try} 19... fxe4 $14 20. fxe4 Rb8) 20. Nb5 (20. Bh3 $16) 20... Rab8 21. Nec3 Ne8 22. Bh3 Nc7 (22... Bc8 $16) 23. Nxa7 $18 Bxc4 24. Nc6 Ra8 25. Rfc1 Nf6 26. Na4 (26. Bxf6 $142 Bxf6 27. Na4) 26... Bxd5 27. Bxf6 Bxc6 $2 (27... Qxc6 28. Bxg7 (28. exd5 Qxa4 29. Be7 Nb5 $11) 28... Kxg7) 28. Nb6 $1 {[%csl LRa8,LRd7][%mdl 64] [#] Double Attack} Qe6 29. Bxg7 ({Less strong is} 29. Nxa8 Nxa8 30. Bxg7 Kxg7 $18) 29... Kxg7 30. Nxa8 Rxa8 31. exf5 (31. Rb6 $142 Ra6 32. Bf1 Rxb6 33. axb6) 31... gxf5 $2 (31... Qd5 32. Qxd5 Nxd5) 32. Qg5+ {White is clearly winning.} Kh8 33. Bxf5 Qf7 {Strongly threatening ...Ne6.} 34. Rb6 Rg8 35. Qh6 Bxf3 {[#]} 36. Bxh7 $1 {[%mdl 576] Deflection} Qxh7 37. Qf6+ {[%mdl 64] Double Attack} Qg7 38. Qxf3 Rf8 39. Qh5+ {Accuracy: White = 48%, Black = 17%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Gschnitzer, Oswald"]
[Black "Sedlacek, Tomas"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2370"]
[BlackElo "2016"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,105,21,21,21,21,18,36,36,40,33,64,27,35,31,33,0,37,47,49,33,33,27,33,33,28,17,21,17,28,26,25,18,21,16,52,50,56,27,153,157,160,158,153,136,250,252,233,233,229,245,302,273,323,311,312,302,300,141,186,0,273,0,141,141,141,141,212,198,426,441,447,447,447,432,415,353,363,374,620,618,603,575,1126,1082,1122,1066,1047,1064,1050,899,800,658]} 1. Nf3 Nc6 2. d4 d5 3. Bf4 {[%cal Bc1f4,Bf4g3,Bg3h4][%mdl 32]} Bg4 4. e3 e6 5. c4 Bd6 6. Bg3 Nf6 7. Nc3 O-O {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} 8. Bh4 (8. a3 Ne7 9. Qb3 b6 10. Ne5 c5 11. Nxg4 Nxg4 12. Rd1 Bxg3 13. hxg3 Nf6 14. cxd5 exd5 15. Be2 {½-½ (86) Kramnik,V (2791)-Carlsen,M (2802) London 2010}) 8... Be7 {LiveBook: 3 Games} 9. Be2 dxc4 {The position is equal.} 10. Bxc4 Bxf3 $146 ({Predecessor:} 10... Nd5 11. Bg3 Bd6 12. O-O Bxg3 13. hxg3 Nce7 14. Rc1 Rc8 15. Ne4 {1-0 (50) Ruck,R (2579)-Zakrzewski,M (2099) Warsaw 2011}) 11. Qxf3 e5 12. d5 e4 13. Nxe4 Ne5 {[%mdl 64] Double Attack} 14. Nxf6+ Bxf6 15. Qe4 Bxh4 ({But not} 15... Nxc4 16. Bxf6 Qxf6 17. Qxc4 $14) (15... Qe7 $5 {[%cal Re7b4]} 16. d6 Qxd6 $11) 16. Qxe5 Bf6 17. Qe4 Bxb2 18. Rb1 Bc3+ 19. Ke2 b6 20. h4 $40 {[%mdl 128] White mounts an attack.} f5 21. Qd3 Qf6 22. d6+ Kh8 23. dxc7 {aiming for Rhc1.} Be5 24. Rbc1 {Ba6 is the strong threat.} Bxc7 25. Bd5 $1 {[%cal Rd5a8]} Rac8 26. Rc6 Qb2+ (26... Bd6 $1 $11) 27. Rc2 $16 Qe5 28. f4 Qd6 29. Rhc1 Rcd8 (29... a6 $16 {keeps fighting.} 30. Rc6 Qd7) 30. Rxc7 $18 Qxd5 31. Qxd5 Rxd5 32. Rxa7 {[%mdl 4096] Endgame KRR-KRR} Rd6 33. Rcc7 Rg6 34. Kf3 h5 35. Rf7 Kg8 36. Rfb7 (36. Rxf8+ $1 $18 {and the rest is easy.} Kxf8 37. Ra8+ Kf7 38. Rh8) 36... Re8 37. Rf7 (37. a4 $142) 37... Rf8 38. Rfb7 ({White must play} 38. Rxf8+ $1 $18 Kxf8 39. Ra8+ Kf7 40. Rh8) 38... Re8 $16 39. Rd7 Rf8 40. Re7 Kh8 (40... Rc8 $16 {might work better.} 41. a4 Rc1 42. Re8+ Kh7) 41. a4 $18 Kh7 $2 (41... Kg8 42. Ra6 Kh7) 42. Rf7 Kg8 43. Rxf8+ $1 Kxf8 {[#] KR-KR} 44. Ra8+ $1 Kf7 {[#]} 45. Rh8 $1 Rc6 46. Rxh5 Kg6 $2 (46... Rc5 47. g4 fxg4+ 48. Kxg4 Rc4) 47. Rg5+ {White is clearly winning.} Kf6 48. h5 {[%cal Bh4h5,Bh5h6][%mdl 32] Rg6+ would kill now.} Rc4 49. Rg6+ Kf7 50. Rxb6 Rxa4 51. g4 fxg4+ 52. Kxg4 Ra1 53. h6 {Accuracy: White = 67%, Black = 44%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Lin, Yi"]
[Black "Gokhale, Anupama"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2359"]
[BlackElo "2009"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,83,19,16,15,17,50,52,84,90,94,75,70,68,58,68,85,44,47,45,45,52,58,45,45,45,65,44,58,27,46,45,51,55,83,0,250,247,244,258,245,256,250,241,216,225,263,265,365,387,556,556,545,546,545,521,565,518,707,659,647,565,532,518,421,256,1383,1377,1519,1268,29959,29979,29977,29978,29964,6621]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 c5 5. g3 Qb6 6. Bg2 {LiveBook: 33 Games} Bxd2+ {E11: Bogo-Indian} (6... Nc6 7. Nc3 Nxd4 8. Nxd4 cxd4 9. Nb5 Bc5 10. b4 Be7 11. a4 d5 12. c5 Qd8 13. Bf4 O-O 14. Qxd4 {1-0 (36) Pelletier,Y (2592)-Gharamian,T (2658) Cap d'Agde 2010}) 7. Qxd2 Ne4 8. dxc5 $146 ({Predecessor:} 8. Qc2 Qa5+ 9. Nbd2 Nxd2 10. Qxd2 {½-½ (10) Serarols Mabras,B (2184)-Panelo Munoz,M (2398) Lorca 2015}) 8... Qxc5 {White is slightly better.} 9. Qd4 {[%mdl 64] [#] Double Attack} f5 10. Qxc5 Nxc5 11. Nc3 Nc6 12. O-O Ke7 13. Rfd1 Rb8 14. Nd4 Nxd4 15. Rxd4 a5 16. Rad1 b6 17. e4 $36 {[%mdl 2048] Black is under pressure.} g6 18. e5 Rd8 19. Rd6 Bb7 20. b3 Bxg2 21. Kxg2 Rdc8 22. Na4 (22. h3 $16) 22... Nxa4 $2 (22... Rb7 $11 {and Black is okay.}) 23. Rxd7+ $18 ({Stronger than} 23. bxa4 Rb7 $11) 23... Ke8 24. bxa4 Rd8 25. Rxh7 Rxd1 {[%mdl 4096] Endgame} 26. Rh8+ Kd7 27. Rxb8 {KR-KR} Rc1 28. Rb7+ ({Don't take} 28. Rxb6 $6 Rxc4 29. f4 Rxa4 $16) 28... Kc6 29. Re7 Rxc4 (29... g5 {was called for.} 30. Rxe6+ Kc5) 30. Rxe6+ {[%mdl 64] [#] Double Attack} Kd5 31. Rxg6 Rxa4 32. Rxb6 Rxa2 33. e6 Re2 {If only Black now had time for ...Kc5....} 34. Ra6 a4 35. Rxa4 Kxe6 36. h4 {[%cal Bh2h4,Bh4h5,Bh5h6,Bh6h7][%mdl 32]} Rb2 37. Ra6+ Ke5 $2 (37... Kf7 38. h5 Kg7 39. Rg6+ Kf7) 38. h5 Rc2 39. h6 Rb2 40. h7 {White mates.} Rb8 41. Rh6 Rh8 42. Kf3 {Accuracy: White = 71%, Black = 55%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Kalinowska, Zuzanna"]
[Black "Postny, Evgeny"]
[Result "0-1"]
[ECO "D20"]
[WhiteElo "2080"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,48,22,34,0,22,0,0,-6,-12,-14,-10,-20,-11,-30,0,0,0,0,0,-9,-14,-36,-22,-60,-62,-82,-83,-419,-393,-409,-413]} 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 a6 6. O-O b5 7. Be2 Bb7 {D26: Queen's Gambit Accepted: 4 e3 e6 5 Bxc5 c5 sidelines} 8. a4 (8. b3 Nbd7 9. Bb2 c5 10. a4 b4 11. Nbd2 Be7 12. Rc1 Rc8 13. Nc4 O-O 14. Nfe5 cxd4 15. Qxd4 Nc5 16. Qxd8 Rfxd8 17. Na5 Bd5 18. Nec4 Nfd7 19. Nd2 Bf6 {½-½ (32) Rodshtein,M (2678)-Adhiban,B (2671) Linares 2018}) 8... b4 9. Nbd2 c5 10. Nc4 Nc6 {LiveBook: 4 Games} 11. Re1 cxd4 $146 ({Predecessor:} 11... a5 12. b3 cxd4 13. exd4 Be7 14. Bb2 O-O 15. Nfe5 Rc8 {0-1 (28) Berberich,C (2045)-Philipowski,R Bonn 1998}) 12. exd4 Be7 13. h3 O-O 14. Bf4 Na5 15. Nfe5 Nxc4 16. Bxc4 Rc8 17. Qd3 a5 18. Rad1 Nd5 19. Bh2 Nb6 20. Bb3 Bd5 21. Bc2 {[%csl Gc2][%cal Rd3h7]} g6 $36 {[%mdl 2048] Black fights for an advantage.} 22. Bf4 Bg5 23. Bc1 $2 {[%mdl 8192] [#]} (23. Bg3 $17 {is a better chance.}) 23... Bxc1 $1 $19 24. Rxc1 {[#]} b3 $1 {[%mdl 512] Accuracy: White = 28%, Black = 79%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Ng, Jen Sheng"]
[Black "Wang, Yiye"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2075"]
[BlackElo "2443"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,61,39,77,33,108,97,101,3,41,41,41,16,37,32,288,277,282,277,283,278,284,293,258,185,260,167,217,126,274,265,690,686,685,683,981,960,822,369,29986,29987,29992,29993]} 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 a6 5. Nf3 b5 6. Bd3 Bb7 7. a4 {B06: Modern Defence} b4 8. Ne2 Nd7 9. O-O c5 10. c3 cxd4 (10... Ngf6 11. e5 Nd5 12. Bd2 bxc3 13. bxc3 cxd4 14. cxd4 O-O {0-1 (49) Anand,V (2759)-Nakamura,H (2769) Leuven 2018}) 11. cxd4 Ngf6 {LiveBook: 4 Games} 12. Ng3 a5 (12... O-O $14) 13. e5 $16 Nd5 {[#]} 14. e6 $146 ({Better is} 14. Ng5 $1 $16) ({Predecessor:} 14. Qe1 dxe5 15. fxe5 e6 {0-1 (33) Kosmo,S (2221)-Ristoja,J (2255) Finland 2015}) 14... fxe6 $11 15. Ng5 $1 {[%cal Rg5e6]} Nc7 $1 {[#]} 16. Nxh7 $1 {[%cal Rd3g6][%mdl 512]} Bxd4+ (16... Rxh7 17. Bxg6+) 17. Kh1 {[%cal Rd3g6]} Nf8 $2 {[%mdl 8192]} (17... Nf6 $14) 18. Nxf8 $18 Kxf8 {[#]} 19. Be4 $1 {[%mdl 64] Discovered Attack} Bxe4 20. Qxd4 {[%mdl 64] Double Attack} Bxg2+ 21. Kxg2 Rh4 22. b3 Nd5 (22... Ke8 $142 23. Bb2 Kd7) 23. Bb2 {And now Rae1 would win.} Rc8 {Black wants to play ...Rc2+.} 24. Rf2 (24. Rae1 $18 Rc2+ 25. Re2 Rxe2+ 26. Nxe2) 24... Nf6 (24... Ke8 $16 {is a better defense.}) 25. Ne4 Ng4 $2 (25... Nxe4 26. Qxe4 {[%mdl 64] Double Attack} Qb6) 26. Ng5 Ke8 27. Kg3 Nxf2 28. Kxh4 Rc2 29. Rc1 (29. Nxe6 $142 {White threatens Qh8+ and mate.} Qc8 30. Re1) 29... Re2 $2 (29... Qc8 $18 30. Qg7 Rxc1) 30. Qc4 Rxb2 31. Qb5+ {Accuracy: White = 55%, Black = 18%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Patil, Mitali Madhukar"]
[Black "Frolov, Artur"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2062"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,124,20,50,46,41,0,0,0,0,0,0,0,0,-45,-35,-53,-9,-12,-6,-7,0,0,0,0,-6,-7,-9,-26,-24,-26,-27,-26,-27,-29,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-71,-71,-71,-67,-67,-67,-731,-715,-747,-1189,-734,-559,-1259,-629,-1119,-739,-1294,-1508,-1508,-1448,-1379,-1379,-1331,-1193,-1180,-1216,-1216,-759,-754,-739,-29968,-29968,-29966,-29965,-29969,-29965,-5081,0,-29972,-29973,-29972,-29974,-29985,-29986,-29986,-29987,-29987,-29988,-29988,-29989]} 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Nf6 6. Be2 cxd4 7. cxd4 e6 8. O-O Be7 9. Nc3 Qd8 10. a3 O-O 11. Be3 b6 {LiveBook: 3 Games. B22: Sicilian: 2 c3} (11... Nd5 12. Bd3 Nxc3 13. bxc3 b6 14. Qc2 g6 15. h4 Bf6 16. h5 Bb7 17. hxg6 hxg6 18. Bxg6 fxg6 19. Qxg6+ {0-1 (39) Hovhannisyan,M (2495)-Saraci,N (2215) Reykjavik 2015}) 12. Ne5 Bb7 13. Qa4 $146 ({Predecessor:} 13. Bf3 Rc8 14. Qa4 Nd5 15. Nxd5 exd5 16. Rac1 Nxe5 17. dxe5 Rxc1 18. Rxc1 a6 19. Rd1 {1-0 (35) Vu,P (2051)-Tu,H (2244) Ho Chi Minh City 2015}) 13... Nxe5 {The position is equal.} 14. dxe5 Nd5 15. Nxd5 Bxd5 16. Rfd1 Qb8 17. Qd7 Bc5 {Strongly threatening ...Bxe3.} 18. Bf4 Rd8 19. Qa4 a6 20. Rac1 Qb7 21. Bg5 Rdc8 22. Qg4 Bf8 23. Be3 b5 24. Bd3 g6 25. h4 Bg7 26. Bd4 h5 27. Qg5 Be4 28. Bc3 Bxd3 29. Rxd3 Rc4 30. g3 a5 31. Rcd1 b4 32. Rd7 Qf3 33. R1d3 Qf5 34. Rd8+ Rxd8 35. Rxd8+ Kh7 36. Qxf5 gxf5 37. axb4 axb4 {[%cal Ba5b4,Bb4b3][%mdl 32]} 38. Rd4 (38. Bd4 $1 $11 {remains equal.}) 38... Rxd4 $1 $17 ({Much weaker is} 38... bxc3 39. Rxc4 cxb2 40. Rb4 $11) 39. Bxd4 {[%mdl 4096] Endgame [#] KB-KB} f4 $1 40. gxf4 Kg6 41. Kg2 $2 {[%mdl 8192] [#]} (41. b3 $15) 41... b3 $1 $19 42. f3 Kf5 43. Kg3 Bf8 44. Be3 Ba3 45. Bc1 Bb4 46. Kf2 Be7 47. Kg3 f6 48. exf6 Bxf6 49. Kh3 Bg7 50. Kg2 Bh6 51. Kg3 e5 52. Bd2 exf4+ 53. Kg2 Bg7 54. Bc1 Bd4 55. Kh2 Bf2 56. Bd2 Bd4 (56... Bxh4 $19 57. Bb4 Bf6) 57. Bc1 Be3 {Black mates.} 58. Bxe3 fxe3 {[%cal Bf4e3,Be3e2][%mdl 32]} 59. Kg3 Ke5 60. f4+ Ke4 61. f5 Kd3 62. f6 e2 {Accuracy: White = 60%, Black = 73%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Mastroddi, Emiliano"]
[Black "Plischki, Sebastian"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2058"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,72,-22,-22,-36,-54,-36,-45,-212,-219,-206,-226,-208,-200,-254,-153,-218,-214,-212,-199,-217,-196,-248,-248,-328,-285,-354,-233,-224,-236,-236,-229,-254,-226,-240,-221,-256,-262,-260,-229,-409,-406,-387,-391,-437,-455,-626,-617,-568,-575,-616,-616,-706,-686,-777,-777]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. Bc4 dxe5 8. Nxe5 e6 9. O-O Be7 {B22: Sicilian: 2 c3} 10. Nc3 (10. Nf3 O-O 11. Nc3 Nxc3 12. bxc3 b6 13. Re1 Bb7 14. Bd3 Rc8 15. Bd2 Bf6 16. h4 Na5 17. Ng5 Bxg5 18. hxg5 Nc4 19. Bf4 {½-½ (83) Pourramezanali,A (2535)-Kokarev,D (2608) St Petersburg 2018}) 10... Nxc3 {LiveBook: 6 Games} 11. Nxc6 Nxd1 {Black is slightly better.} 12. Nxd8 Nxb2 $1 13. Nxe6 $146 {[#]} (13. Bxb2 $15 Bxd8 14. Rad1) ({Predecessor:} 13. Bxb2 Bxd8 14. d5 O-O 15. Ba3 Bf6 16. Bxf8 Bxa1 17. Ba3 {0-1 (55) Goodwin,B (2005)-Bolignano,G (2272) ICCF email 2012}) 13... Nxc4 $19 14. Nc7+ Kd7 15. Nxa8 Bd6 16. Bg5 {and if Rfc1 works, White does fine.} b6 17. Rfe1 (17. Nxb6+ $17 Nxb6 18. Rfc1) 17... Ba6 18. Nxb6+ axb6 ({Don't take} 18... Nxb6 19. Bd2) 19. Rab1 Ra8 20. Rec1 (20. Bh4 {was called for.}) 20... b5 {[%cal Bb6b5,Bb5b4][%mdl 32]} 21. h3 b4 22. Bh4 {Now Bg3 and White clings on.} Bb5 23. Bg3 Bf8 ({Less strong is} 23... Rxa2 24. Bxd6 Nxd6 25. Rxb4 $15) 24. Rc2 Kc6 25. d5+ Kxd5 26. Rd1+ Kc6 27. Rdc1 Bc5 28. Bf4 Kb6 29. Be3 $2 {[#]} (29. g4) 29... Bxe3 ({Much less strong is} 29... Nxe3 30. Rxc5 Nd1 31. Rc8 $19) 30. fxe3 Nxe3 31. Rb2 Nd5 {Black is clearly winning.} 32. Rd1 Bc4 33. Rdd2 Kc5 34. Rf2 f6 35. g4 Ra3 36. Kh2 g5 {Accuracy: White = 11%, Black = 98%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Polansky, Adam Lubos"]
[Black "Lalic, Bogdan"]
[Result "1/2-1/2"]
[ECO "D71"]
[WhiteElo "2046"]
[BlackElo "2418"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,60,20,19,22,8,17,20,21,14,22,19,19,9,14,0,9,7,13,18,21,4,16,14,25,26,27,0,37,0,26,36,92,16,25,0,51,47,21,25,37,58,101]} 1. d4 Nf6 2. c4 g6 3. g3 c5 4. Nf3 Bg7 5. Bg2 Qa5+ 6. Nc3 Ne4 7. Bd2 Nxd2 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3} 8. Qxd2 cxd4 9. Nxd4 Nc6 10. e3 O-O 11. O-O {LiveBook: 11 Games} Rb8 12. Rfd1 Nxd4 13. exd4 d6 {[#]} 14. Nd5 $146 {[%cal Bc3d5,Bd5e3,Be3c2][%mdl 32]} ({Predecessor:} 14. Qe3 Bg4 15. Rd2 {1-0 (63) Kovalenko,I (2650)-Djuric,S (2397) Bastia 2014}) 14... Qd8 15. Rac1 e6 16. Ne3 b6 17. Nc2 a5 18. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Ba6 19. b5 Bb7 20. a4 Bxg2 21. Kxg2 Rc8 22. Ne3 Qe7 23. Rc2 Qb7+ 24. Kg1 Rfd8 25. Qe2 Bh6 {[#]} (25... Bf8 $14) 26. f4 ({Better is} 26. c5 $1 $16) 26... Bg7 27. Kf2 f5 (27... Qe7 $11) 28. c5 $14 dxc5 29. dxc5 bxc5 {[#]} 30. Rxc5 $1 {[%mdl 512] Threatens to win with Qc4.} Bf8 {Accuracy: White = 52%, Black = 45%.} (30... Rxc5 31. Rxd8+) 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Tesar, Jan"]
[Black "Spiess, Gunter"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2043"]
[BlackElo "2414"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,64,8,25,6,0,2,18,14,2,-25,0,14,7,-42,0,-16,-8,-16,-35,-39,-25,-40,0,0,0,0,0,0,21,0,0,-512,-529,-659,-430,-618,-436,-414,-419,-417,-416,-565,-534,-550,-525,-782,-750,-29991,-29992,-29992,-29993]} 1. c4 e6 2. e4 d5 3. exd5 exd5 4. d4 Nf6 5. Nf3 Bb4+ 6. Nc3 O-O 7. Be2 h6 8. O-O Nc6 9. h3 {C01: French: Exchange Variation} Be6 $146 ({Predecessor:} 9... Re8 10. Be3 Ne7 11. Qb3 Ba5 12. Nxd5 Nexd5 13. cxd5 Nxd5 14. Bc4 c6 15. Bd2 Bb6 16. Bb4 Be6 {0-1 (30) Jezov,R (2229)-Kantans,T (2449) Vilnius 2014}) 10. c5 {Nb1 is the strong threat.} Bxc3 11. bxc3 {The position is equal.} Ne4 12. Qb3 Na5 13. Qa3 b6 14. Nd2 Qd7 15. Nxe4 dxe4 16. Bf4 g5 17. Bh2 f5 18. f3 Nc4 19. Qa6 $1 Ne3 $36 {[%mdl 2048] Black is pushing.} 20. Rf2 Nd5 21. fxe4 fxe4 {Hoping for ...Rxf2.} 22. Rxf8+ Rxf8 23. Qxa7 $2 {[%mdl 8192]} (23. Be5 $11 {and White is okay.}) 23... Nxc3 $19 {[%mdl 64] [#] Discovered Attack} 24. Ba6 Qxd4+ {[%mdl 64] Double Attack} 25. Kh1 Nb5 26. Bxb5 {And now Rb1 would win.} Qxa1+ {[%mdl 64] Double Attack} 27. Bg1 Qe5 28. a4 e3 29. cxb6 cxb6 30. Be2 Bd5 {( -> ...Qg3)} 31. Qxb6 Qe4 {[%csl Gd5][%cal Re4g2][%mdl 64] [#] Double Attack} 32. Bf3 Rxf3 {Accuracy: White = 27%, Black = 66%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Machala, Vladislav"]
[Black "Roeder, Matthias"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2034"]
[BlackElo "2396"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,90,6,33,18,28,20,48,45,49,33,28,31,37,12,21,18,3,7,29,18,53,57,22,31,40,-27,-13,-33,-21,-38,-67,-45,-33,-33,-34,-36,-52,-65,-16,-40,0,0,0,0,0,0,77,0,0,-45,-46,-52,-35,-136,-114,-163,-147,-179,-146,-325,0,-337,-327,-369,-189,-191,-190,-156,-186,-213,-230,-202,-147,-29980,-29981,-29996,-29997]} 1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. d4 Bg4 5. Nbd2 e6 6. Bd3 Nbd7 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} 7. Qc2 (7. O-O Bd6 8. b3 O-O 9. Bb2 a5 10. Qc2 Qb8 11. h3 Bh5 12. Ng5 Bg6 13. Bxg6 hxg6 14. a4 Bb4 15. Ndf3 Nh7 16. Nxh7 Kxh7 17. e4 {1-0 (54) Andreikin,D (2712)-Korobov,A (2652) Huaian 2017}) 7... Bh5 8. h3 Bg6 {LiveBook: 3 Games. The position is equal.} 9. b3 Bb4 10. O-O O-O 11. Bxg6 hxg6 12. a3 $146 Bxd2 13. Nxd2 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 14. Bb2 a4 15. b4 b5 16. c5 g5 17. e4 Nxe4 18. Nxe4 dxe4 19. Qxe4 Rc8 20. f4 (20. Qg4 $14) 20... Nf6 $11 21. Qe5 g4 22. f5 Re8 23. hxg4 Nxg4 24. Qg3 $1 {[%cal Rg3g4]} Qg5 25. Bc1 Qh5 26. f6 $1 Qg6 (26... gxf6 {keeps more tension.} 27. Rxf6 Kh7 28. Rf4 Rg8 29. Rf3 Rh8) 27. fxg7 Qxg7 28. Bb2 f5 29. Rae1 Qg6 30. Rf3 Kf7 (30... Red8 $11 {remains equal.}) 31. Qf4 (31. d5 $1 $16 {[%cal Rd5e6]} cxd5 32. Qd6) 31... Red8 32. Rg3 Rd5 33. Rh3 ({Of course not} 33. Rxg4 Qxg4 34. Qh2 f4 $17) 33... Ke7 34. Qf3 (34. Bc3 $15) 34... Rg8 $17 35. Re2 Kd7 36. Qg3 Kc8 37. Qe1 $2 {[#]} (37. Bc3 $17 {was necessary.}) 37... Kd7 $2 (37... e5 $1 $19 {[%mdl 512] Hoping for ...f4.} 38. Qc1 (38. dxe5 $2 Rgd8 $19) 38... f4) 38. Qc3 $2 {[%mdl 8192] [#]} (38. Rxe6 $11 Qg7 39. Re2) 38... e5 $1 $19 {[%mdl 512]} 39. dxe5 Ke6 (39... f4 $142 40. Rd2 (40. e6+ Kc8 $17) 40... Ne3 41. Rxe3 fxe3 42. Qxe3 Qb1+ 43. Kf2 Rxd2+ 44. Qxd2+ Kc8) 40. Rd2 Rgd8 41. Rxd5 Rxd5 42. Qc2 Qg5 $40 {[%mdl 1152] Black has strong compensation. Black is out for blood.} 43. Bc1 {[#]} Qd8 $1 {( -> ...Rd1+)} 44. Rf3 $2 {[%mdl 8192]} (44. Qa2 $17) 44... Rd1+ 45. Rf1 Qd4+ {[%mdl 64] Double Attack. Accuracy: White = 31%, Black = 54%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Dwilewicz, Katarzyna"]
[Black "Zhang, Ziji"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2027"]
[BlackElo "2387"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,116,7,0,-7,3,0,13,0,0,-15,-16,-75,-71,-90,-43,-45,-55,-118,-116,-121,-121,-126,-109,-128,-77,-87,-82,-72,-12,-3,-7,-20,0,-10,0,-54,-49,-62,-32,-35,-39,-124,-133,-132,-127,-168,-136,-329,-313,-388,-392,-504,-137,-113,-81,-97,-100,-95,-89,-154,-152,-159,-168,-170,-162,-182,-176,-328,-129,-182,-91,-85,-91,-79,-93,-95,-88,-87,-79,-110,-110,-100,-97,-240,-240,-258,-240,-240,-238,-295,-268,-254,-223,-197,-185,-504,-504,-457,-366,-1677,-1677,-1371,-1547,-1037,-935]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 g6 5. O-O Bg7 6. d3 O-O {B31: Sicilian: 2...Nc6 3 Bb5 g6} 7. h3 (7. Bxc6 bxc6 8. Rb1 d6 9. b3 Nh5 10. Ne2 e5 11. Nd2 Qh4 12. Nc4 d5 13. Nd2 f5 14. Ba3 dxe4 15. dxe4 Rd8 {0-1 (23) Wang,C (2514)-Wei,Y (2700) China 2016}) 7... d6 {LiveBook: 8 Games} 8. Be3 Na5 {The position is equal.} 9. d4 cxd4 10. Nxd4 $146 ({Predecessor:} 10. Bxd4 a6 11. Be2 Nc6 12. Be3 b5 13. Qd3 Bb7 14. a4 {½-½ (78) Castilho,M (2166)-De Pinho,J (2346) ICCF email 2009}) 10... a6 11. Be2 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 12. Bf3 (12. Nb3 $11 {keeps the balance.}) 12... Bb7 $17 13. a4 b4 14. Nd5 Nc4 15. Bc1 (15. Qe2 $15 Nxe3 16. Qxe3) 15... Ne5 16. Nxb4 Nxf3+ ({Much weaker is} 16... Bxe4 $6 17. Bxe4 Nxe4 18. Re1 $11) (16... Nxe4 17. Ndc6 $11) 17. Qxf3 Bxe4 18. Qe2 Qb6 (18... Qc7 $142 19. c3 e5) 19. c3 e5 20. a5 Qc7 (20... Qb7 $17 21. Nf3 h6) 21. Nf3 $11 Bb7 22. Rd1 h6 23. Be3 Rfe8 24. Nd2 (24. Qd2 $11) 24... d5 $15 25. Bb6 Qc8 26. Nb3 Bf8 27. Rd2 {[#]} (27. Qf1 $15) 27... d4 $1 $17 {[%cal Rd4c3][%mdl 512]} 28. Rc1 (28. cxd4 Bxb4) 28... Qf5 29. Rdd1 Nh5 30. f3 $2 (30. Nd3 $17) 30... Nf4 $19 31. Qf1 Qg5 32. Kh2 Bxb4 $2 (32... Nh5 $2 33. Bc5 $19) (32... e4 $19 {and Black stays clearly on top.} 33. fxe4 Rxe4 34. Nxd4 Bd6) 33. cxb4 $17 Nd5 {And now ...Ne3 would win.} 34. Qf2 Nxb6 35. axb6 Qf6 36. Qd2 (36. Nc5 $142 Qxb6 37. f4) 36... Qxb6 37. Nc5 Kg7 38. f4 Rad8 39. fxe5 Rxe5 40. Rc4 $2 {[#]} (40. Rf1) 40... Red5 $2 (40... Bxg2 $1 $19 {[%mdl 512]} 41. Rxd4 (41. Qxg2 Qd6 $19) 41... Bd5) 41. Qf4 {[#]} (41. Rf1 $17 {is a better defense.}) 41... d3 ({Black should try} 41... Ba8 $1 $19 {Threatens to win with ...Rf5.} 42. Rc2 (42. Rf1 $2 Rf5 $19) 42... Rf5) 42. Nxb7 Qxb7 43. Rc7 {Qxf7+ would kill now.} Rf5 44. Qxh6+ Kxh6 45. Rxb7 {[%mdl 4096] Endgame KRR-KRR} Rf2 46. Kg3 Rxb2 47. Rxf7 Rxb4 48. Kf3 (48. Ra7 $17 {keeps fighting.}) 48... d2 $19 49. Ke3 Rb6 50. Re7 Rbd6 51. h4 Kh5 52. Re4 Rd3+ 53. Ke2 R3d4 54. Re6 $2 (54. Rxd4 Rxd4 55. Ke3 Rxh4 56. Rxd2) 54... R8d6 55. Re5+ Kxh4 56. Ke3 $2 (56. Kf3 Rd3+ 57. Kf2) 56... R4d5 {Black is clearly winning.} 57. Re4+ Kg3 58. Ke2 g5 {Accuracy: White = 33%, Black = 65%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Pribyl, Viktor"]
[Black "Vokac, Marek"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "2020"]
[BlackElo "2380"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,96,12,11,0,8,-11,-9,-49,-53,-32,-28,-67,-84,-56,-72,-79,-67,-67,-60,-70,-57,-114,-46,-50,5,5,5,5,12,0,0,0,0,-50,-27,-20,-18,-20,111,95,129,62,90,75,97,79,79,79,103,0,160,72,79,79,78,78,78,85,146,67,175,-50,-59,-56,-19,-54,-42,-45,-45,-380,-370,-362,-337,-592,-69,-343,-314,-6289,-6544,-2676,-5193,-29988,-29989,-29991,-29990]} 1. d4 c5 2. c3 Qc7 (2... e6 3. Nf3 Nc6 4. a3 Nf6 5. Bf4 Qb6 6. Ra2 a5 7. e3 a4 8. Nbd2 d5 9. Bd3 Nh5 10. Be5 Nxe5 11. Nxe5 Nf6 {½-½ (19) Bryzgalin,K (2424)-Gutman,G (2476) Pardubice 2018}) 3. g3 Nf6 4. Bg2 d6 5. Nf3 g6 6. O-O {A43: Schmid Benoni} Bg7 7. dxc5 Qxc5 {LiveBook: 4 Games} 8. Be3 {The position is equal.} Qh5 $146 ({Predecessor:} 8... Qc7 9. Na3 Nc6 10. Nb5 {½-½ (59) Eiber,M (2206)-Ganaus,H (2254) Bayern 2005}) 9. Qa4+ Nc6 10. Nd4 O-O 11. Nxc6 bxc6 12. Qxc6 Ng4 {[%csl Gg4][%cal Rh5h2]} 13. h4 Nxe3 14. Qxa8 Nxf1 15. Bxf1 Qb5 16. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Qb6 {[%mdl 1024] Black has compensation.} 17. Bg2 {[#]} (17. Qh1 $15) 17... Ba6 (17... d5 $1 $17 {[%mdl 512]} 18. Qxd5 Rd8) 18. Qe4 $15 {[#]} e6 ({Better is} 18... d5 $1 $15 {[%mdl 512]} 19. Qxe7 (19. Qxd5 Rd8) 19... d4) 19. a4 $11 d5 20. Qc2 Rc8 {aiming for ...Qxb4!} 21. b5 Bb7 22. Ra3 a6 23. e4 d4 {White must now prevent ...dxc3.} 24. c4 axb5 25. axb5 Bf8 (25... Qxb5 $11 {keeps the balance.} 26. cxb5 Rxc2) 26. Ra2 $16 Bb4 27. Kh2 (27. Qb3 $16 Bd6 28. Nd2) 27... Qc5 28. Ra4 e5 ({Don't blunder} 28... Qxc4 $2 29. Qxc4 Rxc4 30. Na3 $18) 29. Qb2 Be1 30. Qe2 $1 $36 {[%cal Re2e1][%mdl 2048] White is on the roll.} Bc3 31. Qc2 (31. Qd3 $16) 31... Rd8 $2 (31... Bb4 $11) 32. Qd3 (32. Nxc3 dxc3 33. Qxc3 Qxf2 $11) (32. Kg1 $142 $1) 32... Bb4 33. Na3 Qe7 34. Nc2 Bc5 35. Ne1 f5 (35... Bb4 $142 36. Nf3 Bc5) 36. Kg1 (36. Qe2 $1 $16) 36... Qf7 (36... Rf8 $14) 37. f3 $2 ({White should try} 37. Qe2 $18) 37... Qf6 38. Ra2 f4 39. g4 Qxh4 40. Kf1 $1 Qh2 41. Ra4 $2 {[%mdl 8192]} (41. Ke2 $15) 41... h5 $1 $19 42. gxh5 gxh5 {Hoping for ...h4.} 43. b6 $2 {[#]} (43. Ke2 h4 44. Kd1) 43... Qh4 $2 (43... h4 $1 $19 44. Ra5 h3 45. Bxh3 Bb4) 44. Ke2 $2 {[%mdl 8192]} (44. Ra2 $15) 44... Rd6 ({But not} 44... Bxb6 $2 {[#]} 45. c5 $1 $18 {[%mdl 512]}) 45. Qb3 $2 {[#]} (45. Ra1) 45... d3+ $1 {[%mdl 512]} 46. Nxd3 Qh2 47. Kd2 Qxg2+ 48. Kc3 Qxf3 {Precision: White = 33%, Black = 44%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.11"]
[Round "1"]
[White "Czernek, Tymon"]
[Black "Gschnitzer, Adrian"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2012"]
[BlackElo "2368"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,71,0,0,53,49,50,34,53,30,86,76,81,55,21,42,21,24,106,92,102,91,132,126,144,123,159,177,507,286,284,267,279,153,153,0,0,0,147,153,241,0,0,0,0,2,73,73,73,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d3 g6 4. g3 Bg7 5. Bg2 Nf6 6. O-O O-O 7. c3 d5 8. Nbd2 b6 9. Re1 dxe4 10. dxe4 {[%cal Bd3e4,Be4e5,Be5e6,Be6f7][%mdl 32] LiveBook: 39 Games} Nd7 {A08: King's Indian Attack} ({Better is} 10... e5 $11) (10... e5 11. Nc4 Qc7 12. Ne3 Bb7 13. Nd2 Rad8 14. Qc2 Ne7 15. a4 Ba6 16. b3 Bd3 17. Qa2 a5 18. Ba3 {1-0 (45) Chigaev,M (2559)-Natacheev,P (2296) Sochi 2017}) 11. e5 $14 {And now e6 would win.} Rb8 {[%cal Rd7e5]} 12. e6 Nde5 $1 {White is slightly better.} 13. exf7+ $1 Kh8 $146 (13... Nxf7 $11 14. Qa4 Bd7) 14. Ng5 {Threatens to win with Qa4.} h6 15. Bxc6 Nxc6 16. Ne6 $36 {[%mdl 2048] White has good play.} Bxe6 $1 17. Rxe6 {[%mdl 64] Double Attack} Qd7 (17... Ne5 $1 $11) 18. Qe2 $1 $16 (18. Rxg6 Ne5 $15) 18... Rxf7 19. Rxg6 Rbf8 20. f4 e5 21. Nf3 Re7 {[#] Black wants to play ...exf4.} 22. f5 $1 {[%mdl 512]} Rxf5 $2 (22... Qxf5 {is more resistant.} 23. Nh4 (23. Rxc6 Qxf3 24. Qxf3 Rxf3 $16) 23... Nd4 24. cxd4 exd4) 23. Bxh6 Bxh6 24. Rxh6+ Kg7 25. Rd1 (25. Rh4 $18) 25... Nd4 26. Nxd4 $2 (26. cxd4 $16 Kxh6 27. dxc5 (27. Nxe5 Rg5 $11) (27. dxe5 Qb7 $16)) 26... exd4 $11 27. Qd2 {aiming for Rh4.} Qe8 (27... Re4 $1 $11 {keeps the balance.}) 28. Rh4 $16 (28. cxd4 $2 Re2 $19) 28... Rh5 {[#]} (28... Rf6 $16 {was worth a try.} 29. cxd4 Re2) 29. Rxh5 $2 ({Weaker is} 29. cxd4 Rxh4 30. Qg5+ (30. gxh4 Kh8 $11) 30... Kf8 $16) (29. Rg4+ $1 $18 Kh8 30. Rf1 (30. cxd4 Re2 $16)) 29... Qxh5 $11 30. Re1 Rxe1+ 31. Qxe1 {Threatening cxd4. KQ-KQ} d3 (31... Qd5 $1 $11 {remains equal.}) 32. Qe7+ $16 Qf7 {[#]} 33. Qe5+ (33. Qxf7+ $1 $16 Kxf7 34. Kf1) 33... Kg8 $1 $11 {The position is equal.} 34. Qg5+ Kh7 35. Qh4+ Kg7 $1 36. Qg4+ {Accuracy: White = 44%, Black = 25%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Postny, Evgeny"]
[Black "Yakimenko, Alexander A."]
[Result "1-0"]
[ECO "A91"]
[WhiteElo "2623"]
[BlackElo "2233"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,81,52,27,58,51,61,62,66,53,48,61,52,37,37,35,42,33,17,32,54,32,50,24,54,50,58,41,101,100,92,92,102,101,106,105,98,97,100,90,100,106,104,77,90,84,51,-11,-3,0,206,206,189,191,208,106,206,206,206,206,906,922,1023,991,29996,29997,29997,29998,29998,29999]} 1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Be7 5. Nh3 c6 6. O-O {A91: Classical Dutch: Early Deviations} O-O (6... d6 7. Nc3 O-O 8. d5 e5 9. dxc6 bxc6 10. b4 Be6 11. b5 e4 12. Qa4 cxb5 13. cxb5 Nbd7 14. Ng5 Nb6 15. Nxe6 Nxa4 16. Nxd8 Nxc3 {1-0 (82) Morozevich,A (2739)-Kovalenko,I (2644) Moscow 2013}) 7. b3 d5 8. Nd2 {LiveBook: 5 Games. White is slightly better.} Qe8 9. Nf3 Ne4 $146 ({Predecessor:} 9... h6 10. Ne5 Nbd7 11. Nd3 g5 12. f3 Qg6 13. Qc2 Bd6 {0-1 (41) Pill,B-Schlotmann,R Germany 1995}) 10. Nf4 Bd6 11. Nd3 b6 12. Qc2 Bb7 13. Bf4 Bxf4 14. Nxf4 Nd7 15. Rfd1 Rc8 16. Qb2 Qe7 17. Rac1 Rfe8 18. e3 a5 19. a3 Qf6 20. Bf1 Kh8 (20... g5 $14) 21. b4 $16 axb4 22. axb4 ({Reject} 22. Qxb4 $6 dxc4 23. Bxc4 g5 $14) 22... Ra8 23. Nd3 Qe7 24. Nfe5 Nxe5 25. Nxe5 Rec8 26. Rc2 Ra4 27. cxd5 exd5 28. Rb1 Qe8 29. Rbc1 Rca8 30. Nxc6 (30. Bd3 $14) 30... Ra2 $1 $11 {[%cal Ra2b2]} 31. Qb3 $1 Rxc2 $2 {[#]} (31... R8a3 $11 32. Qxd5 Rxc2 33. Rxc2 Rc3 34. Rxc3 Nxc3 35. Qxf5 Bxc6) 32. Qxc2 $18 Rc8 {[%cal Rc8c6]} 33. b5 Nd6 34. Qb1 (34. Qa4 $18) 34... g6 (34... Bxc6 $16 35. bxc6 (35. Rxc6 Rxc6 36. bxc6 Qxc6 $16) 35... Rxc6) 35. Ne5 Rxc1 36. Qxc1 Qc8 $2 (36... Qe7 37. Bg2 Ne8) 37. Qa3 Ne4 38. Qe7 {[#] White wants to mate with Nf7+.} Ba8 39. Nf7+ {White mates.} Kg8 40. Nh6+ Kh8 41. Qe5+ {Precision: White = 59%, Black = 41%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Frolov, Artur"]
[Black "Starek, Stanislav"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2430"]
[BlackElo "2221"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,101,86,154,135,128,128,114,117,150,154,209,210,208,149,154,152,219,216,212,204,208,133,140,138,130,142,133,129,181,186,177,176,163,168,187,182,221,221,221,221,221,221,221,221,221,221,221,221,183,164,941,922,940,942,945,949,1100,931,924,949,952,946,952,942,1049,917,922,916,923,913,947,898,949,771,764,764,1687,612,29976,29977,29976,29977,29973,5627]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Nxc6 bxc6 7. e5 Ng8 8. Bc4 Qa5 9. Bf4 Bg7 10. Qf3 {B34: Sicilian: Accelerated Dragon with 5 Nc3: sidelines} (10. O-O Bxe5 11. Bxe5 Qxe5 12. Re1 Qf5 13. Qd4 Qf6 14. Qc5 Kf8 15. Re3 d5 16. Rf3 Bf5 17. Ba6 Rb8 18. g4 {0-1 (38) De Jong,M (2345)-Bu,X (2707) Vlissingen 2014}) 10... e6 {LiveBook: 5 Games} ({Black should play} 10... Nh6) 11. O-O Bxe5 12. b4 {White is better.} Qc7 {[#]} 13. Nb5 $1 {[%mdl 512]} cxb5 14. Bxe5 Qxe5 (14... Qc6 $16) 15. Qxa8 $18 {[%mdl 64] Double Attack} Ne7 16. Rfe1 Qd4 $146 ({Predecessor:} 16... Qc7 17. Bxb5 O-O {1-0 (41) Zhigalko,A (2537)-Kot,J (2271) Warsaw 2005}) 17. Bxb5 {Threatens to win with Rad1.} Qb6 (17... Qxb4 $16 18. Rab1 Qc5) 18. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} O-O 19. Qe4 Nd5 20. a5 Qxb5 21. c4 {[%mdl 64] Double Attack} Qxb4 {...Ne7 is the strong threat.} 22. cxd5 Qxe4 23. Rxe4 $16 {[%mdl 4096] Endgame KRR-KRB} Bb7 (23... Ba6 $16) 24. Rc4 $1 $18 Bxd5 25. Rc7 $1 {[%csl LRa7,LRd7][%mdl 64] Double Attack} a6 26. Rxd7 Rc8 27. Rd6 Bc4 28. Rc1 Rb8 29. Rc6 Bb5 30. Rc8+ Rxc8 31. Rxc8+ {KR-KB} Kg7 32. f4 Kf6 33. Rc7 h6 34. h4 {[%cal Bh2h4,Bh4g5][%mdl 32]} g5 $2 (34... h5 35. Kf2 Bd3) 35. fxg5+ hxg5 36. hxg5+ Kg6 37. Kf2 Be8 38. Rc5 Ba4 39. Ke3 Be8 40. Kf4 Ba4 41. g3 Be8 42. Rc8 Bb5 43. Rb8 Bc4 44. Rh8 Kg7 45. Rh6 Bf1 46. Ke5 Bd3 47. Rf6 Bc4 {[#]} 48. g4 (48. g6 $142 $1 fxg6 49. Rxe6) 48... Be2 {[#]} 49. g6 $1 {White mates.} fxg6 50. g5 Bc4 51. Rxe6 {Accuracy: White = 78%, Black = 42%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Plischki, Sebastian"]
[Black "Chudinovskikh, Alexander M"]
[Result "1/2-1/2"]
[ECO "E21"]
[WhiteElo "2426"]
[BlackElo "2184"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,97,23,41,24,12,-14,-12,-25,20,16,49,0,0,0,0,0,0,0,0,-10,-7,-12,0,-15,-15,-16,-17,-57,-56,-57,-57,-60,-58,-57,-56,-59,-58,-66,-60,-60,-60,-65,-60,-76,-60,-60,-28,-41,-40,-37,-25,-43,-43,-58,-57,-55,-52,-71,-38,-38,-38,-38,-38,-232,-219,-219,-193,-239,-219,-318,-318,-318,-318,-318,-318,-318,-318,-318,-318,-318]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 O-O 7. Bg2 d5 8. cxd5 Nxd5 9. Qb3 Na6 10. O-O {E20: Nimzo-Indian: 4 g3 and 4 f3} Nc5 {LiveBook: 5 Games} (10... Nxc3 11. bxc3 Bc5 12. Rd1 Qe7 13. Rb1 Rb8 14. Nb5 b6 15. Qa4 Bb7 16. Bf4 Rbd8 17. Bxb7 Qxb7 {1-0 (43) Gelfand,B (2733)-Jakovenko,D (2753) Odessa 2009}) 11. Qc4 {[%cal Rc3d5]} Bxc3 12. bxc3 {The position is equal.} (12. Qxc5 $5 {[%cal Rb2c3]} b6 13. Qc4 $11) 12... b6 13. Nc6 Qf6 $146 ({Predecessor:} 13... Qe8 14. Nb4 Bb7 15. Re1 Qa4 16. Bb2 a5 17. Qd4 Rfd8 18. Nxd5 exd5 {1-0 (66) Atalik,S (2535)-Tzoumbas,A (2415) Peristeri 1994}) 14. Qd4 Ba6 15. Bxd5 exd5 16. Qxf6 gxf6 17. Ne7+ Kg7 18. Re1 Rfe8 19. Nxd5 {[#] aiming for Nc7.} Rxe2 20. Be3 {Threatens to win with Bxc5.} Rd8 $36 {[%mdl 2048] Black has the initiative.} 21. Nf4 (21. Ne7 {is interesting.} Rxe1+ 22. Rxe1 Bc4 23. Nf5+ Kg6 24. Nh4+) 21... Rxe1+ 22. Rxe1 Ne6 23. Nxe6+ fxe6 $11 {[%mdl 4096] Endgame KRB-KRB} 24. g4 Kf7 25. Kg2 Rd3 26. Rc1 Bc4 27. a3 e5 28. Kf3 Ke6 29. h3 Rd5 30. Kg3 Ra5 31. Ra1 Ra4 32. f4 exf4+ 33. Kxf4 Ba2+ 34. Bd4 Rxa3 35. Ke3 Ra5 36. Kd2 f5 37. gxf5+ Kxf5 38. Kc1 Kg5 39. Kb2 Be6 {Hoping for ...Rxa1.} 40. Rxa5+ bxa5 {[%cal Bb6a5,Ba5a4][%mdl 32]} 41. Bxa7 $2 (41. Ka3 $1 $15) 41... Bxh3 $15 {KB-KB} 42. Bb6 {[#]} a4 $1 43. c4 Bd7 44. c5 (44. Be3+ $142 Kf5 45. c5) 44... h5 $19 {Black has a decisive advantage.} 45. Ka1 Kg4 46. Bd8 h4 47. Bxh4 Kxh4 48. c6 Bxc6 49. Kb2 {[%mdl 32768] Precision: White = 51%, Black = 79%. . An unexpected result.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Spiess, Gunter"]
[Black "Barrish, Daniel"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2414"]
[BlackElo "2166"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,53,21,25,8,8,0,0,12,12,9,11,0,0,0,0,-15,-22,-39,9,17,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-3]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bd6 (5... Be7 6. Bg2 O-O 7. O-O Nbd7 8. Nc3 c6 9. Bf4 dxc4 10. e4 Re8 11. a4 b6 12. d5 exd5 13. exd5 Bb7 14. a5 bxa5 15. d6 Bf8 16. Nd2 Nd5 17. Nxd5 cxd5 18. Nxc4 dxc4 19. Bxb7 {½-½ (42) Nakamura,H (2777)-Karjakin,S (2773) Saint Louis 2018}) 6. Bg2 {E01: Catalan: Early deviations} c6 7. O-O O-O 8. b3 Ne4 9. Bc1 Qe7 10. Bb2 Nd7 {LiveBook: 5 Games} 11. Qc2 f5 12. Ne5 Nxe5 13. dxe5 {[#]} Bc5 $146 14. e3 b5 15. Rc1 {[#] Black must now prevent cxb5.} bxc4 16. bxc4 Rb8 17. Nc3 Ba6 18. Bf1 Nxc3 ({But not} 18... dxc4 $6 19. Nxe4 fxe4 20. Bc3 $14) (18... Qg5 $5 {[%cal Re4f2]} 19. cxd5 Bxf1 20. Nxe4 fxe4 21. Rxf1 cxd5 $15) 19. Bxc3 {cxd5 is the strong threat.The position is equal.} dxc4 20. Rd1 Rfd8 21. Bd4 Bxd4 22. exd4 c5 23. Bxc4 Bxc4 24. Qxc4 cxd4 25. Rxd4 Rxd4 26. Qxd4 Rd8 27. Qc3 {Precision: White = 56%, Black = 81%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Roeder, Matthias"]
[Black "Laverton, Christian"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2396"]
[BlackElo "2147"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,53,16,29,0,0,-39,0,-16,0,0,0,-4,0,-14,-11,-29,25,-18,14,-4,0,0,0,0,6,-14,-9,-13,-22,-57,-13,-67]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O Bf5 5. d3 e6 6. b3 Bd6 7. Bb2 O-O 8. Nbd2 h6 9. Qe1 Bh7 10. e4 Be7 11. Qe2 a5 12. a3 {A07: Réti Opening: New York and Capablanca Systems} Na6 {LiveBook: 4 Games} (12... c5 13. Rfe1 a4 14. exd5 Nxd5 15. Ne5 axb3 16. Nxb3 Ra6 17. c4 Nf6 18. d4 cxd4 19. Nxd4 Qc8 {½-½ (57) Indjic,A (2540)-Nabaty,T (2579) Belgrade 2013}) 13. e5 Nd7 14. Ne1 $146 ({Predecessor:} 14. Nd4 a4 15. b4 c5 16. bxc5 Bxc5 17. Rab1 {½-½ (27) Heim,S (2400)-Madsen,D (2265) Norway 1997}) 14... Qb6 15. a4 Nb4 16. Kh1 c5 17. f4 Qa6 18. h4 Rad8 19. Rf3 d4 ({Better is} 19... Nc6) 20. Bh3 Qc6 21. Kh2 Nb6 22. Nc4 Nxc4 23. bxc4 Rde8 24. c3 dxc3 25. Bxc3 Rd8 26. f5 exf5 27. Bxf5 {Accuracy: White = 28%, Black = 46%.} (27. Ng2 $11) 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Zhang, Ziji"]
[Black "Riha, Vojtech"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2387"]
[BlackElo "2145"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,75,79,52,63,48,48,47,61,58,130,130,130,130,133,139,160,170,222,204,204,214,174,151,162,158,197,202,213,203,260,262,250,189,239,243,266,266,539,531,569,406,395,427,448,145,455,456,452,449,433,421,464,464,446,432,2213,2197,1741,1675,1345,1266]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. g3 d6 6. Bg2 c6 7. O-O Qa5 8. e4 Qh5 9. Ng5 {LiveBook: 64 Games} e5 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6} (9... Qxd1 10. Rxd1 e5 11. d5 h6 12. Nf3 cxd5 13. cxd5 Bd7 14. Nd2 Rc8 15. Bf1 Bf8 16. f3 Na6 17. Nc4 Nb4 18. Ne3 {½-½ (50) Leko,P (2734)-Mamedyarov,S (2761) Dortmund 2010}) 10. Qxh5 Nxh5 11. d5 h6 {White is slightly better.} 12. Nf3 f5 $146 (12... Nf6 $14) ({Predecessor:} 12... Nf6 13. dxc6 bxc6 14. Rd1 Ne8 15. c5 dxc5 16. Be3 Na6 17. Na4 {1-0 (43) Mednis,E (2460)-Digamo,C Manila 1991}) 13. Nh4 $16 Kh7 14. exf5 gxf5 15. Rd1 e4 16. f3 {[%cal Bf2f3,Bf3e4][%mdl 32]} Be5 (16... Bf6 {was called for.} 17. Kh1 (17. fxe4 f4 $16) 17... c5 18. fxe4 f4) 17. fxe4 $18 f4 18. Bf3 Ng7 19. Ne2 {[%cal Rg3f4]} fxg3 20. hxg3 {[%cal Bh2g3,Bg3g4][%mdl 32]} c5 21. Kg2 Nd7 22. Rh1 Nb6 23. g4 Nxc4 24. Nf5 h5 25. Nf4 Bxf5 26. gxf5 ({Not} 26. exf5 Bxf4 27. Bxf4 Rae8 $16) 26... Nxb2 $2 (26... Rg8 {might work better.} 27. Kf1 (27. Nxh5 Nxh5+ 28. Kf1 Kg7 $16) 27... Rh8) 27. Rb1 Nc4 28. Rxb7 Rab8 {[#]} 29. Bxh5 $1 {[%mdl 512]} Rxb7 30. Bf7+ $1 Nh5 31. Rxh5+ {White is clearly winning.} Kg7 {Strongly threatening ...Bxf4.} 32. Ne6+ {[%mdl 64] Double Attack} Kxf7 33. Rh7+ Kg8 34. Rxb7 Ra8 35. Bg5 Na5 (35... Bh8 $142 36. f6 Ne5) 36. Rc7 {[#] White threatens f6 and mate.} Rb8 37. f6 Rb2+ 38. Kf3 {Accuracy: White = 91%, Black = 28%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Vokac, Marek"]
[Black "Haase, Pavel"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2380"]
[BlackElo "2141"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,96,7,12,45,2,-4,-11,79,77,75,73,71,47,43,0,14,8,8,0,0,-32,-33,-27,0,-30,-25,-36,-22,-31,-25,-30,-27,-24,-27,-40,-36,-52,-4,-8,-10,-38,-32,-111,-113,-116,-106,-135,-135,-280,-268,-358,-364,-325,-347,-322,-302,-370,-139,-125,-117,-118,-108,-113,-133,-129,-133,-258,-86,-307,-270,-29989,-29988,-29988,-29989,-29989,-29990,-29998,-29996,-29999,-29999]} 1. Nf3 Nf6 2. b3 c5 3. Bb2 d5 4. e3 Nc6 5. Bb5 e6 6. Ne5 Bd7 7. Bxc6 Bxc6 8. O-O Bd6 9. f4 Rc8 10. d3 b5 {A03: Bird's Opening with 1...d5} (10... O-O 11. Nd2 Be8 12. Qe2 Nd7 13. Nxd7 Qxd7 14. a4 f6 15. e4 Be7 16. Kh1 Bg6 17. Qf3 Bd8 18. Rf2 {½-½ (48) Schiendorfer,R (2391)-Degerhammar,R (2448) ICCF email 2012}) 11. Nd2 Ba8 12. a4 c4 $146 {[#]} (12... b4 $11) ({Predecessor:} 12... a6 13. axb5 axb5 14. Ndf3 h6 15. Qe1 O-O {½-½ (15) Milinkovic,N (2071)-Lindner,M (2056) Velenje 2006}) 13. Bd4 $1 $16 ({Much worse is} 13. axb5 c3 $15) 13... cxd3 14. cxd3 bxa4 15. Rxa4 a5 16. Ndf3 O-O 17. Qa1 Bb4 18. Ra2 Ne8 19. Rc1 f6 20. Ng4 $1 Nd6 21. Rac2 Rxc2 22. Rxc2 Nb5 23. Bc5 Bxc5 24. Rxc5 Qb6 $36 {[%mdl 2048] Black has some pressure.} 25. d4 Bc6 26. Nf2 Ra8 27. Rc2 a4 28. bxa4 Nd6 29. Ra2 Qb3 30. a5 ({White should try} 30. Nd1 $15) 30... Qxe3 $17 31. Ra3 Qxf4 32. a6 Nc4 33. Rb3 {[#]} (33. Ra2 $17) 33... Rxa6 $1 $19 {[%mdl 576] Deflection} 34. Qxa6 Qc1+ 35. Nd1 Qxd1+ {[%mdl 64] Double Attack} 36. Kf2 Qxb3 37. Qxc6 {[%cal Rc6e8]} Qb2+ $2 (37... Qe3+ $19 {has better winning chances.} 38. Kg3 h6) 38. Kg3 $17 {[%cal Rc6e8]} Qb8+ 39. Kh3 Nd6 {And now ...h5 would win.} 40. Qd7 Ne4 {( -> ...Nf2+)} 41. Qxe6+ Kf8 42. g3 (42. Qd7 $17) 42... Qb5 $2 (42... Qb7 $19 43. Kg4 g6) 43. Kh4 $2 (43. Qc8+ $17 {is the only way for White.} Ke7 44. Qc7+ Qd7+ 45. Qxd7+ Kxd7 46. Ne1) 43... g6 $19 {aiming for ...Qe2.} 44. g4 $2 (44. Qc8+ $19 Kg7 45. Qd8) 44... Qe2 {Black mates.} 45. Qc8+ Kg7 46. Qc7+ Kh6 47. Ng1 Qf2+ 48. Kh3 Qf1+ {Accuracy: White = 33%, Black = 52%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Vojta, Tomas"]
[Black "Lys, Josef"]
[Result "1/2-1/2"]
[ECO "B21"]
[WhiteElo "2351"]
[BlackElo "2134"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,121,-4,-8,-5,-4,-47,-22,-28,-18,-37,-49,-42,-20,-50,-45,-41,-47,-74,-64,-93,-102,-116,-109,-112,-86,-77,-80,-112,-107,-110,-97,-103,-109,-102,-100,-102,-36,-81,-35,-81,-81,-76,-16,-16,-4,-8,-8,-9,0,-17,0,-19,-4,-11,0,0,10,18,12,24,77,78,70,75,72,61,90,84,92,20,93,104,156,110,110,110,110,110,110,110,110,110,113,100,124,124,126,125,120,93,91,81,85,26,28,28,28,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. f4 d5 3. exd5 Nf6 4. Nf3 Nxd5 5. Nc3 Nxc3 6. bxc3 {B21: Sicilian: 2 f4 and Morra Gambit} g6 {LiveBook: 6 Games} 7. Ne5 Bg7 8. Bc4 e6 $146 ({Predecessor:} 8... O-O 9. O-O Nd7 10. Qe2 Nb6 11. Bb3 Qc7 12. a4 Bxe5 13. Qxe5 Qxe5 14. fxe5 {½-½ (43) Warakomski,T (2505)-Zaika,D (2213) Suwalki 2018}) 9. O-O O-O 10. Qe2 Qc7 11. d4 Nc6 12. Be3 b6 13. Rad1 Bb7 14. Nxc6 Bxc6 15. dxc5 bxc5 16. Qf2 Rfc8 17. Ba6 Bb7 18. Bxb7 Qxb7 19. Bxc5 Bxc3 20. Rd3 Bf6 21. Rfd1 Qc7 22. Bd4 Bxd4 23. Rxd4 Qb6 (23... Rab8 $17 24. Rd7 {[#]} Rb1 $1 {[%mdl 512]} 25. Rxb1 Qxd7) 24. h3 Rc6 25. Kh2 Rac8 26. Qh4 Rf8 (26... Rxc2 $17 {White must now prevent ...Qb2.} 27. Qf6 Rf8) 27. c4 $11 Qc5 28. Qf6 Qf5 29. Qe7 Qc5 (29... Rcc8 {with more complications.} 30. R1d2 a6 31. Qa3 a5 32. Qc3 Rfe8) 30. Qh4 Qf5 31. R1d2 Rcc8 32. Rb2 a5 33. a4 Qc5 34. Qf6 Qf5 35. Qxf5 gxf5 {[%mdl 4096] Endgame KRR-KRR} (35... exf5 $11 {remains equal.} 36. Rb5 Rfe8) 36. Rb5 $16 Rc7 37. c5 Ra8 38. Kg3 f6 39. Rd6 Kf7 40. Kf3 (40. Rdb6 $16) 40... Re7 (40... Rac8 $11 {keeps the balance.}) 41. Ke3 e5 (41... Rc7 $142) 42. Rbb6 exf4+ 43. Kxf4 Re4+ 44. Kxf5 Re5+ 45. Kf4 Rxc5 46. Rxf6+ Kg7 47. Rbc6 Rd5 48. Rfd6 Rf8+ 49. Ke4 Rg5 50. Rc7+ Kg8 51. g4 h5 {[%cal Bh7h5,Bh5h4,Bh4h3][%mdl 32]} 52. Rd5 ({White should try} 52. Ra6 $16) 52... Rxd5 53. Kxd5 $11 {next Ke4 is good for White. KR-KR} Rf3 54. Ke4 Rxh3 {The position is equal.} 55. g5 h4 56. Kf5 Rd3 57. Kg6 {[#] White wants to mate with Rc8+.} Rd6+ 58. Kh5 h3 59. Rc2 Kg7 60. Rb2 Rc6 61. Rd2 {Accuracy: White = 45%, Black = 53%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Pushkov, Nikolai"]
[Black "Proschmann, Tino"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2309"]
[BlackElo "2127"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,132,32,44,28,24,16,34,10,48,45,66,39,71,43,73,33,41,41,43,26,33,27,53,37,37,31,33,43,51,39,39,39,68,0,0,0,31,24,47,38,41,37,53,30,47,21,46,14,89,76,89,79,76,79,241,111,247,230,248,245,226,188,181,181,181,181,242,297,296,295,289,175,208,79,190,190,258,131,142,126,100,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-59,-58,-46,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 c5 2. c4 g6 3. e4 Bg7 4. d4 Qa5+ 5. Bd2 Qb6 6. Bc3 cxd4 7. Bxd4 Bxd4 8. Qxd4 Qxd4 9. Nxd4 d6 {A40: Unusual replies to 1 d4} (9... Nc6 10. Nb5 Kf8 11. Nd2 Nf6 12. f3 d6 13. Rc1 Bd7 14. Be2 a6 15. Nc3 e6 16. Kf2 Ke7 17. f4 Rac8 18. Rhd1 {0-1 (44) Triapishko,O (2500)-Zvjaginsev,V (2643) Sochi 2017}) 10. Nc3 Nf6 {LiveBook: 6 Games} 11. Be2 Nc6 {White has an edge.} 12. O-O-O $146 Bd7 13. b3 O-O 14. Kb2 a6 15. f3 Rfb8 16. Rhe1 Kf8 17. Bf1 Rd8 18. Nc2 Rab8 19. a4 a5 20. Ne3 Nb4 21. Rd2 b6 22. g3 h6 23. f4 Bc6 24. Bg2 Nd7 25. Ned5 Bxd5 26. Nxd5 (26. exd5 $14 Nc5 27. Re3) 26... Nxd5 $11 27. exd5 ({Don't play} 27. cxd5 b5 $17) 27... Nc5 28. Be4 Rb7 29. Bc2 Kg7 30. Rde2 Re8 31. Kc3 Kf6 32. Kd4 Ra7 33. h4 Kg7 (33... h5 $11 {keeps the balance.}) 34. h5 $16 Kf6 35. hxg6 fxg6 36. g4 g5 $2 (36... Rh8 $16) 37. Rf1 (37. Rh2 $18 {has better winning chances.}) 37... Kg7 (37... gxf4 $16 38. Rxf4+ Kg7) 38. fxg5 $18 hxg5 {[#]} 39. Rf5 $1 {[%cal Rf5g5]} e5+ 40. Ke3 Rh8 {intending ...Rh3+.} 41. Rxg5+ Kf8 {[#]} 42. Rh5 $1 {[%cal Rh5h8]} Kg7 (42... Kg8 {keeps fighting.} 43. Rxh8+ Kxh8 44. Rh2+ Kg8) 43. Rf2 {White threatens Rg5+ and mate.} Rxh5 44. gxh5 {[%mdl 4096] Endgame KRB-KRN} Rd7 45. Rf5 Rd8 46. Kf3 (46. Rf3 $18 {and White stays clearly on top.}) 46... Rh8 (46... Kh6 $16) 47. Rg5+ Kf7 48. Rg6 (48. Kg4 $18) 48... Rxh5 $16 {And now ...e4+! would win.} 49. Rxd6 e4+ 50. Bxe4 ({White should play} 50. Ke3 $16 Rh3+ 51. Kd4) 50... Rh3+ $11 51. Kg4 Nxe4 52. Rxb6 {KRN-KR} Rd3 53. Rb5 Nd2 54. Rxa5 Nxb3 55. Rb5 Nd2 56. Rc5 (56. Rb7+ $11 Kf6 57. a5) 56... Rd4+ $15 57. Kf5 Rxc4 58. Rxc4 {The position is equal.} Nxc4 {KN-KPP} 59. Ke4 Ke7 60. Kd4 Na5 61. Kc5 Kd7 62. Kb5 Nb3 63. Kb4 Nd4 64. Kc4 Nf5 65. Kc5 Kc7 66. a5 Kb7 {Accuracy: White = 37%, Black = 40%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Kozak, Antoni"]
[Black "Pechac, Jergus"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "2236"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,69,-13,41,-22,0,-54,-59,-45,-40,-56,6,0,0,-21,-20,-19,-14,-15,-13,-75,-76,-72,-68,-86,-57,-54,-51,-71,-58,-138,-85,-80,0,0,19,19,14,24,78,8,197,193,182,181,176,173,512,518]} 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c5 5. e3 cxd4 6. exd4 Be7 7. Bg5 O-O 8. Bd3 dxc4 9. Bxc4 b6 10. O-O Bb7 11. Re1 Nc6 12. a3 Nd5 {LiveBook: 15 Games. E57: Nimzo-Indian: Rubinstein: Main Line: 7...Nc6 8 a3 dxc4 9 Bxc4 cxd4} ({Better is} 12... Rc8 $11) (12... Rc8 13. Qd3 Nd5 14. Bxd5 Bxg5 15. Be4 g6 16. Rad1 Bf6 17. d5 exd5 18. Bxd5 Bg7 19. Nb5 Ba6 20. Qb3 Qf6 21. Nd6 Na5 22. Qa2 {1-0 (36) Ponkratov,P (2605)-Goganov,A (2564) Serpukhov 2018}) 13. Bd2 (13. Bxd5 $14 exd5 14. Bxe7 Nxe7 15. Qd3) 13... Bf6 $146 ({Predecessor:} 13... Nxc3 14. bxc3 Rc8 15. Qe2 Bf6 16. Ba2 Na5 17. Qd3 Bd5 18. Bb1 g6 19. Bh6 Re8 20. Ne5 {0-1 (35) Adams,N (2192)-Bednay,B (2169) Budapest 2006}) 14. Qa4 (14. Nxd5 $11 exd5 15. Bd3) 14... Nde7 $15 {Black is slightly better.} 15. Be3 Nf5 {[%cal Rc6d4]} (15... Nxd4 16. Nxd4 Bxd4 17. Rad1 $16) (15... Bxd4 16. Rad1 $16) 16. Rad1 Nxe3 ({Reject} 16... Ncxd4 17. Nxd4 Nxd4 18. Bxd4 $11) ({Wrong is} 16... Bxd4 $2 17. Bb5 $18) ({Black should play} 16... Na5 $15) 17. fxe3 a6 18. Bd3 g6 19. Be4 Rc8 20. d5 exd5 $1 21. Nxd5 (21. Bxd5 $11 Qe7 22. Qf4) 21... b5 $17 22. Qc2 Bg7 23. Qc5 Qe8 24. Bb1 Kh8 25. Qb6 Nd8 26. Nb4 (26. b4 $15) 26... Qe6 (26... Bxb2 $142 27. Rxd8 Rxd8 28. Qxb7 Bc3) 27. Rd6 Qg4 (27... Qe7 $17 28. Rd2 Ne6) 28. e4 $1 $11 f5 {[%cal Rf5e4] [#]} 29. Rxd8 $1 {[%mdl 512]} Rcxd8 30. Qxb7 {Black must now prevent e5.} Bxb2 (30... fxe4 $11 {remains equal.} 31. Bxe4 Bxb2) 31. e5 ({But not} 31. Qxa6 fxe4 32. Bxe4 Bc3 $11) (31. exf5 $16 gxf5 32. Nxa6) 31... Bd4+ $2 {[#]} (31... Bc3 $11 {and Black stays safe.} 32. Rf1 Qc4) 32. Kh1 $1 $18 {Hoping for Nc6.} Bc3 33. Rg1 Bxb4 34. axb4 Rfe8 $2 (34... Rde8 35. Qxa6 Qxb4) 35. Qxa6 {Precision: White = 44%, Black = 35%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Sindler, Michal"]
[Black "Xiang, Zeyu"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "2221"]
[BlackElo "2440"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,62,0,0,0,0,30,10,61,33,36,35,36,27,71,0,91,55,11,17,64,47,68,9,6,14,8,0,25,-92,-71,-102,-93,-493,-414,-1178,-1214,-1197,-1149,-29981,-29982,-29982,-29983]} 1. e4 c5 2. Nf3 e6 3. d3 d5 4. Nbd2 Nc6 5. g3 Nf6 6. Bg2 Be7 7. O-O O-O 8. Re1 Rb8 9. e5 {C00: French: Unusual White 2nd moves} Nd7 10. h4 (10. Nf1 b5 11. h4 d4 12. Bf4 Bb7 13. N1h2 c4 14. dxc4 bxc4 15. Nxd4 Nxd4 16. Qxd4 Bxg2 17. Kxg2 Nb6 18. Qxd8 Rfxd8 19. b3 {½-½ (41) Bailet,P (2528)-Stany,G (2491) Sautron 2017}) 10... Qc7 11. Nf1 {[%cal Bd2f1,Bf1h2,Bh2g4,Bg4h6][%mdl 32]} b5 12. Bf4 {LiveBook: 4 Games} a5 13. N1h2 Kh8 $146 ({Predecessor:} 13... a4 14. Ng4 Kh8 15. Ng5 Bxg5 16. hxg5 Ne7 17. Bf3 Bb7 18. Kg2 Ng6 19. Rh1 Nxf4+ 20. gxf4 f5 21. g6 fxg4 22. Rxh7+ Kg8 23. Rh8+ {1-0 (23) Berg,K (2427)-Husted,P (2184) Denmark 2002}) 14. Ng5 g6 ({Wrong is} 14... Ncxe5 $2 15. Qh5 $18) (14... Ndxe5 $2 15. Rxe5 $1 {[%mdl 512]} Bxg5 16. Rxg5 $16) (14... Bxg5 $11 15. hxg5 Bb7) 15. Ng4 h5 $1 {[%cal Rh5g4]} 16. Nh6 Bxg5 $1 17. hxg5 Bb7 {[#]} 18. g4 (18. Bxd5 $1 $16 {[%mdl 512]} b4 (18... exd5 19. e6) 19. Be4) 18... h4 (18... hxg4 $1 $11 {remains equal.} 19. c3 d4) 19. Bh2 d4 20. Qf3 Nb4 21. Qh3 $1 {[%cal Rh3h4]} Kg7 {aiming for ...Bxg2.} 22. Qxh4 ({White should try} 22. Bxb7 $1 $14 Qxb7 23. Re2) 22... Rh8 $1 $132 {[%mdl 2048] ...Bxg2 is the strong threat. Black has counterplay} (22... Nxc2 {[#]} 23. Nf5+ $1 {[%mdl 512]} exf5 24. Qh6+ Kg8 25. gxf5 $1 $16 {[%mdl 512]}) 23. Re2 Bxg2 24. Kxg2 Qc6+ 25. Kg1 (25. f3 $11) 25... Qf3 $17 26. Rae1 c4 27. Re4 $2 {[%mdl 8192]} (27. Qg3 $17 Qxg3+ 28. Bxg3) 27... Nxc2 28. Rc1 (28. Rf1 $142 Qxd3 29. Rf4) 28... cxd3 $19 29. Rf4 d2 {[%cal Rd2c1]} 30. Rxf3 dxc1=Q+ 31. Kg2 Ne1+ {[%mdl 64] Double Attack. Accuracy: White = 22%, Black = 63%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Schnabel, Ralf"]
[Black "Liu, Guanchu"]
[Result "0-1"]
[ECO "C05"]
[WhiteElo "2206"]
[BlackElo "2425"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,88,54,54,46,58,44,70,59,55,59,48,48,56,57,65,66,57,0,52,61,44,58,32,18,32,0,0,0,0,0,0,-6,-7,-36,0,0,0,0,0,-55,-62,-213,-172,-287,-326,-385,-368,-377,-338,-400,-377,-434,-382,-423,-419,-386,-405,-405,-394,-1391,-1492,-1414,-1385,-1304,-1185]} 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 b6 7. Nh3 Ba6 8. Bxa6 Nxa6 9. O-O Nc7 10. Qg4 {C06: French Tarrasch: 3...Nf6 4 e5 Nfd7 5 Bd3 main lines} c4 11. Nf4 g6 (11... b5 12. b3 g6 13. a4 a6 14. h4 h5 15. Qh3 Be7 16. bxc4 bxc4 17. Nf3 Rb8 {1-0 (59) Efimenko,Z (2689)-Socko,B (2635) Lublin 2012}) 12. Nf3 h6 13. h4 b5 {[#] LiveBook: 6 Games} 14. Qh3 $146 ({Predecessor:} 14. b3 Be7 15. a4 a6 16. Ba3 Bxa3 17. Rxa3 Qe7 18. Rfa1 {½-½ (29) Rozentalis,E (2528)-Westerberg,J (2464) Gothenburg 2015}) 14... a5 15. Ne2 Rg8 16. h5 g5 17. Nh2 f5 $1 18. exf6 $1 Nxf6 19. Ng4 Nxg4 20. Qxg4 Qd7 21. f4 (21. Bf4 $14 Bd6 22. Qg3) 21... Qh7 (21... O-O-O $1 $11) 22. f5 $14 exf5 23. Rxf5 Bd6 24. Bd2 Qd7 25. Bf4 {[%mdl 64] And now Bxd6 would win. Pin} (25. Nf4 {looks sharper.} O-O-O 26. Ng6 Rge8 27. Raf1 Re4 28. Qd1) 25... Rf8 $1 {[%cal Rf8f5]} 26. Rxf8+ $1 ({Don't blunder} 26. Bxd6 $2 Rxf5 27. Qg3 (27. Bxc7 $2 Rf1+ {[%mdl 64] Discovered Attack} 28. Rxf1 Qxg4 $19) 27... O-O-O $19) 26... Bxf8 27. Qxd7+ Kxd7 28. Bxc7 Kxc7 $11 {[%mdl 4096] Endgame KRB-KRN} 29. Ng3 Re8 30. Kf2 b4 31. Nf5 a4 32. cxb4 ({White should play} 32. Re1 $11 Rb8 33. cxb4) 32... Bxb4 $15 33. Rc1 $2 {[#]} (33. Rd1 $1 $15) 33... g4 $1 $19 34. Kg3 (34. a3 {only move.}) 34... Re4 35. Rc2 Kd7 36. Nxh6 {[#]} Be1+ $1 37. Kh2 Ke6 38. g3 Kf6 39. Kg2 Kg5 40. Nf7+ Kxh5 41. Nd6 Rxd4 42. Re2 $2 (42. Nb5 Rd3 43. Re2 Bxg3 44. Nc3) 42... Rd2 {Black is clearly winning.} 43. Rxd2 Bxd2 44. Nb5 Kg6 {Accuracy: White = 40%, Black = 85%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Schmid, Thomas"]
[Black "Kacharava, Nikolozi"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2201"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,68,6,16,-25,-28,-24,-9,-6,-12,-8,-7,-30,-26,-31,-5,-52,-31,-42,0,0,14,19,23,17,93,-23,-23,-21,-30,-23,-31,-54,-56,-71,-58,-71,-79,-89,-68,-87,-71,-75,-19,-363,-363,-361,-356,-355,-329,-677,-666,-29990,-29991]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O a5 8. Re1 c6 9. Bb3 {C41: Philidor Defence} (9. h3 Re8 10. Ba2 Bf8 11. Be3 Qc7 12. Ng5 Re7 13. f4 b6 14. fxe5 dxe5 15. d5 cxd5 16. exd5 {1-0 (16) Wang,H (2709)-Ivanchuk,V (2726) Huaian 2017}) 9... exd4 {LiveBook: 3 Games} 10. Qxd4 Nc5 11. Ba2 {Black has an edge.} Be6 12. Bxe6 Nxe6 13. Qd3 $146 ({Predecessor:} 13. Qc4 Re8 14. h3 Nc5 15. Bg5 Nfd7 16. Bf4 {0-1 (61) Van den Dikkenberg,E (2131)-Orlov,A (2501) Tilburg 2008}) 13... Ng4 14. h3 Ne5 15. Qe2 Bf6 16. Ra3 Re8 17. Be3 d5 18. exd5 Nf4 19. Qd1 Nc4 20. Rb3 Nxb2 (20... Bxc3 $11 21. Rxc3 Nxe3 22. Rcxe3 Rxe3 23. Rxe3 Nxd5) 21. Qb1 ({Better is} 21. Qc1 $16 Nxd5 22. Nxd5 (22. Qxb2 b5 $17) 22... Qxd5 23. Rxb2 Bxb2 24. Qxb2) 21... Bxc3 $1 $11 22. Rxc3 Nxa4 23. Ra3 {aiming for dxc6.} Nxd5 24. Rxa4 Nc3 $1 {[%csl LRa4,LRb1][%mdl 64] [#] Double Attack} 25. Qa1 Nxa4 26. Qxa4 b5 $36 {[%mdl 2048] Black is on the roll.} 27. Qg4 Qf6 28. Nd4 Rad8 {Strongly threatening ...Rxd4!} 29. c3 b4 (29... Rd5 $17) 30. cxb4 $2 {[%mdl 8192] [#]} (30. Rc1 $11) 30... Rxd4 $1 $19 {[%mdl 512]} 31. Bxd4 {[%cal Re1e8]} Rxe1+ 32. Kh2 {Qc8+ would kill now.} Qd6+ {[%mdl 64] Double Attack} 33. g3 $2 (33. f4 f6 34. Bc5) 33... f6 {( -> ...Qd5)} 34. Bc5 Qd5 {Accuracy: White = 28%, Black = 58%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Chernyak, Viktoria"]
[Black "Naumkin, Igor"]
[Result "0-1"]
[ECO "E42"]
[WhiteElo "2186"]
[BlackElo "2418"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,82,31,22,0,0,0,11,0,37,10,18,10,30,23,31,27,74,70,67,61,64,8,19,10,32,38,56,56,81,0,0,0,0,-8,0,-72,-51,-218,-217,-218,-225,-228,-231,-204,-25,-281,-213,-200,-200,-181,-162,-449,-450,-429,-426,-427,-404]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nge2 d5 6. a3 Bxc3+ 7. Nxc3 cxd4 8. exd4 dxc4 9. Bxc4 Nc6 10. Be3 O-O 11. O-O b6 12. Qf3 Bb7 13. Bd3 Qd7 {E42: Nimzo-Indian: Rubinstein: 4...c5 5 Ne2} 14. Qh3 Ne7 {LiveBook: 28 Games} ({Don't go for} 14... Nxd4 $2 15. Rfd1 $18) 15. Rad1 Ng6 {[#] The position is equal.} 16. Rfe1 $146 ({Predecessor:} 16. f4 Nd5 17. f5 exf5 18. Bxf5 Qc7 19. Nxd5 Bxd5 20. Rc1 Qe7 21. Qg3 {½-½ (34) Sadler,M (2650)-Karpov,A (2735) Monte Carlo 1998}) 16... Nd5 17. Bc1 f5 18. Bb5 Bc6 19. Bf1 h6 20. Qg3 Rf6 21. Bd2 Nh8 22. Nxd5 Bxd5 23. Rc1 {And now Rc7 would win.} Rg6 24. Qh3 (24. Rc7 $14 Qd8 25. Qc3) 24... Nf7 $11 25. Rc3 Rc8 26. Rec1 Rxc3 27. Qxc3 Qe7 28. Qc7 (28. Bf4 $16) 28... Qh4 $1 {[%cal Rh4e4] Hoping for ...Qe4.} 29. Bf4 ({Avoid the trap} 29. Qxa7 $2 Qe4 $19) 29... Qg4 $1 {[%cal Rd5g2]} 30. Bg3 Qxd4 31. Qxa7 (31. b4 $11) 31... e5 $17 {Strongly threatening ...f4.} 32. Qd7 $2 (32. Qc7 $15 f4 33. Bh4) 32... f4 $1 $19 33. Bh4 Kh7 34. Qf5 Nd6 {[%cal Bf7d6,Bd6f5,Bf5d4,Bd4f3][%mdl 32]} ({Not} 34... Qxb2 35. Rb1 $17) 35. Qc2 {[#]} Be4 $2 ({Better is} 35... Bf3 $1 $19 {aiming for ...Qd5.} 36. Re1 Qd5) 36. Qc3 $2 {[%mdl 8192]} (36. Qb3 $1 $11 {and White has nothing to worry.}) 36... Nf5 37. Qxd4 Nxd4 38. Kh1 {[#]} Nf3 $1 {[%cal Rf3h4][%mdl 512]} 39. Bd3 $2 (39. Bd8 Nd2 40. f3 Nxf3 41. Rd1) (39. gxf3 Bxf3+) 39... Bxd3 {Black is clearly winning.} 40. gxf3 Be2 {[%cal Re2f3]} 41. Rc3 Rd6 {Accuracy: White = 30%, Black = 63%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Pniaczek, Marek"]
[Black "Krivonosov, Oleg"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2146"]
[BlackElo "2390"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,76,45,28,42,35,43,10,28,23,37,0,45,16,10,26,18,0,44,0,0,0,0,0,0,0,10,13,11,0,0,0,0,0,0,-76,-77,-102,-17,-51,-39,-186,-181,-156,-168,-183,-134,-189,-196,-199,-196,-295,-304,-528,-435,-443,-437,-414,-307]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. Nc3 Nf6 7. Qe2 {C45: Scotch Game} d6 8. Be3 Be6 9. O-O-O Qe7 10. g3 O-O-O 11. Bg2 {LiveBook: 13 Games} Kb8 12. Rhe1 Rhe8 13. Kb1 $146 ({Predecessor:} 13. h3 Bxb3 14. axb3 Bxe3+ 15. Qxe3 {½-½ (54) Karjakin,S (2786)-Ponomariov,R (2733) Zug 2013}) 13... Qf8 14. Bxb6 axb6 15. Nd4 Bd7 16. Qf1 Nxd4 17. Rxd4 Bc6 18. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} g5 19. b5 Bd7 20. f4 gxf4 21. gxf4 d5 {And now ...dxe4 would win.} 22. e5 Ne4 23. Bxe4 dxe4 24. Red1 ({Of course not} 24. Rexe4 Bf5 $15) 24... Bg4 25. Rxd8+ Rxd8 26. Rxd8+ Qxd8 27. Nxe4 (27. Qf2 $1 $11 {keeps the balance.}) 27... Qd4 $36 {[%mdl 2048] Black is on the roll.} 28. Qe1 h6 (28... Be6 $17 {Threatening ...Qa4.} 29. a3 Qc4) 29. Ng3 Qxf4 {Threatens to win with ...h5.} 30. Kb2 ({White has to play} 30. Qe4 $15 Qg5 31. a4) 30... Qc4 31. Qe3 Qxb5+ 32. Kc1 Qc6 33. Qd4 (33. Qe4 $17 Qd7 34. Ne2) 33... Be6 $19 34. Qd8+ Ka7 35. Qe7 (35. Qd4 $142) 35... Qc3 36. Kb1 $2 {[#]} (36. Qh4) 36... Qe1+ 37. Kb2 Qxe5+ 38. c3 Qb5+ {Accuracy: White = 33%, Black = 45%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Petersen, Peter Birk"]
[Black "Low, Zhen Yu Cyrus"]
[Result "0-1"]
[ECO "B57"]
[WhiteElo "2144"]
[BlackElo "2385"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,132,34,70,29,29,29,27,24,35,15,42,46,54,38,54,47,54,13,51,55,56,57,55,37,47,47,56,47,53,34,62,56,65,62,74,62,100,83,87,59,57,57,55,43,81,42,57,48,57,50,69,45,45,47,43,32,32,31,56,34,61,27,59,54,58,47,58,53,47,51,47,53,58,59,65,38,68,16,43,44,97,90,150,140,132,149,149,153,143,122,150,0,142,0,134,0,151,141,184,0,100,68,78,69,69,0,0,0,0,-271,-268,-422,-422,-407,-392]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Bd7 7. Bb3 g6 8. Be3 Ng4 {B57: Classical Sicilian: Sozin with 6...Qb6} (8... Bg7 9. f3 O-O 10. Qd2 Na5 11. h4 h5 12. O-O-O Rb8 13. g4 b5 14. gxh5 Nxh5 15. Rhg1 Nc4 16. Bxc4 bxc4 17. Bh6 Qb6 18. b3 cxb3 19. axb3 Qa5 20. Kb2 {0-1 (33) Gao,R (2561)-Xu,X (2581) Tianjin 2018}) 9. Nxc6 bxc6 10. Qf3 Nf6 {LiveBook: 4 Games. White is slightly better.} 11. h3 Bg7 12. Rd1 $146 ({Predecessor:} 12. g4 O-O 13. O-O-O Qa5 14. Kb1 Rab8 15. Rhe1 Be6 16. Bd2 {0-1 (54) Tomcsanyi,P (2235)-Wittmann,W (2370) Oberwart 1996}) 12... O-O 13. O-O Qc7 14. Qe2 Rab8 15. Rfe1 Rfd8 16. Bf4 {Strongly threatening e5.} e5 17. Bg5 Be6 18. Rd3 h6 19. Bxf6 Bxf6 20. Bxe6 fxe6 21. Qg4 Kg7 22. b3 Qe7 23. Rg3 Qf7 24. Qe2 Kh7 25. Rd1 Rd7 26. Na4 {[%cal Bc3a4,Ba4c5,Bc5d3,Bd3e1,Be1f3][%mdl 32]} Bg7 27. Rgd3 Bf8 28. Nc5 Rdd8 29. Rf3 Qe7 30. Nd3 Bg7 31. Ne1 d5 32. Rfd3 Bf6 33. Nf3 Rd7 34. Rc3 Rc7 35. g3 Qd6 36. h4 Rf8 37. Kg2 Rcf7 38. Rf1 Bg7 39. Re3 Re8 40. Rd3 Qa3 41. c3 Ref8 42. Nh2 a5 43. Rf3 a4 44. Rxf7 Rxf7 45. Qc2 axb3 46. axb3 {[%cal Ba2b3,Bb3b4][%mdl 32]} d4 47. Nf3 Qc5 48. c4 (48. Rd1 $14) 48... Qa3 49. Rb1 Ra7 (49... c5 $14) 50. Ne1 $16 Qf8 {[#]} (50... c5 $142) 51. b4 $1 Qa8 52. Nd3 Ra3 53. Rb3 Ra2 54. Rb2 Ra3 55. Rb3 (55. Nc5 $16) 55... Ra1 (55... Ra2 $11 56. Rb2 Ra3) 56. Rb1 (56. Nc5 $16) 56... Ra2 (56... Ra3 $1 $11 {remains equal.}) 57. Rb2 (57. Qd1 $16) 57... Ra7 $2 ({Black should try} 57... Ra3 $11) 58. Nc5 Bf8 59. Nd3 $2 (59. Nxe6 $18 Be7 60. Qe2) 59... Ra3 (59... Bg7 $1 $11) 60. Nxe5 c5 {[#] aiming for ...Bg7.} 61. Qe2 {Hoping for Qg4.} cxb4 62. Rd2 ({Better is} 62. Qg4 $14 Qe8 63. Qf4) 62... Bg7 $11 63. Nd3 b3 64. f3 $2 {[%mdl 8192]} (64. Qf3 $11 {and White is okay.}) 64... Ra2 $19 65. e5 (65. c5 {might work better.}) 65... Rxd2 66. Qxd2 Qa2 {Accuracy: White = 51%, Black = 38%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Burnett, Andrew"]
[Black "Gschnitzer, Oswald"]
[Result "1/2-1/2"]
[ECO "A43"]
[WhiteElo "2140"]
[BlackElo "2370"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,113,23,18,13,24,17,20,16,20,0,0,0,12,15,7,-7,-7,-7,-7,-14,0,-2,0,0,0,0,12,0,0,0,0,0,0,0,0,-251,-254,-430,-413,-318,-110,-104,-102,-100,-92,-114,-105,-121,-101,-106,-104,-100,-100,-97,-95,-95,-95,-95,-58,-58,-58,-58,-58,-58,-58,-58,-58,-58,-20,-27,-24,-25,-29,-29,-29,-53,0,-8,-8,-8,-8,-32,0,0,0,0,0,-8,-8,-8,-8,-8]} 1. d4 Nf6 2. Nf3 c5 3. d5 g6 4. Nc3 d6 5. e4 Bg7 6. Bb5+ Nfd7 7. a4 Na6 8. O-O {A43: Schmid Benoni} Nc7 (8... O-O 9. Re1 Nc7 10. Bf1 b6 11. Bf4 Bb7 12. Qd2 Ne5 13. Nxe5 dxe5 14. Be3 Qd6 15. a5 f5 16. f3 Kh8 17. Red1 Bf6 18. Ra3 Rfd8 {½-½ (72) Sjugirov,S (2665)-Novikov,M (2513) Kolomna 2016}) 9. Be2 O-O 10. Re1 a6 11. Bf4 Rb8 12. Qd2 b5 {LiveBook: 7 Games} 13. axb5 axb5 14. Bh6 b4 15. Bxg7 Kxg7 16. Nd1 Nf6 17. Bc4 {[#]} e5 $146 (17... Bg4 {looks sharper.} 18. Qf4 Bxf3 19. Qxf3 e6 20. Ne3 exd5 21. exd5 Re8) ({Predecessor:} 17... Bg4 18. Qe2 {0-1 (36) Sherbakov,V (2385)-Kuzmin,G (2545) St Petersburg 1995}) 18. dxe6 Bxe6 19. Bxe6 Nxe6 20. e5 dxe5 {next ...e4 is good for Black.} 21. Qxd8 Rfxd8 22. Nxe5 Ra8 23. Ne3 Nd4 24. Kf1 Ne4 25. f3 Nd6 26. Nd3 Rxa1 27. Rxa1 N6f5 28. Nxf5+ Nxf5 $11 {[%mdl 4096] Endgame KRN-KRN} 29. Re1 $2 {[%mdl 8192] [#]} (29. Ra5 $11 {and White has nothing to worry.}) 29... b3 $1 $19 {[%mdl 512]} 30. Nxc5 $2 (30. g4 {keeps fighting.} Nd4 31. Nxc5 bxc2 32. Kf2) (30. cxb3 Rxd3) 30... bxc2 31. Nb3 Rb8 $2 (31... Rd1 $19 {has better winning chances.} 32. Nc1 Kf6) 32. Nc1 $17 Rxb2 {Hoping for ...Nd4.} 33. Ke2 Rb7 34. Kd3 Rc7 35. Re2 Kf6 36. f4 Rd7+ 37. Kc3 Rd1 38. Kxc2 Rh1 39. Kd2 Rxh2 {White must now prevent ...Ng3.} 40. g4 Nd4 41. Rxh2 Nf3+ {[%mdl 64] Double Attack} 42. Ke3 Nxh2 $15 {KN-KN} 43. g5+ Kf5 44. Ne2 Kg4 45. Ke4 Nf3 46. Nc3 Nd2+ 47. Ke5 Nc4+ 48. Ke4 Nb6 49. Nd1 Nc4 50. Nc3 Nd6+ 51. Ke5 Nf5 52. Nd5 h5 {aiming for ...h4.} (52... Kf3 $5 {[%cal Rf5e3]}) 53. gxh6 $1 {The position is equal.} Nxh6 54. Kf6 Kf3 55. Ne7 Kxf4 {[#]} 56. Nxg6+ $1 {[%mdl 512]} fxg6 57. Kxg6 {Accuracy: White = 69%, Black = 64%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Michalczak, Thomas"]
[Black "Lin, Yi"]
[Result "0-1"]
[ECO "D86"]
[WhiteElo "2139"]
[BlackElo "2359"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,50,33,53,-32,-32,-47,-43,-38,-38,-43,-45,-51,-44,-56,-42,-89,-104,-87,-63,-56,-32,-98,-101,-122,-108,-126,-106,-470,-467,-454,-450,-466,-456]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 O-O 9. O-O Qa5 10. Be3 Nd7 {LiveBook: 7 Games. D87: Exchange Grünfeld: Classical Line: Variations without ...cxd4} 11. dxc5 $146 (11. a4 $14) ({Predecessor:} 11. Qc1 cxd4 12. cxd4 Nb6 13. Bb3 Bg4 14. f3 Bd7 15. Bh6 Rac8 16. Qf4 Bxh6 17. Qxh6 Nc4 18. Nf4 {1-0 (35) Wagner,D (2424)-Dvirnyy,D (2515) Sibenik 2012}) 11... Nxc5 $15 12. f3 Rd8 {Black is slightly better.} 13. Qc2 Be6 14. Bxe6 Nxe6 15. Rab1 b6 16. Rfd1 Rac8 17. c4 Qa6 18. Rxd8+ Rxd8 19. Rb5 Rc8 20. a4 ({White should try} 20. Qb3 $15) 20... Nc7 $17 {[%cal Be6c7,Bc7e8,Be8d6,Bd6b7][%mdl 32]} 21. Rb1 {[#]} Ne8 $1 22. c5 bxc5 23. Bxc5 $2 {[%mdl 8192]} (23. Rc1 $17 {is a better chance.}) 23... Nd6 $19 {Black is clearly winning.} 24. Kf1 Qc6 25. Rc1 Nb7 {Precision: White = 27%, Black = 71%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Shyam Prasad Reddy K"]
[Black "Schmidt-Schaeffer, Sebastian"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2137"]
[BlackElo "2350"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,68,20,56,16,16,-8,16,0,10,0,2,5,0,10,14,0,22,0,15,14,24,12,12,10,30,34,28,35,40,37,33,7,58,7,30,40,33,31,27,23,50,33,29,0,0,0,0,0,0,0,0,0,17]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O a5 8. h3 c6 9. Re1 Qc7 {LiveBook: 107 Games} 10. d5 {C41: Philidor Defence} (10. Be3 Nb6 11. Ba2 Nfd7 12. Qe2 Bf6 13. d5 Be7 14. Rad1 Nf6 15. Nd2 Bd7 16. Nc4 Nxc4 17. Qxc4 Rac8 18. Qb3 cxd5 {1-0 (80) Howell,D (2644)-Maghsoodloo,P (2584) Doha 2016}) 10... Nb6 11. Ba2 $146 ({Predecessor:} 11. Bf1 cxd5 12. exd5 Bd7 13. Be3 Nc4 14. Bxc4 Qxc4 15. Qe2 Rfc8 16. Qxc4 Rxc4 {1-0 (53) Cemborain Oricain,A (1987)-Suuronen,P (1916) Calvia 2010}) 11... Bd7 12. Be3 cxd5 {...d4 is the strong threat.} 13. Bxb6 $1 Qxb6 14. Nxd5 Nxd5 15. Bxd5 Rac8 16. b3 Be6 17. Re2 {[%cal Be1e2,Be2d2,Bd2d3][%mdl 32]} Rc5 18. Rd2 Qb4 19. Bxe6 fxe6 20. c4 Rc6 21. Rd3 Qc5 22. Qe2 Bd8 23. Ra2 {[%cal Ba1a2,Ba2d2,Bd2d1][%mdl 32]} h6 24. Rad2 Kh7 (24... Bb6 $11) 25. Nh2 (25. h4 $14) 25... Bg5 26. Rd1 Rc7 27. Nf3 ({Wrong is} 27. Rxd6 $2 {[#]} Rxf2 $1 {[%mdl 512]} 28. Qxf2 Be3 $19) 27... Be7 28. g3 Rcc8 {[%cal Bc7c8,Bc8f8,Bf8f7][%mdl 32]} 29. Kg2 Rf7 30. Nh2 Rcf8 {The position is equal.} 31. Rf3 Bd8 32. Rdd3 Bb6 33. Rxf7 Rxf7 34. Rf3 Qc7 {Accuracy: White = 52%, Black = 41%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "2"]
[White "Kaderabek, Jiri"]
[Black "Cerveny, Petr"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2130"]
[BlackElo "2318"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,50,24,47,24,24,0,0,-10,0,-20,-16,-37,-25,-52,-10,-8,5,-92,-87,-112,-106,-222,-232,-367,-370,-369,-371,-372,-258,-527,-507,-928,-884]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Bg5 Nbd7 9. O-O O-O 10. a4 b6 {LiveBook: 30 Games} 11. Nd5 {B92: Sicilian Najdorf: 6 Be2} (11. Nd2 Bb7 12. Bc4 h6 13. Bh4 Qc7 14. Qe2 Rfc8 15. Rfd1 Nf8 16. Bxf6 Bxf6 17. Nd5 Qd8 18. Nf1 Ng6 {1-0 (50) Yu,Y (2750)-Atabayev,S (2437) Ashkhabad 2017}) 11... Bb7 {Threatens to win with ...Nxd5.} 12. Bxf6 Nxf6 13. Nxf6+ {The position is equal.} Bxf6 14. Qd3 $146 ({Predecessor:} 14. Bf3 Rc8 15. Qd3 Qc7 16. c3 Be7 17. Rfd1 Rcd8 18. c4 Bc6 {½-½ (57) Mihopoulos,K (1968)-Stathopoulos,I (2122) Nikea 2011}) 14... d5 15. a5 dxe4 16. Qe3 b5 {Black wants to play ...Bg5.} 17. Nc5 Qc7 18. Nxe4 {[#]} (18. c4 $11 {remains equal.}) 18... Be7 $1 $17 {[%cal Bf6e7,Be7d6,Bd6c5][%mdl 32]} ({And not} 18... Qxc2 19. Bd3 $14) 19. Bf3 f5 $36 {[%mdl 2048] White is under strong pressure.} ({Don't do} 19... Qxc2 {[#]} 20. Nf6+ $1 {[%mdl 512]} Bxf6 21. Bxb7 $11) 20. Nd2 (20. Ng5 $17 Bxg5 21. Qxg5) 20... e4 $19 21. Qb3+ (21. Be2 $142) 21... Kh8 22. Be2 Bd6 23. h3 Rae8 24. c4 $2 {[#]} (24. Kh1 {only move.}) 24... e3 $1 {[%mdl 512]} 25. fxe3 (25. Bf3 $142 exd2 26. Bxb7 Qxb7 27. cxb5) 25... Bc5 {Precision: White = 20%, Black = 76%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Xiang, Zeyu"]
[Black "Oboladze, Luka"]
[Result "1/2-1/2"]
[ECO "E10"]
[WhiteElo "2440"]
[BlackElo "2295"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,61,27,44,44,52,24,22,13,88,79,87,22,22,32,31,23,35,13,11,7,6,6,6,12,12,8,9,13,8,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 (5... Be7 6. Bg2 O-O 7. O-O Nbd7 8. Nc3 c6 9. Bf4 dxc4 10. e4 Re8 11. a4 b6 12. d5 exd5 13. exd5 Bb7 14. a5 bxa5 15. d6 Bf8 16. Nd2 Nd5 17. Nxd5 cxd5 18. Nxc4 dxc4 19. Bxb7 {½-½ (42) Nakamura,H (2777)-Karjakin,S (2773) Saint Louis 2018}) 6. Bg2 {E01: Catalan: Early deviations} O-O 7. O-O Nbd7 8. Qc2 c6 9. Bg5 h6 10. Bxf6 Qxf6 {LiveBook: 7 Games} 11. Nbd2 c5 12. dxc5 $146 (12. cxd5 {keeps more tension.} exd5 13. e4 cxd4 14. exd5 Nc5 15. Qc4) ({Predecessor:} 12. cxd5 exd5 {1-0 (28) Munoz Galvez,J (2257)-Tovio,I (2285) Mosquera 2014}) 12... Nxc5 13. b4 Ne4 (13... Nd7 $11) 14. Nxe4 $16 dxe4 {[#]} 15. Qxe4 (15. Nd2 $1 $16) 15... Bxb4 $11 16. Rab1 Bd6 17. Rfd1 Qe7 18. Ne5 Qc7 {The position is equal.} 19. Nd3 Rb8 20. c5 Bxc5 21. Rdc1 b6 22. Nxc5 bxc5 23. Rxb8 Qxb8 24. Rxc5 Ba6 25. Qc2 Rc8 {[#] Threatens to win with ...Rxc5.} 26. Rxc8+ Qxc8 27. Qxc8+ Bxc8 28. f4 f6 29. Kf2 Kf7 30. Ke3 Ke7 31. Kd4 {Accuracy: White = 69%, Black = 72%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Neuman, Petr"]
[Black "Hesse, Henrik"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2428"]
[BlackElo "2166"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,47,-18,22,18,15,0,134,137,131,129,152,134,124,86,97,99,92,89,141,131,150,128,178,145,176,164,195,178,181,189,305,280,276,295,381,357,766,753,2429,2247]} 1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. c3 d5 5. Nbd2 dxe4 (5... Bc5 6. Be2 O-O 7. O-O Re8 8. b4 Bb6 9. a4 a5 10. b5 Nb8 11. h3 dxe4 12. dxe4 Nbd7 13. Qc2 Bc5 14. Nc4 Qe7 15. Bg5 {0-1 (35) Caruana,F (2822)-Aronian,L (2767) chess.com INT 2018}) 6. dxe4 {C44: Ponziani Opening and Scotch Gambit} Bc5 7. b4 Bxf2+ (7... Bd6 $11) 8. Kxf2 $16 {And now Qc2 would win.White is clearly better.} Nxe4+ 9. Kg1 Nxc3 10. Qb3 Nd5 11. Bb2 $146 {[%cal Bc1b2,Bb2e5,Be5g3][%mdl 32] Black must now prevent b5.} ({Predecessor:} 11. b5 Nce7 12. Bc4 Be6 13. Ba3 Nf4 14. Bxe6 Nxe6 {1-0 (57) Budnikov,O (2408)-Shton,R (2079) Mukachevo 2017}) 11... O-O 12. b5 Na5 13. Qa4 $36 {[%mdl 2048] White has strong initiative.} c6 (13... b6 $142) 14. Bxe5 Bd7 15. Qd4 {Strongly threatening bxc6.} f6 16. Bg3 Be6 17. h3 Qd7 18. Nb3 Nxb3 19. axb3 b6 (19... cxb5 {might work better.} 20. Rxa7 Rxa7 21. Qxa7 Nc3) 20. bxc6 $18 Qxc6 21. Kh2 Rad8 22. Rxa7 Qc2 $2 (22... Rd7) 23. Bd3 Qxb3 {[#]} 24. Bxh7+ $1 {[%mdl 512] Accuracy: White = 87%, Black = 25%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Liu, Guanchu"]
[Black "Chkhaidze, Nikoloz"]
[Result "1/2-1/2"]
[ECO "C48"]
[WhiteElo "2425"]
[BlackElo "2290"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,81,-11,-23,-13,-23,0,-24,-12,-12,-14,-18,-10,-26,0,0,0,0,14,0,0,0,0,0,0,0,0,-17,-16,-22,-13,-12,-7,-8,-18,-84,-35,-31,-30,-71,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Ba4 Bc5 6. d3 O-O 7. O-O d6 8. Nxd4 Bxd4 9. Be3 {LiveBook: 5 Games. C48: Four Knights: 4 Bb5, replies other than 4...Bb4} Bxe3 10. fxe3 Bd7 $146 ({Predecessor:} 10... Be6 11. Bb3 c6 12. Qd2 b5 13. Rf3 a5 14. Bxe6 fxe6 15. Raf1 d5 16. exd5 exd5 {0-1 (36) Lein,A (2398)-Onischuk,A (2655) Chicago 2002}) 11. Bb3 Be6 12. Bxe6 fxe6 13. Qe2 Qe7 14. d4 Nd7 15. Qb5 exd4 16. exd4 Nb6 17. Ne2 Rxf1+ 18. Rxf1 Rf8 19. Rxf8+ Kxf8 20. c3 e5 21. Qd3 Nd7 22. Ng3 g6 23. Qe3 a5 24. d5 Nf6 25. b4 (25. Nh1 $11) 25... axb4 26. cxb4 Qd7 27. Qf2 Kg7 ({Black should play} 27... Ke7 $17 28. Qc2 c6 29. dxc6 bxc6) 28. Qc2 $1 $11 {The position is equal.} h5 29. h3 h4 30. Nf1 c6 31. dxc6 bxc6 32. a4 Qb7 33. Qc4 Qa7+ 34. Kh2 Qf2 35. a5 Qf4+ 36. Kg1 Nxe4 {[#] Hoping for ...Qf2+.} 37. Qxc6 Qf2+ 38. Kh2 {Strongly threatening Qb7+.} Qf4+ 39. Kg1 Qf2+ 40. Kh2 {[#] Black must now prevent Qb7+.} Qf4+ 41. Kg1 {Accuracy: White = 61%, Black = 50%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Naumkin, Igor"]
[Black "Visser, Henk-Jan"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2418"]
[BlackElo "2271"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,95,9,16,0,12,-6,18,12,60,58,75,56,151,131,186,194,197,211,249,239,260,238,271,257,272,254,292,282,447,303,302,300,292,273,382,224,256,222,215,204,284,89,297,259,256,143,184,165,180,148,174,182,221,226,353,190,697,695,632,552,29968,29967,29964,29961,6494,6136,5106,1286,29972,29967,29967,29968,29962,6107,29981,29982,29975,29970]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 c5 5. Bxb4 cxb4 6. e3 O-O 7. Nbd2 b6 8. Bd3 Bb7 9. O-O d6 10. Qc2 {E11: Bogo-Indian} Qe7 {LiveBook: 3 Games} 11. Ng5 {[%cal Rg5h7]} g6 12. f4 $146 {The position is equal.} ({Predecessor:} 12. Nge4 Nfd7 13. f4 Nc6 14. Rae1 Rae8 15. Nf3 f5 16. Neg5 e5 17. c5 bxc5 18. dxe5 {0-1 (37) Berczes,D (2544)-Romanov,E (2625) Cappelle-la-Grande 2012}) 12... Nc6 13. Rae1 Ne8 14. Ndf3 Ng7 15. d5 exd5 (15... Na5 $14) 16. cxd5 $16 b3 (16... Na5 $16) 17. Qxb3 $18 Na5 18. Qd1 {Threatens to win with b4.} Rac8 19. e4 Nh5 20. Nh3 Rc7 21. b3 {[%cal Bb2b3,Bb3b4][%mdl 32]} Bc8 22. f5 Nf6 23. Qd2 Kh8 (23... Nb7 $142 24. b4 a5) 24. Qb2 Kg8 25. Nf2 Nb7 26. b4 Nd7 27. Ba6 (27. Nd4 $142) 27... Ne5 28. Nxe5 dxe5 29. Bxb7 Bxb7 30. Qd2 $2 (30. Ng4 $18) 30... f6 $2 (30... gxf5 $16 31. d6 Qd8) 31. d6 Qd8 {[#]} 32. Rd1 ({Better is} 32. fxg6 $1 $18 {And now Ng4 would win.} hxg6 33. Re3) 32... Rg7 33. fxg6 Rxg6 34. Qc3 Rf7 35. Qc4 f5 36. d7 Kf8 (36... Kg7 {is a better defense.} 37. Qc3 Re7) 37. Qb5 (37. Nd3 $142 Bxe4 38. g3 Bxd3 39. Rxd3) 37... Rfg7 $2 (37... Re7 38. Qd3 f4) 38. Qxe5 {[#] aiming for Ng4!} Rxg2+ 39. Kh1 R2g5 40. Nh3 Rh5 41. Rxf5+ Rxf5 42. Qxf5+ Rf7 43. Qe5 (43. Qe6 $142 Bxe4+ 44. Qxe4 Rxd7 45. Qf5+ Ke8 46. Qe6+ Qe7 47. Qg8+ Qf8 48. Qxf8+ {[%mdl 64] Overworked Piece} Kxf8 49. Rxd7) 43... Rxd7 44. Qh8+ Ke7 45. Qxh7+ Ke8 46. Qh8+ Ke7 47. Qe5+ Kf8 48. Rf1+ {Accuracy: White = 58%, Black = 31%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Kacharava, Nikolozi"]
[Black "Olsarova, Karolina"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2397"]
[BlackElo "2263"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,135,6,23,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-2,18,15,12,21,91,88,58,39,50,36,44,60,80,24,73,24,24,24,33,24,24,24,25,25,34,34,41,26,105,99,121,117,142,154,147,152,204,202,161,58,66,73,73,73,203,176,302,302,302,302,285,289,289,292,295,284,284,282,277,256,277,272,263,262,267,222,219,131,222,243,227,186,186,186,544,533,527,513,479,490,1555,1462,2764,2538,5820,4555,6075,5715,29980,29980,29981,29982,29979,29980]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. O-O d5 7. exd5 Nxd5 8. Re1 Bg4 9. Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Nb6 10. h3 (10. Bb5 Bd6 11. h3 Bh5 12. Ne4 Re8 13. Bg5 f6 14. Be3 a6 15. Bxc6 bxc6 16. Ng3 Bf7 17. c4 Bb4 18. Re2 Bf8 19. b3 c5 {0-1 (89) Nakamura,H (2777)-Grischuk,A (2766) Saint Louis 2018}) 10... Bh5 11. b4 Be7 {LiveBook: 16 Games} 12. Bb3 (12. g4 {looks sharper.} Bg6 13. b5 Na5 14. Nxe5 Bf6 15. Nxg6 hxg6 16. Bb2) 12... Qxd3 13. Nxe5 {[%mdl 64] Discovered Attack} Bxd1 14. Nxd3 Bxb3 15. axb3 {Threatens to win with b5.} a6 16. Ne4 Nd5 17. Nf4 $146 Rad8 18. Rd1 Nf6 19. Nxf6+ $1 Bxf6 20. Nd5 $1 Be5 21. Be3 Bd6 22. Bc5 $36 {[%mdl 2048] White fights for an advantage.} Bxc5 23. bxc5 Ne5 (23... Rc8 $11) 24. f4 $16 Ng6 25. g3 c6 26. Nb6 Ne7 27. Kf2 f5 28. Rd6 (28. Rac1 $16) 28... Nc8 29. Nxc8 Rxc8 {[%mdl 4096] Endgame KRR-KRR} 30. Re1 {With the idea Re7.} Rf7 31. Re5 g6 32. Ke3 Kg7 33. Kd4 Ra8 34. Kd3 a5 35. Kc2 Rc7 (35... Kf8 $1 $11 {keeps the balance.}) 36. Kb2 Kf7 37. Ka3 Re7 38. Rxe7+ Kxe7 {KR-KR} 39. c4 Ra7 (39... Rc8 $16 40. Ka4 Ra8) 40. h4 $18 Ra8 {[#]} 41. Ka4 (41. h5 $1 $18 {[%mdl 512]}) 41... Ra7 $1 $14 42. Rd1 Kf6 43. Rd8 Ke6 (43... Kg7 $16) 44. Ka3 $18 Ke7 (44... h6 {keeps fighting.} 45. Rd6+ Kf7) 45. Rh8 h5 46. Rh7+ Kf6 {Now ...Ke6 and Black clings on.} 47. Rd7 Ke6 48. Rd1 Kf6 49. Kb2 Ke7 50. Rd6 Kf7 51. Ka3 Kg7 52. Ka2 Kf7 53. Kb2 Kg7 54. Rd1 Kf6 55. Kc3 ({Better is} 55. Rd7 $18) 55... Kf7 (55... a4 $16) 56. Rd7+ Ke6 57. Rd6+ Kf7 {[#]} 58. Kd4 $1 Kg7 $2 (58... a4 59. bxa4 Rxa4) 59. Ke5 a4 60. bxa4 Rxa4 61. Rd7+ {[%mdl 64] Double Attack} Kh6 (61... Kf8 $142 62. Rxb7 Rxc4) 62. Rxb7 Rxc4 63. Kd6 Rc3 64. Kxc6 Rxg3 65. Rb4 Rh3 66. Kd5 {White mates.} Rd3+ 67. Rd4 Ra3 68. c6 {Accuracy: White = 72%, Black = 40%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Krivonosov, Oleg"]
[Black "Jaroch, Karol"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2390"]
[BlackElo "2259"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,47,70,66,117,117,113,118,154,133,160,117,280,270,709,710,2169,5086,2377,2338,2062,2085,29982,29983,29983,29984,29981,29982]} 1. Nf3 e6 2. c4 Nf6 3. g3 Be7 4. Bg2 O-O 5. O-O d5 6. d4 Nbd7 7. Qc2 c5 8. Rd1 {E08: Closed Catalan: Main Line: 7 Qc2} (8. cxd5 exd5 9. Nc3 cxd4 10. Nxd4 Nc5 11. Bf4 Ne6 12. Rad1 Nxf4 13. gxf4 Bb4 14. Ndb5 Qb6 15. Qb3 Bxc3 16. Nxc3 Qa6 {½-½ (53) Li,C (2745)-Markov,M (2390) Ashkhabad 2017}) 8... b6 9. cxd5 exd5 10. Nc3 Bb7 11. dxc5 bxc5 12. Nh4 $1 {[%cal Rc3d5] LiveBook: 3 Games} Nb6 (12... Re8 $14) 13. Nf5 $16 Qd7 14. Bg5 Bd8 $146 {[#]} ({Predecessor:} 14... Rfd8 15. Ne4 Qe6 16. Nxe7+ Qxe7 17. Qxc5 Qxc5 18. Nxc5 {1-0 (47) Sundararajan,K (2447)-Gonzalez Regueiro,R (1836) Sanxenxo 2017}) 15. a4 $1 a5 16. Nb5 Nxa4 $2 (16... Qe6 $16) 17. Rxa4 $18 Bc6 $2 (17... Qxb5 18. Nd6 Qc6) 18. Rh4 {[%cal Ba4h4,Bh4h6,Bh6f6][%mdl 32]} h6 {[#]} 19. Nxh6+ $1 {[%mdl 64] Deflection} gxh6 20. Bxf6 Bxf6 21. Rxh6 {[%csl Gh6][%cal Rc2h7]} Rfb8 22. Qh7+ {White mates.} Kf8 23. Rxf6 Rxb5 24. Qh6+ {Accuracy: White = 97%, Black = 10%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Low, Zhen Yu Cyrus"]
[Black "Kozak, Antoni"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2385"]
[BlackElo "2236"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,99,37,39,54,51,56,34,36,44,56,52,60,62,70,68,66,72,72,75,132,131,132,130,168,-13,-19,-25,0,-44,0,0,5,6,9,0,0,0,0,0,0,0,8,0,0,0,10,0,0,-62,7,10,47,57,61,0,81,0,25,19,14,21,26,28,85,54,71,71,70,2,2,4,26,8,525,516,447,432,389,368]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. Be3 a6 10. Nxc6 {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack} (10. f4 Qc7 11. Kh1 Rb8 12. a4 Re8 13. Qd2 Nxd4 14. Bxd4 e5 15. Be3 Be6 16. a5 Rbc8 17. f5 Bc4 18. Rfd1 d5 19. exd5 Bb4 {1-0 (29) Kryvoruchko,Y (2710)-Salem,A (2624) Berlin 2015}) 10... bxc6 11. Na4 Rb8 12. c4 {LiveBook: 5 Games. White is slightly better.} e5 13. b3 Be6 14. Nc3 $146 ({Predecessor:} 14. Rc1 Qd7 15. Qd3 Bh3 16. Rfd1 Bxg2 17. Kxg2 Qg4 {1-0 (50) Nowak,L (2116)-Teclaf,P (2235) Warsaw 2015}) 14... Qd7 15. Qe2 Bh3 16. Rad1 Bxg2 17. Kxg2 Qe6 18. Rd3 Nd7 19. Rfd1 f5 {White should prevent ...f4.} 20. Bg5 {Black must now prevent Bxe7.} f4 (20... Nf6 $142) 21. Bxe7 $16 Qxe7 22. f3 $1 fxg3 23. hxg3 $2 ({White has to play} 23. Rxd6 $18 Nc5 24. Rxc6 (24. hxg3 Rf6 $16)) 23... Rf6 $11 24. Qd2 {[%cal Rd3d6]} Rbf8 $1 25. Na4 {[%cal Rd3d6]} d5 26. cxd5 cxd5 27. Nc3 ({Reject} 27. exd5 e4 $17) ({Not} 27. Rxd5 Nb8 $16) 27... Qf7 $1 28. Nxd5 Rxf3 {[#]} 29. Ne7+ $1 {[%mdl 512]} Kh8 (29... Qxe7 30. Rxf3) 30. Nf5 Rxd3 31. Qxd3 Nc5 $132 {[%mdl 2048] Black is fighting back} 32. Qc2 Ne6 $1 33. Rf1 Qd7 34. Rd1 Qf7 35. Qc3 (35. Rf1 $11) 35... Nd4 (35... Qh5 $15 36. Re1 Rd8) 36. Rf1 g6 37. Ne3 Qe8 38. Qc4 ({Better is} 38. Rxf8+ $14 Qxf8 39. Ng4) 38... a5 (38... Rxf1 $11 39. Nxf1 Qc6) 39. Nd5 (39. Qc5 $1 $16 Rxf1 40. Nxf1) 39... h5 40. Qa6 Qc8 41. Rf6 Qxa6 ({Don't blunder} 41... Qc2+ $2 42. Kh3 $18) 42. Rxa6 {[%mdl 4096] Endgame KRN-KRN} Rc8 (42... Kg7 $11 {keeps the balance.}) 43. Rxg6 {Strongly threatening Nf6.} Rc2+ 44. Kh3 {Nf6 is the strong threat.} Kh7 45. Rf6 ({White should play} 45. Ra6 $1 $14) 45... Rxa2 46. Kh4 Rh2+ 47. Kg5 {Threatening mate with Rf7+.} Rh3 $2 {[%mdl 8192] [#]} (47... Rg2 $11 {and Black is okay.}) 48. Rf7+ $1 $18 Kg8 {[#]} 49. Kf6 $1 {Ne7+ would kill now.} Nc6 50. Rc7 {Precision: White = 57%, Black = 35%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Gschnitzer, Oswald"]
[Black "Shyam Prasad Reddy K"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2370"]
[BlackElo "2137"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,85,33,35,83,44,55,14,24,27,19,0,8,8,19,-12,-16,-34,-20,-24,-33,-26,-34,-33,-41,-38,-3,-3,-4,-2,0,-15,0,-14,0,-14,0,-22,0,7,7,0,0,11,35,12,515,509,481,510,496,503,463,460,452,416,5173,5085,29967,29964,29976,29978,29978,29979,29979,29980,29967,29966]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qb3 Nb6 6. d4 Bg7 7. Bf4 O-O 8. Rd1 c6 {D90: Grünfeld: 4 Nf3 Bg7 sidelines} 9. e3 Be6 10. Qc2 N8d7 11. Be2 {LiveBook: 3 Games} (11. Ng5 Bc4 12. Bxc4 Nxc4 13. Qe2 Nd6 14. O-O h6 15. Nf3 Qa5 16. e4 {½-½ (75) Khismatullin,D (2617)-Matinian,N (2495) Sochi 2016}) 11... Nf6 12. O-O Nbd5 13. Be5 Bf5 $146 ({Predecessor:} 13... Rc8 14. Ng5 Qa5 15. Nxe6 fxe6 16. Na4 {1-0 (40) Krutti,V (2415)-Gara,A (2030) Zalakaros 1995}) 14. Qb3 Qb6 15. Bc4 Rfd8 16. Rfe1 Rac8 17. Ng5 h6 18. Nxf7 Qxb3 19. Bxb3 Kxf7 20. e4 {[#]} Nxe4 $1 {[%mdl 512]} 21. Nxe4 Bxe5 22. dxe5 b6 23. Rd4 Be6 24. Red1 Rc7 25. Kf1 Rcd7 26. Nc3 Ke8 27. Ke2 g5 28. Kf3 h5 29. Ke4 {[%cal Rc3d5]} Nxc3+ 30. bxc3 Rxd4+ 31. cxd4 $11 {[%mdl 4096] Endgame KRB-KRB} Kf7 32. Rc1 Rc8 $2 {[%mdl 8192]} (32... c5 $11) 33. Bxe6+ $1 $18 Kxe6 {[#]} 34. Rxc6+ $3 {[%mdl 576] Remove Defender, Decoy} Rxc6 {KR-KP} 35. d5+ {[%mdl 64] Double Attack} Kd7 36. dxc6+ Kxc6 {[#] KP-KP} 37. Kf5 $1 {[%cal Rf5e6] Threatens to win with Ke6.} Kd5 (37... Kd7 $142 38. Kxg5 b5 39. Kxh5 b4) 38. Kxg5 b5 39. Kxh5 {White mates.} a5 40. g4 {[%cal Bg2g4,Bg4g5,Bg5g6][%mdl 32]} Ke6 41. Kh6 b4 42. g5 a4 {[#]} 43. g6 $1 {Accuracy: White = 60%, Black = 23%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Lin, Yi"]
[Black "Mulenko, Alexander"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2359"]
[BlackElo "2090"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,97,31,18,-5,0,-29,-13,-55,-9,-9,-4,-22,-27,-70,-68,-65,-36,-39,0,-38,-15,-23,0,-24,68,69,65,68,90,80,87,71,157,157,152,162,156,149,167,167,167,167,192,183,197,197,203,196,260,245,305,297,340,339,410,390,500,498,492,520,506,513,497,451,631,618,668,654,832,850,883,964,990,984,981,967]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Bd2 Be7 6. Nf3 O-O 7. O-O Nbd7 8. Qc2 c6 9. Rd1 Ne4 10. Bf4 {E11: Bogo-Indian} g5 11. Bc1 f5 12. Nc3 Bf6 {LiveBook: 4 Games} 13. Be3 $146 ({Predecessor:} 13. e3 Rf7 14. b3 b6 15. Bb2 Bb7 16. Rac1 Qe8 17. Ne2 Rc8 {½-½ (53) Caruana,F (2802)-Nakamura,H (2786) chess.com INT 2017}) 13... Qe7 14. Qc1 h6 15. Nd2 (15. b3 {with more complications.} Rf7 16. Ne1 Nd6 17. f4 dxc4 18. Nf3) 15... Bg7 {[#] ...Nxc3 is the strong threat.} 16. Ndxe4 dxe4 17. f3 e5 {Black wants to play ...f4.} 18. f4 exf4 19. gxf4 g4 20. d5 Qb4 21. c5 Nf6 22. d6 Be6 23. Qd2 Kh8 (23... Rae8 $11) 24. Nxe4 $14 Qxd2 25. Nxd2 Nd5 26. Bxd5 $1 Bxd5 27. Nf1 Rad8 (27... Rae8 $142) 28. Bd4 $16 h5 29. Ne3 Be6 30. Kf2 Kh7 31. b4 Bh6 32. Be5 Bg7 33. Bxg7 Kxg7 34. h4 Kf6 35. Nf1 a6 (35... Bf7 {was called for.} 36. Ng3 Kg6) 36. Ng3 $18 Kg6 37. a4 Rfe8 38. Ra3 Bd7 39. Rdd3 Be6 40. Re3 {White is clearly winning.} Bd5 41. Rxe8 Rxe8 {[%mdl 4096] Endgame KRB-KRN} 42. Re3 Be4 43. Ke1 Kf7 44. Nxh5 Rh8 45. Ng3 Rxh4 46. Nxe4 Rh1+ 47. Kf2 {[#] And now d7 would win.} fxe4 48. Rxe4 Rd1 49. e3 {Precision: White = 67%, Black = 26%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Cerveny, Petr"]
[Black "Ludvik, Tomas"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "2318"]
[BlackElo "2089"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,111,0,2,-10,25,8,20,0,0,0,0,0,16,16,12,13,29,17,15,4,40,25,28,0,25,32,61,61,59,46,116,110,125,128,169,169,169,172,174,143,143,144,143,143,143,143,143,147,159,163,198,185,198,181,174,181,198,198,198,198,241,233,262,262,271,271,270,270,270,263,267,267,267,252,378,297,383,358,342,341,430,256,1278,1206,875,875,1323,743,1255,769,1005,858,1087,1079,863,808,748,602]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Bd3 Nc6 6. Nge2 Nge7 7. O-O Bf5 8. Bf4 O-O {LiveBook: 7 Games. C01: French: Exchange Variation} 9. a3 (9. Bxf5 Nxf5 10. Qd3 Nce7 {½-½ (10) Landa,K (2611)-Baron,T (2528) Karlsruhe 2017}) 9... Bd6 (9... Bxc3 $5 10. bxc3 Qd7 $11) 10. Re1 $146 ({Predecessor:} 10. Bxf5 Nxf5 11. Qd3 Nce7 12. Nxd5 Nxd5 13. Qxf5 Nxf4 14. Nxf4 g6 15. Qg4 Qf6 16. Nh5 {1-0 (41) Gonzalez Parejo,R (2243)-Ruiz Castillo,J (2403) Quibdo 2015}) 10... Re8 {The position is equal.} 11. Bb5 Qd7 12. Qd2 a6 {aiming for ...Bxf4.} 13. Ba4 Be6 14. Bxd6 Qxd6 15. Nf4 Ng6 16. Nxg6 hxg6 17. Ne2 f6 18. Nf4 Bf7 19. h4 Rxe1+ 20. Rxe1 Ne7 21. c3 Nf5 22. g3 Rd8 (22... g5 $1 $14 23. hxg5 fxg5) 23. Bc2 Qd7 24. Qd3 Kf8 25. h5 g5 26. Qxf5 gxf4 27. Qxd7 ({Stronger than} 27. gxf4 Qxf5 28. Bxf5 Bxh5 $11) ({Don't take} 27. Qxf4 $6 Bxh5 28. Kg2 Re8 $16) 27... Rxd7 $18 {[%mdl 4096] Endgame [#] KRB-KRB} 28. g4 $1 ({Of course not} 28. gxf4 $6 Bxh5 29. Bf5 Rd8 $11) 28... Rd6 {[#]} 29. Kg2 $1 Rb6 30. Rb1 Be8 31. Kf3 a5 32. Kxf4 a4 33. Ke3 Bb5 34. Kd2 Bd7 35. f3 Bc6 36. Bf5 Bb5 37. Re1 Bc4 38. Kc1 Bb5 39. Re6 Rxe6 40. Bxe6 {KB-KB} Bc6 41. f4 Ke7 42. Bf5 Be8 43. Kd2 b6 44. Ke3 c6 (44... Bb5 {keeps fighting.} 45. g5 Kf7) 45. Kf3 Kf8 46. Kg3 Ke7 47. Kh4 Kf8 48. Bc2 (48. g5 $142 Ke7 49. g6) 48... b5 $2 (48... c5 49. g5 Bb5) 49. Bf5 {White is clearly winning.} Ke7 50. g5 {[%cal Bg4g5,Bg5h6][%mdl 32]} Kf8 51. Bc8 Ke7 52. h6 {Hoping for h7.} gxh6 53. gxh6 {h7 is the strong threat.} Kf7 54. Bf5 Kg8 55. Kg4 Kf7 56. Kf3 {Accuracy: White = 72%, Black = 37%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Kulkarni Bhakti"]
[Black "Kvaloy, Aksel Bu"]
[Result "1/2-1/2"]
[ECO "A57"]
[WhiteElo "2303"]
[BlackElo "1914"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,51,0,0,0,0,0,16,0,0,0,0,0,0,0,0,0,11,0,0,4,9,-3,-8,-5,22,23,23,5,26,0,0,-52,-62,-44]} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 bxc4 5. e4 e6 (5... d6 6. Bxc4 g6 7. Nc3 Bg7 8. Nf3 Nbd7 9. h3 O-O 10. O-O Rb8 11. Re1 Nh5 12. Be2 Ne5 13. Nxe5 Bxe5 14. Bxh5 gxh5 15. Bh6 Re8 16. Qd2 Kh8 17. Bf4 Bd4 18. Be3 {0-1 (63) Dreev,A (2644)-Perunovic,M (2622) Berlin 2015}) 6. Bxc4 {A57: Benko/Volga Gambit} exd5 7. exd5 d6 8. Ne2 {[%cal Bg1e2,Be2g3,Bg3e4][%mdl 32]} Be7 9. O-O O-O 10. Nbc3 Nbd7 {LiveBook: 15 Games} 11. b3 Nb6 12. Ng3 Ng4 13. Bf4 Bf6 $146 14. Nge4 Bf5 15. Bd3 Bxe4 16. Bxe4 Bxc3 17. Qxc3 Nf6 18. Qd3 Nxe4 19. Qxe4 Qf6 $36 {[%mdl 2048] Black fights for an advantage.} 20. Rad1 Rfe8 (20... Rae8 $5 21. Qf3 $8 h6 $11) 21. Qf3 Nd7 22. Qg3 Ne5 23. Rfe1 Qf5 (23... Nd3 $5 24. Rxe8+ (24. Qxd3 Qxf4 25. Qb5 Re5 $11) 24... Rxe8 25. Bxd6 Nxf2 26. Qxf2 (26. Rf1 Ne4 $11 {[%mdl 64] Double Attack}) 26... Qxd6 $11) 24. h3 (24. Bxe5 $5 Rxe5 25. Rxe5 Qxe5 26. Qxe5 dxe5 27. Rc1 $11) 24... f6 25. Kh1 (25. Bc1 $11) 25... a5 $15 26. Bc1 {Accuracy: White = 51%, Black = 62%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Zhang, Xiaopeng"]
[Black "Postny, Evgeny"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2299"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,82,-6,-14,-14,-19,-12,-18,0,0,0,-20,0,0,0,-15,0,-35,-3,-49,-38,-54,0,-12,0,0,0,0,0,-20,-6,-18,-22,-54,-57,-77,-77,-103,-104,-109,-109,-119,-104,-115,-101,-115,-80,-80,-80,-104,-110,-102,-101,-112,-104,-174,-170,-238,-227,-215,-213,-407,-369,-361,-362,-356,-341]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 O-O 5. a3 Be7 6. g3 b6 7. Bg2 Bb7 8. O-O c5 9. dxc5 {E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+} (9. e3 cxd4 10. exd4 d5 11. b3 Nc6 12. Bb2 Rc8 13. Rc1 dxc4 14. bxc4 Na5 15. Re1 Rc7 16. Qe2 Qc8 {½-½ (72) Dreev,A (2660)-Predojevic,B (2640) Sibenik 2016}) 9... bxc5 10. b3 {LiveBook: 9 Games} Nc6 11. Bb2 {The position is equal.} Qc7 12. Qc2 h6 13. Rfd1 Rab8 14. Nf1 $146 ({Predecessor:} 14. Rab1 Rfd8 15. Bc3 Ba8 16. Qb2 d5 17. cxd5 exd5 {1-0 (34) Fischer,H (2090)-Rogobete,N (2147) Bayern 2012}) 14... Ba8 15. Rab1 a5 16. Ne3 Rb6 17. Bc3 Rfb8 {[%cal Bf8b8,Bb8b6,Bb6a6][%mdl 32]} 18. Rb2 Qa7 19. h4 a4 20. bxa4 Rxb2 21. Bxb2 Na5 22. Be5 Rb6 23. Nd2 Bxg2 24. Kxg2 Nc6 25. a5 Qxa5 26. Bc3 Qa8 27. f3 Ra6 28. Nb1 Qb8 29. Qd3 Nh5 30. Nf1 {[#]} Bxh4 $1 {[%cal Rh5g3][%mdl 512]} 31. Qd6 (31. gxh4 Nf4+) 31... Qxd6 32. Rxd6 Rb6 33. Nbd2 Bf6 34. Ne4 Bxc3 35. Nxc3 Rb2 {Hoping for ...Rc2.} 36. Kf2 {[#]} (36. Rd2 $17 Rxd2 37. Nxd2) 36... Rc2 $1 $19 {[%cal Rc2c3]} 37. Ne4 (37. Nb5 $142) 37... Nd4 ({Not} 37... Rxc4 38. Rxd7 Nf6 39. Nxf6+ gxf6 40. Ne3 $15) 38. Nfd2 {[#]} Nxg3 $1 {[%mdl 512]} 39. Rxd7 $2 (39. Nxg3 Rxd2 40. Rxd7) 39... Nxe4+ {Black is winning.} 40. Nxe4 Rxe2+ 41. Kf1 Ra2 {Accuracy: White = 31%, Black = 68%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Serrano Salvador, Eduardo"]
[Black "Frolov, Artur"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "2282"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,64,23,25,6,35,30,36,34,41,41,37,6,46,28,40,15,25,24,51,50,103,46,45,58,62,51,49,36,59,16,37,33,37,3,9,8,0,-438,-450,-442,-459,-446,-440]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 c6 5. Nc3 d5 6. cxd5 cxd5 7. Ne5 O-O 8. Bg2 e6 9. O-O Nfd7 10. f4 Nc6 11. Be3 Nb6 12. Bf2 f5 {LiveBook: 6 Games. D79: Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5)} (12... Ne7 13. Na4 f6 14. Nxb6 axb6 15. Nd3 Nf5 16. Qb3 Nd6 17. Rfc1 Bd7 18. a4 Rf7 19. Qd1 Bf8 20. b3 Ne4 {½-½ (58) Pantsulaia,L (2587)-Cheparinov,I (2718) Abu Dhabi 2018}) 13. a4 a5 14. Qb3 Bd7 {White has an edge.} 15. Rfc1 Be8 $146 ({Predecessor:} 15... Nb4 16. Nb5 Rc8 17. Be1 Bxe5 18. dxe5 Rxc1 19. Rxc1 Bxb5 20. axb5 {½-½ (60) Ma,Z (2394)-Wan,Y (2459) Qinhuangdao 2011}) 16. Nb5 g5 17. Qa3 Nc8 18. Rc3 Bf6 {[%cal Bg7f6,Bf6e7,Be7b4][%mdl 32]} 19. Rac1 Be7 20. Qb3 {[%cal Re5c6]} Bb4 21. R3c2 N8e7 (21... Nd6 $14) 22. Qe3 (22. fxg5 $16 Nxe5 23. dxe5) 22... g4 $14 23. Nd3 Bd7 24. Nc5 Bxc5 25. Rxc5 Qb8 26. Qa3 h5 27. R5c3 Nc8 28. Qc5 Rf7 29. h4 Nb4 {Hoping for ...Na2.} 30. Nc7 $2 {[%mdl 8192] [#]} (30. Qc7 $11 {and White is okay.} Qxc7 31. Rxc7 (31. Nxc7 Rb8 $11)) 30... b6 $19 {Black is clearly winning.} 31. Na6 Nxa6 ({Not} 31... bxc5 32. Nxb8 Rxb8 33. Rxc5 $19) 32. Qa3 Nd6 {Precision: White = 33%, Black = 48%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Abdulla, Murad"]
[Black "Zhang, Ziji"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "2263"]
[BlackElo "2387"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,98,-23,-17,0,-5,-24,-81,-85,-84,-82,-85,-80,-81,-51,-56,-56,-70,-51,-66,-51,-66,-51,-74,-55,-60,-64,-75,-43,-43,-43,-63,-36,-36,-36,-50,-43,-50,-50,-50,-50,-76,-78,-78,-79,-114,-110,-156,-173,-232,-232,-233,-220,-292,-236,-243,-251,-389,-378,-335,-334,-528,-518,-599,-587,-514,-415,-415,-415,-422,-408,-666,-666,-666,-666,-639,-623,-605,-428]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. d4 exd4 7. Nxd4 c5 8. Nb3 Qxd1 9. Rxd1 Bd7 10. Be3 b6 11. Nc3 O-O-O 12. a4 {[#] LiveBook: 7 Games. a5 is the strong threat.} Bd6 {C69: Ruy Lopez: Exchange Variation with 5 0-0 f6} (12... a5 13. Nb5 Ne7 14. Nd2 g5 15. e5 fxe5 16. Nc4 Nc6 17. Bxg5 Re8 18. c3 Rg8 19. Be3 Bg4 20. Re1 Rd8 {0-1 (43) Cuenca Jimenez,J (2492)-Sutovsky,E (2628) Caleta 2017}) 13. Nd2 Be6 14. f4 (14. Ne2 $11) 14... Ne7 $17 {[%cal Bg8e7,Be7c6,Bc6d4,Bd4f3][%mdl 32] Black is better.} 15. Nf3 Nc6 16. Re1 $146 {[#]} Nd4 $1 {[%mdl 512]} 17. Rac1 (17. Bxd4 cxd4) 17... Nxf3+ (17... Rhe8 {seems wilder.} 18. Kf2 Kb7 19. h3 Nc6 20. g3 h6) 18. gxf3 f5 19. Rcd1 Rhf8 20. Rf1 Kb7 21. Rd2 Rfe8 22. Rfd1 Kc6 23. Kf2 Be7 24. Rxd8 Rxd8 (24... Bxd8 {keeps more tension.} 25. Kg2 Bh4 26. Bf2 Bf6 27. e5 Be7) 25. Rxd8 Bxd8 $15 {[%mdl 4096] Endgame KBB-KBN} 26. Ke2 b5 27. axb5+ axb5 28. Kd2 Bf6 29. Nd1 b4 30. Bf2 g6 31. b3 c4 32. bxc4 Bxc4 33. Be3 Kb5 34. Ba7 Be6 35. e5 (35. Ne3 $142) 35... Be7 $19 36. Be3 c5 {[%cal Bc7c5,Bc5c4,Bc4c3][%mdl 32]} 37. Nb2 Bd5 38. Ke2 c4 39. Bd4 (39. Ba7 {was worth a try.}) 39... c3 40. Nd1 Bc4+ 41. Ke3 (41. Kf2 $142) 41... Ka4 42. Bb6 Ka3 43. Ba7 Ka2 44. Kd4 Be2 45. Ne3 {and if Bc5 works, White does fine.} Bxf3 46. Bb8 (46. Bc5 $142 b3 47. cxb3 Bxc5+ 48. Kxc5) 46... b3 {Black is clearly winning.} 47. cxb3 Kxb3 (47... Kb2 $2 48. b4 $17) 48. Bd6 Bh4 {Strongly threatening ...Bb7.} 49. e6 c2 {Accuracy: White = 35%, Black = 74%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Mis, Mieszko"]
[Black "Kulhanek, Tomas"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "2242"]
[BlackElo "2303"]
[Annotator "TA"]
[PlyCount "150"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,150,56,61,33,40,29,23,7,14,5,18,0,8,0,0,0,0,0,0,-6,45,39,41,37,59,61,47,54,57,40,75,62,183,161,147,151,181,182,187,186,228,155,273,267,245,207,237,233,416,419,415,392,362,56,145,128,129,97,106,105,134,94,99,87,124,89,99,93,101,58,139,146,221,234,223,237,268,268,268,268,249,267,277,277,268,269,275,267,261,206,595,595,583,31,32,0,8,8,8,8,14,14,21,0,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,7,8,8,8,0,14,14,14,14,14,14,14,14,14,14,14,0,14,14,14]} 1. c4 d6 2. d4 g6 3. Nf3 Bg7 4. g3 e5 5. dxe5 dxe5 6. Qxd8+ Kxd8 7. Nc3 {A41: 1 d4 d6: Tartakower System and Modern Defence} f6 {LiveBook: 8 Games} 8. b3 (8. Be3 Be6 9. Nd2 Ne7 10. Bg2 c6 11. Nb3 Bxc4 12. O-O-O+ Kc7 13. Bc5 Nc8 14. f4 Bxb3 15. axb3 {0-1 (64) De Filomeno,S (2429)-Rombaldoni,D (2481) Chianciano Terme 2018}) 8... Be6 9. Ba3 {White is slightly better.} Nd7 10. Bg2 $146 ({Predecessor:} 10. O-O-O Nh6 11. Bg2 Kc8 12. h3 Nf7 13. Rd2 Re8 14. Rhd1 Bf8 15. Bxf8 Rxf8 {½-½ (29) Fontaine,Q (2122)-Pel,B (2264) Belgium 2016}) 10... Nh6 11. O-O Bf8 12. Bb2 Nf7 13. Rfd1 c6 14. Rac1 Ke8 15. Nd2 Rd8 16. h3 $36 {[%mdl 2048] White fights for an advantage.} Be7 (16... h5 $11) 17. Nd5 $14 {[#] aiming for Nc7+.} Bd6 18. Ne4 cxd5 19. cxd5 Bf5 {Threatens to win with ...Bxe4.} 20. Nxd6+ Nxd6 21. g4 $1 Be4 {[#] ...Bxg2 is the strong threat.} 22. f3 h5 (22... Bxf3 $14 23. Bxf3 (23. exf3 h5 $16) 23... Ke7) 23. fxe4 $18 hxg4 24. hxg4 Rh4 25. Ba3 Nb5 26. Bb4 f5 27. e3 {Strongly threatening a4.} (27. exf5 Rxg4 28. Rc4 Nd4 $16) 27... Nf6 (27... a5 $16) 28. gxf5 gxf5 29. Rf1 Nxe4 {Black wants to play ...Ng3.} 30. Rxf5 Rxd5 $2 (30... Nbd6 {was necessary.} 31. Rxe5+ Kd7 32. Bxd6 Nxd6) 31. Rf8+ Kd7 {If only Black now had time for ...Nbd6....} 32. Rf7+ Ke6 33. Rcf1 $2 ({Don't take} 33. Rxb7 Nbd6 $18) (33. Re7+ $18 Kf5 34. Rf1+ Kg6 35. Bf3) 33... Rd7 (33... Nbd6 $1 $14 34. Bxe4 (34. Rg7 Rd3 $14) 34... Nxf7 35. Bf5+ Kf6) 34. Rxd7 $16 Kxd7 35. Rf7+ Kc8 36. Re7 Ned6 37. Bxd6 Nxd6 38. Rxe5 {[%mdl 4096] Endgame KRB-KRN} b5 39. Rc5+ Kd8 40. Rc6 Nf5 41. e4 Ne3 ({Black should play} 41... Ng3 $1 $14) 42. Bf3 Rf4 (42... Ng4 $16) 43. Kf2 $18 Ng4+ 44. Kg3 Rxf3+ 45. Kxg4 {KR-KR} Rf2 46. Ra6 Kc7 47. Kg3 Rf1 48. Rxa7+ Kd6 49. Ra6+ Kc5 50. Kg4 Kd4 51. Rb6 Rf2 $2 (51... Kc5 {is a better chance.} 52. Ra6 Rg1+ 53. Kf5 Rf1+ 54. Ke6 Rh1) 52. Rxb5 Rxa2 53. e5 $2 ({White has to play} 53. Kf3 $18 Ra7 54. Rd5+ Kc3 55. e5) 53... Ke4 $1 $14 54. e6 {[%cal Be5e6,Be6e7][%mdl 32] Black must now prevent Kg5.} Ra6 {The position is equal.} 55. e7 Rg6+ $1 56. Rg5 Re6 57. Rg7 Ke5 58. Kf3 Kf6 59. Rh7 (59. e8=N+ {looks sharper.} Rxe8 60. Rg2 Rb8 61. Rb2 Kf5 62. Ke3) 59... Rxe7 60. Rh2 (60. Rh6+ {keeps more tension.} Ke5 61. Ke2 Kd4+ 62. Kd2 Kc5 63. Kc3) 60... Rb7 61. Rb2 Ke5 62. Ke3 Kd5 63. Kd3 $1 Kc5 64. Kc3 Rh7 65. Rg2 Rh3+ 66. Kb2 Kb6 67. Ka3 Rh4 68. b4 Rh6 69. Ka4 Rf6 70. Rg8 Rh6 71. Rb8+ Ka7 72. Rb5 Ka6 73. Ra5+ Kb6 74. Rc5 Rf6 75. Rh5 $1 Rg6 {Precision: White = 57%, Black = 50%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Chudinovskikh, Alexander M"]
[Black "Lalic, Bogdan"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2184"]
[BlackElo "2418"]
[Annotator "TA"]
[PlyCount "26"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,26,32,28,-71,-15,-29,11]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O Ngf6 5. Re1 a6 6. Bf1 b6 7. c3 Bb7 8. d3 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} g6 9. Nbd2 (9. Bg5 Bg7 10. Nbd2 h6 11. Bh4 O-O 12. d4 cxd4 13. cxd4 g5 14. Bg3 Nh5 15. a4 Nxg3 16. hxg3 {1-0 (47) Tomashevsky,E (2728)-Mamedov,R (2650) Huaian 2016}) 9... Bg7 10. d4 cxd4 11. cxd4 O-O {LiveBook: 12 Games} 12. d5 $146 {[#]} (12. a4 $11 {keeps the balance.}) ({Predecessor:} 12. Bd3 Rc8 13. Nf1 e5 14. d5 Nc5 15. Bc2 a5 {0-1 (51) Kobalia,M (2596)-Bocharov,D (2585) Sochi 2017}) 12... Rc8 (12... Nc5 $1 $17) 13. Nb3 Ng4 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Barrish, Daniel"]
[Black "Plischki, Sebastian"]
[Result "1/2-1/2"]
[ECO "A50"]
[WhiteElo "2166"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,83,32,34,29,19,36,5,2,-2,0,-27,-29,-45,-39,-92,-49,-114,-118,-102,-41,-51,-18,-31,0,0,8,-59,-43,-81,-51,-52,-33,-119,-79,-80,-18,-70,-36,-46,-6,-6,-4,0,0,0,0,4,11,-3,10,14,13,27,15,15,17,23,122,105,461,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 d6 5. Ne2 O-O 6. Be3 c5 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3} 7. Qd2 Nc6 8. d5 Ne5 9. Nec3 {LiveBook: 18 Games} Nh5 10. Be2 f5 $1 11. f4 $146 ({Predecessor:} 11. Na3 f4 12. Bf2 Bd7 13. Nc2 a6 14. a4 {½-½ (54) Caruana,F (2811)-Bacrot,E (2711) Baden-Baden 2015}) 11... Ng4 12. Bxg4 $1 fxg4 13. O-O a6 14. Na3 Qa5 15. Rae1 (15. g3 $15) 15... Bd7 16. Nd1 (16. g3 $15) 16... Qxd2 $17 17. Bxd2 b5 ({Black should play} 17... g3 $17 18. hxg3 Nxg3) 18. g3 $1 $15 Rab8 19. b3 e5 20. dxe6 Bxe6 21. Ne3 (21. Re2 $11) 21... Nf6 22. Nd5 Nxd5 23. cxd5 Bd7 24. e5 (24. Ba5 $15) 24... Bf5 25. Ba5 Rbc8 (25... Rbe8 $17 {[%cal Rd6e5]} 26. Bc7 dxe5 27. Bxe5 (27. fxe5 Rf7 $17) 27... Rd8) 26. exd6 (26. Rf2 $11) 26... Rf7 27. Re5 Rd7 (27... Bf8 $5 {[%cal Rf8d6]} 28. Bc7 c4 $11) 28. Bc7 $1 Bf8 29. Rc1 Bxd6 30. Bxd6 Rxd6 31. Kf2 Kf7 32. Ke3 h5 33. b4 cxb4 34. Rxf5+ {[%mdl 64] Remove Defender} gxf5 35. Rxc8 bxa3 $11 {[%mdl 4096] Endgame KR-KR} 36. Kd4 b4 {[#]} (36... Rd7 $1 $11) 37. Rb8 $1 $16 a5 $2 {[%mdl 8192] [#]} (37... Rd7 $16) 38. Kc5 $2 (38. Ke5 $1 $18 {[%cal Re5d6]} Rg6 39. Kxf5) 38... Ke7 $11 {The position is equal.} 39. Rb5 Rd8 {Strongly threatening ...Rc8+.} 40. Rxa5 Rc8+ $1 41. Kxb4 Rc2 42. d6+ {Accuracy: White = 50%, Black = 38%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Laverton, Christian"]
[Black "Spiess, Gunter"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2147"]
[BlackElo "2414"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,65,-15,-17,-17,-17,-12,-12,-16,-28,-22,-19,-18,-30,-27,-39,-28,-35,-39,-39,-33,-42,-43,-64,-54,-55,-32,-25,-25,-93,-97,-98,-14,-20,-4,-4,-4,0,0,-22,-14,-14,-17,-45,-43,-44,-28,-28]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 a6 6. Bxc4 c5 7. O-O b5 8. Be2 Bb7 9. Ne5 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4} (9. dxc5 Nc6 10. Qc2 Nb4 11. Qb3 Bxc5 12. Rd1 Qb8 13. a4 bxa4 14. Qxa4+ Bc6 15. Qa5 Be7 16. Ra3 Nc2 {1-0 (46) Wei,Y (2743)-Navara,D (2740) Yancheng 2018}) 9... Nbd7 10. Bf3 Qc7 11. Nxd7 {LiveBook: 3 Games. The position is equal.} Qxd7 12. Qe2 Rc8 13. Rd1 {[#] And now dxc5 would win.} cxd4 14. Rxd4 Bxf3 15. Qxf3 Qc6 $146 ({Predecessor:} 15... Qc7 16. a3 Bd6 {½-½ (29) Roumegous,M (2239)-Flear,C (2146) Marseille 2001}) 16. Qxc6+ Rxc6 17. a3 Bd6 18. Rd1 Ke7 19. Bd2 Rhc8 20. f3 Be5 21. Rac1 Rc4 22. Kf2 Nd5 ({Much weaker is} 22... Bxh2 $6 23. g3 $16) 23. Nxd5+ exd5 24. Bb4+ (24. Rxc4 $1 $11 {remains equal.} Rxc4 25. Bb4+ {[%mdl 64] Discovered Attack} Ke6 26. b3 Rc2+ 27. Rd2) 24... Ke6 $17 25. Rxc4 Rxc4 {[%mdl 4096] Endgame KRB-KRB} ({Better is} 25... bxc4 $17 26. Rd2 g5) 26. Rd2 $11 Rc1 27. f4 $1 {[%cal Rf4e5]} Bf6 28. g4 g6 29. e4 Bh4+ 30. Kg2 Be1 31. exd5+ Kd7 32. Rd4 $1 Rc2+ {[%mdl 1024] Black has compensation.} 33. Kf3 {Accuracy: White = 75%, Black = 74%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Haase, Pavel"]
[Black "Liu, Zhaoqi"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "2141"]
[BlackElo "2300"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,68,15,-2,0,-23,-17,-45,-48,-90,-79,-115,-115,-106,-69,-106,-110,-118,-115,-108,-56,-64,-60,-78,-73,-139,-73,-95,-101,-122,-94,-84,-77,-88,-88,-88,-72,-83,-71,-128,-128,-133,-107,-97,-97,-120,-113,-139,-53,-81,-77,-68,-59,-67,0,-75,-5,-947,-1004,-29998,-29999]} 1. c4 c5 2. Nc3 Nf6 3. g3 g6 4. Bg2 Bg7 5. d3 Nc6 6. Nh3 {LiveBook: 7 Games. A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} h5 $146 {[%cal Bh7h5,Bh5h4,Bh4h3][%mdl 32]} ({Predecessor:} 6... O-O 7. Nf4 a6 8. Qd2 e6 9. O-O Rb8 10. b3 d5 11. Ba3 Qa5 12. cxd5 Nxd5 13. Nfxd5 exd5 14. Bb2 Bg4 {1-0 (31) Timofeev,A (2564)-Almasi,I (2415) Budapest 2017}) 7. Nf4 h4 8. Qa4 {The position is equal.} Kf8 9. Be3 d6 10. Nfd5 h3 11. Bf3 Ne5 12. Rb1 Nxf3+ 13. exf3 Bd7 14. Qd1 Bc6 (14... Nxd5 $17 15. Nxd5 Bc6) 15. Nxf6 Bxf6 16. Ne4 e5 17. Qd2 ({Better is} 17. a3) 17... Kg7 ({Black should play} 17... Be7 18. Ke2 b6) 18. g4 Be7 19. Qc3 f6 20. f4 exf4 21. Bxf4 Kf7 22. Rg1 d5 23. cxd5 Qxd5 24. Rg3 (24. Bd6 $142 Bd8 25. Bxc5) 24... Qxa2 25. Rd1 Bxe4 26. dxe4 Qe6 27. e5 g5 28. Be3 Rad8 (28... Qxe5 $17 {Hoping for ...Qe6.} 29. Qxe5 fxe5) 29. Rxd8 $15 Rxd8 30. Rxh3 Qxg4 $40 {[%csl Gd8][%cal Rg4d1][%mdl 128] Black has some attack.} 31. Rh7+ Ke6 (31... Kg8 $1 $15 32. Qc2 Qd1+ 33. Qxd1 Rxd1+ 34. Kxd1 Kxh7 35. exf6 Bd6) 32. Qc2 {[#]} (32. f3 $1 $11 Qa4 33. exf6 Bxf6 34. Qc1) 32... c4 ({Don't play} 32... fxe5 33. Rh6+ Bf6 34. f3 $11) (32... Rd5 $1 $17 {aiming for ...c4.} 33. exf6 Bd8) 33. Bd2 $2 {[%mdl 8192]} (33. f4 $11 Bb4+ 34. Kf2) 33... Bc5 $19 {( -> ...Qg1+)} 34. Bc3 Qg1+ {Accuracy: White = 26%, Black = 52%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.12"]
[Round "3"]
[White "Burnett, Andrew"]
[Black "Roeder, Matthias"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2140"]
[BlackElo "2396"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,78,-1,7,0,0,0,0,0,7,6,15,0,0,0,0,0,0,0,0,-6,0,0,0,-7,0,-3,0,0,0,-19,1,-28,-16,-16,-16,-42,-44,-36,-1,0,-1,-1,0,-1,0,-1,-1,-1,0,-1,0,-2,0,0,0,-8,-1,-8,-8,-8,-8]} 1. d4 d5 2. Bf4 e6 3. e3 Bd6 4. Bg3 Nf6 5. Nd2 c5 (5... O-O 6. Ngf3 c5 7. c3 Nc6 8. Bb5 Be7 9. Qb1 Nh5 10. dxc5 Bxc5 11. Bh4 Be7 12. Bxe7 Qxe7 13. c4 Qc5 14. O-O dxc4 15. Bxc4 Nf6 {½-½ (44) Naiditsch,A (2702)-Svidler,P (2760) Antalya 2017}) 6. c3 {D00: 1 d4 d5: Unusual lines} Qc7 7. dxc5 Qxc5 8. Ngf3 O-O 9. Bd3 Nbd7 10. e4 dxe4 {LiveBook: 4 Games} 11. Bxd6 $146 ({Predecessor:} 11. Nxe4 Nxe4 12. Bxe4 Bxg3 13. hxg3 {0-1 (40) Tristan,L (2465)-Perez Ponsa,F (2542) Caba 2018}) 11... Qxd6 12. Nxe4 Nxe4 13. Bxe4 Qf4 (13... Qc7 {keeps more tension.} 14. O-O Nf6 15. Bc2 b6 16. Qe2 Bb7) 14. Bc2 Nf6 15. Qd2 Qc7 16. O-O b6 17. Rfe1 Bb7 18. Ne5 Rad8 19. Qe2 Rd6 20. Rad1 Rfd8 21. c4 a5 22. a3 Qc5 23. Rxd6 Rxd6 24. Rd1 Kf8 25. h4 Rxd1+ 26. Bxd1 Ke7 27. Qe3 Qxe3 28. fxe3 Nd7 29. Nxd7 {The position is equal.} Kxd7 $11 {[%mdl 4096] Endgame KB-KB} 30. b4 axb4 31. axb4 Kd6 32. Bf3 Ba6 33. Be2 $1 {[#] And now c5+! would win.} Ke5 34. Bd3 f5 35. g3 g6 36. Kf2 h6 37. Ke2 g5 38. hxg5 hxg5 39. Kd2 Bc8 {Accuracy: White = 46%, Black = 43%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Postny, Evgeny"]
[Black "Low, Zhen Yu Cyrus"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2623"]
[BlackElo "2385"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,39,28,27,5,7,-22,-20,-31,-19,-41,-31,-71,-69,-76,-70,-79,-70,-99,-65,-70]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qb3 Nb6 6. d4 Bg7 7. Bf4 {D90: Grünfeld: 4 Nf3 Bg7 sidelines} Be6 8. Qa3 Nc6 9. e3 a5 10. Bb5 O-O 11. Bxc6 bxc6 {LiveBook: 13 Games} 12. Qc5 Nd5 13. Nxd5 $146 ({Predecessor:} 13. Be5 Nxc3 14. Qxc3 Bd5 15. Bxg7 Kxg7 {½-½ (65) Bu,X (2662)-Li,C (2686) Xinghua 2013}) 13... Qxd5 14. Qxd5 Bxd5 15. Bxc7 c5 16. Bb6 cxd4 17. Bxd4 Bxd4 18. Nxd4 Rfb8 19. O-O-O Bxa2 20. Rd3 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Wang, Yiye"]
[Black "Barrish, Daniel"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2443"]
[BlackElo "2166"]
[Annotator "TA"]
[PlyCount "136"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,136,29,18,20,0,20,18,9,-33,19,0,44,34,16,28,35,19,26,41,39,0,0,0,32,22,37,27,35,37,74,16,20,29,26,18,26,26,26,16,17,17,17,15,20,21,20,10,12,14,24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,0,146,134,121,42,41,45,92,33,62,3,3,3,4,3,4,4,4,4,4,4,4,4,4,4,7,7,8,4,4,0,7,8,580,576,574,551,662,310,5077,5077,5073,5073,5073,5073,4602,29972,29969,5612,29978,29979,29980,29981,29981]} 1. c4 e5 2. g3 c6 3. Nf3 e4 4. Nd4 d5 5. d3 (5. cxd5 Qxd5 6. Nc2 Nf6 7. Nc3 Qh5 8. Ne3 Bc5 9. Qc2 Qe5 10. Bg2 Bxe3 11. fxe3 Bf5 12. b4 O-O 13. Bb2 {1-0 (41) Aronian,L (2801)-Papaioannou,I (2652) Heraklio 2017}) 5... Bc5 6. Nb3 {A20: English Opening: 1...e5} Bb4+ 7. Bd2 Bxd2+ 8. Qxd2 dxc4 9. dxc4 Nf6 10. Bg2 {LiveBook: 11 Games} O-O $146 ({Predecessor:} 10... Qxd2+ 11. N1xd2 {½-½ (41) De Visser,L (2205)-Henrichs,T (2475) Austria 2018}) 11. h3 Na6 12. Nc3 Qe7 13. g4 h6 (13... Be6 $15) 14. Qe3 Qb4 15. O-O-O Qxc4 16. Rd4 Qe6 17. Rhd1 {[%cal Rg2e4]} Nd5 18. Nxd5 cxd5 19. Rxd5 Nb4 {[%mdl 64] Double Attack} 20. R5d2 Nxa2+ 21. Kb1 Nb4 22. Rd6 Qe8 {Strongly threatening ...Qa4.} 23. Nc5 $1 ({Don't blunder} 23. Qxe4 $2 Qa4 $19) 23... b6 24. Qxe4 (24. Bxe4 $16 Rb8 25. Nd7 Bxd7 26. Rxd7) 24... Qb5 25. Nd3 Nxd3 26. Qxd3 Qxd3+ 27. R1xd3 Rb8 $1 28. Bd5 Bb7 29. Rd7 Bxd5 30. R3xd5 $11 {[%mdl 4096] Endgame KRR-KRR} Rfe8 31. e3 a5 32. Rf5 f6 33. Rfd5 Re5 34. Rxe5 fxe5 {KR-KR} 35. Kc2 Rf8 36. Rd2 Rf3 37. Kd3 Rxh3 38. Ke4 h5 39. g5 Kf7 40. Kf5 Rf3+ 41. Kxe5 Kg6 42. Ke4 Rf7 (42... Rh3 $1 $11 {keeps the balance.}) 43. f4 $16 h4 44. Rd6+ (44. Kf3 $16) 44... Kh5 $14 45. Kf3 b5 46. Ra6 ({Better is} 46. Rd8 $16) 46... h3 47. Rxa5 (47. Ra8 $1 $14) 47... h2 $1 $11 {[%cal Rh2h1]} 48. Kg2 Rc7 49. Kxh2 {Black must now prevent Kg3.} Kg4 50. Rxb5 Rc2+ 51. Kg1 Kg3 {[%cal Rc2c1]} 52. Kf1 {aiming for Ke1.} Kf3 {[%cal Rc2c1]} 53. Ke1 Kxe3 {[%cal Rc2c1]} 54. Kd1 {Threatening mate with Rb3+.} Rg2 55. Rb4 {Kc1 is the strong threat.} Kd3 $1 {[%cal Rg2g1]} 56. Rb3+ Ke4 57. Rb4+ Kd3 $1 {[%cal Rg2g1]} 58. Ke1 {Threatens to win with Kf1.} g6 $2 {[%mdl 8192]} (58... Ke3 $11 {and Black stays safe.} 59. Kf1 Rc2) 59. Kf1 $1 $18 {[%cal Rf1g2]} Rc2 {intending ...Ke3.} 60. f5 $1 gxf5 61. g6 {[%cal Bg5g6,Bg6g7][%mdl 32]} Rc6 $2 {[#]} (61... Rc7 62. Kf2 Rg7 63. Rb3+ Ke4 64. Re3+ Kd5) 62. Rb3+ $1 Ke4 {[#]} 63. Rg3 $1 Rc1+ 64. Ke2 Rc8 65. g7 Rg8 66. b4 (66. Rg6 $142 f4 67. Rg1 f3+ 68. Kf2 Ke5 69. Rg4 Ke6 70. Kxf3 Kd6 71. Ke4) 66... Kd5 67. Kf3 Kc4 68. Kf4 Kd5 {Accuracy: White = 64%, Black = 42%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Frolov, Artur"]
[Black "Lin, Yi"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2430"]
[BlackElo "2359"]
[Annotator "TA"]
[PlyCount "140"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,140,2,14,-2,15,12,18,6,16,6,14,7,33,32,42,44,87,91,91,90,129,127,126,98,107,85,120,100,81,22,74,76,90,86,75,80,94,96,98,97,97,97,98,99,101,101,101,101,107,56,64,0,148,148,148,148,148,148,155,154,153,148,160,158,148,153,152,141,141,175,168,167,152,135,218,211,385,356,942,901,864,809,785,583,580,118,688,239,601,185,185,185,175,185,180,182,276,181,243,4,4,3,3,3,3,3,3,3,3,3,3,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. e3 O-O 7. Bc4 Nxc3 8. bxc3 c5 9. O-O Qc7 10. Qe2 Nc6 {LiveBook: 43 Games} 11. Bd2 {D94: Grünfeld: 4 Nf3 Bg7 5 e3} (11. Rd1 b6 12. Rb1 Bb7 13. Ba6 Bxa6 14. Qxa6 Rfd8 15. Qe2 Na5 16. e4 cxd4 17. cxd4 e6 18. Bg5 Rd7 {0-1 (53) Tregubov,P (2585)-Tari,A (2584) Doha 2016}) 11... Na5 $146 ({Predecessor:} 11... Bg4 12. Rac1 a6 13. h3 Bd7 14. Rfd1 Na5 15. Bd3 Rad8 16. c4 e6 17. Qe1 Nc6 18. d5 Ne5 19. Nxe5 Bxe5 {0-1 (43) Gorelov,V (1747)-Matveev,M Tambov 2015}) 12. Bd3 b6 13. Rac1 Bb7 14. e4 e6 15. h4 {[%cal Bh2h4,Bh4h5,Bh5h6][%mdl 32]} Rac8 16. h5 Rfd8 17. Bg5 $36 {[%mdl 2048] White fights for an advantage.} Rd7 18. h6 Bh8 19. Rfd1 Qb8 20. Bb5 Bc6 21. Bxc6 Nxc6 22. d5 exd5 23. exd5 Ne5 24. Nxe5 (24. c4 $16) 24... Qxe5 (24... Bxe5 $11 {remains equal.} 25. Qg4 Qd6) 25. Qg4 $1 $16 {[%cal Rg4d7]} Qf5 26. Qxf5 gxf5 27. c4 Be5 28. g3 f6 29. Be3 Kf7 30. Kg2 Re8 31. Kf3 Kg6 32. a4 Bd6 33. a5 Re4 34. axb6 (34. Rc2 $16) 34... axb6 $14 35. Ra1 (35. Rc2 $14) 35... Bf8 (35... Rxc4 $11 36. Ra8 Be5) 36. Ra8 $16 Bxh6 37. Bxh6 Kxh6 {[%mdl 4096] Endgame KRR-KRR} 38. Rg8 {Threatening mate with Rh1+.} Rg7 39. Rxg7 Kxg7 {KR-KR} 40. d6 {[%cal Bd5d6,Bd6d7][%mdl 32] And now d7 would win.} Re8 41. d7 Rd8 42. Kf4 Kf7 43. Rd6 Ke7 44. Rxb6 Rxd7 45. Kxf5 Rd4 46. Re6+ Kf7 (46... Kd7 $16 {is a better defense.}) 47. Rxf6+ $18 Kg7 $2 (47... Kg8 48. Rc6 Rxc4) 48. Rc6 Rxc4 $2 (48... Rd3 49. Rc7+ (49. Rxc5 Rf3+ 50. Ke4 Rxf2 $18) 49... Kh6) 49. Rc7+ Kg8 50. Kf6 {[%cal Rc7c8]} h6 51. Kg6 $1 {[%cal Rc7c8]} Kf8 52. Rf7+ $2 (52. f4 $18 {is the precise move to win.} Rc3 53. g4 (53. Kxh6 Rxg3 54. Rxc5 Kf7 $11)) 52... Kg8 $2 {[%mdl 8192]} (52... Ke8 $16) 53. Ra7 $2 (53. f4 Rc3 54. g4) 53... Kf8 $2 (53... Rg4+ 54. Kxh6 c4) 54. Kxh6 $2 (54. f4 Rc3 55. g4 (55. Kxh6 Rxg3 56. f5 c4 $11)) 54... Rc3 55. Kg5 Rf3 {[#]} 56. Ra2 $1 c4 57. Kg4 Rd3 (57... Rf7 $142 58. Rc2 c3) 58. f4 Ke7 {[#]} (58... Rd5 $142 59. Rc2 Rd4) 59. f5 $2 (59. Re2+ $1 $18 Kf7 60. Re1) 59... c3 $11 {The position is equal.} 60. Re2+ Kf7 61. Kf4 Rd4+ 62. Kg5 Rc4 {...c2 is the strong threat.} 63. Rc2 Kg7 64. g4 Kf7 65. f6 Rc5+ 66. Kf4 Kxf6 67. Ke4 Kg5 68. Kd4 Rc8 69. Rxc3 Rxc3 70. Kxc3 Kxg4 {Accuracy: White = 57%, Black = 46%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Plischki, Sebastian"]
[Black "Laverton, Christian"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2426"]
[BlackElo "2147"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,121,16,22,33,34,29,6,25,19,32,0,0,-8,0,-64,-54,-64,-67,-67,-67,-79,-77,-68,-76,-88,-60,-56,-58,-52,-52,-126,-128,-124,-122,-118,-118,-127,-96,-100,-99,-95,-89,-99,-95,-126,-78,-76,-19,-31,-23,-21,-23,-54,-8,-8,0,0,0,0,0,-4,-4,-3,0,0,0,0,45,8,25,23,18,21,23,22,33,37,121,74,70,75,90,48,101,93,141,125,131,67,67,67,208,153,208,208,208,208,208,208,152,116,4037,4037,29977,29978,29978,29979,29979,29980,29983,29984]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. c4 c6 5. Qb3 Qb6 6. d3 e6 {A11: English Opening: 1...c6} 7. Be3 {LiveBook: 28 Games} (7. O-O Nbd7 8. Qxb6 axb6 9. cxd5 exd5 10. Nd4 Bg6 11. Nd2 Bc5 12. N2b3 O-O 13. Bd2 Rfe8 14. Rfe1 {0-1 (74) Maghsoodloo,P (2636)-Sargissian,G (2680) Abu Dhabi 2018}) 7... Qa6 8. cxd5 exd5 {White is slightly better.} 9. Nc3 Nbd7 10. O-O Be7 11. Rac1 $146 ({Predecessor:} 11. h3 h6 12. Nd4 Bh7 13. f4 O-O 14. Nf3 {½-½ (52) Mueller,P (2220)-Kjartansson,G (2456) Douglas 2017}) 11... O-O 12. Bd4 Rad8 13. e4 (13. Qa4 $11) 13... dxe4 $15 14. dxe4 Nxe4 15. Nxe4 Bxe4 {[%cal Bf5e4,Be4d5,Bd5e6][%mdl 32]} 16. Rfe1 Bd5 17. Qc3 Bf6 18. Bf1 Bxd4 19. Nxd4 Qb6 20. Nf5 {[%csl Gf5][%cal Rc3g7]} Nf6 21. g4 (21. a4 $15) 21... Be6 $17 22. Nxg7 Kxg7 ({But not} 22... Nxg4 23. Rc2 $15) 23. g5 Qd4 {Hoping for ...Qxc3.} 24. gxf6+ Qxf6 25. Bc4 Qxc3 26. Rxc3 Kf6 27. Rf3+ Ke7 $1 28. Rh3 Rg8+ 29. Kf1 {[#]} Rg7 (29... Rd1 $1 $17 {[%cal Rd1e1][%mdl 512]} 30. Bxe6 (30. Rxd1 Bxh3+) 30... Rg1+ {[%mdl 64] Deflection} 31. Kxg1 Rxe1+ 32. Kg2 Rxe6) 30. Bxe6 $1 $11 fxe6 {[%mdl 4096] Endgame KRR-KRR} 31. Rh6 Rd6 32. Re3 Rf7 33. Ke2 Rd5 34. Rhxe6+ Kd7 35. R6e5 Rd6 36. Rh3 Rdf6 37. f3 $1 Re6 38. Rxe6 Kxe6 {KR-KR} 39. Ke3 a5 40. Ke4 Rg7 41. f4 Re7 42. Rh6+ Kf7+ 43. Kf5 Kg7 44. Rd6 c5 (44... b5 $14) 45. Rb6 a4 46. a3 Rc7 47. Ke6 Rf7 {[#]} (47... c4 $14) 48. Ke5 $1 $16 h5 49. h4 Rc7 50. Kf5 (50. f5 $16) 50... c4 $1 $14 51. Kg5 Rc5+ (51... c3 $14 52. bxc3 Rxc3) 52. f5 $16 c3 (52... Rc7 $16 53. Rb4 (53. Kxh5 c3 $16) 53... Kf7 54. Rxa4 c3 55. bxc3 Rxc3) 53. Rxb7+ $18 Kf8 {aiming for ...c2.} 54. bxc3 Rxc3 55. Kxh5 Rxa3 56. Kg6 {Rb8+ is the strong threat.} Rb3 $2 {[%mdl 8192]} (56... Rg3+ $16 57. Kf6 Kg8) 57. Ra7 a3 58. Ra8+ {White mates.} Ke7 59. f6+ {[%cal Bf5f6,Bf6f7][%mdl 32]} Ke6 60. Re8+ Kd7 61. f7 {Accuracy: White = 66%, Black = 43%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Lalic, Bogdan"]
[Black "Pniaczek, Marek"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2418"]
[BlackElo "2146"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,93,20,21,-31,2,-73,6,0,0,0,13,-16,-16,-16,-17,-21,0,0,0,-5,8,0,0,-8,-4,-13,21,12,8,18,97,54,83,82,81,85,95,97,105,84,93,53,37,39,84,89,135,144,148,138,293,290,291,286,417,366,366,366,370,370,370,357,364,339,508,508,508,508,508,508,634,619,750,546,551,545]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 a6 5. Nf3 Bf5 6. Ne5 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} (6. Qb3 b5 7. c5 a5 8. Nh4 Bc8 9. f4 g6 10. Bd3 Nh5 11. Nf3 Bf5 12. e4 a4 13. Qc2 dxe4 14. Bxe4 Bxe4 15. Nxe4 {0-1 (53) Gelfand,B (2703)-Grandelius,N (2655) Batumi 2018}) 6... Nbd7 7. Qb3 Qc7 8. Nxd7 Qxd7 9. Na4 Qc7 10. Nb6 Rd8 {LiveBook: 3 Games} 11. Bd2 (11. cxd5 $11 Rd6 12. Bd2) 11... e6 12. Rc1 $146 {[#]} (12. c5 $11) ({Predecessor:} 12. Ba5 Bd6 13. c5 Be7 {0-1 (47) Fridman,D (2566)-Kononenko,T (2442) Port Erin 2005}) 12... Qb8 (12... Bd6 $1 $17) 13. Bb4 h5 14. Be2 Rh6 15. Qa3 Bxb4+ 16. Qxb4 Rg6 17. Bf3 h4 18. Na4 $40 {[%mdl 128] White attacks.} Qc7 19. Nc5 Rb8 20. cxd5 exd5 21. Rc3 {[%cal Bc1c3,Bc3b3,Bb3b6][%mdl 32]} a5 22. Qa3 Bg4 23. Nd3 Bxf3 24. gxf3 Nh5 (24... Ng8 $11 {keeps the balance.}) 25. Qc5 {Strongly threatening Qxd5!} Rd8 26. Rb3 Re6 27. Qb6 Qxb6 28. Rxb6 Rb8 29. Nc5 Re7 30. b4 axb4 31. O-O Kd8 32. Rb1 Nf6 33. R1xb4 Kc8 {[#]} 34. a4 $1 {[%cal Ba2a4,Ba4a5][%mdl 32]} Ne8 $2 (34... Rc7 $16 {is a better defense.}) 35. a5 $18 Nd6 {Threatening ...Nc4.} 36. a6 Rc7 (36... Kc7 $142 37. axb7 Nb5) 37. axb7+ Rbxb7 38. Nxb7 Nxb7 {[%mdl 4096] Endgame KRR-KRN} 39. Kg2 Nd6 40. Rb8+ Kd7 41. Rg8 Ke6 (41... g6 $142 42. Ra8 f6) 42. Rxg7 {White is clearly winning.} Nf5 43. Rg4 Rc8 44. h3 c5 45. Rb6+ Ke7 46. dxc5 Rxc5 47. Rf4 {Precision: White = 44%, Black = 36%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Spiess, Gunter"]
[Black "Riha, Vojtech"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2414"]
[BlackElo "2145"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,73,56,38,54,50,60,52,65,61,56,60,113,104,174,163,157,147,138,124,183,183,176,185,162,168,150,129,212,181,340,102,200,238,479,458,483,488,485,482,470,472,484,487,468,452,452,351,871,747,886,866,845,849]} 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 g6 5. e4 Bg7 6. Be3 Nf6 7. Nc3 d6 8. Be2 O-O 9. O-O Bd7 10. Nc2 Rc8 11. f3 Re8 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0} (11... a6 12. Qd2 Ne5 13. Na3 Re8 14. Rab1 Qc7 15. Rfc1 Qa5 16. Rc2 {½-½ (16) Bacrot,E (2695)-Gharamian,T (2672) Belfort 2012}) 12. Qd2 {LiveBook: 3 Games} Qa5 13. Rab1 $146 ({Predecessor:} 13. Rfc1 a6 14. Rab1 Ne5 15. b4 Qd8 16. Na3 Be6 17. Nd5 Nxd5 18. cxd5 Bd7 19. h3 {1-0 (41) Shariyazdanov,A (2575)-Vorobiov,E (2552) Sochi 2004}) 13... Ne5 {White is slightly better.} 14. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Qc7 15. Na3 $1 a6 16. Rfc1 e6 (16... Qb8 $14) 17. h3 Nh5 (17... Bf8 $16) 18. f4 $18 Nc6 19. b5 {Bxh5 is the strong threat.} Ne7 20. Na4 Ng3 {[#]} (20... axb5 $16 21. cxb5 (21. Nxb5 Bxb5 22. cxb5 Qd8 $14) 21... Qb8) 21. Bf3 $1 f5 22. e5 dxe5 23. Bb6 Qb8 {[#]} 24. Nc5 $1 $36 {[%cal Rc5d7][%mdl 2048] Black is under strong pressure.} Rxc5 (24... Bxb5 $16 {might work better.} 25. cxb5 e4) 25. Bxc5 e4 $2 (25... Qc8 26. Bf2 e4) 26. Bd1 $2 (26. Qxd7 $18 {has better winning chances.} exf3 27. Bxe7 f2+ 28. Kh2 Rxe7 29. Qxe7 Qxf4 30. Qxe6+ {[%mdl 64] Double Attack} Kf8 31. Qc8+ {[%mdl 64] Double Attack} Ke7 32. Qc5+ (32. Qxb7+ $2 Kf6 $19) 32... Kf6 33. Qxf2 (33. Qb6+ $2 Kg5 $19) 33... Qxf2 34. bxa6 bxa6 35. Nc2) 26... Qc8 (26... Qc7 $16 {was worth a try.} 27. Bf2 Nh5) 27. Bf2 Nh5 $2 (27... e3 {was called for.} 28. Qxe3 (28. Bxe3 Ne4 $16) 28... Ne4) 28. Bxh5 gxh5 29. Rd1 Bxb5 30. cxb5 Nd5 31. Rbc1 Qb8 32. Be3 Bh6 33. Rf1 Rd8 34. Rcd1 e5 $2 {[#]} (34... Bf8 35. Nc2 axb5) 35. Bb6 $1 {[%mdl 576] Pin. White is clearly winning.} Rd7 (35... Nxb6 36. Qxd8+) 36. Qxd5+ Rxd5 37. Rxd5 {Accuracy: White = 73%, Black = 22%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Roeder, Matthias"]
[Black "Haase, Pavel"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2396"]
[BlackElo "2141"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,84,25,21,20,16,24,23,59,51,59,41,41,25,64,73,92,97,97,91,138,125,141,130,129,98,92,62,52,0,8,22,48,0,103,101,97,83,104,99,135,69,76,67,64,69,72,75,175,192,165,95,104,43,40,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 c5 3. c4 Nc6 4. Bg2 e5 5. Nc3 Be7 (5... d6 6. O-O Be7 7. e3 O-O 8. d4 cxd4 9. exd4 Bg4 10. Ne2 e4 11. Nd2 Nxd4 12. f3 exf3 13. Nxf3 Nxf3+ 14. Bxf3 Bxf3 15. Rxf3 Rc8 {0-1 (33) Ruck,R (2561)-Saric,I (2652) Tallinn 2016}) 6. d3 {LiveBook: 5 Games. A34: Symmetrical English: 2 Nc3, lines with ...d5} O-O 7. Nd2 Ne8 $146 ({Predecessor:} 7... d6 8. Nf1 Be6 9. Ne3 Qd7 10. Ned5 Bd8 11. h4 h6 12. Rb1 a6 13. a3 {½-½ (28) Schoen,A (2479)-Staniszewski,J (2500) ICCF email 2012}) 8. O-O {White has an edge.} f5 9. a3 Nc7 10. Rb1 a5 11. Nd5 Ne6 12. e3 g5 13. b3 d6 14. Bb2 Bf6 15. Nxf6+ Rxf6 16. f4 gxf4 17. gxf4 Rg6 18. Qh5 exf4 19. Kh1 (19. Qxf5 Ng5 $17) (19. exf4 $14 Bd7 20. Kh1 (20. Qxf5 Ncd4 $11)) 19... Qg5 ({Of course not} 19... Rg5 $6 20. Qh3 $16) 20. Qxg5 Rxg5 21. exf4 Rg4 (21... Rg6 $11 {remains equal.}) 22. Bh3 $16 Rxf4 23. Bxf5 Rxf1+ 24. Rxf1 Ncd4 25. Rg1+ (25. Ne4 $16) 25... Kf7 $14 26. Bxh7 Bd7 27. Be4 Bc6 28. Bd5 Bxd5+ (28... Ke7 $16 {was necessary.}) 29. cxd5 $18 Nc7 30. Bxd4 (30. Rg5 $18) 30... cxd4 {[%mdl 4096] Endgame KRN-KRN} 31. Rg4 (31. Nc4 $16) 31... a4 32. Rxd4 axb3 {The position is equal.} 33. Rb4 Rxa3 {[#] Threatens to win with ...Ra1+.} 34. Rxb7 {Nc4 is the strong threat.} Ra1+ 35. Kg2 Ra2 36. Rxc7+ $11 {KRN-KR} Kf6 37. Kf3 Rxd2 {[%mdl 64] [#] Double Attack} 38. Ke4 Rxh2 (38... b2 $5 39. Rb7 $8 Rxh2 $11) 39. Rb7 Rh4+ 40. Ke3 Ke5 41. Rxb3 Rh3+ 42. Kd2 {Strongly threatening d4+!} Kxd5 {Accuracy: White = 64%, Black = 43%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Zhang, Ziji"]
[Black "Naumkin, Igor"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2387"]
[BlackElo "2418"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,89,32,26,-10,-8,-8,-5,-6,-4,-12,-12,-14,-12,-35,-23,-23,-18,-27,-10,-32,-21,-37,-51,-46,-31,-57,-4,-16,-2,-16,-9,-25,0,0,77,70,81,48,57,14,27,22,50,46,52,0,0,0,0,0,100,89,114,45,78,12,10,82,70,0,423,414,1059,1044,1034,890,1077,1004,919,887,910,827,29994,29995,29996,939]} 1. d4 e6 2. c4 f5 3. Nc3 Bb4 4. Nf3 Nf6 5. Qb3 Qe7 6. g3 b6 {A85: Dutch Defence: 2 c4 Nf6 3 Nc3} 7. Bg2 Bb7 8. O-O Bxc3 {LiveBook: 19 Games. White is slightly better.} 9. bxc3 (9. Qxc3 O-O 10. Rd1 d6 11. Bg5 Nbd7 12. d5 h6 13. Bxf6 Rxf6 14. b4 {½-½ (93) Kovalenko,I (2572)-Wang,H (2733) Sochi 2012}) 9... O-O 10. a4 $146 ({Predecessor:} 10. Ba3 d6 11. c5 Ne4 12. Rac1 Nc6 13. cxd6 cxd6 14. c4 {0-1 (39) Sapunov,E (2498)-Ulybin,M (2580) Samara 2000}) 10... Be4 11. Ba3 d6 12. c5 Nc6 13. cxd6 cxd6 14. Nd2 Bxg2 15. Kxg2 Na5 16. Qa2 Rfd8 17. Kg1 Rac8 18. c4 Qf7 19. Rac1 e5 20. Qb2 e4 (20... Ne4 $15 21. Nxe4 fxe4 22. dxe5 Nxc4) 21. Qb5 Nc6 22. Bb2 Qh5 23. Rfe1 a6 (23... e3 {feels hotter.} 24. fxe3 Qg5 25. Qb3 Na5 26. Qd3 Ng4) 24. Qb3 d5 {[#]} (24... Na5 $11 25. Qxb6 Ng4) 25. cxd5 $1 $16 Nxd5 {[#]} 26. Nc4 $1 {[%cal Rc4b6]} Rb8 27. Ne3 Na5 28. Qa3 Qf7 29. Nxd5 Rxd5 30. Qe3 (30. Rc2 $14) 30... h6 $11 31. Qf4 Rbd8 32. Rc7 R5d7 (32... Qe8 $11 {remains equal.}) 33. Rec1 $16 Kh7 34. Qe5 $36 {[%mdl 2048] Black is under pressure.} (34. g4 $16) 34... Rxc7 35. Rxc7 (35. Qxc7 $16 Qd5 36. e3 (36. Qxb6 Nc4 $11)) 35... Rd7 $11 36. Rc8 Re7 37. Qd6 ({Better is} 37. Qb8 $14 Qb3 38. Kg2) 37... Re6 $2 {[%mdl 8192]} (37... e3 $1 $11 {and Black is okay.}) 38. Qd8 $18 f4 (38... Rc6 $142 39. Rb8 Nc4) 39. d5 fxg3 40. hxg3 {[%cal Bh2g3,Bg3g4][%mdl 32]} e3 41. f3 ({Weaker is} 41. dxe6 Qxf2+ 42. Kh1 Qf1+ 43. Kh2 Qxe2+ 44. Kh3 Qh5+ 45. Kg2 Qe2+ 46. Kh3 Qh5+ 47. Qh4 Qf5+ 48. Qg4 Qf1+ 49. Kh2 (49. Kh4 $2 Qh1+ 50. Qh3 g5+ 51. Kg4 Qe4+ {[%mdl 64] Double Attack} 52. Kh5 Qg6+ 53. Kg4 Qxe6+ {[%mdl 64] Double Attack} 54. Kf3 Qxh3 $19) 49... Qf2+ 50. Kh1 (50. Kh3 Qf1+ 51. Kh2 Qf2+ 52. Kh1 Qf1+ 53. Kh2 $11) 50... Qf1+ 51. Kh2 Qf2+ 52. Kh1 (52. Kh3 Qf1+ 53. Kh2 $11) 52... Qf1+ 53. Kh2 $11) 41... Re7 42. Qh8+ Kg6 43. Rg8 Qxd5 44. Rxg7+ {[%mdl 64] Double Attack} Kh5 45. g4+ {Accuracy: White = 57%, Black = 36%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Vojta, Tomas"]
[Black "Kulkarni Bhakti"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2351"]
[BlackElo "2303"]
[Annotator "NA"]
[PlyCount "89"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c3 {[%emt 0:00:34]} g6 {[%emt 0:00:30]} 3. Nf3 {[%emt 0:01:25]} Bg7 {[%emt 0:00:14]} 4. Bg5 {[%emt 0:00:33]} O-O {[%emt 0:01:34]} 5. Nbd2 {[%emt 0:01:02]} d6 {[%emt 0:03:04]} 6. e4 {[%emt 0:02:23]} h6 {[%emt 0:00:21]} 7. Bh4 {[%emt 0:02:56]} c5 {[%emt 0:04:32]} 8. dxc5 {[%emt 0:06:16]} dxc5 {[%emt 0:00:23]} 9. Qc2 {[%emt 0:00:12]} Nc6 {[%emt 0:01:42]} 10. Bc4 {[%emt 0:04:24]} Na5 {[%emt 0:10:17]} 11. Be2 {[%emt 0:04:27]} Be6 {[%emt 0:00:51]} 12. O-O {[%emt 0:01:06]} Nh5 {[%emt 0:02:54]} 13. Nb3 {[%emt 0:08:54]} Nxb3 {[%emt 0:05:51]} 14. axb3 {[%emt 0:00:08]} Nf4 {[%emt 0:13:39]} 15. Bc4 {[%emt 0:01:21]} Bxc4 {[%emt 0:00:58]} 16. bxc4 {[%emt 0:00:05]} Qc7 {[%emt 0:06:05]} 17. Bg3 {[%emt 0:01:49]} Rfd8 {[%emt 0:01:00]} 18. Rad1 {[%emt 0:07:01]} g5 19. h3 {[%emt 0:07:00]} Qc6 {[%emt 0:04:29]} 20. Rfe1 {[%emt 0:06:51]} Qb6 {[%emt 0:07:55]} 21. Bxf4 {[%emt 0:03:45]} gxf4 {[%emt 0:00:05]} 22. e5 {[%emt 0:04:11]} e6 {[%emt 0:03:01]} 23. Rb1 {[%emt 0:04:31]} a5 {[%emt 0:03:48]} 24. Qc1 {[%emt 0:01:26]} Rd3 {[%emt 0:04:51]} 25. Qxf4 {[%emt 0:00:06]} Rad8 {[%emt 0:00:02]} 26. Nh2 {[%emt 0:05:59]} h5 {[%emt 0:02:37]} 27. Qh4 {[%emt 0:03:37]} Qb3 {[%emt 0:00:20]} 28. Qxh5 {[%emt 0:04:53]} Qxc4 {[%emt 0:00:24]} 29. Nf3 {[%emt 0:00:56]} Qf4 {[%emt 0:00:47]} 30. Qg4 {[%emt 0:00:30]} Qxg4 {[%emt 0:00:53]} 31. hxg4 {[%emt 0:05:27]} R3d5 {[%emt 0:02:18]} 32. Kf1 {[%emt 0:03:34]} c4 {[%emt 0:03:32]} 33. Ra1 {[%emt 0:02:17]} Rb5 {[%emt 0:01:01]} 34. Re2 {[%emt 0:02:05]} Rc5 {[%emt 0:00:26]} 35. Ke1 {[%emt 0:00:56]} Kf8 {[%emt 0:01:40]} 36. Rd1 {[%emt 0:00:25]} Rxd1+ {[%emt 0:00:12]} 37. Kxd1 {[%emt 0:00:01]} b5 {[%emt 0:00:22]} 38. Kc2 {[%emt 0:00:36]} Ke7 {[%emt 0:00:31]} 39. Re4 {[%emt 0:00:53]} Kd7 {[%emt 0:01:23]} 40. Ng5 {[%emt 0:04:33]} Rxe5 {[%emt 0:00:30]} 41. Rxe5 {[%emt 0:30:30]} Bxe5 {[%emt 0:30:30]} 42. Nxf7 {[%emt 0:00:30]} Bf6 {[%emt 0:13:53]} 43. g5 {[%emt 0:00:00]} Ke7 {[%emt 0:00:00]} 44. Nd6 {[%emt 0:00:00]} Bxg5 {[%emt 0:00:00]} 45. Nxb5 {[%emt 0:00:00]} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Cerveny, Petr"]
[Black "Kacharava, Nikolozi"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2318"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,112,22,11,72,75,68,89,82,69,61,60,52,60,59,48,73,42,35,15,49,0,11,11,18,0,0,0,11,0,0,0,0,0,0,0,3,-19,-14,-21,-21,-20,5,0,0,0,0,-6,5,6,6,7,10,0,39,0,0,0,0,0,8,0,60,57,74,66,147,141,154,159,149,40,24,25,29,8,13,15,26,0,0,-8,-8,-8,-8,-828,-822,-738,-683,-29960,-29938,-29964,-29967,-29956,-29970,-29973,-29972,-29972,-29973,-29973,-29970,-5093,-5093]} 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 {LiveBook: 11 Games} Bf5 (7... Nf6 $11 {keeps the balance.}) (7... Nd6 8. Nc3 c6 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}) 8. Nc3 $16 {White is better.} Nxc3 9. dxc3 Bxd3 10. cxd3 (10. Qxd3 {feels hotter.} O-O 11. Bf4 c6 12. Rad1 Nd7 13. c4) 10... O-O 11. Qb3 b6 12. Bf4 $146 ({Predecessor:} 12. d4 c6 13. Ne5 Qc7 {1-0 (56) Martin Rueda,D (2223)-De la Barrera Montenegro,E Madrid 2002}) 12... Bf6 13. d4 Qd7 14. a4 Nc6 {[%cal Bb8c6,Bc6a5,Ba5c4][%mdl 32]} 15. Re2 Rfe8 16. Rae1 {Qxd5! is the strong threat.} Rxe2 17. Rxe2 Na5 18. Qb5 c6 19. Qa6 h6 20. h3 Nc4 21. Bg3 Qc8 22. Qxc8+ Rxc8 23. Kf1 c5 24. Bf4 cxd4 25. Nxd4 Bxd4 26. cxd4 $11 {[%mdl 4096] Endgame KRB-KRN} a6 27. Ke1 f6 28. Kd1 g5 29. Bc1 Na5 30. Re6 Rc6 31. Re8+ Kf7 32. Rd8 Ke6 33. Rh8 Rc4 34. Be3 Kf7 35. Rh7+ Kg6 36. Rd7 Kf5 (36... h5 $11) 37. Rxd5+ $14 Ke4 38. Rd6 Rxa4 (38... Rb4 $14) 39. Rxf6 $16 ({Don't play} 39. Rxb6 Nc4 $16) 39... Rb4 40. Kc2 Rc4+ {[#]} 41. Kb1 ({White has to play} 41. Kd2 $1 $16) 41... Rc6 $14 42. Rxc6 Nxc6 $11 {[#] KB-KN} 43. d5 $1 {[%mdl 512]} Kxd5 44. Bxb6 Nb4 $1 45. Kc1 Nd3+ 46. Kb1 Nf4 47. g3 Nxh3 {Threatens to win with ...Ke4.} 48. Ka2 $2 {[%mdl 8192]} (48. f3 $11) 48... Ke4 $19 49. f4 {[#]} Nxf4 $1 {[%mdl 512]} 50. gxf4 Kxf4 {KB-K3P} 51. Kb3 h5 {[%cal Bh6h5,Bh5h4,Bh4h3][%mdl 32]} 52. Kb4 h4 53. Ka5 h3 54. Kxa6 Kf3 55. Bc7 g4 {[%cal Bg5g4,Bg4g3][%mdl 32]} 56. b4 g3 {Precision: White = 50%, Black = 61%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Pushkov, Nikolai"]
[Black "Mis, Mieszko"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2309"]
[BlackElo "2242"]
[Annotator "NA"]
[PlyCount "66"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:25]} Bg7 {[%emt 0:00:03]} 4. Nc3 {[%emt 0:00:32]} d5 {[%emt 0:00:07]} 5. cxd5 {[%emt 0:01:23]} Nxd5 {[%emt 0:00:06]} 6. Bd2 {[%emt 0:00:27]} O-O {[%emt 0:05:24]} 7. e4 {[%emt 0:00:23]} Nxc3 {[%emt 0:00:49]} 8. Bxc3 {[%emt 0:00:30]} c5 {[%emt 0:00:36]} 9. d5 {[%emt 0:01:25]} Bxc3+ {[%emt 0:05:20]} 10. bxc3 {[%emt 0:00:02]} e6 {[%emt 0:00:17]} 11. Be2 {[%emt 0:03:49]} exd5 {[%emt 0:01:46]} 12. exd5 {[%emt 0:00:04]} Nd7 {[%emt 0:02:42]} 13. O-O {[%emt 0:00:51]} Nf6 {[%emt 0:01:13]} 14. c4 {[%emt 0:00:39]} Re8 {[%emt 0:02:19]} 15. Bd3 {[%emt 0:04:32]} Bg4 {[%emt 0:02:51]} 16. h3 {[%emt 0:00:09]} Bxf3 {[%emt 0:00:04]} 17. Qxf3 {[%emt 0:00:03]} Qd6 {[%emt 0:00:32]} 18. Rfe1 {[%emt 0:02:31]} Kg7 {[%emt 0:02:51]} 19. Bf1 {[%emt 0:05:07]} b6 {[%emt 0:05:46]} 20. g3 {[%emt 0:00:53]} h5 {[%emt 0:03:46]} 21. h4 {[%emt 0:02:40]} Re5 {[%emt 0:23:13]} 22. Qc3 {[%emt 0:02:44]} Rae8 {[%emt 0:01:32]} 23. Rxe5 {[%emt 0:00:45]} Qxe5 {[%emt 0:04:03]} 24. Qxe5 {[%emt 0:00:20]} Rxe5 {[%emt 0:00:02]} 25. a4 {[%emt 0:00:18]} Re4 {[%emt 0:04:50]} 26. a5 {[%emt 0:00:29]} Nd7 {[%emt 0:08:49]} 27. axb6 {[%emt 0:00:40]} axb6 {[%emt 0:00:30]} 28. Rb1 {[%emt 0:03:24]} Ne5 {[%emt 0:05:00]} 29. Rxb6 {[%emt 0:01:22]} Nxc4 {[%emt 0:00:09]} 30. Bxc4 {[%emt 0:01:08]} Rxc4 {[%emt 0:00:03]} 31. Rc6 {[%emt 0:00:10]} Rc3 {[%emt 0:01:30]} 32. Kf1 {[%emt 0:01:00]} c4 {[%emt 0:00:24]} 33. Ke2 {[%emt 0:00:11]} Rd3 {[%emt 0:00:11]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Kulhanek, Tomas"]
[Black "Kvaloy, Aksel Bu"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "2303"]
[BlackElo "1914"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,119,26,20,-22,0,0,46,35,31,26,33,44,48,46,40,22,70,67,83,71,85,100,156,154,166,64,58,60,68,0,0,0,72,85,62,79,76,72,97,66,55,9,9,9,9,9,10,0,0,0,13,0,0,0,111,90,104,95,105,97,143,153,329,319,286,191,401,258,286,278,286,272,239,37,57,41,191,177,892,892,1368,665,597,573,419,3799,29969,29970,29970,29970,29970,29971,29966,29963,29968,29970,29967,29966,29979,29980,29982,29983,29980,29983,29982,29984,29983,29984]} 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 O-O 6. a3 Na6 {B09: Pirc Defence: Austrian Attack} (6... Bg4 7. Be2 Bxf3 8. Bxf3 e5 9. fxe5 dxe5 10. d5 c6 11. dxc6 Nxc6 12. Qxd8 Rfxd8 13. Bg5 Nd4 14. O-O-O {0-1 (52) Anand,V (2776)-Nepomniachtchi,I (2751) Moscow 2018}) 7. Be3 c5 {LiveBook: 8 Games} 8. Be2 $146 ({Predecessor:} 8. Bxa6 cxd4 9. Bxd4 bxa6 10. O-O Bb7 11. Re1 Qa5 12. Qd2 Rfe8 13. e5 dxe5 14. fxe5 {1-0 (72) Forcen Esteban,D (2498)-Gonzalez Diaz,J (2259) La Roda 2014}) 8... Ng4 {The position is equal.} 9. Bg1 Qa5 10. Qd2 cxd4 11. Nxd4 e5 $1 {[%cal Re5d4]} 12. Nb3 Qd8 13. O-O-O $36 {[%mdl 2048] Threatens to win with h3. White has good play.} exf4 14. Qxd6 Qg5 15. h4 Qh6 {...f3+ is the strong threat.} 16. Kb1 Be5 17. Qd3 Be6 (17... Nc7 $142) 18. Nd5 Rfd8 19. Nc5 (19. Qb5 $18 Bxd5 20. Rxd5 (20. exd5 Nc7 $14) 20... Rxd5 21. exd5) 19... Nxc5 $14 20. Bxc5 b6 21. Bd4 (21. Be7 $14 Re8 22. Qf3) 21... Bxd4 $11 22. Bxg4 Be5 (22... Bxg4 $11 23. Qxd4 Bxd1 24. Ne7+ Kf8 25. Qh8+ Kxe7 26. Qe5+ Kf8 27. Qh8+ Ke7 28. Qe5+ Kd7 29. Rxd1+ Kc8 30. Rxd8+ Kxd8 31. Qh8+ Ke7 32. Qe5+ (32. Qxa8 Qxh4 33. Qxa7+ Kf8 $11) 32... Kf8 33. Qh8+ Ke7 34. Qe5+ (34. Qxa8 Qxh4 35. Qxa7+ Kf8 $11) 34... Kf8 35. Qh8+ Ke7) 23. Bxe6 $16 fxe6 24. Qh3 Re8 25. Nb4 $1 Qg7 26. Nd3 h5 27. Nxe5 Qxe5 28. Rd7 Rac8 29. Qd3 Rc7 30. Rxc7 (30. Rd6 {with more complications.} Kg7 31. c3 Qf6 32. Ka2 Rf7 33. Rh2) 30... Qxc7 $11 {[%mdl 4096] Endgame KQR-KQR} 31. e5 Kg7 32. Qe4 Rf8 33. Rd1 Rd8 (33... Kh6 $11 {remains equal.}) 34. Rxd8 Qxd8 35. Qxf4 $16 {KQ-KQ} Qd1+ 36. Ka2 Qd5+ 37. c4 Qxg2 $2 (37... Qc6 $16 {keeps fighting.} 38. g3 b5) 38. Qf6+ $18 {[%mdl 64] Double Attack} Kh7 39. Qf7+ Kh8 $2 (39... Kh6) 40. Qxe6 {Black must now prevent Qf6+.} Qg4 41. Qf6+ Kh7 42. Qf7+ Kh8 43. Qc7 $2 (43. Qf8+ $18 Kh7 44. Qe7+ Kg8 45. Kb3 (45. Qxa7 Qxc4+ 46. Ka1 Qf1+ 47. Ka2 Qf7+ 48. Qxf7+ Kxf7 $19)) 43... a5 $14 44. Qd8+ Kh7 {[#]} (44... Kg7 $14) 45. Qd5 $1 $18 {Hoping for e6.} ({Worse is} 45. Qxb6 Qxc4+ 46. Qb3 Qxh4 $11) 45... Qxh4 $2 (45... Kg7 46. Kb3 Qxh4) 46. e6 Kg7 47. Qd7+ (47. c5 $142 bxc5 48. Qd7+ Kh6 49. e7 Qc4+ 50. Kb1 Qf1+ 51. Kc2 Qc4+ 52. Kd2 Qf4+ 53. Kc3 Qc1+ 54. Kb3 Qe3+ 55. Ka2) 47... Kh6 48. e7 {Strongly threatening Qe6.} Qxc4+ {[#]} 49. Kb1 $1 Qf1+ 50. Kc2 {White mates.} Qc4+ 51. Kd2 Qf4+ 52. Kd3 Qf1+ 53. Kc3 Qc1+ 54. Kb3 b5 55. Qe6 a4+ 56. Kb4 Qd2+ 57. Kc5 Qf2+ 58. Kc6 Qg2+ 59. Kb6 Qf2+ 60. Ka6 {Accuracy: White = 60%, Black = 48%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Liu, Zhaoqi"]
[Black "Krivonosov, Oleg"]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "2300"]
[BlackElo "2390"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,43,31,45,41,41,13,36,45,47,41,38,42,41,12,12,8,31,11,12,15,43,0,0,5,0,0]} 1. c4 e6 2. Nc3 d5 3. d4 Be7 4. cxd5 exd5 5. Bf4 Nf6 6. e3 O-O 7. Bd3 c5 8. dxc5 Bxc5 9. Nge2 Nc6 10. O-O {D35: Queen's Gambit Declined: Exchange Variation} Be6 {LiveBook: 18 Games} (10... d4 11. exd4 Nxd4 12. Be5 Nc6 13. Bxf6 Qxf6 {½-½ (13) Kuzubov,Y (2647)-Berkes,F (2678) Valjevo 2018}) 11. Na4 Bd6 12. Rc1 {White is slightly better.} Rc8 13. Nc5 Bxc5 14. Rxc5 Qe7 15. Rc1 {[#]} Nh5 $146 ({Predecessor:} 15... Qb4 16. a3 Qb6 17. Nc3 h6 {½-½ (28) Shomoev,A (2560)-Obolenskikh,D (2501) Ulan Ude 2014}) 16. Bb1 Rfd8 17. Qd2 (17. Qd3 {is more complex.} g6 18. Bh6 Qf6 19. Nd4 Nxd4 20. Qxd4 Qxd4 21. exd4 Ng7 22. f3) 17... Qf6 18. Ng3 Nxg3 19. Bxg3 d4 20. b3 dxe3 21. Qxe3 Bf5 22. Bxf5 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Gomes, Mary Ann"]
[Black "Xiang, Zeyu"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2296"]
[BlackElo "2440"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,67,-15,-9,-6,0,0,-2,16,10,10,22,26,0,12,-5,2,0,15,8,4,0,48,50,69,54,68,0,0,0,0,0,0,0,0,0,93,101,104,100,93,102,210,205,222,218,214,210,210,208,749,768]} 1. Nf3 d5 2. c4 d4 3. g3 c5 4. d3 Nc6 5. Bg2 Nf6 6. O-O e5 7. e3 Bd6 {A09: Réti Opening: 1 Nf3 d5 2 c4} (7... Be7 8. exd4 cxd4 9. Re1 Nd7 10. Na3 O-O 11. Nc2 a5 12. b3 f6 13. Nd2 Nc5 14. Ne4 Bf5 15. Nxc5 Bxc5 {½-½ (31) Radjabov,T (2741)-Harikrishna,P (2738) Palma de Mallorca 2017}) 8. exd4 cxd4 9. a3 a5 10. Bg5 {LiveBook: 3 Games} h6 11. Bxf6 Qxf6 12. Nbd2 O-O (12... Bc7 {seems wilder.} 13. Re1 O-O 14. c5 Bg4 15. h3 Bf5) 13. Ne4 Qd8 $146 14. Nxd6 Qxd6 15. Re1 Bg4 16. h3 Bh5 17. Qd2 Rfe8 18. Nh4 a4 19. Be4 Ra7 20. f4 exf4 21. g4 $36 {[%mdl 2048] And now Nf5 would win. White has good play.} Bg6 22. Bxg6 ({Better is} 22. Nxg6 $14 fxg6 23. Bd5+ Kf8 24. Rxe8+ Kxe8 25. Re1+ Kd7 26. Qg2) 22... Rxe1+ $11 23. Qxe1 {Intending Qe8+ and mate.} fxg6 24. Qe8+ Kh7 {Hoping for ...Ne5.} 25. Re1 {[#]} f3 $1 {[%mdl 512]} 26. Kf1 {Re6 is the strong threat.} (26. Nxf3 Qg3+) 26... Qf6 {[#]} (26... Nd8 $1 $11) 27. Re6 $1 $16 {[%cal Re6f6]} Ra8 28. Qxg6+ Qxg6 29. Nxg6 {KRN-KRN} Ra5 (29... Nd8 $16 {was worth a try.} 30. Rb6 Nc6) 30. Kf2 $18 Rg5 31. Nf8+ Kg8 32. Nd7 Kf7 33. Re4 b5 $2 (33... h5 34. Kxf3 hxg4+ 35. hxg4 Ra5) 34. h4 {Precision: White = 78%, Black = 41%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Oboladze, Luka"]
[Black "Neuman, Petr"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2295"]
[BlackElo "2428"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,71,8,14,-7,-2,-7,-7,-7,-7,-10,0,-10,-9,-10,-14,-13,-5,-26,-18,-33,-12,-15,-15,-18,0,-9,0,0,0,-15,-10,-3,-6,-25,-18,-19,-9,-9,-24,-13,0,0,0,-7,0,0,0,0,9,9,10,0,0,0,4,4,10,0,0,0,10,0,0,0]} 1. d4 d5 2. Nf3 c6 3. Bf4 Bf5 4. e3 e6 5. Be2 Bd6 {LiveBook: 8 Games} 6. Bg3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} (6. Bxd6 Qxd6 7. O-O Nd7 8. c4 Ngf6 9. Nc3 O-O 10. Nh4 Be4 11. Rc1 Rfd8 12. a3 h6 13. b4 Bh7 14. Nf3 dxc4 15. Bxc4 a5 16. Qb3 axb4 17. axb4 {1-0 (67) Grischuk,A (2810)-Ivanchuk,V (2704) Beijing 2014}) 6... Nf6 7. O-O Bxg3 8. hxg3 Nbd7 9. c4 h6 10. Nc3 O-O 11. Rc1 $146 ({Predecessor:} 11. c5 Qc7 12. b4 e5 13. b5 exd4 14. exd4 {½-½ (37) Walkewitz,H (2182)-Jaenig,R (2021) Schloss Schney 2006}) 11... Qe7 12. Qb3 Rab8 13. cxd5 exd5 14. Nd2 Ne8 {[%cal Bf6e8,Be8d6,Bd6e4][%mdl 32]} 15. Na4 Nd6 16. Nc5 Nxc5 17. dxc5 Ne4 18. Nxe4 Bxe4 19. Qc3 Rfe8 20. Rfd1 Qg5 21. Bd3 h5 22. Bxe4 Rxe4 23. Rd4 Rbe8 24. Rcd1 h4 {The position is equal.} (24... f5 {with more complications.} 25. Qa5 a6 26. Rxe4 fxe4 27. Qc7 Re7) 25. gxh4 Qxh4 26. Rxe4 Rxe4 27. Rd4 Rxd4 28. Qxd4 Qxd4 (28... Qe4 {looks sharper.} 29. Kh2 Qc2 30. Kg3 a5 31. a3 Qc1) 29. exd4 $11 {[%mdl 4096] Endgame KP-KP} Kh7 30. Kf1 Kg6 31. Ke2 Kf5 32. Kf3 Kg5 33. Kg3 Kf5 {[#] ...Ke4 is the strong threat.} 34. Kf3 Kg5 35. Kg3 Kf5 36. Kf3 {Accuracy: White = 44%, Black = 56%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Chkhaidze, Nikoloz"]
[Black "Gschnitzer, Oswald"]
[Result "1-0"]
[ECO "E46"]
[WhiteElo "2290"]
[BlackElo "2370"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,89,25,29,0,0,0,0,-9,0,0,0,0,49,0,0,0,22,17,27,0,11,20,41,0,37,0,60,68,153,12,11,11,14,31,244,241,247,270,239,251,324,313,539,531,527,506,533,530,527,525,552,541,575,538,638,625,704,698,767,723,2840,2278,6211,6211,5425,5414,5193,2150]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 d5 6. Nf3 b6 7. cxd5 exd5 8. Rc1 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5} a6 (8... Be7 9. Bd3 Bb7 10. O-O c5 11. dxc5 bxc5 12. Re1 Nc6 13. Bb1 Re8 14. e4 dxe4 15. Nxe4 Nd4 {½-½ (54) Vitiugov,N (2730)-Inarkiev,E (2690) Satka 2018}) 9. Bd3 Bb7 10. Ne5 Bd6 11. O-O c5 12. f4 Nc6 {LiveBook: 17 Games} 13. Be1 cxd4 14. Nxc6 Bxc6 15. Ne2 Bb5 $146 ({Predecessor:} 15... Bd7 16. Nxd4 Qe7 17. Qf3 Rfe8 18. Bf2 Bc5 {0-1 (41) Castellanos Rodriguez,R (2487)-Ubilava,E (2498) Linares 2017}) 16. Nxd4 Bxd3 17. Qxd3 Bc5 18. Nf5 Re8 19. Bc3 Re6 20. Rf3 Bf8 21. Rg3 g6 22. Nd4 Re4 23. Nc6 Qd6 24. Be5 Qe6 (24... Qd7 $1 $11) 25. f5 $36 {[%mdl 2048] White is pushing.} Qxf5 (25... Qd7 $1 $14) 26. Rf3 (26. Rf1 $16 Qd7 27. Rxf6) 26... Rxe5 $11 27. Rxf5 Rxf5 28. Qd4 Bc5 $2 (28... Re8 $1 $14) 29. Rxc5 $18 bxc5 30. Ne7+ Kh8 31. Qh4 g5 32. Qh6 Ng8 $2 (32... Rf2 33. Qxg5 Rb8) 33. Qc6 {[%mdl 64] [#] Double Attack. White is clearly winning.} Nxe7 34. Qxa8+ {[%mdl 4096] Endgame KQ-KRN} Kg7 35. Qxa6 Re5 36. Qd6 Rxe3 37. Qxc5 Re1+ 38. Kf2 Re4 {[#]} 39. a4 $1 {[%cal Ba2a4,Ba4a5,Ba5a6,Ba6a7][%mdl 544]} Rf4+ (39... Rxa4 40. Qxe7) 40. Kg1 Nf5 41. a5 d4 42. g3 Rf3 43. a6 d3 44. Qc3+ f6 45. a7 {Accuracy: White = 58%, Black = 24%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Ajay Krishna, S."]
[Black "Liu, Guanchu"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2289"]
[BlackElo "2425"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,60,0,0,-5,-4,-2,-9,-8,-4,-33,-36,-33,-39,-41,0,0,-13,-8,-6,-7,-11,-4,0,0,0,0,0,-16,-11,-20,0,0,0,0,0,0,0,0,0,0,38,13,27]} 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. Nc3 O-O 7. b3 c5 8. Bb2 d5 9. cxd5 Nxd5 10. Nxd5 Qxd5 {LiveBook: 11 Games} 11. Qb1 $146 {A14: English Opening: 1...e6 with b3 by White} ({Predecessor:} 11. d3 Nc6 12. Ne5 Qd6 13. Nxc6 Bxc6 14. Bxc6 Qxc6 15. Qc2 Rfd8 16. Qc4 Rd5 17. a4 Bf6 18. Bxf6 gxf6 19. Rfc1 a5 {½-½ (27) Wallner,J (2313)-Kreisl,R (2448) Austria 2017}) 11... Nc6 12. Ne5 {[%mdl 64] [#] Pin} Qd6 13. Bc3 f6 14. Nd3 Rab8 15. Nf4 e5 16. Nd5 Nd4 (16... Kh8 {keeps more tension.} 17. Nxe7 Qxe7 18. d3 Nd4 19. Qb2 Bxg2 20. Kxg2 Qd7) 17. Nxe7+ Qxe7 18. Bxd4 exd4 19. Bxb7 Rxb7 20. e4 dxe3 21. dxe3 Rd8 22. Qc2 Rbd7 23. Rad1 Qe6 24. Rxd7 Rxd7 25. Rd1 Rxd1+ 26. Qxd1 $11 {KQ-KQ} Qc6 27. Qd8+ Kf7 28. a4 a6 29. Qd3 Qf3 30. h4 a5 {Accuracy: White = 63%, Black = 82%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Kushko, Dmitriy"]
[Black "Schmidt-Schaeffer, Sebastian"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "2270"]
[BlackElo "2350"]
[Annotator "NA"]
[PlyCount "65"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:19]} 2. g3 {[%emt 0:00:00]} c5 {[%emt 0:02:47]} 3. Bg2 {[%emt 0:00:00]} Nf6 {[%emt 0:01:17]} 4. O-O {[%emt 0:00:00]} Nc6 {[%emt 0:03:33]} 5. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:09:57]} 6. Nxd4 {[%emt 0:00:06]} Qb6 {[%emt 0:05:48]} 7. Nxc6 {[%emt 0:03:13]} bxc6 {[%emt 0:00:24]} 8. c4 {[%emt 0:00:15]} e6 {[%emt 0:09:53]} 9. Nc3 {[%emt 0:00:31]} Bb4 {[%emt 0:12:32]} 10. Be3 {[%emt 0:06:14]} Qa5 {[%emt 0:05:23]} 11. cxd5 {[%emt 0:00:41]} cxd5 {[%emt 0:02:35]} 12. Bd4 {[%emt 0:02:20]} O-O {[%emt 0:02:45]} 13. a3 {[%emt 0:02:16]} Be7 {[%emt 0:01:33]} 14. b4 {[%emt 0:01:28]} Qc7 {[%emt 0:06:13]} 15. Rc1 {[%emt 0:04:30]} Qb8 {[%emt 0:00:29]} 16. Na4 {[%emt 0:07:12]} e5 {[%emt 0:03:42]} 17. Bc5 {[%emt 0:01:36]} Bxc5 {[%emt 0:00:21]} 18. Nxc5 {[%emt 0:01:37]} Rd8 {[%emt 0:01:05]} 19. Qb3 {[%emt 0:04:56]} Bg4 {[%emt 0:04:31]} 20. Rfd1 {[%emt 0:01:46]} Bxe2 {[%emt 0:01:50]} 21. Rxd5 {[%emt 0:00:15]} Nxd5 {[%emt 0:01:09]} 22. Bxd5 {[%emt 0:00:08]} a5 {[%emt 0:06:22]} 23. Re1 {[%emt 0:04:34]} Bg4 {[%emt 0:06:36]} 24. Bxa8 {[%emt 0:04:11]} Qxa8 {[%emt 0:00:09]} 25. Qe3 {[%emt 0:00:35]} axb4 {[%emt 0:00:35]} 26. axb4 {[%emt 0:00:07]} Bh3 {[%emt 0:01:16]} 27. Qe4 {[%emt 0:00:12]} Qxe4 {[%emt 0:04:15]} 28. Nxe4 {[%emt 0:00:09]} f6 {[%emt 0:00:49]} 29. Nc5 {[%emt 0:00:41]} Bf5 {[%emt 0:02:05]} 30. Re3 {[%emt 0:00:29]} Bh3 {[%emt 0:01:15]} 31. Re1 {[%emt 0:01:04]} Bf5 {[%emt 0:00:13]} 32. Re3 {[%emt 0:00:17]} Bh3 {[%emt 0:00:11]} 33. Re1 {[%emt 0:00:21]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Schmid, Thomas"]
[Black "Pechac, Jergus"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "2201"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,82,0,0,0,0,0,-4,30,-3,0,0,10,0,-10,0,0,0,0,0,0,0,-4,-1,3,4,6,0,0,0,0,0,0,-4,-3,-4,-2,-3,-4,-2,-3,-73,-73,-54,-72,-72,-72,-81,-75,-72,-72,-72,-72,-77,-66,-98,-107,-149,-130,-201,-198,-189,-189,-185,-186,-190,-190]} 1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. d4 dxe4 7. Qxe4 {B11: Caro-Kann: Two Knights Variation} Nf6 8. Qd3 Be7 (8... Na6 9. a3 Qb6 10. Be2 Be7 11. O-O O-O 12. Rd1 Rfd8 13. b4 Nc7 14. Na4 Qb5 {½-½ (39) Vachier Lagrave,M (2794)-Ivanchuk,V (2732) Germany 2018}) 9. g3 Na6 {[%cal Bb8a6,Ba6c5,Bc5b3][%mdl 32]} 10. a3 {LiveBook: 4 Games} Qb6 11. Bg2 Rd8 12. Ne2 c5 $146 {[%cal Rc5d4]} ({Predecessor:} 12... e5 13. c3 exd4 14. cxd4 O-O {½-½ (131) Padmini,R (2437)-Khairullin,I (2647) Doha 2015}) 13. c3 cxd4 14. Nxd4 Nc5 15. Qb5+ Qxb5 16. Nxb5 Nb3 17. Rb1 a6 18. Nd4 $1 {[%cal Rd4b3]} Nxd4 19. cxd4 Nd5 20. Be3 Bf6 21. Ke2 h5 22. h4 Rd6 23. Rbc1 Kd7 24. Rc2 Rc8 25. Rhc1 Rxc2+ 26. Rxc2 g6 27. b4 b6 28. Rc4 Bd8 29. a4 (29. Bh6 $11 {keeps the balance.}) 29... b5 $36 {[%mdl 2048] Black is really pushing.} 30. axb5 axb5 31. Rc5 Bb6 32. Rc1 Nxb4 33. Rb1 Nd5 34. Kd3 Nc7 35. Kc3 Ke7 36. Rb2 Rd8 37. Bf1 Nd5+ 38. Kc2 (38. Kd3 $17) 38... Nxe3+ $19 {Black is clearly better.} 39. fxe3 Bc7 40. g4 hxg4 41. Rxb5 Rh8 {Accuracy: White = 58%, Black = 87%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.13"]
[Round "4"]
[White "Vojta, Jakub"]
[Black "Gschnitzer, Adrian"]
[Result "0-1"]
[ECO "B32"]
[WhiteElo "2118"]
[BlackElo "2368"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,58,19,0,-109,-19,-4,-16,-51,-41,-35,-41,-47,-13,-21,-9,-44,-54,-68,-63,-309,-299,-299,-270,-454,-368,-422,-429,-408,-353,-1281,-1272,-1184,-1185,-29989,-29990,-29990,-29991,-29991,-29992,-29992,-27]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 f5 9. exf5 Bxf5 10. Be3 {B32: Sicilian: Löwenthal and Kalashnikov Variations} (10. Bd3 Be6 11. Qh5+ Bf7 12. Qh3 Nf6 13. O-O Nd4 14. Be3 Be6 15. Qh4 Nf5 16. Bxf5 Bxf5 17. Rad1 Qc8 18. c5 dxc5 {0-1 (61) Kasimdzhanov,R (2693)-Naiditsch,A (2706) Poznan 2014}) 10... Nf6 {LiveBook: 3 Games} 11. Nd5 {[#]} (11. Bd3 $11 {keeps the balance.} Bxd3 12. Qxd3) 11... O-O (11... Nxd5 $1 $17 12. Qxd5 Nb4 13. Qxb7 Rb8) 12. Be2 $146 {[#]The position is equal.} ({Predecessor:} 12. Bb6 Qd7 13. Be2 Bd8 14. O-O Nxd5 15. cxd5 Ne7 16. Nc4 {½-½ (42) Battsetseg,T (2245)-Amura,C (2350) Elista 1998}) 12... Nd4 $1 {[%mdl 512]} 13. Bxd4 {Strongly threatening Bb6.} Nxd5 ({Much weaker is} 13... exd4 $6 14. Qxd4 Nxd5 15. Qxd5+ Rf7 16. O-O $14) 14. cxd5 {Threatens to win with Bc3.} exd4 15. O-O $1 Qb6 {Black wants to play ...Rac8.} 16. Nc4 Qc5 $36 {[%mdl 2048] ...Rac8 is the strong threat. White is under pressure.} 17. Bd3 b5 {[%cal Bb7b5,Bb5c4][%mdl 32]} 18. Bxf5 Rxf5 19. Qe2 $2 (19. Nd2 $15) 19... bxc4 $19 20. Qxe7 Re5 ({Much less strong is} 20... Qxd5 21. Rae1 $17) 21. Qh4 $2 (21. Qb7 {keeps fighting.} Qxd5 22. Qxd5+ Rxd5 23. Rac1) 21... Qxd5 22. Rae1 Rxe1 23. Rxe1 {[%mdl 4096] Endgame KQR-KQR} d3 {[%cal Bd4d3,Bd3d2][%mdl 32] And now ...d2 would win.} 24. Qg4 $2 (24. Qe7) 24... d2 {[%cal Rd2e1]} 25. Rf1 Re8 {aiming for ...Re1.} 26. Qd7 Re1 {Black mates.} 27. Qd8+ Kf7 28. Qd7+ Kf6 29. Qd8+ Ke5 $2 {[%mdl 32768] Accuracy: White = 15%, Black = 65%. . Sensor Board Error (Ke4/e5)?} (29... Kg6 {mates} 30. Qe8+ Rxe8 31. h4 Re1 32. Kh2 Rxf1 33. Kg3 d1=Q 34. Kh3 Rxf2 {[%mdl 64] Double Attack} 35. h5+ Q1xh5+ 36. Kg3 Qxg2#) 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Pechac, Jergus"]
[Black "Oboladze, Luka"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2472"]
[BlackElo "2295"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,55,15,45,0,32,17,37,50,70,8,3,2,17,13,86,-95,-81,-72,-84,-84,0,0,0,-101,345,347,333,347,300,243,302,285,329,310,1627,1616,1544,1364,29984,29985,29990,29991,29994,29995]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Qa4+ c6 {LiveBook: 46 Games} 8. h4 $146 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3} ({Predecessor:} 8. Nf3 O-O 9. Qa3 Nd7 10. Be2 c5 11. O-O b6 12. Rd1 Bb7 13. e5 Qc7 14. Qb3 e6 15. Be3 Bd5 16. Qb2 {½-½ (16) Antic,D (2442)-Damljanovic,B (2529) Belgrade 2017}) 8... Nd7 9. h5 e5 {aiming for ...exd4.} 10. Nf3 {White is slightly better.} exd4 11. h6 ({White should try} 11. cxd4 $14 Qe7 12. Qc2) 11... Bf6 $11 12. cxd4 Nc5 {[%mdl 64] Double Attack, Pin} 13. Qc2 $36 {[%mdl 2048] White has the initiative.} Bg4 {[#]} ({But not} 13... Bxd4 $2 14. Nxd4 Qxd4 15. Bb2 $18) (13... Ne6 $1 $11) 14. Rb1 $2 ({Much worse is} 14. Qxc5 $6 Bxf3 15. e5 Be7 $11) (14. e5 $1 $16 {is necessary to keep the advantage.} Bxf3 15. gxf3 Qxd4 16. exf6 Qxa1 17. Qxc5 Qxf6 18. Qe3+ Kd8 19. Qb3) 14... Bxf3 $1 $17 15. gxf3 {[%cal Bg2f3,Bf3e4][%mdl 32]} Bxd4 16. Ba3 {[#]} b6 ({Better is} 16... Qa5+ $1 $17 17. Bb4 Qa4) 17. Rd1 $11 {Threatens to win with Bb2.} O-O 18. Bc4 (18. Qc4 $1 $11 {remains equal.} Ne6 19. Bxf8) 18... Nxe4 $2 {[%mdl 8192]} (18... Qf6 $17 {and life is bright.} 19. Rh3 Rfd8) 19. fxe4 $18 c5 20. Bd5 Rc8 21. Rh3 Qf6 22. Rdd3 Qe5 23. Rhf3 b5 $2 {[#]} (23... Rc7 24. Qc4 Qh5) 24. Rxd4 $1 {[%mdl 512]} Qxd4 (24... cxd4 25. Rxf7) 25. Bb2 Qb4+ 26. Bc3 {White mates.} Qa3 27. Qd2 b4 28. Qf4 {Accuracy: White = 46%, Black = 28%.} ({Not} 28. Qb2 Qxb2 29. Bxb2 c4 $16) 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Xiang, Zeyu"]
[Black "Eriksson, Christian Altenburg"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2440"]
[BlackElo "2177"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,73,38,31,23,24,23,23,16,22,18,54,72,130,140,120,126,155,115,125,67,62,24,16,18,17,0,72,79,47,14,71,72,75,22,128,129,133,124,140,150,267,277,1069,1053,1629,1664]} 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Nf6 5. Nc3 Nc6 {[%cal Bb8c6,Bc6a5,Ba5c4][%mdl 32]} 6. e3 Bf5 7. Qb3 Na5 8. Qa4+ Bd7 9. Qc2 Rc8 10. Bd3 e6 11. Nf3 b5 12. a3 Nc4 {D14: Slav Defence: Exchange variation with ...Bf5} 13. O-O Be7 14. h3 O-O 15. Ne5 Be8 {[#] LiveBook: 8 Games} 16. Rac1 $146 a5 17. Qe2 b4 18. axb4 axb4 19. Nb1 {[%cal Re5c4]} Nd6 20. Nd2 Qb6 ({Black should play} 20... Nfe4) 21. Rxc8 $16 Nxc8 22. Ra1 Nd6 23. Ra6 Qb7 24. Ra5 (24. Nb3 $16) 24... Nfe4 $14 25. Nb3 {Strongly threatening f3.} f6 26. Ng4 {aiming for f3.} h5 27. Nh2 $36 {[%mdl 2048] White is more active.} g5 (27... e5 $11 28. Bxe4 Nxe4) 28. Bxd6 $1 $16 Bxd6 29. Nf1 Bf7 (29... f5 $1 $11) 30. Bxe4 dxe4 31. Qa6 (31. Nc5 $16 Bxc5 32. Rxc5 (32. dxc5 Rc8 $14)) 31... Qe7 (31... Qxa6 $11 32. Rxa6 Be7) 32. Nc5 f5 {[#]} 33. Rb5 $1 Bxc5 34. dxc5 Rd8 {[#]} (34... Qc7 $16 {might work better.} 35. c6 Rc8) 35. c6 $1 $18 {[%cal Bc5c6,Bc6c7][%mdl 32]} Qe8 $2 (35... Kg7 36. Rb7 Qd6) 36. c7 Rc8 {[#]} 37. Qxc8 $1 {[%mdl 576] Promotion. Accuracy: White = 64%, Black = 29%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Neuman, Petr"]
[Black "Ajay Krishna, S."]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2428"]
[BlackElo "2289"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,42,2,-1,-1,5,7,17,-10,-4,-9,-15,-26,-19,-19,-21,-120,-120,-200,-150,-172,-113,-115,-112,-117,-88,-234,-242,-306,-297,-434,-433,-425,-429,-485,-473]} 1. Nf3 c5 2. b3 Nf6 3. Bb2 g6 4. e4 (4. Bxf6 exf6 5. g3 Bg7 6. Bg2 f5 7. c3 O-O 8. O-O d6 9. d4 Nd7 10. c4 Nf6 11. Nc3 d5 12. cxd5 Nxd5 13. Nxd5 Qxd5 {½-½ (48) Kovalenko,I (2646)-Fier,A (2558) Tegernsee 2018}) 4... d6 5. Bb5+ Nbd7 6. O-O {A05: Réti Opening: 1 Nf3 Nf6} Bg7 7. Re1 $146 ({Predecessor:} 7. Qe2 e5 8. c3 O-O 9. Re1 Qe7 10. d3 Nh5 11. d4 Nf4 {1-0 (45) Schrik,R-Luynenburg,R Hengelo 1996}) 7... O-O 8. a4 {The position is equal.} a6 9. Bxd7 Bxd7 10. a5 e5 11. d3 Nh5 12. b4 (12. Bc1 $11) 12... cxb4 $17 13. d4 (13. c3 $17) 13... Bg4 14. Nbd2 {[#]} Qc7 (14... Nf4 $1 $19 15. h3 Bh5) 15. h3 Bxf3 16. Nxf3 Rac8 17. Qd2 (17. Ra4 $17 {is a better defense.}) 17... Qxc2 $19 18. Qxb4 Nf4 {[#] White must now prevent ...Nd3.} 19. Qd2 (19. Rad1 $142 Nd3 20. Rxd3 Qxd3 21. dxe5) 19... Qxd2 {Black is clearly winning.} 20. Nxd2 Nd3 21. Reb1 Rc2 {[%mdl 64] Double Attack. Accuracy: White = 29%, Black = 89%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Liu, Guanchu"]
[Black "Kushko, Dmitriy"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "2425"]
[BlackElo "2270"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,87,35,20,19,37,33,30,31,24,12,0,91,88,87,61,64,50,85,61,78,59,60,45,39,27,30,28,63,80,73,59,75,58,113,100,103,90,104,102,111,74,395,384,419,419,406,401,317,345,499,435,857,861,824,825,1688,1633,1537,1441,4678,2173,5281,5189,4565,1176]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Bd3 Na6 7. O-O c5 8. d5 Rb8 9. Kh1 Nc7 10. a4 a6 {B09: Pirc Defence: Austrian Attack} 11. a5 Nb5 12. Bxb5 axb5 13. e5 {LiveBook: 3 Games} Nd7 {[%cal Rd6e5]} (13... dxe5 14. fxe5 Nh5 15. Nxb5 Bg4 16. c4 Bxe5 17. Bh6 Re8 18. Qe1 {½-½ (44) Martinez Alcantara,J (2545)-Valenzuela Gomez,F (2389) Gijon 2018}) 14. Nxb5 dxe5 15. fxe5 Nxe5 16. Nxe5 $146 ({Predecessor:} 16. Bf4 Bg4 17. Re1 Nxf3 18. gxf3 {1-0 (37) Fritsche,F (2354)-Pauli,A (2370) ICCF email 2010}) 16... Bxe5 17. Bh6 Bg7 (17... Bxb2 $11 {remains equal.} 18. Bxf8 Bxa1) 18. Bxg7 $16 Kxg7 19. Qd2 Bd7 20. Nc3 {[%cal Bb5c3,Bc3e4,Be4c5][%mdl 32]} e6 21. Ne4 {aiming for d6.} exd5 $1 22. Nxc5 Bc6 23. Qd4+ Kg8 24. Rf6 Rc8 25. h4 {[#] Hoping for h5!} Qe7 26. b4 Qe2 27. c3 $40 {[%mdl 128] White has some attack.} Rfe8 28. Raf1 Re7 (28... Rc7 $14) 29. Kh2 Rcc7 30. R1f2 Qe5+ 31. Qxe5 Rxe5 32. a6 b6 $2 {[%mdl 8192]} (32... Re8 $16 {is more resistant.}) 33. Nb3 $18 Bb5 34. Rxb6 Bxa6 35. Rxa6 Rxc3 36. Nd2 d4 (36... Re7 $142 37. b5 Rb7) 37. Rd6 {White is clearly winning.} d3 (37... Re8 $142 38. Rxd4 Rc2) 38. Rd8+ Kg7 39. Rd7 Rf5 40. Rxf5 gxf5 41. b5 {[%cal Bb4b5,Bb5b6,Bb6b7][%mdl 32]} Kf6 42. b6 {Intending b7 and mate.} Rc6 43. b7 Rb6 {[#]} 44. Rd6+ $1 {[%mdl 512] Accuracy: White = 65%, Black = 38%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Naumkin, Igor"]
[Black "Olsarova, Karolina"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2418"]
[BlackElo "2263"]
[Annotator "TA"]
[PlyCount "144"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,144,30,30,12,29,29,29,25,31,18,20,-2,-13,0,0,0,56,0,0,-12,14,-16,-15,-56,-65,-52,-52,-56,-66,-65,-65,-57,-46,-56,-60,-87,-89,-94,-92,-90,-89,-101,0,-89,0,-114,-92,-110,-107,-116,-93,-108,0,-116,-116,-132,-101,-112,-82,-140,-116,-112,-111,-106,-115,-101,-86,-86,-86,-86,-86,-86,-86,-86,-86,-133,-13,-13,-17,-86,-86,-86,-86,-86,-86,-86,-86,-86,-86,-86,-86,-86,-86,-86,-86,-86,-86,-95,-95,-95,-95,-97,-95,-97,-95,-97,0,0,0,0,0,0,0,0,0,0,0,-12,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 c5 5. Bxb4 cxb4 6. e3 O-O 7. Nbd2 d6 8. Bd3 Nc6 {E11: Bogo-Indian} 9. O-O b6 (9... a5 10. Ne4 Nxe4 11. Bxe4 h6 12. h3 Qe7 13. Rc1 Rd8 14. Qc2 Bd7 15. c5 Be8 16. cxd6 Rxd6 {1-0 (46) Riazantsev,A (2671)-Bartel,M (2641) Tallinn 2016}) 10. Qc2 Bb7 {LiveBook: 3 Games. White has an edge.} 11. Ng5 {[%cal Rd3h7]} h6 12. Nge4 Nxe4 $146 ({Predecessor:} 12... Rc8 13. Rac1 Nxe4 14. Bxe4 d5 15. Bf3 dxc4 16. Qxc4 {0-1 (33) Borbon,O (1998)-Alvarez Pedraza,A (2476) Bogota 2014}) 13. Bxe4 Qc7 14. f4 Ne7 15. Bxb7 Qxb7 16. e4 Rac8 17. f5 Nc6 ({Black should try} 17... exf5 $11 18. exf5 f6) 18. f6 (18. Qd3 $14) 18... Nxd4 $11 19. Qd3 e5 20. Nf3 g6 21. Nxd4 exd4 22. Qxd4 Rfe8 23. Rae1 Qc6 24. Qd2 Qc5+ 25. Kh1 Kh7 26. b3 Re5 27. h3 Rce8 28. Rf4 R8e6 29. Qd3 Qc6 30. Re3 Qc5 (30... a5 $17) 31. Re2 (31. Re1 $1 $11) 31... Qc6 32. Re3 $1 Qe8 33. Qd2 a5 34. Qd3 Qd8 35. Qf1 Qe8 36. Qd3 $1 Qc6 37. Qd2 Qc7 38. Qd3 Qb7 39. Qd2 (39. Re2 $142) 39... Qc6 40. Rd3 g5 41. Rf1 Rxe4 42. Rd5 {Black must now prevent Rxg5!} Re2 43. Qd3+ Kg8 44. Qf3 {[#]} Re1 $1 45. Rxe1 Rxe1+ $17 {[%mdl 4096] Endgame KQR-KQR} 46. Kh2 Qe8 47. Qg3 Qe3 (47... Qe4 $17 {And now ...Qb1 would win.} 48. Rxd6 Re3 49. Rd8+ Kh7) 48. Qxe3 $11 Rxe3 {KR-KR} 49. Rb5 (49. Rxd6 $11 {keeps the balance.} Re2 50. Rxb6) 49... Re2 $17 50. Rxb6 Rxa2 51. Rxd6 Kh7 52. Ra6 Ra3 53. c5 Kg6 54. c6 {Hoping for c7.} Rxb3 55. Rxa5 Rc3 ({Avoid the trap} 55... Kxf6 $2 56. Rc5 $18) 56. Rb5 Rxc6 57. Rxb4 {[#]} h5 $1 58. Rb5 h4 59. Ra5 Rxf6 60. Rb5 Re6 61. Ra5 f5 62. Rb5 g4 (62... Re1 $17 63. Rb6+ Kg7) 63. hxg4 $11 {The position is equal.} fxg4 64. Ra5 Re2 {Strongly threatening ...h3.} 65. Ra6+ Kg5 {Threatens to win with ...h3.} 66. Ra5+ Kf4 {...h3 is the strong threat.} 67. Ra4+ Re4 (67... Kf5 {feels hotter.} 68. Ra8 Re6 69. Ra5+ Kg6 70. Ra8 Rf6) 68. Ra3 h3 69. gxh3 Re2+ 70. Kg1 g3 71. Ra4+ Kf3 {[%cal Re2e1]} 72. Ra3+ Kf4 {Accuracy: White = 56%, Black = 63%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Kacharava, Nikolozi"]
[Black "Zhang, Ziji"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2397"]
[BlackElo "2387"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,80,11,0,29,0,0,0,0,-18,-21,-44,-19,-17,-13,-35,-16,-25,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-11,-3,-22,-35,-18,0,-35,-24,-33,-20,-17,-10,-56,-64,-99,-93,-139,-142,-132,-124,-181,-183,-200,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. O-O d5 7. exd5 Nxd5 8. Re1 Bg4 9. Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Nb6 10. Bb5 Bd6 11. h3 {LiveBook: 23 Games} Bd7 (11... Bh5 12. Ne4 Re8 13. Bg5 f6 14. Be3 a6 15. Bxc6 bxc6 16. Ng3 Bf7 17. c4 Bb4 18. Re2 Bf8 19. b3 c5 {0-1 (89) Nakamura,H (2777)-Grischuk,A (2766) Saint Louis 2018}) 12. Ne4 $146 ({Predecessor:} 12. Nf1 Re8 13. Bg5 f6 14. Be3 a6 15. Bxc6 Bxc6 16. Bxb6 cxb6 {½-½ (71) Andriasian,Z (2621)-Laxman,R (2374) Abu Dhabi 2016}) 12... a6 13. Bxc6 Bxc6 14. c4 Re8 15. Bg5 Be7 16. Bxe7 Qxe7 17. Qc2 Qe6 18. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Nd7 {[%cal Bb6d7,Bd7c5,Bc5d3][%mdl 32]} 19. a4 Qg6 20. b5 Bxe4 $1 21. Rxe4 Nc5 22. Rxe5 Nxd3 23. Rxe8+ Rxe8 24. Rd1 Nc5 25. Qc3 h6 26. a5 Re2 27. bxa6 (27. Rd8+ {is more complex.} Kh7 28. Rd2 Ne4 29. Qd3 Nxd2 30. Qxe2 Qb1+ 31. Kh2) 27... bxa6 $40 {[%mdl 128] Black attacks.} 28. Re1 (28. Rd8+ {feels hotter.} Kh7 29. Rd2 Rxd2 30. Qxd2 Qf5 31. Qe2) 28... Rxe1+ 29. Qxe1 Qe4 30. Qd2 Nd3 31. Qc3 c5 32. Qc2 g5 33. Qc3 Nf4 {[#] aiming for ...Ne2+.} 34. Kh2 Qe2 35. Qe3 Qxc4 36. Qe8+ Kh7 37. Qc6 (37. Qe5 $17) 37... Nd3 $19 38. Qd7 Nxf2 $2 ({Better is} 38... Kg7 $19 39. Qf5 Qf4+ 40. Qxf4 Nxf4) 39. Qf5+ $11 Kg8 {[#] Threatens to win with ...Ne4.} 40. Nxg5 $1 hxg5 {Accuracy: White = 41%, Black = 56%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Krivonosov, Oleg"]
[Black "Gomes, Mary Ann"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "2390"]
[BlackElo "2296"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,78,58,53,35,34,30,34,25,37,4,0,0,54,62,58,54,59,59,56,32,45,32,32,14,17,17,17,13,14,25,14,22,23,9,9,9,14,10,11,27,64,54,47,49,27,8,16,18,20,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 c5 5. O-O e6 6. Nc3 Be7 7. d4 cxd4 8. Qxd4 Nc6 9. Qf4 d6 {A30: Symmetrical English: Double Fianchetto and Hedgehog} 10. Rd1 a6 11. b3 Qc7 {LiveBook: 29 Games. White is slightly better.} 12. Ng5 (12. Ba3 Ne5 13. Ng5 Bxg2 14. Kxg2 O-O 15. Nge4 Nxe4 16. Nxe4 Ng6 17. Qf3 d5 {0-1 (17) Cheparinov,I (2678)-Inarkiev,E (2693) Poikovsky 2013}) 12... O-O 13. Ba3 {[%cal Ra3d6]} Rad8 14. Rac1 {[#] Nd5! is the strong threat.} Ne5 $146 ({Predecessor:} 14... e5 15. Qd2 Nd4 16. Nf3 Nxf3+ 17. Bxf3 Bxf3 18. exf3 {1-0 (52) Villani,C (2071)-Braun,J (2128) Germany 2012}) 15. Bxb7 Qxb7 16. Nce4 Nxe4 (16... Ng6 $11 17. Qe3 Nxe4 18. Nxe4 d5 19. Bxe7 Nxe7 20. cxd5 Rxd5) 17. Qxe4 $14 Qxe4 18. Nxe4 {[%cal Ra3d6]} Rd7 $1 19. f4 ({And not} 19. Bxd6 Rfd8 $17) 19... Ng6 20. Rd3 {[%cal Ra3d6]} Rfd8 21. Rcd1 {[%cal Ra3d6]} d5 22. Bb2 Nf8 23. cxd5 Rxd5 24. Rxd5 Rxd5 25. Rxd5 exd5 $11 {[%mdl 4096] Endgame KBN-KBN} 26. Nc3 Bf6 27. Nd1 Bxb2 28. Nxb2 {KN-KN} Nd7 29. Nd3 a5 30. Kf2 Kf8 31. Ke3 Ke7 32. Kd4 Ke6 33. Ne5 Nf6 {The position is equal.} 34. g4 g6 $1 35. h3 Ne4 36. Nd3 Ng3 37. Ke3 Nf1+ 38. Kd4 Ng3 39. Ke3 Nf1+ {Accuracy: White = 50%, Black = 94%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Low, Zhen Yu Cyrus"]
[Black "Liu, Zhaoqi"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "2385"]
[BlackElo "2300"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,56,29,37,17,34,6,58,70,73,50,125,118,120,100,162,126,122,141,165,93,111,94,111,119,106,-357,-349,-347,-333,-457,-444,-518,-511,-497,-470,-887,-876,-816,-715]} 1. e4 e6 2. d4 d5 3. Nd2 Be7 4. e5 c5 5. Bd3 (5. c3 cxd4 6. cxd4 Qb6 7. Ndf3 Bb4+ 8. Bd2 Nc6 9. Bc3 Bd7 10. Qd2 f6 11. Bd3 Nge7 12. Ne2 Bxc3 13. bxc3 fxe5 14. Nxe5 Nxe5 15. dxe5 {1-0 (65) Mamedov,R (2680)-Anton Guijarro,D (2654) Kocaeli 2017}) 5... Nc6 6. c3 {C03: French Tarrasch: Unusual Black 3rd moves} cxd4 7. cxd4 Qb6 8. Ndf3 Nh6 9. Ne2 Nf5 10. O-O Bd7 {[%cal Rf5d4] LiveBook: 17 Games} 11. Kh1 Rc8 (11... Ncxd4 $2 12. Nexd4 Nxd4 13. Be3 $18) (11... Nfxd4 $2 12. Be3 $18) 12. a3 a5 $146 ({But not} 12... Nfxd4 $2 13. Nexd4 Nxd4 14. Be3 $18) (12... Ncxd4 $6 13. Nfxd4 Rxc1 14. Rxc1 $16) (12... Na5 $11) ({Predecessor:} 12... Na5 13. Bc2 Bb5 {1-0 (30) Kesidis,O (2248)-Kosmidis,I (1871) Nea Moudania 2016}) 13. Rb1 $14 h6 (13... Nfxd4 $2 14. Nexd4 Nxd4 15. Be3 $18) 14. h3 h5 ({Wrong is} 14... Ncxd4 $2 15. Nfxd4 Nxd4 16. Be3 $18) (14... Bd8 $14) 15. Bxf5 $16 exf5 16. Bg5 Be6 (16... Bxg5 $16 {was called for.} 17. Nxg5 Ne7) 17. Bxe7 Nxe7 18. Qd2 a4 19. Nc3 ({White should play} 19. Nf4 $18) 19... Rc4 20. Qe3 Qa6 21. Nd2 Rc8 22. b3 $2 {[%mdl 8192] [#]} (22. Qg5 $16 {and life is bright.}) 22... f4 $1 $19 {[%cal Rf4e3][%mdl 512]} 23. Qf3 (23. Qxf4 Rxc3) 23... g5 24. Rfc1 {[#]} Bg4 $1 {[%cal Be6g4,Bg4f3,Bf3d5][%mdl 608] Trapped Piece. Black is clearly winning.} 25. Nxd5 {Black must now prevent Rxc8+.} (25. hxg4 hxg4+) 25... Bxf3 ({Not} 25... Rxc1+ 26. Rxc1 Bxf3 27. Nc7+ Kd7 28. Nxa6 $14) 26. Rxc8+ Kd7 27. Nxe7 (27. Rc7+ $142 Kd8 28. Nxf3 Nxd5 29. Rc5) 27... Rxc8 28. Nxc8 Bd5 {Accuracy: White = 31%, Black = 42%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Gschnitzer, Adrian"]
[Black "Jaroch, Karol"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2368"]
[BlackElo "2259"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,91,2,46,22,22,22,37,28,33,34,37,36,54,48,66,-84,26,-18,-14,-46,-59,-18,-27,-29,-50,-58,98,-61,115,104,102,56,54,0,0,-9,-36,-29,-38,-44,122,100,110,111,410,404,460,439,1004,369,398,387,562,560,635,552,529,513,523,525,544,541,522,408,400,389,400,365,435,445,541,568,491,547,561,550,857,852,1277,1243,1207,1172]} 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Be7 (4... Bb4 5. Qc2 Bxc3 6. Qxc3 Qe7 7. d4 Ne4 8. Qd3 exd4 9. Nxd4 O-O 10. Be2 Qb4+ 11. Kf1 Qe7 12. f3 f5 13. Qd1 Nc5 14. Kf2 d6 {½-½ (23) Caruana,F (2827)-Ding,L (2804) Batumi 2018}) 5. b3 O-O 6. Bb2 {A28: English Opening: Four Knights Variation} d6 {LiveBook: 6 Games} 7. Qc2 Bg4 8. Be2 {The position is equal.} Qd7 $146 ({Predecessor:} 8... Re8 9. O-O Bf8 10. d3 Qd7 11. a3 g6 12. Rac1 Bg7 13. Rfd1 Rad8 {½-½ (13) Hug,W (2430)-Zueger,B (2400) Munich 1987}) 9. a3 Rae8 10. O-O Bd8 11. d3 Ne7 12. h3 Bf5 13. Nh4 (13. Ne4 $14) 13... Be6 (13... Bxh3 $1 $17 14. gxh3 Qxh3) 14. f4 Bxh3 15. fxe5 dxe5 16. gxh3 Qxh3 17. Ng2 Nf5 {And now ...Qxg2+! would win.} 18. Nd1 e4 $2 {[#]} ({Don't play} 18... Ng3 $6 19. Nf2 $16) (18... Ng4 $1 $15 19. Bxg4 Qxg4) 19. dxe4 $2 (19. Rf4 $1 $16) 19... Nh4 $2 (19... Nxe4 $15 20. Bf3 Ng5 21. Bxb7 Ng3) 20. Nxh4 $16 Qxh4 21. Bf3 {[%cal Be2f3,Bf3g2,Bg2f1][%mdl 32] Black must now prevent Qg2.} Nxe4 {[%cal Bf6e4,Be4d2,Bd2b3][%mdl 32]} 22. Qh2 (22. Qg2 $14 Bg5 23. Qh2) 22... Qg5+ $1 $11 23. Bg2 Nd2 24. Rf2 Nxb3 25. Rf3 {Strongly threatening Rg3.} Qa5 $2 ({But not} 25... Nxa1 $6 26. Rg3 $14) (25... Qg6 $1 $15 {keeps the upper hand.} 26. Rg3 Bg5) 26. Bc3 Qa6 27. Rb1 $40 {[%mdl 128] White is out for blood.} Qxc4 $2 {[%mdl 8192]} (27... Nc5 $16 {was worth a try.}) 28. Bf1 $18 Qe6 29. Rg3 f6 (29... Bf6 $142 30. Bc4 Qe7 31. Bxb3 b6) 30. Qa2 $2 (30. Bd3 Rf7 31. Qxh7+ Kf8 {[#]} 32. Rxb3 $1 {[%mdl 512]}) 30... Kh8 31. Qxb3 Qd6 (31... Qxb3 $142 32. Rxb3 b6) 32. Rh3 Re4 33. Rb2 Rg4+ 34. Rg2 Rxg2+ 35. Bxg2 b6 36. Qc2 {[%csl Gh3][%cal Rc2h7]} f5 37. Bb2 Bf6 38. Nf2 Bxb2 39. Qxb2 c5 40. e4 {White is clearly winning.} fxe4 41. Bxe4 h6 42. Bb1 {Qc2 is the strong threat.} Qe6 43. Rg3 {[%csl Gg3][%cal Rb2g7]} Rf6 44. Qc2 {[%csl Gb1][%cal Rc2h7]} g6 45. Qd2 Kg7 46. Ng4 {Precision: White = 49%, Black = 25%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Lin, Yi"]
[Black "Chkhaidze, Nikoloz"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2359"]
[BlackElo "2290"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 33,59,14,18,16,27,20,29,16,29,16,32,29,28,20,59,53,118,118,102,106,177,175,249,249,246,246,375,374]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 c5 6. O-O Nc6 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. Nbd2 c3 10. bxc3 O-O 11. Nb3 Be7 12. c4 Bd7 13. Bb2 {E04: Open Catalan: 5 Nf3} Rfd8 14. Nfd4 Rac8 15. Nb5 b6 16. Nd6 Bxd6 17. Rxd6 Be8 {LiveBook: 9 Games} 18. Rxd8 Rxd8 {[#]} (18... Nxd8 19. Rc1 Bc6 20. c5 Bxg2 21. Kxg2 {½-½ (30) Cheparinov,I (2710)-Anand,V (2782) Riadh 2017}) 19. Rc1 $146 ({Predecessor:} 19. h3 h6 20. Rc1 Nb4 {½-½ (43) Ju,W (2557)-Guo,Q (2443) China 2015}) 19... Nb4 20. a3 Na6 21. c5 Ba4 22. cxb6 axb6 23. Bb7 Bxb3 24. Bxa6 Rd1+ (24... Ba4 $14) 25. Rxd1 $16 Bxd1 26. Bd4 Nd7 (26... Nd5 $16 {was worth a try.} 27. f3 f6) 27. Bb5 $18 Nc5 {[#]} (27... e5 $142) 28. Bxc5 $1 bxc5 {[#]} 29. a4 $1 {[%cal Ra4a5] a5 is the strong threat.} Bc2 (29... Bb3 $142 30. a5 Bd5) 30. Bc6 {Accuracy: White = 85%, Black = 19%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Vojta, Tomas"]
[Black "Postny, Evgeny"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2351"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,108,0,0,0,0,0,7,0,0,10,15,6,14,0,22,16,14,8,15,11,18,12,0,0,0,0,0,0,18,18,28,29,32,25,24,27,24,21,36,22,32,17,15,8,22,0,0,0,27,29,29,28,42,47,57,0,0,-13,-13,-13,0,-63,-74,-74,-66,-106,-99,-1079,-1025,-29967,-29968,-29966,-29968,-29966,-29967,-29975,-29976,-29977,-29976,-29976,-29977,-29978,-29977,-29978,-29978,-29980,-29981,-29981,-29982,-29983,-29983,-29984,-29977]} 1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. c3 Qb6 5. Qb3 c4 (5... Nf6 6. Nd2 c4 7. Qc2 Nh5 8. Bg5 h6 9. Bh4 g5 10. Be2 Ng7 11. Bg3 Bf5 12. Qc1 e6 {1-0 (41) Carlsen,M (2832)-So,W (2812) Leuven 2017}) 6. Qc2 {D00: 1 d4 d5: Unusual lines} e5 7. dxe5 Bf5 8. Qc1 g5 9. Bg3 h5 {LiveBook: 3 Games. Threatens to win with ...h4.} 10. h3 Bg7 11. Nf3 g4 12. hxg4 hxg4 13. Rxh8 Bxh8 14. Nd4 $146 Nge7 15. Na3 Bxe5 16. Bxe5 Nxe5 17. Nxf5 Nxf5 18. Qc2 Ne7 19. O-O-O g3 20. Qh7 N5g6 21. Qh3 gxf2 22. Rd2 Rd8 23. Rxf2 Rd6 {[#]} 24. Bxc4 $1 {[%mdl 512]} dxc4 25. Nxc4 {[%mdl 64] Double Attack} Qc5 26. Nxd6+ Qxd6 27. Rd2 Qc7 28. Qf3 Nc6 29. Qe4+ Kf8 30. Kc2 Kg7 31. g4 Nce5 32. b3 b5 33. Rd5 a6 34. g5 Kg8 35. Kb2 Nd7 36. Qe8+ ({Better is} 36. c4 $14) 36... Ndf8 $11 37. Qd8 Qg3 38. Qd6 Qxe3 39. Qxa6 (39. Rd3 $11 Qa7 40. Qd4) 39... Qe2+ $15 40. Kc1 Nf4 41. Qxb5 Qe1+ ({But not} 41... Qxa2 $6 42. Rd2 $11) 42. Rd1 $2 {[%mdl 8192]} (42. Kb2 $17) 42... Ne2+ $19 {[%mdl 64] Double Attack} 43. Kc2 {[#]} Qxd1+ $1 {[%mdl 576] Deflection, Decoy. Black mates.} 44. Kxd1 Nxc3+ {[%mdl 64] Double Attack} 45. Kc2 Nxb5 46. a4 Nc7 47. b4 Nfe6 48. Kd3 Nxg5 49. b5 Nge6 50. Kc4 Kf8 51. a5 Ke7 52. b6 Na6 53. Kb5 Nec5 54. Kc6 Nd7 {Accuracy: White = 47%, Black = 67%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Schmidt-Schaeffer, Sebastian"]
[Black "Schnabel, Ralf"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2350"]
[BlackElo "2206"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,70,35,63,63,53,50,35,26,46,29,77,67,113,83,110,91,91,50,59,41,37,28,34,28,32,33,45,47,47,36,50,52,54,48,56,58,60,25,45,45,45,27,26,0,0,0,0,0,0,0,0]} 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 c6 6. Ne5 Nbd7 7. Nc4 {B01: Scandinavian Defence} Qc7 8. Qf3 Nb6 9. Bf4 Qd8 (9... Qd7 10. Nxb6 axb6 11. O-O-O Qd8 12. h3 e6 13. Bc4 Be7 14. g4 {½-½ (32) Grischuk,A (2750)-Rapport,R (2698) chess.com INT 2017}) 10. Be5 Be6 11. Ne3 Nbd5 {LiveBook: 14 Games} 12. Ncxd5 Bxd5 13. Nxd5 Qxd5 14. Qxd5 cxd5 15. O-O-O $146 Rc8 16. Rd3 Nd7 17. Bf4 Rc6 18. Rb3 Rb6 19. Bb5 {[#] And now Bc7 would win.} Kd8 $1 20. Bd2 {Threatens to win with Ba5.} (20. Be2 {with more complications.} e6 21. Rf3 f6 22. Bd2 Bb4 23. c3) 20... a6 21. Bxd7 Rxb3 22. Ba4 Rb5 $1 23. h4 {[%cal Bh2h4,Bh4h5][%mdl 1056] White has compensation.} e6 24. Rh3 Be7 25. h5 Bf6 ({But not} 25... Rb6 $2 26. Ba5 $18) 26. Rf3 h6 ({Don't blunder} 26... Rb6 $2 27. Ba5 $18) 27. g4 Kc7 ({Not} 27... Rb6 $2 28. Ba5 $18) 28. Bf4+ Kd7 29. c3 Ke7 30. Bxb5 axb5 $14 {KRB-KRB} 31. Kc2 b4 32. Kb3 bxc3 {The position is equal.} 33. bxc3 Rc8 34. Rd3 Kd7 35. Bd2 Be7 {Accuracy: White = 67%, Black = 41%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Kulhanek, Tomas"]
[Black "Frolov, Artur"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2303"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,31,0,0,-2,15,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bc5 5. c3 Nf6 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 d5 9. exd5 Nxd5 10. Qb3 Nce7 11. O-O O-O 12. Rfe1 c6 13. a4 a5 {LiveBook: 13 Games. The position is equal.} 14. h3 {[#] C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Ng6 $146 ({Predecessor:} 14... Nf4 15. Re5 Neg6 16. Re3 Rb8 17. Ne4 Ne7 18. Nc3 Nf5 19. Re5 Ng6 20. Re2 Ngh4 21. Ne5 Nxd4 22. Bxf7+ {0-1 (42) Thorsteinsson,A (2270)-Gretarsson,H (2521) Reykjavik 1999}) 15. Bxd5 Qxd5 16. Qxd5 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Zhang, Xiaopeng"]
[Black "Chernyak, Viktoria"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2299"]
[BlackElo "2186"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,47,32,27,35,14,18,3,9,4,7,19,33,24,32,29,90,96,95,95,95,91,209,207,399,386,451,432,462,403,480,346,5414,5377]} 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bf4 O-O 6. e3 b6 7. cxd5 exd5 8. h3 Bb7 9. Bd3 {LiveBook: 17 Games. E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7} Nbd7 (9... c5 10. O-O Nc6 11. Rc1 a6 12. Bb1 Re8 13. Re1 c4 14. e4 dxe4 15. Nxe4 Nd5 16. Bg3 Bb4 {½-½ (47) Werle,J (2551)-Klein,D (2511) Netherlands 2017}) 10. Qc2 c5 11. dxc5 $146 {The position is equal.} ({Predecessor:} 11. Ne5 h6 12. O-O a6 13. b3 Nxe5 14. Bxe5 Rc8 15. dxc5 bxc5 16. Bf5 Nd7 {½-½ (26) Lida Garcia,F (2143)-Garcia,S (2176) Buenos Aires 2002}) 11... Nxc5 12. O-O Nxd3 13. Qxd3 Rc8 14. Rfd1 Bb4 15. Be5 Re8 {[#]} (15... Bxc3 $11 {remains equal.} 16. Bxc3 Ne4) 16. Bxf6 $1 $16 Qxf6 17. Nxd5 Bxd5 18. Qxd5 Qxb2 (18... a5 $16 {is a better defense.}) 19. Rab1 $18 {[%cal Ba1b1,Bb1b2,Bb2d2][%mdl 32]} Qa3 $2 {[#]} (19... Qc3 20. Ng5 Be7) 20. Ng5 $1 Rc7 21. Qb5 {[%mdl 64] Double Attack} Rec8 22. Qxb4 Qxa2 23. Rb2 Qa6 $2 (23... Qc4 24. Qd2 g6) 24. Rbd2 {Accuracy: White = 69%, Black = 13%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Serrano Salvador, Eduardo"]
[Black "Wang, Yiye"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2282"]
[BlackElo "2443"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,58,25,14,19,-29,-6,-93,-79,-94,-79,-185,-143,-140,-156,-269,-292,-281,-280,-353,-352,-332,-348,-313,-312,-304,-241,-236,-235,-424,-261,-429,-435,-822,-843,-866,-1028,-1246,-1178]} 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. dxc5 bxc5 8. Bf4 Nh5 9. Bg5 {E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7} Be7 10. Bxe7 Qxe7 11. e3 O-O 12. Be2 {LiveBook: 11 Games} f5 13. O-O-O $146 ({Predecessor:} 13. O-O Nc6 14. Rad1 g5 15. Qd2 Rfd8 16. Qd6 g4 17. Qxe7 Nxe7 {½-½ (62) Pert,N (2564)-Howell,D (2650) Aberystwyth 2014}) 13... Nf6 14. Ne1 (14. Qd2 $11) 14... Nc6 15. Bf3 Rab8 16. Nb5 (16. Qa4 $17 {was worth a try.}) 16... a6 17. Nd6 Ba8 18. Qa4 (18. Bxc6 $17 {keeps fighting.} Bxc6 19. f3) 18... Rb6 $19 19. Rd2 Rfb8 20. h3 Ne5 21. Bxa8 Rxd6 (21... Rxa8 22. f4 $17) 22. Rxd6 Qxd6 23. Bf3 Qb6 24. Qc2 {[#] If only White now had time for Be2....} Nxc4 $1 {[%mdl 512]} 25. Qxc4 $2 (25. Nd3 {is the only way for White.} d5 26. h4) 25... Qxb2+ {[%mdl 64] Double Attack} 26. Kd1 Rb3 {[%cal Bb8b3,Bb3c3,Bc3c4][%mdl 32] And now ...Rc3 would win.Black is clearly winning.} 27. Nc2 ({Much worse is} 27. Qc2 Qa1+ 28. Ke2 Rb2) (27. Nd3 $142 Qxa3 28. Qc1 Rxd3+ 29. Ke2) 27... Rc3 {[%mdl 64] Double Attack} 28. Qa4 d5 29. Re1 Rc4 {Accuracy: White = 22%, Black = 82%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Abdulla, Murad"]
[Black "Plischki, Sebastian"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2263"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,62,20,21,24,22,32,27,15,14,0,27,25,16,0,77,75,81,0,0,0,0,0,0,0,0,0,0,0,0,-4,-5,-3,-5,-10,-6,-7,0,-13,-3]} 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. Bxe6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} fxe6 10. Ng5 Qd7 11. Qf3 d5 12. O-O-O d4 13. Bxd4 exd4 {LiveBook: 4 Games} 14. e5 Nc6 15. exf6 Bxf6 16. Nce4 {[%cal Bc3e4,Be4g5,Bg5e6][%mdl 32] [#]} O-O-O $146 ({Predecessor:} 16... Bxg5+ 17. Nxg5 {½-½ (29) Hellers,F (2525)-De Firmian,N (2565) Reykjavik 1990}) 17. Qh3 Bxg5+ 18. Nxg5 Rhe8 $1 19. Rde1 {[%cal Rg5e6]} ({But not} 19. Qxh7 Qd5 $15) 19... Qd5 (19... Nb4 $11 {keeps the balance.}) 20. Nxe6 $16 {[%mdl 64] [#] Double Attack} Rd7 {And now ...d3 would win.} 21. Kb1 (21. Nf4 $16 Rxe1+ 22. Rxe1 Qxa2 23. Re8+ Kc7 24. Qf5) 21... Nb4 $11 {The position is equal.} 22. c4 dxc3 ({Don't blunder} 22... Qxc4 $2 23. Rc1 $18) 23. Qxc3+ {[%mdl 64] Double Attack} Kb8 24. Qxb4 {[#] Threatens to win with Nc5.} Rxe6 25. Qf4+ Ka7 26. Rxe6 Qxe6 27. Qe3+ (27. g3 {keeps more tension.} g5 28. Qe3+ Qxe3 29. fxe3 Rd2 30. e4) 27... Qxe3 28. fxe3 {KR-KR} Rd2 29. Rg1 Re2 30. Kc1 Rxe3 31. Kb1 Re8 {Accuracy: White = 51%, Black = 69%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Mis, Mieszko"]
[Black "Lalic, Bogdan"]
[Result "1/2-1/2"]
[ECO "D26"]
[WhiteElo "2242"]
[BlackElo "2418"]
[Annotator "TA"]
[PlyCount "32"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,32,42,44,41,15,28,20,37]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. Bb3 c5 7. O-O Nc6 8. Qe2 cxd4 9. Rd1 d3 10. Rxd3 Qc7 11. Nc3 Bc5 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4} 12. h3 O-O 13. e4 Nd7 14. Be3 {LiveBook: 12 Games} b6 {[#]} 15. Rc1 $146 ({Predecessor:} 15. Na4 Bxe3 16. Qxe3 {½-½ (33) Williams,S (2520)-Istratescu,A (2623) Mulhouse 2011}) 15... Bxe3 16. Qxe3 Nc5 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Burnett, Andrew"]
[Black "Spiess, Gunter"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2140"]
[BlackElo "2414"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,66,-9,0,0,0,0,0,-18,-3,-16,0,-83,-79,-81,-106,-134,-134,-119,-122,-112,-97,-152,-163,-151,-139,-155,-202,-562,-564,-500,-457,-471,-314,-759,-759,-758,-758,-759,-735,-729,-625,-602,-605,-600,-600,-798,-557,-581,-533,-514,-455]} 1. Nf3 d5 2. c4 e6 3. e3 Nf6 4. b3 c5 5. Bb2 Nc6 6. cxd5 exd5 7. d4 cxd4 {A13: English Opening: 1...e6} 8. Nxd4 Bb4+ 9. Bc3 Bd6 {LiveBook: 3 Games. The position is equal.} (9... Qb6 10. Bb5 O-O 11. Nxc6 Bxc3+ 12. Nxc3 bxc6 13. Be2 c5 14. O-O Be6 15. Na4 {½-½ (81) Sambuev,B (2522)-Wei,Y (2753) Tbilisi 2017}) 10. Bb5 Bd7 11. Nd2 $146 ({Predecessor:} 11. O-O O-O 12. Nf3 Bg4 13. Be2 Qe7 14. Nbd2 Rad8 15. Qc2 Bb8 16. Rfe1 Rfe8 17. Qb2 Ne4 18. Bxg7 Nxd2 19. Nxd2 Bxe2 20. Rxe2 d4 21. Nf3 Kxg7 {0-1 (21) Papadimitropoulos,T (1658)-Georgiadis,I (2312) Litohoro 2006}) 11... O-O 12. Be2 Rc8 13. Nxc6 Rxc6 14. Bd4 (14. Bb2 $11 {keeps the balance.}) 14... Ne4 $1 $17 15. Nxe4 dxe4 16. a3 Qg5 17. Kf1 Rfc8 18. h4 Qe7 19. Bb5 ({Better is} 19. g3) 19... R6c7 $1 20. Bxd7 Qxd7 21. g3 Qf5 22. Kg2 $2 (22. g4 {is tougher.} Qe6 23. b4) 22... Rc2 $19 23. Rf1 Bb8 24. b4 b6 {White must now prevent ...Qg6.} 25. Rb1 $2 {[#]} (25. Bc5 Qf3+ 26. Qxf3 exf3+ 27. Kxf3 bxc5 28. Rfd1) 25... Qg6 $1 {[%cal Rg6g3] ( -> ...Qxg3+). Black is clearly winning.} 26. Kh1 {[#]} Bxg3 $1 {[%mdl 512] Strongly threatening ...Qf5.} 27. Rg1 (27. fxg3 Qxg3) 27... Rxf2 {[%csl Gg3][%cal Rf2h2]} 28. Rb2 Qf5 {[%cal Rf5h3]} 29. Rxg3 Rf1+ 30. Qxf1 Qxf1+ 31. Kh2 g6 32. Rgg2 Qe1 33. Rbf2 {[#]} f5 $1 {Precision: White = 38%, Black = 76%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Michalczak, Thomas"]
[Black "Cerveny, Petr"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2139"]
[BlackElo "2318"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,82,22,29,-19,-21,-31,0,0,0,-4,9,-53,-31,-26,0,0,0,0,0,-12,0,0,0,-41,-16,-46,-30,-112,-93,-105,-105,-92,-104,-87,-93,-191,-181,-224,-225,-224,-218,-214,-214,-225,-181,-307,-204,-730,-454,-559,-553,-549,-544,-602,-591,-1053,-1052,-1182,-1305,-2039,-1970]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 h5 9. Qd2 Nbd7 10. Nd5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} Bxd5 11. exd5 g6 12. c4 (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}) 12... a5 {[%cal Ba6a5,Ba5a4][%mdl 32] LiveBook: 3 Games} 13. Be2 a4 14. Nc1 Qa5 15. Qxa5 Rxa5 16. Nd3 Bh6 {[#]} 17. f4 $146 ({Better is} 17. Bxh6 $11 Rxh6 18. O-O) ({Predecessor:} 17. Bxh6 Rxh6 {½-½ (33) Zilka,S (2521)-Bilobrk,F (2360) Biograd na Moru 2018}) 17... O-O 18. Bd2 Raa8 (18... Ra6 {is more complex.} 19. fxe5 Bxd2+ 20. Kxd2 dxe5 21. Nf2 Nc5) 19. fxe5 Bxd2+ 20. Kxd2 dxe5 21. b4 axb3 22. axb3 Ne4+ 23. Ke3 f5 24. b4 Rfc8 25. c5 (25. Nf2 $11 {keeps the balance.} Nef6 26. Kd2) 25... Nef6 26. d6 Nd5+ 27. Kd2 e4 28. Rxa8 Rxa8 29. Nc1 (29. Rb1 $17) 29... Nxb4 $19 30. Bc4+ Kg7 31. Nb3 Kf6 32. Kc3 Nc6 33. Rb1 Rc8 34. Bd5 (34. Bb5 $142) 34... Ke5 35. Kc4 $2 (35. Bc4) 35... Na5+ {[%mdl 64] [#] Deflection, Decoy. Black is clearly winning.} 36. Nxa5 Rxc5+ {[%mdl 64] Double Attack} 37. Kb4 Rxd5 38. Nxb7 e3 39. g3 g5 40. Re1 Ke4 41. Kc4 f4 {Accuracy: White = 25%, Black = 51%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.14"]
[Round "5"]
[White "Ludvik, Tomas"]
[Black "Pushkov, Nikolai"]
[Result "1-0"]
[ECO "D52"]
[WhiteElo "2089"]
[BlackElo "2309"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,109,10,13,51,32,38,34,57,31,46,18,20,19,16,0,4,0,0,0,8,-25,0,0,0,0,0,0,0,-11,0,0,17,15,56,45,52,56,127,122,115,68,116,125,276,263,287,278,256,254,441,416,408,331,396,402,734,736,733,441,728,729,726,724,714,712,705,697,675,675,589,347,343,339,332,331,702,653,1043,1014,1014,818,5069,5069,2310,2147,8845,7046,29970,11175,29974,29966]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nf3 {[%cal Bg1f3,Bf3d2,Bd2b3][%mdl 32]} Qa5 7. Nd2 Bb4 8. Qc2 O-O 9. Be2 e5 10. O-O exd4 11. Nb3 {LiveBook: 83 Games} Qd8 {D52: Queen's Gambit Declined: Cambridge Springs Variation} (11... Qc7 12. Nxd4 dxc4 13. Bxc4 Bd6 14. h3 Be5 {½-½ (14) Moradiabadi,E (2538)-Vitiugov,N (2734) Helsingor 2018}) 12. Nxd4 dxc4 $146 ({Predecessor:} 12... Bxc3 13. bxc3 dxc4 14. Bxc4 Ne5 15. Be2 h6 16. Bh4 Ng6 17. Bg3 Qe7 18. Rfd1 Ne4 19. c4 {½-½ (75) Kozlov,V (2407)-Weber,K (2309) ICCF email 2013}) 13. Bxc4 Ne5 {White is slightly better.} 14. Be2 h6 15. Bh4 (15. Bxf6 $5 Qxf6 16. Ne4 $14) 15... Ng6 16. Bg3 Qe7 17. Bc4 {Hoping for Qxg6.} Ne5 18. Bb3 Bxc3 19. bxc3 Nh5 20. Rae1 c5 21. Nf5 Bxf5 22. Qxf5 {[%mdl 64] [#] Double Attack} Nxg3 23. hxg3 Rad8 24. Rd1 b6 25. f4 Nc6 26. e4 {[%cal Be3e4,Be4e5][%mdl 32]} Qc7 27. e5 Ne7 28. Qe4 Rxd1 (28... Qc6 $14 29. Qxc6 Nxc6) 29. Rxd1 $16 Rd8 30. Rxd8+ Qxd8 31. f5 {Threatens to win with f6.} c4 $2 (31... Kf8 $16) 32. Qxc4 $18 Qe8 33. e6 {[%cal Re6f7]} f6 {[#]} 34. Qc7 $1 Kf8 $2 (34... b5 35. Bc2 a6) 35. Qxa7 b5 36. g4 h5 37. gxh5 Qxh5 (37... Nxf5 $142 38. Kf1 Ne7) 38. Qb8+ Qe8 39. Qd6 Qc6 (39... Kg8 $142 40. Bc2 Kh8) 40. Qxc6 Nxc6 {[%mdl 4096] Endgame KB-KN} 41. Kf2 Ke7 42. Ke3 Kd6 43. Ke4 Ne7 44. g4 Kc5 45. g5 fxg5 46. Bd1 Kd6 47. Be2 Kc5 $2 (47... Nd5) 48. Bd3 b4 49. cxb4+ Kxb4 50. Ke5 Kc3 51. Be4 Ng8 52. Kd6 Nf6 53. Bc6 g4 54. Kc5 g3 55. e7 {Accuracy: White = 70%, Black = 27%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Postny, Evgeny"]
[Black "Lin, Yi"]
[Result "1-0"]
[ECO "D63"]
[WhiteElo "2623"]
[BlackElo "2359"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,71,47,37,96,29,41,41,70,75,82,82,88,90,117,123,114,113,116,105,113,113,111,108,135,157,250,253,354,367,352,363,365,339,353,343,356,350,381,378,386,382,365,350,367,373,483,484,492,434,559,557,550,547]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 b6 8. cxd5 exd5 9. Bd3 Bb7 10. O-O h6 11. Bf4 c5 {D55: Queen's Gambit Declined: 4 Bg5 Be7: Lines without ...h6 and 6...h6 7 Bxf6} (11... Nh5 $1 $14) 12. h3 ({White should play} 12. Nh4 $1 $16) (12. Ne5 Ne4 13. Bxe4 dxe4 14. Qa4 Nxe5 15. Bxe5 cxd4 16. Bxd4 {1-0 (34) Mandel,A (2395)-Schwab,M (2148) Germany 2018}) 12... a6 13. Bf5 Re8 $146 {White is slightly better.} ({Predecessor:} 13... Ne4 14. dxc5 Ndxc5 15. Nd4 Bd6 16. Nxe4 Nxe4 {1-0 (32) Jean,P (2167)-Horie,T (1823) ICCF email 2015}) 14. Ne5 Nf8 15. Qf3 $1 Bd6 {[#]} 16. Bxh6 $1 Bxe5 17. dxe5 gxh6 18. exf6 Qxf6 19. Nxd5 Bxd5 20. Qxd5 Rad8 21. Qf3 Qxb2 22. Rc4 {Rg4+ is the strong threat.} Qf6 {[#]} (22... Ng6 $16 {keeps fighting.}) 23. Rf4 $1 $18 Qe5 24. Qh5 Qf6 {[#]} 25. Bh7+ $1 {[%mdl 576] Discovered Attack} Nxh7 26. Rxf6 Nxf6 27. Qxh6 Rd6 28. Rc1 Ne4 29. Qf4 Rf6 30. Qg4+ Kf8 31. f3 Rg6 32. Qd7 Ng5 33. Kf2 {White is clearly winning.} Ne6 {intending ...Rd8.} 34. Rd1 c4 35. Qd6+ Kg8 {Black hopes to continue with ...Rd8.} 36. Qc6 {[%mdl 64] Double Attack. Accuracy: White = 87%, Black = 35%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Wang, Yiye"]
[Black "Cerveny, Petr"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2443"]
[BlackElo "2318"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,58,0,0,0,-13,-4,-17,-22,0,-12,-12,-9,-17,0,0,0,0,0,0,24,0,0,0,0,0,0,0,0,0,4,4,6,0,11]} 1. Nf3 d6 2. d4 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. b3 c5 7. c4 Nc6 8. Bb2 cxd4 9. Nxd4 Bd7 10. Nc3 Qa5 11. e3 Rfc8 12. Rc1 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3} Rab8 13. a3 a6 14. b4 {LiveBook: 3 Games} Qd8 {[#]} 15. Nd5 $146 ({Predecessor:} 15. Qb3) 15... Ne5 16. Nxf6+ Bxf6 17. c5 dxc5 18. bxc5 Qa5 19. f4 Nc6 20. Nb3 Qa4 21. Bxf6 exf6 22. Nd4 Nxd4 23. Qxd4 {Threatening Rc4.} Bc6 {The position is equal.} 24. Qxa4 Bxa4 25. Rc3 Bc6 26. Rb1 f5 27. Rb6 Bxg2 28. Kxg2 Rc6 29. Kf3 Rbc8 {Accuracy: White = 89%, Black = 90%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Frolov, Artur"]
[Black "Zhang, Xiaopeng"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2430"]
[BlackElo "2299"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,81,8,0,20,0,0,0,0,0,0,0,12,0,19,26,33,15,23,23,56,75,63,61,92,93,100,99,90,97,118,114,160,133,160,162,163,121,120,125,125,129,126,127,133,108,137,137,154,137,187,137,146,137,203,186,260,257,246,237,554,554,882,853,868,852,815,802,1340,1337]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c4 Ngf6 5. Nc3 g6 6. O-O {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} Bg7 7. d3 (7. Ba4 O-O 8. h3 Nb6 9. Bb3 e5 10. d3 Ne8 11. Bg5 f6 12. Be3 f5 13. Bg5 Bf6 {0-1 (43) Safarli,E (2664)-Giri,A (2790) Shamkir 2016}) 7... O-O 8. Ba4 {LiveBook: 4 Games. The position is equal.} b6 $146 ({Predecessor:} 8... Nb6 9. Bb3 e5 10. Bg5 h6 11. Bd2 Nh5 12. Qc1 g5 13. Bd1 Nf4 {½-½ (43) Frolov,A (2410)-Shyam,S (2535) Zalakaros 2017}) 9. Bf4 Nh5 10. Be3 Ne5 11. Nxe5 dxe5 12. Qd2 Bd7 13. Bd1 Nf6 14. a3 a5 15. h3 Bc6 16. Ba4 Rc8 17. b4 axb4 18. axb4 cxb4 19. Nd5 Nxd5 20. cxd5 Bxa4 21. Rxa4 b5 22. Rxb4 Qa5 23. Rfb1 Rb8 24. Qb2 Rfc8 25. Rxb5 Rxb5 26. Qxb5 Qxb5 27. Rxb5 $18 {[%mdl 4096] Endgame KRB-KRB} f5 28. Bc5 Bf6 29. g4 fxe4 30. dxe4 Kf7 31. Kg2 h5 32. Kf3 hxg4+ 33. hxg4 {[%cal Bh3g4,Bg4g5][%mdl 32]} Rc7 (33... Bg5 $16 34. Kg2 Kf6) 34. Ke2 Rd7 (34... Bg5 $142 35. f3 Bh6) 35. Rb6 Rc7 36. Be3 Rc4 $2 {[#]} (36... g5 {is tougher.} 37. Kd3 Rc8) 37. g5 {White is clearly winning.} Bg7 38. Rb7 Kf8 39. Kd3 Rc8 40. Bd2 Ke8 {[#]} 41. d6 $1 {[%mdl 512] Accuracy: White = 79%, Black = 45%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Plischki, Sebastian"]
[Black "Mis, Mieszko"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2426"]
[BlackElo "2242"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,60,71,70,86,89,89,86,125,85,127,88,148,152,151,179,179,160,176,171,166,157,171,158,153,143,112,50,56,51,43,44,50,18,17,0,25]} 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Qa5+ 5. c3 Nf6 6. d5 Qb6 7. Bc1 e6 8. e4 exd5 9. exd5 Be7 {A45: Trompowsky Attack} 10. c4 O-O 11. Bd3 d6 12. Nc3 Re8 13. Nge2 Nbd7 14. f4 {[%cal Bf3f4,Bf4f5][%mdl 32] LiveBook: 7 Games} Qc7 (14... Nf8 15. Qc2 Bg4 16. O-O Bxe2 17. Bxe2 {0-1 (55) Mchedlishvili,M (2600)-Melkumyan,H (2664) Batumi 2018}) 15. O-O a6 16. a4 Bf8 17. Qc2 Rb8 $146 18. h3 g6 (18... h6 $142) 19. f5 $16 Bg7 20. Bg5 (20. fxg6 $6 hxg6 21. Bg5 Nh7 $11) 20... Rf8 21. Ng3 ({Much less strong is} 21. fxg6 $6 hxg6 22. b3 Nh7 $14) 21... Ne5 22. Rf4 b5 23. axb5 axb5 {[#]} 24. fxg6 $1 ({Don't take} 24. cxb5 $6 c4 $11) 24... fxg6 25. Nxb5 Qb6 {[#]} 26. Bxf6 (26. Raf1 $1 $16 Nxd5 27. Rxf8+ Bxf8 28. Be4 (28. Qf2 Be6 $16)) 26... Rxf6 $14 27. Rxf6 Bxf6 28. Ne4 {[%mdl 64] Double Attack} Be7 29. Rf1 Bd7 {[%cal Rd7b5]} 30. Nec3 Qa5 {Accuracy: White = 67%, Black = 40%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Lalic, Bogdan"]
[Black "Abdulla, Murad"]
[Result "1/2-1/2"]
[ECO "A22"]
[WhiteElo "2418"]
[BlackElo "2263"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,41,47,64,33,62,56,81,70,68,30,106,14,43,20,19,0,0,0,0,0]} 1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. O-O Be7 8. Rb1 O-O 9. b4 Bf5 {A29: English Opening: Four Knights Variation with 4 g3} (9... e4 10. Nxe4 Bf5 11. Qc2 Bxb4 12. a3 Bd6 13. e3 h6 14. Nh4 Bh7 15. f4 Be7 16. f5 Ne5 17. Bb2 {1-0 (35) Nakamura,H (2816)-Sevian,S (2556) Las Vegas 2015}) 10. b5 Nd4 11. d3 Nxf3+ 12. Bxf3 Rb8 {LiveBook: 3 Games} 13. a4 Be6 $146 ({Predecessor:} 13... a5 14. bxa6 bxa6 15. Be3 Bh3 16. Re1 a5 17. Qc2 {1-0 (44) Bobadilla Viera,J (2329)-Zapata Charles,S (2351) Buenos Aires 2018}) 14. Qc2 Qd7 15. Bb2 f6 16. Rfd1 Rfc8 (16... c6 $11) 17. Ba1 (17. a5 $16 Nd5 18. Nxd5 Bxd5 19. d4) 17... c5 18. bxc6 (18. a5 $5 {[%cal Ra5b6]} Nd5 19. Nxd5 Bxd5 20. Bxd5+ Qxd5 21. Qc4 $11) 18... bxc6 {The position is equal.} 19. a5 Nd5 20. Qa4 Nb4 21. Ne4 {Accuracy: White = 44%, Black = 21%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Spiess, Gunter"]
[Black "Kulhanek, Tomas"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2414"]
[BlackElo "2303"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,74,50,38,66,70,90,66,87,45,64,45,85,74,93,81,75,81,75,68,105,66,68,39,91,66,122,66,102,97,97,100,90,43,40,44,46,47,54,46,88,18,17,16,19,20,41,41,41,41,41,41,41,41,41,41,41,41,45,45,49]} 1. Nf3 g6 2. d4 Bg7 3. c4 d6 4. Nc3 e5 5. e4 Nc6 6. Bg5 f6 7. Be3 Nh6 8. h3 {A42: Modern Defence: Averbakh Variation} Nf7 9. Qd2 {LiveBook: 6 Games} (9. c5 dxc5 10. dxe5 Nfxe5 11. Nxe5 fxe5 12. Bb5 Bd7 13. Bxc6 Bxc6 14. Bxc5 Bf8 15. Bxf8 Rxf8 {½-½ (30) Giri,A (2784)-Carlsen,M (2862) Wijk aan Zee 2015}) 9... f5 10. exf5 gxf5 {[#] And now ...f4 would win.} 11. g3 $146 ({Predecessor:} 11. dxe5 dxe5 12. Qxd8+ Ncxd8 {0-1 (46) Matosec,T (2070)-Fahrner,K (2319) Graz 2011}) 11... O-O 12. Bg2 e4 13. Ng1 Ne7 14. Nge2 d5 15. cxd5 Nxd5 16. Nxd5 Qxd5 17. O-O Bd7 18. Rfc1 c6 19. Qb4 b6 ({Black should try} 19... Qd6 $14 20. Qc3 Rfc8) 20. a4 Rfc8 (20... Qd6 $14 21. Qc4 a5) 21. Bf1 (21. Nf4 $16 Qd6 22. Qb3) 21... c5 22. dxc5 bxc5 23. Rxc5 Rxc5 24. Qxc5 Qxc5 25. Bxc5 Bxb2 26. Rb1 Be5 27. a5 Rb8 28. Rxb8+ ({White should play} 28. Rd1 $16 Rb7 29. Nf4) 28... Bxb8 $11 29. Nd4 Ne5 30. f4 Nd3 31. Bxd3 $1 {White is slightly better.} exd3 $14 {[%mdl 4096] Endgame KBB-KBN} 32. Kf2 Bc7 33. Bb4 $1 Bd8 34. Ke3 Bf6 35. Kxd3 Bxd4 36. Kxd4 a6 37. Ke5 Kf7 {Accuracy: White = 60%, Black = 39%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Roeder, Matthias"]
[Black "Mueller-Dehn, Christian"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2396"]
[BlackElo "2167"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,124,11,0,19,10,16,14,27,23,23,52,79,54,113,113,117,111,129,106,124,108,124,118,120,114,124,122,116,114,129,121,144,136,165,163,158,166,202,129,282,249,252,252,250,245,240,239,239,217,222,174,300,203,347,342,509,502,527,516,614,598,605,604,584,579,763,759,759,751,748,715,733,720,647,214,230,45,225,16,176,8,8,8,8,8,8,8,12,0,5,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0]} 1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. O-O e6 5. b3 Nf6 6. d3 h6 7. Bb2 Be7 8. Nbd2 O-O 9. Ne5 a5 {A07: Réti Opening: New York and Capablanca Systems} 10. e4 Bh7 11. a3 {LiveBook: 13 Games} dxe4 $146 ({Predecessor:} 11... Nbd7 12. Nxd7 Nxd7 13. Qe2 Bf6 14. d4 Qb6 15. e5 Be7 16. c4 dxc4 17. Qxc4 {½-½ (42) Vajda,L (2596)-Balogh,C (2621) Slovakia 2016}) 12. dxe4 Nbd7 13. Nd3 Qc7 14. Qe2 a4 15. b4 Rfe8 16. c4 Rad8 (16... c5 $14) 17. f4 $16 Nf8 18. Rad1 N6d7 19. Nf3 Nb6 20. Nf2 Rxd1 21. Rxd1 c5 22. Be5 Qc8 23. b5 Rd8 24. Bc3 Rxd1+ 25. Nxd1 ({Much worse is} 25. Qxd1 $6 Nxc4 26. Qxa4 Ne3 $11) 25... Nfd7 26. Nb2 Bf6 27. e5 Be7 28. Nd2 f6 29. Bh3 {Black must now prevent exf6.} Bf5 $2 (29... Nf8 $16 30. Ne4 fxe5) 30. g4 Bh7 31. exf6 Bxf6 32. Qxe6+ Kh8 33. Bxf6 gxf6 34. Kf2 Qd8 35. Qd6 Qe8 (35... Nc8 $142 36. Qd5 Qc7) 36. Nd1 Bg8 (36... Qd8 $142 37. Nc3 Kg7) 37. Ne3 $18 Be6 (37... Qd8 $142 38. g5 hxg5 39. fxg5 fxg5 40. Qh6+ Bh7) 38. Bg2 Qg8 39. h3 h5 40. Bxb7 hxg4 41. hxg4 Bxg4 42. f5 Qg5 43. Qh2+ Kg7 44. Ne4 Qh5 45. Qg3 Ne5 46. Nxc5 Kf7 47. Bg2 $2 (47. Be4) 47... Bxf5 {[#]} 48. Kg1 $2 (48. Nb7 $1 $18 {[%cal Rb7d6]} Bd7 49. Bf1) 48... Bg6 $2 ({Black should play} 48... Nexc4 $14 49. Qc7+ Ke8) 49. Ne4 $2 ({White must play} 49. Nb7 $18) 49... Nbd7 $2 (49... Nbxc4 $11 50. Nxc4 Qd1+ 51. Kh2 Qh5+ 52. Bh3 Qe2+ {[%mdl 64] Double Attack} 53. Qg2 Qxg2+ 54. Bxg2 Nxc4) 50. c5 $2 ({Better is} 50. Nd6+ $18 Kf8 51. b6) 50... Bxe4 $1 $11 {The position is equal.} 51. Bxe4 Nxc5 52. Bd5+ Ke7 53. Qg7+ Nf7 54. Bxf7 {[%mdl 64] [#] Overworked Piece} Qxf7 55. Nf5+ Ke6 56. Nd4+ Ke7 $1 57. Nf5+ Ke6 58. Nd4+ Ke7 $1 59. Nc6+ Ke8 60. Qh8+ Qf8 61. Qh5+ Kd7 62. Qd5+ Kc7 {[%mdl 32768] Accuracy: White = 53%, Black = 25%. . Sensor Board Error (Ke4/e5)?} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Zhang, Ziji"]
[Black "Pechac, Jergus"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2387"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,77,112,84,97,66,88,95,96,70,79,71,148,162,157,75,58,31,112,115,106,110,166,25,38,22,127,120,181,0,0,0,178,147,200,220,218,199,404,414,392,436,332,264,410,426,427,420,396,392,396,396,1435,777,29989,29990,29993,1136,1091,1129]} 1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 O-O 6. O-O a6 7. Re1 b5 {B08: Pirc Defence: Classical System} (7... Nc6 8. d5 Na7 9. a4 e6 10. Be3 Re8 11. Bf1 exd5 12. exd5 Bg4 13. h3 Bxf3 14. Qxf3 Nd7 15. Re2 Nc8 {½-½ (62) Fressinet,L (2662)-Aronian,L (2805) Riadh 2017}) 8. e5 Ne8 9. a4 b4 10. Nd5 Nc6 11. Bf4 {LiveBook: 3 Games} Bb7 12. Ne3 $146 ({Predecessor:} 12. Qd2 Nxd4 13. Qxd4 dxe5 14. Nxe7+ Qxe7 15. Bxe5 {0-1 (52) Ragger,M (2698)-Petrosian,T (2625) Berlin 2015}) 12... Na5 13. Ng4 c5 14. dxc5 dxc5 15. Qc1 Qd5 ({Better is} 15... Qd7 16. h3 Nc7) 16. Bh6 $1 $16 Nc6 17. Bxg7 (17. Qg5 $142) 17... Nxg7 18. Bd3 Ne6 (18... Nd4 $1 $14 19. Be4 Nxf3+ 20. Bxf3 Qd7) 19. Be4 Qd7 20. c3 $1 h5 (20... bxc3 $16 21. bxc3 Na5) 21. Rd1 (21. Nh6+ $1 $18 Kg7 22. Ng5) 21... Qc8 $11 22. Ne3 $1 {[%cal Re3d5] Nd5 is the strong threat.} Nf4 (22... Kg7 $11 {keeps the balance.}) 23. Kh1 $16 Kh7 (23... Rd8 $16) 24. Nc4 Qg4 {[%csl Gf4][%cal Rg4g2]} 25. Ne3 $36 {[%mdl 2048] White is pushing.} Qc8 26. cxb4 Nxb4 {[#]} (26... cxb4 $16 27. Qc4 Nd8) 27. Bxb7 $1 $18 Qxb7 {[#]} 28. Nf5 $1 {[%mdl 512]} Qc8 $2 (28... Nbd5 {was called for.}) (28... gxf5 29. Qxf4) 29. e6 ({Not} 29. Qxf4 Qxf5 30. Qxf5 gxf5 $11) 29... gxf5 30. Qxf4 fxe6 31. Qh4 Rf6 (31... Qe8 $142 32. Ng5+ Kh8) 32. Qxh5+ Kg7 33. Qg5+ Kh8 34. Qh4+ Kg7 35. Ne5 Qe8 $2 (35... Qh8 36. Qg5+ Kh7) 36. Qg5+ Kh7 37. Ra3 Rh6 38. Rd7 (38. Rh3 $142 Rxh3 39. gxh3 Qf7 40. Nxf7 Nd3 41. Rxd3 f4 42. Rd1 f3 43. Rg1 Rf8 44. Qh6#) 38... Nd5 {[#]} 39. Rxd5 $1 {[%mdl 512] Accuracy: White = 57%, Black = 17%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Vokac, Marek"]
[Black "Wiley, Thomas"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2380"]
[BlackElo "2186"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,115,20,14,-3,3,-20,0,0,0,0,0,-10,0,0,0,0,0,0,0,-15,-16,-8,0,0,27,-2,0,0,0,0,20,10,23,0,0,0,0,0,0,0,1,2,9,4,16,9,9,9,15,4,8,8,8,8,8,13,11,8,23,14,29,0,18,0,25,16,16,15,83,85,85,85,93,80,141,145,146,93,111,101,177,96,112,56,56,56,229,166,152,229,219,204,111,70,71,58,207,172]} 1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 b6 5. Bg2 Bb7 6. O-O O-O 7. c4 c5 8. d3 d5 9. cxd5 {A30: Symmetrical English: Double Fianchetto and Hedgehog} Nxd5 (9... Qxd5 10. Nc3 Qd7 11. d4 cxd4 12. Qxd4 Qxd4 13. Nxd4 Bxg2 14. Kxg2 Rc8 15. Rfd1 Nc6 16. Nxc6 Rxc6 {½-½ (36) Kamsky,G (2676)-Moussard,J (2567) Bastia 2017}) 10. Bxg7 Kxg7 {LiveBook: 3 Games} 11. Qd2 {The position is equal.} e6 $146 ({Predecessor:} 11... Nc7 12. Rc1 Nc6 13. Rc4 h6 14. d4 Nxd4 15. Nxd4 Bxg2 16. Kxg2 cxd4 17. Rxd4 {½-½ (26) Gomes,M (2306)-Mohota,N (2262) Delhi 2016}) 12. Nc3 Nd7 13. Rfd1 Nxc3 14. Qxc3+ Qf6 15. Rac1 Rfd8 16. a3 Qxc3 17. Rxc3 Nf6 18. Rdc1 a5 19. Nd2 Bxg2 20. Kxg2 Rdb8 21. Rc4 Nd7 22. R4c3 Nf6 23. R3c2 Ra7 24. Nc4 Nd7 25. Nd6 a4 26. Rb1 axb3 27. Rxb3 Kf8 28. Rcb2 Ke7 29. Nc4 {[%cal Rc4b6]} Kd8 30. f4 ({Reject} 30. Nxb6 Rab7 $17) 30... Kc7 31. Kf3 f5 32. g4 Kc6 33. Rb5 Ra6 34. g5 h6 35. gxh6 Rh8 36. a4 Rxh6 37. a5 bxa5 38. Nxa5+ Kd6 39. Nc4+ Kc6 40. Na5+ Kd6 41. Nc4+ Kc6 42. Ra5 Rxa5 43. Nxa5+ $11 {[%mdl 4096] Endgame KRN-KRN} Kd6 (43... Kd5 $11) 44. Nc4+ $16 Kc7 {[#]} 45. Kg3 $1 Rh8 46. Ra2 {And now Ra7+ would win.} Re8 (46... Kb7 $142) 47. Ra7+ Kc6 48. Ra6+ (48. h4 $142) 48... Kc7 49. e3 Re7 (49... Kb7 $16 {is a better defense.} 50. Rd6 Kc7) 50. Ra8 ({White should play} 50. Kh4 $18) 50... e5 {[#]} 51. fxe5 (51. Ra7+ $1 $16 Kb8 52. Ra6) 51... Kb7 $14 52. Ra5 g5 $2 (52... Nxe5 $14 53. Nxe5 (53. Rxc5 Nxc4 54. Rxc4 Rxe3+ 55. Kf4 Rxd3 $11) 53... Rxe5) 53. d4 {Strongly threatening Nd6+.} f4+ 54. exf4 gxf4+ 55. Kxf4 {Hoping for d5.} cxd4 56. Ke4 {Threatens to win with Kd5.} Rh7 57. Ra2 {Nd6+ is the strong threat.} Rh4+ (57... Kc6 $14) 58. Kd5 {Precision: White = 45%, Black = 45%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Gschnitzer, Adrian"]
[Black "Ludvik, Tomas"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2368"]
[BlackElo "2089"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,56,44,43,58,39,41,31,57,43,66,0,-24,-190,-234,-198,-102,-55,0,-8,-7,-49,-13,-16,-18,-39,-11,-10,-10,-4,-10,-145,-131,-125,165,161,29999]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qc7 8. Bxf6 gxf6 9. Be2 Nc6 {B96: Sicilian Najdorf: 6 Bg5 e6 7 f4, lines other than 7...Qb6 and 7...Be7} 10. Qd3 Be7 (10... Nxd4 11. Qxd4 Qc5 12. Qd3 Bd7 13. O-O-O Rc8 14. Kb1 b5 15. a3 h5 16. f5 b4 17. axb4 Qxb4 18. fxe6 fxe6 {1-0 (35) Sutovsky,E (2650)-Najer,E (2679) Poikovsky 2017}) 11. O-O-O Nxd4 12. Qxd4 {LiveBook: 7 Games} h5 $146 ({Predecessor:} 12... Bd7 13. Bh5 Rc8 14. f5 O-O 15. Qd2 Qc5 16. Qh6 Bb5 17. Rhe1 {1-0 (32) Van der Wiel,J (2424)-Overeem,M (2159) Leiden 2014}) 13. f5 Bd7 14. Qd3 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 15. a3 Qc5 16. Qh3 (16. e5 $14) 16... a5 $11 17. Bxh5 $2 {[#]} (17. fxe6 $11 {and White is okay.} fxe6 18. e5) 17... b4 $1 $19 {[%cal Rb4c3]} 18. Nb1 {Black should prevent fxe6.} Qe5 ({Better is} 18... exf5 $19 {White must now prevent ...Ba4.} 19. c3 Qe5) 19. g4 Rb8 20. axb4 Kf8 21. Rhf1 Rxb4 22. Nc3 a4 23. Qf3 a3 24. bxa3 Rc4 25. Rd3 d5 26. exd5 (26. Qg3 $1 $11 {was the only way to keep the balance.}) 26... Bxa3+ $17 27. Kd1 {fxe6 is the strong threat.} exd5 $2 {[%mdl 8192]} (27... exf5 $17 {and life is bright.} 28. d6 fxg4) 28. Qxd5 $18 {[%csl Gh5][%cal Rd5f7][%mdl 64] [#] Double Attack} Rxc3 $2 (28... Qxd5 $18 29. Nxd5 {[%mdl 64] Discovered Attack} Bb5) 29. Qxf7# {Accuracy: White = 34%, Black = 34%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Liu, Zhaoqi"]
[Black "Kacharava, Nikolozi"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "2300"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "174"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,174,0,1,-31,0,-10,-6,-6,-6,-9,-10,-7,-7,-6,-6,-8,0,0,6,0,14,13,14,0,16,12,16,8,12,-8,0,-11,-20,-44,-22,-37,-47,-50,-50,-57,-43,-39,-38,-27,-14,-30,0,-18,-14,-17,-17,-14,-18,-24,-15,-25,0,0,0,0,0,-14,0,0,0,0,0,-15,-22,-24,-25,-12,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12,-15,-17,-20,-75,-75,-131,-41,-128,-100,-100,-100,-408,-408,-408,-406,-394,0,-195,0,-378,-347,-347,-325,-273,-248,-953,-953,-953,-953,-953,-953,-953,-953,-953,-950,-884,-877,-916,-907,-831,0,-495,0,-806,-750,-1064,-1037,-2108,-1969,-1005,-750,-29974,-29975,-29976,-29977,-29977,-29977,-29976,-29976,-29985,-29981,-29991,-29992,-29992,-29993]} 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. d3 Nf6 7. O-O O-O 8. Rb1 a5 9. a3 Re8 {LiveBook: 262 Games} 10. Bd2 {A26: English Opening vs King's Indian with ...Nc6 and d3} (10. Nd2 Be6 11. Nd5 Qd7 12. Nxf6+ Bxf6 13. Ne4 Bg7 14. Bh6 Bh3 15. Bxg7 Kxg7 16. e3 Bxg2 17. Kxg2 a4 18. Nc3 Nd8 {0-1 (65) Iturrizaga Bonelli,E (2650)-Mamedyarov,S (2804) chess.com INT 2018}) 10... Nd4 (10... e4 $5 {[%cal Re4f3]} 11. dxe4 Nxe4 $11) 11. b4 $146 ({Predecessor:} 11. Ne1 c6 12. b4 axb4 13. axb4 Be6 14. e3 Nf5 15. Nf3 Bd7 16. Qb3 h6 {0-1 (47) Raicevic,M (2348)-Pavlovic,N (2335) Vrnjacka Banja 2006}) 11... axb4 12. axb4 {The position is equal.} Bg4 13. e3 Nxf3+ 14. Bxf3 Bxf3 15. Qxf3 c6 16. e4 Qd7 17. Ra1 h5 18. h4 Qe6 19. Kg2 Nd7 20. Qe2 Kh7 21. Be3 Rf8 22. b5 Bh6 23. Bxh6 Kxh6 24. Qe3+ Kg7 25. bxc6 bxc6 26. Ne2 Rfb8 27. Rxa8 Rxa8 28. Rd1 Ra3 29. Qc1 Ra2 30. Rd2 Ra8 31. Qc3 Nf6 32. f3 d5 33. cxd5 cxd5 34. Rc2 d4 35. Qc7 Ra3 36. Nc1 Ne8 37. Qb8 Nf6 38. Qd8 Qd7 39. Qb8 Ra5 40. Rc7 Rb5 (40... Qa4 {feels hotter.} 41. Qb3 Qe8 42. Kf2 Ra8 43. Qb7 Ra1) 41. Rxd7 Rxb8 $11 {[%mdl 4096] Endgame KRN-KRN} 42. Re7 Rb2+ 43. Kf1 Rb1 44. Rc7 Ne8 45. Rc5 Nd6 46. Ke1 Nb5 47. Kd2 f6 48. Ne2 Rb2+ 49. Rc2 Rb3 50. Rc6 Rb2+ 51. Rc2 Rb1 52. Rc1 Rb4 53. Rc6 Na3 54. Rc7+ Kf8 55. Ra7 Rb2+ 56. Kd1 $1 Nb1 {White must now prevent ...Rd2+.} 57. Ke1 (57. Ra1 $11 {remains equal.}) 57... Nd2 $17 58. Kf2 {[#]} (58. Ra8+ $142 Kg7 59. Ra7+ Kg8 60. Ra8+ Kg7 61. Ra7+ Kh6 62. Ng1) 58... Rb3 (58... Nb3 $1 $17 {[%cal Rb3c1] And now ...Nc1 would win.} 59. Ra8+ Kg7 60. Ra7+ Kh6) 59. Nc1 (59. Ng1 $15) 59... Rc3 60. Ke2 Nxe4 61. fxe4 $2 {[%mdl 8192]} (61. Ra8+ $17 Kf7 62. Ra7+ Kf8 63. Ra8+ Kf7 64. Ra7+ Kg8 65. Ra8+ Kh7 66. Ra7+ Kh8 67. Ra8+ Kg7 68. Ra7+ Kg8 69. Ra8+ Kg7 70. Ra7+ Kf8) 61... Rxc1 {KR-KR} 62. Ra6 Kg7 63. Ra7+ Kf8 (63... Kh6 $142 64. Ra2 Rh1) 64. Ra6 $19 {[#]} Kg7 $2 (64... Kf7 $1 65. Ra2 Rg1) 65. Ra7+ Kh6 66. Ra6 Rc2+ 67. Kf3 Rd2 68. Ra3 $2 (68. Rxf6 Rxd3+ 69. Kf2) 68... g5 69. hxg5+ Kxg5 70. Rb3 Kg6 71. Ra3 Kf7 72. Ra7+ Ke6 73. Ra6+ Ke7 74. Ra3 Kd6 75. Ra6+ Ke7 $2 ({Black should try} 75... Kc5 $19 76. Rxf6 Rxd3+ 77. Kf2 Re3) 76. Ra7+ $2 {[%mdl 8192]} (76. Ra3 $1 $11 Kd6 77. Ra6+ Kc5 78. Rxf6 Rxd3+ 79. Kg2) 76... Kd6 (76... Ke8 $142 77. Ra3 Kd7) 77. Ra6+ Kc5 78. Rxf6 Rxd3+ 79. Kf2 Re3 80. Rf5 Rxe4 81. Rxh5 d3 {Black mates.} 82. g4 Kd4 83. g5 d2 84. Rh1 Kd3 85. g6 Rg4 86. Rh8 d1=Q {[%csl Gd3][%cal Rd1e2]} 87. Rd8+ Rd4 {Accuracy: White = 41%, Black = 59%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Gomes, Mary Ann"]
[Black "Liu, Guanchu"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2296"]
[BlackElo "2425"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,58,42,49,10,0,-12,-1,-14,-4,-16,8,8,10,0,13,16,24,20,14,5,14,7,7,0,6,0,0,0,6,6,6,0,0]} 1. Nf3 e6 2. c4 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. b3 O-O 7. Bb2 c5 8. e3 d5 9. Qe2 Nc6 10. d3 Qc7 11. Nc3 Rad8 12. Rfd1 Qb8 13. cxd5 {A14: English Opening: 1...e6 with b3 by White} (13. d4 dxc4 14. bxc4 Na5 15. Rac1 cxd4 16. exd4 Rc8 17. d5 Nxc4 18. dxe6 Nxb2 19. Qxb2 fxe6 20. Qe2 Bc5 {½-½ (42) Matlakov,M (2676)-Gordievsky,D (2455) St Petersburg 2013}) 13... exd5 14. d4 Rfe8 {LiveBook: 3 Games} 15. Qc2 $146 {White is slightly better.} (15. Ne5 $5) ({Predecessor:} 15. Ne5 Nb4 16. a3 Na6 17. Nb5 Bf8 18. Rac1 Ne4 19. Nd3 Bc6 20. Ne5 Bb7 {½-½ (64) Darini,P (2263)-Matlakov,M (2490) Vung Tau 2008}) 15... cxd4 16. Nxd4 Nxd4 17. exd4 Bb4 18. a3 Bxc3 19. Bxc3 {[%cal Bb2c3,Bc3d2,Bd2f4][%mdl 32]} Ne4 20. Bd2 Ba6 21. Bf4 Qb7 22. Rac1 Rc8 {The position is equal.} 23. Qb2 h6 24. Bh3 Rxc1 25. Rxc1 Ng5 26. Bxg5 hxg5 27. Bg2 Qd7 28. h3 Qf5 29. Qc3 Rc8 {Accuracy: White = 55%, Black = 51%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Chkhaidze, Nikoloz"]
[Black "Chudinovskikh, Alexander M"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2290"]
[BlackElo "2184"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,78,0,18,12,32,30,37,37,129,62,64,58,72,91,111,18,12,20,21,16,18,27,21,-27,0,-60,-52,-68,-44,-148,-157,-150,-145,-202,-196,-279,-218,-202,-206,-312,-117,-235,-225,-337,-338,-328,-334,-364,-355,-316,-252,-245,-259,-934,-852,-940,-908,-1187,-1151,-2337,-2207,-29988,-29989]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 d5 5. e3 O-O 6. Nf3 b6 7. cxd5 exd5 8. Rc1 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5} a6 (8... Be7 9. Bd3 Bb7 10. O-O c5 11. dxc5 bxc5 12. Re1 Nc6 13. Bb1 Re8 14. e4 dxe4 15. Nxe4 Nd4 {½-½ (54) Vitiugov,N (2730)-Inarkiev,E (2690) Satka 2018}) 9. Bd3 Re8 {LiveBook: 4 Games} 10. Ne5 {The position is equal.} c5 $146 ({Predecessor:} 10... Bb7 11. O-O Bd6 12. f4 c5 13. Be1 Nbd7 14. Bh4 Nf8 {½-½ (38) Ivanov,J (2435)-Maiorov,N (2525) San Sebastian 2009}) 11. O-O c4 12. Bb1 Bd6 {[#]} (12... b5 $14) 13. f4 (13. e4 $1 $16) 13... b5 $14 14. Qf3 Ra7 15. a3 Rc7 16. e4 (16. g4 $16) 16... dxe4 $11 17. Nxe4 Nxe4 18. Qxe4 f5 19. Qe3 Nc6 20. Kh1 Bf8 21. Qh3 ({White should try} 21. Rcd1 $11) 21... Nxe5 $15 ({Much weaker is} 21... Nxd4 $6 22. Rcd1 $11) 22. fxe5 {aiming for Ba5.} Qxd4 {[%mdl 64] Double Attack} 23. Ba5 (23. Bc3 $15 Qg4 24. Bxf5 Bxf5 25. Rxf5 Qxh3 26. gxh3) 23... Rf7 $17 24. Bc3 Qd7 25. Rf4 (25. Rcd1 $17 {was necessary.} Qe6 26. Bc2) 25... g6 $19 26. Rcf1 (26. Rd4 {was worth a try.} Qe6 27. Re1) 26... Bb7 27. Qg3 {Strongly threatening Bxf5.} Bg7 28. h4 (28. R4f2 $142) 28... Qe6 $2 (28... Rxe5 $19 {and Black stays clearly on top.} 29. h5 Re2) 29. Re1 (29. h5 $17 {only move.}) 29... Bh6 30. Rd1 (30. Rd4 $142 f4 31. Qf2) 30... Bxf4 31. Qxf4 {Black should prevent Rd6.} Rd7 32. Re1 Red8 33. Bc2 Rf8 34. Kh2 {[#]} h6 $1 {[%cal Bh7h6,Bh6g5,Bg5g4][%mdl 32]} 35. Re3 $2 {[#]} (35. Rf1) (35. Qxh6 Rh7) 35... g5 $1 36. Rg3 (36. hxg5 hxg5) 36... Rg7 37. hxg5 hxg5 38. Qf2 f4 39. Rf3 g4 {Accuracy: White = 21%, Black = 59%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Ajay Krishna, S."]
[Black "Krivonosov, Oleg"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2289"]
[BlackElo "2390"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,89,-1,5,-8,-5,-27,-14,-20,13,9,5,0,0,0,0,-8,24,25,58,51,52,52,52,52,47,47,47,47,48,48,50,51,48,51,46,20,21,0,39,29,51,45,41,33,47,40,51,33,40,33,51,40,40,40,47,33,68,68,68,33,33,34,45,0,24,36,883,869,870,852,837,845,838,442,831,831]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. O-O O-O 6. b3 c5 7. e3 Nc6 8. Bb2 b6 {LiveBook: 830 Games} 9. Re1 {A14: English Opening: 1...e6 with b3 by White} (9. Nc3 Bb7 10. cxd5 Nxd5 11. Nxd5 Qxd5 12. d4 Qf5 13. Ne5 Nxe5 14. Bxb7 Rad8 15. Qe2 Qd3 16. Rae1 Qxe2 17. Rxe2 Nd3 18. Ba1 cxd4 19. Bxd4 Bf6 20. Bxf6 gxf6 {1-0 (99) So,W (2788)-Dominguez Perez,L (2739) Saint Louis 2017}) 9... Bb7 10. a3 Qd7 $146 ({Predecessor:} 10... Rc8 11. d3 dxc4 12. bxc4 Qc7 13. Nc3 Rfd8 14. Qc2 Qb8 15. Rad1 Qa8 16. Qe2 Nd7 17. Ne4 Na5 18. Ned2 {½-½ (18) Gaurav,R (1705)-Pimpalkhare,V (1885) Panchavati 2016}) 11. d4 {The position is equal.} cxd4 12. exd4 Rfd8 13. Nbd2 Rac8 14. Rc1 Qe8 15. c5 Nb8 {[%cal Rb6c5]} 16. b4 Ne4 17. Ne5 Nc6 {With the idea ...Nxe5.} 18. Nxe4 {[#] Nxc6 is the strong threat.} Nxe5 19. Nf6+ Bxf6 20. dxe5 Bg5 21. f4 Be7 {[%cal Rb6c5]} 22. cxb6 $1 axb6 23. Qd4 b5 24. Qb6 Bc6 25. Bd4 Bd7 26. Bb2 Rb8 27. Qf2 Rdc8 28. Bf1 h6 29. Bd3 Rxc1 30. Rxc1 Rc8 31. Qd2 Qd8 32. Bd4 Rxc1+ 33. Qxc1 f5 34. Kf2 g5 35. Ke2 gxf4 36. gxf4 Kf7 37. Kd2 Qg8 38. Qc7 Qg2+ 39. Kc3 (39. Be2 $5 {[%cal Rc7d7]} Ke8 40. Qb8+ Kf7 41. Qb7 $11) 39... Qa2 40. Qxd7 {[#] Threatens to win with Bc5.} Qa1+ $2 {[%mdl 8192]} (40... Qxa3+ $14 41. Kd2 Qxb4+ 42. Ke3 Qe1+ 43. Be2 Qc1+ 44. Kf3 Qh1+ {[%mdl 64] Double Attack} 45. Kf2 Kf8) 41. Kc2 $18 {White is clearly winning.} Qxd4 42. Bxb5 Qf2+ 43. Kb3 Qh4 44. Qe8+ Kg7 45. Bd7 {Accuracy: White = 63%, Black = 44%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Olsarova, Karolina"]
[Black "Xiang, Zeyu"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2263"]
[BlackElo "2440"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,126,1,2,0,0,5,7,7,8,3,10,10,12,12,12,5,20,3,2,2,2,0,0,-1,0,-18,7,0,0,-10,5,7,17,-30,-41,-34,-20,-30,-16,-18,-21,-28,-21,-32,-22,-20,-12,-13,-16,-41,-41,-41,-8,-9,-8,-8,-8,-8,0,-8,0,-41,-41,-129,-135,-135,-120,-126,-164,-150,-134,-162,-91,-91,-94,-95,-97,-97,-93,-85,-87,-87,-105,-109,-100,-279,-328,-312,-316,-291,-280,-272,-255,-418,-424,-415,-414,-372,-385,-1851,-1832,-29956,-29957,-29956,-29957,-6112,-6095,-4134,-4133]} 1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. c3 cxd4 5. exd4 Bf5 (5... Nf6 6. Bd3 Bg4 7. Qb3 Qc8 8. Nd2 e6 9. Ngf3 Bh5 10. O-O Be7 11. Rae1 a6 12. Qc2 Bg6 13. Ne5 Nxd4 14. Qa4+ Nc6 15. Nxg6 hxg6 16. Nf3 b5 17. Qd1 Qd7 18. a4 bxa4 19. Qxa4 {1-0 (84) Nakamura,H (2780)-Topalov,V (2749) Saint Louis 2017}) 6. Nf3 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} e6 7. Nbd2 Bd6 8. Bxd6 Qxd6 9. Be2 h6 10. O-O Nf6 {LiveBook: 8 Games} 11. Re1 O-O 12. Bf1 Ne4 13. Nxe4 Bxe4 14. Nd2 $146 Bf5 15. Nb3 Qc7 16. Nc1 Na5 17. Bd3 Qf4 18. Qc2 Bxd3 19. Nxd3 Qf5 20. Qe2 Nc4 21. Rad1 Rfe8 22. Qf1 Re7 23. Re2 Rc8 24. Ne5 Nxe5 25. Rxe5 Qc2 26. Qe2 (26. Re2 {feels hotter.} Qa4 27. a3 b5 28. f4 a5 29. f5) 26... Qxe2 27. Rxe2 $11 {[%mdl 4096] Endgame KRR-KRR} b5 28. a3 g5 29. Re3 a5 30. Kf1 Rb7 31. Ke2 Kg7 32. Rg3 f5 33. h4 g4 34. f3 h5 {Threatens to win with ...f4.} 35. f4 Rbc7 36. Kd2 {[#]} b4 $1 {[%mdl 512]} 37. axb4 axb4 38. Ra1 Rb8 39. Ra2 Rcb7 40. Kc1 Kf6 41. Kb1 ({Better is} 41. Re3 $15) 41... bxc3 $17 42. Rxc3 Rb4 43. Rd3 {[#]} g3 $1 {[%mdl 512]} 44. Kc2 (44. Rxg3 Rxd4) 44... Rg8 45. Ra6 {[#]} Rb7 (45... Rc4+ $1 $19 46. Kb1 Rcc8) 46. Re3 Re7 47. Ra1 Rg4 48. Rf1 Rxh4 49. Rxg3 Rg4 50. Rxg4 fxg4 {KR-KR} 51. b4 Kf5 {Strongly threatening ...h4.} 52. Kd3 $2 (52. Kb3 $17 {was the only chance.}) 52... h4 $19 53. Ke3 Ra7 54. Rb1 {If White can now play b5 this consolidates a bit.} Ra3+ 55. Kf2 Ra2+ ({But not} 55... Kxf4 56. b5 $17) 56. Kf1 $2 (56. Kg1) 56... Ra6 57. b5 Rb6 58. Ke2 Kxf4 59. Kd3 $2 (59. Rb3) 59... Kg3 60. Rb2 h3 61. gxh3 gxh3 62. Kc3 h2 63. Rb1 {[#]} Rxb5 $1 {[%mdl 512] Precision: White = 39%, Black = 66%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Kozak, Antoni"]
[Black "Naumkin, Igor"]
[Result "1-0"]
[ECO "E17"]
[WhiteElo "2236"]
[BlackElo "2418"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,75,13,18,26,32,35,14,29,16,40,22,29,23,18,-33,-34,-57,18,14,11,12,112,113,122,102,108,114,113,101,164,167,164,135,283,278,268,185,471,489,478,465,765,748,727,704,1026,1022,921,912,863,853,1133,1120,1234,1233]} 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Re1 d5 8. cxd5 exd5 9. Nc3 Na6 10. Bf4 c5 11. dxc5 Nxc5 12. Rc1 {LiveBook: 62 Games} a5 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7} 13. Bh3 Nfe4 14. Be5 {[#]} f5 $146 {The position is equal.} ({Predecessor:} 14... Bc8 15. Bxc8 Nxc3 16. Rxc3 Rxc8 17. Qd4 f6 18. Bf4 Qd7 19. Rec1 Rfd8 20. Be3 {½-½ (46) Bacrot,E (2705)-Kryvoruchko,Y (2679) Germany 2012}) 15. Nd4 g6 16. Ndb5 Rc8 17. a3 Qd7 18. b4 (18. e3 $11) 18... axb4 19. axb4 Nxc3 (19... Ne6 $15) 20. Nxc3 $11 Ne6 {[#] aiming for ...d4.} 21. Bg2 {[%cal Rc3d5]} Rcd8 (21... Bxb4 $11 {keeps the balance.} 22. Bxd5 Rc5 23. Bxb7 Qxb7) 22. Qb3 $16 {Threatens to win with Red1.} Bf6 23. Bxf6 Rxf6 24. e3 Kg7 25. Ra1 Bc6 (25... Qf7 $16) 26. b5 $18 Bb7 {Black wants to play ...d4.} 27. Red1 {[%cal Rg2d5]} d4 (27... Nc5 $16 28. Qb2 Qe6) 28. Ra7 Nc5 29. Qc4 Rd6 $2 (29... Qf7 30. Rxd4 Qxc4 31. Rxc4 Rf7 32. Rxc5 bxc5) 30. Rxd4 {White is clearly winning.} Rxd4 31. exd4 Ne4 (31... Qxd4 $142 32. Bxb7 (32. Qxd4+ Rxd4 33. Rxb7+ Nxb7 $16) 32... Qxc4 33. Bd5+ {[%mdl 64] Discovered Attack} Kf6 34. Bxc4 Ke5) 32. Nxe4 fxe4 {[#]} 33. Bxe4 $1 {[%mdl 512]} Bxe4 34. Rxd7+ Rxd7 {KQ-KRB} 35. Qe6 {[%mdl 64] Double Attack} Bf5 36. Qxb6 Re7 37. f3 Bh3 38. Kf2 {Accuracy: White = 57%, Black = 18%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Schnabel, Ralf"]
[Black "Low, Zhen Yu Cyrus"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2206"]
[BlackElo "2385"]
[Annotator "TA"]
[PlyCount "37"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,37,21,24,4,33,28,32,-16,-9,-21,31,5,2,1,7,6,25,16,30,-95,-93,-153,-156,-151,-156,-229,-226,-271,-277,-490]} 1. e4 g6 2. Nc3 Bg7 3. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} c5 4. h5 Nc6 5. d3 e6 {[%cal Be7e6,Be6e5][%mdl 32]} 6. Bf4 $146 {B06: Modern Defence} ({Predecessor:} 6. Be3 Qa5 7. Bd2 Qd8 8. Be3 Qa5 9. Qd2 b5 10. e5 f5 11. exf6 Nxf6 {½-½ (41) Wei,Y (2732)-Maghsoodloo,P (2577) Chengdu 2017}) 6... d6 7. Qd2 Nd4 8. Nd1 {White is slightly better.} e5 9. Be3 d5 ({Black should try} 9... Nf6 $11) 10. f3 Ne7 11. c4 dxc4 12. dxc4 Be6 13. Nc3 Qa5 14. Bd3 {[#]} (14. Kf2 $11 {keeps the balance.}) 14... Nb3 $1 $36 {[%cal Rb3d2][%mdl 2560] Black is on the roll.} 15. Qd1 (15. axb3 $142 Qxa1+ 16. Kf2) 15... Nxa1 16. Qxa1 O-O-O 17. Be2 (17. Qb1 $17 {was worth a try.}) 17... Nc6 $19 18. b3 Nb4 {[#] ...Nc2+ is the strong threat.} 19. Kf2 $2 {Precision: White = 30%, Black = 50%.} (19. Qb1) 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Pniaczek, Marek"]
[Black "Neuman, Petr"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2146"]
[BlackElo "2428"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,76,0,0,-3,-7,-28,-18,-22,-6,-35,-39,-43,-22,-16,-4,-11,-10,-25,-30,-29,-17,-26,-24,-17,-19,-30,-25,-35,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,0,0,0,-2,-2,-2,-2,-4,-4,-152,-148,-4622,-4614,-4606,-1818]} 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. dxc5 {B53: Sicilian: 2...d6: Lines with Qxd4} Nxe4 7. cxd6 Nxd6 8. O-O Nc6 {LiveBook: 19 Games} 9. Nc3 g6 10. Qe2 $146 ({Predecessor:} 10. Bf4 Bg7 11. Bxd6 Bxc3 12. bxc3 Qxd6 13. Qxd6 exd6 {½-½ (21) Fedorov,A (2617)-Georgiev,K (2680) Fuegen 2006}) 10... Bg7 11. Nd5 O-O 12. c3 e6 {[%cal Be7e6,Be6e5,Be5e4][%mdl 32]} 13. Ne3 Qe7 14. Nc4 Nxc4 15. Qxc4 Rac8 16. Qe2 e5 17. Bg5 f6 18. Be3 b6 19. Rad1 f5 20. Rfe1 h6 21. Qb5 e4 22. Nd4 Bxd4 23. Bxd4 Qe6 24. f3 Rfd8 25. fxe4 Nxd4 26. cxd4 fxe4 27. d5 Qe5 28. Qa4 (28. Qb3 {is more complex.} Rd6 29. Qe3 Re8 30. Qxh6 Qxb2 31. Re3) 28... Rxd5 29. Rxd5 Qxd5 30. Qxe4 Qxe4 31. Rxe4 $11 {[%mdl 4096] Endgame KR-KR} Rc2 32. Re7 a5 {[%cal Ba7a5,Ba5a4,Ba4a3][%mdl 32]} 33. Re6 Rxb2 {[#] Strongly threatening ...Kf7.} 34. Rxg6+ Kh7 35. Rc6 b5 36. Rc5 {[#]} (36. a3 $11 {keeps the balance.}) 36... a4 $1 $17 {[%cal Ra4a3] And now ...a3 would win.} ({Don't take} 36... Rxa2 37. Rxb5 Ra1+ 38. Kf2 $15) 37. a3 $2 {[%mdl 8192]} (37. h4 $17) 37... b4 $19 38. axb4 a3 {Accuracy: White = 48%, Black = 77%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Vojta, Jakub"]
[Black "Gschnitzer, Oswald"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "2118"]
[BlackElo "2370"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,110,0,3,-20,26,39,14,-2,9,17,11,0,0,0,0,-12,0,0,0,0,0,-6,21,3,16,17,8,0,19,19,42,0,14,-3,-3,-2,37,44,70,72,80,0,91,92,94,90,91,78,81,10,8,1,108,15,42,0,41,0,36,0,0,-9,-14,-68,-68,-133,-133,-133,-133,-135,-137,-113,-88,-238,-238,-226,-168,-1900,-1417,-4850,-4133,-1249,-783,-6086,-6087,-3164,-719,-6079,-5418,-5065,-5065,-2360,-2262,-6079,-5218]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. b4 Nxb4 7. Bb2 {B31: Sicilian: 2...Nc6 3 Bb5 g6} Qc7 (7... a6 8. a3 axb5 9. axb4 Rxa1 10. Bxa1 d6 11. bxc5 Ne7 12. Qe2 b4 13. Qc4 Qa5 14. cxd6 Be6 {½-½ (34) Caruana,F (2832)-Carlsen,M (2835) London 2018}) 8. c3 Nc6 9. d4 d6 {LiveBook: 4 Games} 10. Na3 Bd7 (10... a6 $5 {[%cal Ra6b5]} 11. Bxc6+ Qxc6 $11) 11. dxc5 dxc5 12. Qd5 Nge7 (12... Nf6 {is interesting.} 13. Qxc5 Bf8 14. Qc4 Be6 15. Qe2 Bc5) 13. Qxc5 b6 14. Qe3 O-O 15. Red1 $146 Rad8 16. c4 Bg4 17. Nc2 Rxd1+ 18. Rxd1 Rd8 19. Rd3 Na5 20. Nb4 Rxd3 21. Qxd3 Nb7 22. Na6 Nc5 23. Nxc5 bxc5 24. Bc3 f6 25. Ne1 Be6 26. Nc2 Kf7 27. Ne3 $36 {[%mdl 2048] White is more active.} f5 28. f3 Qb6 29. Nd5 ({White should try} 29. a4 $16) 29... Qd6 (29... fxe4 $11 {keeps the balance.} 30. fxe4 Bxd5 31. exd5 e4 32. Qf1+ Nf5) 30. Ba5 $16 Nxd5 31. cxd5 Bc8 32. Bc6 Bh6 33. Qc4 (33. Bc3 $16) 33... Be3+ $11 34. Kh1 Ke7 {[#]} (34... Kg7 $11 {remains equal.}) 35. Qb3 (35. exf5 $1 $16 Bd4 36. fxg6 hxg6 37. Qb5) 35... f4 36. Be1 g5 37. a4 Qc7 38. Qb5 Qb6 39. Ba5 Qxb5 40. Bxb5 {[%mdl 4096] Endgame KBB-KBB} ({Better is} 40. axb5 $11 Kd6 41. g4) 40... Bd7 $15 41. g3 ({White has to play} 41. Bc4 $1 $15) 41... Bxb5 $17 42. axb5 fxg3 43. hxg3 {KB-KB} h5 44. Kg2 {[#]} c4 $1 45. Bc3 (45. Kf1 $17) 45... Bd4 $19 46. Bd2 Kf6 47. f4 $2 (47. Bc1) 47... gxf4 {Black is clearly winning.} 48. gxf4 c3 49. Bc1 exf4 50. Bxf4 Be5 51. Bc1 c2 (51... Bd6 $142 52. Kf3 h4) 52. Kh3 Kg6 53. Kg2 Bf6 54. d6 Kf7 55. Ba3 Ke6 {Accuracy: White = 31%, Black = 52%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.15"]
[Round "6"]
[White "Mulenko, Alexander"]
[Black "Vojta, Tomas"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "2090"]
[BlackElo "2351"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,119,16,10,29,15,39,45,53,39,50,28,53,52,62,35,56,32,48,44,51,46,38,38,77,0,-13,-69,-95,-106,-63,-105,-102,-129,-128,-120,-131,-136,-110,-132,-127,-152,-139,-196,-187,-299,-298,-298,-287,-264,-293,-287,-272,-237,-229,-220,-110,-127,-125,-205,-115,-215,-196,-335,-244,-2425,-2106,-4834,-4834,-4666,-4097,-2534,-2429,-2340,-2297,-2036,-1610,-4905,-4630,-4622,-1911,-29963,-29968,-29970,-29972,-29971,-29971,-29970,-29973,-29968,-29969,-29981,-29982,-29982,-29983,-29983,-29984,-29984,-29985,-29985,-29986,-29986,-29986,-29986,-29987,-29987,-29988,-29988,-29989,-29999]} 1. g3 e5 2. c4 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Rb1 d6 6. b4 h5 $146 {A25: English Opening vs King's Indian with ...Nc6 but without early d3} (6... f5 7. b5 Nce7 8. d3 Nf6 9. e3 O-O 10. Nge2 g5 11. f4 exf4 12. exf4 g4 13. O-O h5 14. Re1 h4 15. Be3 {½-½ (32) Aronian,L (2780)-Duda,J (2739) Batumi 2018}) 7. b5 {LiveBook: 3 Games} Nce7 8. h4 Nh6 {The position is equal.} 9. d3 O-O 10. e4 Be6 11. Nge2 c6 12. O-O Qd7 13. Bd2 Kh7 14. bxc6 bxc6 15. Qb3 Rac8 16. Qb7 {And now Qxd7 would win.} Rc7 17. Qa6 f5 18. f4 ({White should try} 18. exf5 $16 gxf5 19. Rb3) 18... Ng4 $11 19. Nd1 (19. Qa3 $11) 19... fxe4 $15 20. dxe4 Qc8 (20... Nc8 {looks sharper.} 21. Ne3 exf4 22. gxf4 Nxe3 23. Bxe3 Nb6) 21. Qxc8 Nxc8 22. fxe5 Rxf1+ 23. Bxf1 Nxe5 24. Ba5 Rf7 25. Nf4 Bxc4 26. Rb8 Nb6 27. Bxb6 (27. Bxc4 $17 {might work better.} Nbxc4 28. Bc3) 27... axb6 $19 28. Rxb6 (28. Bxc4 $142 Nxc4 29. Ne6) 28... Bxf1 ({Don't play} 28... Bxa2 29. Kg2 $17) 29. Kxf1 Bh6 30. Nf2 Bxf4 31. gxf4 Rxf4 {[%mdl 4096] Endgame KRN-KRN} 32. Kg2 Kh6 33. a4 d5 (33... Rxh4 $19 34. a5 Rf4) 34. exd5 cxd5 35. Re6 {[#]} (35. Rb5 $17) 35... Ng4 (35... Nf7 $1 $19 36. a5 Rxh4) 36. Nh3 (36. Nxg4+ $17 Rxg4+ {[%mdl 64] Double Attack} 37. Kh3) 36... Rxa4 37. Re7 (37. Ng5 {is a better defense.}) 37... Ra2+ 38. Kg3 $2 (38. Kg1) 38... Ra3+ 39. Kg2 Ne3+ 40. Kh2 Nf1+ 41. Kg2 Rg3+ 42. Kxf1 Rxh3 {KR-KR} 43. Rd7 Rxh4 44. Rxd5 Rh2 45. Kg1 Ra2 (45... Rb2 $142 46. Rd4 Kg5 47. Rd5+ Kg4 48. Rd4+ Kf5 49. Rd5+ Ke6) 46. Rb5 h4 {[%cal Bh5h4,Bh4h3][%mdl 32] Black mates.} 47. Kh1 g5 {[%cal Bg6g5,Bg5g4,Bg4g3][%mdl 32]} 48. Kg1 Kh5 49. Rb4 h3 50. Rc4 g4 51. Rb4 g3 52. Rb5+ Kg4 53. Rb4+ Kf5 54. Rb5+ Ke4 55. Rb4+ Kd5 56. Rb5+ Kc4 57. Rb1 Rd2 58. Ra1 Kb3 59. Kh1 Kb2 60. Rg1 Rh2# {Accuracy: White = 36%, Black = 70%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Frolov, Artur"]
[Black "Zhang, Ziji"]
[Result "1-0"]
[ECO "C92"]
[WhiteElo "2430"]
[BlackElo "2387"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 34,59,26,25,49,52,57,46,49,79,103,106,131,108,108,108,237,247,239,91,97,0,229,225,264,269,603,581]} 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 h6 13. d5 Nb8 14. b3 c6 15. c4 Nbd7 16. a4 {C95: Closed Ruy Lopez: Breyer Variation with 10 d4} (16. Nf1 Qc7 17. Be3 a5 18. Rc1 Ba6 19. cxb5 Bxb5 20. Bd3 Qb7 21. Bxb5 cxb5 22. Ng3 Rec8 23. Qd3 h5 {½-½ (95) Caruana,F (2807)-Ding,L (2755) Saint Louis 2016}) 16... bxc4 17. bxc4 a5 18. Nb3 {LiveBook: 5 Games. White has an edge.} Qc7 19. Bd2 cxd5 $146 ({Predecessor:} 19... Nc5 20. Re3 Nxb3 21. Bxb3 Be7 22. Nh2 Bd8 23. Rc1 {1-0 (104) Fogarasi,T (2500)-Acs,P (2440) Budapest 1996}) 20. cxd5 Nc5 21. Nxc5 Qxc5 22. Bd3 Ba6 23. Bxa6 Rxa6 24. Rc1 $36 {[%mdl 2048] Keeping Black busy.} Qa3 (24... Qa7 $16) 25. Re3 $1 $18 {[%cal Re3a3]} Qa2 26. Re2 (26. Bc3 $1 $18 {and the rest is easy.}) 26... Qa3 $16 27. Re3 (27. Be1 $16) 27... Qa2 $1 $18 28. Bc3 $1 Rc8 {[#]} 29. Nd2 $1 Qa3 $2 {[#]} (29... Nxd5 30. exd5 Qxd5) 30. Nb1 $1 {Precision: White = 65%, Black = 18%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Neuman, Petr"]
[Black "Csiki, Endre"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2428"]
[BlackElo "2264"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,106,-4,-20,-18,-18,-18,-21,-3,-6,-8,-9,-14,-5,-1,-13,-6,-30,-7,-27,-18,-37,0,0,0,-21,-11,-7,79,89,60,20,37,33,31,23,60,50,84,45,57,39,167,160,164,172,171,102,92,104,108,87,95,89,95,88,107,102,96,0,0,0,13,0,0,-16,63,20,147,-29,-22,-27,-43,-66,-72,-53,-53,-112,-104,-106,-102,-200,-201,-187,0,0,0,-173,-8,-8,-8,-8,-8,-8,-8,-8,182]} 1. g3 g6 2. Bg2 Bg7 3. e4 c5 4. h4 (4. Ne2 Nc6 5. c3 e5 6. O-O Nge7 7. d3 d5 8. a4 O-O 9. Na3 Be6 10. Qc2 Qd7 11. Rd1 Bh3 12. Be3 Bxg2 13. Kxg2 b6 14. d4 cxd4 15. cxd4 dxe4 16. dxe5 {0-1 (71) Caruana,F (2816)-So,W (2778) Leuven 2018}) 4... h5 5. d3 Nc6 6. Nc3 {A00: Irregular Openings} d6 7. Nh3 {LiveBook: 8 Games} Bg4 8. f3 Bd7 9. Be3 Nd4 $146 ({Predecessor:} 9... b5 10. Qd2 b4 11. Nd1 {0-1 (33) Vater,R (2066)-Sobolevsky,L (2303) Jena 2009}) 10. Qd2 e6 11. Nd1 Ne7 12. c3 Ndc6 13. Ndf2 Qa5 14. O-O d5 {[%cal Bd6d5,Bd5d4][%mdl 32]} 15. Qc2 d4 16. Bd2 Qc7 17. f4 e5 18. Ng5 f6 19. Nf3 O-O-O (19... Bg4 $11) 20. fxe5 $16 fxe5 21. Ng5 {Threatens to win with Nf7.} Rhf8 22. c4 Ng8 23. a3 Qd6 24. b4 Kb8 25. Rab1 Nh6 26. bxc5 Qe7 (26... Qc7 $1 $14) 27. Nh7 $18 Rh8 28. Bg5 {[%mdl 64] Skewer} Qxc5 29. Bxd8 (29. Qb2 $18 {[%csl Gb1][%cal Rb2b7]} b6 30. Bxd8 Nxd8 31. Ng5) 29... Nxd8 $16 30. Ng5 Qe7 31. Bh3 Ng4 32. Nxg4 hxg4 33. Bg2 Bh6 {[#]} 34. Qd2 $1 Bc8 35. Qb4 (35. Rb2 $16) 35... Bxg5 $11 36. hxg5 Qxg5 37. Qd6+ Ka8 {Strongly threatening ...Qe3+.} 38. Qf6 Qh6 (38... Qe3+ $1 $11 39. Rf2 Rg8) 39. Rf2 (39. Qxe5 {feels hotter.} Nc6 40. Qf4 g5 41. Qf6 Qh2+ 42. Kf2) 39... Ne6 (39... Qh2+ $11 {remains equal.} 40. Kf1 Nc6) 40. Qh4 $2 ({White has to play} 40. Qxe5 $16 {Black must now prevent Kf1.} Ng5 41. Kf1 (41. Qxd4 Nh3+ 42. Kf1 Nxf2 $16)) 40... Qxh4 41. gxh4 Nf4 42. Bf1 Bd7 $1 43. Rfb2 Bc6 $1 44. Kf2 (44. Rh2 $15) 44... Rxh4 $17 45. Kg3 g5 46. Rh2 (46. Rf2 $17 {was called for.}) 46... Nh5+ $19 47. Kg2 Nf4+ 48. Kg3 Nh5+ 49. Kg2 g3 $2 (49... Kb8 $19 50. Rb2 Bd7) 50. Rxh4 $11 {The position is equal.} gxh4 51. Kh3 Nf4+ 52. Kxh4 g2 {[#]} 53. Bxg2 $1 {[%mdl 512]} Ba4 $2 {Accuracy: White = 37%, Black = 43%.} (53... Nxg2+ $11 {and Black stays safe.} 54. Kg5 Nf4) 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Liu, Guanchu"]
[Black "Liu, Zhaoqi"]
[Result "1-0"]
[ECO "C03"]
[WhiteElo "2425"]
[BlackElo "2300"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,95,0,0,0,0,0,0,10,0,20,7,25,18,18,16,7,4,12,0,30,22,44,15,16,-10,-8,-15,16,20,41,45,127,123,109,118,107,96,137,147,190,192,181,179,175,161,323,143,160,157,170,170,193,167,538,538,554,562,519,552,529,524,497,489,555,451,579,575,552,511,484,498,624,416,945,929,947,1000,1347,1323]} 1. e4 e6 2. d4 d5 3. Nd2 Be7 4. e5 c5 5. c3 cxd4 6. cxd4 {C03: French Tarrasch: Unusual Black 3rd moves} Qb6 7. Ndf3 Bb4+ 8. Bd2 Nc6 9. Bxb4 Qxb4+ 10. Qd2 {LiveBook: 8 Games} Nge7 $146 ({Predecessor:} 10... Qxd2+ 11. Kxd2 Bd7 12. Bd3 Nge7 {1-0 (106) Gharamian,T (2626)-Bellahcene,B (2475) Bastia 2016}) 11. Bd3 Bd7 12. Ne2 Qxd2+ 13. Kxd2 O-O 14. Rac1 Rac8 15. Rc3 Nb4 16. Bb1 Rxc3 17. Nxc3 Nbc6 18. Bd3 a6 19. b3 b5 20. Bb1 f6 21. exf6 gxf6 22. Re1 Nc8 23. Re3 Nd6 24. Ne2 f5 (24... a5 $14) 25. Ne5 $16 Nxe5 26. dxe5 Ne4+ 27. Bxe4 $1 dxe4 {[%mdl 4096] Endgame KRB-KRN} 28. Rc3 Rd8 29. Ke3 Kf7 30. Rc7 Ke7 31. Nf4 a5 $2 (31... Ra8 {was worth a try.} 32. Nh5 Kd8) 32. Kd4 (32. Nh5 $1 $18 {and the rest is easy.}) 32... a4 {[#]} 33. b4 $1 Rb8 34. a3 Kd8 35. Rc3 Ke7 $2 {[#]} (35... h6 {is tougher.} 36. Nh5 Rb7) 36. Rh3 $1 $18 Rb6 37. Rxh7+ Kd8 {intending ...Rc6.} 38. Rh3 Rb7 39. Rc3 Bc8 40. Rc6 Bd7 41. Rc2 Ke7 42. h4 {[%cal Bh2h4,Bh4h5,Bh5h6][%mdl 32]} Be8 43. Ke3 Rd7 44. Rc6 Bf7 45. Ke2 Rd8 (45... Kf8 $142 46. h5 Re7) 46. Rc7+ {White is clearly winning.} Kf8 47. h5 Rd4 48. h6 {Accuracy: White = 70%, Black = 33%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Kacharava, Nikolozi"]
[Black "Postny, Evgeny"]
[Result "0-1"]
[ECO "B18"]
[WhiteElo "2397"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "140"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,140,49,49,44,42,49,35,48,52,50,22,49,36,47,14,22,0,0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,-7,-3,0,0,0,0,0,0,0,0,-17,-11,-48,-24,-42,-35,-36,-37,-39,-35,-115,-108,-112,-106,-105,-106,-180,-183,-252,-173,-173,-172,-247,-244,-255,-248,-229,-239,-248,-255,-244,-252,-247,-241,-252,-263,-257,0,-259,-257,-437,-427,-472,-312,-381,-367,-374,-236,-236,-236,-545,-523,-1074,-1074,-1141,-1121,-1100,-1011,-29962,-29963,-29965,-29968,-29968,-29968,-29968,-29968,-29965,-29962,-29967,-29963,-6396,-6271,-29980,-29981,-29981,-29982,-29982,-29983]} 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Nc5 Nd7 (5... e5 6. Nxb7 Qb6 7. Nc5 Bxc5 8. dxc5 Qxc5 9. c3 Nf6 10. Be3 Qe7 11. Ne2 O-O 12. Ng3 Rd8 13. Qc1 Bg6 {½-½ (54) Ivanchuk,V (2738)-Navara,D (2737) Prague 2017}) 6. Bd3 {B18: Classical Caro-Kann: 4...Bf5 sidelines} Nxc5 7. Bxf5 e6 8. Bh3 {LiveBook: 3 Games. White is slightly better.} Nd7 9. Nf3 Ngf6 10. O-O Bd6 11. g3 O-O 12. Qe2 Qc7 13. c4 $146 ({Predecessor:} 13. Re1) 13... Rfe8 14. Rd1 e5 15. dxe5 Nxe5 16. Nxe5 Bxe5 17. Be3 c5 18. Qc2 Rad8 19. Rxd8 Rxd8 20. Re1 Qa5 21. Re2 Bd4 22. b3 Bxe3 23. Rxe3 Qc7 24. Bg2 b6 25. Bf3 g6 26. Kg2 Rd4 27. Qc3 Qd6 28. Re2 a5 29. Qe3 a4 30. Qh6 Qf8 31. Qxf8+ Kxf8 $11 {[%mdl 4096] Endgame KRB-KRN} 32. Bc6 a3 33. h3 g5 34. Kf3 Rd3+ 35. Re3 Rd6 36. Bb7 Rd1 37. b4 ({White should play} 37. Re2 $15) 37... cxb4 $17 38. Rb3 Rd2 39. Rxb4 Rb2 40. Rb5 (40. Ra4 $17 {was called for.} Rxa2 41. Ke3) 40... Nd7 $19 ({Don't play} 40... Rxa2 41. Rxb6 Ke7 42. Ra6 $15) 41. Bc6 (41. Rxb2 $142 axb2 42. Be4) 41... Nc5 42. Be4 Rxa2 43. Rxb6 (43. Bxh7 $142 Rd2 44. Bb1) 43... Rd2 44. Rb8+ Ke7 45. Ra8 a2 46. Ke3 Rd1 47. Rxa2 Re1+ 48. Kd4 Nxe4 {KRN-KR} 49. Ra7+ Ke6 50. Ra6+ Ke7 51. Ra7+ $1 Kf6 52. c5 $2 (52. Ra3) 52... Nxf2 53. c6 {White hopes to continue with c7.} Re4+ 54. Kd5 Re5+ $1 55. Kd4 Re8 56. c7 Nxh3 {Hoping for ...g4.} 57. Rb7 $2 {[#]} (57. Kd5 {is a better chance.} Nf2 58. Ra4) 57... Rc8 $1 58. Kd5 Kf5 59. Kd6 Kg4 60. Rb3 Nf2 61. Kd7 {[#]} Rxc7+ $1 62. Kxc7 {KR-KN} Ne4 63. Rb4 f5 64. Kd7 Kxg3 65. Ke6 Kg4 66. Ke5 h5 {[%cal Bh7h5,Bh5h4,Bh4h3,Bh3h2][%mdl 32]} 67. Rb8 h4 68. Rh8 h3 {Black mates.} 69. Kd4 Ng3 70. Ke3 {[#]} h2 $1 {Accuracy: White = 52%, Black = 88%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Krivonosov, Oleg"]
[Black "Abdulla, Murad"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2390"]
[BlackElo "2263"]
[Annotator "NA"]
[PlyCount "101"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:49]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:00:10]} 3. Nc3 {[%emt 0:00:00]} d6 {[%emt 0:00:10]} 4. d4 {[%emt 0:00:00]} Bf5 {[%emt 0:00:07]} 5. d5 {[%emt 0:01:33]} Bg7 {[%emt 0:00:07]} 6. Nd4 {[%emt 0:00:05]} Bd7 {[%emt 0:00:08]} 7. e4 {[%emt 0:00:18]} O-O {[%emt 0:00:24]} 8. Be2 {[%emt 0:00:27]} e5 {[%emt 0:00:26]} 9. dxe6 {[%emt 0:01:00]} fxe6 {[%emt 0:00:20]} 10. O-O {[%emt 0:00:40]} e5 {[%emt 0:01:04]} 11. Nc2 {[%emt 0:00:54]} a5 {[%emt 0:03:03]} 12. Be3 {[%emt 0:01:44]} Na6 {[%emt 0:02:52]} 13. Qd2 {[%emt 0:04:30]} Kh8 {[%emt 0:08:55]} 14. Rad1 {[%emt 0:04:00]} Qe8 {[%emt 0:10:24]} 15. f3 {[%emt 0:02:09]} b6 {[%emt 0:07:08]} 16. Nd5 {[%emt 0:01:07]} Rf7 {[%emt 0:09:21]} 17. b3 {[%emt 0:02:55]} Nxd5 {[%emt 0:03:24]} 18. cxd5 {[%emt 0:01:03]} Nc5 {[%emt 0:01:34]} 19. Na3 {[%emt 0:04:11]} Bf6 {[%emt 0:05:36]} 20. Bc4 {[%emt 0:03:54]} Rf8 {[%emt 0:05:46]} 21. Rc1 {[%emt 0:03:01]} Qe7 {[%emt 0:08:06]} 22. Bb5 {[%emt 0:01:45]} Bc8 {[%emt 0:01:09]} 23. Nb1 {[%emt 0:03:37]} g5 {[%emt 0:01:39]} 24. g4 {[%emt 0:00:30]} h5 {[%emt 0:04:11]} 25. h3 {[%emt 0:00:11]} Kg7 {[%emt 0:02:00]} 26. Nc3 {[%emt 0:00:36]} Rh8 {[%emt 0:03:05]} 27. Kg2 {[%emt 0:00:31]} Kg6 {[%emt 0:02:10]} 28. Rh1 {[%emt 0:00:59]} Rh7 {[%emt 0:03:15]} 29. Ne2 {[%emt 0:01:01]} Bb7 {[%emt 0:04:44]} 30. Ng3 {[%emt 0:01:39]} h4 {[%emt 0:03:33]} 31. Nf5 {[%emt 0:00:31]} Qf8 {[%emt 0:00:44]} 32. Rc3 {[%emt 0:01:28]} Ra7 {[%emt 0:01:48]} 33. Rhc1 {[%emt 0:00:29]} Qa8 {[%emt 0:01:20]} 34. R1c2 {[%emt 0:01:15]} Qd8 {[%emt 0:02:44]} 35. Qe2 {[%emt 0:01:39]} Ba6 {[%emt 0:02:40]} 36. Bxa6 {[%emt 0:00:53]} Nxa6 {[%emt 0:00:09]} 37. a3 {[%emt 0:07:21]} Qd7 {[%emt 0:00:51]} 38. Bf2 {[%emt 0:00:41]} Rh8 {[%emt 0:00:26]} 39. Qe3 {[%emt 0:02:01]} Re8 {[%emt 0:00:57]} 40. Bxh4 {[%emt 0:02:31]} Rh8 {[%emt 0:00:42]} 41. Bg3 {[%emt 0:30:11]} Qh7 {[%emt 0:30:38]} 42. Kg1 {[%emt 0:00:15]} Nc5 {[%emt 0:00:00]} 43. Rh2 {[%emt 0:00:00]} Qd7 {[%emt 0:00:00]} 44. h4 {[%emt 0:00:00]} Raa8 {[%emt 0:00:00]} 45. h5+ {[%emt 0:00:00]} Kh7 {[%emt 0:00:00]} 46. Rhc2 {[%emt 0:00:00]} Qb5 {[%emt 0:00:00]} 47. Qe2 {[%emt 0:00:00]} Qxe2 {[%emt 0:00:00]} 48. Rxe2 {[%emt 0:00:00]} Rhb8 {[%emt 0:00:00]} 49. b4 {[%emt 0:00:00]} axb4 {[%emt 0:00:00]} 50. axb4 {[%emt 0:00:00]} Ra1+ {[%emt 0:00:00]} 51. Re1 {[%emt 0:00:00]} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Low, Zhen Yu Cyrus"]
[Black "Gomes, Mary Ann"]
[Result "0-1"]
[ECO "B91"]
[WhiteElo "2385"]
[BlackElo "2296"]
[Annotator "NA"]
[PlyCount "114"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:05]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:06]} 5. Nc3 {[%emt 0:00:00]} a6 {[%emt 0:00:05]} 6. g3 {[%emt 0:00:04]} e5 {[%emt 0:00:06]} 7. Nde2 {[%emt 0:00:05]} Be7 {[%emt 0:00:14]} 8. Bg2 {[%emt 0:00:16]} Be6 {[%emt 0:00:12]} 9. a4 {[%emt 0:01:44]} Nc6 {[%emt 0:00:06]} 10. Nd5 {[%emt 0:00:55]} Rc8 {[%emt 0:02:33]} 11. O-O {[%emt 0:06:06]} O-O {[%emt 0:01:15]} 12. b3 {[%emt 0:06:00]} Bxd5 {[%emt 0:08:59]} 13. exd5 {[%emt 0:00:17]} Nb8 {[%emt 0:00:06]} 14. a5 {[%emt 0:09:43]} Nfd7 {[%emt 0:01:57]} 15. c4 {[%emt 0:08:24]} f5 {[%emt 0:07:01]} 16. f4 {[%emt 0:07:19]} Bf6 {[%emt 0:00:35]} 17. fxe5 {[%emt 0:00:29]} Bxe5 {[%emt 0:00:22]} 18. Ra2 {[%emt 0:00:27]} b5 {[%emt 0:02:03]} 19. cxb5 {[%emt 0:08:41]} axb5 {[%emt 0:00:18]} 20. Qd3 {[%emt 0:00:35]} Nc5 {[%emt 0:06:10]} 21. Qxb5 {[%emt 0:00:34]} Nba6 {[%emt 0:00:18]} 22. Qc4 {[%emt 0:02:04]} Rb8 {[%emt 0:00:44]} 23. Ra3 {[%emt 0:05:45]} Rb4 {[%emt 0:07:03]} 24. Qc2 {[%emt 0:00:08]} Qb8 {[%emt 0:00:20]} 25. Rf3 {[%emt 0:06:31]} Ne4 {[%emt 0:02:37]} 26. Be3 {[%emt 0:03:35]} g6 {[%emt 0:02:19]} 27. Bf1 {[%emt 0:11:55]} Rc8 {[%emt 0:01:08]} 28. Qd1 {[%emt 0:02:56]} Bb2 {[%emt 0:01:46]} 29. Ra2 {[%emt 0:00:01]} Rxb3 {[%emt 0:01:07]} 30. Nd4 {[%emt 0:00:55]} Rxe3 {[%emt 0:04:04]} 31. Rxe3 {[%emt 0:05:18]} Rc1 {[%emt 0:03:49]} 32. Qd3 {[%emt 0:01:44]} Bxd4 {[%emt 0:01:44]} 33. Qxd4 {[%emt 0:00:03]} Rxf1+ {[%emt 0:06:49]} 34. Kxf1 {[%emt 0:02:17]} Qb1+ {[%emt 0:00:06]} 35. Re1 {[%emt 0:00:05]} Qxa2 {[%emt 0:00:11]} 36. Qb6 {[%emt 0:03:34]} Nd2+ {[%emt 0:11:31]} 37. Kg1 {[%emt 0:00:08]} Nf3+ {[%emt 0:00:05]} 38. Kf1 {[%emt 0:00:08]} Nxh2+ {[%emt 0:00:08]} 39. Kg1 {[%emt 0:00:01]} Nf3+ {[%emt 0:00:16]} 40. Kf1 {[%emt 0:00:01]} Qc4+ {[%emt 0:01:00]} 41. Re2 {[%emt 0:30:39]} Nc5 {[%emt 0:39:47]} 42. Kf2 {[%emt 0:10:22]} Ne5 {[%emt 0:07:11]} 43. a6 {[%emt 0:00:00]} Ng4+ {[%emt 0:00:00]} 44. Kf1 {[%emt 0:00:00]} Ne3+ {[%emt 0:00:00]} 45. Kf2 {[%emt 0:00:00]} Ne4+ {[%emt 0:00:00]} 46. Kf3 {[%emt 0:00:00]} Nxd5 {[%emt 0:00:00]} 47. Qb8+ {[%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 48. Qb7+ {[%emt 0:00:00]} Nc7 {[%emt 0:00:00]} 49. Rb2 {[%emt 0:00:00]} Qf1+ {[%emt 0:02:42]} 50. Ke3 {[%emt 0:00:00]} Qg1+ {[%emt 0:00:54]} 51. Ke2 {[%emt 0:00:00]} Qf2+ {[%emt 0:00:20]} 52. Kd1 {[%emt 0:00:00]} Qf1+ {[%emt 0:00:09]} 53. Kc2 {[%emt 0:00:00]} Qe2+ {[%emt 0:00:10]} 54. Kc1 {[%emt 0:00:00]} Qe1+ {[%emt 0:00:07]} 55. Kc2 {[%emt 0:00:00]} Qd2+ {[%emt 0:00:15]} 56. Kb3 {[%emt 0:00:00]} Nc5+ {[%emt 0:00:12]} 57. Ka2 {[%emt 0:00:00]} Qa5+ {[%emt 0:00:09]} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Gschnitzer, Oswald"]
[Black "Mis, Mieszko"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2370"]
[BlackElo "2242"]
[Annotator "NA"]
[PlyCount "76"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:33]} Bg7 {[%emt 0:00:01]} 3. e4 {[%emt 0:00:37]} e5 {[%emt 0:00:25]} 4. d4 {[%emt 0:00:33]} exd4 {[%emt 0:00:08]} 5. Nxd4 {[%emt 0:00:04]} Nf6 {[%emt 0:00:16]} 6. Nc3 {[%emt 0:03:36]} O-O {[%emt 0:00:46]} 7. Be3 {[%emt 0:15:02]} c6 {[%emt 0:00:19]} 8. Be2 {[%emt 0:05:07]} Re8 {[%emt 0:06:10]} 9. Bf3 {[%emt 0:13:36]} d6 {[%emt 0:07:26]} 10. Nb3 {[%emt 0:05:56]} a5 {[%emt 0:07:55]} 11. Rc1 {[%emt 0:12:04]} Na6 {[%emt 0:15:34]} 12. O-O {[%emt 0:01:08]} a4 {[%emt 0:01:56]} 13. Nxa4 {[%emt 0:03:35]} Nxe4 {[%emt 0:03:30]} 14. Nb6 {[%emt 0:00:29]} Rb8 {[%emt 0:01:01]} 15. Nxc8 {[%emt 0:01:29]} Rxc8 {[%emt 0:01:54]} 16. Bd4 {[%emt 0:08:04]} Nac5 {[%emt 0:11:56]} 17. Re1 {[%emt 0:04:35]} Bxd4 {[%emt 0:07:48]} 18. Nxd4 {[%emt 0:03:26]} Qb6 {[%emt 0:01:16]} 19. Rc2 {[%emt 0:02:12]} Nf6 {[%emt 0:03:02]} 20. Rce2 {[%emt 0:01:01]} Rxe2 {[%emt 0:00:41]} 21. Rxe2 {[%emt 0:00:09]} Re8 {[%emt 0:05:15]} 22. Rxe8+ {[%emt 0:00:21]} Nxe8 {[%emt 0:00:13]} 23. Qd2 {[%emt 0:04:13]} Nf6 {[%emt 0:00:50]} 24. h4 {[%emt 0:02:42]} Nce4 {[%emt 0:03:50]} 25. Qe3 {[%emt 0:00:30]} d5 {[%emt 0:00:44]} 26. cxd5 {[%emt 0:00:08]} cxd5 {[%emt 0:00:07]} 27. b3 {[%emt 0:00:38]} Qc5 {[%emt 0:02:10]} 28. a4 {[%emt 0:01:07]} h5 {[%emt 0:00:43]} 29. g3 {[%emt 0:01:08]} Qa3 {[%emt 0:01:44]} 30. Kg2 {[%emt 0:01:32]} Qb2 {[%emt 0:00:27]} 31. Be2 {[%emt 0:02:24]} Ng4 {[%emt 0:02:45]} 32. Bxg4 {[%emt 0:00:34]} hxg4 {[%emt 0:00:02]} 33. Ne2 {[%emt 0:05:04]} Nd2 {[%emt 0:05:51]} 34. Nd4 {[%emt 0:00:39]} Qc1 {[%emt 0:01:11]} 35. h5 {[%emt 0:01:47]} Qf1+ {[%emt 0:05:39]} 36. Kh2 {[%emt 0:00:01]} Qh3+ {[%emt 0:00:43]} 37. Kg1 {[%emt 0:00:02]} Qf1+ {[%emt 0:00:26]} 38. Kh2 {[%emt 0:00:01]} Qh3+ {[%emt 0:00:27]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Lin, Yi"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "A62"]
[WhiteElo "2359"]
[BlackElo "2236"]
[Annotator "NA"]
[PlyCount "72"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 4. d5 {[%emt 0:00:43]} exd5 {[%emt 0:00:00]} 5. cxd5 {[%emt 0:00:06]} d6 {[%emt 0:00:00]} 6. Nc3 {[%emt 0:00:07]} g6 {[%emt 0:00:04]} 7. Bg2 {[%emt 0:00:04]} Bg7 {[%emt 0:00:06]} 8. Nf3 {[%emt 0:00:08]} O-O {[%emt 0:00:10]} 9. O-O {[%emt 0:00:06]} a6 {[%emt 0:00:02]} 10. a4 {[%emt 0:00:06]} Re8 {[%emt 0:00:04]} 11. Re1 {[%emt 0:04:29]} Nbd7 {[%emt 0:07:38]} 12. Bf4 {[%emt 0:08:44]} Qc7 {[%emt 0:06:58]} 13. Rc1 {[%emt 0:06:44]} Qb8 {[%emt 0:00:38]} 14. Qb3 {[%emt 0:03:22]} Ng4 {[%emt 0:10:16]} 15. a5 {[%emt 0:11:26]} b5 {[%emt 0:11:24]} 16. axb6 {[%emt 0:00:08]} Nxb6 {[%emt 0:00:21]} 17. h3 {[%emt 0:06:20]} Nf6 {[%emt 0:01:08]} 18. e4 {[%emt 0:03:42]} Nfd7 {[%emt 0:00:24]} 19. Rc2 {[%emt 0:16:56]} h6 {[%emt 0:08:20]} 20. Nd1 {[%emt 0:06:45]} a5 {[%emt 0:02:46]} 21. Bd2 {[%emt 0:09:27]} a4 {[%emt 0:02:03]} 22. Qa2 {[%emt 0:05:52]} Ba6 {[%emt 0:00:37]} 23. Bc3 {[%emt 0:00:41]} Nf6 {[%emt 0:04:24]} 24. Bxf6 {[%emt 0:09:07]} Bxf6 {[%emt 0:00:08]} 25. Bf1 {[%emt 0:00:32]} Bxf1 {[%emt 0:04:50]} 26. Kxf1 {[%emt 0:00:03]} Nd7 {[%emt 0:02:17]} 27. Re3 {[%emt 0:03:29]} Bd4 {[%emt 0:15:10]} 28. Nxd4 {[%emt 0:00:10]} cxd4 {[%emt 0:00:01]} 29. Re1 {[%emt 0:00:13]} Ne5 {[%emt 0:02:20]} 30. Kg2 {[%emt 0:00:18]} Nd3 {[%emt 0:00:17]} 31. Rf1 {[%emt 0:02:43]} Nb4 {[%emt 0:00:12]} 32. Qc4 {[%emt 0:00:03]} Nxc2 {[%emt 0:00:16]} 33. Qxc2 {[%emt 0:00:03]} Qb3 {[%emt 0:00:33]} 34. Qd2 {[%emt 0:01:03]} Rxe4 {[%emt 0:00:26]} 35. f3 {[%emt 0:01:39]} Re5 {[%emt 0:03:58]} 36. Nf2 {[%emt 0:00:18]} Rc8 {[%emt 0:00:20]} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Vojta, Tomas"]
[Black "Wang, Yiye"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2351"]
[BlackElo "2443"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,90,33,28,24,26,29,34,27,39,20,17,23,34,27,60,43,47,52,40,55,45,47,80,40,57,50,37,36,25,41,37,37,35,14,19,10,34,24,31,22,27,25,25,25,25,25,26,15,15,13,29,18,30,29,29,0,0,0,13,8,8,8,8,0,8,0,0,0,2,0,0,0,0,0,0]} 1. d4 Nf6 2. c3 g6 3. Nf3 Bg7 4. Bg5 O-O 5. Nbd2 d6 6. e4 Nc6 7. Bb5 Bd7 8. O-O {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} h6 (8... a6 9. Ba4 h6 10. Bh4 g5 11. Bg3 Nh5 12. Re1 Nxg3 13. hxg3 e6 14. Nf1 Ne7 15. Bb3 c5 16. dxc5 dxc5 {½-½ (48) Kamsky,G (2702)-Shabalov,A (2587) Philadelphia 2010}) 9. Bh4 a6 {LiveBook: 6 Games} 10. Be2 {White has an edge.} e5 11. dxe5 dxe5 12. Qc2 Qc8 13. Rfe1 Nh5 14. a4 Nf4 15. Bf1 f5 $146 ({Predecessor:} 15... Kh7 16. Nc4 {0-1 (49) Stranjakovitch,J (2255)-Nguyen,A (2340) Budapest 1994}) 16. exf5 gxf5 17. Bg3 Ng6 $1 18. Nh4 Nxh4 19. Bxh4 Be6 20. f3 Qe8 21. Nb3 b6 22. Nd2 Qh5 23. Bg3 Qf7 24. b4 Rfd8 25. b5 axb5 26. Bxb5 Bd5 27. Bxc6 Bxc6 28. Bxe5 Re8 29. Bxg7 Kxg7 30. Rxe8 Qxe8 31. Nf1 Qe5 32. Ng3 Kg6 33. Qd2 Rxa4 34. Re1 Qc5+ 35. Kh1 {Qd8 is the strong threat.} Qd6 36. Qc2 Ra5 $1 {The position is equal.} 37. Ne2 (37. Qb3 {keeps more tension.} Bd5 38. Qb1 Qf4 39. Qd3 Bf7 40. Ne2) 37... Kg7 38. Nd4 $40 {[%mdl 128] White attacks.} Bd7 39. Qe2 Rd5 40. h3 b5 41. Qb2 Kf7 42. Qb3 Kf8 43. Qa2 c5 44. Qa8+ Kf7 45. Qh8 {With the idea Qh7+.} cxd4 {Accuracy: White = 71%, Black = 60%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Szpar, Milosz"]
[Black "Sindler, Michal"]
[Result "1/2-1/2"]
[ECO "B96"]
[WhiteElo "2339"]
[BlackElo "2221"]
[Annotator "NA"]
[PlyCount "55"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:02]} 5. Nc3 {[%emt 0:00:04]} a6 {[%emt 0:03:19]} 6. Bg5 {[%emt 0:00:31]} e6 {[%emt 0:01:49]} 7. f4 {[%emt 0:00:47]} h6 {[%emt 0:02:43]} 8. Bh4 {[%emt 0:00:13]} Be7 {[%emt 0:10:24]} 9. Qf3 {[%emt 0:02:03]} Nbd7 {[%emt 0:01:13]} 10. O-O-O {[%emt 0:02:15]} Qc7 {[%emt 0:03:13]} 11. f5 {[%emt 0:18:49]} Ne5 {[%emt 0:08:31]} 12. Qh3 {[%emt 0:01:52]} Nc6 {[%emt 0:07:32]} 13. g4 {[%emt 0:06:55]} Nxd4 {[%emt 0:08:19]} 14. Rxd4 {[%emt 0:00:13]} Bd7 {[%emt 0:03:51]} 15. Be2 {[%emt 0:05:26]} b5 {[%emt 0:07:17]} 16. Rhd1 {[%emt 0:02:36]} e5 {[%emt 0:17:22]} 17. Bxf6 {[%emt 0:02:11]} Bxf6 {[%emt 0:01:06]} 18. Rxd6 {[%emt 0:01:50]} Bc6 {[%emt 0:00:57]} 19. R6d3 {[%emt 0:03:18]} Rc8 {[%emt 0:02:17]} 20. a3 {[%emt 0:12:15]} a5 {[%emt 0:00:57]} 21. Na2 {[%emt 0:01:52]} O-O {[%emt 0:01:37]} 22. Rc3 {[%emt 0:04:33]} Qb7 {[%emt 0:00:33]} 23. Bd3 {[%emt 0:02:31]} b4 {[%emt 0:02:40]} 24. axb4 {[%emt 0:01:52]} axb4 {[%emt 0:00:19]} 25. Rb3 {[%emt 0:00:40]} Be7 {[%emt 0:03:51]} 26. f6 {[%emt 0:03:10]} Bxf6 {[%emt 0:00:36]} 27. Nxb4 {[%emt 0:00:15]} Bxe4 {[%emt 0:00:58]} 28. Re1 {[%emt 0:11:04]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Cerveny, Petr"]
[Black "Xiang, Zeyu"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2318"]
[BlackElo "2440"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 33,104,19,10,8,7,2,29,0,0,0,0,0,0,0,44,34,34,40,42,34,74,75,99,108,107,104,101,106,193,189,252,245,233,-64,-64,-64,-66,-83,-85,-183,-176,-204,-204,-204,-204,-204,-204,-204,-188,-204,-204,-204,-182,-232,-232,-232,-232,-225,-225,-224,-176,-239,-225,-368,-359,-772,-733,-839,-839,-672,-657,-839,-815]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 O-O 7. h3 h6 8. Re1 a6 9. Bb3 Ba7 10. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3,Be3g4][%mdl 32]} Nh5 11. Nf1 Qf6 12. Ne3 Nf4 13. Ng4 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Qg6 (13... Bxg4 14. hxg4 Ne7 15. d4 Neg6 16. g3 Ne6 17. Be3 exd4 18. cxd4 c5 19. e5 dxe5 20. dxe5 Nxe5 21. Nxe5 Qxe5 22. Bxe6 fxe6 {½-½ (29) Anton Guijarro,D (2666)-Kovalev,V (2639) Riadh 2017}) 14. Bxf4 exf4 15. d4 Bxg4 16. hxg4 Qxg4 17. Qd3 Ne7 {LiveBook: 3 Games} 18. Bc2 {And now e5 would win.} g6 19. b4 $146 ({Predecessor:} 19. e5 d5 20. Nh2 Qh5 {1-0 (96) Glatthaar,M (2389)-Mercader Martinez,J (2377) ICCF email 2016}) 19... Kg7 20. Re2 c6 21. a4 Rfe8 22. Rae1 Rad8 23. c4 Qd7 24. Qc3 d5 25. exd5 cxd5 26. c5 Bb8 27. b5 axb5 28. axb5 Kf8 29. Ba4 b6 30. Ne5 Bxe5 (30... Qc8 $16 31. Bb3 Kg7) 31. Rxe5 $18 Nc8 (31... Kg7 $142 32. Bb3 (32. cxb6 Rc8 $16) 32... Rc8) 32. cxb6 ({But not} 32. c6 $6 Qc7 $18) 32... Rxe5 33. Rxe5 $2 (33. dxe5 $18 {Threatens to win with e6!} d4 34. Qc7) 33... Nxb6 $15 34. Qc5+ Qd6 35. Bb3 Kg7 36. Re7 (36. Qxd6 $17 {was called for.} Rxd6 37. Re7) 36... Qf6 $1 $19 37. Qc7 Rc8 38. Qe5 Rc1+ 39. Kh2 Rb1 40. Rb7 Qxe5 41. dxe5 {Black must now prevent e6.} Rxb3 42. Rxb6 {[%mdl 4096] Endgame KR-KR} d4 {[%cal Bd5d4,Bd4d3][%mdl 32]} 43. Rb7 {[#] intending e6.} Kf8 $1 44. Rd7 {[#]} d3 $1 (44... Rxb5 45. Rxd4 g5 46. Rd6) 45. b6 Ke8 ({Don't take} 45... Rxb6 46. Rxd3 Ke7 47. g4 $17) 46. Rd4 Ke7 47. g3 (47. Rxf4 $142 Ke6 48. Rd4) 47... fxg3+ ({Don't do} 47... Rxb6 48. gxf4 Rb3 49. Rd6 $17) 48. Kxg3 (48. fxg3 $142 Ke6 49. b7) 48... Ke6 49. f4 $2 (49. Kf4 Rxb6 50. Rxd3) 49... Kf5 {Black is clearly winning.} 50. Rd7 d2+ 51. Kf2 Kxf4 52. Ke2 Rxb6 {Accuracy: White = 47%, Black = 73%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Mishuchkov, Nikolai M."]
[Black "Chernyak, Viktoria"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2308"]
[BlackElo "2186"]
[Annotator "NA"]
[PlyCount "41"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:07]} 4. e3 {[%emt 0:00:00]} Be7 {[%emt 0:00:46]} 5. Bd3 {[%emt 0:00:08]} O-O {[%emt 0:00:54]} 6. b3 {[%emt 0:00:11]} dxc4 {[%emt 0:02:30]} 7. bxc4 {[%emt 0:01:28]} c5 {[%emt 0:00:03]} 8. O-O {[%emt 0:00:12]} Nc6 {[%emt 0:01:58]} 9. Bb2 {[%emt 0:03:14]} b6 {[%emt 0:02:25]} 10. Nc3 {[%emt 0:13:20]} cxd4 {[%emt 0:03:28]} 11. exd4 {[%emt 0:00:22]} Bb7 {[%emt 0:04:19]} 12. a3 {[%emt 0:05:01]} Rc8 {[%emt 0:04:00]} 13. Qe2 {[%emt 0:02:19]} Na5 {[%emt 0:16:50]} 14. Ne5 {[%emt 0:37:19]} Qc7 {[%emt 0:10:30]} 15. Nb5 {[%emt 0:02:32]} Qb8 {[%emt 0:00:22]} 16. d5 {[%emt 0:05:19]} exd5 {[%emt 0:07:45]} 17. cxd5 {[%emt 0:04:00]} Rfe8 {[%emt 0:06:38]} 18. Rad1 {[%emt 0:01:13]} Rcd8 {[%emt 0:06:44]} 19. Ng4 {[%emt 0:09:17]} Nxg4 {[%emt 0:02:19]} 20. Qxg4 {[%emt 0:00:07]} Bf8 {[%emt 0:00:28]} 21. Qf5 {[%emt 0:01:04]} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Kulhanek, Tomas"]
[Black "Vokac, Marek"]
[Result "1/2-1/2"]
[ECO "B52"]
[WhiteElo "2303"]
[BlackElo "2380"]
[Annotator "NA"]
[PlyCount "18"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:02:42]} c5 {[%emt 0:00:09]} 2. Nf3 {[%emt 0:00:20]} d6 {[%emt 0:00:03]} 3. Bb5+ {[%emt 0:00:10]} Bd7 {[%emt 0:00:06]} 4. Bxd7+ {[%emt 0:00:06]} Qxd7 {[%emt 0:00:07]} 5. O-O {[%emt 0:00:36]} Nc6 {[%emt 0:00:18]} 6. c3 {[%emt 0:00:56]} Nf6 {[%emt 0:00:09]} 7. Re1 {[%emt 0:01:41]} e6 {[%emt 0:00:19]} 8. d4 {[%emt 0:00:19]} cxd4 {[%emt 0:00:03]} 9. cxd4 {[%emt 0:00:09]} d5 {[%emt 0:00:06]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Kulkarni Bhakti"]
[Black "Hesse, Henrik"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2303"]
[BlackElo "2166"]
[Annotator "NA"]
[PlyCount "115"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:15]} e5 {[%emt 0:03:36]} 2. d4 {[%emt 0:00:09]} exd4 {[%emt 0:01:28]} 3. Nf3 {[%emt 0:00:09]} Nc6 {[%emt 0:05:13]} 4. Nxd4 {[%emt 0:00:12]} Nf6 {[%emt 0:03:11]} 5. Nxc6 {[%emt 0:01:49]} bxc6 {[%emt 0:02:55]} 6. e5 {[%emt 0:00:07]} Qe7 {[%emt 0:02:18]} 7. Qe2 {[%emt 0:00:07]} Nd5 {[%emt 0:00:15]} 8. c4 {[%emt 0:00:10]} Nb6 {[%emt 0:00:19]} 9. g3 {[%emt 0:01:37]} Ba6 {[%emt 0:02:14]} 10. b3 {[%emt 0:00:35]} g6 {[%emt 0:02:54]} 11. Bg2 {[%emt 0:00:43]} Bg7 {[%emt 0:00:30]} 12. Bb2 {[%emt 0:01:15]} O-O {[%emt 0:03:12]} 13. O-O {[%emt 0:02:06]} f6 {[%emt 0:12:00]} 14. Ba3 {[%emt 0:05:05]} d6 {[%emt 0:22:31]} 15. Bxc6 {[%emt 0:01:31]} Rab8 {[%emt 0:00:40]} 16. Nc3 {[%emt 0:04:42]} fxe5 {[%emt 0:04:38]} 17. Qe3 {[%emt 0:02:08]} Kh8 {[%emt 0:06:47]} 18. Rfd1 {[%emt 0:06:56]} e4 {[%emt 0:05:25]} 19. Nxe4 {[%emt 0:06:30]} Bxc4 {[%emt 0:10:41]} 20. bxc4 {[%emt 0:03:39]} Nxc4 {[%emt 0:00:01]} 21. Qxa7 {[%emt 0:01:47]} Rb6 {[%emt 0:03:16]} 22. Bd5 {[%emt 0:01:41]} Nxa3 {[%emt 0:04:42]} 23. Qxa3 {[%emt 0:00:35]} Bxa1 {[%emt 0:00:23]} 24. Rxa1 {[%emt 0:00:05]} Qe5 {[%emt 0:01:02]} 25. Qc3 {[%emt 0:04:20]} Qxc3 {[%emt 0:00:43]} 26. Nxc3 {[%emt 0:00:02]} c6 {[%emt 0:00:23]} 27. Bb3 {[%emt 0:01:28]} Rf3 {[%emt 0:01:02]} 28. Ne2 {[%emt 0:00:43]} d5 {[%emt 0:00:33]} 29. Rd1 {[%emt 0:00:41]} Rf8 {[%emt 0:00:49]} 30. f4 {[%emt 0:00:48]} Re8 {[%emt 0:00:09]} 31. Kf2 {[%emt 0:00:05]} Re4 {[%emt 0:01:02]} 32. Rd3 {[%emt 0:00:57]} Kg7 {[%emt 0:00:30]} 33. Re3 {[%emt 0:00:50]} Rbb4 {[%emt 0:00:37]} 34. Rc3 {[%emt 0:01:38]} Rb6 35. Nc1 {[%emt 0:00:31]} Kf6 {[%emt 0:00:38]} 36. Nd3 {[%emt 0:00:07]} Re7 {[%emt 0:00:21]} 37. Ne5 {[%emt 0:01:02]} g5 {[%emt 0:00:49]} 38. Nxc6 {[%emt 0:00:18]} Rc7 39. Nb4 {[%emt 0:01:11]} Rxc3 {[%emt 0:01:02]} 40. Nxd5+ {[%emt 0:00:03]} Kf5 {[%emt 0:00:03]} 41. Nxc3 {[%emt 0:30:18]} gxf4 {[%emt 0:01:51]} 42. gxf4 {[%emt 0:00:00]} Rc6 {[%emt 0:06:18]} 43. Nd5 {[%emt 0:00:00]} Rh6 {[%emt 0:00:29]} 44. Kg3 {[%emt 0:00:00]} Ke4 {[%emt 0:00:27]} 45. Ne7 {[%emt 0:00:00]} Ra6 {[%emt 0:03:22]} 46. f5 {[%emt 0:00:00]} Ke5 {[%emt 0:00:35]} 47. Kg4 {[%emt 0:00:00]} Rd6 {[%emt 0:01:31]} 48. Nd5 {[%emt 0:00:00]} Rd8 {[%emt 0:01:49]} 49. f6 {[%emt 0:00:00]} Rg8+ {[%emt 0:00:24]} 50. Kh5 {[%emt 0:00:00]} Rg2 {[%emt 0:01:51]} 51. h4 {[%emt 0:00:00]} Rf2 {[%emt 0:00:46]} 52. Ne3 {[%emt 0:00:00]} Ke4 {[%emt 0:02:46]} 53. Ng4 {[%emt 0:00:00]} Rf5+ {[%emt 0:00:30]} 54. Kh6 {[%emt 0:00:00]} Kf4 {[%emt 0:00:16]} 55. f7 {[%emt 0:00:00]} Rxf7 {[%emt 0:02:21]} 56. Bxf7 {[%emt 0:00:00]} Kxg4 {[%emt 0:00:03]} 57. a4 {[%emt 0:00:00]} Kxh4 {[%emt 0:00:06]} 58. a5 {[%emt 0:00:00]} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Ajay Krishna, S."]
[Black "Gschnitzer, Adrian"]
[Result "1/2-1/2"]
[ECO "A35"]
[WhiteElo "2289"]
[BlackElo "2368"]
[Annotator "NA"]
[PlyCount "82"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:20]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:12]} c5 {[%emt 0:00:01]} 3. Nc3 {[%emt 0:00:16]} Nc6 {[%emt 0:00:09]} 4. g3 {[%emt 0:00:14]} d5 {[%emt 0:00:31]} 5. cxd5 {[%emt 0:00:20]} Nxd5 {[%emt 0:00:09]} 6. Bg2 {[%emt 0:00:12]} g6 {[%emt 0:00:24]} 7. O-O {[%emt 0:01:11]} Bg7 {[%emt 0:00:06]} 8. Qa4 {[%emt 0:01:23]} O-O {[%emt 0:04:44]} 9. Qc4 {[%emt 0:00:46]} Nxc3 {[%emt 0:04:22]} 10. dxc3 {[%emt 0:00:15]} Qb6 {[%emt 0:02:16]} 11. Ng5 {[%emt 0:00:13]} Ne5 {[%emt 0:05:11]} 12. Qb3 {[%emt 0:00:44]} h6 {[%emt 0:02:33]} 13. Nf3 {[%emt 0:00:10]} Be6 {[%emt 0:17:19]} 14. Qxb6 {[%emt 0:01:33]} Nxf3+ {[%emt 0:00:09]} 15. Bxf3 {[%emt 0:00:03]} axb6 {[%emt 0:00:13]} 16. a3 {[%emt 0:06:35]} Bc4 {[%emt 0:02:41]} 17. Be3 {[%emt 0:12:29]} Rad8 {[%emt 0:06:53]} 18. Rfd1 {[%emt 0:04:13]} e6 {[%emt 0:10:06]} 19. Kf1 {[%emt 0:13:02]} Bd5 {[%emt 0:02:48]} 20. a4 {[%emt 0:03:51]} Bxf3 {[%emt 0:05:57]} 21. exf3 {[%emt 0:00:03]} Rxd1+ {[%emt 0:03:22]} 22. Rxd1 {[%emt 0:00:03]} Ra8 {[%emt 0:00:15]} 23. Rd6 {[%emt 0:01:50]} Ra6 {[%emt 0:02:05]} 24. Rd8+ {[%emt 0:00:29]} Kh7 {[%emt 0:00:27]} 25. Rd7 {[%emt 0:00:21]} Rxa4 {[%emt 0:01:04]} 26. Rxb7 {[%emt 0:00:59]} Ra1+ {[%emt 0:00:38]} 27. Ke2 {[%emt 0:02:57]} Rb1 {[%emt 0:06:25]} 28. Kd3 {[%emt 0:00:26]} Rxb2 {[%emt 0:01:24]} 29. Bxc5 {[%emt 0:00:18]} Rb3 {[%emt 0:03:48]} 30. Bb4 {[%emt 0:00:36]} Rb2 {[%emt 0:00:26]} 31. Rxf7 {[%emt 0:10:12]} Kg8 {[%emt 0:00:05]} 32. Re7 {[%emt 0:00:25]} Rxf2 {[%emt 0:00:35]} 33. Rxe6 {[%emt 0:05:57]} Rxf3+ {[%emt 0:00:47]} 34. Ke4 {[%emt 0:02:05]} Rf2 {[%emt 0:00:46]} 35. h4 {[%emt 0:04:31]} Re2+ {[%emt 0:06:32]} 36. Kd5 {[%emt 0:00:01]} Rxe6 {[%emt 0:00:23]} 37. Kxe6 {[%emt 0:00:01]} b5 {[%emt 0:00:11]} 38. g4 {[%emt 0:01:15]} h5 {[%emt 0:00:20]} 39. g5 {[%emt 0:10:28]} Bh8 {[%emt 0:00:21]} 40. Ba5 {[%emt 0:00:23]} Kf8 {[%emt 0:01:44]} 41. Bb4+ {[%emt 0:33:58]} Ke8 {[%emt 0:30:53]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Hrdina, Robin"]
[Black "Pechac, Jergus"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "2268"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,39,0,0,0,-4,0,-37,-20,-24,-17,-18,-25,-12,-6,-53,-31,-65,-69,-179,-179,-179,-177,-496,-472,-566]} 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 c5 5. c3 Nc6 6. Ne2 Nf6 7. O-O {C01: French: Exchange Variation} Be7 8. dxc5 Bxc5 9. Bg5 {LiveBook: 4 Games. The position is equal.} O-O 10. Bc2 $146 ({Predecessor:} 10. Nf4 Be6 11. b4 Bd6 12. Re1 h6 13. Nxe6 fxe6 14. Bh4 Ne5 {0-1 (56) Maltsevskaya,A (2251)-Demidov,M (2536) Khanty-Mansiysk 2016}) 10... Re8 {[#] aiming for ...Bg4.} 11. Nd4 h6 12. Bh4 $1 Bg4 13. f3 $1 {[%cal Rf3g4]} Bd7 {Strongly threatening ...Qb6.} 14. Kh1 Rc8 {[%cal Ba8c8,Bc8c3,Bc3d3][%mdl 32]} 15. Na3 Ne5 (15... Nxd4 {looks sharper.} 16. cxd4 Bb4 17. Bd3 Qb6 18. Qb3 Bxa3 19. Qxa3 Nh5) 16. Bb3 Bxa3 17. Bxf6 (17. bxa3 $15 Rxc3 18. Qb1) 17... Qxf6 $19 18. bxa3 Rxc3 19. Bxd5 $2 {[#]} (19. Qd2 {is a better chance.} Rd3 20. Qf2) 19... Rd3 20. Qc1 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Chudinovskikh, Alexander M"]
[Black "Spiess, Gunter"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2184"]
[BlackElo "2414"]
[Annotator "TA"]
[PlyCount "169"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,169,8,-24,-24,-24,-22,-25,-12,-19,-24,-22,-16,-20,-20,-20,-17,-21,0,0,0,-67,-54,-55,0,0,-13,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-103,-86,-87,-106,-26,-95,-89,-100,-138,-132,-164,-156,-216,-216,-216,-219,-222,0,0,0,-204,-210,-225,-208,-212,-215,-213,-208,-227,-145,-145,-142,-248,-228,-250,-226,-242,-241,-284,-275,-284,-284,-284,-284,-284,-276,-282,-253,-322,-243,-308,-237,-314,-312,-335,-333,-333,-329,-320,-328,-321,-314,-294,-25,-25,-25,-25,-25,-33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-40,-47,-170,-177,-166,-130,-193,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. c4 Nf6 {[%cal Bg8f6,Bf6g4,Bg4e3][%mdl 32]} 6. Nc3 O-O 7. cxd5 Nbd7 8. Bc4 {LiveBook: 6 Games. C01: French: Exchange Variation} (8. Bg5 h6 9. Bh4 Nb6 10. Ne5 Be7 11. Bd3 Nfxd5 12. Bxe7 Nxe7 13. O-O Bf5 14. Bxf5 Nxf5 15. Qf3 Nd6 {½-½ (43) Nisipeanu,L (2682)-Ragger,M (2666) Graz 2018}) 8... Re8+ 9. Be3 Ng4 10. O-O Nxe3 11. fxe3 Rxe3 12. Qd2 Re8 13. Rae1 $146 Rxe1 14. Qxe1 Nf6 15. Ne5 a6 16. Qh4 Qe7 17. Kh1 (17. Bd3 $11) 17... Bxe5 $15 18. Re1 {[%mdl 64] Pin} Nxd5 (18... h6 {looks sharper.} 19. Rxe5 Qb4 20. Bb3 Bd7 21. h3 Kf8) 19. Rxe5 Be6 20. Qe1 Nxc3 21. bxc3 Qa3 22. Bxe6 fxe6 23. Rxe6 $11 {[%mdl 4096] Endgame KQR-KQR} Rf8 $36 {[%mdl 2048] Black has good play.} 24. h3 Qxa2 25. Re7 Qc4 {Strongly threatening ...Rf1+.} 26. Qe5 {[%csl Ge7][%cal Re5g7]} Rf7 27. Re8+ Rf8 28. d5 (28. Kh2 $11) 28... Qf1+ $17 29. Kh2 Rxe8 30. Qxe8+ {KQ-KQ} Qf8 31. Qe6+ Kh8 32. c4 b6 $1 33. Kh1 h6 $1 34. Qc6 (34. c5 $17) 34... Qf1+ $19 35. Kh2 Qf4+ 36. Kh1 {intending Qa8+.} Qf1+ $2 (36... a5 $19 37. Qe8+ Kh7) 37. Kh2 $11 Qf4+ $2 (37... Qf7 $11) 38. Kh1 $1 $19 a5 39. Qb5 Kh7 40. Qc6 Qd6 41. Qe8 Qf6 42. Qe4+ g6 43. Qe8 Kg7 44. Qd7+ (44. g4 $17) 44... Qf7 45. Qc6 Qe7 46. Qb5 h5 47. Qb2+ Kh7 48. Qb5 Qe1+ 49. Kh2 Qe5+ 50. Kh1 Kg7 51. Qd7+ Kf6 52. Qb5 Kg5 53. Qb3 Qe1+ 54. Kh2 h4 55. Qb5 Qe5+ 56. Kh1 Kf4 57. Qb1 Qe4 58. Qc1+ Qe3 59. Qd1 g5 $2 (59... Kf5 $19 60. Qa1 Qd2) 60. d6 $1 $11 {[%cal Rd6d7]} cxd6 61. Qxd6+ Kf5 62. Qd5+ $1 Kf6 (62... Qe5 $5 {[%cal Re5d5]} 63. Qf3+ Ke6 64. Qc6+ Qd6 65. Qe4+ Kd7 66. Qb7+ Kd8 $19) 63. Qd8+ $1 Kf7 64. Qc7+ $1 Kg6 65. Qd6+ Kh5 66. Qd1+ Kh6 67. Qd6+ Kg7 68. Qd7+ Kf6 69. Qd8+ $1 Kf5 {aiming for ...Qc5.} 70. Qd5+ $1 Qe5 71. Qd7+ (71. Qf7+ $1 $15 Qf6 72. Qd5+ Kg6 73. Kg1) 71... Qe6 $1 $19 {[%cal Re6d7]} 72. Qd3+ {[#]} Kf6 $1 73. Qd4+ {[#]} Kg6 $2 (73... Ke7 $1 $19 74. c5 b5) 74. c5 $1 $11 {The position is equal.} bxc5 75. Qxc5 Qa6 76. Qc2+ Kh6 77. Qf5 a4 78. Qf8+ Kg6 {And now ...Qb5 would win.} 79. Qe8+ Kf5 80. Qf7+ Ke4 {...a3 is the strong threat.} 81. Qe7+ Kf4 82. Qf7+ Ke5 {Hoping for ...Qb5.} 83. Qe7+ Kf5 {White must now prevent ...Qf1+.} 84. Qf7+ Ke5 {Threatens to win with ...Qb5.} 85. Qe7+ {Accuracy: White = 64%, Black = 69%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Mueller-Dehn, Christian"]
[Black "Plischki, Sebastian"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2167"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,72,18,0,-4,-12,-7,-2,0,-10,-8,-6,-35,-29,-53,-37,-64,-68,-68,-72,-61,-71,-70,-67,-69,-84,-109,-110,-101,-66,-67,-71,-80,-83,-73,-55,-139,-145,-140,-141,-129,-62,-312,-289,-285,-263,-288,-256,-277,-270,-264,-262,-352,-352,-350,-349,-323,-331,-461,-454]} 1. Nf3 Nf6 2. c4 g6 3. b4 Bg7 4. Bb2 O-O 5. g3 c6 6. Bg2 d5 7. cxd5 {A15: English Opening: 1...Nf6} Nxd5 (7... cxd5 8. O-O a5 9. b5 a4 10. Na3 Qd6 11. Nc2 Ne4 12. Rb1 Nd7 13. Bxg7 Kxg7 14. Rb4 Nef6 15. a3 e5 {1-0 (48) Salgado Lopez,I (2627)-Baklan,V (2601) Linares 2017}) 8. Bxg7 Kxg7 {LiveBook: 7 Games} 9. Qb3 {The position is equal.} Qb6 10. a3 a5 {[%cal Ra5b4]} 11. Nc3 axb4 12. Nxd5 cxd5 13. Rb1 Nc6 $36 {[%mdl 2048] Black has the initiative.} 14. O-O {[%cal Ra3b4]} Ra5 $146 ({Predecessor:} 14... d4 15. axb4 {½-½ (36) Srihari,L (2316)-Anurag,M (2491) Jammu 2018}) 15. e3 {[%cal Ra3b4]} Bf5 16. Rb2 Rfa8 17. axb4 Rb5 {[%cal Rb5b4]} 18. Qc3+ Kg8 {[%cal Rb5b4]} 19. Nh4 d4 (19... Nxb4 $2 20. Nxf5 gxf5 21. Rfb1 $18) (19... Rxb4 $6 20. Rxb4 Qxb4 21. Qxb4 $14) (19... Be4 {looks sharper.} 20. Bxe4 dxe4 21. Qc2 g5 22. Ng2 Rxb4 23. Rxb4 Qxb4 24. Rb1 Qa4) 20. exd4 Nxd4 21. Qe3 Be6 (21... Rxb4 $6 22. Nxf5 gxf5 23. Rxb4 $11) 22. Rfb1 Qd6 {[#] ...Re5 is the strong threat.} 23. Nf3 Nxf3+ 24. Bxf3 Rd8 25. Be2 ({Better is} 25. Be4 $15) 25... Re5 $17 26. Qf3 Bd5 27. Qd3 Qb6 (27... Qb8 $17 28. Re1 {[#]} b5 $1 {[%mdl 512]}) 28. Bf3 $2 (28. Bf1 $15) 28... Rf5 $19 29. Bxd5 Qxf2+ ({Not} 29... Rfxd5 30. Qe2 $17) (29... Rdxd5 30. Qe3 $15) 30. Kh1 {intending Bxf7+.} Rfxd5 ({Don't do} 30... Rdxd5 31. Qe3 $19) 31. Qe3 Qf5 32. Re1 e6 33. Ra2 Rd3 34. Qe4 Qxe4+ ({Don't play} 34... Rxd2 35. Qxf5 gxf5 36. Rxd2 $19) 35. Rxe4 Rxd2 36. Ra7 Rb2 {Precision: White = 39%, Black = 68%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Riha, Vojtech"]
[Black "Lalic, Bogdan"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "2145"]
[BlackElo "2418"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,-14,-17,-16,-22,-28,-9,-9,-9,-21,-22,-10,-20,-55,-55,-49,44,48,39,39,41,46,64,39,70,-26,53,31,76,53,68,17,55,0,0,0,0,0,0,0,0,0,0,0,0,0,162,152,149,147,164,154,130,-970]} 1. e4 c5 2. b4 cxb4 3. a3 e5 4. Nf3 Nc6 5. Bb5 (5. axb4 Bxb4 6. c3 Be7 7. d4 d6 8. Bb5 Bd7 9. Ba3 Nf6 10. O-O {0-1 (22) Perunovic,M (2696)-Bogosavljevic,B (2504) Belgrade 2014}) 5... Nf6 6. O-O {B20: Sicilian: Unusual White 2nd moves} Nxe4 7. Re1 $146 {[%cal Bf1e1,Be1e5,Be5h5,Bh5a5][%mdl 32]} ({Predecessor:} 7. axb4 Be7 8. Re1 Nd6 9. Bxc6 dxc6 10. Nxe5 O-O 11. d3 Re8 {½-½ (59) Windhausen,G (2486)-De Oliveira,J (2576) ICCF email 2010}) 7... Nd6 8. Nxe5 {The position is equal.} Be7 9. Bd3 Nxe5 10. Rxe5 O-O $1 {...Bf6 is the strong threat.} 11. Bb2 Bf6 12. axb4 Ne8 (12... Bxe5 $15 13. Bxe5 Re8 14. Bxd6 Qf6) 13. Rh5 $1 $36 {[%mdl 2048] Black is under pressure.} ({But not} 13. Qh5 g6 $15) 13... g6 $1 ({And not} 13... Bxb2 14. Bxh7+ Kh8 15. Bd3+ Kg8 16. Rh8+ $1 {[%mdl 512]} Kxh8 17. Qh5+ Kg8 18. Qh7#) 14. Bxf6 Nxf6 15. Rha5 a6 16. Nc3 Rb8 17. h4 (17. b5 $14) 17... d6 ({Better is} 17... b5 $11) 18. Qf3 Ng4 19. Qg3 b5 20. Nd5 (20. Be4 $14) 20... Ne5 21. h5 (21. Bf1 $14) 21... Bb7 $11 22. Nf4 {[%cal Rh5g6]} Qf6 23. Re1 Kh8 24. Be4 Nc4 25. Bxb7 Nxa5 26. Nd5 Qd4 27. bxa5 Rxb7 $2 (27... Qxd2 $11 28. Kf1 Rxb7 29. Qxd6 Kg7) 28. Qxd6 $18 {[%cal Rd6f8]} Rbb8 {[#] Hoping for ...Rbd8.} 29. Re5 $1 {[%mdl 1024] White threatens Qf6+ and mate. White has strong compensation.} Qh4 30. Nf6 {Threatens to win with g3.} Rfd8 31. Qe7 $2 {[%mdl 40960] Accuracy: White = 61%, Black = 53%. . An unexpected result.} (31. Nd7 $16) 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.16"]
[Round "7"]
[White "Michalczak, Thomas"]
[Black "Zhang, Xiaopeng"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2139"]
[BlackElo "2299"]
[Annotator "NA"]
[PlyCount "64"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:05]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:06]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:05]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:06]} a6 {[%emt 0:00:00]} 6. f3 {[%emt 0:00:07]} e5 {[%emt 0:00:04]} 7. Nb3 {[%emt 0:00:05]} Be6 {[%emt 0:00:04]} 8. Be3 {[%emt 0:00:06]} Be7 {[%emt 0:00:05]} 9. Qd2 {[%emt 0:00:09]} O-O {[%emt 0:00:07]} 10. O-O-O {[%emt 0:00:06]} Nbd7 {[%emt 0:00:02]} 11. g4 {[%emt 0:00:08]} b5 {[%emt 0:00:04]} 12. g5 {[%emt 0:02:35]} Nh5 {[%emt 0:01:52]} 13. Nd5 {[%emt 0:01:22]} Bxd5 {[%emt 0:00:14]} 14. exd5 {[%emt 0:00:06]} f5 {[%emt 0:01:27]} 15. gxf6 {[%emt 0:01:26]} Bxf6 {[%emt 0:00:08]} 16. Bh3 {[%emt 0:03:00]} Nb6 {[%emt 0:05:35]} 17. Na5 {[%emt 0:00:09]} Nf4 {[%emt 0:01:03]} 18. Be6+ {[%emt 0:06:22]} Kh8 {[%emt 0:02:30]} 19. Qb4 Qc7 {[%emt 0:08:43]} 20. Kb1 {[%emt 0:24:29]} Bd8 {[%emt 0:09:59]} 21. Bxb6 {[%emt 0:19:12]} Qxb6 {[%emt 0:00:08]} 22. Nc6 {[%emt 0:00:12]} Bc7 {[%emt 0:08:03]} 23. Qe4 {[%emt 0:01:45]} Qf2 {[%emt 0:01:01]} 24. Rhe1 {[%emt 0:11:49]} Bb6 {[%emt 0:01:42]} 25. h4 {[%emt 0:02:03]} Qg3 {[%emt 0:07:49]} 26. h5 {[%emt 0:02:57]} Ng2 {[%emt 0:01:31]} 27. Rh1 {[%emt 0:01:23]} Rf4 {[%emt 0:05:38]} 28. Rh3 {[%emt 0:00:33]} Qg5 {[%emt 0:00:04]} 29. Qd3 {[%emt 0:00:59]} Raf8 {[%emt 0:00:42]} 30. Qa3 {[%emt 0:02:05]} Ne3 {[%emt 0:02:20]} 31. Qxd6 {[%emt 0:08:41]} Nxd1 {[%emt 0:02:33]} 32. Nxe5 {[%emt 0:05:55]} Nf2 {[%emt 0:01:32]} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Postny, Evgeny"]
[Black "Frolov, Artur"]
[Result "1-0"]
[ECO "E92"]
[WhiteElo "2623"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,133,60,69,64,77,64,90,93,122,97,102,18,15,33,11,-20,0,0,0,0,36,36,60,49,88,80,92,4,0,0,56,41,56,10,29,16,72,15,60,0,0,0,16,0,0,0,0,0,0,0,0,10,20,3,8,0,3,0,0,0,0,1,1,8,77,8,8,8,8,8,98,73,461,443,443,423,356,221,1021,910,6111,5022,29970,29971,29966,29968,29977,29978,29978,29979,29979,29971,29963,0,29979,29980,29979,29978,29975,29977,29970,29970,29980,29981,29981,29982,29982,29983,29983,29984,29986,29985]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. d5 a5 8. h3 {[%cal Bh2h3,Bh3h4][%mdl 32]} Na6 9. Bg5 h6 10. Be3 Nc5 11. Nd2 Ne8 12. h4 {E92: King's Indian: Classical: 6 Be2 e5: 7 dxe5, 7 Be3 and Petrosian System without 7...Nbd7} (12. g4 f5 13. exf5 gxf5 14. Rg1 Kh8 15. g5 e4 16. Qc2 a4 17. O-O-O a3 18. b4 Na6 19. gxh6 Be5 20. f4 Bf6 {1-0 (69) Krasenkow,M (2609)-Mista,A (2517) Warsaw 2004}) 12... f5 {LiveBook: 4 Games} 13. Bxc5 $146 ({Predecessor:} 13. h5 Nd7 14. Nf1 f4 15. Bd2 g5 16. g4 Nc5 17. Nh2 Nf6 18. Qc2 Bd7 19. O-O Qe7 {1-0 (59) Croad,N (2307)-Bigg,A (2304) Brighton 2012}) 13... dxc5 14. h5 {White is better.} Ra6 15. Bf3 f4 16. hxg6 Rxg6 17. Bh5 ({White should play} 17. Qe2 $16) 17... Rxg2 $11 18. Kf1 {[%cal Be1f1,Bf1e2,Be2d3,Bd3c2][%mdl 32] [#]} f3 $1 {[%mdl 512]} 19. Bxf3 (19. Nxf3 Rg4) 19... Rg5 20. Ke2 Rf4 21. Kd3 c6 22. Kc2 cxd5 23. Nxd5 Rf8 24. Qe2 Nc7 25. Nxc7 (25. Rag1 $16) 25... Qxc7 26. Rag1 Bf6 (26... Qd8 $11) 27. Bh5 $14 Be6 28. Bg4 Bxg4 29. Rxg4 Qd7 (29... Rxg4 $11 30. Qxg4+ Qg7 31. Qe6+ Kh7) 30. Rgg1 (30. Rgh4 $16) 30... Kh7 31. Nf3 ({White should try} 31. Qe3 $1 $14 Rfg8 32. Rg3) 31... Rxg1 $11 32. Rxg1 Rd8 33. b3 a4 34. Rh1 axb3+ 35. axb3 Qg4 36. Qe3 Qf4 37. Qxf4 exf4 {[%mdl 4096] Endgame KRB-KRN} 38. Rh5 Ra8 {Threatening ...Ra2+.} 39. Kd3 Ra2 40. Rh2 Rb2 41. e5 Rxb3+ 42. Ke4 Be7 $1 43. Rh1 Kg6 (43... Rb2 $11 {remains equal.}) 44. e6 (44. Kxf4 $6 Rc3 $11) ({Better is} 44. Nh4+ $1 $16 Kf7 45. Kf5) 44... Bg5 $1 45. Ne5+ Kf6 $1 46. Nd7+ Ke7 (46... Kg6 $11) 47. Nxc5 Rc3 $2 {[%mdl 8192] [#]} (47... Rb6 $16) 48. Kd5 $1 $18 b6 49. Ne4 Ra3 {intending ...Ra5+.} 50. Rb1 Ra6 $2 (50... Bf6 51. c5 (51. Rxb6 Rd3+ 52. Kc6 Bd4 $14) 51... b5 52. Nxf6 (52. Rxb5 Rd3+ 53. Kc6 Be5 $16) 52... Kxf6) 51. c5 bxc5 52. Rb7+ Kf8 53. Nxg5 hxg5 {KR-KR} 54. Ke5 g4 55. Kf6 {[%cal Rb7b8]} Kg8 56. Rg7+ Kf8 57. Rc7 {[%cal Rc7c8]} Kg8 58. Rg7+ Kf8 {White must now prevent ...Rxe6+.} 59. Rxg4 {White mates.} c4 60. Rh4 {[%cal Rh4h8]} Kg8 61. Rxf4 Rc6 62. Ke7 c3 {[#]} 63. Rg4+ $1 Kh7 64. Kf7 {[%cal Rg4h4]} Kh6 65. e7 Rc7 66. Kf8 Kh5 67. Rg1 {Accuracy: White = 59%, Black = 39%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Pechac, Jergus"]
[Black "Vojta, Tomas"]
[Result "1/2-1/2"]
[ECO "D07"]
[WhiteElo "2472"]
[BlackElo "2351"]
[Annotator "ChessBase"]
[PlyCount "140"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:49]} 4. e3 {[%emt 0:01:25]} dxc4 {[%emt 0:04:42]} 5. Bxc4 {[%emt 0:00:06]} e5 {[%emt 0:01:10]} 6. d5 {[%emt 0:00:11]} Na5 {[%emt 0:10:56]} 7. Be2 {[%emt 0:10:50]} c6 {[%emt 0:03:03]} 8. e4 {[%emt 0:17:51]} Bb4 {[%emt 0:12:02]} 9. Qa4 {[%emt 0:00:52]} Bxc3+ {[%emt 0:02:41]} 10. bxc3 {[%emt 0:00:05]} Bd7 {[%emt 0:02:48]} 11. Bg5 {[%emt 0:08:27]} cxd5 {[%emt 0:06:23]} 12. Bb5 {[%emt 0:00:05]} Qc7 {[%emt 0:01:56]} 13. Bxd7+ {[%emt 0:07:06]} Nxd7 {[%emt 0:00:35]} 14. Ne2 {[%emt 0:02:26]} h6 {[%emt 0:06:27]} 15. Bh4 {[%emt 0:02:01]} dxe4 {[%emt 0:01:50]} 16. O-O-O {[%emt 0:00:20]} Nc6 {[%emt 0:03:57]} 17. Qxe4 {[%emt 0:01:39]} O-O {[%emt 0:00:43]} 18. Qg4 {[%emt 0:01:18]} f5 {[%emt 0:02:18]} 19. Qg6 {[%emt 0:01:13]} Nd4 {[%emt 0:07:04]} 20. Nxd4 {[%emt 0:00:57]} exd4 {[%emt 0:00:33]} 21. Qg3 {[%emt 0:02:45]} Qxg3 {[%emt 0:04:35]} 22. hxg3 {[%emt 0:02:16]} g5 {[%emt 0:01:20]} 23. Rxd4 {[%emt 0:00:39]} Nf6 {[%emt 0:00:45]} 24. g4 {[%emt 0:00:27]} gxh4 {[%emt 0:02:22]} 25. gxf5 {[%emt 0:00:07]} Rac8 {[%emt 0:02:15]} 26. Rdxh4 {[%emt 0:00:50]} Rxc3+ {[%emt 0:01:20]} 27. Kb2 {[%emt 0:00:06]} Rc5 {[%emt 0:01:21]} 28. g4 {[%emt 0:00:04]} Rb5+ {[%emt 0:03:42]} 29. Ka1 {[%emt 0:02:12]} Kf7 {[%emt 0:01:06]} 30. f3 {[%emt 0:00:10]} Ng8 {[%emt 0:00:47]} 31. R4h2 {[%emt 0:01:57]} Re8 {[%emt 0:01:01]} 32. Rd2 {[%emt 0:00:55]} Rbe5 {[%emt 0:00:42]} 33. Rhh2 {[%emt 0:00:39]} R8e7 {[%emt 0:03:21]} 34. Kb2 {[%emt 0:00:54]} Rc7 {[%emt 0:02:44]} 35. Rh1 {[%emt 0:00:26]} Rb5+ {[%emt 0:00:20]} 36. Ka1 {[%emt 0:00:04]} Nf6 {[%emt 0:01:36]} 37. a4 {[%emt 0:00:29]} Rb4 {[%emt 0:04:04]} 38. Rxh6 {[%emt 0:00:05]} Rxa4+ {[%emt 0:00:12]} 39. Kb2 {[%emt 0:00:04]} Rb4+ {[%emt 0:00:29]} 40. Ka3 {[%emt 0:00:20]} Rf4 {[%emt 0:04:16]} 41. g5 {[%emt 0:30:08]} Rxf3+ {[%emt 0:02:41]} 42. Kb2 {[%emt 0:00:00]} Rxf5 {[%emt 0:04:35]} 43. gxf6 {[%emt 0:00:00]} Rb5+ {[%emt 0:01:37]} 44. Ka3 {[%emt 0:00:00]} Rc1 {[%emt 0:06:21]} 45. Ka4 {[%emt 0:00:00]} a6 {[%emt 0:01:37]} 46. Rd7+ {[%emt 0:00:00]} Ke6 {[%emt 0:00:11]} 47. Re7+ {[%emt 0:00:00]} Kd6 {[%emt 0:00:23]} 48. Rh3 {[%emt 0:00:00]} Ra1+ {[%emt 0:01:46]} 49. Ra3 {[%emt 0:00:00]} Rxa3+ {[%emt 0:01:30]} 50. Kxa3 {[%emt 0:00:00]} Kc6 {[%emt 0:00:59]} 51. Re6+ {[%emt 0:00:00]} Kc7 {[%emt 0:00:08]} 52. Re7+ {[%emt 0:00:00]} Kb6 {[%emt 0:00:08]} 53. Re6+ {[%emt 0:00:00]} Ka7 {[%emt 0:02:27]} 54. Ka4 {[%emt 0:00:00]} Rf5 {[%emt 0:01:18]} 55. Kb4 {[%emt 0:00:00]} a5+ {[%emt 0:00:48]} 56. Kc4 {[%emt 0:00:17]} b6 {[%emt 0:00:45]} 57. Re7+ {[%emt 0:03:33]} Ka6 {[%emt 0:01:11]} 58. f7 {[%emt 0:00:07]} b5+ {[%emt 0:00:38]} 59. Kd3 {[%emt 0:01:13]} a4 {[%emt 0:00:48]} 60. Kc3 {[%emt 0:00:15]} Rf4 {[%emt 0:00:28]} 61. Re4 {[%emt 0:00:08]} Rxf7 {[%emt 0:01:44]} 62. Kb4 {[%emt 0:00:03]} Rf6 {[%emt 0:00:27]} 63. Rh4 {[%emt 0:00:12]} Kb6 {[%emt 0:00:58]} 64. Rg4 {[%emt 0:00:05]} Kc6 {[%emt 0:00:50]} 65. Rh4 {[%emt 0:00:03]} Re6 {[%emt 0:00:08]} 66. Rg4 {[%emt 0:00:08]} Re5 {[%emt 0:03:06]} 67. Rh4 {[%emt 0:00:36]} Kd6 {[%emt 0:00:25]} 68. Rh6+ {[%emt 0:00:35]} Re6 {[%emt 0:00:45]} 69. Rh5 {[%emt 0:00:06]} Kc6 {[%emt 0:00:54]} 70. Rc5+ {[%emt 0:00:04]} Kb6 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Wang, Yiye"]
[Black "Mishuchkov, Nikolai M."]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2443"]
[BlackElo "2308"]
[Annotator "NA RC"]
[PlyCount "115"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:17:45]} d5 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:23]} Bg4 {[%emt 0:00:00]} 3. Bg2 {[%emt 0:00:13]} Nd7 {[%emt 0:00:15]} 4. O-O {[%emt 0:00:34]} c6 {[%emt 0:00:49]} 5. d3 {[%emt 0:00:31]} e5 {[%emt 0:00:58]} 6. Qe1 {[%emt 0:00:35]} Ngf6 {[%emt 0:00:36]} 7. h3 {[%emt 0:00:55]} Bxf3 {[%emt 0:01:53]} 8. Bxf3 {[%emt 0:05:54]} Be7 {[%emt 0:04:35]} 9. e4 {[%emt 0:03:50]} dxe4 {[%emt 0:00:18]} 10. dxe4 {[%emt 0:00:07]} O-O {[%emt 0:00:09]} 11. Nd2 {[%emt 0:08:07]} Qc7 {[%emt 0:03:04]} 12. a4 {[%emt 0:00:56]} a5 {[%emt 0:07:48]} 13. Nc4 {[%emt 0:03:40]} Bb4 {[%emt 0:00:23]} 14. Qe2 {[%emt 0:05:41]} Rfd8 {[%emt 0:05:10]} 15. Ne3 {[%emt 0:12:12]} Nf8 {[%emt 0:01:43]} 16. c3 {[%emt 0:04:41]} Bc5 {[%emt 0:00:35]} 17. Nf5 {[%emt 0:00:08]} Ne6 {[%emt 0:00:22]} 18. h4 {[%emt 0:00:11]} Ne8 {[%emt 0:15:27]} 19. Kg2 {[%emt 0:04:24]} Bf8 {[%emt 0:01:35]} 20. Be3 {[%emt 0:11:56]} Bc5 {[%emt 0:00:50]} 21. Bd2 {[%emt 0:05:19]} Bf8 {[%emt 0:04:24]} 22. Be3 {[%emt 0:02:05]} Bc5 {[%emt 0:00:09]} 23. Bc1 {[%emt 0:00:04]} Bf8 {[%emt 0:00:30]} 24. Ne3 {[%emt 0:00:06]} Nc5 {[%emt 0:03:16]} 25. Nc4 {[%emt 0:00:25]} Nb3 {[%emt 0:02:02]} 26. Be3 {[%emt 0:00:04]} Nxa1 {[%emt 0:00:05]} 27. Bb6 {[%emt 0:00:03]} Qe7 {[%emt 0:01:20]} 28. Rxa1 {[%emt 0:01:59]} Nc7 {[%emt 0:00:36]} 29. Nxa5 {[%emt 0:03:52]} Ra6 {[%emt 0:00:25]} 30. Qe3 {[%emt 0:01:20]} Rda8 {[%emt 0:00:30]} 31. b4 {[%emt 0:00:36]} Ne6 {[%emt 0:00:39]} 32. Be2 {[%emt 0:01:14]} c5 {[%emt 0:01:03]} 33. Bxa6 {[%emt 0:00:12]} Rxa6 {[%emt 0:00:23]} 34. bxc5 {[%emt 0:01:08]} Nxc5 {[%emt 0:04:19]} 35. Bxc5 {[%emt 0:01:30]} Qxc5 {[%emt 0:00:05]} 36. Qxc5 {[%emt 0:00:04]} Bxc5 {[%emt 0:00:06]} 37. Nxb7 {[%emt 0:00:04]} Be7 {[%emt 0:00:15]} 38. a5 {[%emt 0:00:04]} Kf8 {[%emt 0:00:06]} 39. Ra4 {[%emt 0:01:09]} Ra7 {[%emt 0:01:10]} 40. a6 {[%emt 0:00:32]} Ke8 {[%emt 0:00:06]} 41. Ra5 {[%emt 0:33:48]} f6 {[%emt 0:34:46]} 42. c4 {[%emt 0:00:24]} Kd7 {[%emt 0:00:15]} 43. c5 {[%emt 0:00:06]} h5 {[%emt 0:00:49]} 44. Kf3 {[%emt 0:00:23]} g6 {[%emt 0:00:11]} 45. Ke3 {[%emt 0:00:24]} Kc6 {[%emt 0:02:21]} 46. Kd3 {[%emt 0:00:13]} g5 {[%emt 0:00:25]} 47. Kc4 {[%emt 0:00:50]} gxh4 {[%emt 0:00:06]} 48. gxh4 {[%emt 0:00:04]} f5 {[%emt 0:00:32]} 49. exf5 {[%emt 0:00:00]} Bxh4 {[%emt 0:00:00]} 50. Ra2 {[%emt 0:00:00]} Be7 {[%emt 0:00:00]} 51. Na5+ {[%emt 0:00:00]} Kc7 {[%emt 0:00:00]} 52. Kb5 {[%emt 0:00:00]} Ra8 {[%emt 0:00:00]} 53. Nc6 {[%emt 0:00:00]} Bg5 {[%emt 0:00:00]} 54. f3 {[%emt 0:00:00]} Rg8 {[%emt 0:00:00]} 55. Nxe5 {[%emt 0:00:00]} h4 {[%emt 0:00:00]} 56. a7 {[%emt 0:00:00]} Kb7 {[%emt 0:00:00]} 57. a8=Q+ {[%emt 0:00:00]} Rxa8 {[%emt 0:00:00]} 58. c6+ {[%emt 0:00:00]} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Xiang, Zeyu"]
[Black "Gschnitzer, Adrian"]
[Result "1-0"]
[ECO "A58"]
[WhiteElo "2440"]
[BlackElo "2368"]
[Annotator "NA"]
[PlyCount "109"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 3. d5 {[%emt 0:00:00]} b5 {[%emt 0:00:00]} 4. cxb5 a6 5. bxa6 {[%emt 0:00:00]} g6 {[%emt 0:00:17]} 6. Nc3 {[%emt 0:00:06]} Bg7 {[%emt 0:00:08]} 7. e4 {[%emt 0:00:05]} O-O {[%emt 0:00:11]} 8. Be2 {[%emt 0:00:05]} Qa5 {[%emt 0:00:15]} 9. Bd2 {[%emt 0:00:07]} Bxa6 {[%emt 0:00:15]} 10. e5 {[%emt 0:00:06]} Ne8 {[%emt 0:00:12]} 11. Nf3 {[%emt 0:00:07]} d6 {[%emt 0:00:21]} 12. e6 {[%emt 0:00:11]} Bxe2 {[%emt 0:00:12]} 13. Qxe2 {[%emt 0:04:51]} Qa6 {[%emt 0:00:08]} 14. exf7+ {[%emt 0:02:28]} Rxf7 {[%emt 0:00:12]} 15. Ng5 {[%emt 0:11:10]} Qxe2+ {[%emt 0:00:11]} 16. Kxe2 {[%emt 0:00:03]} Rf5 {[%emt 0:00:12]} 17. Nge4 {[%emt 0:13:39]} Nc7 {[%emt 0:01:55]} 18. g4 {[%emt 0:01:34]} Rf8 {[%emt 0:04:01]} 19. a3 {[%emt 0:03:21]} Nd7 {[%emt 0:00:54]} 20. b4 {[%emt 0:23:10]} e6 {[%emt 0:20:08]} 21. bxc5 {[%emt 0:05:13]} exd5 {[%emt 0:00:32]} 22. cxd6 {[%emt 0:01:59]} Nb5 {[%emt 0:18:10]} 23. Nxd5 {[%emt 0:06:18]} Bxa1 {[%emt 0:00:47]} 24. Rxa1 {[%emt 0:00:05]} Rxa3 {[%emt 0:00:38]} 25. Rxa3 {[%emt 0:08:42]} Nxa3 {[%emt 0:00:02]} 26. Ne7+ {[%emt 0:01:45]} Kf7 {[%emt 0:00:44]} 27. Ng5+ {[%emt 0:00:10]} Ke8 {[%emt 0:00:19]} 28. Nxh7 {[%emt 0:06:43]} Rh8 {[%emt 0:00:29]} 29. Ng5 {[%emt 0:04:52]} Rxh2 {[%emt 0:00:09]} 30. Bf4 {[%emt 0:00:16]} Rh4 {[%emt 0:01:12]} 31. f3 {[%emt 0:00:50]} Nc4 {[%emt 0:02:02]} 32. Nd5 {[%emt 0:05:53]} Rh1 {[%emt 0:01:34]} 33. Nc7+ {[%emt 0:00:56]} Kd8 {[%emt 0:04:17]} 34. Nf7+ {[%emt 0:01:02]} Kc8 {[%emt 0:00:16]} 35. Nd5 {[%emt 0:00:55]} Nc5 {[%emt 0:27:58]} 36. Ne7+ {[%emt 0:00:25]} Kd7 {[%emt 0:00:04]} 37. Nxg6 {[%emt 0:00:13]} Ke6 {[%emt 0:00:09]} 38. Ng5+ {[%emt 0:00:27]} Kf6 {[%emt 0:00:06]} 39. Ne7 {[%emt 0:00:26]} Ra1 {[%emt 0:03:44]} 40. Nd5+ {[%emt 0:00:34]} Kg6 {[%emt 0:00:17]} 41. Nc3 {[%emt 0:02:58]} Nb2 {[%emt 0:08:03]} 42. Nge4 {[%emt 0:04:01]} Ne6 {[%emt 0:01:17]} 43. Bg3 {[%emt 0:07:39]} Kf7 {[%emt 0:06:46]} 44. f4 {[%emt 0:01:20]} Ra5 {[%emt 0:01:08]} 45. f5 {[%emt 0:01:40]} Nd4+ {[%emt 0:02:27]} 46. Ke3 {[%emt 0:00:10]} Nxf5+ {[%emt 0:06:49]} 47. gxf5 {[%emt 0:00:05]} Rxf5 {[%emt 0:00:07]} 48. Kd4 {[%emt 0:00:26]} Rh5 {[%emt 0:01:22]} 49. Bf4 {[%emt 0:04:53]} Rh1 {[%emt 0:03:28]} 50. d7 {[%emt 0:06:59]} Ke7 {[%emt 0:00:36]} 51. Nc5 {[%emt 0:00:23]} Rh4 {[%emt 0:01:17]} 52. Nd5+ {[%emt 0:00:06]} Kd8 {[%emt 0:00:09]} 53. Ke3 {[%emt 0:00:31]} Nc4+ {[%emt 0:01:32]} 54. Ke2 {[%emt 0:01:22]} Rh5 {[%emt 0:02:08]} 55. Bc7# 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Plischki, Sebastian"]
[Black "Kulhanek, Tomas"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "2426"]
[BlackElo "2303"]
[Annotator "NA RC"]
[PlyCount "73"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 2. e4 {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} d6 {[%emt 0:00:33]} 4. f4 {[%emt 0:00:13]} Nf6 {[%emt 0:01:17]} 5. Nf3 {[%emt 0:00:14]} c5 {[%emt 0:00:46]} 6. Bb5+ {[%emt 0:00:36]} Nbd7 {[%emt 0:01:14]} 7. e5 {[%emt 0:01:34]} Ng8 {[%emt 0:06:35]} 8. dxc5 {[%emt 0:02:51]} dxc5 {[%emt 0:02:44]} 9. Be3 {[%emt 0:00:58]} Nh6 {[%emt 0:07:47]} 10. Bxc5 {[%emt 0:02:10]} O-O {[%emt 0:00:11]} 11. Bf2 {[%emt 0:01:04]} Ng4 {[%emt 0:01:04]} 12. O-O {[%emt 0:01:58]} Nxf2 {[%emt 0:02:54]} 13. Rxf2 {[%emt 0:00:06]} Nb6 {[%emt 0:01:29]} 14. a4 {[%emt 0:03:41]} Be6 {[%emt 0:02:08]} 15. Ng5 {[%emt 0:05:32]} Nd5 {[%emt 0:02:47]} 16. Nxe6 {[%emt 0:04:26]} fxe6 {[%emt 0:00:03]} 17. Qg4 {[%emt 0:06:24]} Nxc3 {[%emt 0:03:49]} 18. Qxe6+ {[%emt 0:00:35]} Kh8 {[%emt 0:00:05]} 19. bxc3 {[%emt 0:00:05]} Qc7 {[%emt 0:00:30]} 20. Raf1 {[%emt 0:04:54]} Rad8 {[%emt 0:02:01]} 21. Bd3 {[%emt 0:01:19]} Qd7 {[%emt 0:01:57]} 22. Qxd7 {[%emt 0:01:58]} Rxd7 {[%emt 0:00:02]} 23. h4 {[%emt 0:01:02]} Rc7 {[%emt 0:03:35]} 24. c4 {[%emt 0:01:26]} Rc6 {[%emt 0:05:05]} 25. Rb1 {[%emt 0:01:03]} b6 {[%emt 0:01:42]} 26. g4 {[%emt 0:01:23]} e6 {[%emt 0:01:47]} 27. Kg2 {[%emt 0:00:30]} Rf7 {[%emt 0:04:40]} 28. Kg3 {[%emt 0:00:44]} Rc5 {[%emt 0:03:16]} 29. Rb5 {[%emt 0:02:34]} Bf8 {[%emt 0:02:12]} 30. Rh2 {[%emt 0:01:35]} Rxb5 {[%emt 0:05:07]} 31. cxb5 {[%emt 0:00:17]} Bb4 {[%emt 0:00:35]} 32. Kf3 {[%emt 0:05:19]} Kg7 {[%emt 0:05:02]} 33. Bc4 {[%emt 0:01:22]} Re7 {[%emt 0:02:34]} 34. h5 {[%emt 0:00:49]} gxh5 {[%emt 0:03:50]} 35. Rxh5 {[%emt 0:00:14]} h6 {[%emt 0:00:14]} 36. Ke4 {[%emt 0:00:34]} Bc3 {[%emt 0:02:13]} 37. Rh3 {[%emt 0:00:17]} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Lalic, Bogdan"]
[Black "Bednar, Marcel"]
[Result "1-0"]
[ECO "E68"]
[WhiteElo "2418"]
[BlackElo "2268"]
[Annotator "NA"]
[PlyCount "83"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:03:51]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:04]} g6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:06]} Bg7 {[%emt 0:00:00]} 4. g3 {[%emt 0:00:06]} O-O {[%emt 0:03:39]} 5. Bg2 {[%emt 0:00:10]} d6 {[%emt 0:01:01]} 6. Nc3 {[%emt 0:00:07]} Nbd7 {[%emt 0:01:02]} 7. O-O {[%emt 0:00:12]} e5 {[%emt 0:00:23]} 8. e4 {[%emt 0:00:14]} c6 {[%emt 0:01:02]} 9. Be3 {[%emt 0:00:18]} Ng4 {[%emt 0:02:58]} 10. Bg5 {[%emt 0:00:07]} f6 {[%emt 0:01:54]} 11. Bd2 {[%emt 0:00:25]} f5 {[%emt 0:01:22]} 12. exf5 {[%emt 0:02:54]} gxf5 {[%emt 0:02:32]} 13. Ne2 {[%emt 0:01:00]} Qe8 {[%emt 0:11:38]} 14. Nh4 {[%emt 0:13:40]} Ndf6 {[%emt 0:06:38]} 15. Bb4 {[%emt 0:02:11]} Ne4 {[%emt 0:13:08]} 16. f3 {[%emt 0:22:24]} Ne3 {[%emt 0:06:05]} 17. Qd3 {[%emt 0:00:04]} Nxg2 {[%emt 0:03:10]} 18. Kxg2 {[%emt 0:03:12]} a5 {[%emt 0:10:08]} 19. Ba3 {[%emt 0:01:46]} exd4 {[%emt 0:15:02]} 20. fxe4 {[%emt 0:00:07]} fxe4 {[%emt 0:03:07]} 21. Rxf8+ {[%emt 0:00:14]} Kxf8 {[%emt 0:01:22]} 22. Bxd6+ {[%emt 0:00:13]} Kg8 {[%emt 0:00:08]} 23. Qa3 {[%emt 0:10:46]} b5 {[%emt 0:02:46]} 24. Qc5 {[%emt 0:00:47]} d3 {[%emt 0:02:43]} 25. Nf4 {[%emt 0:01:17]} e3 {[%emt 0:00:24]} 26. Be7 {[%emt 0:01:58]} e2 {[%emt 0:04:03]} 27. Nxd3 {[%emt 0:00:34]} bxc4 {[%emt 0:03:30]} 28. Qxc4+ {[%emt 0:08:57]} Kh8 {[%emt 0:00:21]} 29. Nf4 {[%emt 0:00:27]} c5 {[%emt 0:02:55]} 30. Qxe2 {[%emt 0:01:03]} Bb7+ {[%emt 0:01:12]} 31. Nf3 {[%emt 0:00:44]} Qc6 {[%emt 0:00:17]} 32. Kf2 {[%emt 0:07:29]} Re8 {[%emt 0:00:41]} 33. Ne5 {[%emt 0:06:42]} Qc7 {[%emt 0:00:34]} 34. Bd6 {[%emt 0:00:28]} Qc8 {[%emt 0:00:43]} 35. Re1 {[%emt 0:00:21]} Bc6 {[%emt 0:00:29]} 36. Qc4 {[%emt 0:00:34]} Qb7 {[%emt 0:00:28]} 37. Nf7+ {[%emt 0:00:39]} Qxf7 {[%emt 0:00:28]} 38. Qxf7 {[%emt 0:00:04]} Bd4+ {[%emt 0:00:30]} 39. Kf1 {[%emt 0:00:06]} Bb5+ {[%emt 0:00:23]} 40. Kg2 {[%emt 0:00:22]} Bc6+ {[%emt 0:00:23]} 41. Kh3 {[%emt 0:30:08]} Rxe1 {[%emt 0:30:42]} 42. Qf8# {[%emt 0:00:04]} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Spiess, Gunter"]
[Black "Kulkarni Bhakti"]
[Result "1/2-1/2"]
[ECO "D56"]
[WhiteElo "2414"]
[BlackElo "2303"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,83,19,14,18,15,40,45,46,22,52,53,62,64,68,62,70,63,66,61,64,56,93,79,93,44,89,85,108,106,110,108,133,102,133,107,124,124,115,128,181,124,119,119,118,101,109,101,126,120,121,118,126,125,218,217,206,168,190,109,119,55,56,0,117,0,25,0]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. Rc1 Nxc3 10. Rxc3 dxc4 {D56: Queen's Gambit Declined: Lasker Defence} (10... c6 11. g4 dxc4 12. Bxc4 Nd7 13. g5 hxg5 14. Rg1 f6 15. h4 g4 16. Rxg4 Nb6 17. Bb3 Nd5 18. Rc1 e5 {½-½ (36) Wojtaszek,R (2733)-Jakovenko,D (2712) Poikovsky 2016}) 11. Bxc4 b6 12. O-O Bb7 {White is slightly better.} 13. Qe2 Nd7 14. Bb5 c5 15. Bxd7 Qxd7 16. dxc5 bxc5 $146 ({Predecessor:} 16... Rfc8 17. Rfc1 bxc5 18. Rxc5 Rxc5 19. Rxc5 Rd8 20. Nd4 Qd6 21. Qb5 {1-0 (54) Alsina Leal,D (2550)-Klein,D (2498) Barcelona 2014}) 17. Rxc5 Rac8 18. Rfc1 Rxc5 19. Rxc5 Rc8 20. Rxc8+ Qxc8 21. h3 Qc6 22. Qd2 a6 23. a3 g6 24. Ne1 Qb6 25. f3 a5 26. Qd4 Qb3 27. Nd3 {Strongly threatening Ne5.} Qd1+ 28. Kh2 Bd5 (28... Qd2 $16) 29. Ne5 (29. b4 $18) 29... Qxd4 $16 30. exd4 {[%mdl 4096] Endgame KB-KN} a4 31. Kg3 Kf8 32. h4 Ke7 33. f4 Be4 34. Kf2 f6 35. Nc4 $1 h5 (35... g5 $16 {keeps fighting.}) 36. Nd2 $1 $18 {[%cal Rd2e4]} Bc2 37. Ke3 Kd6 38. Nc4+ (38. Ne4+ $18 Kd5 39. Nxf6+ Kc4 40. Kd2) 38... Kd5 $16 {[#]} 39. Nb6+ (39. Na5 $1 $16) 39... Kc6 $14 40. Nc4 (40. Kd2 $1 $14 Bb3 41. Nc8) 40... Kd5 $16 {[#]} 41. Nb6+ (41. Na5 $1 $16) 41... Kc6 $11 42. Nc4 {Accuracy: White = 51%, Black = 54%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Roeder, Matthias"]
[Black "Qiu, Mengjie"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2396"]
[BlackElo "2247"]
[Annotator "NA"]
[PlyCount "84"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Bg2 {[%emt 0:00:00]} d5 {[%emt 0:00:03]} 4. O-O {[%emt 0:00:22]} c5 {[%emt 0:00:03]} 5. d4 {[%emt 0:00:29]} Nc6 {[%emt 0:00:18]} 6. c4 {[%emt 0:00:43]} dxc4 {[%emt 0:00:06]} 7. dxc5 {[%emt 0:00:54]} Bxc5 {[%emt 0:07:14]} 8. Qxd8+ {[%emt 0:01:49]} Kxd8 {[%emt 0:00:12]} 9. Nbd2 {[%emt 0:00:45]} Ke7 {[%emt 0:01:16]} 10. Nxc4 {[%emt 0:01:52]} Rd8 {[%emt 0:05:02]} 11. b3 {[%emt 0:05:51]} Bd7 {[%emt 0:04:41]} 12. Bb2 {[%emt 0:00:47]} Rac8 {[%emt 0:04:22]} 13. Rac1 {[%emt 0:03:32]} b6 {[%emt 0:04:12]} 14. a3 {[%emt 0:18:40]} a5 {[%emt 0:02:15]} 15. Rc2 {[%emt 0:14:25]} b5 {[%emt 0:05:40]} 16. Ncd2 {[%emt 0:00:22]} Bb6 {[%emt 0:02:53]} 17. Rfc1 {[%emt 0:03:24]} e5 {[%emt 0:03:19]} 18. e3 {[%emt 0:01:08]} Nd5 {[%emt 0:17:18]} 19. Bxe5 {[%emt 0:12:56]} Nxe3 {[%emt 0:03:28]} 20. fxe3 {[%emt 0:02:10]} Bxe3+ {[%emt 0:00:23]} 21. Kf1 {[%emt 0:01:52]} Nxe5 {[%emt 0:04:06]} 22. Nxe5 {[%emt 0:02:14]} Bxd2 {[%emt 0:00:45]} 23. Rxc8 {[%emt 0:00:31]} Bxc8 {[%emt 0:00:12]} 24. Nc6+ {[%emt 0:01:57]} Kf6 {[%emt 0:01:42]} 25. Rc5 {[%emt 0:02:42]} Re8 {[%emt 0:01:15]} 26. Rc2 {[%emt 0:00:57]} Be3 {[%emt 0:02:15]} 27. Nxa5 {[%emt 0:00:16]} Bf5 {[%emt 0:00:50]} 28. Rc6+ {[%emt 0:00:20]} Ke5 {[%emt 0:11:09]} 29. Bf3 {[%emt 0:03:03]} Bh3+ {[%emt 0:03:49]} 30. Ke2 {[%emt 0:01:42]} Bg1 {[%emt 0:02:55]} 31. Kd2 {[%emt 0:01:45]} Bd7 {[%emt 0:01:53]} 32. Rc7 {[%emt 0:02:07]} Kd6 {[%emt 0:04:09]} 33. Rxd7+ {[%emt 0:01:13]} Kxd7 {[%emt 0:00:13]} 34. Bc6+ {[%emt 0:00:06]} Ke7 {[%emt 0:00:08]} 35. Bxe8 {[%emt 0:00:08]} Kxe8 {[%emt 0:00:05]} 36. h3 {[%emt 0:01:08]} Kd7 {[%emt 0:03:10]} 37. b4 {[%emt 0:05:51]} f5 {[%emt 0:01:57]} 38. Nb3 {[%emt 0:06:23]} Bf2 {[%emt 0:02:16]} 39. g4 {[%emt 0:00:07]} f4 {[%emt 0:00:13]} 40. Kd3 {[%emt 0:01:16]} Be3 {[%emt 0:02:19]} 41. h4 {[%emt 0:30:43]} g6 {[%emt 0:31:24]} 42. Ke4 {[%emt 0:01:07]} Kc6 {[%emt 0:00:00]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Zhang, Ziji"]
[Black "Ajay Krishna, S."]
[Result "1/2-1/2"]
[ECO "A58"]
[WhiteElo "2387"]
[BlackElo "2289"]
[Annotator "NA"]
[PlyCount "156"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:32]} 2. c4 {[%emt 0:00:00]} c5 {[%emt 0:00:16]} 3. d5 {[%emt 0:00:34]} b5 {[%emt 0:00:15]} 4. cxb5 {[%emt 0:00:30]} a6 {[%emt 0:00:10]} 5. bxa6 {[%emt 0:00:16]} e6 {[%emt 0:00:09]} 6. Nc3 {[%emt 0:00:46]} exd5 {[%emt 0:00:40]} 7. Nxd5 {[%emt 0:00:11]} Nxa6 {[%emt 0:00:13]} 8. Bg5 {[%emt 0:01:13]} Be7 {[%emt 0:00:10]} 9. Nxe7 {[%emt 0:00:24]} Qxe7 {[%emt 0:00:04]} 10. Nf3 {[%emt 0:00:33]} O-O {[%emt 0:01:05]} 11. e3 {[%emt 0:00:16]} Bb7 {[%emt 0:00:19]} 12. Be2 {[%emt 0:00:30]} d6 {[%emt 0:02:13]} 13. O-O {[%emt 0:00:44]} h6 {[%emt 0:00:13]} 14. Bh4 {[%emt 0:03:29]} g5 {[%emt 0:03:01]} 15. Bg3 {[%emt 0:00:13]} Ne4 {[%emt 0:00:08]} 16. Nd2 {[%emt 0:02:26]} Nxg3 {[%emt 0:01:48]} 17. hxg3 {[%emt 0:00:07]} d5 {[%emt 0:02:03]} 18. a3 {[%emt 0:06:41]} Nc7 {[%emt 0:06:02]} 19. Re1 {[%emt 0:03:46]} Ne6 {[%emt 0:00:46]} 20. Nf3 {[%emt 0:04:50]} Rfb8 {[%emt 0:07:27]} 21. b4 {[%emt 0:06:29]} cxb4 {[%emt 0:02:26]} 22. axb4 {[%emt 0:00:08]} Qxb4 {[%emt 0:00:55]} 23. Rb1 {[%emt 0:04:18]} Qd6 {[%emt 0:05:08]} 24. Nd4 {[%emt 0:02:52]} Qe5 {[%emt 0:02:21]} 25. Nxe6 {[%emt 0:11:29]} Qxe6 {[%emt 0:06:01]} 26. Bf3 {[%emt 0:02:42]} Bc6 {[%emt 0:07:33]} 27. Qd4 {[%emt 0:01:10]} Qd6 {[%emt 0:03:44]} 28. Rxb8+ {[%emt 0:09:36]} Rxb8 {[%emt 0:00:02]} 29. Rd1 {[%emt 0:01:43]} Rb4 {[%emt 0:06:22]} 30. Qd2 {[%emt 0:01:51]} Qb8 {[%emt 0:04:04]} 31. Bxd5 {[%emt 0:10:16]} Bxd5 {[%emt 0:00:03]} 32. Qxd5 {[%emt 0:00:05]} Rb1 {[%emt 0:00:09]} 33. Kh2 {[%emt 0:00:20]} Rxd1 {[%emt 0:00:11]} 34. Qxd1 {[%emt 0:00:04]} Qb2 {[%emt 0:08:40]} 35. Qd8+ {[%emt 0:03:21]} Kh7 {[%emt 0:00:26]} 36. Qd3+ {[%emt 0:00:07]} Kg8 {[%emt 0:00:13]} 37. Qf5 {[%emt 0:00:11]} Qe2 {[%emt 0:03:06]} 38. g4 {[%emt 0:05:06]} Qb2 {[%emt 0:00:07]} 39. Kh3 {[%emt 0:06:21]} Qa1 {[%emt 0:01:33]} 40. Kg3 {[%emt 0:01:18]} Qc3 {[%emt 0:00:20]} 41. Qd5 {[%emt 0:30:48]} Qc7+ {[%emt 0:33:29]} 42. Kh3 {[%emt 0:00:14]} Qb6 {[%emt 0:02:56]} 43. Qe5 {[%emt 0:00:28]} Qa6 {[%emt 0:07:47]} 44. Kg3 {[%emt 0:03:58]} Qb6 {[%emt 0:09:06]} 45. Kh2 {[%emt 0:01:40]} Qb4 {[%emt 0:01:31]} 46. Qd4 {[%emt 0:00:17]} Qe7 {[%emt 0:00:39]} 47. Kh3 {[%emt 0:02:48]} Qe6 {[%emt 0:03:10]} 48. Kg3 {[%emt 0:00:39]} Qe7 {[%emt 0:00:14]} 49. f4 {[%emt 0:02:08]} gxf4+ {[%emt 0:00:11]} 50. exf4 {[%emt 0:00:05]} Qe1+ {[%emt 0:02:10]} 51. Kf3 {[%emt 0:01:00]} Qf1+ {[%emt 0:00:44]} 52. Qf2 {[%emt 0:00:04]} Qc4 {[%emt 0:01:51]} 53. Qe3 {[%emt 0:00:56]} Qc6+ {[%emt 0:00:39]} 54. Kg3 {[%emt 0:00:06]} Qd7 {[%emt 0:00:00]} 55. Qe5 {[%emt 0:00:00]} Qd3+ {[%emt 0:00:00]} 56. Kh2 {[%emt 0:00:00]} Qd1 {[%emt 0:00:00]} 57. Kh3 {[%emt 0:00:00]} Qd3+ {[%emt 0:00:00]} 58. Kh4 {[%emt 0:00:00]} Qf1 {[%emt 0:00:00]} 59. Qe4 {[%emt 0:00:00]} Qh1+ {[%emt 0:00:00]} 60. Kg3 {[%emt 0:00:00]} Qd1 {[%emt 0:00:00]} 61. Qe8+ {[%emt 0:00:00]} Kg7 {[%emt 0:00:00]} 62. Qe5+ {[%emt 0:00:00]} Kg8 {[%emt 0:00:00]} 63. Qf6 {[%emt 0:00:00]} Qh1 {[%emt 0:00:00]} 64. Qd8+ {[%emt 0:00:00]} Kg7 {[%emt 0:00:00]} 65. Qd4+ {[%emt 0:00:00]} Kg8 {[%emt 0:00:00]} 66. Qf6 {[%emt 0:00:00]} Kf8 {[%emt 0:00:00]} 67. Qh8+ {[%emt 0:00:00]} Ke7 {[%emt 0:00:00]} 68. Qe5+ {[%emt 0:00:00]} Kf8 {[%emt 0:00:00]} 69. f5 {[%emt 0:00:00]} Qc1 {[%emt 0:00:00]} 70. f6 {[%emt 0:00:00]} Qc8 {[%emt 0:00:00]} 71. Qf4 {[%emt 0:00:00]} Qc3+ {[%emt 0:00:00]} 72. Kh2 {[%emt 0:00:00]} Kg8 {[%emt 0:00:00]} 73. g5 {[%emt 0:00:00]} Qc5 {[%emt 0:00:00]} 74. Qe4 {[%emt 0:01:21]} hxg5 {[%emt 0:00:35]} 75. Qe8+ {[%emt 0:00:45]} Qf8 {[%emt 0:00:57]} 76. Qxf8+ {[%emt 0:01:53]} Kxf8 {[%emt 0:00:02]} 77. Kg3 {[%emt 0:00:14]} Ke8 {[%emt 0:00:14]} 78. Kg4 {[%emt 0:00:31]} Kd7 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Vokac, Marek"]
[Black "Chudinovskikh, Alexander M"]
[Result "1/2-1/2"]
[ECO "D21"]
[WhiteElo "2380"]
[BlackElo "2184"]
[Annotator "TA"]
[PlyCount "149"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,149,-16,-7,-43,-29,-27,-9,-20,0,-16,-18,-23,-16,-31,0,-72,-59,-72,-43,-95,-90,-81,-78,-81,-59,-67,-70,-120,-117,-121,-125,-133,-131,-118,-139,-150,-71,-80,-24,-125,-128,-251,-246,-317,-319,-312,-316,-334,-328,-276,-175,-168,-10,-214,-214,-214,-214,-214,-214,-214,-214,-214,-214,-214,-214,-226,-226,-222,-214,-214,-214,-256,-254,-243,-214,-200,-203,-251,-243,-255,-239,-239,-218,-220,-135,-135,-135,-135,-135,-141,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-135,-142,-18,-18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. d5 e6 5. e4 exd5 6. exd5 Nf6 7. Nc3 Bd6 8. Bxc4 O-O 9. O-O h6 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3} (9... Bg4 10. h3 Bh5 11. Bg5 h6 12. Bh4 Nbd7 13. Ne4 Bf4 14. Re1 g5 15. Bg3 Ne5 16. Be2 Nxe4 17. Bxf4 Nxf3+ 18. Bxf3 Bxf3 19. Qxf3 f5 20. Qh5 gxf4 21. Qg6+ {½-½ (21) Akopian,V (2698)-Shirov,A (2730) Ohrid 2009}) 10. h3 a6 11. a4 Bf5 {LiveBook: 4 Games} 12. Bd3 Bxd3 13. Qxd3 Nbd7 14. Be3 Re8 15. Rad1 $146 ({Predecessor:} 15. Qf5 Ne5 16. Nd2 {0-1 (44) Ferro,M (2235)-Amato,A (2267) Palermo 2007}) 15... Rc8 16. Nh4 Ne5 17. Qc2 g6 18. g3 (18. Bxh6 $11 {keeps the balance.} Nfg4 19. Bf4 Qxh4 20. Bg3) 18... Kh7 19. Kg2 c4 20. Qd2 (20. b3 $15) 20... Bf8 21. Nf3 Nxf3 22. Kxf3 Qd7 $1 23. Kg2 b5 24. axb5 axb5 25. Qd4 Bg7 26. Qb6 {[#]} Rb8 $1 $36 {[%cal Rb8b6][%mdl 2048] Black is really pushing.} 27. Qc6 b4 28. Ne2 Qxc6 (28... Rbd8 $142 {[%cal Rf6d5]} 29. Qxc4 Nxd5) 29. dxc6 $17 {[#]} Rbc8 (29... Rec8 $1 $17 30. Rd6 Ne8) 30. Nd4 (30. Rd7 $11) 30... Nd5 31. Nb5 (31. Nc2 $17 {keeps fighting.} Red8 32. Bd4) 31... Rxe3 $19 32. Na7 Rc7 ({Don't go for} 32... Rd8 $2 33. fxe3 Nxe3+ 34. Kf3 $18) 33. Rxd5 Ree7 34. Nb5 Rxc6 35. Nd4 Bxd4 36. Rxd4 {[%mdl 4096] Endgame KRR-KRR} c3 $2 ({Black should try} 36... Re2 $19 37. Rc1 Rf6) 37. bxc3 $2 (37. Rxb4 $11 {and White is okay.} c2 38. Rc1) 37... bxc3 38. Rc1 c2 39. Rd2 Rec7 40. Kf3 Kg7 41. Rd3 Kf6 42. Ke2 Rc5 43. Kd2 h5 44. Ke2 Kg5 45. Rd4 Kf5 46. Kf3 Rc3+ 47. Ke2 R7c5 48. Rf4+ Ke6 49. Kd2 g5 50. Ra4 Kf5 51. Rd4 f6 52. Ke2 g4 53. hxg4+ hxg4 54. Rd2 Ke4 55. Rd8 R3c4 56. Rd2 Rc6 57. Kf1 Rc3 58. Kg2 R6c4 59. Re1+ Kf5 60. Rc1 Kg5 61. Re2 f5 62. Rd2 f4 63. gxf4+ Kxf4 64. Re2 Rc8 65. Re7 g3 (65... Rb3 $17 66. Re2 Rb2) 66. fxg3+ $1 $11 {The position is equal.} Rxg3+ 67. Kf2 Rgc3 (67... Rg5 {feels hotter.} 68. Ke2 Rg6 69. Rf7+ Ke4 70. Rf2 Rg3) 68. Ke2 Rh3 69. Kd2 Rh2+ 70. Kd3 Rh3+ 71. Kd2 Kf5 {Strongly threatening ...Rh2+.} 72. Rf1+ Kg6 73. Re2 c1=Q+ 74. Rxc1 Rxc1 75. Kxc1 {Accuracy: White = 60%, Black = 66%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Cerveny, Petr"]
[Black "Riha, Vojtech"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2318"]
[BlackElo "2145"]
[Annotator "NA"]
[PlyCount "98"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 c5 {[%emt 0:00:00]} 2. Nf3 Nc6 {[%emt 0:00:14]} 3. Bb5 {[%emt 0:00:19]} g6 {[%emt 0:00:10]} 4. Bxc6 {[%emt 0:00:12]} dxc6 {[%emt 0:00:16]} 5. d3 {[%emt 0:00:06]} Bg4 {[%emt 0:01:12]} 6. Nbd2 {[%emt 0:00:15]} Bg7 {[%emt 0:00:51]} 7. h3 {[%emt 0:00:09]} Bxf3 {[%emt 0:00:14]} 8. Nxf3 {[%emt 0:00:09]} e5 {[%emt 0:01:53]} 9. O-O {[%emt 0:03:13]} Qe7 {[%emt 0:03:53]} 10. Qe1 {[%emt 0:06:48]} Nf6 {[%emt 0:03:49]} 11. Qc3 {[%emt 0:00:24]} Nd7 {[%emt 0:01:06]} 12. Bg5 {[%emt 0:05:38]} Qd6 {[%emt 0:08:26]} 13. Nd2 {[%emt 0:01:47]} O-O {[%emt 0:03:12]} 14. a4 {[%emt 0:03:08]} h6 {[%emt 0:05:26]} 15. Be3 {[%emt 0:02:55]} Kh7 {[%emt 0:02:51]} 16. a5 {[%emt 0:03:29]} f5 {[%emt 0:03:38]} 17. Nb3 {[%emt 0:00:46]} b6 {[%emt 0:01:09]} 18. f3 {[%emt 0:00:15]} f4 {[%emt 0:07:19]} 19. Bf2 {[%emt 0:00:18]} g5 {[%emt 0:00:13]} 20. Ra2 {[%emt 0:00:27]} h5 {[%emt 0:01:24]} 21. Rfa1 {[%emt 0:00:46]} Rad8 {[%emt 0:01:58]} 22. axb6 {[%emt 0:00:57]} axb6 {[%emt 0:00:05]} 23. Ra7 {[%emt 0:01:31]} Qg6 {[%emt 0:04:29]} 24. Kf1 {[%emt 0:22:01]} Rf7 {[%emt 0:07:35]} 25. Ke2 {[%emt 0:00:59]} Nf8 {[%emt 0:09:30]} 26. R1a6 {[%emt 0:01:25]} Rb8 {[%emt 0:02:18]} 27. Nd2 {[%emt 0:06:07]} g4 {[%emt 0:09:24]} 28. hxg4 {[%emt 0:05:12]} hxg4 {[%emt 0:00:17]} 29. Rxf7 {[%emt 0:04:45]} Qxf7 {[%emt 0:00:14]} 30. Qb3 {[%emt 0:00:36]} Qh5 {[%emt 0:08:13]} 31. Ra7 {[%emt 0:06:22]} g3 {[%emt 0:06:03]} 32. Bg1 {[%emt 0:00:47]} Kh8 {[%emt 0:07:31]} 33. c3 {[%emt 0:02:15]} Nh7 {[%emt 0:00:55]} 34. Qe6 {[%emt 0:05:38]} Ng5 {[%emt 0:00:35]} 35. Qe7 {[%emt 0:00:01]} Rg8 {[%emt 0:00:23]} 36. Rb7 {[%emt 0:03:12]} Qh1 {[%emt 0:00:39]} 37. Kf1 {[%emt 0:00:23]} Qh6 {[%emt 0:00:28]} 38. Ra7 {[%emt 0:01:41]} Nh3 {[%emt 0:00:24]} 39. gxh3 {[%emt 0:01:31]} Qxh3+ {[%emt 0:00:05]} 40. Ke1 {[%emt 0:00:06]} Qh1 {[%emt 0:00:07]} 41. Nf1 {[%emt 0:38:19]} g2 {[%emt 0:30:53]} 42. Qg5 {[%emt 0:00:15]} gxf1=Q+ {[%emt 0:00:00]} 43. Kxf1 {[%emt 0:00:00]} Qxf3+ {[%emt 0:00:00]} 44. Ke1 {[%emt 0:00:00]} Qh1 {[%emt 0:00:00]} 45. Rc7 {[%emt 0:00:00]} c4 {[%emt 0:00:00]} 46. Rxc6 {[%emt 0:00:00]} Bf8 {[%emt 0:00:00]} 47. Qf6+ {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 48. Qg5 {[%emt 0:00:00]} Bf8 {[%emt 0:00:00]} 49. Qf6+ {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Zhang, Xiaopeng"]
[Black "Krivonosov, Oleg"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2299"]
[BlackElo "2390"]
[Annotator "NA"]
[PlyCount "112"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} d5 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:02]} 4. g3 {[%emt 0:00:00]} Bb4+ {[%emt 0:00:08]} 5. Bd2 {[%emt 0:02:34]} Be7 {[%emt 0:00:10]} 6. Bg2 {[%emt 0:00:17]} O-O {[%emt 0:00:09]} 7. O-O {[%emt 0:01:52]} c6 {[%emt 0:00:41]} 8. b3 {[%emt 0:00:46]} Nbd7 {[%emt 0:00:27]} 9. Nc3 {[%emt 0:00:43]} b6 {[%emt 0:00:22]} 10. Qc2 {[%emt 0:00:21]} Bb7 {[%emt 0:00:15]} 11. Bf4 {[%emt 0:04:06]} Rc8 {[%emt 0:03:44]} 12. Rfd1 {[%emt 0:01:11]} c5 {[%emt 0:03:34]} 13. Nb5 {[%emt 0:06:38]} cxd4 {[%emt 0:02:21]} 14. Nd6 {[%emt 0:10:00]} Bxd6 {[%emt 0:03:51]} 15. Bxd6 {[%emt 0:00:52]} Re8 {[%emt 0:00:19]} 16. Nxd4 {[%emt 0:00:49]} Nc5 17. Bxc5 {[%emt 0:04:31]} bxc5 {[%emt 0:03:28]} 18. Nb5 {[%emt 0:03:11]} Qb6 {[%emt 0:05:29]} 19. e3 {[%emt 0:02:30]} Red8 {[%emt 0:02:50]} 20. Rd2 {[%emt 0:13:25]} Bc6 {[%emt 0:07:19]} 21. Nc3 {[%emt 0:04:19]} d4 {[%emt 0:04:55]} 22. exd4 {[%emt 0:01:38]} Bxg2 {[%emt 0:01:20]} 23. Kxg2 {[%emt 0:00:40]} cxd4 {[%emt 0:01:19]} 24. Ne4 {[%emt 0:02:14]} Qc6 {[%emt 0:04:18]} 25. Re1 {[%emt 0:01:18]} h6 {[%emt 0:11:37]} 26. f3 {[%emt 0:03:03]} Nd5 {[%emt 0:01:23]} 27. Qd1 {[%emt 0:00:34]} Ne7 {[%emt 0:04:14]} 28. Rxd4 {[%emt 0:00:27]} Qb6 {[%emt 0:00:18]} 29. Nd6 {[%emt 0:07:18]} Rc6 {[%emt 0:05:09]} 30. Nb5 {[%emt 0:00:12]} Rxd4 {[%emt 0:00:28]} 31. Qxd4 {[%emt 0:00:09]} Qxd4 {[%emt 0:00:32]} 32. Nxd4 {[%emt 0:00:05]} Rd6 {[%emt 0:00:06]} 33. Re4 {[%emt 0:02:15]} Kf8 {[%emt 0:00:42]} 34. c5 {[%emt 0:01:23]} Rd5 {[%emt 0:01:29]} 35. b4 {[%emt 0:00:14]} e5 {[%emt 0:02:39]} 36. Nb3 {[%emt 0:00:22]} f5 37. Rc4 {[%emt 0:00:59]} a6 {[%emt 0:02:57]} 38. Kf2 {[%emt 0:01:24]} Rd1 39. Rc1 {[%emt 0:02:07]} Rxc1 {[%emt 0:02:18]} 40. Nxc1 {[%emt 0:00:05]} Nd5 {[%emt 0:00:06]} 41. a3 {[%emt 0:30:49]} Ke7 {[%emt 0:30:38]} 42. Ke2 {[%emt 0:04:35]} g5 {[%emt 0:00:37]} 43. Kd3 {[%emt 0:01:04]} h5 {[%emt 0:00:15]} 44. Ne2 {[%emt 0:01:56]} g4 {[%emt 0:00:39]} 45. fxg4 {[%emt 0:07:59]} hxg4 {[%emt 0:00:09]} 46. Nc3 {[%emt 0:01:45]} Nf6 {[%emt 0:01:30]} 47. Ke3 {[%emt 0:00:30]} Kd7 {[%emt 0:00:20]} 48. Kd3 f4 {[%emt 0:01:54]} 49. gxf4 {[%emt 0:06:44]} exf4 {[%emt 0:00:09]} 50. Ne4 {[%emt 0:02:23]} Nh5 {[%emt 0:01:20]} 51. a4 {[%emt 0:00:00]} g3 {[%emt 0:00:00]} 52. hxg3 {[%emt 0:00:00]} fxg3 {[%emt 0:00:00]} 53. Ke3 {[%emt 0:00:00]} Kc6 {[%emt 0:00:00]} 54. Kf3 {[%emt 0:00:00]} g2 {[%emt 0:00:00]} 55. Kxg2 {[%emt 0:00:00]} Nf4+ {[%emt 0:00:00]} 56. Kf3 {[%emt 0:00:00]} Nd5 {[%emt 0:00:00]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Gomes, Mary Ann"]
[Black "Kacharava, Nikolozi"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2296"]
[BlackElo "2397"]
[Annotator "NA"]
[PlyCount "103"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 3. Bg2 {[%emt 0:00:00]} g6 {[%emt 0:00:30]} 4. b3 {[%emt 0:00:13]} Bg7 {[%emt 0:00:37]} 5. Bb2 {[%emt 0:00:07]} c5 {[%emt 0:00:24]} 6. e3 {[%emt 0:02:00]} Nc6 {[%emt 0:01:45]} 7. Ne5 {[%emt 0:03:39]} O-O {[%emt 0:06:46]} 8. O-O {[%emt 0:01:59]} Qc7 {[%emt 0:04:46]} 9. Nxc6 {[%emt 0:04:33]} bxc6 {[%emt 0:01:36]} 10. d3 {[%emt 0:00:53]} e5 {[%emt 0:02:21]} 11. c4 {[%emt 0:08:09]} d4 {[%emt 0:05:51]} 12. exd4 {[%emt 0:00:34]} cxd4 {[%emt 0:01:41]} 13. Ba3 {[%emt 0:08:08]} Re8 {[%emt 0:04:12]} 14. Nd2 {[%emt 0:01:04]} Rb8 {[%emt 0:11:01]} 15. b4 {[%emt 0:00:30]} Bg4 {[%emt 0:08:35]} 16. Qa4 {[%emt 0:12:36]} Be2 {[%emt 0:04:57]} 17. Qxc6 {[%emt 0:09:34]} Qxc6 {[%emt 0:01:37]} 18. Bxc6 {[%emt 0:00:07]} Re6 {[%emt 0:05:32]} 19. Rfe1 {[%emt 0:01:50]} Bxd3 {[%emt 0:00:18]} 20. b5 {[%emt 0:00:44]} a6 {[%emt 0:10:35]} 21. Nb3 {[%emt 0:08:07]} axb5 {[%emt 0:11:30]} 22. Bxb5 {[%emt 0:00:07]} Bc2 {[%emt 0:00:46]} 23. Nc5 {[%emt 0:02:03]} Reb6 {[%emt 0:00:28]} 24. Bb4 {[%emt 0:03:56]} Rxb5 {[%emt 0:02:30]} 25. cxb5 {[%emt 0:00:29]} Nd5 {[%emt 0:02:20]} 26. a3 {[%emt 0:03:21]} Rxb5 {[%emt 0:02:43]} 27. Rac1 {[%emt 0:04:41]} Nxb4 {[%emt 0:03:20]} 28. axb4 {[%emt 0:01:39]} d3 {[%emt 0:00:24]} 29. Rcd1 {[%emt 0:07:42]} Bxd1 {[%emt 0:02:25]} 30. Rxd1 {[%emt 0:00:06]} Rxb4 {[%emt 0:00:07]} 31. Rxd3 {[%emt 0:00:09]} Rb8 {[%emt 0:03:55]} 32. g4 {[%emt 0:00:09]} Rc8 {[%emt 0:01:21]} 33. Rd5 {[%emt 0:01:01]} f6 {[%emt 0:00:39]} 34. h4 {[%emt 0:02:28]} h6 {[%emt 0:00:51]} 35. Kg2 {[%emt 0:00:44]} Rc7 {[%emt 0:00:25]} 36. Kf3 {[%emt 0:06:04]} Kf7 {[%emt 0:00:15]} 37. Ke4 {[%emt 0:00:45]} Bf8 {[%emt 0:00:32]} 38. Rd7+ {[%emt 0:00:54]} Rxd7 {[%emt 0:00:03]} 39. Nxd7 {[%emt 0:00:05]} Ke7 {[%emt 0:00:42]} 40. Nc5 {[%emt 0:03:43]} Kd6 {[%emt 0:00:39]} 41. Nb7+ {[%emt 0:32:16]} Ke6 {[%emt 0:03:29]} 42. Nd8+ {[%emt 0:00:00]} Ke7 {[%emt 0:05:20]} 43. Nb7 {[%emt 0:00:00]} Kd7 {[%emt 0:06:40]} 44. h5 {[%emt 0:00:00]} gxh5 {[%emt 0:01:01]} 45. gxh5 {[%emt 0:00:00]} Bb4 {[%emt 0:00:44]} 46. Kf5 {[%emt 0:00:00]} Kc7 {[%emt 0:00:52]} 47. Kxf6 {[%emt 0:00:00]} Kxb7 {[%emt 0:00:31]} 48. Kxe5 {[%emt 0:00:00]} Kc6 {[%emt 0:00:08]} 49. f4 {[%emt 0:00:00]} Bc3+ {[%emt 0:00:23]} 50. Ke4 {[%emt 0:00:00]} Kd6 {[%emt 0:00:06]} 51. f5 {[%emt 0:00:00]} Ke7 {[%emt 0:00:04]} 52. f6+ {[%emt 0:00:00]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Chkhaidze, Nikoloz"]
[Black "Naumkin, Igor"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "2290"]
[BlackElo "2418"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,6,-12,0,-3,-1,7,-25,-29,-12,12,0,-3,-94,-15,-15,0,-46,-33,-52,-23,-39,-41,-42,-36,-68,-49,-62,-61,-54,-57,-69,-15,-55,-33,-45,-15,-98,-97,-107,-105,-163,-100,-565,-562,-580,-579,-584,-578,-1258,-1525,-1474,-1459]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Be2 Bb4 5. Nd5 Bc5 {LiveBook: 16 Games} (5... Nxd5 6. exd5 Nd4 7. Nxd4 exd4 8. O-O O-O 9. a3 Be7 10. d3 d6 11. Bg4 f5 12. Bf3 Bd7 {1-0 (29) Van Foreest,J (2631)-Postny,E (2575) Berlin 2018}) 6. c3 {C47: Scotch Four Knights and Four Knights with 4 g3} Nxe4 7. d4 exd4 8. cxd4 {[#] Qc2 is the strong threat.The position is equal.} (8. O-O {with more complications.} Ne7 9. Qc2 Nxd5 10. Qxe4+ Ne7 11. Qe5) 8... Be7 9. O-O Nf6 $146 ({Predecessor:} 9... O-O 10. Qd3 f5 11. Ne5 Nxe5 12. dxe5 d6 {0-1 (67) Petrosian,D (2394)-Iljiushenok,I (2470) Moscow 2016}) 10. Nxe7 Nxe7 11. d5 (11. Bg5 $11) 11... O-O ({Black should play} 11... Nexd5 $17 12. Bc4 Ne7) 12. d6 $11 cxd6 {[%cal Bc7d6,Bd6d5][%mdl 32]} 13. b3 d5 14. Bb2 Ng6 15. Nd4 d6 16. Rc1 Bd7 17. Bd3 Ne5 18. Bb1 Re8 19. Rc3 Ne4 20. Re3 Qh4 (20... Ng4 $15 21. Re2 Qg5) 21. f3 Nf6 22. Rfe1 a6 23. Nf5 (23. Ba3 $11) 23... Bxf5 $17 24. Bxf5 Qf4 25. Bb1 (25. Bh3 $17 {keeps fighting.}) 25... Re7 (25... Re6 $19 {Hoping for ...Neg4.} 26. Qd4 Qg5) 26. Kh1 $2 {[%mdl 8192]} (26. R3e2 $17 {is a better chance.}) 26... Neg4 $19 {Black is clearly winning.} 27. fxg4 Rxe3 28. Rf1 Qxg4 29. Qc1 Re2 {[%csl Ge2][%cal Rg4g2] [#]} 30. Rg1 Rc8 {Precision: White = 32%, Black = 52%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Serrano Salvador, Eduardo"]
[Black "Neuman, Petr"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2282"]
[BlackElo "2428"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,119,6,5,10,22,25,27,37,25,25,83,6,4,-9,47,33,43,25,87,85,81,74,75,83,78,75,71,60,140,139,141,140,140,122,98,91,91,50,45,45,37,35,42,11,102,90,90,90,91,91,101,101,101,103,137,137,137,137,137,132,163,162,261,261,261,261,261,261,261,261,271,261,261,261,611,261,261,261,473,458,325,148,1745,1753,1783,1710,1345,1272,1137,1013,759,261,5106,5106,2677,2255,2498,2490,1556,1913,1687,1590,1641,1454]} 1. d4 ({Predecessor:} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. c4 c6 6. cxd5 cxd5 7. Nc3 O-O {½-½ (39) Soysal,S (2404)-Petkov,V (2510) Kragujevac 2018}) 1... Nf6 2. Nf3 $146 (2. c4 g6 {½-½ (47) Wojtaszek,R (2727)-Carlsen,M (2839) Porto Carras 2018}) 2... g6 3. c4 Bg7 4. g3 c6 (4... O-O 5. Bg2 c6 6. Nc3 d5 7. cxd5 cxd5 {½-½ (47) Wojtaszek,R (2727)-Carlsen,M (2839) Porto Carras 2018}) 5. Nc3 d5 6. cxd5 cxd5 7. Ne5 O-O 8. Bg2 b6 9. O-O Bb7 10. Be3 {D79: Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5)} (10. Bf4 Nc6 11. Rc1 Rc8 12. Qd2 e6 13. Rc2 Nxe5 14. Bxe5 Ne8 15. Bxg7 Kxg7 16. Rfc1 Nd6 17. b3 Qf6 18. e3 Ba6 19. a4 {½-½ (47) Wojtaszek,R (2727)-Carlsen,M (2839) Porto Carras 2018}) 10... Ne4 ({Predecessor:} 10... e6 11. Rc1 Ne8 12. Qd2 f6 13. Nd3 Nd6 14. Bf4 Rf7 15. Bxd6 Qxd6 16. Nb5 Qd8 17. Nf4 Na6 18. Nxe6 {½-½ (39) Soysal,S (2404)-Petkov,V (2510) Kragujevac 2018}) 11. Rc1 e6 12. Nxe4 {White has an edge.} dxe4 13. Qc2 Qd5 (13... f5 $11) 14. b3 (14. f3 $1 $16 {[%cal Rf3e4]} Bxe5 15. dxe5 (15. fxe4 Qb5 $16)) 14... f6 $11 15. Nd3 $36 {[%mdl 2112] And now Nf4 would win. Pin. White has the initiative.} f5 ({Black should try} 15... Qd7 $11 16. Qc7 Rc8 17. Qxd7 Nxd7) 16. Nf4 $14 Qd7 17. Qc7 {Black must now prevent Qxd7.} Qxc7 (17... Bd5 $11 {remains equal.}) 18. Rxc7 $16 Bd5 19. Nxd5 exd5 20. Rfc1 Na6 21. Rd7 Rfd8 22. Rb7 Rdb8 (22... Rdc8 $14) 23. Rxb8+ $1 Rxb8 24. Bf4 Rb7 25. e3 Nb4 26. Bd6 Nd3 27. Rc8+ Kf7 28. Bf1 Ke6 29. Ba3 b5 30. Rc6+ (30. Bxd3 $5 exd3 31. Kf1 $14) 30... Kf7 (30... Kd7 $1 $11 {keeps the balance.} 31. Rd6+ {[%mdl 64] Double Attack} Kc8) 31. Bxd3 exd3 {[%mdl 4096] Endgame KRB-KRB} 32. Kf1 $1 b4 33. Bc1 Ke7 34. Ke1 Kd7 35. Rc5 Rc7 36. Rxc7+ ({Weaker is} 36. Rxd5+ Ke6 $17) 36... Kxc7 {KB-KB} 37. Kd2 g5 38. h3 ({Much less strong is} 38. Kxd3 g4 $14) 38... h5 39. f3 $1 ({Don't take} 39. Kxd3 $6 g4 $14) 39... g4 (39... Bf6 $142 40. Kxd3 Kd7) 40. fxg4 $18 fxg4 41. hxg4 hxg4 42. Kxd3 Kd7 43. e4 Ke6 44. Bg5 Bf8 45. Ke3 Bg7 $2 (45... Bd6 46. Bf4 Be7) 46. Bd8 (46. e5 $142) 46... Bh6+ 47. Kd3 Bc1 $2 (47... Kd7 {keeps fighting.} 48. Ba5 dxe4+ 49. Kxe4 Bf8) 48. Ba5 Ba3 49. e5 (49. Bc7 $18) 49... Kf5 $2 {[%mdl 8192]} (49... Ke7 $16 50. Bc7 Ke6) 50. Kc2 $1 Ke6 {[#]} 51. Bd8 $1 {[%cal Rd8g5]} Kf5 52. Bh4 Kg6 53. Be7 Kf5 54. Bc5 $2 (54. Kb1 Kg6 55. Bc5) 54... a6 $2 (54... Kg6 55. Bxa7 Kf7) 55. Bf8 {White is clearly winning.} Kg6 56. Kb1 Kg5 57. Bg7 Kg6 58. Bh8 Kf5 59. Kc2 Ke6 {[#]} 60. Bg7 $1 {Accuracy: White = 64%, Black = 39%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Csiki, Endre"]
[Black "Low, Zhen Yu Cyrus"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "2264"]
[BlackElo "2385"]
[Annotator "NA"]
[PlyCount "96"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} c6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} dxe4 {[%emt 0:00:00]} 4. Nxe4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nxf6+ {[%emt 0:00:00]} exf6 {[%emt 0:00:00]} 6. c3 {[%emt 0:00:21]} Bd6 {[%emt 0:00:02]} 7. Bd3 {[%emt 0:00:13]} O-O {[%emt 0:00:09]} 8. Qc2 {[%emt 0:00:11]} Re8+ {[%emt 0:00:08]} 9. Ne2 {[%emt 0:00:05]} h5 {[%emt 0:00:07]} 10. Be3 {[%emt 0:10:16]} Be6 {[%emt 0:05:10]} 11. c4 {[%emt 0:09:40]} a5 {[%emt 0:11:11]} 12. O-O {[%emt 0:02:59]} h4 {[%emt 0:02:32]} 13. Nc3 {[%emt 0:16:36]} Na6 {[%emt 0:21:07]} 14. Qe2 {[%emt 0:07:00]} f5 {[%emt 0:08:35]} 15. d5 {[%emt 0:08:59]} f4 {[%emt 0:04:51]} 16. dxe6 {[%emt 0:03:38]} Rxe6 {[%emt 0:00:39]} 17. Ne4 {[%emt 0:13:31]} fxe3 {[%emt 0:00:51]} 18. Rad1 {[%emt 0:01:47]} Qe7 {[%emt 0:15:03]} 19. Nxd6 {[%emt 0:03:47]} Rxd6 {[%emt 0:00:14]} 20. Qxe3 {[%emt 0:00:38]} Qxe3 {[%emt 0:00:34]} 21. fxe3 {[%emt 0:00:10]} Rad8 {[%emt 0:00:51]} 22. Bc2 {[%emt 0:00:43]} Kf8 {[%emt 0:08:15]} 23. Rxd6 {[%emt 0:02:03]} Rxd6 {[%emt 0:00:01]} 24. Rd1 {[%emt 0:00:16]} Rxd1+ {[%emt 0:01:09]} 25. Bxd1 {[%emt 0:00:06]} Ke7 {[%emt 0:00:04]} 26. Kf2 {[%emt 0:00:20]} Nb4 {[%emt 0:00:59]} 27. a3 {[%emt 0:04:02]} Nd3+ {[%emt 0:00:20]} 28. Ke2 {[%emt 0:00:42]} Nxb2 {[%emt 0:00:40]} 29. Bb3 {[%emt 0:00:55]} a4 {[%emt 0:00:47]} 30. Ba2 {[%emt 0:00:06]} Kd6 {[%emt 0:00:10]} 31. Kd2 {[%emt 0:00:05]} Kc5 {[%emt 0:00:09]} 32. Kc3 {[%emt 0:00:18]} Nd1+ {[%emt 0:00:02]} 33. Kd2 {[%emt 0:00:56]} Nf2 {[%emt 0:00:18]} 34. h3 {[%emt 0:02:01]} Ne4+ {[%emt 0:03:05]} 35. Kd3 {[%emt 0:00:05]} Nd6 {[%emt 0:00:04]} 36. Kc3 {[%emt 0:00:15]} f6 {[%emt 0:00:05]} 37. Kd3 {[%emt 0:00:47]} Nf7 {[%emt 0:02:31]} 38. Ke4 {[%emt 0:00:56]} Ne5 {[%emt 0:00:20]} 39. Kf5 {[%emt 0:00:06]} Nxc4 {[%emt 0:00:01]} 40. Kg6 {[%emt 0:00:18]} Nxe3 {[%emt 0:05:26]} 41. Kxg7 {[%emt 0:30:09]} Nxg2 {[%emt 0:30:01]} 42. Kxf6 {[%emt 0:00:17]} Nf4 {[%emt 0:00:06]} 43. Kg5 {[%emt 0:00:23]} Nxh3+ {[%emt 0:00:01]} 44. Kxh4 {[%emt 0:00:08]} Nf2 {[%emt 0:00:18]} 45. Kg3 {[%emt 0:00:05]} Ne4+ {[%emt 0:00:23]} 46. Kf3 {[%emt 0:00:06]} Nc3 {[%emt 0:00:05]} 47. Bg8 {[%emt 0:00:06]} Nb5 {[%emt 0:00:06]} 48. Ke3 {[%emt 0:00:05]} Nxa3 {[%emt 0:00:04] Kd4+} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Mis, Mieszko"]
[Black "Lin, Yi"]
[Result "1/2-1/2"]
[ECO "D71"]
[WhiteElo "2242"]
[BlackElo "2359"]
[Annotator "NA"]
[PlyCount "48"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:22]} c6 {[%emt 0:00:00]} 4. Bg2 {[%emt 0:00:38]} d5 {[%emt 0:00:00]} 5. Qa4 {[%emt 0:00:30]} Nfd7 {[%emt 0:01:55]} 6. cxd5 {[%emt 0:00:18]} Nb6 {[%emt 0:00:05]} 7. Qd1 {[%emt 0:00:37]} cxd5 {[%emt 0:00:06]} 8. Nc3 {[%emt 0:00:18]} Bg7 {[%emt 0:00:42]} 9. e3 {[%emt 0:01:19]} Nc6 {[%emt 0:01:21]} 10. Nge2 {[%emt 0:00:21]} O-O {[%emt 0:01:34]} 11. O-O {[%emt 0:00:41]} Bg4 {[%emt 0:13:51]} 12. h3 {[%emt 0:15:46]} Bxe2 {[%emt 0:00:08]} 13. Qxe2 {[%emt 0:00:04]} Rc8 {[%emt 0:00:45]} 14. Bd2 {[%emt 0:06:00]} e6 {[%emt 0:02:32]} 15. Rfc1 {[%emt 0:04:22]} Nc4 {[%emt 0:02:07]} 16. Be1 {[%emt 0:03:15]} Qd7 {[%emt 0:03:11]} 17. b3 {[%emt 0:04:45]} Nd6 {[%emt 0:00:17]} 18. Na4 {[%emt 0:02:05]} b6 {[%emt 0:06:50]} 19. Qd3 {[%emt 0:11:43]} Ne7 {[%emt 0:02:15]} 20. Bf1 {[%emt 0:04:03]} Rxc1 {[%emt 0:04:43]} 21. Rxc1 {[%emt 0:00:27]} Rc8 {[%emt 0:00:13]} 22. Rxc8+ {[%emt 0:02:26]} Ndxc8 {[%emt 0:05:07]} 23. Nc3 {[%emt 0:03:16]} Nc6 {[%emt 0:04:41]} 24. Qa6 {[%emt 0:06:18]} Nb8 {[%emt 0:03:14]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Kozak, Antoni"]
[Black "Liu, Guanchu"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2236"]
[BlackElo "2425"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,43,35,35,81,66,66,78,113,128,183,118,127,96,135,38,43,44,41,50,80,36,78,23,58,49,78,50]} 1. Nf3 f5 2. d4 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. Nbd2 d6 7. Re1 Ne4 8. Nxe4 {A81: Dutch Defence: 2 g3} fxe4 9. Ng5 d5 10. f3 {LiveBook: 6 Games. White is slightly better.} c5 $146 ({Predecessor:} 10... Nc6 11. c3 exf3 12. exf3 e5 13. dxe5 h6 14. Nh3 Nxe5 15. Nf4 c6 16. Rxe5 Bxe5 17. Nxg6 {½-½ (44) Andonovski,L (2282)-Andreikin,D (2723) Struga 2015}) 11. dxc5 h6 12. Nh3 Bxh3 13. Bxh3 Na6 {[#]} (13... Nc6 $16) 14. Be6+ (14. fxe4 $1 $18 d4 15. Qd3) 14... Kh7 $16 15. Bxd5 Nxc5 {[#]} 16. Bxe4 ({Don't take} 16. fxe4 $6 e6 $14) (16. c3 $1 $16) 16... Nxe4 $14 17. Qxd8 ({But not} 17. fxe4 Qb6+ 18. e3 (18. Kh1 $2 Rad8 $19) 18... Qe6 $11) 17... Raxd8 18. fxe4 Bd4+ 19. Kh1 g5 20. c3 ({Better is} 20. a4 $16) 20... Bb6 21. a4 a5 22. Rb1 {Accuracy: White = 48%, Black = 31%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Sindler, Michal"]
[Black "Gschnitzer, Oswald"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2221"]
[BlackElo "2370"]
[Annotator "NA"]
[PlyCount "109"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:09:33]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:05]} Nc6 {[%emt 0:00:00]} 3. Bb5 {[%emt 0:00:17]} d6 {[%emt 0:00:09]} 4. Bxc6+ {[%emt 0:00:17]} bxc6 {[%emt 0:00:04]} 5. O-O {[%emt 0:00:08]} Bg4 {[%emt 0:00:28]} 6. h3 {[%emt 0:01:12]} Bh5 {[%emt 0:00:13]} 7. c3 {[%emt 0:01:08]} Nf6 {[%emt 0:01:59]} 8. Re1 {[%emt 0:09:59]} e6 {[%emt 0:04:00]} 9. d4 {[%emt 0:07:41]} Nd7 {[%emt 0:05:01]} 10. Nbd2 {[%emt 0:12:26]} Be7 {[%emt 0:03:02]} 11. b3 {[%emt 0:09:16]} O-O {[%emt 0:05:37]} 12. Bb2 {[%emt 0:01:43]} d5 {[%emt 0:04:03]} 13. c4 {[%emt 0:04:05]} cxd4 {[%emt 0:12:39]} 14. g4 {[%emt 0:05:23]} Bg6 {[%emt 0:02:07]} 15. Nxd4 {[%emt 0:00:46]} Bc5 {[%emt 0:07:14]} 16. cxd5 {[%emt 0:03:28]} cxd5 {[%emt 0:00:45]} 17. exd5 {[%emt 0:00:47]} exd5 {[%emt 0:04:32]} 18. Qf3 {[%emt 0:05:16]} Nf6 {[%emt 0:11:30]} 19. Nf5 {[%emt 0:03:05]} d4 {[%emt 0:03:33]} 20. Re5 {[%emt 0:03:44]} Rc8 {[%emt 0:10:22]} 21. Nc4 {[%emt 0:01:26]} Re8 {[%emt 0:03:43]} 22. Rd1 {[%emt 0:01:52]} Rxe5 {[%emt 0:03:21]} 23. Nxe5 {[%emt 0:00:15]} Bxf5 {[%emt 0:01:10]} 24. Qxf5 {[%emt 0:00:42]} Rc7 {[%emt 0:02:07]} 25. Nf3 {[%emt 0:03:34]} g6 {[%emt 0:06:22]} 26. Qe5 {[%emt 0:00:49]} Bb6 {[%emt 0:03:54]} 27. Bxd4 {[%emt 0:01:22]} Bxd4 {[%emt 0:03:00]} 28. Rxd4 {[%emt 0:00:08]} Nd7 {[%emt 0:00:23]} 29. Qd6 {[%emt 0:00:46]} Qc8 {[%emt 0:00:32]} 30. Rf4 {[%emt 0:01:47]} Nf8 {[%emt 0:00:57]} 31. Qd5 {[%emt 0:01:31]} Rc1+ {[%emt 0:00:30]} 32. Kg2 {[%emt 0:00:06]} Ne6 {[%emt 0:00:09]} 33. Rc4 {[%emt 0:01:23]} Rxc4 {[%emt 0:00:46]} 34. Qxc4 {[%emt 0:00:07]} Qb7 {[%emt 0:00:32]} 35. Qc1 {[%emt 0:04:08]} g5 {[%emt 0:02:01]} 36. Qe3 {[%emt 0:00:10]} h6 {[%emt 0:00:16]} 37. h4 {[%emt 0:01:45]} Nf4+ {[%emt 0:00:26]} 38. Kh2 {[%emt 0:01:16]} Qc7 {[%emt 0:00:51]} 39. hxg5 {[%emt 0:00:53]} Ne6+ {[%emt 0:00:27]} 40. Kg1 {[%emt 0:00:59]} hxg5 {[%emt 0:00:41]} 41. Nxg5 {[%emt 0:31:38]} Nf4 {[%emt 0:02:40]} 42. Ne4 {[%emt 0:00:00]} Qe5 {[%emt 0:01:45]} 43. Ng3 {[%emt 0:00:00]} Qa1+ {[%emt 0:03:48]} 44. Kh2 {[%emt 0:00:00]} Qf6 {[%emt 0:02:20]} 45. Nf5 {[%emt 0:00:00]} Ne6 {[%emt 0:04:21]} 46. Qxa7 {[%emt 0:00:00]} Qe5+ {[%emt 0:01:27]} 47. Ng3 {[%emt 0:00:00]} Qf4 {[%emt 0:00:58]} 48. Qe3 {[%emt 0:00:00]} Qxg4 {[%emt 0:00:21]} 49. Qe4 {[%emt 0:00:00]} Qd1 {[%emt 0:06:05]} 50. Qe2 {[%emt 0:01:30]} Qd5 {[%emt 0:02:49]} 51. Qg4+ {[%emt 0:00:59]} Kf8 {[%emt 0:00:17]} 52. Qb4+ {[%emt 0:01:51]} Kg8 {[%emt 0:00:42]} 53. Qb8+ {[%emt 0:01:52]} Kg7 {[%emt 0:00:32]} 54. Qb4 {[%emt 0:00:22]} Qf3 {[%emt 0:00:38]} 55. Kg1 {[%emt 0:01:50]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.17"]
[Round "8"]
[White "Schnabel, Ralf"]
[Black "Szpar, Milosz"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "2206"]
[BlackElo "2339"]
[Annotator "NA"]
[PlyCount "76"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+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 0:00:14]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:15]} 5. Nc3 {[%emt 0:00:01]} e5 {[%emt 0:00:05]} 6. Ndb5 {[%emt 0:00:06]} d6 {[%emt 0:00:08]} 7. Nd5 {[%emt 0:00:50]} Nxd5 {[%emt 0:00:41]} 8. exd5 {[%emt 0:00:04]} Nb8 {[%emt 0:00:12]} 9. c4 {[%emt 0:00:22]} a6 {[%emt 0:00:21]} 10. Nc3 {[%emt 0:00:14]} Be7 {[%emt 0:00:23]} 11. Be2 {[%emt 0:00:20]} O-O {[%emt 0:00:24]} 12. O-O {[%emt 0:00:08]} f5 {[%emt 0:00:21]} 13. a3 {[%emt 0:00:28]} Nd7 {[%emt 0:06:01]} 14. b4 {[%emt 0:00:28]} a5 {[%emt 0:03:49]} 15. Bb2 {[%emt 0:05:07]} b6 {[%emt 0:24:03]} 16. Qb3 {[%emt 0:12:44]} Kh8 {[%emt 0:02:11]} 17. Rae1 {[%emt 0:11:21]} g5 {[%emt 0:02:09]} 18. g3 {[%emt 0:04:17]} Rf6 {[%emt 0:11:16]} 19. f4 {[%emt 0:20:57]} gxf4 {[%emt 0:04:12]} 20. gxf4 {[%emt 0:00:04]} Rh6 {[%emt 0:01:52]} 21. Bf3 {[%emt 0:08:11]} Bf6 {[%emt 0:03:20]} 22. Bg2 {[%emt 0:10:14]} Rg6 {[%emt 0:17:18]} 23. Re2 {[%emt 0:02:41]} exf4 {[%emt 0:01:44]} 24. Rxf4 {[%emt 0:02:53]} Ne5 {[%emt 0:00:23]} 25. Nb5 {[%emt 0:00:54]} axb4 {[%emt 0:03:07]} 26. axb4 {[%emt 0:00:06]} Rg5 {[%emt 0:02:02]} 27. Nd4 {[%emt 0:01:48]} Qc7 {[%emt 0:07:00]} 28. Nc6 {[%emt 0:08:49]} Bb7 {[%emt 0:00:28]} 29. Kf1 {[%emt 0:06:28]} Bxc6 {[%emt 0:02:07]} 30. dxc6 {[%emt 0:00:05]} Rag8 {[%emt 0:00:16]} 31. b5 {[%emt 0:01:19]} Qg7 {[%emt 0:01:04]} 32. Qc2 {[%emt 0:02:51]} Ng4 {[%emt 0:00:36]} 33. Bxf6 {[%emt 0:01:18]} Qxf6 {[%emt 0:00:23]} 34. Ke1 {[%emt 0:00:34]} Ra8 {[%emt 0:03:07]} 35. Qb3 {[%emt 0:01:04]} Qa1+ {[%emt 0:01:03]} 36. Kd2 {[%emt 0:00:38]} Ra2+ {[%emt 0:00:13]} 37. Qc2 {[%emt 0:00:01]} Rxc2+ {[%emt 0:01:30]} 38. Kxc2 {[%emt 0:00:02]} Ne3+ {[%emt 0:01:25]} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Xiang, Zeyu"]
[Black "Postny, Evgeny"]
[Result "1/2-1/2"]
[ECO "D20"]
[WhiteElo "2440"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "30"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,17,31,31]} 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 a6 6. a4 b6 {D26: Queen's Gambit Accepted: 4 e3 e6 5 Bxc5 c5 sidelines} 7. O-O Bb7 8. Qe2 c5 9. Rd1 {LiveBook: 18 Games} {Predecessor:} Qc7 $146 10. Nc3 Be7 11. Bd2 O-O 12. Rac1 Rd8 13. Bd3 Nc6 14. Ne4 Nxe4 15. Bxe4 a5 {½-½ (56) Sokolov,I (2646)-Edouard,R (2674) Linares 2014} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Frolov, Artur"]
[Black "Gomes, Mary Ann"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2430"]
[BlackElo "2296"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,131,12,2,39,33,25,0,0,0,0,0,6,0,6,14,27,0,0,0,37,0,0,0,0,0,0,0,0,0,0,-44,-44,-43,4,4,4,9,0,10,4,0,0,0,0,0,0,-10,8,0,25,22,72,57,81,34,33,23,23,26,31,14,13,5,36,6,24,10,6,15,37,37,37,0,439,435,418,580,580,580,431,580,580,580,576,575,563,556,508,485,1604,1366,4911,3304,1989,1727,29964,29965,29965,29962,29966,29967,29969,29970,29973,29972,29980,29981,29981,29982,29982,29983,29983,29984,29984,29985]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. Qd2 Nbd7 {[%cal Bb8d7,Bd7b6,Bb6c4,Bc4e3][%mdl 32]} 9. f3 b5 10. O-O-O Rc8 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} (10... h5 11. Nd5 Rc8 12. Qa5 Nxd5 13. exd5 Bf5 14. Bd3 Qxa5 15. Nxa5 g6 16. Kb1 Bh6 17. Bf2 Nf6 18. Rhe1 Bxd3 19. Rxd3 {½-½ (31) Brkic,A (2590)-Jakovenko,D (2746) Batumi 2018}) 11. g4 Nb6 12. Qf2 Nfd7 $1 {The position is equal.} 13. Nd5 Bxd5 14. exd5 Nc4 15. Kb1 Nxe3 16. Qxe3 Be7 17. h4 $146 ({Predecessor:} 17. Bd3 Nb6 18. Bf5 Rb8 {½-½ (39) Navarrete Espi,S (1804)-Moreno Ibanez,M (1922) Granada 2009}) 17... Bxh4 18. f4 $1 {Strongly threatening g5.} Be7 $1 19. Bd3 exf4 20. Qxf4 Ne5 21. Nd4 Bg5 $1 {[%cal Rg5f4]} ({Weaker is} 21... Nxd3 22. Rxd3 h6 23. Nc6 $18) 22. Qe4 g6 23. Nc6 Qf6 $1 24. Rhe1 {[%cal Rc6e5]} O-O $1 25. Nxe5 Qxe5 (25... Rce8 {keeps more tension.} 26. Nd7 Qd8 27. Nxf8 Rxe4 28. Rxe4 Kxf8 29. a4 bxa4 30. Rxa4 a5) 26. Qxe5 dxe5 27. Rxe5 Bf6 28. Re4 Rfd8 29. c4 bxc4 30. Bxc4 Rd6 31. b4 Bg5 32. Bb3 Rb8 33. Kc2 Rb7 34. a3 Rf6 35. Bc4 Rd6 36. Kb3 Kg7 37. Rde1 Bh4 38. R1e2 Bd8 39. Re8 {Bxa6! is the strong threat.} a5 40. b5 h6 41. R2e4 Kf6 42. Ka4 Bb6 43. Rh8 $36 {[%mdl 2048] White has good play.} Re7 44. Rxe7 Kxe7 $14 {[%mdl 4096] Endgame KRB-KRB} 45. Rb8 Rf6 $2 {[%mdl 8192]} (45... Bc7 $11 {and Black is okay.} 46. Rb7 Kd7) 46. Rxb6 $1 $18 Rxb6 47. Kxa5 {KR-KB} Rb8 {And now ...Kd6 would win.} 48. b6 Kd6 49. Kb5 h5 50. gxh5 gxh5 {Threatens to win with ...h4.} 51. a4 h4 52. Bf1 $1 Re8 53. a5 Re1 (53... Re5 $142 54. a6 Rxd5+ 55. Kb4 Rd4+ 56. Ka5 Rd1) 54. Bg2 Rb1+ {[#]} 55. Ka6 $1 {[%cal Ra6a7]} Rb2 56. b7 Kc7 {[#]} 57. d6+ $1 {[%mdl 512] White mates.} Kxd6 58. Ka7 Kc7 59. Ka8 h3 60. Bh1 h2 61. a6 {[%cal Ba5a6,Ba6a7][%mdl 32]} f5 62. a7 Rxb7 63. Bxb7 f4 64. Bf3 Kc8 65. Bh1 Kc7 66. Bb7 {Precision: White = 68%, Black = 54%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Liu, Guanchu"]
[Black "Serrano Salvador, Eduardo"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2425"]
[BlackElo "2282"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,50,24,24,13,15,0,8,0,21,-9,20,-7,-23,-75,-74,-60,-66,-81,-83,-75,-72,-108,-106,-396,-424,-402,-429,-424,-422,-466,-425,-416,-360]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qd2 Nf6 8. O-O-O Be7 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2} 9. f3 {[%cal Bf2f3,Bf3f4][%mdl 32]} b5 10. Kb1 h5 {LiveBook: 56 Games. White has an edge.} 11. Bf2 $146 ({Predecessor:} 11. Nxc6 dxc6 12. e5 Nd5 13. Nxd5 cxd5 14. f4 Bd7 15. g3 Rc8 16. Bg2 {1-0 (41) Motylev,A (2656)-Eljanov,P (2723) Yerevan 2014}) 11... Ne5 12. Bg3 h4 13. Bxe5 Qxe5 14. f4 Qc7 15. e5 b4 $1 {[%cal Rb4c3]} 16. exf6 (16. Na4 $11 {keeps the balance.} Nd5 17. Nf5) 16... bxc3 $17 17. fxg7 Rg8 18. Qxc3 Qxc3 19. bxc3 Rxg7 20. Kc1 Bb7 {[#] ...h3 is the strong threat.} 21. Kd2 $2 {[%mdl 8192]} (21. Rg1 $17) 21... h3 $19 {[%cal Bh4h3,Bh3g2][%mdl 32]} 22. Rg1 hxg2 23. Be2 O-O-O 24. Ke3 Rh8 25. Bf3 Rh3 {Precision: White = 13%, Black = 84%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Naumkin, Igor"]
[Black "Liu, Zhaoqi"]
[Result "1/2-1/2"]
[ECO "A73"]
[WhiteElo "2418"]
[BlackElo "2300"]
[Annotator "TA"]
[PlyCount "165"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,164,40,32,37,24,33,20,21,11,62,54,59,47,164,160,177,159,155,154,121,168,144,137,436,436,506,499,508,347,319,334,333,336,304,212,376,132,316,333,429,357,597,557,571,181,300,298,292,292,292,295,286,275,781,772,1013,47,56,42,48,20,20,20,20,20,20,20,20,20,20,20,20,20,24,8,8,8,8,8,8,8,35,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,0,0,8,0,8,8,8,8,8,8,8,8,8,8,8,0,8,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O 9. O-O Bg4 10. h3 Bxf3 11. Bxf3 a6 12. a4 Nbd7 13. Bf4 Ne8 14. Qd2 {LiveBook: 6 Games. A75: Modern Benoni: Classical: 9...a6 10 a4 Bg4} Qe7 (14... c4 15. Bg5 Bf6 16. Bh6 Ng7 17. Bd1 Nc5 18. a5 Rb8 19. Be3 Qc7 20. Na4 Nxe4 21. Qc2 Qxa5 {0-1 (47) Tonkov,B (2294)-Petrov,M (2488) Sunny Beach 2014}) 15. Rae1 $146 ({Predecessor:} 15. Rfe1 Nc7 16. Be2 Rfe8 17. Bf1 Qf8 18. Bh2 Bd4 19. Kh1 Nf6 20. Bd3 {½-½ (40) Rossolimo,N-Diez del Corral,J Leipzig 1960}) 15... Nc7 16. Be2 {White is slightly better.} Rab8 17. Bg5 f6 (17... Bf6 $11 18. Bh6 Rfe8) 18. Bh4 $14 b5 19. f4 $36 {[%mdl 2048] Black is under pressure.} Qf7 (19... Bh6 $14) 20. e5 dxe5 21. d6 {[%cal Bd5d6,Bd6d7][%mdl 32]} Ne6 {[#]} 22. fxe5 $1 (22. axb5 $6 Bh6 $11) 22... Nxe5 23. axb5 {And now Bg3 would win.} axb5 24. Bxb5 Qb7 $2 {[%mdl 8192]} (24... f5 $16) 25. d7 $18 Kh8 26. Qd6 g5 27. Bg3 Nf4 28. Bxf4 gxf4 29. Rxf4 Rg8 30. Re2 Ra8 $2 (30... Qb6 31. Rd2 Rgd8) 31. Kh2 $2 (31. Rxf6 $18 {is more deadly.} Qb8 32. Qxb8 Raxb8 33. Rf5 (33. Rxe5 Bxf6 34. Re8 Kg7 $16)) 31... Raf8 $2 (31... Qb8 $16 {was worth a try.} 32. Qxb8 Raxb8) 32. Kh1 f5 33. Qe6 Ng6 $2 (33... Qb8 {keeps fighting.} 34. Rf1 (34. Rxf5 Rxf5 35. Qxf5 Rf8 $16) 34... f4) 34. Rxf5 Bxc3 35. Bc6 $2 (35. bxc3 Qxb5 36. Rxf8 Rxf8 {[#]} 37. d8=Q $1 {[%mdl 576] Deflection, Decoy} Rxd8 38. Qf6+ {[%mdl 64] Double Attack} Kg8 39. Qxd8+ Kg7 40. Qc7+ Kh6 41. Re6) 35... Qb6 (35... Qb8 $142) 36. Rxf8 Nxf8 37. Qd6 Nxd7 {Hoping for ...Qa6.} 38. bxc3 ({Weaker is} 38. Qxd7 Qa6 $14) 38... Qb1+ 39. Kh2 Qf1 $2 (39... Qb8 40. Qxb8 Nxb8) 40. Bf3 ({Stronger than} 40. Bxd7 Qxe2 41. Bc6 Qe3 $11) 40... Qc1 41. Qxd7 $2 ({White should play} 41. Re7 $18 Rf8 42. Rxd7 Qf4+ 43. Qxf4 Rxf4 44. Bd5) 41... Qf4+ $14 42. Kg1 Qxf3 $1 {[%mdl 4096] Endgame KQR-KQR} 43. Qd2 {White wants to play c4.} (43. Qg7+ $5 Kxg7 44. gxf3 $14) 43... Qxh3 $1 44. Re5 c4 45. Re4 {Intending Qd4+ and mate.} Qd3 46. Qxd3 cxd3 $11 {KR-KR} 47. Rd4 Rc8 48. Rxd3 Kg7 49. Rf3 Ra8 50. c4 {[%cal Bc3c4,Bc4c5][%mdl 32]} Ra1+ 51. Rf1 Ra2 52. Rc1 Kf6 53. c5 Ke7 54. Kh2 Kd7 {The position is equal.} 55. c6+ Kc7 56. Kg3 Ra6 57. Rh1 Rxc6 58. Rxh7+ Kd8 59. Rf7 Ke8 60. Rf2 Ke7 61. Kh4 Rc8 62. g4 Rh8+ 63. Kg3 Rg8 64. Rf4 Ke6 65. Kh4 {With the idea g5.} Ke5 66. Rf5+ (66. Rb4 {with more complications.} Ke6 67. Rb5 Ra8 68. Rb7 Rg8 69. Rh7) 66... Ke6 $1 67. Kh5 Rh8+ $1 68. Kg5 Rg8+ $1 69. Kf4 Ra8 70. Kg3 Rg8 71. Kh4 Rh8+ 72. Rh5 Ra8 73. Rh7 {Threatens to win with Kh5.} Kf6 74. Kh5 Ra5+ 75. Kh6 {Black must now prevent Rb7.} Rg5 76. Rf7+ Kxf7 77. Kxg5 {White threatens Kh6 and mate. KP-K} Kg7 78. Kf5 {Threatening mate with Kg5.} Kf7 79. g5 {[%cal Bg4g5,Bg5g6,Bg6g7][%mdl 32]} Kg7 80. g6 Kg8 81. Kf6 {g7 would kill now.} Kf8 $2 {[%mdl 8192]} (81... Kh8 82. g7+ Kg8 83. Kg6) 82. g7+ Kg8 83. Kg6 {Accuracy: White = 61%, Black = 58%.} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Kacharava, Nikolozi"]
[Black "Kozak, Antoni"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2397"]
[BlackElo "2236"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,119,63,66,49,58,54,49,61,46,59,40,81,85,103,96,101,93,96,80,109,109,146,139,140,107,101,102,120,113,175,178,162,166,182,152,137,103,103,88,103,96,109,109,166,110,186,110,354,352,364,350,364,364,256,245,404,136,404,412,12797,12812,5189,4626,29955,29961,29956,29967,29972,29963,29969,29970,29970,29971,29970,29972,29972,29973,29982,29983,29983,29976,29976,29976,29977,29978,29980,29980,29989,29990,29992,29993,29994,29990]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 {[%cal Bd7d6,Bd6d5][%mdl 32]} 6. Be3 Nf6 7. f3 Be7 8. Qd2 d5 9. O-O-O O-O 10. Be2 dxe4 {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack} 11. Nxc6 bxc6 12. Qxd8 Bxd8 13. Nxe4 Nxe4 14. fxe4 Bb6 15. Bxb6 {LiveBook: 4 Games} axb6 16. a3 Ba6 17. Bxa6 Rxa6 $14 {[%mdl 4096] Endgame KRR-KRR} 18. Rd6 {[#]} b5 $146 19. Re1 e5 20. Re3 f5 21. exf5 Rxf5 22. Re6 Rf2 23. Rg3 ({Of course not} 23. R3xe5 $6 Rxg2 24. Rxb5 Rxa3 $11) 23... Kf7 24. Rxe5 Ra7 25. Rc5 Rf6 26. Rf3 Rxf3 27. gxf3 $16 {KR-KR} Rc7 28. b4 Ke8 (28... Ke6 $16) 29. c4 $1 $18 {[%cal Rc4b5]} bxc4 30. Rxc4 Kd7 31. Rh4 h6 32. Kb2 Kc8 33. Kc3 Rf7 34. f4 Ra7 35. Kb3 Rd7 (35... Rf7 $16 {was necessary.} 36. Rg4 Kc7) 36. Kc4 ({White should try} 36. Rg4 $18) 36... Kb7 (36... Rf7 $16 37. a4 Kb7) 37. a4 (37. f5 $1 $18) 37... Rd2 $2 (37... Rf7 $16 38. Kb3 Rf6) 38. Rg4 g5 {[#]} 39. h4 $1 ({Not} 39. fxg5 hxg5 40. Rxg5 Rc2+ 41. Kd4 Rd2+ 42. Kc3 Rxh2 $16) 39... gxf4 40. Rxf4 Rc2+ 41. Kb3 Rh2 $2 {[#]} (41... Rc1 {was worth a try.} 42. Rf7+ Kb6 43. a5+ Ka6) 42. a5 $2 (42. Rf7+ $1 $18 {is the precise move to win.} Ka6 43. Rf6 Rh3+ 44. Kc4 Rxh4+ 45. Kc5) 42... Ka6 $2 {[%mdl 8192]} (42... h5 $16 {is a better defense.} 43. Kc4 Rc2+ 44. Kd4 Rd2+ 45. Kc5 Rc2+ 46. Rc4 Rg2) 43. Rf6 Rxh4 (43... Kb5 $142 44. Rf5+ (44. Rxh6 Rh3+ 45. Kb2 c5 $18) 44... Ka6) 44. Rxc6+ Kb7 45. Rg6 h5 46. Rh6 {White mates.} Rg4 47. Rxh5 Rg7 48. Ka4 Ka7 49. Rh4 Rf7 50. b5 Rg7 51. Kb4 Rf7 52. a6 Rf1 53. Rh7+ Kb8 54. Ka5 Rf5 55. Rd7 Ka8 56. Kb6 {[%cal Rd7d8]} Rf8 57. Rd5 Rc8 58. Ka5 Rh8 59. b6 Kb8 60. a7+ {Accuracy: White = 60%, Black = 35%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Krivonosov, Oleg"]
[Black "Oboladze, Luka"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2390"]
[BlackElo "2295"]
[Annotator "TA"]
[PlyCount "141"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,141,41,46,44,69,45,52,49,66,32,42,43,68,66,75,11,38,43,40,32,50,47,42,17,15,18,27,16,12,0,0,0,19,34,42,39,31,49,27,0,35,31,47,41,56,66,202,202,189,171,171,127,285,239,255,255,259,259,259,247,247,247,255,240,240,240,240,259,248,240,240,92,240,137,240,137,240,240,240,236,312,240,229,228,613,580,639,589,29944,29946,29945,29947,29948,29949,29945,29946,29945,29946,29947,29949,29948,29950,29948,29947,6613,5608,29963,29965,29963,29965,29955,29958,29959,29959,29971,29972,6609,5604]} 1. Nf3 g6 2. c4 Bg7 3. e4 e5 4. d4 exd4 5. Nxd4 Ne7 6. Nc3 Nbc6 7. Be3 O-O 8. Be2 d6 9. O-O f5 10. Nxc6 Nxc6 11. exf5 Bxf5 12. Qd2 Qd7 13. Rad1 Qf7 {LiveBook: 9 Games} 14. Bf3 {A42: Modern Defence: Averbakh Variation} Kh8 15. Bd5 Qd7 16. b3 {White is slightly better.} Rae8 {[#]} 17. Bxc6 $146 ({Predecessor:} 17. Bh6 Nd8 18. Rfe1 a6 19. Bf3 Bxh6 20. Qxh6 Rxe1+ 21. Rxe1 Re8 22. Rxe8+ Qxe8 {1-0 (90) Aczel,G (2553)-Ostojic,N (2443) Palic 2017}) 17... bxc6 18. c5 Qe7 19. cxd6 cxd6 20. Bd4 (20. Rfe1 $16) 20... Bxd4 21. Qxd4+ {[%mdl 64] Double Attack} Qf6 22. h3 h5 23. Rd2 d5 24. Qxf6+ Rxf6 25. Rc1 Rfe6 26. Kf1 g5 27. Na4 g4 28. h4 Kg7 29. Nc5 R6e7 30. b4 Re5 31. Nb3 Bc8 32. Nc5 Bf5 33. g3 Bc8 34. a4 Bf5 35. Nb3 Rb8 (35... Rc8 $14) 36. Nd4 $18 Be4 37. Nxc6 Rc8 38. b5 (38. Nxe5 Rxc1+ 39. Ke2 Kf6 $11) 38... Bf3 $2 (38... Rf5 $16 39. Ra1 Rf7) 39. Rb1 Re4 40. Nd4 (40. Nxa7 $6 Rc7 $16) 40... Rc4 41. Nxf3 gxf3 {[%mdl 4096] Endgame KRR-KRR} 42. Rd3 Rxa4 43. Rxf3 ({Much less strong is} 43. Rxd5 $6 Reb4) 43... Rab4 44. Ra1 Re7 45. Rfa3 Kf6 46. Rxa7 Rxa7 47. Rxa7 Rxb5 {KR-KR} 48. Ke2 (48. Ra6+ $18 {and White stays clearly on top.} Kg7 49. Rd6) 48... Rb2+ (48... Ke5 $16) 49. Ke3 (49. Kf3 $18) 49... Rb3+ (49... Ke5 $16 {was necessary.}) 50. Kd4 (50. Kf4 $1 $18) 50... Rb2 (50... Rb4+ $16 51. Kxd5 Rb2) 51. Ra8 Kg7 {[#]} 52. Ke3 $1 Kf6 53. Rh8 Rb3+ 54. Kd4 Rb2 $2 (54... Kg6 55. Rf8 (55. Kxd5 Rf3 $14) 55... Rb5) 55. Rh6+ Kg7 56. Rxh5 Rxf2 57. Rxd5 Rf3 58. Rg5+ Kh6 59. Ke4 ({Weaker is} 59. g4 Rf4+ 60. Ke3 Ra4 $18) 59... Ra3 60. Kf4 Ra4+ 61. Kf3 Ra3+ 62. Kg4 Ra4+ {[#]} 63. Kh3 $1 Ra3 64. Re5 Kg6 65. h5+ {[%cal Bh4h5,Bh5h6][%mdl 32]} Kh6 66. Kh4 Ra1 67. Re6+ Kg7 68. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} Ra4 69. h6+ Kh7 70. Kh5 Ra5+ 71. g5 {Accuracy: White = 68%, Black = 41%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Zhang, Ziji"]
[Black "Wang, Yiye"]
[Result "1/2-1/2"]
[ECO "D14"]
[WhiteElo "2387"]
[BlackElo "2443"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,31,0,-7]} 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nc6 5. Nf3 Nf6 6. Bf4 Bf5 7. e3 e6 8. Bd3 Bxd3 9. Qxd3 Bd6 10. Bxd6 Qxd6 11. O-O O-O 12. Rfc1 Rfc8 13. Nb5 (13. h3 h6 14. Nd2 Nd7 15. Ne2 Ne7 {½-½ (15) Bu,X (2725)-Duda,J (2724) Liaocheng 2018}) 13... Qd8 14. Nc3 Qd6 $146 ({Predecessor:} 14... h6 15. h3 Rc7 16. Nb5 Rcc8 17. Nc3 Rc7 18. Nb5 {½-½ (18) Pushin,V (2349)-Smirnov,A (2405) Izhevsk 2013}) 15. Nb5 {D14: Slav Defence: Exchange variation with ...Bf5} Qd8 16. Nc3 {LiveBook: 3 Games} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Low, Zhen Yu Cyrus"]
[Black "Zhang, Xiaopeng"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2385"]
[BlackElo "2299"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,93,0,0,34,28,51,51,52,52,64,52,68,58,66,12,10,-6,-12,-18,-13,-8,13,13,11,0,3,16,22,0,11,0,35,40,99,88,93,80,157,164,162,165,251,243,303,293,285,268,268,262,264,271,264,271,272,245,259,268,258,239,304,313,477,289,468,283,293,289]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a6 7. Bb3 Ba7 8. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} O-O 9. h3 Be6 10. Bc2 h6 11. Re1 Re8 12. Nf1 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} d5 13. exd5 Nxd5 14. Ng3 Qd6 15. Nh4 {[#] LiveBook: 25 Games} Qf8 $146 ({Predecessor:} 15... Qd7 16. Qf3 Qe7 17. Nhf5 Qf8 18. Bb3 Rad8 19. Nh5 Bxf5 20. Qxf5 {½-½ (98) Giri,A (2778)-So,W (2767) Bilbao 2015}) 16. Nhf5 Nde7 17. Qh5 {[%cal Rf5h6] [#] Strongly threatening Nxh6+.} Nxf5 18. Nxf5 Bxf5 19. Qxf5 Qd6 20. Qe4 f5 21. Qc4+ (21. Qxf5 Rf8 $17) (21. Qe2 $14) 21... Kh8 $11 22. Be3 Bxe3 23. Rxe3 b5 24. Qh4 Rf8 25. Rae1 Rf6 $1 26. Qh5 Raf8 27. Qd1 Qc5 28. Qd2 Rg6 29. Bb3 e4 30. Qd1 (30. dxe4 f4 $17) 30... Rd8 (30... Qd6 $14) 31. Qh5 $16 Rg5 32. Qe2 $36 {[%mdl 2048] Black is under strong pressure.} Qf8 {[#]} (32... Rg6 $142) 33. f4 $1 {[%cal Rf4g5]} ({Don't play} 33. dxe4 $6 f4 $11) 33... exf3 34. Qxf3 f4 (34... Rg6 {might work better.} 35. Re6 Rxe6 36. Rxe6 Nb8) 35. Re6 Na5 36. Bc2 ({Not} 36. Rxa6 Nxb3 37. axb3 Rg3 $11) 36... Rg3 37. Qf2 Rg5 38. Rf1 Rf5 39. Rxa6 Nb7 40. d4 Rf7 41. Bg6 Rf6 42. Rxf6 Qxf6 43. Bb1 Rf8 44. Qc2 {[%csl Gb1][%cal Rc2h7]} Kg8 (44... g6 $142 45. Qxg6 Qxg6 46. Bxg6 Nd6) 45. Qh7+ $18 Kf7 46. Qe4 Nd6 47. Qxf4 {Precision: White = 64%, Black = 36%.} ({But not} 47. Qd5+ Ke7 $18) 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Gschnitzer, Oswald"]
[Black "Riha, Vojtech"]
[Result "1/2-1/2"]
[ECO "E61"]
[WhiteElo "2370"]
[BlackElo "2145"]
[Annotator "NA"]
[PlyCount "48"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:02]} d6 {[%emt 0:00:30]} 3. d4 {[%emt 0:00:13]} g6 {[%emt 0:00:19]} 4. Nc3 {[%emt 0:00:12]} Bg7 {[%emt 0:00:07]} 5. Bg5 {[%emt 0:00:47]} h6 {[%emt 0:04:50]} 6. Bh4 {[%emt 0:00:16]} Nbd7 {[%emt 0:02:50]} 7. e3 {[%emt 0:01:28]} O-O {[%emt 0:03:32]} 8. Qc2 {[%emt 0:01:51]} a6 {[%emt 0:03:25]} 9. Be2 {[%emt 0:00:34]} c6 {[%emt 0:04:09]} 10. O-O {[%emt 0:08:30]} b5 {[%emt 0:04:40]} 11. b4 $11 {[%emt 0:10:42] LiveBook: 3 Games} Nb6 {[%emt 0:09:33]} 12. c5 {[%emt 0:07:36]} Nc4 {[%emt 0:00:58]} 13. a4 {[%emt 0:14:14]} d5 {[%emt 0:04:36]} 14. Bxf6 {[%emt 0:07:33]} Bxf6 {[%emt 0:06:56]} 15. e4 {[%emt 0:03:43]} dxe4 {[%emt 0:09:15]} 16. Qxe4 {[%emt 0:00:36]} Bf5 {[%emt 0:10:16]} 17. Qxc6 {[%emt 0:05:09]} Bxd4 {[%emt 0:01:13]} 18. axb5 {[%emt 0:03:48]} Bxc3 {[%emt 0:01:17]} 19. Rad1 {[%emt 0:01:59]} Qc8 {[%emt 0:09:41]} 20. Qxc8 {[%emt 0:03:11]} Rfxc8 {[%emt 0:01:31]} 21. Bxc4 {[%emt 0:03:17]} axb5 {[%emt 0:00:48]} 22. Bxb5 {[%emt 0:00:28]} Bxb4 {[%emt 0:00:24]} 23. c6 {[%emt 0:00:19]} Ra5 {[%emt 0:00:15]} 24. Nd4 {[%emt 0:01:00]} Bc5 {[%emt 0:00:22]} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Gschnitzer, Adrian"]
[Black "Pechac, Jergus"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "2368"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,57,56,25,39,36,82,60,59,50,62,60,61,53,60,54,61,62,90,77,97,97,102,70,105,98,112,108,126,114,122,114,352,343,343,355,359,356,334,297,330,328,446,433,416,312,612,569,721,740]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bb4+ 5. c3 Be7 6. g3 {LiveBook: 11 Games. C45: Scotch Game} (6. Nxc6 bxc6 7. Bd3 d6 8. O-O Nf6 9. Re1 O-O 10. Nd2 Re8 11. Nf3 Nd7 12. Bf4 Nc5 13. Bc2 Bg4 14. h3 Bh5 15. Be3 Nd7 16. Ba4 c5 {0-1 (29) So,W (2810)-Carlsen,M (2822) Saint Louis 2017 CBM 180 [Mekhitarian,K]}) 6... h5 7. h3 b6 $146 ({Predecessor:} 7... Bf6 8. Bg2 Nge7 9. O-O Bxd4 10. cxd4 d5 11. Nc3 Be6 12. exd5 Nxd5 13. Re1 Kf8 {½-½ (73) Segovic,G (2191)-Zaja,I (2487) Bol 2013}) 8. Nxc6 {White is better.} dxc6 9. Qxd8+ Bxd8 10. Be3 a5 11. Nd2 a4 12. O-O-O Bb7 13. Bg2 {[%cal Bf1g2,Bg2h1,Bh1f3,Bf3e2,Be2b5][%mdl 32]} Ne7 14. f4 c5 15. Rhe1 Nc8 16. Bh1 Ne7 17. Bf3 Ra7 18. Nc4 Bc8 19. Ne5 {[#] Strongly threatening Rxd8+!} Be6 20. Be2 $36 {[%mdl 2048] f5 is the strong threat. White is in control.} Bxa2 $2 (20... c6 $16 {keeps fighting.}) 21. Bb5+ $18 c6 22. Nxc6 Nxc6 23. Bxc6+ Ke7 {[#]} 24. f5 $1 Bb3 25. Rd2 Bc7 26. Rd7+ Kf8 27. Kb1 g5 $2 (27... Kg8 28. Bf4 Bxf4 29. Rxa7 Bxg3) 28. Bxg5 Kg7 29. e5 {Precision: White = 71%, Black = 22%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Lin, Yi"]
[Black "Sindler, Michal"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2359"]
[BlackElo "2221"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,80,56,18,43,37,108,108,109,106,109,-20,-20,-31,-27,-41,0,-51,-47,-79,-64,-107,-101,-127,-106,-135,-95,-357,-123,-214,-88,-238,-238,-229,-235,-281,-241,-218,-131,-136,-18,-18,-18,-18,0,-632,-610,-712,-684,-640,29996,29997,29997,29998,29998,29999,29999]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Nf3 e5 7. d5 Na6 8. Be3 Nc5 9. Nd2 a5 10. g4 c6 11. Be2 Bd7 12. g5 {E92: King's Indian: Classical: 6 Be2 e5: 7 dxe5, 7 Be3 and Petrosian System without 7...Nbd7} (12. h4 cxd5 13. cxd5 Rc8 14. g5 Nh5 15. Bxc5 Rxc5 16. Bxh5 gxh5 17. Qxh5 b5 18. a4 bxa4 19. Qd1 Qc7 20. Nxa4 {0-1 (45) Grischuk,A (2751)-Naiditsch,A (2686) Novi Sad 2016}) 12... Ne8 13. h4 f5 14. f3 {LiveBook: 7 Games. White is slightly better.} Nc7 15. Nb3 N7a6 $146 (15... b6 $14) ({Predecessor:} 15... Nxb3 16. Qxb3 c5 17. a4 Qe7 18. Kd2 Na6 {½-½ (64) Votruba,P (2109)-Priborsky,I (2245) Bayern 2009}) 16. Nxc5 $16 Nxc5 17. Qd2 cxd5 18. cxd5 (18. Bxc5 $16 dxc5 19. Qxd5+ {[%mdl 64] Double Attack} Rf7 20. Qxc5) 18... Rc8 $11 19. Rc1 Qe8 20. O-O f4 21. Bf2 (21. Bxc5 $11 Rxc5 22. a4) 21... h6 $15 22. gxh6 Bxh6 23. Kg2 b5 24. Bd3 Rf7 25. Rg1 Rg7 26. Ne2 $2 {[%mdl 8192]} (26. Bxc5 $17 Rxc5 27. Rh1) 26... Nxd3 $2 (26... g5 $19 {and Black stays clearly on top. Strongly threatening ...Qh5.} 27. Bxc5 dxc5) 27. Qxd3 (27. Rxc8 $17 {might work better.} Qxc8 28. Qxd3) 27... g5 (27... Rxc1 $1 $19 {is more deadly.} 28. Nxc1 g5 29. hxg5 b4) 28. hxg5 {[#]} (28. Rxc8 $17 {is the only way for White.} gxh4+ 29. Kf1 Qxc8 30. Rxg7+ Bxg7 31. Bxh4) 28... Rxc1 $1 $19 ({Not} 28... Bxg5 29. Rxc8 Bf6+ 30. Kf1 $15) (28... Rxg5+ 29. Kf1 $17) 29. Nxc1 {[#]} b4 $1 $40 {[%mdl 128] Black is out for blood.} (29... Rxg5+ 30. Kf1 $17) 30. Ne2 Bb5 ({Weaker is} 30... Bxg5 31. Kf1 $17) 31. Qc2 Bxg5 {...Be7+ is the strong threat.} 32. Kf1 Qh5 ({Better is} 32... Qd7 $17 33. Rh1 Qc7) 33. Qc8+ $11 Kh7 34. Qf5+ Kh6 35. Ke1 $2 {[%mdl 8192]} ({But not} 35. a4 $2 bxa3 36. Qe6+ Kh7 $19) (35. Qc8 $11) 35... Qxf3 $19 {[%csl Gb5][%cal Rf3e2]} 36. Ng3 {Black must now prevent Qe6+.} Bd7 37. Qf8 {intending Nf5+.} Bh4 $4 {[%mdl 8192]} (37... Kh7 $19 38. Rh1+ Kg6 39. Qxd6+ Bf6 40. Rh6+ {[%mdl 64] Decoy} Kxh6 41. Qxf6+ Kh7 42. Qh4+ Kg6) 38. Nf5+ {[%mdl 64] Discovered Attack. White mates.} Bxf5 39. Qxg7+ Kh5 40. Qh8+ Bh7 41. Qxh7# {Accuracy: White = 36%, Black = 43%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Vojta, Tomas"]
[Black "Lalic, Bogdan"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2351"]
[BlackElo "2418"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,106,0,0,-37,-37,-44,-47,-30,-16,-16,-13,-7,0,-85,-83,-91,-102,-75,-72,-110,-109,-109,-108,-103,-110,-100,-95,-118,-107,-132,-139,-162,-163,-170,-159,-159,-157,-166,-166,-164,-152,-193,-187,-212,-205,-205,-181,-230,-214,-284,-284,-311,-305,-318,-318,-318,-318,-378,-373,-433,-383,-413,-411,-398,-389,-464,-487,-506,-497,-506,-496,-886,-468,-729,-747,-941,-912,-773,-720,-29977,-1893,-29978,-1701,-29981,-29982,-29975,-6440,-29970,-6597]} 1. d4 Nf6 2. c3 g6 3. Nf3 Bg7 4. Bg5 O-O 5. Nbd2 d5 6. e3 Nbd7 7. h3 c5 8. Bd3 b6 9. O-O Bb7 {D03: 1 d4 d5 2 Nf3 Nf6 3 Bg5, including Torre Attack with early ...d5} 10. Qb1 (10. a4 Re8 11. a5 c4 12. Bc2 b5 13. a6 Bc6 14. Re1 Qb6 15. Bxf6 Nxf6 16. Ne5 Nd7 {½-½ (57) Kramnik,V (2808)-Li,C (2746) Moscow 2016}) 10... Re8 {LiveBook: 6 Games} 11. Re1 $146 ({Predecessor:} 11. Bf4 Nh5 12. Bh2 e5 13. Bb5 e4 14. Ne1 Nhf6 15. a4 a6 16. Be2 Nf8 17. a5 {0-1 (39) Speelman,J (2507)-Bisby,D (2317) England 2018}) 11... e5 {Black is slightly better.} 12. e4 cxd4 13. cxd4 h6 14. Bxf6 Qxf6 15. Bb5 Bc6 (15... Red8 {with more complications.} 16. Bxd7 Rxd7 17. Nxe5 Rc7 18. exd5 Qd8) 16. dxe5 (16. Qd3 $1 $11) 16... Nxe5 $17 17. Bxc6 Qxc6 18. Nxe5 Bxe5 19. exd5 Qxd5 20. Nf3 Bf6 21. Qc2 {[#]} Kg7 $1 22. Red1 Qb5 23. Rd2 Rac8 24. Qd1 Rcd8 25. Rb1 Rxd2 26. Qxd2 Re2 27. Nd4 Rxd2 28. Nxb5 Bxb2 29. Nxa7 {[%mdl 4096] Endgame KRB-KRN} Bd4 30. a4 Bxf2+ 31. Kh1 {[#]} Rc2 $1 32. Nb5 f5 33. Ra1 h5 {[%cal Bh6h5,Bh5h4][%mdl 32]} 34. Rd1 h4 35. Rf1 Bg3 36. Na3 Rc3 37. Ra1 Be5 {aiming for ...Rb3.} 38. Re1 Kf6 (38... Rxa3 $2 39. Rxe5 Ra1+ 40. Kh2 $19) 39. Nb1 Rc4 40. Nd2 Rxa4 41. Nf3 Bg3 42. Rb1 Bf2 43. Kh2 g5 {[%cal Bg6g5,Bg5g4,Bg4g3][%mdl 32]} 44. Nd2 g4 45. Rf1 (45. Kh1 $142) 45... Kg6 46. Kh1 (46. Rb1 $142) 46... Be3 $19 47. Nb3 Rb4 48. Rb1 Kg5 49. Kh2 g3+ 50. Kh1 Kf4 (50... Rc4 $142 51. Na1 Rc3 52. Rd1 b5 53. Rb1 Kf6 54. Rf1 b4 55. Rd1 b3 56. Nxb3 Rxb3 57. Rd6+ Kg5 58. Rg6+ Kf4 59. Rb6 Rc3 60. Rb4+ Kg5 61. Rb1 Rc1+ 62. Rxc1 Bxc1 63. Kg1 Kf4 64. Kf1 Ke3 65. Ke1 f4 66. Kd1 Bd2 67. Kc2 Ke2 68. Kb3 Kf1 69. Kc2 Kxg2 70. Kb3 f3 71. Kc4 Kxh3 72. Kd4 g2 73. Kd5 g1=Q 74. Kc6 f2 75. Kc7 f1=Q 76. Kd7 Qd4+ 77. Ke8 Qf5 78. Ke7 Qdd7#) 51. Rf1+ Ke4 52. Rb1 f4 {[%cal Bf5f4,Bf4f3][%mdl 32]} 53. Rd1 f3 {Precision: White = 37%, Black = 87%.} ({Inferior is} 53... Rxb3 54. Rd4+ Bxd4 $11) 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Szpar, Milosz"]
[Black "Spiess, Gunter"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2339"]
[BlackElo "2414"]
[Annotator "TA"]
[PlyCount "32"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,16,42,24]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Nbd7 6. Nf3 Be7 7. Nxf6+ Bxf6 8. h4 h6 {LiveBook: 60 Games} {Predecessor:} 9. Be3 $146 c5 10. Qd2 cxd4 11. Nxd4 a6 12. O-O-O Bxh4 13. g4 Be7 14. g5 Nb6 15. gxh6 gxh6 16. Bg2 e5 {1-0 (36) Baklan,V (2614)-Nanu,C (2517) Cesme 2016} 1/2-1/2

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Mishuchkov, Nikolai M."]
[Black "Llopis de Aysa, Manuel"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2308"]
[BlackElo "2105"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,75,37,37,42,37,43,43,40,21,17,1,1,-10,-12,-12,17,0,22,0,1,0,10,3,5,0,0,0,0,0,22,22,22,35,31,38,41,36,35,24,36,17,33,41,97,73,77,73,119,133,185,193,172,108,127,127,317,318,494,477,716,694]} 1. d4 g6 2. Nf3 Bg7 3. e4 d6 4. Nc3 Nf6 5. Be2 O-O 6. O-O c6 7. h3 Qc7 8. Bf4 Nbd7 9. e5 {LiveBook: 21 Games} Nh5 {B08: Pirc Defence: Classical System} (9... dxe5 10. Nxe5 Nxe5 11. Bxe5 Qb6 12. Na4 Qd8 13. Bf3 Nd5 14. Re1 Nb6 15. Nc5 Bxe5 16. dxe5 a5 17. e6 Bxe6 18. Nxe6 Qxd1 19. Raxd1 fxe6 20. Rxe6 {1-0 (54) Shirov,A (2751)-Nikolic,P (2659) Monte Carlo 2000}) 10. exd6 exd6 11. Bh2 {aiming for Ne4.} Nhf6 {White is slightly better.} 12. Nd2 Re8 13. Nc4 $146 ({Predecessor:} 13. Bf3 Nb6 14. Nce4 Nxe4 15. Nxe4 Rd8 16. Re1 Bf5 17. c3 {1-0 (36) Borik,O (2400)-Mohrlok,D Germany West 1977}) 13... Bf8 14. Bd3 b5 15. Ne3 b4 16. Ne2 Nb6 17. c4 bxc3 18. Nxc3 Be6 19. Rc1 Qd7 20. Qc2 a5 21. Ne4 Nxe4 22. Bxe4 d5 23. Qxc6 Qxc6 24. Rxc6 {Threatens to win with Bf3.} dxe4 25. Rxb6 Red8 26. Be5 $36 {[%mdl 2048] White fights for an advantage.} Bxa2 27. Ng4 Bg7 28. Ra1 Be6 29. Nf6+ Kh8 (29... Bxf6 $1 $14 30. Bxf6 Rdc8) 30. g4 a4 31. Kg2 Bb3 32. Rc1 Rdc8 (32... Ba2 $16 33. Rc5 Be6) 33. Rxc8+ $18 Rxc8 {[#]} 34. Kg3 ({But not} 34. Nxe4 $6 Bd5 $14) ({White should try} 34. Rb5 $1 $18) 34... h6 35. h4 Rd8 $2 (35... Bxf6 $16 36. Bxf6+ (36. Rxf6 Kh7 $14) 36... Kh7) 36. g5 (36. Nxe4 Bxe5+ 37. dxe5 Ra8 $16) 36... h5 (36... Ra8 {might work better.} 37. Kf4 (37. Nxe4 Bxe5+ 38. dxe5 Kg7 $16) 37... Bxf6 38. Bxf6+ (38. Rxf6 Kg8 $16) 38... Kg8) 37. Kf4 Bd5 (37... Bc4 $142 38. Kxe4 Ra8) 38. Bc7 {Accuracy: White = 68%, Black = 36%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Kulkarni Bhakti"]
[Black "Vokac, Marek"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2303"]
[BlackElo "2380"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,105,-37,-47,-10,-16,-18,-36,8,12,32,0,127,172,156,132,167,96,172,146,193,235,255,228,241,283,309,252,275,238,374,309,366,358,441,403,487,467,468,459,447,389,434,437,410,360,443,408,384,214,454,368,343,158,304,299,307,297,401,359,373,396,501,496,503,462,532,443,423,222,511,276,554,541,773,757,2226,2123,2051,1316,1988,1368,29976,29977,29977,29978,29966,29970]} 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Qxd4 e6 6. Nf3 Nc6 7. Qe4 f5 8. exf6 Nxf6 9. Qh4 d5 10. Bd3 Bd6 11. Bg6+ {LiveBook: 18 Games. B22: Sicilian: 2 c3} Kd7 (11... Ke7 $5 {[%cal Rh7g6]} 12. Bc2 h6 $17) (11... Ke7 12. Bc2 h6 13. Nd4 g5 14. Qh3 e5 15. Nf5+ Kd7 16. Nxd6+ Kxd6 17. Qd3 Kc7 18. Na3 Be6 19. b4 e4 20. Qg3+ {1-0 (20) Makowski,T (2569)-Tritt,M (2572) ICCF email 2006}) 12. Bc2 h6 13. Be3 $146 {The position is equal.} ({Predecessor:} 13. Qa4 a6 14. Na3 Rb8 15. Bg6 b5 16. Qd1 Kc7 17. O-O e5 18. Nc2 Ne7 {½-½ (26) Gomez,F (2059)-Canizares Cuadra,P (2039) IECC email 2003}) 13... g5 14. Qa4 a6 15. Nd4 b5 {[#]} (15... Qb6 $11 {remains equal.} 16. b4 e5) 16. Nxb5 $1 $16 {[%mdl 512]} axb5 17. Qxa8 {Black must now prevent Na3.} Ne8 {Strongly threatening ...Nc7.} 18. b4 $1 Qf6 (18... Qc7 $16) 19. Qa3 Nc7 20. O-O Bb7 21. Nd2 Ra8 22. Qb3 $1 Be5 23. Rad1 Kc8 24. Nb1 Ne8 (24... Bd6 $142 25. Bb6 Ra6) 25. Rfe1 Nd6 26. Bd3 Kc7 27. Qc2 Rf8 28. a4 bxa4 29. b5 Na5 30. Bd4 Bxd4 31. cxd4+ Nac4 32. Rd2 Kd7 33. Bxc4 dxc4 34. Rde2 (34. Qxa4 $142 {And now Nc3 would win.} Bxg2 35. d5 (35. Kxg2 Qf3+ 36. Kg1 Qg4+ 37. Kh1 Qf3+ 38. Kg1 Qg4+ 39. Kh1 Qf3+ 40. Kg1 $11) 35... Bxd5 36. Qa7+ Kc8 37. Rxd5 $1 {[%mdl 512]} exd5 38. Re7 Qxf2+ 39. Qxf2 Rxf2 40. Kxf2) 34... Qxd4 $2 (34... Qf5 35. Qxf5 (35. Qxa4 Bxg2 {[%mdl 64] Decoy} 36. Kxg2 Qg4+ 37. Kf1 Qh3+ {[%mdl 64] Double Attack} 38. Kg1 Qg4+ {[%mdl 64] Double Attack} 39. Kf1 Qh3+ {[%mdl 64] Double Attack} 40. Kg1 Qg4+ {[%mdl 64] Double Attack} 41. Kf1 $11) 35... Rxf5 36. Rxe6 Rxb5) 35. Rxe6 Kc8 36. Qd2 (36. Qe2 $18 {Hoping for Rd1.} Ne4 37. Rc1 (37. Rxe4 Bxe4 38. Nc3 Bd3 $14)) 36... Nxb5 (36... Qxd2 $16 37. Nxd2 Rd8) 37. Qxd4 $18 (37. Rxh6 Qxd2 38. Nxd2 c3 $16) 37... Nxd4 38. Rxh6 Rd8 39. Nc3 a3 40. Rg6 Nb3 {If Black can now play ...Rd3 this consolidates a bit.} 41. Rxg5 Rd3 42. Rg3 Kd7 43. Rxd3+ cxd3 {[%mdl 4096] Endgame KRN-KBN} 44. f3 (44. Rb1 $142 Bd5 45. Nxd5) 44... Kc6 $2 (44... d2 45. Rb1 Bd5) 45. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Kc5 $2 (45... d2 {keeps fighting.} 46. Rb1 Kc5 47. Rxb3 {[%mdl 64] Double Attack} a2) 46. h5 d2 {[#]} 47. Rd1 $1 Ba6 48. Ne4+ {[%mdl 64] Double Attack} Kb4 49. Nxd2 Be2 50. Rb1 a2 51. Rxb3+ {White mates.} Ka4 {[#]} 52. Rb1 $3 axb1=Q+ 53. Nxb1 {Accuracy: White = 67%, Black = 18%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Ajay Krishna, S."]
[Black "Plischki, Sebastian"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2289"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,94,19,21,21,21,21,17,17,13,26,28,24,28,35,5,20,20,22,31,39,19,16,14,35,13,37,-38,21,-25,-18,-41,59,64,47,56,57,47,60,-33,-25,-51,-7,-36,-34,-77,-87,-266,-288,-252,-253,-861,-828,-1121,-1114,-735,-1148,-1006,-1136,-29987,-29988,-29990,-29991,-29991,-949,-954,-947,-4906,-4902,-4710,-4018,-5135,-5127,-29983,-29984,-29985,-29981,-29981,-29982,-29982,-29983,-29983,-29983]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 c6 6. O-O d6 7. d3 a6 8. Bd2 {LiveBook: 17 Games. A16: English Opening: 1...Nf6 with ...d5} (8. Rb1 b5 9. b4 bxc4 10. dxc4 Bf5 11. Rb3 Be6 12. Qd3 d5 13. cxd5 Nxd5 14. Nxd5 Qxd5 15. Bg5 Qxd3 16. Rxd3 Bxa2 17. Bxe7 {½-½ (29) Kveinys,A (2524)-Berkes,F (2649) Cappelle-la-Grande 2016}) 8... Re8 9. Rc1 e5 10. b4 {The position is equal.} d5 11. Bg5 $146 ({Predecessor:} 11. cxd5 cxd5 12. Na4 Nc6 13. a3 h6 14. h3 e4 15. Ne1 Bf5 16. Nc5 Qe7 17. Bc3 Rad8 18. Ba1 Nb8 {½-½ (18) Machlowski,S (2112)-Karlik,V (2222) Czech Republic 2017}) 11... h6 12. Bxf6 $1 Bxf6 13. cxd5 cxd5 14. e4 d4 15. Nd5 {[#] Rxc8! is the strong threat.} Nc6 16. Nd2 Be6 17. a3 Bg7 18. Nc4 h5 19. Qd2 Rb8 20. a4 (20. Ncb6 $14) 20... Kh7 (20... Bxd5 $15 21. exd5 Ne7) 21. f4 exf4 22. Qxf4 Bh6 ({Black should try} 22... Bxd5 $15 23. exd5 Nxb4) 23. Nf6+ $14 Kg7 24. Nxe8+ Qxe8 25. Qf6+ Kg8 26. Rb1 ({Of course not} 26. Nd6 Be3+ 27. Kh1 Qd7 $11) (26. b5 $1 $14 Bxc1 27. Rxc1 (27. bxc6 Be3+ 28. Nxe3 dxe3 $15)) 26... Bxc4 27. dxc4 Ne5 (27... Bg7 $5 {[%cal Rg7f6]} 28. Qf3 Ne5 $11) 28. c5 d3 {[%mdl 1024] Black has compensation.} 29. h3 Bg7 30. Qd6 $2 (30. Qf2 $17 {is a better defense.}) 30... Rd8 $19 31. Qb6 Qe7 32. b5 $2 (32. Kh1 Nc4 33. Qa7) 32... Nc4 33. Qa7 Bd4+ 34. Kh2 Bxc5 35. b6 Ne5 36. Rf6 Qxf6 37. Qxb7 d2 38. Qc7 Qd6 (38... d1=Q $142 39. Rxd1 Rxd1 40. Qb8+ Kh7 41. Qg8+ Kxg8 42. b7 Bg1+ 43. Kh1 Bf2+ 44. Kh2 {[#]} Bxg3+ $1 {[%mdl 512]} 45. Kxg3 h4+ 46. Kh2 Qf4#) 39. Qxd6 Bxd6 40. b7 Bb8 41. Rd1 Nc4 42. Bf3 h4 {[%cal Bh5h4,Bh4g3][%mdl 32]} 43. Be2 hxg3+ {Black mates.} 44. Kh1 Ne3 45. Rb1 d1=Q+ 46. Bxd1 Rxd1+ 47. Rxd1 Nxd1 {Precision: White = 36%, Black = 64%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Qiu, Mengjie"]
[Black "Moreto Quintana, Alex"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "2247"]
[BlackElo "2101"]
[Annotator "TA"]
[PlyCount "179"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,179,39,0,0,0,0,0,0,0,0,0,0,0,0,0,75,75,197,186,205,170,216,221,221,218,206,189,204,206,206,183,592,589,581,545,669,647,741,647,635,611,757,724,577,0,602,445,425,98,98,98,113,114,126,97,100,75,59,74,59,27,84,84,136,87,310,123,80,74,181,177,180,180,180,180,180,173,180,180,316,173,173,173,171,159,913,902,860,835,670,158,158,157,150,133,164,164,617,585,4145,4145,29968,4145,29967,29968,29967,4145,4145,4145,29987,29970,29974,29970,29970,29971,29972,29973,29972,29974,29975,29976,29977,29978,29977,29977,29981,29977,29977,29977,29976,29977,29968,4145,4145,4145,29984,29982,29985,29986,29986,29987,29987,29986,29986,29987,29988,29989,29989,29990,29991,29991,29991,29992,29992,29993,29993,29994]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. d4 cxd4 7. Nxd4 Nf6 8. Nc3 Nxd4 9. Qxd4 g6 10. f3 Bg7 11. Be3 {B52: Sicilian: Moscow Variation with 3...Bd7} (11. O-O O-O 12. Qd3 Rac8 13. Be3 a6 14. Rac1 Rc6 15. b3 e6 16. Rfd1 Qe7 17. Bf4 Rd8 18. a4 Qc7 19. Kh1 Nd7 20. Ne2 Ne5 21. Qd2 Qb8 {1-0 (48) Rozentalis,E (2567)-Brkic,A (2579) Austria 2017}) 11... O-O 12. Qd3 Rfc8 13. Rc1 {LiveBook: 3 Games. White is slightly better.} a6 14. O-O b5 15. cxb5 axb5 16. Qxb5 Qxb5 17. Nxb5 Rcb8 18. Na7 $146 ({Predecessor:} 18. Nc7 Rxa2 {½-½ (36) Fischer,M (2270)-Scheipl,R (2265) Regensburg 1997}) 18... Rxb2 19. Rf2 Rxf2 (19... Rb7 $11) 20. Kxf2 $16 e6 (20... Ne8 $16) 21. a4 $18 d5 22. a5 dxe4 23. Rc8+ Rxc8 24. Nxc8 {[%mdl 4096] Endgame KBN-KBN} Nd5 25. a6 ({Don't take} 25. fxe4 $6 Nc7 $16) 25... Nc7 26. a7 exf3 27. Kxf3 Na8 $2 (27... f5 28. Bc5 Bf8) 28. Nb6 Nc7 29. Ke4 f5+ 30. Kd3 Be5 31. h3 Kf7 32. Kc4 Bd6 33. Bc5 Bg3 34. Be3 Bd6 $1 35. Bg5 {[#] Strongly threatening Bd8.} Ke8 36. a8=Q+ $2 (36. Bh6 $18 {has better winning chances.}) 36... Nxa8 $16 37. Nxa8 Kf7 38. Nb6 Kg7 39. Nc8 Bg3 40. Ne7 h6 41. Bd2 g5 42. Bc3+ Kf7 43. Nc6 h5 ({Better is} 43... Kg6) 44. Kd3 Kg6 $2 {[#]} (44... g4 $16 {was called for.}) 45. Ke3 $2 (45. Be5 $1 $18 {[%cal Re5g3] is the precise move to win.} Bxe5 46. Nxe5+ Kg7 47. Ke3) 45... Bf4+ 46. Kf3 h4 (46... Bc7 $16 {was necessary.}) 47. Ne5+ Kh5 48. Nd3 Bc7 49. Be5 Bb6 50. Bd6 Kg6 51. Ne5+ Kh5 (51... Kg7 {is a better defense.} 52. Nc6 Kh6) 52. Be7 (52. Nd7 $142 Bd4 53. Be5 g4+ 54. Ke2) 52... Ba5 53. Ke3 Bb6+ 54. Kd3 {And now Nf3 would win.} Ba7 $2 (54... g4 $16 55. Nd7 Bf2) 55. Nc6 $18 Bf2 56. Nd4 Kg6 57. Nf3 $2 (57. Nxe6 $18 g4 58. Nf4+ Kh7 59. Bg5) 57... g4 $16 58. Ne5+ ({Stronger than} 58. Bxh4 Bxh4 59. Nxh4+ Kg5 $11) ({Inferior is} 58. Nxh4+ Kh5 $11) 58... Kh5 59. Ke2 Bd4 60. Nd3 {Hoping for Nf4+.} e5 $2 (60... gxh3 61. gxh3 Kg6 62. Bxh4 e5) 61. Bf6 $18 gxh3 62. gxh3 Bb6 63. Bxe5 (63. Nxe5 $142 Bg1 64. Kf3 Bh2 65. Nd3 Kh6 66. Bxh4 Kg7 67. Bg3 Bg1 68. Nf2) 63... Bd8 64. Nf4+ Kh6 65. Kf3 (65. Nd5 $142 Kh5 66. Kf3 Bg5 67. Bd4 Bc1 68. Ne7 Bh6 69. Nxf5 Bc1 70. Be3) 65... Be7 66. Nd5 Kh5 67. Bf6 Bc5 68. Nf4+ Kh6 69. Bxh4 Bb4 70. Nd5 Bd2 71. Ne7 Bc1 72. Nxf5+ Kg6 73. Kg4 Bd2 74. Bf2 Bg5 75. Bc5 Bf6 76. Be7 Bc3 77. h4 Kf7 78. Bc5 (78. h5 $142 Bb2 79. Bg5 Bh8 80. Ne3 Ke6 81. h6 Be5 82. Kh5 Bd6 83. Kg6) 78... Bf6 79. h5 Bd8 80. Bd4 {White mates.} Ba5 81. Nd6+ Kg8 82. Ne4 Kh7 83. Kg5 Bd8+ 84. Nf6+ Kg7 85. h6+ {[%cal Bh5h6,Bh6h7][%mdl 32]} Kf7 86. Kf5 Be7 87. Ne4 Bf8 88. h7 Bg7 89. Ng5+ Kf8 90. Ne6+ {Precision: White = 50%, Black = 33%.} 1-0

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Chudinovskikh, Alexander M"]
[Black "Roeder, Matthias"]
[Result "0-1"]
[ECO "B96"]
[WhiteElo "2184"]
[BlackElo "2396"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,87,-80,-89,-74,-81,-91,-81,-90,-55,-75,-79,-433,-109,-118,-104,-229,-177,-166,-157,-287,-286,-488,-491,-476,-467,-451,-443,-437,-332,-310,-312,-309,-303,-312,-325,-284,-268,-256,-236,-287,-178,-455,-431,-546,-528,-589,-576,-580,-507,-715,-701,-703,-703,-701,-690,-697,-678,-682,-649,-586,-591,-776,-754,-744,-737,-699,-681,-681]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bh4 Qb6 9. Qd2 {B96: Sicilian Najdorf: 6 Bg5 e6 7 f4, lines other than 7...Qb6 and 7...Be7} (9. a3 Be7 10. Bf2 Qc7 11. Qf3 Nbd7 12. O-O-O b5 13. g4 Bb7 14. h4 Nc5 15. Bd3 h5 16. g5 Ng4 17. Rhg1 {½-½ (25) Grischuk,A (2766)-Vachier Lagrave,M (2779) Saint Louis 2018}) 9... Qxb2 10. Nb3 Be7 11. e5 dxe5 {[#] LiveBook: 3 Games. ...Bb4 is the strong threat.} 12. Bxf6 Bxf6 ({Avoid the trap} 12... gxf6 $2 13. Na4 $18) 13. Na4 Qa3 14. Nb6 O-O 15. Nxa8 {aiming for Rd1.} Rd8 16. Qf2 $146 {[%mdl 8192]} (16. Qe2 $17 exf4 17. Rd1) ({Predecessor:} 16. Qa5 Qxa5+ 17. Nxa5 exf4 {1-0 (65) Weichhold,P (2428)-Sadzikowski,D (2548) Poland 2017}) 16... exf4 $2 (16... Qb4+ $19 {is more deadly.} 17. Nd2 e4) 17. Rd1 $17 Qb4+ {[%mdl 1024] Black has strong compensation.} 18. Nd2 (18. Rd2 $17) 18... Bc3 {Threatens to win with ...Rxd2.} 19. Bd3 Nc6 20. Kf1 (20. Qb6 $17 e5 21. Qxb4 Nxb4 22. Nb6) 20... e5 $19 21. Ne4 $2 {[#]} (21. Rb1 {might work better.} Qa4 22. Rb3 Bxd2 23. Qxd2) 21... Qxe4 $1 {[%mdl 512]} 22. Bxe4 Rxd1+ 23. Ke2 Bg4+ 24. Bf3 Rd2+ 25. Kf1 {And now Qxd2! would win.} Rxf2+ 26. Kxf2 Bf5 27. Rb1 e4 ({Don't play} 27... Bxc2 28. Rxb7 e4 29. Be2 $19) 28. Bd1 b5 {Hoping for ...Be6.} 29. Nc7 g5 {[%cal Bg7g5,Bg5g4][%mdl 32]} 30. Nxa6 Nd4 {Strongly threatening ...e3+.} 31. Nb4 $2 (31. Nc7) 31... Be6 {Black is clearly winning.} 32. a3 g4 33. Be2 e3+ 34. Kf1 Kf8 35. Nd3 f3 36. gxf3 gxf3 37. Bxf3 Nxf3 38. Ke2 Nd4+ 39. Kxe3 Nxc2+ 40. Ke4 Nxa3 41. Rc1 b4 42. Nc5 f5+ 43. Kd3 Bc4+ 44. Ke3 {Precision: White = 37%, Black = 77%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Vechet, Stanislav"]
[Black "Cerveny, Petr"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2114"]
[BlackElo "2318"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,86,66,77,47,56,57,72,53,101,102,92,77,101,76,154,129,164,67,79,58,84,56,68,0,93,0,39,0,70,67,95,51,42,0,0,0,0,0,0,0,0,-29,-27,-77,-68,-63,-29,-50,-56,-87,-80,-116,-99,-123,-65,-73,-39,-135,-6,-7,-6,-85,-121,-188,-177,-191,-195,-179,-174,-138,-139,-129,-141,-29979,-11757,-29983,-29977]} 1. d4 Nf6 2. g3 c5 3. d5 d6 4. c4 e5 5. Nc3 g6 6. e4 Bg7 {LiveBook: 56 Games} 7. h3 {A56: Czech Benoni} (7. Bg2 O-O 8. Nge2 a6 9. a4 b6 10. O-O Ra7 11. a5 bxa5 12. Bd2 Rb7 13. Qc2 Nh5 14. f3 f5 15. exf5 {½-½ (15) Rausis,I (2510)-Volodin,A (2564) Bayerisch Eisenstein 2012}) 7... O-O 8. Be3 $146 ({Predecessor:} 8. Bg2 a6 9. Nge2 Ne8 10. O-O b6 11. Rb1 Nd7 12. Be3 f5 13. Qc2 Ra7 14. b4 Ndf6 {0-1 (37) Sanna,G (2315)-Sygulski,A (2420) Thessaloniki 1984}) 8... Ne8 9. g4 {White is better.} f5 10. gxf5 gxf5 11. exf5 Bxf5 12. Nge2 Qh4 ({Black should play} 12... Nd7) 13. Ng3 $16 Bg6 14. Qd2 (14. Qg4 $18 Qxg4 15. hxg4) 14... Nd7 $14 15. O-O-O a6 16. Bg5 Qd4 17. Be3 (17. h4 $5 {[%cal Rh4h5]}) 17... Qh4 $1 18. Bg5 (18. Rg1 $16) 18... Qd4 19. Be3 Qxd2+ (19... Qh4 $1 $11) 20. Kxd2 (20. Rxd2 {looks sharper.} Ndf6 21. h4 Nh5 22. Nxh5 Bxh5 23. Be2) 20... Ndf6 21. Bd3 b5 22. a3 Rb8 {[%cal Ba8b8,Bb8b5,Bb5b3][%mdl 32]} 23. Bxg6 hxg6 24. cxb5 Nc7 25. Kc2 {aiming for bxa6.} Nxb5 26. Nxb5 (26. Nge4 {keeps more tension.} Nd4+ 27. Kb1 Rb6 28. h4 Rfb8 29. Rd2) 26... Rxb5 27. Rd2 Rfb8 28. Kc1 Kh7 29. Rhd1 Bh6 30. Bxh6 Kxh6 31. Rc2 Rb3 $36 {[%mdl 2048] Black is on the roll.} 32. Rdd2 {[#]} Kg5 (32... Rf3 $1 $17 33. Rc4 Kg7) 33. Rc4 $15 Rh8 {Strongly threatening ...Rh4.} 34. Kc2 (34. Ra4 $15) 34... Rb6 (34... Rf3 $17 35. Ra4 Rxh3) 35. Rd3 $11 Rh4 36. b3 (36. Rxh4 $11 Kxh4 37. Nf1) 36... Rd4 $17 37. Rdxd4 (37. h4+ $17 Rxh4 38. Rxh4 Kxh4 39. Nf1) 37... cxd4 $19 ({But not} 37... exd4 38. b4 $17) 38. Rc6 Nxd5 39. Rxb6 Nxb6 $17 {KN-KN} 40. Ne4+ Kf4 41. Nxd6 Kf3 42. Nc4 $2 {[%mdl 8192] [#]} (42. Kd3 $17) 42... Nxc4 43. bxc4 Ke2 {Precision: White = 27%, Black = 45%.} 0-1

[Event "18th Prague Open-A 2019"]
[Site "Prague"]
[Date "2019.01.18"]
[Round "9"]
[White "Roques, Olivier"]
[Black "Olsarova, Karolina"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "2001"]
[BlackElo "2263"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,106,48,47,61,81,78,77,75,82,52,47,39,76,15,85,-19,-16,-23,-16,-64,-55,-62,-65,-70,-55,-114,-114,-111,-49,-53,-56,-56,-56,-55,-58,-58,-20,-21,-25,-24,-4,-11,0,-122,-62,-238,-227,-246,-268,-275,-271,-441,-431,-654,-641,-639,-589,-565,-554,-1391,-293,-1284,-1414,-1231,-1130,-4121,-3844,-29963,-29962,-29965,-10763,-5923,-8291,-4627,-5093,-29967,-7695,-29960,-960,-29968,-6539,-29988,-29989,-29991,-29992]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Bg4 10. Be2 Bxf3 11. gxf3 Qh4+ 12. Bf2 Qf4 13. c5 {B03: Alekhine's Defence: Four Pawns Attack} Nd5 14. Nxd5 exd5 15. Qd2 {White is better.} Qf5 (15... Qxd2+ 16. Kxd2 g6 17. f4 Bh6 18. Be3 f6 19. h4 O-O 20. h5 fxe5 21. fxe5 Bxe3+ 22. Kxe3 {1-0 (55) Onischuk,V (2591)-Kovalenko,I (2643) Khanty-Mansiysk 2013}) 16. Rg1 g6 17. b4 $146 ({Predecessor:} 17. Be3 Qe6 18. f4 Ne7 19. Qb4 O-O-O 20. a4 Kb8 {½-½ (70) Chrzaszcz,M (2048)-Cherepov,A (2156) Bialystok 2017}) 17... Bg7 18. b5 ({White should try} 18. f4 $16) 18... Nd8 (18... Ne7 $11 {keeps the balance.}) 19. Qd3 (19. Be3 $16) 19... Qxd3 $1 $11 20. Bxd3 Ne6 21. Be3 f6 22. f4 {Threatens to win with f5.} Bh6 $1 23. exf6 Bxf4 24. Ke2 ({White should play} 24. Bxf4 $15 Nxf4 25. f7+ Kd7 26. Be2) 24... O-O $17 25. Raf1 Bxe3 (25... Rxf6 $17 26. Bxf4 Nxf4+ 27. Kd2 Raf8) 26. Kxe3 $15 Rae8 27. Kd2 Nxd4 28. Bxg6 hxg6 29. Rxg6+ Kf7 30. Rg7+ Ke6 {aiming for ...Rf7.} 31. Rxc7 b6 32. f7 Rd8 {And now ...bxc5 would win.} 33. cxb6 (33. Rxa7 $11 {remains equal.} bxc5 34. Re1+ Kf5 35. Rf1+ Ke5 36. a4) 33... axb6 $17 34. Rb7 $2 ({White must play} 34. a4 $1 $15) 34... Nxb5 $19 35. Rxb6+ Nd6 36. Kd3 Rxf7 37. Rxf7 $2 (37. Re1+ Kd7 38. Ra6) 37... Kxf7 {[%mdl 4096] Endgame KRN-KR} 38. Kd4 (38. a4 $142 Ke6 39. Rb1) 38... Ke6 39. h4 Rh8 40. h5 Rc8 41. Rb4 Nf5+ 42. Kd3 Rh8 43. Rb6+ Ke5 44. Kc3 Rxh5 45. a4 Nd6 46. a5 Rh3+ (46... d4+ $142 47. Kb4 d3 48. Kc3 Rh3 49. Rb1 Ne4+ 50. Kb2 Rh2+ 51. Ka3 Nc3 52. Re1+ Re2 53. Ra1 d2 54. Kb3 Kd4 55. a6 Re1 56. Kc2 Rxa1 57. Kxd2 Ra2+ 58. Ke1 Ke3 59. Kf1 Kf3 60. Kg1 Kg3 61. Kh1 Ra1#) 47. Kb4 Rh4+ 48. Kb3 Nc4 49. Rb5 Rh6 (49... Rh3+ $142 50. Kb4 Rh1 51. Kc3 Rc1+ 52. Kd3 Ra1 53. Kc3 Rxa5 54. Rb7 Ra3+ 55. Kb4 {[#]} Rb3+ $1 {[%mdl 512]} 56. Ka4 Rc3 57. Re7+ Kd6 58. Re8 d4 59. Kb4 Kd5 60. Rg8 Rc1 61. Rg5+ Ne5 62. Kb3 d3 63. Rg8 Ke4 64. Rg2 Ke3 65. Rg3+ Nf3 66. Rg2 Nd4+ 67. Kb4 Ne2 68. Rg6 d2 69. Re6+ Kd3 70. Rf6 d1=Q 71. Ka5 Ra1+ 72. Kb6 Qb3+ 73. Kc5 Rc1+ 74. Kd6 Qb6+ 75. Kd7 Rc7+ 76. Ke8 Qb8#) 50. Kb4 Ra6 (50... Rh1 $142 51. Kc3 Rc1+ 52. Kd3 Ra1 53. Kc3 Nd6 54. Rb8 d4+ 55. Kc2 Ra2+ 56. Kd3 Rxa5 57. Ke2 Ra2+ 58. Kf3 Ra3+ 59. Kg4 Re3 60. Rb2 d3 61. Rh2 Ne4 62. Rh5+ Kd4 63. Rh2 d2 64. Rxd2+ Nxd2 65. Kf5 Kd5 66. Kg6 Ke6 67. Kg5 Re4 68. Kg6 Nf3 69. Kg7 Rg4+ 70. Kh8 Kf7 71. Kh7 Rh4#) 51. Rc5 {[#]} Rxa5 $1 52. Rxc4 (52. Rxa5 Nxa5) 52... dxc4 {[%cal Bd5c4,Bc4c3][%mdl 32]} 53. Kxa5 c3 {Precision: White = 26%, Black = 61%.} 0-1

