[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.1"]
[White "Tesar, Jan"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2001"]
[BlackElo "2491"]
[Annotator "ChessBase"]
[PlyCount "72"]
[EventDate "2020.01.10"]
[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. g3 {[%emt 0:00:00]} c5 {[%emt 0:00:31]} 3. d5 {[%emt 0:01:14]} e6 {[%emt 0:00:27]} 4. Nc3 {[%emt 0:00:33]} d6 {[%emt 0:00:05]} 5. Bg2 {[%emt 0:00:30]} Be7 {[%emt 0:00:19]} 6. e4 {[%emt 0:04:07]} O-O {[%emt 0:01:13]} 7. Nf3 {[%emt 0:00:23]} exd5 {[%emt 0:00:26]} 8. exd5 {[%emt 0:00:29]} Na6 {[%emt 0:00:55]} 9. O-O {[%emt 0:00:27]} Bf5 {[%emt 0:01:21]} 10. Nh4 {[%emt 0:02:22]} Bd7 {[%emt 0:00:19]} 11. a4 {[%emt 0:04:05]} Re8 {[%emt 0:04:24]} 12. h3 {[%emt 0:07:23]} h6 {[%emt 0:08:55]} 13. Nb5 {[%emt 0:03:06]} Qb6 {[%emt 0:00:24]} 14. c4 {[%emt 0:01:04]} Nb4 {[%emt 0:00:11]} 15. Bd2 {[%emt 0:10:44]} a6 {[%emt 0:01:01]} 16. Nc3 {[%emt 0:00:43]} Nh7 {[%emt 0:18:33]} 17. Nf3 {[%emt 0:12:50]} Bf5 {[%emt 0:06:07]} 18. a5 {[%emt 0:00:14]} Qd8 {[%emt 0:00:46]} 19. Ne2 {[%emt 0:02:06]} Bc2 {[%emt 0:00:45]} 20. Qc1 {[%emt 0:06:28]} Bd3 {[%emt 0:00:04]} 21. Nf4 {[%emt 0:04:26]} Bxf1 {[%emt 0:00:05]} 22. Bxf1 {[%emt 0:00:12]} Ng5 {[%emt 0:00:35]} 23. Nh4 {[%emt 0:05:32]} Bf6 {[%emt 0:01:52]} 24. Nf5 {[%emt 0:02:31]} Qd7 {[%emt 0:00:56]} 25. g4 {[%emt 0:00:54]} Nf3+ {[%emt 0:04:59]} 26. Kg2 {[%emt 0:02:31]} Nd4 {[%emt 0:02:01]} 27. Nxd4 {[%emt 0:02:50]} Bxd4 {[%emt 0:00:06]} 28. Ra3 {[%emt 0:02:33]} Qe7 {[%emt 0:04:01]} 29. Rf3 {[%emt 0:01:41]} Qe4 {[%emt 0:02:03]} 30. Bxb4 {[%emt 0:03:02]} cxb4 {[%emt 0:00:01]} 31. Bd3 {[%emt 0:00:18]} Qe1 {[%emt 0:02:05]} 32. Qc2 {[%emt 0:00:30]} Qa1 {[%emt 0:00:59]} 33. Bh7+ {[%emt 0:06:29]} Kh8 {[%emt 0:00:01]} 34. Bg6 {[%emt 0:04:59]} Re1 {[%emt 0:05:57]} 35. Ne2 {[%emt 0:01:10]} fxg6 {[%emt 0:00:49]} 36. Rf7 {[%emt 0:01:11]} Qxb2 {[%emt 0:00:47]} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.2"]
[White "Stankovic, Milos"]
[Black "Hajiyev, Kanan"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2466"]
[BlackElo "1996"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,73,24,10,24,12,26,0,0,0,9,8,16,7,15,1,8,0,0,0,0,0,0,-13,-4,-13,0,0,21,8,18,16,197,214,212,182,212,213,304,310,321,313,368,217,270,247,253,246,256,248,274,265,347,350,413,381,388,373,395,304,292,269,322,319,704,683]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. c4 e6 5. Nc3 Nd7 6. Nf3 h6 {B12: Caro-Kann: Advance Variation} 7. h3 Ne7 8. cxd5 cxd5 {The position is equal.} (8... Nxd5 9. Bd3 Bb4 10. O-O Bxd3 11. Qxd3 Be7 12. Bd2 O-O 13. Rfe1 Re8 {½-½ (25) Stankovic,M (2451)-Donchenko,A (2607) Germany 2018}) 9. Bd3 $146 ({Predecessor:} 9. g4 Bh7 10. Bd3 Bxd3 11. Qxd3 Nc6 12. a3 Be7 13. Ne2 Rc8 14. O-O {1-0 (44) Reimer,O (1927)-Harringer,M (2030) Bad Homburg 2015}) 9... a6 10. O-O Bxd3 11. Qxd3 Nc6 12. a3 Be7 13. Ne2 Qb6 14. Nf4 Qb5 15. Qe3 Na5 16. Nh5 g6 17. Nf4 Qb3 18. Qe1 Nc4 19. Qe2 Rc8 20. Rd1 Ndb6 $2 (20... Na5 $11) 21. Rd3 $1 $18 {[%cal Rd3b3]} Qb5 {[#]} 22. a4 $1 $36 {[%cal Ra4b5][%mdl 2560] White is in control.} Qd7 {[#]} (22... Nxa4 23. b3) 23. Qe1 $1 g5 (23... Nxa4 $142 24. b3 {[%mdl 64] Double Attack} Nab6) 24. Nh5 Na8 25. b3 Ncb6 26. Nh2 (26. Nf6+ $142 Bxf6 27. exf6) 26... Qc6 27. Bd2 Qc2 28. Qe3 Qb2 29. Rf1 Rc7 30. Ng4 Kd8 31. Qf3 Nd7 32. Qxf7 {And now Ng7 would win.} Qc2 33. Qf3 Kc8 34. Qe2 Qb2 35. Ne3 Kb8 36. Qg4 Qa2 $2 (36... Nf8 37. f4 gxf4) 37. Qxe6 {[%mdl 64] Double Attack. Accuracy: White = 66%, Black = 32%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.3"]
[White "Mindl, Josef"]
[Black "Cernousek, Lukas"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "1990"]
[BlackElo "2447"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,94,17,22,25,22,24,0,0,0,2,0,0,0,0,0,0,-31,-38,-81,-88,-83,-84,-86,-89,-117,-96,-79,-62,-43,-53,-163,-185,-202,-165,-191,-153,-179,-152,-257,-253,-320,-319,-313,-295,-310,-293,-288,-288,-290,-289,-347,-295,-297,-306,-329,-341,-426,-340,-393,-376,-459,-424,-501,-479,-453,-379,-1102,-1125,-1110,-1035,-1477,-1225,-1475,-1225,-2547,-2332,-29976,-29978,-29980,-29981,-29981,-29981,-29981,-29976]} 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 a6 6. h3 e5 7. Nde2 h5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} 8. Bg5 Be6 9. Qd2 Nbd7 {The position is equal.} 10. g3 Be7 11. Bg2 b5 12. a3 Rb8 $146 ({Predecessor:} 12... Rc8 13. O-O O-O 14. b3 Nh7 15. Be3 {0-1 (70) Sasikiran,K (2674)-Jumabayev,R (2611) Moscow 2017}) 13. O-O a5 14. Bxf6 Nxf6 15. Nd5 Nxd5 16. exd5 Bd7 17. f4 f5 18. fxe5 dxe5 19. d6 Qb6+ {[%mdl 64] [#] Double Attack} 20. Kh1 Qxd6 21. Qxd6 (21. Qxa5 $15 Qe6 22. Rae1) 21... Bxd6 $19 22. Rad1 Rh6 23. Rd2 Bc7 24. Rfd1 Rd8 25. Bd5 (25. h4 $17 {was necessary.}) 25... Rd6 26. Bf7+ Ke7 27. Rxd6 Bxd6 28. Bd5 Bc5 29. Bg2 Be6 30. Rxd8 Kxd8 {[%mdl 4096] Endgame KBB-KBN} 31. Bc6 b4 32. axb4 axb4 ({Don't do} 32... Bxb4 33. h4 $19) 33. Kg2 g5 34. Nc1 Bd6 35. Ne2 Ke7 36. Nc1 Kf6 37. Ne2 Bc4 38. Nc1 Ke6 39. Nd3 $2 {[#]} (39. g4) 39... Bd5+ 40. Bxd5+ Kxd5 {KB-KN} 41. Kf2 e4 42. Nc1 Bc5+ 43. Ke2 f4 44. gxf4 gxf4 {Black mates.} 45. Nb3 f3+ 46. Ke1 e3 47. Nc1 Bd6 {Accuracy: White = 40%, Black = 84%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.4"]
[White "Laxman, R.R."]
[Black "Wang, Yukun"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2441"]
[BlackElo "1990"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,80,24,33,20,29,12,8,17,50,45,59,59,50,53,61,42,58,31,57,23,32,24,36,30,33,0,0,0,5,0,0,-10,12,-6,-6,-4,0,-7,-3,-35,-26,-24,-9,-8,-9,-11,0,0,0,0,0,4,0,0,8,0,8,8,8,8,8,8,8,8,8]} 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qb6 9. Nxg6 hxg6 10. Bd2 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5} (10. cxd5 {looks sharper.} Nxd5 11. Bd2 Nd7 12. Bc4 Qc7 13. Ne2) 10... Nbd7 11. cxd5 (11. g3 Be7 12. Kf2 g5 13. Kg2 Rd8 14. Qxb6 axb6 15. a4 O-O 16. cxd5 exd5 17. Bd3 g4 {1-0 (54) Ding,L (2812)-Mamedov,R (2701) Astana 2019}) 11... Qxb3 12. axb3 {aiming for dxe6.} Nxd5 13. Nxd5 cxd5 14. Bd3 Bd6 15. h3 $146 ({Predecessor:} 15. Kf2 Ke7 16. h3 Rhc8 17. h4 a6 {0-1 (78) Miedema,D (2325)-Van Wessel,R (2340) Netherlands 2010}) 15... Ke7 16. Ke2 Rhc8 17. h4 e5 18. h5 gxh5 19. Rxh5 g6 20. Rh4 a6 21. Bc3 exd4 22. Bxd4 Nc5 23. Bc2 Ne6 24. Bc3 Bg3 25. Rh7 d4 26. exd4 Nxd4+ 27. Kd3 $132 {[%mdl 2048] White is fighting back} Nb5 28. Ra4 {[#] Hoping for Re4+.} Nxc3 29. bxc3 b5 30. Re4+ {The position is equal.} Kf6 31. f4 Re8 32. Ke3 Rac8 33. Rxe8 Rxe8+ $11 {[%mdl 4096] Endgame KRB-KRB} 34. Kf3 Rc8 35. c4 $1 bxc4 36. bxc4 ({Much worse is} 36. Kxg3 cxb3 37. Be4 Ke6 $15) 36... Rxc4 {[%mdl 64] ...Rc3+ is the strong threat. Double Attack} 37. Rxf7+ $1 Kxf7 38. Bb3 {[#]} Kf6 $1 {[%mdl 512] ( -> ...Rc3+)} 39. Bxc4 Be1 40. Bxa6 g5 {Accuracy: White = 57%, Black = 63%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.5"]
[White "Nemec, Jachym"]
[Black "Budnikov, Oleg"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1988"]
[BlackElo "2432"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,70,26,44,37,54,47,133,68,81,69,58,7,13,-16,-13,-26,-18,-36,-30,-28,-36,-159,-137,-253,-250,-242,-247,-233,-237,-232,-231,-234,-226,-235,-140,-250,-228,-239,-225,-233,-213,-233,-171,-168,-162,-204,-203,-249,-250,-245,-237,-248,-238,-235,-158,-193,-77,-71,-99,-208,-209,-1074,-1070]} 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 a6 5. Bc4 e6 6. O-O {B06: Modern Defence} (6. a4 Ne7 7. O-O O-O 8. Re1 Nbc6 9. Be3 d5 10. Bb3 h6 11. exd5 exd5 12. h3 Be6 13. Ne2 Na5 {0-1 (26) Ivanov,A (2476)-Mamedov,R (2678) Atlantic City 2016}) 6... b6 7. Re1 Nd7 $146 (7... Bb7 $14) ({Predecessor:} 7... Ne7 8. h3 h6 9. Nh2 Nd7 10. f4 O-O 11. Be3 Bb7 12. a4 c5 13. Nf3 {0-1 (38) Hoffmann,F (1694)-Mense,J (1802) Germany 2014}) 8. e5 (8. Ng5 $1 $16 {Bxe6! is the strong threat.} Bf6 9. Nxf7 Kxf7 10. e5 $1 {[%mdl 512]}) 8... Ne7 $1 $14 9. exd6 cxd6 10. Ng5 (10. Bg5 $14 h6 11. Bxe7 Kxe7 12. Nh4) 10... Nf6 $1 $11 11. Qf3 d5 12. Bd3 O-O 13. Ne2 Nc6 {White should prevent ...h6.} 14. Bf4 Nh5 15. Be3 (15. Rad1 $15) 15... h6 16. g4 (16. Nh3 $17 {was called for.}) 16... Nf6 $19 ({Weaker is} 16... hxg5 17. gxh5 e5 18. dxe5 $17) 17. Nh3 {[#]} e5 $1 {[%cal Re5e4]} 18. dxe5 Nxg4 19. Nhf4 Ncxe5 20. Qg2 Nxe3 21. fxe3 Ng4 (21... Bb7 $19 22. Nd4 Re8) 22. Ng3 (22. Nxd5 $17 Bb7 23. Nef4) 22... Bxb2 23. Rad1 Bc3 24. Re2 Nf6 25. Nf5 Bxf5 26. Bxf5 Kh8 27. Bd3 Be5 28. Qh3 Bxf4 29. exf4 Kg7 30. Rg2 Qd6 31. Qh4 Ne4 32. f5 Ng5 (32... Qe5 $19 {is more deadly.} 33. Bxe4 Qxe4) 33. Rf1 {[#] Threatens to win with f6+.} Qe5 $1 34. f6+ (34. Kh1 $17 Rae8 35. Qb4) 34... Kh7 35. Rf4 $2 {[#]} (35. Rg4 Ne4 36. Bxe4 dxe4 37. Rxe4) 35... Qxf4 $1 {[%mdl 512] Accuracy: White = 19%, Black = 63%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.6"]
[White "Low, Zhen Yu Cyrus"]
[Black "Grichkevitch, Gilles"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2415"]
[BlackElo "1985"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,42,7,21,22,20,10,139,164,440,415,475,450,443,390,541,541,716,267,571,570,1295,1297,1255,1285,29982,29983,29983]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 f5 10. exf6 $1 {B45: Sicilian Four Knights} gxf6 11. Bd3 Nxf4 $146 (11... Qb6 $11 {keeps the balance.}) ({Predecessor:} 11... Qb6 12. a3 Ba6 13. Qh5+ Kd8 14. Qe2 Bxd3 15. Qxd3 f5 16. Ng5 Kc7 17. c4 Nf6 {1-0 (41) Naiditsch,A (2710)-Moiseenko,A (2698) Germany 2014}) 12. O-O {White is clearly better.} Qb6+ $2 (12... e5 {is a better defense.}) 13. Kh1 $18 Nxd3 14. Nxf6+ ({Weaker is} 14. cxd3 Ba6 $16) ({Less strong is} 14. Qxd3 Be7 $16) 14... Kd8 {Hoping for ...Nf2+.} 15. Qxd3 Be7 16. Bg5 Qb5 17. Qe3 $2 (17. Qg3) 17... Rb8 $2 (17... h6) 18. c4 {Played: Ra1-d1} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.7"]
[White "Turkova, Karolina"]
[Black "Lalic, Bogdan"]
[Result "0-1"]
[ECO "B36"]
[WhiteElo "1981"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,96,26,6,15,7,29,0,5,8,8,0,0,0,0,-33,-37,-40,-44,-43,-43,-28,-28,-29,-29,-109,-109,-93,-70,-146,-139,-140,-133,-129,-143,-145,-137,-139,-138,-154,-151,-177,-173,-172,-174,-239,-239,-239,-239,-239,-232,-239,-231,-902,-829,-1133,-1099,-1553,-1289,-2310,-1937,-12834,-12835,-12835,-12835,-12836,-12836,-12837,-12837,-12837,-12837,-12837,-12837,-12845,-12845,-12847,-12847]} 1. e4 c5 2. Nf3 g6 3. c4 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Nc3 Nxd4 7. Qxd4 d6 8. Bg5 Bg7 9. Be2 O-O 10. O-O Be6 11. Qe3 Qb6 12. Rab1 Qxe3 {B36: Sicilian: Maroczy Bind: Gurgenidze System} (12... Rfc8 13. b3 Qxe3 14. Bxe3 a6 15. Na4 Nd7 16. f4 f5 17. exf5 Bxf5 18. Rbc1 Rab8 19. Ba7 Ra8 20. Bf2 {½-½ (38) Nabaty,T (2604)-Kovchan,A (2591) Paleochora 2015}) 13. Bxe3 Rfc8 14. Nd5 Bxd5 {The position is equal.} 15. exd5 b5 16. Rfc1 $146 ({Predecessor:} 16. cxb5 Nxd5 17. Bf3 Nxe3 18. fxe3 Rab8 19. Bc6 Bxb2 20. Rf4 {½-½ (49) Misailovic,N (2301)-Blesic,V (2397) Kraljevo 2011}) 16... bxc4 17. Bxc4 Ng4 18. Bg5 Bd4 19. Bh4 {[#]} g5 $1 {[%mdl 512]} 20. Bxg5 Bxf2+ 21. Kh1 Be3 $36 {[%mdl 2048] Black fights for an advantage.} 22. Bxe3 Nxe3 23. b3 (23. Bb3 $11) 23... Rab8 $17 24. Kg1 Kg7 25. Kf2 (25. Ba6 $15 Rxc1+ 26. Rxc1) 25... Nxc4 26. bxc4 Rxb1 27. Rxb1 Rxc4 {[%mdl 4096] Endgame KR-KR} 28. Rb7 {[#]} Kf6 $1 29. Rxa7 Rc5 30. a4 Rxd5 31. a5 {[#]} Rd2+ $1 32. Kf3 h5 {Played: Rd2-a2} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.8"]
[White "Quesada Vera, Liordis"]
[Black "Plasil, Petr"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2386"]
[BlackElo "1978"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,65,39,25,35,29,22,11,33,15,37,4,115,114,108,108,168,169,158,144,156,147,172,162,155,167,167,167,165,165,172,173,163,169,152,161,222,225,215,229,288,282,293,301,384,385,376,270,314,299,472,458,500,500]} 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d5 6. c4 c6 7. O-O Bf5 8. d3 Qd7 {A11: English Opening: 1...c6} (8... Qc8 9. Nbd2 Bh3 10. Rc1 Bxg2 11. Kxg2 Qd8 12. b4 Nbd7 13. a4 e6 14. Qb3 Re8 15. Rfd1 Rc8 16. Qa2 Bf8 17. b5 e5 18. cxd5 cxd5 19. Rxc8 Qxc8 {0-1 (68) Cordova,E (2609)-Delgado Ramirez,N (2619) Batumi 2018}) 9. Re1 Bh3 10. Bh1 Re8 $146 {The position is equal.} ({Predecessor:} 10... Qf5 11. Qc1 h6 12. Nc3 Qh5 13. e4 dxc4 14. bxc4 e5 15. Ne2 Nbd7 16. d4 {1-0 (47) Enkhnar,E (2438)-Yandemirov,V (2382) Alushta 2016}) 11. Qd2 Qf5 12. Nc3 {[%cal Bb1c3,Bc3d5,Bd5f6][%mdl 32]} e5 {[#]} (12... dxc4 $11 13. dxc4 e5) 13. cxd5 $1 $16 cxd5 {[#]} 14. Nxd5 $1 {[%mdl 512]} Qd7 {[#]} (14... Nxd5 $16 15. e4 {[%mdl 64] Double Attack} Qd7) 15. Nxf6+ $1 $18 ({Don't play} 15. Nxe5 $6 Rxe5 16. Bxe5 Nxd5 $16) 15... Bxf6 16. Ng5 Bf5 17. Rac1 Nc6 18. Ne4 Bxe4 19. Bxe4 Rac8 20. Rc4 Nd4 21. Rec1 b5 22. Rxc8 Rxc8 23. Rxc8+ Qxc8 24. e3 Nf5 (24... Ne6 $142 25. f4 Qc7) 25. Qc3 Qxc3 26. Bxc3 {[%mdl 4096] Endgame KBB-KBN} Bg7 27. Bb4 Bf6 28. Bc6 Ne7 29. Bxb5 Nd5 30. Be1 Kf8 31. Bc6 Ne7 (31... Nc7 {might work better.} 32. Ba5 Bd8) 32. Bb4 Kg8 33. Bb7 {Accuracy: White = 74%, Black = 39%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.9"]
[White "Wikar, Martyna"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "A88"]
[WhiteElo "1978"]
[BlackElo "2380"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,60,6,28,0,26,15,41,13,58,66,60,52,48,-17,-17,-15,-25,-49,-46,-81,-86,-90,-90,-141,-127,-147,-141,-243,-259,-262,-253,-325,-335,-366,-343,-390,-358,-516,-493,-498,-485,-625,-560,-552,-500,-1292,-1253]} 1. Nf3 g6 2. g3 Bg7 3. Bg2 f5 4. d4 Nf6 5. c4 O-O 6. O-O d6 7. Nc3 c6 8. Qc2 Na6 9. Bd2 {A88: Dutch Defence: Leningrad System: 5 Nf3 0-0 6 0-0 d6 7 Nc3 c6} (9. Re1 Re8 10. Bg5 e5 11. dxe5 dxe5 12. Rad1 Qe7 13. e4 Nc5 14. Qc1 Qf8 15. Nh4 Nfxe4 16. Bxe4 fxe4 17. Nxe4 {1-0 (47) Adly,A (2593)-Anton Guijarro,D (2676) Sharjah 2017}) 9... Nh5 10. d5 Nb4 $146 ({Predecessor:} 10... e5 11. dxe6 Bxe6 12. b3 f4 13. Rad1 Bf5 14. Qc1 g5 15. Be1 Qe7 16. Nd4 Bd7 {0-1 (39) Lisitsin,G-Lutikov,A Leningrad 1955}) 11. Qa4 {White is slightly better.} c5 12. a3 Na6 13. Rfe1 f4 14. Ne4 (14. e3 $14) 14... Bxb2 $11 15. Rab1 Bg7 16. Neg5 Nc7 17. Ne6 Nxe6 18. dxe6 Qe8 $1 {[%cal Re8a4]} 19. Qb3 {[#]} (19. Qxe8 $142 Rxe8 20. gxf4) 19... Rb8 $1 $17 ({Don't play} 19... Bxe6 $6 20. Ng5 $11) 20. g4 Nf6 21. Bxf4 (21. h3 $17) 21... Bxe6 $19 22. h3 {[#]} b5 $1 {[%cal Bb7b5,Bb5c4][%mdl 544]} 23. Nd2 (23. cxb5 Bxb3) 23... bxc4 24. Qe3 {Black must now prevent Rxb8.} Qf7 25. Bg5 Nd5 26. Qg3 (26. Bxd5 $142 Bxd5 27. Rxb8 Rxb8 28. Qxe7 Qxe7 29. Bxe7) 26... h6 {Black is clearly winning.} 27. Be3 Nxe3 28. fxe3 Be5 29. Qh4 Qg7 {aiming for ...g5.} 30. Ne4 (30. Rxb8 $142 Rxb8 31. Nf3) 30... g5 {Accuracy: White = 13%, Black = 79%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.10"]
[White "Neuman, Petr"]
[Black "Ortoft, Kai"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2371"]
[BlackElo "1963"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,57,25,12,46,38,58,54,55,65,67,74,98,89,117,54,72,68,91,78,77,60,96,96,96,96,96,96,118,118,118,112,224,243,211,214,187,196]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. Qc2 Be7 7. e3 O-O 8. Bd3 Nbd7 9. Nge2 Re8 10. O-O Nf8 11. f3 Ng6 12. Rad1 Nd7 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2)} (12... Nh5 13. Bxe7 Qxe7 14. e4 Qg5 15. Kh1 Nhf4 16. Nxf4 Nxf4 17. e5 Nxd3 18. Qxd3 Bf5 19. Qd2 Qxd2 20. Rxd2 {½-½ (60) Reuker,J (2394)-Meskovs,N (2548) Braunschweig 2019}) 13. Bxe7 Qxe7 14. e4 dxe4 {White is slightly better.} 15. fxe4 Nf6 16. e5 Nd5 17. Nxd5 cxd5 18. Ng3 (18. Nc3 $16) 18... Be6 $146 ({Predecessor:} 18... Qh4 19. Bb5 Re7 20. Nf5 Bxf5 21. Qxf5 {1-0 (43) Raecke,N-Hesselbarth,K (1793) Berlin 2012}) 19. Nf5 Bxf5 20. Bxf5 Nf8 21. Rf3 g6 22. Bh3 $36 {[%mdl 2048] White has strong initiative.} Ne6 23. Bxe6 fxe6 24. Rdf1 Rf8 25. Rf6 Rxf6 26. exf6 Qd6 (26... Qf7 $16 {might work better.}) 27. f7+ $18 {White is clearly better.} Kg7 28. Qf2 {[#] White wants to mate with Qf6+.} Qe7 29. Qf4 {Accuracy: White = 63%, Black = 44%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.11"]
[White "Eliseev, Sergey"]
[Black "Peng, Hongchi"]
[Result "0-1"]
[ECO "B53"]
[WhiteElo "1959"]
[BlackElo "2362"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,48,27,42,41,48,61,56,-21,-27,-12,22,-18,23,15,76,-136,-113,-146,-130,-139,-135,-144,-142,-189,-182,-262,-282,-275,-283,-275,-274,-271,-264,-275,-285,-277,-207,-274,-220,-317,-320]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nf6 5. Nc3 Bd7 6. Bg5 {B53: Sicilian: 2...d6: Lines with Qxd4} Nc6 7. Qd2 h6 8. Bh4 (8. Bxf6 $14 gxf6 9. Bc4) 8... g5 $11 9. Bg3 g4 $146 ({Predecessor:} 9... Nh5 10. Nd4 Nxd4 11. Qxd4 Bg7 12. Qe3 Qa5 13. Be2 Nxg3 14. hxg3 {0-1 (35) Martinez,R (2420)-Jobava,B (2678) Milan 2011}) 10. Nd4 h5 {Strongly threatening ...Nxd4.} 11. f4 Bh6 (11... gxf3 $11 {remains equal.} 12. Nxf3 Qa5) 12. Nf5 $2 (12. Bf2 $16 {keeps the pressure on.}) 12... Nxe4 $1 $17 {[%mdl 64] [#] Remove Defender} 13. Nxe4 Bxf5 14. Bd3 Qd7 15. Qe2 {Nf6+ is the strong threat.} O-O-O 16. Rd1 Bg7 {Threatens to win with ...h4.} 17. O-O (17. Ng5 {was necessary.} h4 18. Bxf5 Qxf5 19. Bf2) 17... h4 $19 ({Don't play} 17... Bxb2 18. c3 $17) 18. Bf2 g3 (18... Bxb2 19. Rb1 $17) 19. hxg3 Bg4 {[%mdl 64] [#] Skewer} (19... Bxb2 20. Rb1 $17) 20. Qd2 Bxd1 ({Weaker is} 20... Bxb2 21. Rb1 $15) 21. Rxd1 hxg3 (21... Bxb2 22. gxh4 Bd4 23. g3 $19) 22. Nxg3 Kb8 23. Nf5 Bf6 24. Qe3 (24. b4 $142 e6 25. b5) 24... e6 {Accuracy: White = 35%, Black = 65%.} ({But not} 24... Bxb2 25. Be4 $19) 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.12"]
[White "Malovanyi, Yulian"]
[Black "Thorsteinsdottir, Gudlaug"]
[Result "1/2-1/2"]
[ECO "C24"]
[WhiteElo "2360"]
[BlackElo "1958"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,80,14,23,16,22,13,19,11,11,0,4,-24,-24,-20,-14,-14,-14,-20,-14,-36,-20,-30,-22,-62,-63,-113,-24,-26,-25,-26,0,0,0,0,0,-17,0,-81,-10,-34,-22,-22,0,0,0,0,0,0,0,0,5,0,-5,-6,-11,-401,0,0,0,0,0,0,0]} 1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nc3 d6 5. f4 exf4 6. Bxf4 Na5 7. Bb3 Nxb3 8. axb3 Be7 9. Nf3 O-O 10. O-O c6 11. h3 {C28: Vienna Game: 2...Nf6 3 Bc4 Nc6} (11. Ne2 a6 12. Ng3 Ng4 13. h3 Nf6 14. Qd2 Be6 15. Rae1 Kh8 16. Nf5 Bxf5 17. exf5 a5 18. Bh2 a4 19. bxa4 Rxa4 {1-0 (35) Lu,S (2615)-Abergel,T (2475) St Petersburg 2016}) 11... Be6 12. Qd2 d5 $146 ({Predecessor:} 12... b5 13. Ra6 Bc8 14. Raa1 Nh5 15. Bh2 g6 16. Ne2 Ng7 17. Kh1 f5 18. e5 Re8 {1-0 (48) Lengyel,B (2324)-Salem,A (2214) Budapest 2007}) 13. e5 Nd7 14. d4 f6 15. Rae1 fxe5 16. Nxe5 Nxe5 17. Bxe5 Bf5 18. Rf3 Bg5 19. Qe2 {Hoping for Ref1.} Bg6 20. Rxf8+ Qxf8 21. Rf1 Qe7 22. Nd1 Rf8 (22... Bf6 $1 $17 23. c3 Re8) 23. Rxf8+ $11 Qxf8 24. c4 h5 25. cxd5 cxd5 26. Nc3 Qf7 27. Nb5 b6 28. Nd6 (28. Nc3 $11 {remains equal.}) 28... Qf8 ({Better is} 28... Qc7 $1 $17 {Threatening ...Qc1+.} 29. Qd1 Qc1 $1 {[%mdl 512]} 30. Qxc1 Bxc1) 29. Kh1 Kh7 30. Nb5 Qf7 31. Nc3 Kh6 32. b4 h4 33. Bh2 Bh5 34. Qe5 Qf1+ 35. Bg1 {[#]} Bf3 $1 {[%csl Gf3][%cal Rf1g2][%mdl 512]} 36. Qh2 (36. gxf3 Qxf3+) 36... Be4 37. Qd6+ $1 {[#]} g6 $2 (37... Kh5 $1 $19 {[%csl Ge4][%cal Rf1g2]} 38. Nxe4 dxe4) 38. Nxe4 {The position is equal.} dxe4 39. Qe5 {[%cal Re5h8]} Be3 {[%csl Ge3][%cal Rf1g1]} 40. Qh8+ Kg5 {Accuracy: White = 59%, Black = 41%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.13"]
[White "Kolchin, Maxim"]
[Black "Mis, Mieszko"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1956"]
[BlackElo "2349"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,40,4,64,-2,2,-33,-29,-27,-33,-32,-28,-37,-23,-98,-75,-91,-72,-94,-78,-310,-314,-318,-325,-606,-594,-598,-582,-1270,-1256]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. c3 O-O 5. Nbd2 d6 6. e4 Nc6 7. Bd3 e5 (7... h6 $11 8. Bxf6 Bxf6) 8. d5 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} (8. h3 $14) (8. O-O h6 9. Bh4 exd4 10. cxd4 g5 11. Bg3 Nh5 12. d5 Ne7 13. Nb3 Nxg3 14. hxg3 Bxb2 15. Rb1 Bg7 {1-0 (30) Van Foreest,J (2548)-Sethuraman,S (2640) Berlin 2015}) 8... Ne7 $11 9. h3 Nh5 10. g4 $146 {Black has an edge.} ({Predecessor:} 10. g3 f6 11. Be3 f5 12. Qc2 f4 13. gxf4 Nxf4 14. Bxf4 Rxf4 15. O-O-O Qf8 {0-1 (53) Paquette,J (1272)-Wang,Y (2033) San Francisco 2014}) 10... Nf4 11. Bxf4 exf4 12. Qb3 c6 13. O-O-O (13. a4 $11 {keeps the balance.}) 13... b5 14. dxc6 a6 15. Nd4 Qb6 16. Ne2 $2 {[#]} ({Don't go for} 16. Nc4 $2 Qc5 $19) (16. Qb4 $17) 16... Be6 $1 $19 {[%cal Re6b3]} 17. Qa3 Nxc6 18. Nxf4 $2 (18. Kb1 a5 19. c4) 18... b4 {Black is clearly winning.} 19. cxb4 Nxb4 {aiming for ...Qc5+.} 20. b3 {[#]} Qd4 $1 {[%mdl 512] Accuracy: White = 11%, Black = 97%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.14"]
[White "Priehoda, Vitezslav"]
[Black "Sovina, Maria"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2341"]
[BlackElo "1943"]
[Annotator "RC"]
[PlyCount "101"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:29]} g6 {[%emt 0:00:00]} 4. Bg2 {[%emt 0:00:07]} Bg7 {[%emt 0:00:00]} 5. a3 {[%emt 0:01:51]} e6 {[%emt 0:01:00]} 6. d3 {[%emt 0:02:52]} Nge7 {[%emt 0:01:14]} 7. Nf3 {[%emt 0:00:39]} O-O {[%emt 0:04:33]} 8. Bg5 {[%emt 0:06:15]} h6 {[%emt 0:05:18]} 9. Bd2 {[%emt 0:00:05]} d5 {[%emt 0:01:16]} 10. cxd5 {[%emt 0:01:34]} Nxd5 {[%emt 0:04:13]} 11. O-O {[%emt 0:04:33]} b6 {[%emt 0:10:07]} 12. Rb1 {[%emt 0:08:07]} Bb7 {[%emt 0:04:30]} 13. Nxd5 {[%emt 0:00:29]} Qxd5 {[%emt 0:01:45]} 14. b4 {[%emt 0:02:28]} cxb4 {[%emt 0:00:54]} 15. axb4 {[%emt 0:00:05]} Nd4 {[%emt 0:01:56]} 16. Ne1 {[%emt 0:07:31]} Qd7 {[%emt 0:00:40]} 17. Bxb7 {[%emt 0:00:42]} Qxb7 {[%emt 0:00:02]} 18. Nc2 {[%emt 0:03:36]} Nxc2 {[%emt 0:05:08]} 19. Qxc2 {[%emt 0:00:04]} Rfc8 {[%emt 0:03:09]} 20. Qb3 {[%emt 0:00:19]} Rc7 {[%emt 0:04:26]} 21. Rfc1 {[%emt 0:02:44]} Rac8 {[%emt 0:01:00]} 22. b5 {[%emt 0:00:24]} Rxc1+ {[%emt 0:10:09]} 23. Rxc1 {[%emt 0:00:06]} Rxc1+ {[%emt 0:00:03]} 24. Bxc1 {[%emt 0:00:06]} Qc8 {[%emt 0:07:20]} 25. Be3 {[%emt 0:09:42]} h5 {[%emt 0:04:31]} 26. Kg2 {[%emt 0:10:25]} Qb7+ {[%emt 0:05:28]} 27. f3 {[%emt 0:00:10]} Qc7 {[%emt 0:00:20]} 28. Bf2 {[%emt 0:06:37]} Qe5 {[%emt 0:01:50]} 29. e4 {[%emt 0:00:49]} Qc3 {[%emt 0:01:29]} 30. Qxc3 {[%emt 0:01:06]} Bxc3 {[%emt 0:00:02]} 31. g4 {[%emt 0:00:07]} hxg4 {[%emt 0:08:02]} 32. fxg4 {[%emt 0:00:02]} e5 {[%emt 0:01:07]} 33. Bh4 {[%emt 0:02:35]} Kf8 {[%emt 0:03:10]} 34. Bf6 {[%emt 0:01:48]} Ke8 {[%emt 0:01:07]} 35. h4 {[%emt 0:00:23]} Kd7 {[%emt 0:02:29]} 36. h5 {[%emt 0:00:07]} gxh5 {[%emt 0:00:05]} 37. gxh5 {[%emt 0:00:04]} Ke6 {[%emt 0:00:06]} 38. Bh4 {[%emt 0:03:29]} Bd2 {[%emt 0:00:53]} 39. Kf3 {[%emt 0:00:07]} Bh6 {[%emt 0:03:05]} 40. Kg4 {[%emt 0:03:50]} f6 {[%emt 0:01:28]} 41. Be1 {[%emt 0:30:06]} Bg5 {[%emt 0:31:05]} 42. Bb4 {[%emt 0:00:23]} Bh6 {[%emt 0:01:36]} 43. Ba3 {[%emt 0:00:11]} Be3 {[%emt 0:01:25]} 44. Bf8 {[%emt 0:03:37]} Kf7 {[%emt 0:00:26]} 45. Bd6 {[%emt 0:00:12]} Ke6 {[%emt 0:02:01]} 46. Bb8 {[%emt 0:02:40]} Kd7 {[%emt 0:01:34]} 47. Kf5 {[%emt 0:00:07]} Kc8 {[%emt 0:00:41]} 48. Bd6 {[%emt 0:00:38]} Kd7 {[%emt 0:00:23]} 49. Bb4 {[%emt 0:00:24]} Bg5 {[%emt 0:00:19]} 50. Kg6 {[%emt 0:00:22]} Ke6 {[%emt 0:00:10]} 51. Bf8 {[%emt 0:00:13]} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.15"]
[White "Hlavina, Matous"]
[Black "Domogaev, Sergey"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "1942"]
[BlackElo "2334"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,58,8,27,28,27,5,9,2,4,0,0,-13,-17,-54,-71,-53,-27,-68,-24,-84,-81,-97,-93,-87,-57,-59,-53,-58,0,-87,-62,-102,-58,-333,-326,-307,-285,-253,-300,-552,-545,-578,-579,-639,-503,-502,-510,-505,-514,-521,-494]} 1. e4 a6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Nf6 5. Bd3 e5 6. Nb3 {B28: Sicilian: 2 Nf3 a6 (O'Kelly Variation)} Be7 (6... d5 7. exd5 Qxd5 8. O-O Be6 9. Nc3 Qc6 10. Qe2 Nbd7 11. f4 Bd6 12. Kh1 O-O 13. f5 Bd5 14. Nxd5 Qxd5 {0-1 (38) Gaifullin,A (2448)-Khismatullin,D (2627) Yaroslavl 2018}) 7. Nc3 O-O 8. Be3 {The position is equal.} d6 9. f3 Be6 10. Qd2 Nbd7 {[%cal Bb8d7,Bd7c5,Bc5a4,Ba4c3][%mdl 32]} 11. g4 b5 12. g5 Nh5 (12... b4 $5 {[%cal Rb4c3]} 13. gxf6 bxc3 14. Qxc3 Bxf6 $15) 13. h4 $146 ({Predecessor:} 13. Be2 b4 14. Nd5 Bxd5 15. exd5 Nf4 16. Bxf4 exf4 17. Qxf4 Bxg5 {0-1 (34) Barker,S-Tasdelen,D (1986) ICC INT 2009}) 13... Nc5 14. Be2 (14. Nd5 $11) 14... Na4 {...Ng3 is the strong threat.} 15. O-O-O Nxc3 16. Qxc3 Rc8 17. Qd2 Qc7 18. Kb1 Rfd8 (18... Ng3 $15 19. Rhg1 Nxe2 20. Qxe2 a5) 19. Rc1 (19. Bd3 $1 $11) 19... d5 $36 {[%mdl 2048] Black fights for an advantage.} 20. Qe1 b4 21. Qf2 $2 {[%mdl 8192]} (21. exd5 $1 $15 Rxd5 22. c4 (22. Bxa6 Ra8 $17)) 21... d4 $19 22. Bd2 a5 23. f4 Nxf4 24. Nxd4 $2 (24. Bxf4 {was worth a try.} exf4 25. Rhf1) 24... Qb6 {[%mdl 64] [#] Pin. Black is clearly winning.} (24... Rxd4 $2 25. Bxf4 Rxe4 26. Be3 $17) ({Less strong is} 24... Nxe2 25. Nxe6 Rxd2 26. Nxc7 $17) 25. Be3 Bc5 {[%mdl 64] Pin} ({Weaker is} 25... exd4 26. Bxf4 a4 27. Bd3 $15) 26. Nf5 Bxf5 27. Bxc5 Qxc5 28. Qxc5 Rxc5 29. Rcd1 {[%cal Rd1d8] [#]} Rb8 {Accuracy: White = 21%, Black = 67%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.10"]
[Round "1.16"]
[White "Vokac, Marek"]
[Black "Fiser, Jiri"]
[Result "1-0"]
[ECO "A27"]
[WhiteElo "2334"]
[BlackElo "2134"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,41,37,33,20,105,84,116,114,116,128,127,118,117,91,92,96,81,91,93,86,110,116,111,116,119,108]} 1. c4 e5 2. Nf3 Nc6 3. Nc3 g6 4. d4 exd4 5. Nxd4 Bg7 6. Nxc6 bxc6 7. g3 Nf6 8. Bg2 O-O 9. O-O Bb7 10. Qa4 {A29: English Opening: Four Knights Variation with 4 g3} (10. Qb3 Qc8 11. Rd1 d6 12. Be3 Re8 13. Bd4 Nd7 14. Rac1 Bxd4 15. Rxd4 Rb8 16. Qc2 c5 17. Bxb7 Qxb7 {½-½ (44) Zaragatski,I (2494)-Godard,M (2348) Naujac 2013}) 10... d5 (10... Re8 $11) 11. Rd1 {White is better.} Re8 $146 ({Predecessor:} 11... Qe8 12. Bf4 Qe7 13. Rd2 Rfd8 14. Rad1 a6 15. Qa5 Rac8 16. Bh3 Ra8 17. Bxc7 Re8 18. cxd5 cxd5 {1-0 (30) Gaspar,A (2210)-Leite Oralova,C Lisbon 1997}) 12. Bg5 {Threatens to win with cxd5.} h6 13. cxd5 cxd5 {[#]} 14. Bxd5 $1 {[%mdl 512]} Bxd5 15. Bxf6 Qxf6 16. Rxd5 Qb6 17. Rd2 Bxc3 18. bxc3 Red8 19. Rad1 Rxd2 20. Rxd2 Rb8 21. Qc4 {Accuracy: White = 84%, Black = 32%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.1"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Pavlidou, Ekaterini"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2491"]
[BlackElo "2160"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,119,36,15,25,16,40,29,53,41,42,48,81,81,96,93,118,76,114,80,118,89,111,102,112,118,194,89,118,98,166,100,104,89,79,80,92,86,108,106,105,101,99,100,110,103,108,104,106,110,144,112,189,111,122,0,164,99,130,120,112,118,126,105,120,104,95,94,95,89,214,214,214,205,283,278,267,309,311,260,299,284,348,327,454,431,420,319,540,522,631,623,954,849,1163,1243,1180,1186,1112,2431,29980,29981,29981,29982,29982,29980]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. b3 Be7 6. O-O O-O 7. Bb2 a5 8. Nc3 Nbd7 9. d4 b6 {A14: English Opening: 1...e6 with b3 by White} (9... Rb8 10. Ne5 Bd6 11. f4 Ne8 12. e3 Bb4 13. Ne2 Be7 14. Qc2 Nd6 15. g4 f6 16. Nxd7 Bxd7 17. f5 {1-0 (69) Grandelius,N (2687)-Saduakassova,D (2461) Reykjavik 2019}) 10. Nd2 Ba6 11. e4 b5 {[%cal Rb5c4] White has an edge.} 12. exd5 exd5 {[%cal Rb5c4]} 13. cxb5 {[%mdl 64] Overworked Piece} cxb5 $146 ({Predecessor:} 13... Bxb5 14. Nxb5 cxb5 15. Qe2 Bb4 16. Nf3 Qb6 17. Ne5 {½-½ (55) Seeman,T (2420)-Solozhenkin,E (2488) Finland 2010}) 14. Nxd5 Nxd5 15. Bxd5 Ra7 16. Bg2 Nb6 17. Rc1 a4 18. Re1 a3 19. Ba1 Nd5 20. Nf1 b4 (20... Bb7 $16) 21. Ne3 (21. Bxd5 $1 $18 {is the precise move to win.} Qxd5 22. Ne3) 21... Bb7 22. Qe2 Bf6 {[#]} (22... Ba6 $16 23. Qf3 Nxe3 24. Qxe3 Bg5) 23. Qb5 (23. Bxd5 $1 $18 Bxd5 24. Qb5) 23... Nxe3 $16 24. fxe3 Bxg2 25. Kxg2 Re7 26. d5 Bb2 {[#]} 27. Bxb2 $1 axb2 28. Rb1 Re5 29. Qxb4 Qxd5+ 30. e4 Qc6 31. Rxb2 Rfe8 {[%cal Re5e4]} 32. Qc4 Qb7 {[%cal Re5e4]} 33. Rbe2 Kh8 (33... h5 $16 {was worth a try.} 34. b4 Qd7) 34. Kg1 (34. b4 $18) 34... Qa7+ 35. Kg2 Qb7 $1 36. Rc2 (36. b4 $18) 36... f5 37. Qc6 Qb4 38. Re3 fxe4 39. Rf2 Qe7 40. Rf4 Re6 41. Qc4 h6 42. a4 g5 (42... Qa7 $16 43. Qe2 (43. Rexe4 Rxe4 44. Rxe4 Qa8 $16) (43. Rfxe4 Qb7 $11) 43... Qc5) 43. Rf2 $18 Qa7 44. Qc3+ Kg8 45. a5 Qa6 46. b4 (46. Qc7 $6 R6e7 $18) 46... Qb5 47. Qd4 Qc6 48. Rd2 ({Don't do} 48. Qa7 $6 R8e7 $18) 48... Qb5 49. Rc2 Rf8 {[%csl Gf8][%cal Rb5f1]} 50. Qc4 Qf5 51. a6 {[%cal Ba5a6,Ba6a7][%mdl 32]} Kh7 $2 (51... Kg7 {is a better defense.} 52. Ra2 Rc6) 52. b5 {[%cal Bb4b5,Bb5b6][%mdl 32]} Re5 {...Rc5! is the strong threat.} 53. Rb2 g4 54. a7 Rc8 55. Qf1 ({Not} 55. Rf2 Rxc4 56. a8=Q (56. Rxf5 Rxf5 57. a8=Q Rc2+ 58. Kg1 Rc1+ 59. Kg2 Rc2+ 60. Kg1 Rc1+ 61. Kg2 Rc2+ $11) 56... Qd7 $14) 55... Qh5 56. b6 Rf5 57. Qb1 (57. Qa1 $142) 57... Qh3+ 58. Kg1 {White mates.} Rcf8 59. Re1 Kg7 60. Qa1 {Accuracy: White = 65%, Black = 42%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.2"]
[White "Chudinovskikh, Alexander M"]
[Black "Stankovic, Milos"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "2157"]
[BlackElo "2466"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,118,6,4,-10,-10,-10,-6,-11,-11,-11,-9,-11,-5,-5,-3,-34,-33,-28,-35,-29,-25,-39,0,0,0,-11,0,0,0,0,0,0,43,0,0,0,0,0,47,-4,-11,-29,0,0,0,-49,0,-17,0,-64,-10,-6,0,0,0,-8,0,0,0,0,0,-74,0,0,33,0,31,-310,-318,-334,-305,-435,-433,-412,-403,-459,-458,-654,-644,-577,-379,-325,-284,-288,-283,-274,-235,-279,-269,-459,-444,-425,-410,-406,-414,-370,-156,-662,-646,-616,-612,-734,-719,-897,-891,-801,-757]} 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. c4 Nf6 6. Nc3 O-O 7. cxd5 Nbd7 8. Bc4 {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 {The position is equal.} Nxe3 11. fxe3 Rxe3 12. Qd2 Re8 13. Rae1 Rxe1 14. Rxe1 $146 (14. Qxe1 {seems wilder.} Nf6 15. Ne5 Bd7 16. Qh4 Qe7 17. Nxd7 Qe3+ 18. Qf2) ({Predecessor:} 14. Qxe1 Nf6 15. Ne5 a6 {½-½ (85) Chudinovskih,A (2184)-Spiess,G (2414) Prague 2019}) 14... Nf6 15. Ne5 Bf5 16. h3 Bg6 17. a3 Nh5 18. g4 Nf6 $1 19. Qf2 a6 20. Re3 Nd7 21. Re2 b5 22. Ba2 Nf8 23. h4 (23. Ne4 $5 {[%cal Re5c6]}) 23... h5 24. g5 Qc8 25. Re3 Rb8 26. Nc6 (26. Ne4 $14) 26... Qg4+ $11 27. Qg2 (27. Kf1 $5 {[%cal Rc6b8]} Ra8 28. Bb3 $11) 27... Qf4 28. Qf2 {Black must now prevent Qxf4.} Qg4+ 29. Qg2 {aiming for Qxg4.} Qf4 30. Qf2 {Qxf4 is the strong threat.} Ra8 31. Ne2 (31. Bb3 $11) 31... Qxf2+ (31... Qg4+ $15 32. Kf1 Nd7) 32. Kxf2 f6 33. gxf6 gxf6 34. Kf3 Kf7 35. Nf4 Bc2 36. Ne6 Ng6 37. Ke2 (37. Ncd8+ $11 Kg8 38. Kf2) 37... Bf5 (37... Nxh4 $17 {And now ...Nf5 would win.} 38. Nxc7 Rh8) 38. Nxc7 Nf4+ 39. Kd1 Rg8 {[#] Hoping for ...Rg1+.} 40. Ne6 $2 {[%mdl 8192] [#]} (40. Re7+ $1 $14 {[%mdl 512] is the one way to stay ahead.} Bxe7 41. d6+ Ne6 42. dxe7) 40... Rg1+ $1 $19 41. Kd2 Rg2+ 42. Kc3 (42. Kd1 {was called for.} Rxb2 43. Ncd8+ Kg8 44. Nb7) 42... Ne2+ ({Less strong is} 42... Rc2+ 43. Kb3 $19) 43. Kd2 Nxd4+ 44. Kc3 Ne2+ 45. Kd2 (45. Rxe2 $142 Rxe2 46. Ned4 Re3+ 47. Kd2 Rd3+ 48. Ke2) 45... Nf4+ 46. Kd1 Bg4+ 47. Kc1 Ne2+ 48. Kd2 Nd4+ 49. Kc3 Nf5 50. Ned8+ Kf8 51. Re1 $2 (51. Re6 Rg3+ 52. Kd2) 51... Rg3+ 52. Kc2 Nxh4 53. Ne6+ Kg8 54. Ned4 Bd7 (54... Nf5 $19 55. Nxf5 Bxf5+ 56. Kd2 Kg7) 55. Re7 $2 (55. Rf1 $17) 55... Bxe7 {Black is clearly winning.} 56. d6+ Kf8 57. dxe7+ Ke8 58. Be6 Bxc6 59. Nxc6 Ng6 {Accuracy: White = 42%, Black = 57%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.3"]
[White "Cernousek, Lukas"]
[Black "Pribylova, Sofie"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2447"]
[BlackElo "2156"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,35,16,25,7,55,53,98,36,54,63,88,76,66,76,325,339,358,337,355,362,415,415,808,775,811,776,852,851]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qc2 (5. Qb3 Nb6 6. d4 Bg7 7. e4 Bg4 8. Bb5+ c6 9. Ng5 O-O 10. Be2 Bxe2 11. Nxe2 c5 12. dxc5 N6d7 13. Qxb7 Qa5+ 14. Bd2 Qa6 15. c6 Qxc6 16. Qxc6 Nxc6 {½-½ (91) Navara,D (2707)-Wei,Y (2725) Jerusalem 2019}) 5... Nc6 $146 ({Predecessor:} 5... Nb4 6. Qa4+ N8c6 7. d4 Bg7 {1-0 (13) Saric,A (2573)-Vujakovic,B (2347) Zagreb 2015}) 6. d4 {A16: English Opening: 1...Nf6 with ...d5} Bg7 7. e4 Ndb4 {[#]} 8. Qa4 (8. Qb3 $1 $16) 8... Bd7 $1 $14 9. Qb3 $1 {Threatens to win with d5.} (9. d5 $2 Nd4 $19) 9... Bxd4 {[#]} 10. Nd5 $1 {[%cal Rd5b4]} ({Don't blunder} 10. Nxd4 $2 Nxd4 11. Qd1 Ndc2+ 12. Ke2 Nxa1 $19) 10... Be6 {[%cal Rb4d5]} 11. Bc4 $1 $36 {[%mdl 2048] White has strong initiative.} ({Wrong is} 11. Nxd4 $2 Nxd4 12. Bb5+ (12. Qa4+ $2 Bd7 $19) 12... c6 $19) 11... Bc5 $2 (11... a5 $16) 12. a3 $18 Na5 13. Qc3 {[%mdl 64] Pin} Nc2+ 14. Qxc2 c6 15. Ba2 Bxf2+ (15... cxd5 $142 16. Qxc5 dxe4) 16. Qxf2 {White is clearly winning.} cxd5 17. exd5 Bxd5 18. Qd4 {[%mdl 64] Double Attack} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.4"]
[White "Budnikov, Oleg"]
[Black "Lys, Josef"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2432"]
[BlackElo "2152"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,89,28,28,39,31,39,39,38,30,31,22,25,25,20,0,-4,-4,-2,-1,-5,-7,-4,0,0,0,0,0,0,0,27,23,29,0,55,56,54,49,64,56,58,60,65,63,53,68,71,0,8,4,4,4,17,24,161,161,161,161,170,147,163,149,139,128,157,145,300,293,455,434,853,1112,1098,1129,1116,1082,920,698,565,502,422,345]} 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nf6 6. Na3 Bd7 {B22: Sicilian: 2 c3} (6... Nc6 7. Be3 cxd4 8. Nb5 Qd8 9. Nbxd4 Nd5 10. Bg5 f6 11. Nxc6 bxc6 12. Bd2 e5 13. Qc2 g6 14. Bd3 Bg7 15. O-O-O {1-0 (49) Giri,A (2769)-Alekseev,E (2620) Moscow 2019}) 7. Nb5 {Nc7+ is the strong threat.} Bxb5 8. Bxb5+ Nbd7 {White is slightly better.} 9. O-O cxd4 10. Qa4 a6 11. Nxd4 Bc5 12. Bc4 $146 (12. Be2 {is more complex.} Qe5 13. Bf3 Qc7 14. Qb3 Rb8 15. g3) ({Predecessor:} 12. Rd1 Bxd4 13. Bxd7+ Qxd7 14. Qxd7+ Nxd7 15. Rxd4 {½-½ (35) Bojkovic,N (2310)-Lukin,A (2445) Groningen 1991}) 12... Qe4 13. Qd1 Bxd4 14. cxd4 O-O 15. Be2 Qc6 16. Bf3 $36 {[%mdl 2048] White has good play.} Nd5 17. Qb3 N7b6 18. Bg5 Qb5 19. Rfc1 Rac8 20. Qxb5 axb5 21. Rc5 b4 (21... f6 $11 22. Be3 Rxc5 23. dxc5 Nc4) 22. b3 $14 Ra8 23. Bd2 Ra3 24. Rxd5 {Played: Bf3xd5} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.5"]
[White "Pniaczek, Marek"]
[Black "Low, Zhen Yu Cyrus"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "2145"]
[BlackElo "2415"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,113,33,27,33,30,26,0,0,0,0,-7,0,-6,3,-12,21,-8,0,-22,-9,-12,-7,-7,0,-6,-8,-58,-66,-51,-57,-90,-83,-90,-91,-114,-114,-107,-109,-108,-110,-112,-103,-103,-95,-97,-98,-103,-103,-103,-103,-221,-240,-233,-219,-271,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Qe2 Nxe4 6. Qxe4 Qa5 {B11: Caro-Kann: Two Knights Variation} 7. Bc4 Bf5 8. Qe5 Qxe5+ 9. Nxe5 e6 $1 10. c3 $146 ({Predecessor:} 10. Bd3 Bxd3 11. Nxd3 Bd6 12. b3 c5 13. Nb2 Nc6 14. Nc4 {0-1 (61) Nebolsina,V (2252)-Lupulescu,C (2643) Douglas 2019}) 10... Bd6 11. d4 a5 12. a4 Na6 13. Be3 Nc7 14. Bd3 (14. g4 {is interesting.} Be4 15. f3 Bd5 16. Be2 Bb3 17. h4) 14... Bxe5 15. Bxf5 exf5 16. dxe5 O-O-O 17. O-O Nd5 18. Rfe1 Nxe3 19. Rxe3 $15 {[%mdl 4096] Endgame KRR-KRR} Rd2 20. b4 Rhd8 21. Kf1 R8d3 22. Ke1 Rxe3+ 23. Kxd2 Rxe5 $17 {KR-KR} 24. Rb1 Kc7 25. g3 Re4 26. f3 Re6 27. Kd3 Re5 28. Kd2 h5 29. h4 Re6 30. f4 {[#]} (30. Kd3 $17) 30... Re4 $1 $19 31. Kd3 g6 32. bxa5 f6 $2 (32... Rxa4 $19 33. Re1 Kd7) 33. c4 $11 {The position is equal.} g5 34. fxg5 fxg5 35. Rf1 gxh4 36. Rxf5 Rg4 37. gxh4 Rxh4 38. Rf7+ Kb8 39. Kc3 Ka7 40. Kb4 Rh1 41. Rh7 h4 42. Rh8 h3 43. Kc5 Ra1 44. a6 b6+ 45. Kxc6 Rxa4 46. c5 Rc4 {[#]} 47. Kb5 $1 {[%csl Gb5][%cal Rc5b6][%mdl 512]} Rxc5+ 48. Kb4 Kxa6 49. Rxh3 Ra5 50. Rh8 Rg5 51. Ra8+ Kb7 52. Rh8 Rg6 53. Kb5 Rg7 54. Rh5 Rc7 55. Rh6 Rc5+ 56. Kb4 Ka6 57. Rh8 {Accuracy: White = 55%, Black = 75%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.6"]
[White "Lalic, Bogdan"]
[Black "Kakushadze, Ilia"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2402"]
[BlackElo "2149"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,47,26,30,-2,27,18,51,41,24,33,22,20,62,55,92,52,50,37,59,59,59,54,55,56,71,39,95,117,120,93,452,473,472,473,466,466,453,429,708,695]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 h6 5. Bxf6 Qxf6 6. Nbd2 {D30: Queen's Gambit Declined: Systems without Nc3} (6. e3 g6 7. Nbd2 Bg7 8. Bd3 Qe7 9. O-O O-O 10. Rc1 c6 11. Ne5 dxc4 12. Ndxc4 c5 13. Bxg6 fxg6 14. Nxg6 {1-0 (42) Aravindh,C (2605)-Giri,A (2769) Moscow 2019}) 6... Bb4 7. Rc1 Nc6 8. e3 {White is slightly better.} O-O 9. a3 Bxd2+ 10. Qxd2 Rd8 11. Qc3 Re8 $146 ({Predecessor:} 11... dxc4 12. Bxc4 Ne7 13. O-O b6 14. Be2 Nd5 15. Qc6 Bd7 16. Qc2 c5 {1-0 (42) Indjic,A (2630)-Anand,N (2373) Caleta 2019}) 12. cxd5 exd5 13. Bb5 Re6 14. O-O Qd8 15. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Bd7 16. Bd3 Rc8 17. Nd2 Qg5 (17... Ne7 $14) 18. b5 $16 {[#] Threatens to win with Nf3.} Ne7 19. Qa5 Rxe3 $2 {[%mdl 8192]} (19... Rb6 $16 {is a better chance.}) 20. fxe3 $18 {White is clearly winning.} Qxe3+ 21. Rf2 Qxd3 22. Rxc7 {[%mdl 64] [#] Double Attack} b6 23. Qxa7 Qxd4 (23... Be6 $142 24. Qxb6 Qxa3) 24. Rxc8+ {[%mdl 64] Pin. Accuracy: White = 60%, Black = 29%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.7"]
[White "Balinski, Damian"]
[Black "Quesada Vera, Liordis"]
[Result "1/2-1/2"]
[ECO "A57"]
[WhiteElo "2139"]
[BlackElo "2386"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,147,24,20,21,19,25,19,20,12,20,14,21,13,10,8,8,-43,-18,-18,8,8,18,0,27,-36,16,0,0,0,31,14,33,14,35,-18,0,-37,-37,-42,-38,-72,-19,-14,0,15,147,-88,-88,-83,-78,-112,-112,-226,-226,-226,-226,-226,-226,-226,-226,-226,-226,-226,-226,-226,-226,-223,-113,-216,-168,-226,-226,-226,-226,-219,-80,-80,-80,-87,-87,-87,-66,-110,-102,-102,-80,-80,-42,-80,-47,-80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 Bb7 5. a4 Qa5+ 6. Bd2 b4 7. Qc2 g6 {A57: Benko/Volga Gambit} 8. e4 d6 9. Bd3 Bg7 10. O-O Nbd7 11. Bf4 O-O 12. Nbd2 Nh5 13. Bg5 Rae8 {[#]} 14. g4 $146 ({White should try} 14. Be3 $11) ({Predecessor:} 14. Rae1 e5 15. g3 Bc8 16. Nh4 {1-0 (43) Georgiev,K (2676)-Tregubov,P (2628) Ohrid 2001}) 14... Nhf6 $15 15. h3 e6 16. Bf4 Qc7 17. Rae1 e5 18. Bg3 (18. Be3 $11) 18... Kh8 (18... h5 $15) 19. Kg2 Bc8 20. Rh1 Nb6 21. Nf1 h5 22. Ne3 Kg8 {[%cal Rh5g4]} 23. Nh2 (23. a5 $14 Na8 24. Be2) 23... Bh6 24. f3 Kg7 25. b3 Rh8 26. Rhf1 {[#]} Bf4 (26... Qe7 $1 $17) 27. Qb2 $1 $11 g5 28. Bxf4 exf4 {[#]} (28... gxf4 $11 29. Nf5+ Bxf5 30. exf5 hxg4 31. fxg4 Reg8) 29. Nf5+ $2 (29. h4 $1 $16 {is necessary to keep the advantage.}) 29... Bxf5 $1 $17 30. exf5 {Black must now prevent h4!} h4 31. Re4 Nbd7 $36 {[%mdl 2048] Keeping White busy.} 32. Rfe1 (32. Ree1 $17) 32... Ne5 $19 33. Rxe5 Rxe5 ({Don't play} 33... dxe5 34. Nf1 $17) 34. Rxe5 dxe5 35. Be4 Rb8 36. Nf1 Rb6 37. Nd2 Kg8 38. Qa1 Ra6 39. Qb2 Nd7 (39... Qe7 $19 40. Qa1 Kg7) 40. Kf2 (40. Bd3 $17) 40... f6 41. Ke2 (41. Bb1 {was worth a try.}) 41... Kf7 42. Kf2 Nb6 43. Bc2 e4 (43... Nc8 $19 44. Ne4 Nd6) 44. Nxe4 $17 Nd7 45. Kg2 Rb6 46. Bd3 Rb8 47. Bc2 Re8 48. Bd3 Re5 49. Qa1 Qb8 50. Qb2 Ke7 (50... a5 {with more complications.} 51. Qd2 Re8 52. d6 Re5 53. Bc2 Qe8) 51. Bc2 Rxe4 (51... Qd8 $17) 52. Bxe4 $11 {The position is equal.} Kd6 53. Kf2 Qe8 54. Ke2 Qe7 55. Qa1 Ne5 56. Qb2 Nf7 57. Qa1 Nd8 58. Qb2 Nb7 59. Kd2 Kc7 60. Kd3 Na5 61. Ke2 Qd6 62. Kd2 Nc6 63. Ke2 Na5 64. Kf2 Qe7 65. Ke2 Kd6 66. Ke1 Qe5 67. Qxe5+ Kxe5 {[%mdl 4096] Endgame KB-KN} 68. Bc2 Kd4 69. Kd2 a6 70. Bd1 Nb7 71. Be2 Nd6 72. Bd1 Nf7 73. Be2 Ne5 74. Bd1 {Accuracy: White = 53%, Black = 59%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.8"]
[White "Kozak, Antoni"]
[Black "Ochedzan, Tymon"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2380"]
[BlackElo "2140"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,110,37,20,68,59,66,72,84,85,101,90,93,45,76,72,79,87,100,102,87,85,89,92,114,54,122,116,123,128,127,113,134,131,166,166,166,166,166,166,166,166,184,175,160,160,159,126,127,120,139,139,145,145,197,177,187,105,89,84,203,202,254,222,222,214,295,216,239,238,335,312,963,945,1183,1156,1157,1151,1517,1480,2691,2514,29989,29990,29991,29989,29989,29990,29991,29991,29992,29993,29993,29994,29994,29995,29996,29997,29999]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. h3 Na6 7. Bg5 Qe8 8. g4 c5 {E90: King's Indian: Classical: Early deviations and 6 h3} 9. Qd2 cxd4 (9... b6 10. Rd1 cxd4 11. Nxd4 Bb7 12. f3 Nc5 13. Bh6 a6 14. Be2 Rd8 15. h4 e5 16. Nf5 Bxh6 17. Qxh6 Ne6 18. Nd5 Nxd5 19. cxd5 gxf5 20. gxf5 Kh8 21. Qf6+ Ng7 22. Rg1 Rg8 23. h5 {1-0 (23) Nepomniachtchi,I (2717)-Ponomariov,R (2756) Riga 2013}) 10. Nxd4 b6 $146 {White is better.} ({Predecessor:} 10... Nc5 11. f3 Qd8 12. Be3 a6 13. Be2 Re8 14. Rd1 b6 15. b4 Ncd7 16. h4 {1-0 (31) Lysyj,I (2612)-Klimov,S (2501) St Petersburg 2009}) 11. O-O-O Nc5 {[#]} 12. f3 $1 Ne6 13. Nxe6 Bxe6 14. Kb1 Rc8 15. Nd5 Bxd5 16. cxd5 Rc5 17. h4 Qa4 18. Bd3 Rfc8 19. a3 (19. h5 $16) 19... Qb3 ({Black should try} 19... a5 $14) 20. Qb4 $16 Qxb4 21. axb4 R5c7 22. Ba6 $36 {[%mdl 2048] Black is under strong pressure.} Ra8 23. Rc1 Rxc1+ 24. Rxc1 ({Don't take} 24. Bxc1 $6 Rf8 $16) 24... h6 25. Be3 Ne8 26. Ka2 Kf8 27. Kb3 e6 28. dxe6 fxe6 29. Bc4 Ke7 30. Ra1 Nc7 31. Bd3 e5 32. b5 Kd7 33. Bc4 Rf8 (33... Kc8 $16 34. Bf7 Kb7) 34. Kc2 $18 Ra8 35. Bf7 (35. g5 $18 hxg5 36. hxg5 (36. Bxg5 Bf8 $16)) 35... Nxb5 $16 36. Bxg6 Rc8+ (36... Nd4+ $16 37. Kd3 Nc6) 37. Kd3 $18 {[#] Hoping for Bf5+.} Rc7 38. g5 hxg5 39. hxg5 Kc8 40. Rh1 {Be8 is the strong threat.} Re7 41. Bf5+ Kb7 (41... Kd8 $142 42. Rh6 Kc7) 42. Rh7 Nc7 $2 (42... Bf8 43. g6 Rxh7 44. gxh7 Bg7) 43. g6 Ne8 44. Bg5 Rc7 45. Bd8 Rc1 46. Bd7 Ka8 47. Bxe8 Rc8 48. Rxg7 {White mates.} Rxd8 {[%mdl 4096] Endgame KRB-KR} 49. Bc6+ Kb8 50. Kc4 a6 51. Kd5 Rf8 52. Rf7 Rd8 53. g7 Rg8 54. Rf8+ Rxf8 55. gxf8=Q+ Ka7 56. Qa8# {Accuracy: White = 74%, Black = 36%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.9"]
[White "Eriksson, Christian Altenburg"]
[Black "Neuman, Petr"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2121"]
[BlackElo "2371"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,0,0,-1,8,41,42,12,16,4,36,22,33,28,17,20,39,27,58,69,33,-21,-27,-14,33,-17,18,18,18,18,18,9,18,10,20,21,26,18,17,18,18,23,58,1,4,0,0,0,0,0,0,-6,0]} 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 d6 5. Bc4 (5. d4 cxd4 6. cxd4 Nc6 7. Bc4 e6 8. O-O Be7 9. Bd2 O-O 10. Nc3 Nxc3 11. Bxc3 dxe5 12. dxe5 Qxd1 13. Rfxd1 Rd8 14. Rxd8+ Bxd8 15. Rd1 Be7 16. Bd3 Kf8 {1-0 (56) Mamedov,R (2659)-Dubov,D (2690) Moscow 2019}) 5... Nb6 6. Bb3 {B22: Sicilian: 2 c3} c4 7. Bc2 Bg4 8. exd6 {White is slightly better.} (8. h3 $5 {[%cal Rh3g4]} Bh5 9. exd6 $11) 8... Qxd6 9. O-O Nc6 10. Re1 $146 {[#]} ({Predecessor:} 10. h3 Bh5 11. b3 Qd5 12. Re1 Bxf3 13. Qxf3 Qxf3 14. gxf3 O-O-O 15. a4 e6 16. a5 cxb3 17. axb6 bxc2 18. bxa7 Nxa7 {0-1 (37) Groeger,S (2150)-Schuetze,N (2282) Germany 2018}) 10... Ne5 $1 {[%mdl 512]} 11. Rxe5 {Ra5 is the strong threat.} Bxf3 $1 12. Qe1 Bd5 13. b3 f6 14. Re3 Qc6 15. Be4 ({Better is} 15. Na3 $14) 15... e5 $11 16. Ba3 Bc5 (16... Rd8 {with more complications.} 17. Bxf8 Kxf8 18. Na3 Kf7 19. h3 Rhe8) 17. Bxd5 Qxd5 18. Bxc5 Qxc5 19. d4 cxd3 20. Rxd3 O-O 21. Qd2 Qe7 22. c4 Rad8 23. Nc3 Rxd3 24. Qxd3 Rd8 25. Qf3 Rd2 26. g3 (26. Ne4 $14 Rd4 27. Rd1) 26... Qd7 {[#] White must now prevent ...Rd3.The position is equal.} 27. Rd1 Rxd1+ 28. Qxd1 Qxd1+ 29. Nxd1 Kf7 30. Nc3 Ke6 {Accuracy: White = 54%, Black = 53%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.10"]
[White "Peng, Hongchi"]
[Black "Kristiansen, Willy M"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2362"]
[BlackElo "2137"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,74,15,20,-25,-8,-11,0,0,0,0,0,0,3,-42,-39,-89,-14,-10,11,16,48,29,34,46,41,47,46,42,41,44,27,27,52,47,36,36,29,16,6,16,139,125,674,571,563,463,455,460,443,403,357,357,357,357,331,348,324,333,29989,29990,29990,29991,29997,29998,29999]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. O-O d6 6. c3 O-O 7. d4 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5} Bb6 8. a4 $146 {[%cal Ba2a4,Ba4a5][%mdl 32] Hoping for Bxc6.} ({Predecessor:} 8. Qd3 exd4 9. cxd4 Bg4 10. Bxc6 bxc6 11. Nc3 Bxf3 12. gxf3 Qd7 13. Kh1 Nh5 14. Rg1 Qh3 {0-1 (48) Polgar,J (2711)-Anand,V (2792) Reykjavik 2006}) 8... a6 (8... Nxe4 9. Bxc6 bxc6 10. a5 $16) 9. Bxc6 $1 {The position is equal.} bxc6 10. a5 Ba7 11. dxe5 Nxe4 12. Qa4 (12. Nbd2 $5 {[%cal Rd2e4]} Bf5 13. Nxe4 Bxe4 14. Re1 $11) 12... Nc5 13. Qc2 f6 ({Black should try} 13... dxe5 $1 $17 {next ...Qd3 is good for Black.} 14. Be3 Qd3) 14. exd6 $11 cxd6 15. Be3 Qc7 16. Nbd2 Be6 17. b4 Nd7 18. Bxa7 Rxa7 19. Rfe1 Bf7 20. Re7 Qd8 21. Rae1 Ra8 22. R7e3 c5 23. Ne4 {[%cal Bd2e4,Be4g3,Bg3f5,Bf5h6,Bh6g4][%mdl 32]} Qc7 24. Qd2 d5 25. Ng3 $36 {[%mdl 2048] White has good play.} g6 (25... Qf4 $1 $11 {remains equal.}) 26. Re7 $16 {And now Nh4 would win.} Qd6 $2 {[%mdl 8192]} (26... cxb4 $16 27. cxb4 Rae8) 27. Nh4 (27. Qh6 Rfe8 $16) 27... f5 {intending ...f4.} 28. bxc5 Nxc5 29. Nhxf5 (29. Qh6 Ne4 $16) 29... gxf5 30. Nxf5 Qf6 31. Nh6+ $1 Kg7 {[#] ...Ne4 is the strong threat.} 32. Ng4 $1 {[%cal Rg4f6]} ({Weaker is} 32. Nxf7 Ne4 $16) ({Worse is} 32. Rxf7+ Rxf7 33. Nxf7 Ne4 $11) 32... Nb3 33. Qe3 ({Stronger than} 33. Nxf6 Nxd2 34. Nxd5 Rae8 $17) 33... Qd6 {[#]} 34. Qg5+ $1 Kh8 $2 {[#]} (34... Qg6 $18 35. Qe5+ Kg8 36. Nf6+ {[%mdl 64] Double Attack} Kh8 37. Nxd5+ Qg7) 35. R1e6 $1 {[%mdl 576] Decoy. White mates.} Qxe6 36. Rxe6 Bxe6 37. Qe5+ {[%mdl 64] Double Attack} Kg8 38. Nh6# {Accuracy: White = 76%, Black = 40%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.11"]
[White "Mis, Mieszko"]
[Black "Hrbek, Stepan"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2349"]
[BlackElo "2126"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,128,23,20,16,11,10,20,10,10,14,14,14,10,8,15,12,11,0,0,-24,-2,-15,-14,-54,-56,-46,-45,-63,-62,-86,-64,-96,-94,-117,-132,-114,-93,-89,-70,-118,-116,-338,-321,-315,-276,-275,-273,-344,-269,-277,-279,-283,-283,-283,-278,-283,-268,-268,-268,-268,-268,-268,-268,-268,0,-268,0,-275,-275,-268,-268,-275,-268,-268,-275,-275,-269,-275,-268,-268,-268,-268,-268,-298,-303,-300,-289,-304,-170,-223,-130,-149,-129,-145,-145,-455,-468,-836,-787,-2900,-3613,-2733,-1744,-3235,-2700,-29961,-29963,-29965,-29963,-29976,-29977,-29982,-29982,-29987,-71,-29988,-29989,-29989,-29990]} 1. Nf3 ({Predecessor:} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 {½-½ (22) Yuffa,D (2577)-Potkin,V (2583) Sochi 2019}) 1... d5 2. d4 Nf6 3. g3 e6 4. c4 dxc4 5. Bg2 a6 6. O-O Nc6 7. Bg5 $146 {E04: Open Catalan: 5 Nf3} (7. Nbd2 b5 8. b3 Rb8 9. Bb2 cxb3 10. Nxb3 Be7 11. Rc1 Bb7 12. Ne1 Na7 13. Bxb7 Rxb7 14. Nd3 O-O {½-½ (41) Vidit,S (2722)-Nakamura,H (2741) Kolkata 2019}) 7... Be7 8. e3 O-O 9. Nbd2 {The position is equal.} e5 $1 {[%cal Re5d4]} 10. Nxc4 exd4 $1 11. Nxd4 Nxd4 12. Qxd4 Qxd4 13. exd4 h6 14. Bf4 Be6 15. Na5 Nd5 16. Bd2 Bf6 17. Rad1 Rab8 ({Much weaker is} 17... Bxd4 18. Bxh6 $1 {[%mdl 512]} Bb6 19. Nc4 $14 (19. Bxd5 Bxa5 20. Bxe6 gxh6 $11) (19. Nxb7 gxh6 20. Bxd5 Rab8 $11)) 18. Rfe1 Rfd8 19. Bc3 c6 20. Nb3 b6 ({Much worse is} 20... Nxc3 $6 21. bxc3 Bg4 22. Rc1 $11) 21. Rc1 a5 {[%cal Ba6a5,Ba5a4][%mdl 32]} 22. Red1 a4 23. Nd2 Nxc3 24. bxc3 c5 25. dxc5 bxc5 26. a3 $2 (26. Bc6 $17) 26... Bb3 $19 27. Nxb3 Rxd1+ ({Worse is} 27... Rxb3 28. Rxd8+ Bxd8 29. Re1 $11) 28. Rxd1 axb3 {[%mdl 4096] Endgame KRB-KRB} 29. Bd5 Bxc3 30. Kf1 b2 {White must now prevent ...Rd8.} 31. Be4 g6 32. Bc2 Re8 33. a4 c4 34. Bb1 Bf6 35. Re1 Rd8 36. Ke2 Bc3 {And now ...Re8+ would win.} 37. Rd1 Re8+ 38. Kf1 $1 Bf6 39. Re1 $1 {[%cal Re1e8]} Ra8 40. Bc2 Rd8 41. Ke2 Bc3 {...Re8+ is the strong threat.} 42. Rd1 Re8+ 43. Kf1 Kf8 44. Bb1 Bf6 45. Bc2 c3 46. Bb1 h5 47. h4 Re6 48. Bc2 Ke7 49. Bb1 {If White can now play Re1 this consolidates a bit.} Bg7 (49... Rc6 $142 {Strongly threatening ...c2!} 50. Bc2 Rc4) 50. Bc2 (50. Re1 $142) 50... Bh6 ({Better is} 50... Kf6 $19 51. Rd5 Re7) 51. Re1 $17 Rxe1+ $1 52. Kxe1 {KB-KB} Kd6 53. Bb1 $2 {[%mdl 8192]} (53. a5 $17 {nothing else works.}) 53... Kc5 $19 54. Kd1 (54. Ke2 $142 Bg7 55. Kd3) 54... Kb4 55. Kc2 Bd2 56. Ba2 f6 57. Bf7 Kxa4 58. Bxg6 Ka3 $1 {[%cal Ra3a2]} 59. Bf7 Be1 60. f3 Bxg3 61. Kb1 Bxh4 62. Bxh5 {[#]} c2+ $1 {[%mdl 64] Deflection, Promotion} 63. Kxc2 {[#]} Ka2 $1 64. Bf7+ Ka1 {Accuracy: White = 40%, Black = 82%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.12"]
[White "Saglam, Buelent"]
[Black "Priehoda, Vitezslav"]
[Result "1/2-1/2"]
[ECO "E43"]
[WhiteElo "2118"]
[BlackElo "2341"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,91,0,-4,11,-15,11,2,-18,-16,0,0,0,0,0,0,0,0,0,0,22,-31,-29,-41,-30,-39,-33,-126,-42,-72,-60,-58,-46,-92,6,0,19,-137,-145,-160,-169,-238,-230,-240,-180,-183,-181,-175,-166,-177,-173,-689,-372,-361,-216,-204,-201,-218,-137,-203,-122,-123,-28,-40,-8,-10,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. Qc2 d5 8. O-O Nbd7 {E43: Nimzo-Indian: Rubinstein: 4...b6} (8... dxc4 9. Bxc4 Nbd7 10. Rd1 Qe7 11. a3 Bxc3 12. Qxc3 c5 13. b4 Ne4 14. Qb3 Nd6 15. dxc5 Nxc4 {½-½ (15) Aleksandrov,A (2596)-Zhigalko,S (2655) Minsk 2016}) 9. a3 Be7 10. b3 dxc4 $146 ({Predecessor:} 10... c5 11. Re1 Rc8 12. Ne2 b5 13. Bd2 bxc4 14. bxc4 cxd4 15. Nfxd4 dxc4 16. Bxc4 Bd5 17. Rec1 Rxc4 {0-1 (32) Faqeeh,A (1488)-Romero Echeverria,A (2106) Baku 2016}) 11. bxc4 c5 12. d5 exd5 13. cxd5 c4 14. Bf5 Nc5 ({But not} 14... Nxd5 $6 15. Nxd5 Bxd5 16. Rd1 $16 (16. Bxh7+ Kh8 $11)) 15. e4 g6 16. Bh3 Re8 17. Re1 (17. Be3 $1 $11) 17... Nd3 $36 {[%mdl 2048] Black fights for an advantage.} 18. Re2 Nh5 19. g3 $1 Bf6 20. Ra2 (20. Bd2 $15) 20... a6 ({Black should play} 20... Bxc3 $1 $17 21. Qxc3 Qf6 22. Qxf6 Nxf6) 21. Ne1 Nxc1 22. Qxc1 b5 23. Nf3 Qc7 (23... Bg7 $1 $17 24. Qe1 Nf6) 24. Bg2 $11 Rad8 {[#]} 25. Qe1 $2 (25. e5 $1 $11 {[%mdl 512]} Rxe5 (25... Bxe5 26. Nxe5) 26. Nxe5 Bxe5 27. Qe3) 25... Bg7 $17 26. h3 Qa5 27. Nb1 (27. Nd1 $142 Qb6 28. Kh2) 27... Qxe1+ $19 28. Nxe1 f5 29. exf5 gxf5 30. Rxe8+ Rxe8 31. Nc2 f4 32. a4 $2 (32. d6 f3 33. Bf1) 32... fxg3 {aiming for ...b4!} 33. axb5 gxf2+ (33... axb5 $142 34. d6 {[#]} b4 $1 {[%mdl 512]}) 34. Kxf2 axb5 {Threatens to win with ...Nf4.} 35. Ra7 Ba8 36. Ra5 (36. d6 $17 {is a better defense.} Rf8+ 37. Kg1 Bxg2 38. Kxg2) 36... Nf4 37. Rxb5 Re2+ ({Black should try} 37... Rd8 $17 38. Bh1 Bf6) 38. Kf3 $11 Rxg2 39. Ne3 {The position is equal.} Rb2 40. Rxb2 Bxb2 41. Kxf4 {KBB-KNN} Bc1 42. Nc3 Bd2 43. Ne4 c3 {Strongly threatening ...c2.} 44. Nxd2 cxd2 45. Ke4 Kf7 46. Kd4 {Accuracy: White = 41%, Black = 43%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.13"]
[White "Domogaev, Sergey"]
[Black "Sindler, Michal"]
[Result "1-0"]
[ECO "E76"]
[WhiteElo "2334"]
[BlackElo "2119"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,75,0,20,-7,-18,-19,-17,-10,-31,-108,-105,-106,-96,-154,-145,-158,-138,-147,-114,-108,-60,-92,-38,-53,-37,-52,225,249,262,252,262,258,266,256,217,204,208,215,239,247,461,463,461,447,460,452,483,483,450,250,233,226,606,599,29994,29995,29995,29996]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. d5 O-O 7. Bd3 e6 8. dxe6 fxe6 9. Nf3 Nc6 10. O-O Nh5 11. g3 {E76: King's Indian: Four Pawns Attack: Lines specific to 6 Nf3 move-order} b6 12. f5 exf5 13. exf5 {The position is equal.} gxf5 {[#]} ({Much weaker is} 13... Bxf5 $6 14. Bxf5 Rxf5 15. g4 $16) 14. Ng5 $146 (14. Nh4 $15 Bd4+ 15. Kh1) ({Predecessor:} 14. Nd5 Qd7 15. Nh4 Bd4+ 16. Be3 Ng7 17. g4 {0-1 (31) Turov,M (2591)-Hillarp Persson,T (2544) Stockholm 2015}) 14... Bd4+ $17 15. Kg2 Ng7 16. h3 (16. Nd5 $142) 16... Ne5 {[%cal Bc6e5,Be5g6,Bg6f4,Bf4e2][%mdl 32]} 17. Be2 Bb7+ 18. Kh2 Ng6 19. Bf3 Rb8 20. Nb5 f4 ({Black should play} 20... Qf6 $17) 21. gxf4 $1 $15 Nxf4 22. Bxb7 Qxg5 $4 {[%mdl 8192] [#]} (22... Be5 $1 $15 {stays ahead.} 23. Bxf4 Rxf4 24. Rxf4 Qxg5 {[%mdl 64] Pin} 25. Bd5+ Kh8) 23. Bd5+ $1 $18 {[%mdl 512]} Kh8 {White must now prevent ...Be5!} (23... Nxd5 24. Rxf8+) 24. Nxd4 cxd4 25. Qxd4 {[%cal Rc1f4]} Qg3+ 26. Kxg3 Ne2+ 27. Kg2 Nxd4 {[#]} 28. Bd2 $1 Ndf5 29. Rae1 Rbe8 $2 (29... Nh4+ 30. Kg1 Ng6) 30. Bc3 Rxe1 31. Rxe1 h6 32. Kh2 Kh7 33. Be4 Nh5 34. Bd3 (34. Bc2 $142) 34... Nf4 35. Bc2 {And now Rf1 would win.} Kg6 $2 (35... Ng6 36. Re6 Nf4 37. Rxd6 Kg8) 36. Rg1+ Kh5 37. Bd1+ Kh4 38. Rg4+ {[%mdl 64] Double Attack. Accuracy: White = 63%, Black = 17%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.14"]
[White "Niechotz, Christopher"]
[Black "Vokac, Marek"]
[Result "0-1"]
[ECO "A26"]
[WhiteElo "2107"]
[BlackElo "2334"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,84,27,26,30,7,20,24,30,20,25,29,41,12,23,0,29,21,10,9,25,0,3,8,10,10,15,0,11,11,33,10,8,9,20,14,41,37,29,30,59,-51,-50,-51,-56,-48,-57,-74,-61,-109,-12,-13,-12,-27,-12,-15,-8,-10,0,-102,-107,-147,-137,-497,-520,-560,-552,-827,-827]} 1. c4 g6 2. g3 Bg7 3. Bg2 e5 4. Nc3 Nc6 5. d3 d6 6. Rb1 a5 7. a3 {[%cal Ba2a3,Ba3b4,Bb4b5,Bb5b6][%mdl 32]} Nf6 8. e4 O-O 9. Nge2 Be6 10. O-O Qd7 {A24: English Opening vs King's Indian: Lines without ...Nc6} 11. b4 axb4 12. axb4 Nh5 {White has an edge.} (12... Bh3 13. b5 Ne7 14. Bg5 Bxg2 15. Kxg2 c6 16. Qb3 h6 17. bxc6 bxc6 18. Bxf6 Bxf6 {0-1 (34) Toh,T (2410)-Bui,V (2485) Singapore 2006}) 13. b5 Nd8 $146 ({Predecessor:} 13... Ne7 14. Bb2 c6 15. f4 exf4 16. Nxf4 Nxf4 17. gxf4 d5 18. cxd5 cxd5 {½-½ (69) Borek,J (2105)-De Jong,M (2275) Groningen 1994}) 14. Nd5 f5 15. b6 c6 16. Nc7 Rc8 (16... Rb8 {feels hotter.} 17. Nxe6 Nxe6 18. exf5 gxf5 19. Bb2 Qf7) 17. Nxe6 Nxe6 18. exf5 gxf5 19. f4 exf4 20. Nxf4 Nhxf4 21. Bxf4 Rce8 22. Qh5 Bd4+ 23. Kh1 Ng7 24. Qf3 (24. Qh4 {with more complications.} Qe6 25. Bg5 Qe5 26. Bh3 Re6 27. Rf4) 24... Re6 25. Bh3 Qd8 26. Bd2 Rg6 27. Be3 Qf6 28. Qf2 Ne6 29. Bxf5 (29. Bxd4 $14 Nxd4 30. Qb2) 29... Qxf5 $15 30. Qxf5 Rxf5 31. Rxf5 {[#] Hoping for Bxd4.} Bxe3 32. Ra5 Rf6 33. Ra8+ Kg7 ({Better is} 33... Kf7 $17 34. Ra2 Bd4) 34. Rb8 $1 $11 {[%cal Rb8b7]} Nc5 35. Re1 $1 {[%cal Re1e3]} Bd4 36. Re7+ Kg6 37. Rg8+ Kh6 38. Kg2 (38. g4 $11 {remains equal.} Rg6 39. Rxg6+ Kxg6 40. h4) 38... Rf2+ $17 ({Reject} 38... Nxd3 $6 39. Rxb7 Rf2+ 40. Kh3 $11) 39. Kh3 {[#]} Be5 $1 40. Rxe5 $2 {[%mdl 8192]} (40. Ree8 $17 {is tougher.}) 40... dxe5 $19 {Black is clearly winning.} 41. g4 Nxd3 42. Kg3 e4 {Accuracy: White = 33%, Black = 35%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.15"]
[White "Liu, Zhaoqi"]
[Black "Adamko, Peter"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2328"]
[BlackElo "2082"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,75,0,2,22,19,16,5,32,-39,6,0,0,0,0,0,0,0,35,-54,-39,-47,-53,-46,-44,-50,-18,-25,-12,-14,-8,-12,0,0,42,23,238,237,247,233,245,241,281,279,559,548,504,481,567,567,817,816,827,810,829,822,1222,1108,6004,6004,5622,5485,2731,2368,29991,29992]} 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e4 d6 5. d4 Bg4 6. d5 Nd4 7. Be3 Nxf3+ {A28: English Opening: Four Knights Variation} 8. gxf3 Bd7 9. Qd2 (9. Qb3 b6 10. h4 g6 11. Bh3 Bg7 12. Bxd7+ Qxd7 13. Qb5 Qxb5 14. cxb5 Kd7 15. Rc1 {1-0 (35) Nepomniachtchi,I (2767)-Postny,E (2605) Moscow 2019}) 9... Nh5 {The position is equal.} 10. Be2 (10. Ne2 $14) 10... h6 11. Rg1 $146 ({Predecessor:} 11. f4 Nxf4 12. Bxf4 exf4 13. Qxf4 Be7 14. Bg4 Bg5 15. Bxd7+ Qxd7 {0-1 (35) Budt,K-Schmidt,M Germany 1985}) 11... g5 12. O-O-O Nf4 13. Kb1 a6 14. Rc1 f6 15. b4 ({White should try} 15. h4 $14) 15... a5 $15 16. a3 axb4 17. axb4 b6 18. Kb2 Be7 19. Ra1 Kf7 20. Nb5 Rxa1 21. Rxa1 Qb8 22. Bf1 Qb7 23. Qc3 Rc8 $2 (23... Qb8 $11 {and Black stays safe.}) 24. Ra7 $18 Qb8 {[#] aiming for ...Bxb5.} 25. Qa3 $1 Bxb5 26. cxb5 Re8 27. Qa6 Kg6 $2 (27... Qc8 28. Bxf4 exf4 29. Qxc8 Rxc8) 28. Rb7 Qc8 29. Qa7 Bd8 {[#]} 30. Bxb6 $1 {[%mdl 512]} Re7 (30... cxb6 31. Rg7+) 31. Be3 g4 32. b6 gxf3 33. Qb8 {Played: Rb7-b8} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "2.16"]
[White "Tsotsonava, Elene"]
[Black "Nasshan, Dennis"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2078"]
[BlackElo "2307"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,78,16,9,-3,0,0,0,0,-2,0,0,0,14,4,9,-19,-21,-85,-22,-16,0,0,0,-122,-26,-80,-33,-67,-30,-64,-49,-45,-41,-47,8,-68,-27,-51,-37,-90,-97,-121,-95,-115,-99,-175,-168,-369,-222,-247,-252,-243,-238,-495,-480,-507,-506,-754,-689,-694,-690,-1091,-1070,-29998,-29999]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. c4 e6 6. Nc3 Ne7 7. Bg5 dxc4 8. Bxc4 Nd7 9. a3 {B12: Caro-Kann: Advance Variation} (9. Nge2 Nb6 10. Bb3 Qd7 11. Qd2 Ned5 12. Rd1 Be7 13. Ng3 Bg6 14. Bxe7 Qxe7 15. Nce4 O-O-O 16. Nd6+ Kb8 {½-½ (43) McShane,L (2674)-Shimanov,A (2593) Las Vegas 2015}) 9... f6 10. exf6 gxf6 11. Bf4 {The position is equal.} Nb6 12. Be2 Bg6 $146 ({Predecessor:} 12... Ned5 13. Bxh5+ Kd7 14. Bc1 Bd6 {½-½ (29) Cvak,R (2248)-Viviani,E (2149) ICCF email 2015}) 13. Bf3 Ned5 14. Nge2 Qd7 15. Ne4 O-O-O $36 {[%mdl 2048] Black has some pressure.} 16. Bg3 (16. Bh2 $11) 16... Bxe4 (16... Qh7 $17 17. Qc2 Be7) 17. Bxe4 $11 Bd6 18. Bxd6 Qxd6 19. b4 (19. Qc2 $11) 19... Nf4 (19... f5 $17 20. Bxd5 Nxd5) 20. O-O (20. Bf3 $11 {keeps the balance.}) 20... Kb8 21. a4 Nbd5 22. Bf3 Nxe2+ 23. Qxe2 Nf4 24. Qc2 Rdg8 ({Of course not} 24... Qxb4 $6 25. Rab1 $16) (24... Rhg8 $15 25. g3 Qxd4) 25. Qc5 ({White should play} 25. Kh1 $11) 25... Qxc5 (25... Nh3+ {is more complex.} 26. Kh1 Qf4 27. Ra3 Qxh4 28. Qd6+ Ka8) 26. dxc5 Ng6 27. g3 (27. Ra3 $15) 27... Nxh4 $1 $17 28. Be2 Nf5 29. Bc4 Nd4 30. Rfd1 (30. Kg2 $17 {was necessary.}) 30... Rg4 $19 31. Kf1 $2 (31. Kg2 {is a better defense.}) 31... e5 {Hoping for ...Nc2.} 32. Ra3 h4 {And now ...hxg3 would win.} 33. Kg2 hxg3 34. fxg3 $2 (34. Rxg3 Rgh4 35. Rg6) 34... Nc2 {[%mdl 64] [#] Discovered Attack} 35. Be6 Rxb4 (35... Nxa3 $2 36. Bxg4 Nc2 37. Rb1 $19) 36. Rf3 Rb2 {Played: Nc2-d4} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.1"]
[White "Nasshan, Dennis"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "0-1"]
[ECO "A62"]
[WhiteElo "2307"]
[BlackElo "2491"]
[Annotator "RC"]
[PlyCount "104"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 2. c4 {[%emt 0:00:00]} c5 {[%emt 0:13:46]} 3. d5 {[%emt 0:00:00]} e6 {[%emt 0:00:05]} 4. Nc3 {[%emt 0:00:07]} exd5 {[%emt 0:00:05]} 5. cxd5 {[%emt 0:00:07]} d6 {[%emt 0:00:04]} 6. Nf3 {[%emt 0:02:43]} g6 {[%emt 0:00:24]} 7. g3 {[%emt 0:00:25]} Bg7 {[%emt 0:00:05]} 8. Bg2 {[%emt 0:00:07]} O-O {[%emt 0:00:06]} 9. O-O {[%emt 0:00:04]} Re8 {[%emt 0:01:24]} 10. Nd2 {[%emt 0:00:07]} Nbd7 {[%emt 0:02:03]} 11. h3 {[%emt 0:00:08]} a6 {[%emt 0:00:25]} 12. a4 {[%emt 0:00:06]} Rb8 {[%emt 0:00:59]} 13. Nc4 {[%emt 0:00:15]} Ne5 {[%emt 0:01:40]} 14. Na3 {[%emt 0:01:09]} Nh5 {[%emt 0:00:50]} 15. e4 {[%emt 0:00:15]} Bd7 {[%emt 0:02:37]} 16. a5 {[%emt 0:01:52]} b5 {[%emt 0:03:42]} 17. axb6 {[%emt 0:00:17]} Bb5 {[%emt 0:00:05]} 18. Naxb5 {[%emt 0:00:07]} axb5 {[%emt 0:00:05]} 19. Nxb5 {[%emt 0:00:04]} Qxb6 {[%emt 0:00:09]} 20. Nc3 {[%emt 0:00:08]} Nc4 {[%emt 0:01:15]} 21. Ra2 {[%emt 0:13:58]} Qb3 {[%emt 0:11:14]} 22. Qxb3 Rxb3 23. g4 {[%emt 0:10:40]} Nf6 {[%emt 0:00:41]} 24. f4 {[%emt 0:00:52]} Reb8 {[%emt 0:05:59]} 25. Rf2 {[%emt 0:19:14]} Nd7 {[%emt 0:00:56]} 26. Rc2 {[%emt 0:08:59]} Bd4+ {[%emt 0:32:33]} 27. Kh2 {[%emt 0:03:25]} Be3 {[%emt 0:00:37]} 28. Bxe3 {[%emt 0:14:41]} Nxe3 {[%emt 0:00:28]} 29. Re2 {[%emt 0:00:07]} Nc4 {[%emt 0:00:37]} 30. Nd1 {[%emt 0:04:02]} g5 {[%emt 0:01:29]} 31. Rc2 {[%emt 0:03:37]} Ne3 {[%emt 0:08:55]} 32. Nxe3 Rxe3 {[%emt 0:00:02]} 33. Ra7 {[%emt 0:05:05]} Rd8 {[%emt 0:00:29]} 34. fxg5 {[%emt 0:01:08]} Rb3 {[%emt 0:00:33]} 35. Bf1 {[%emt 0:04:54]} Ne5 {[%emt 0:00:13]} 36. Ra3 {[%emt 0:01:41]} Rb4 {[%emt 0:02:11]} 37. Bg2 {[%emt 0:01:44]} Rdb8 {[%emt 0:01:22]} 38. Ra6 {[%emt 0:01:29]} R4b6 {[%emt 0:01:22]} 39. Rxb6 Rxb6 {[%emt 0:00:01]} 40. Bf1 {[%emt 0:03:50]} Rb3 {[%emt 0:07:56]} 41. Bc4 {[%emt 0:10:25]} Re3 {[%emt 0:00:56]} 42. b3 {[%emt 0:01:58]} Nf3+ {[%emt 0:00:49]} 43. Kh1 {[%emt 0:00:54]} Nxg5 {[%emt 0:00:12]} 44. Re2 {[%emt 0:05:09]} Rxh3+ {[%emt 0:04:26]} 45. Kg2 {[%emt 0:00:35]} f6 {[%emt 0:01:14]} 46. Ra2 {[%emt 0:00:23]} Re3 {[%emt 0:01:29]} 47. Ra8+ {[%emt 0:02:50]} Kg7 {[%emt 0:01:54]} 48. Ra7+ {[%emt 0:00:19]} Kh6 {[%emt 0:00:12]} 49. Rd7 {[%emt 0:03:15]} Nxe4 {[%emt 0:01:01]} 50. Re7 {[%emt 0:00:06]} Kg5 {[%emt 0:03:57]} 51. Rxh7 {[%emt 0:01:28]} Kxg4 {[%emt 0:00:08]} 52. Rg7+ {[%emt 0:00:13]} Kf4 {[%emt 0:00:07]} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.2"]
[White "Stankovic, Milos"]
[Black "Svanda, Ondrej"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "2466"]
[BlackElo "2257"]
[Annotator "ChessBase"]
[PlyCount "62"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:40]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:33]} e6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:32]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:28]} Nc6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:38]} Qc7 {[%emt 0:00:04]} 6. f4 {[%emt 0:01:22]} a6 {[%emt 0:00:18]} 7. Nxc6 {[%emt 0:01:30]} bxc6 {[%emt 0:00:12]} 8. Bd3 {[%emt 0:00:45]} d5 {[%emt 0:00:37]} 9. O-O {[%emt 0:01:17]} Nf6 {[%emt 0:00:08]} 10. Qf3 {[%emt 0:00:37]} Be7 {[%emt 0:00:34]} 11. Kh1 {[%emt 0:00:31]} O-O {[%emt 0:06:01]} 12. Bd2 {[%emt 0:01:27]} Re8 {[%emt 0:00:17]} 13. Rae1 {[%emt 0:03:28]} Bf8 {[%emt 0:07:49]} 14. Qg3 {[%emt 0:08:42]} g6 {[%emt 0:06:32]} 15. b3 {[%emt 0:13:48]} Bg7 {[%emt 0:09:20]} 16. e5 {[%emt 0:04:12]} Nd7 {[%emt 0:01:33]} 17. h4 {[%emt 0:00:23]} a5 {[%emt 0:04:45]} 18. h5 {[%emt 0:04:52]} Ba6 {[%emt 0:01:48]} 19. Na4 {[%emt 0:01:21]} Bxd3 {[%emt 0:08:21]} 20. cxd3 {[%emt 0:01:35]} c5 {[%emt 0:00:38]} 21. Rc1 {[%emt 0:01:14]} Qa7 {[%emt 0:00:44]} 22. Rc2 {[%emt 0:01:56]} Bf8 {[%emt 0:01:56]} 23. Rfc1 {[%emt 0:02:37]} Qa6 {[%emt 0:03:05]} 24. Qh3 {[%emt 0:01:42]} Rac8 {[%emt 0:02:48]} 25. Be1 {[%emt 0:02:20]} Rc6 {[%emt 0:05:36]} 26. Bf2 {[%emt 0:07:05]} Rec8 {[%emt 0:00:56]} 27. Nc3 {[%emt 0:01:39]} Qb7 {[%emt 0:04:15]} 28. Nd1 {[%emt 0:02:55]} Qa6 {[%emt 0:02:58]} 29. Nc3 {[%emt 0:02:47]} Qb7 {[%emt 0:00:04]} 30. Nd1 {[%emt 0:01:55]} Qa6 {[%emt 0:00:02]} 31. Nc3 {[%emt 0:02:26]} Qb7 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.3"]
[White "Chyzy, Jakub"]
[Black "Cernousek, Lukas"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2291"]
[BlackElo "2447"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,120,8,-10,-5,8,17,17,23,-4,-12,-17,5,0,0,-5,0,-37,72,51,63,68,81,64,92,50,61,83,62,0,15,23,19,-18,12,38,37,-2,46,-8,0,-33,-9,-12,0,0,0,0,0,0,0,-41,-41,-70,-74,-66,-77,-105,-99,-92,-93,-93,-89,-94,-102,-169,-156,-162,-155,-274,-252,-267,-262,-262,-262,-260,-233,-416,-395,-389,-283,-451,-450,-422,-430,-525,-437,-556,-544,-546,-509,-540,-549,-610,-602,-579,-512,-548,-460,-520,-531,-466,-354,-718,-699,-29970,-29970,-29974,-29973,-29982,-29983,-29982,-29983]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. a3 Nd7 6. Be2 Ne7 {B12: Caro-Kann: Advance Variation} 7. O-O h6 (7... Bg6 8. c3 c5 9. Re1 Rc8 10. Bd3 Bxd3 11. Qxd3 Nf5 12. Nbd2 Be7 13. g4 Nh4 14. Nxh4 Bxh4 {0-1 (25) Short,N (2698)-Laznicka,V (2703) Porto Carras 2011}) 8. Nbd2 g5 {The position is equal.} 9. Ne1 c5 $146 ({Predecessor:} 9... Bg7 10. Nd3 Qb6 11. Nb3 Qc7 12. f4 b6 13. fxg5 hxg5 14. Bxg5 {0-1 (32) Sorensen,J (2422)-Rasmussen,A (2486) Denmark 2014}) 10. c3 Qc7 11. b4 c4 12. a4 O-O-O 13. Nc2 Bg7 (13... f6 $15 {keeps the upper hand.}) 14. b5 $16 Nxe5 15. dxe5 Bxe5 {[%mdl 64] Double Attack} 16. Nd4 Bxh2+ 17. Kh1 Bd6 18. a5 Qd7 19. Nxf5 Nxf5 20. b6 a6 $1 21. Qa4 (21. Nf3 {seems wilder.} Qe7 22. Nd4 Nxd4 23. Qxd4 h5 24. Kg1) 21... Qxa4 (21... Qe7 {with more complications.} 22. Bg4 Ng7 23. Ba3 h5 24. Bd1 g4) 22. Rxa4 Be5 23. Bb2 Nd6 24. Raa1 (24. Bh5 $14) 24... h5 25. Rae1 Bg7 {[%mdl 1024] Black has compensation.} 26. Bd1 g4 27. Nb1 Rh6 28. Bc1 Rg6 29. Bc2 f5 $1 30. Bf4 Kd7 31. Re3 Bh6 32. Bxh6 Rxh6 33. Rfe1 {[#]} Rc8 $1 34. Nd2 Rc5 35. Ra1 Ke7 36. Kh2 Rb5 37. Re2 (37. Ra2 $17 {keeps fighting.}) 37... Rb2 $19 38. Bd1 Nb5 39. Nb1 {[#]} (39. Rc1 $17 {might work better.}) 39... Rxb1 $1 {[%mdl 576] Remove Defender, Decoy} 40. Rxb1 {Hoping for Rc1.} Nxc3 {[%mdl 64] Double Attack} 41. Rc1 Nxe2 42. Bxe2 {[%mdl 4096] Endgame KRB-KR} Kd6 43. Kg3 $2 (43. Bxc4 dxc4 44. Rxc4) 43... h4+ 44. Kh2 h3 45. f3 (45. Bxc4 $142 dxc4 46. Rxc4) 45... hxg2+ 46. Kxg2 gxf3+ 47. Bxf3 Kc5 48. Rd1 Kb4 49. Ra1 Rh8 50. Kg3 c3 51. Rc1 Rc8 52. Kf4 Kxa5 53. Ke5 Rc6 54. Kd4 c2 55. Be2 Kb4 56. Bxa6 $2 (56. Bd3) 56... Kb3 {aiming for ...Kb2.} 57. Bd3 {and the idea Ke3 leaves White hopeful.} Kb2 {Black mates.} 58. Rxc2+ Rxc2 59. Bxc2 Kxc2 60. Ke5 {[#]} f4 $1 {Accuracy: White = 39%, Black = 73%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.4"]
[White "Vignesh B"]
[Black "Budnikov, Oleg"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "1912"]
[BlackElo "2432"]
[Annotator "ChessBase"]
[PlyCount "81"]
[EventDate "2020.01.10"]
[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 0:10:18]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:11]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:05]} 4. Nxd4 {[%emt 0:00:00]} Qb6 {[%emt 0:01:40]} 5. Nb3 {[%emt 0:00:43]} Nf6 {[%emt 0:00:15]} 6. Nc3 {[%emt 0:00:09]} e6 {[%emt 0:00:07]} 7. Be3 {[%emt 0:00:10]} Qc7 {[%emt 0:00:08]} 8. a3 {[%emt 0:02:19]} a6 {[%emt 0:00:11]} 9. f4 {[%emt 0:01:24]} d6 {[%emt 0:00:08]} 10. a4 {[%emt 0:00:26]} b6 {[%emt 0:00:48]} 11. Be2 {[%emt 0:00:12]} Be7 {[%emt 0:00:07]} 12. O-O {[%emt 0:00:28]} O-O {[%emt 0:00:04]} 13. Bf3 {[%emt 0:03:06]} Rb8 {[%emt 0:00:13]} 14. Qe1 {[%emt 0:07:33]} Na5 {[%emt 0:01:45]} 15. Nd2 {[%emt 0:18:56]} b5 {[%emt 0:14:38]} 16. axb5 {[%emt 0:02:11]} axb5 {[%emt 0:00:06]} 17. Qf2 {[%emt 0:05:53]} b4 {[%emt 0:04:04]} 18. Na4 {[%emt 0:00:29]} Nd7 {[%emt 0:00:26]} 19. Rfc1 {[%emt 0:10:18]} Bf6 {[%emt 0:07:20]} 20. c3 {[%emt 0:02:07]} bxc3 {[%emt 0:00:26]} 21. Nxc3 {[%emt 0:00:33]} Qd8 {[%emt 0:02:28]} 22. Rab1 {[%emt 0:04:26]} Rb4 {[%emt 0:06:12]} 23. b3 {[%emt 0:00:48]} Bxc3 {[%emt 0:02:01]} 24. Rxc3 {[%emt 0:00:03]} Bb7 {[%emt 0:00:32]} 25. Nc4 {[%emt 0:03:28]} Nxc4 {[%emt 0:00:15]} 26. Rxc4 {[%emt 0:00:02]} Rxc4 {[%emt 0:00:31]} 27. bxc4 {[%emt 0:00:02]} Qa8 {[%emt 0:00:47]} 28. Rd1 {[%emt 0:12:53]} Nf6 {[%emt 0:03:31]} 29. e5 {[%emt 0:01:30]} dxe5 {[%emt 0:00:10]} 30. fxe5 {[%emt 0:00:41]} Ne4 {[%emt 0:00:30]} 31. Qc2 {[%emt 0:02:35]} Rc8 {[%emt 0:00:40]} 32. Rd4 {[%emt 0:04:21]} Nc5 {[%emt 0:05:36]} 33. Bxb7 {[%emt 0:01:07]} Qxb7 {[%emt 0:00:11]} 34. h3 {[%emt 0:01:11]} Qc7 {[%emt 0:00:31]} 35. Qd1 {[%emt 0:03:08]} Nb7 {[%emt 0:01:46]} 36. Qh5 {[%emt 0:00:27]} Qa5 {[%emt 0:08:25]} 37. Rd7 {[%emt 0:00:21]} Rf8 {[%emt 0:00:37]} 38. Kh2 {[%emt 0:02:25]} Nd8 {[%emt 0:01:28]} 39. Ra7 {[%emt 0:09:05]} Qb4 {[%emt 0:01:44]} 40. Qg4 {[%emt 0:01:18]} Qb8 {[%emt 0:00:41]} 41. Ra5 {[%emt 0:32:50]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.5"]
[White "Pushkov, Nikolai"]
[Black "Lalic, Bogdan"]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "2239"]
[BlackElo "2402"]
[Annotator "ChessBase"]
[PlyCount "24"]
[EventDate "2020.01.10"]
[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. Nf3 {[%emt 0:00:00]} b6 {[%emt 0:00:00]} 4. g3 {[%emt 0:00:00]} Ba6 {[%emt 0:00:00]} 5. Qa4 {[%emt 0:00:03]} Bb7 {[%emt 0:00:06]} 6. Bg2 {[%emt 0:00:06]} c5 {[%emt 0:00:08]} 7. dxc5 {[%emt 0:00:06]} bxc5 {[%emt 0:00:09]} 8. Nc3 {[%emt 0:00:10]} Be7 {[%emt 0:00:11]} 9. O-O {[%emt 0:00:07]} O-O {[%emt 0:00:10]} 10. Rd1 {[%emt 0:00:06]} Qb6 {[%emt 0:00:13]} 11. Qb5 {[%emt 0:00:24]} Qc7 {[%emt 0:00:26]} 12. Bf4 {[%emt 0:00:14]} d6 {[%emt 0:00:08]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.6"]
[White "Sharma Isha"]
[Black "Kozak, Antoni"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2169"]
[BlackElo "2380"]
[Annotator "ChessBase"]
[PlyCount "179"]
[EventDate "2020.01.10"]
[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]} e6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:08]} d5 {[%emt 0:00:00]} 4. exd5 {[%emt 0:00:05]} exd5 {[%emt 0:00:02]} 5. d4 {[%emt 0:00:24]} Nf6 {[%emt 0:00:05]} 6. Bg2 {[%emt 0:00:21]} cxd4 {[%emt 0:00:10]} 7. O-O {[%emt 0:01:00]} Be7 {[%emt 0:00:03]} 8. Nxd4 {[%emt 0:00:31]} O-O {[%emt 0:00:17]} 9. c3 {[%emt 0:03:53]} Nc6 {[%emt 0:00:36]} 10. Bf4 {[%emt 0:02:44]} Bg4 {[%emt 0:01:48]} 11. Qd3 {[%emt 0:00:27]} Qd7 {[%emt 0:00:27]} 12. Re1 {[%emt 0:02:56]} Bc5 {[%emt 0:10:08]} 13. Nb3 {[%emt 0:00:43]} Bb6 {[%emt 0:00:43]} 14. Na3 {[%emt 0:02:49]} Rfe8 {[%emt 0:22:13]} 15. Nb5 {[%emt 0:12:54]} Ne4 {[%emt 0:02:30]} 16. N5d4 {[%emt 0:00:49]} Bh5 {[%emt 0:02:27]} 17. Qb5 {[%emt 0:09:19]} Bg6 {[%emt 0:09:39]} 18. a4 {[%emt 0:00:47]} Nb8 {[%emt 0:11:28]} 19. Bf1 {[%emt 0:29:31]} Qxb5 {[%emt 0:04:03]} 20. Bxb5 {[%emt 0:00:30]} Rc8 {[%emt 0:00:05]} 21. a5 {[%emt 0:02:02]} Bd8 {[%emt 0:00:50]} 22. f3 {[%emt 0:01:11]} Nf6 {[%emt 0:00:10]} 23. g4 {[%emt 0:00:09]} h6 {[%emt 0:00:20]} 24. h4 {[%emt 0:00:07]} a6 {[%emt 0:00:37]} 25. Bf1 {[%emt 0:01:15]} Nc6 {[%emt 0:05:13]} 26. Bh3 {[%emt 0:03:15]} Bc7 {[%emt 0:00:20]} 27. g5 {[%emt 0:06:25]} Bxf4 {[%emt 0:00:20]} 28. Bxc8 {[%emt 0:00:06]} Rxc8 {[%emt 0:00:04]} 29. gxf6 {[%emt 0:00:05]} Bg3 {[%emt 0:00:49]} 30. Re2 {[%emt 0:09:26]} Bxh4 {[%emt 0:00:46]} 31. fxg7 {[%emt 0:00:19]} Bf6 {[%emt 0:00:06]} 32. Nxc6 {[%emt 0:00:19]} bxc6 {[%emt 0:00:29]} 33. Rd1 {[%emt 0:03:14]} Rb8 {[%emt 0:03:03]} 34. Nc5 {[%emt 0:00:06]} Rb5 {[%emt 0:00:04]} 35. Nxa6 {[%emt 0:00:11]} Rxa5 {[%emt 0:00:04]} 36. Nb4 {[%emt 0:00:04]} Rc5 {[%emt 0:01:20]} 37. Re8+ {[%emt 0:00:34]} Kxg7 {[%emt 0:00:08]} 38. Rc8 {[%emt 0:00:07]} Rb5 {[%emt 0:00:11]} 39. Rxc6 {[%emt 0:00:23]} d4 {[%emt 0:00:03]} 40. Kg2 {[%emt 0:01:54]} dxc3 {[%emt 0:00:29]} 41. bxc3 {[%emt 0:30:30]} Bxc3 42. Rxc3 {[%emt 0:00:10]} Rxb4 {[%emt 0:30:09]} 43. Kg3 {[%emt 0:00:16]} Rb5 {[%emt 0:00:16]} 44. Rd4 {[%emt 0:00:31]} Rg5+ {[%emt 0:00:07]} 45. Kf2 {[%emt 0:00:04]} Ra5 {[%emt 0:00:06]} 46. f4 {[%emt 0:00:30]} Rb5 {[%emt 0:00:21]} 47. Kg3 {[%emt 0:00:12]} Ra5 {[%emt 0:00:06]} 48. Rdc4 {[%emt 0:00:45]} Bf5 {[%emt 0:00:12]} 49. Kh4 {[%emt 0:00:19]} Ra1 {[%emt 0:01:16]} 50. Kg3 {[%emt 0:01:26]} Ra5 {[%emt 0:00:16]} 51. Rc5 {[%emt 0:00:10]} Rxc5 {[%emt 0:00:04]} 52. Rxc5 {[%emt 0:00:02]} Kg6 {[%emt 0:00:06]} 53. Rc6+ {[%emt 0:00:35]} f6 {[%emt 0:00:07]} 54. Rc7 {[%emt 0:00:23]} Be4 {[%emt 0:00:13]} 55. Kg4 {[%emt 0:00:18]} Bf5+ {[%emt 0:00:04]} 56. Kh4 {[%emt 0:00:04]} Be4 {[%emt 0:00:55]} 57. Rc5 {[%emt 0:00:14]} Bf5 {[%emt 0:00:05]} 58. Ra5 {[%emt 0:00:11]} Bd3 {[%emt 0:00:15]} 59. Kg4 {[%emt 0:00:12]} Be2+ {[%emt 0:00:03]} 60. Kg3 {[%emt 0:00:03]} Bd3 {[%emt 0:00:04]} 61. Kf3 {[%emt 0:00:15]} Bf5 {[%emt 0:00:24]} 62. Ra1 {[%emt 0:00:37]} Bc2 {[%emt 0:00:27]} 63. Rg1+ {[%emt 0:00:10]} Kf5 {[%emt 0:00:23]} 64. Ke3 {[%emt 0:00:04]} h5 {[%emt 0:01:03]} 65. Rc1 {[%emt 0:01:20]} Bb3 {[%emt 0:01:15]} 66. Rc3 {[%emt 0:00:29]} Bd1 {[%emt 0:00:10]} 67. Rc5+ {[%emt 0:00:28]} Kg4 {[%emt 0:01:14]} 68. Rc1 {[%emt 0:00:06]} Ba4 {[%emt 0:01:15]} 69. Ke4 {[%emt 0:01:32]} Bd7 {[%emt 0:04:02]} 70. Rg1+ {[%emt 0:02:34]} Kh3 {[%emt 0:00:06]} 71. f5 {[%emt 0:01:27]} h4 {[%emt 0:07:39]} 72. Kf4 {[%emt 0:03:03]} Kh2 {[%emt 0:00:17]} 73. Rd1 {[%emt 0:01:11]} Bc8 {[%emt 0:00:42]} 74. Rd2+ {[%emt 0:00:36]} Kg1 {[%emt 0:00:19]} 75. Rd1+ {[%emt 0:00:00]} Kg2 {[%emt 0:00:00]} 76. Rd2+ {[%emt 0:00:00]} Kg1 {[%emt 0:00:00]} 77. Rd8 {[%emt 0:00:00]} Bxf5 {[%emt 0:00:00]} 78. Kxf5 {[%emt 0:00:00]} h3 {[%emt 0:00:00]} 79. Kg4 {[%emt 0:00:00]} h2 {[%emt 0:00:00]} 80. Rd1+ {[%emt 0:00:00]} Kg2 {[%emt 0:00:00]} 81. Rd2+ {[%emt 0:00:00]} Kg1 {[%emt 0:00:00]} 82. Kg3 {[%emt 0:00:00]} h1=N+ {[%emt 0:00:00]} 83. Kf3 {[%emt 0:00:00]} f5 {[%emt 0:00:00]} 84. Rd1+ {[%emt 0:00:00]} Kh2 {[%emt 0:00:00]} 85. Rd8 {[%emt 0:00:00]} f4 {[%emt 0:00:00]} 86. Rd2+ {[%emt 0:00:07]} Kg1 {[%emt 0:00:00]} 87. Kxf4 {[%emt 0:00:07]} Nf2 {[%emt 0:00:00]} 88. Kf3 {[%emt 0:00:04]} Nh3 {[%emt 0:00:00]} 89. Kg3 {[%emt 0:00:04]} Ng5 {[%emt 0:00:00]} 90. Rd1# {[%emt 0:00:05]} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.7"]
[White "Hrbek, Stepan"]
[Black "Peng, Hongchi"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "2126"]
[BlackElo "2362"]
[Annotator "ChessBase"]
[PlyCount "88"]
[EventDate "2020.01.10"]
[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]} e6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:03]} Nc6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:08]} Qc7 {[%emt 0:00:02]} 6. Be2 {[%emt 0:00:31]} a6 {[%emt 0:00:06]} 7. O-O {[%emt 0:00:07]} Nf6 {[%emt 0:00:09]} 8. Be3 {[%emt 0:00:09]} b5 {[%emt 0:00:58]} 9. Nxc6 {[%emt 0:00:26]} dxc6 {[%emt 0:00:15]} 10. f4 {[%emt 0:00:49]} b4 {[%emt 0:09:06]} 11. Na4 {[%emt 0:05:17]} Rb8 {[%emt 0:00:11]} 12. Bf3 {[%emt 0:02:36]} Be7 {[%emt 0:00:19]} 13. b3 {[%emt 0:01:06]} O-O {[%emt 0:00:30]} 14. Nb2 {[%emt 0:00:42]} a5 {[%emt 0:07:50]} 15. Nc4 {[%emt 0:02:42]} Ba6 {[%emt 0:00:21]} 16. Qe1 {[%emt 0:01:11]} Bxc4 {[%emt 0:06:05]} 17. bxc4 {[%emt 0:00:12]} Nd7 {[%emt 0:00:44]} 18. Qe2 {[%emt 0:13:25]} Bc5 {[%emt 0:00:28]} 19. Bxc5 {[%emt 0:08:13]} Nxc5 {[%emt 0:00:05]} 20. e5 {[%emt 0:00:04]} Rfd8 {[%emt 0:06:09]} 21. Qe3 {[%emt 0:09:27]} Nd7 {[%emt 0:09:25]} 22. Rfd1 {[%emt 0:12:07]} Qb6 {[%emt 0:12:27]} 23. Qxb6 {[%emt 0:01:31]} Nxb6 {[%emt 0:00:08]} 24. Bxc6 {[%emt 0:00:09]} Nxc4 {[%emt 0:00:24]} 25. Kf2 {[%emt 0:12:25]} Rdc8 {[%emt 0:02:48]} 26. Be4 {[%emt 0:01:29]} Rc7 {[%emt 0:00:48]} 27. Rd4 {[%emt 0:07:36]} Kf8 {[%emt 0:01:53]} 28. Rad1 {[%emt 0:00:19]} Ke7 {[%emt 0:00:38]} 29. Ke2 {[%emt 0:02:31]} Na3 {[%emt 0:00:48]} 30. Kd2 {[%emt 0:05:57]} Nb5 {[%emt 0:03:52]} 31. Rd3 {[%emt 0:00:07]} Nc3 {[%emt 0:02:34]} 32. Re1 {[%emt 0:00:04]} Rbc8 {[%emt 0:03:01]} 33. Bf3 {[%emt 0:02:51]} Nxa2 {[%emt 0:00:50]} 34. Bd1 {[%emt 0:00:09]} Nc3 {[%emt 0:01:37]} 35. Bf3 {[%emt 0:00:06]} Na4 {[%emt 0:09:48]} 36. Rc1 {[%emt 0:01:59]} Nb2 {[%emt 0:00:38]} 37. Rb3 {[%emt 0:00:51]} Nc4+ {[%emt 0:00:17]} 38. Kd1 {[%emt 0:00:14]} Rd8+ {[%emt 0:07:33]} 39. Ke2 {[%emt 0:01:57]} Na3 {[%emt 0:00:24]} 40. Be4 {[%emt 0:00:06]} Nb5 {[%emt 0:00:15]} 41. Rd3 {[%emt 0:31:38]} b3 {[%emt 0:33:10]} 42. Rxd8 Kxd8 {[%emt 0:00:02]} 43. Kd3 {[%emt 0:02:24]} b2 {[%emt 0:00:23]} 44. Rb1 {[%emt 0:00:09]} Rd7+ {[%emt 0:00:09] Kd4} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.8"]
[White "Smolik, Jachym"]
[Black "Domogaev, Sergey"]
[Result "0-1"]
[ECO "B24"]
[WhiteElo "2025"]
[BlackElo "2334"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,190,0,25,23,22,14,26,4,15,13,26,12,3,-11,29,0,0,0,0,-10,29,-19,-28,-45,-20,-10,-12,-45,-18,-18,-16,-19,-14,-38,-30,-22,-29,-47,-45,-126,-96,-111,-112,-114,-52,-52,-29,-27,-20,-35,-29,-33,-16,-25,-25,-27,-25,-33,-13,-14,-14,-12,0,0,0,0,0,0,0,0,0,0,21,0,0,-27,-27,-27,-28,-55,-13,-80,-80,-80,-80,-80,-80,-80,-65,-68,-65,-81,-79,-79,-89,-204,-189,-201,-208,-146,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-33,-39,-293,-296,-547,-349,-316,-577,-580,-560,-535,-547,-533,-502,-480,-472,-425,-357,-396,-357,-335,-350,-329,-318,-835,-796,-720,-660,-902,-881,-891,-634,-981,-119,-203,0,-833,-109,-116,-110,-112,0,-117,-108,-107,-108,-225,-218,-204,-204,-189,-189,-182,0,0,0,-342,-342,-342,-335,-335,-327,-327,-320,-29983,-29984]} 1. e4 c5 2. Nc3 Nc6 3. Bb5 g6 4. Nge2 Bg7 5. Bxc6 dxc6 6. d3 {B23: Closed Sicilian: Lines without g3} Nf6 7. O-O O-O 8. Be3 {White has an edge.} b6 9. h3 e5 10. f4 $146 ({Predecessor:} 10. Qd2 Ne8 11. Bh6 f6 12. Bxg7 Nxg7 13. f4 Bd7 {1-0 (28) Bojkovic,N (2384)-Doluhanova,E (2321) Valjevo 2018}) 10... exf4 11. Bxf4 Re8 12. Ng3 Nd7 13. Qf3 Qe7 14. Nge2 Nf8 15. Kh1 Ne6 16. Bh2 Nd4 (16... f6 {with more complications.} 17. a4 Ng5 18. Qg3 c4 19. a5 Ba6) 17. Nxd4 cxd4 18. Ne2 Rf8 19. Rae1 Bb7 20. Qg3 Rad8 21. Nf4 Qd7 22. h4 Bc8 23. Rf3 Rde8 24. Qf2 ({White should try} 24. Nh3 $15) 24... Qd8 {Played: Qd7-e7} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.9"]
[White "Vokac, Marek"]
[Black "Riha, Vojtech"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2334"]
[BlackElo "2247"]
[Annotator "ChessBase"]
[PlyCount "54"]
[EventDate "2020.01.10"]
[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 0:00:00]} g6 {[%emt 0:00:04]} 3. Nc3 {[%emt 0:00:30]} Bg7 {[%emt 0:00:26]} 4. e4 {[%emt 0:02:09]} d6 {[%emt 0:00:16]} 5. d4 O-O {[%emt 0:00:41]} 6. Be2 {[%emt 0:00:09]} e5 {[%emt 0:01:15]} 7. d5 {[%emt 0:00:15]} a5 {[%emt 0:01:58]} 8. Bg5 {[%emt 0:00:17]} h6 {[%emt 0:01:19]} 9. Be3 {[%emt 0:04:00]} Na6 {[%emt 0:00:32]} 10. Nd2 {[%emt 0:00:53]} Nd7 {[%emt 0:06:48]} 11. g4 {[%emt 0:05:34]} f5 {[%emt 0:08:57]} 12. gxf5 {[%emt 0:00:21]} gxf5 {[%emt 0:02:27]} 13. exf5 {[%emt 0:00:03]} Ndc5 {[%emt 0:00:58]} 14. Rg1 {[%emt 0:04:00]} Kh8 {[%emt 0:02:24]} 15. Nde4 {[%emt 0:07:29]} Bxf5 {[%emt 0:04:25]} 16. Ng3 {[%emt 0:03:09]} Bg6 {[%emt 0:05:15]} 17. Nh5 {[%emt 0:00:37]} Bxh5 {[%emt 0:00:51]} 18. Bxh5 {[%emt 0:00:03]} Qh4 {[%emt 0:04:40]} 19. Bg6 {[%emt 0:15:22]} e4 {[%emt 0:05:21]} 20. Nxe4 {[%emt 0:10:38]} Nxe4 {[%emt 0:03:27]} 21. Rg4 {[%emt 0:00:04]} Qf6 {[%emt 0:05:27]} 22. Bxe4 {[%emt 0:00:06]} Rae8 {[%emt 0:01:17]} 23. Qd2 {[%emt 0:12:05]} Rxe4 {[%emt 0:26:13]} 24. Rxe4 {[%emt 0:01:02]} Qf3 {[%emt 0:00:07]} 25. Re7 {[%emt 0:05:33]} Qh1+ {[%emt 0:01:11]} 26. Ke2 {[%emt 0:00:04]} Qf3+ {[%emt 0:00:07]} 27. Ke1 {[%emt 0:00:44]} Qh1+ {[%emt 0:00:17]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.10"]
[White "Jordanov Mihail"]
[Black "Liu, Zhaoqi"]
[Result "1/2-1/2"]
[ECO "C03"]
[WhiteElo "2012"]
[BlackElo "2328"]
[Annotator "ChessBase"]
[PlyCount "94"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 3. Nd2 {[%emt 0:00:00]} Be7 {[%emt 0:00:03]} 4. Bd3 {[%emt 0:00:10]} c5 {[%emt 0:00:06]} 5. dxc5 {[%emt 0:00:08]} Nf6 {[%emt 0:00:06]} 6. Qe2 {[%emt 0:00:23]} O-O {[%emt 0:00:19]} 7. Ngf3 {[%emt 0:00:35]} a5 {[%emt 0:00:07]} 8. O-O {[%emt 0:01:27]} Na6 {[%emt 0:00:07]} 9. e5 {[%emt 0:01:36]} Nd7 {[%emt 0:00:07]} 10. c3 {[%emt 0:00:52]} Naxc5 {[%emt 0:00:07]} 11. Bc2 {[%emt 0:00:12]} b5 {[%emt 0:00:04]} 12. Nb3 {[%emt 0:01:04]} b4 {[%emt 0:01:03]} 13. cxb4 {[%emt 0:08:22]} axb4 {[%emt 0:00:32]} 14. Re1 {[%emt 0:00:18]} Nxb3 {[%emt 0:04:38]} 15. Qd3 {[%emt 0:02:19]} g6 {[%emt 0:00:39]} 16. Qxb3 {[%emt 0:00:09]} Nc5 {[%emt 0:04:51]} 17. Qe3 {[%emt 0:00:22]} d4 {[%emt 0:16:27]} 18. Nxd4 {[%emt 0:25:45]} Bb7 {[%emt 0:00:36]} 19. Nb3 {[%emt 0:03:33]} Qd5 {[%emt 0:05:59]} 20. Qg3 {[%emt 0:05:22]} Rfd8 {[%emt 0:15:48]} 21. Be3 {[%emt 0:07:54]} Nxb3 {[%emt 0:09:14]} 22. Bxb3 {[%emt 0:00:21]} Qb5 {[%emt 0:00:05]} 23. Bg5 {[%emt 0:13:12]} Bxg5 {[%emt 0:03:02]} 24. Qxg5 {[%emt 0:00:07]} Rd4 {[%emt 0:02:47]} 25. Rad1 {[%emt 0:06:18]} Rad8 {[%emt 0:00:14]} 26. h3 {[%emt 0:04:21]} Qc6 {[%emt 0:03:16]} 27. Rxd4 {[%emt 0:01:29]} Rxd4 {[%emt 0:00:05]} 28. Rd1 {[%emt 0:00:51]} h6 {[%emt 0:04:32]} 29. Qg3 {[%emt 0:00:45]} Rxd1+ {[%emt 0:01:02]} 30. Bxd1 {[%emt 0:00:04]} Qc1 {[%emt 0:00:03]} 31. Qd3 {[%emt 0:07:01]} Bd5 {[%emt 0:00:09]} 32. b3 {[%emt 0:04:00]} Qg5 {[%emt 0:01:10]} 33. Bf3 {[%emt 0:01:29]} Qxe5 {[%emt 0:03:21]} 34. Bxd5 exd5 {[%emt 0:00:17]} 35. Qd2 {[%emt 0:00:56]} d4 {[%emt 0:06:14]} 36. Kf1 {[%emt 0:01:21]} Qb5+ {[%emt 0:01:32]} 37. Ke1 {[%emt 0:00:17]} d3 {[%emt 0:01:08]} 38. Qe3 {[%emt 0:01:10]} Qa6 {[%emt 0:07:09]} 39. Qe8+ {[%emt 0:01:33]} Kg7 {[%emt 0:00:07]} 40. Qe5+ {[%emt 0:00:37]} Kh7 {[%emt 0:01:28]} 41. Qd5 {[%emt 0:04:24]} Kg7 {[%emt 0:03:09]} 42. Qd4+ {[%emt 0:00:26]} Kg8 {[%emt 0:00:17]} 43. Qd8+ {[%emt 0:00:06]} Kh7 {[%emt 0:00:38]} 44. Qd7 {[%emt 0:01:01]} Kg7 {[%emt 0:01:27]} 45. Qd4+ {[%emt 0:00:06]} Kg8 {[%emt 0:02:50]} 46. Qd8+ {[%emt 0:00:06]} Kh7 {[%emt 0:00:24]} 47. Qd7 {[%emt 0:00:06]} Kg7 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.11"]
[White "Low, Zhen Yu Cyrus"]
[Black "Shehzad, Shazil"]
[Result "1-0"]
[ECO "B91"]
[WhiteElo "2415"]
[BlackElo "2162"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,77,16,16,16,16,7,12,12,22,9,44,31,50,35,58,46,166,166,174,166,170,165,176,166,209,114,136,148,138,135,234,124,149,182,250,233,250,208,212,202,205,192,206,194,249,181,286,220,334,192,339,318,387,215,352,351,570,567,668,707,607,595]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 {B91: Sicilian Najdorf: 6 g3} Nxd5 11. Qxd5 Ra7 12. Be3 {The position is equal.} Be6 13. Qd3 {[#]} Rd7 $146 ({Predecessor:} 13... Rb7 14. b3 Nd7 15. Nc3 Nf6 16. a4 Qd7 17. axb5 axb5 {0-1 (49) Adams,M (2747)-Nepomniachtchi,I (2751) Moscow 2017}) 14. Rfd1 Nc6 15. Nc3 $36 {[%mdl 2048] White is more active.} Qc8 16. Nd5 {Black must now prevent Nb6.} Bxd5 (16... Bd8 $14) 17. exd5 $18 Nb4 {[#]} 18. Qd2 $1 {[%cal Rd2b4]} a5 19. a3 Na6 20. Qxa5 Qb7 21. Qb6 ({White should try} 21. a4 $18) 21... f5 22. Qxb7 Rxb7 23. Bf1 Rc8 (23... Bf6 $16 24. a4 Nb4) 24. Rac1 (24. a4 $18) 24... Nc5 25. b4 Na4 (25... Ne4 $142) 26. c4 bxc4 27. Bxc4 Ra8 {intending ...Nb2.} 28. Bf1 g5 29. Rc6 f4 30. Bc1 h5 (30... Nb6 $142 31. Bh3 Kg7) 31. Rd2 Raa7 (31... Nb6 $142 32. Be2 h4) 32. Rdc2 Kf7 {[#]} (32... h4 $142 33. Bh3 Kg7) 33. Be2 (33. h4 $142 $1 {[%mdl 512]}) 33... Kg6 (33... h4 {was necessary.} 34. Bg4 Kf6) 34. Bd3+ Kf6 35. Be4 (35. h4 $142) 35... Kf7 {[#]} (35... h4 {might work better.} 36. gxh4 gxh4) 36. h4 $1 {[%mdl 512]} fxg3 $2 (36... Rd7 {was called for.} 37. Kg2 Rd8 38. hxg5 Bxg5 39. gxf4 Bxf4 40. Bxf4 exf4) (36... gxh4 37. gxf4) 37. hxg5 {White is clearly winning.} gxf2+ 38. Rxf2+ Kg7 39. Rh2 {Accuracy: White = 58%, Black = 36%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.12"]
[White "Laxman, R.R."]
[Black "Pniaczek, Marek"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2441"]
[BlackElo "2145"]
[Annotator "ChessBase"]
[PlyCount "99"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:01:33]} d5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:09]} Nf6 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:06]} e6 {[%emt 0:00:00]} 4. g3 {[%emt 0:00:03]} Be7 {[%emt 0:00:04]} 5. Bg2 {[%emt 0:00:05]} O-O {[%emt 0:00:09]} 6. O-O {[%emt 0:00:05]} dxc4 {[%emt 0:00:06]} 7. Qc2 {[%emt 0:00:05]} a6 {[%emt 0:00:05]} 8. a4 {[%emt 0:00:03]} Bd7 {[%emt 0:00:20]} 9. Qxc4 {[%emt 0:00:18]} Bc6 {[%emt 0:00:23]} 10. Bf4 {[%emt 0:00:32]} Nbd7 {[%emt 0:00:45]} 11. Nc3 {[%emt 0:00:57]} Bd6 {[%emt 0:00:25]} 12. a5 {[%emt 0:05:01]} Bxf4 {[%emt 0:05:07]} 13. gxf4 {[%emt 0:00:03]} Nd5 {[%emt 0:07:28]} 14. e3 {[%emt 0:06:33]} Nxc3 {[%emt 0:00:42]} 15. Qxc3 {[%emt 0:00:02]} Nf6 {[%emt 0:00:37]} 16. Ne5 {[%emt 0:02:09]} Bxg2 {[%emt 0:01:54]} 17. Kxg2 {[%emt 0:00:03]} Rc8 {[%emt 0:03:15]} 18. Qb3 {[%emt 0:03:07]} Qd5+ {[%emt 0:03:47]} 19. Qxd5 {[%emt 0:00:02]} exd5 {[%emt 0:01:01]} 20. Rfc1 {[%emt 0:01:20]} Ne4 {[%emt 0:01:59]} 21. b4 {[%emt 0:00:58]} f6 {[%emt 0:03:55]} 22. Nd7 {[%emt 0:02:02]} Rf7 {[%emt 0:03:19]} 23. Nc5 {[%emt 0:00:04]} Nd6 {[%emt 0:01:32]} 24. Kf3 {[%emt 0:00:08]} c6 {[%emt 0:02:45]} 25. Kg4 {[%emt 0:02:05]} g6 {[%emt 0:05:26]} 26. Kf3 {[%emt 0:00:05]} Nf5 {[%emt 0:04:25]} 27. Ke2 {[%emt 0:00:34]} Re7 {[%emt 0:01:44]} 28. Kd3 {[%emt 0:02:30]} Nd6 {[%emt 0:05:26]} 29. Rg1 {[%emt 0:02:30]} Kf7 {[%emt 0:02:27]} 30. Rae1 {[%emt 0:00:05]} Ne4 {[%emt 0:26:19]} 31. f3 {[%emt 0:03:19]} Nxc5+ {[%emt 0:00:43]} 32. bxc5 {[%emt 0:00:03]} f5 {[%emt 0:00:50]} 33. e4 {[%emt 0:01:28]} fxe4+ {[%emt 0:09:21]} 34. fxe4 {[%emt 0:00:01]} Rxe4 {[%emt 0:00:10]} 35. Rxe4 {[%emt 0:00:02]} dxe4+ {[%emt 0:00:08]} 36. Kxe4 {[%emt 0:00:01]} Re8+ {[%emt 0:00:13]} 37. Kf3 {[%emt 0:00:19]} Kf6 {[%emt 0:00:47]} 38. Rb1 {[%emt 0:00:15]} Re7 {[%emt 0:00:19]} 39. d5 {[%emt 0:00:59]} cxd5 {[%emt 0:00:33]} 40. Rb6+ {[%emt 0:00:01]} Kf5 {[%emt 0:01:07]} 41. Rd6 {[%emt 0:30:01]} Re1 {[%emt 0:34:25]} 42. Rxd5+ {[%emt 0:00:12]} Ke6 {[%emt 0:01:10]} 43. Rd6+ {[%emt 0:00:05]} Kf5 {[%emt 0:00:10]} 44. Rd7 {[%emt 0:02:45]} Rb1 {[%emt 0:00:30]} 45. Rf7+ {[%emt 0:00:23]} Ke6 {[%emt 0:00:23]} 46. Rxh7 {[%emt 0:00:06]} Rb5 {[%emt 0:00:29]} 47. Rc7 {[%emt 0:01:51]} Rxa5 {[%emt 0:00:14]} 48. Kg4 {[%emt 0:00:13]} Kf6 {[%emt 0:01:23]} 49. Rxb7 {[%emt 0:01:40]} Rxc5 {[%emt 0:00:53]} 50. Rb6+ {[%emt 0:00:01] Ke5} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.13"]
[White "Quesada Vera, Liordis"]
[Black "Eriksson, Christian Altenburg"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2386"]
[BlackElo "2121"]
[Annotator "ChessBase"]
[PlyCount "57"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:15:27]} c5 {[%emt 0:00:00]} 2. c3 {[%emt 0:00:12]} d5 {[%emt 0:00:42]} 3. exd5 {[%emt 0:02:21]} Qxd5 {[%emt 0:00:11]} 4. d4 {[%emt 0:00:14]} g6 {[%emt 0:00:22]} 5. Na3 {[%emt 0:14:48]} Bg7 {[%emt 0:05:50]} 6. Nb5 {[%emt 0:07:01]} Na6 {[%emt 0:01:59]} 7. Be3 {[%emt 0:00:19]} cxd4 {[%emt 0:04:21]} 8. Qa4 {[%emt 0:04:38]} Qd7 {[%emt 0:09:27]} 9. O-O-O {[%emt 0:10:02]} Kf8 {[%emt 0:09:35]} 10. Nf3 {[%emt 0:14:37]} Nh6 {[%emt 0:07:54]} 11. Nfxd4 {[%emt 0:02:39]} Qe8 {[%emt 0:02:57]} 12. f3 {[%emt 0:04:26]} Nf5 {[%emt 0:03:34]} 13. Nxf5 {[%emt 0:00:22]} Bxf5 {[%emt 0:00:55]} 14. Qa5 {[%emt 0:02:53]} h5 {[%emt 0:06:33]} 15. h4 {[%emt 0:00:03]} Bf6 {[%emt 0:01:46]} 16. Nd4 {[%emt 0:00:21]} Bd7 {[%emt 0:01:47]} 17. Bg5 {[%emt 0:00:30]} Bxg5+ {[%emt 0:06:13]} 18. hxg5 {[%emt 0:00:40]} Kg7 {[%emt 0:01:50]} 19. Bxa6 {[%emt 0:00:29]} bxa6 {[%emt 0:01:02]} 20. Rhe1 {[%emt 0:00:11]} Bb5 {[%emt 0:03:07]} 21. Qc7 {[%emt 0:02:02]} e6 {[%emt 0:01:47]} 22. Rxe6 {[%emt 0:04:08]} Qc8 {[%emt 0:02:28]} 23. Re7 {[%emt 0:03:15]} Qxc7 {[%emt 0:01:29]} 24. Ne6+ {[%emt 0:00:07]} Kg8 {[%emt 0:02:47]} 25. Nxc7 {[%emt 0:00:03]} Rc8 {[%emt 0:00:27]} 26. Nxb5 {[%emt 0:01:45]} axb5 {[%emt 0:00:06]} 27. Rdd7 {[%emt 0:00:14]} Rh7 {[%emt 0:00:42]} 28. Rxa7 {[%emt 0:00:14]} Rc5 {[%emt 0:00:24]} 29. f4 {[%emt 0:00:14]} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.14"]
[White "Neuman, Petr"]
[Black "Balinski, Damian"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2371"]
[BlackElo "2139"]
[Annotator "ChessBase"]
[PlyCount "96"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:03:53]} d6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:05]} Nf6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:13]} g6 {[%emt 0:00:00]} 4. h3 {[%emt 0:00:12]} Bg7 {[%emt 0:00:37]} 5. g4 {[%emt 0:00:09]} h5 {[%emt 0:18:17]} 6. g5 {[%emt 0:00:24]} Nfd7 {[%emt 0:00:03]} 7. f4 {[%emt 0:01:29]} Nb6 {[%emt 0:06:38]} 8. Bg2 {[%emt 0:06:06]} c6 {[%emt 0:04:09]} 9. Nge2 {[%emt 0:16:23]} d5 {[%emt 0:11:32]} 10. f5 {[%emt 0:00:26]} gxf5 {[%emt 0:07:16]} 11. e5 {[%emt 0:00:20]} e6 {[%emt 0:06:11]} 12. Ng3 {[%emt 0:02:44]} h4 {[%emt 0:07:04]} 13. Nh5 {[%emt 0:00:18]} Kf8 {[%emt 0:00:26]} 14. Nxg7 {[%emt 0:03:17]} Kxg7 {[%emt 0:00:02]} 15. Ne2 {[%emt 0:00:07]} N8d7 {[%emt 0:08:56]} 16. Nf4 {[%emt 0:01:18]} Nf8 {[%emt 0:01:38]} 17. Nh5+ {[%emt 0:00:29]} Kg6 {[%emt 0:06:19]} 18. Bf3 {[%emt 0:02:13]} Bd7 {[%emt 0:01:50]} 19. b3 {[%emt 0:03:41]} Be8 {[%emt 0:00:58]} 20. Be3 {[%emt 0:01:11]} c5 {[%emt 0:04:03]} 21. c3 {[%emt 0:00:41]} cxd4 {[%emt 0:01:49]} 22. cxd4 {[%emt 0:00:06]} Rc8 {[%emt 0:00:50]} 23. O-O {[%emt 0:02:49]} Nbd7 {[%emt 0:02:52]} 24. Kh1 {[%emt 0:02:33]} Nb8 {[%emt 0:00:05]} 25. Rg1 {[%emt 0:03:45]} Nc6 {[%emt 0:00:26]} 26. Rc1 {[%emt 0:03:06]} Nb4 {[%emt 0:01:23]} 27. Rxc8 {[%emt 0:02:00]} Qxc8 {[%emt 0:00:01]} 28. Qd2 {[%emt 0:01:14]} Nc6 {[%emt 0:00:02]} 29. Bf2 {[%emt 0:04:01]} Qd8 {[%emt 0:00:41]} 30. Bxh4 {[%emt 0:02:56]} Qa5 {[%emt 0:00:23]} 31. Qe3 {[%emt 0:02:08]} Qxa2 {[%emt 0:01:07]} 32. Bf2 {[%emt 0:01:07]} Nb4 {[%emt 0:02:57]} 33. h4 {[%emt 0:02:04]} Bb5 {[%emt 0:03:46]} 34. Nf6 {[%emt 0:02:27]} Kg7 {[%emt 0:00:17]} 35. h5 {[%emt 0:00:05]} Ng6 {[%emt 0:00:14]} 36. Rc1 {[%emt 0:27:02]} Nd3 {[%emt 0:00:53]} 37. h6+ {[%emt 0:00:48]} Kf8 {[%emt 0:00:01]} 38. Be1 {[%emt 0:01:03]} Qa3 {[%emt 0:03:25]} 39. Rc8+ {[%emt 0:03:18]} Ke7 {[%emt 0:00:02]} 40. Rc7+ {[%emt 0:00:02]} Kd8 {[%emt 0:01:35]} 41. Rxb7 {[%emt 0:30:22]} Qa1 {[%emt 0:10:49]} 42. Rxb5 {[%emt 0:00:00]} Nxe1 {[%emt 0:02:42]} 43. Qg1 {[%emt 0:00:00]} Qc3 {[%emt 0:01:06]} 44. Bg2 {[%emt 0:00:00]} Nxg2 {[%emt 0:06:25]} 45. Qxg2 {[%emt 0:00:00]} Qe1+ {[%emt 0:00:38]} 46. Qg1 {[%emt 0:00:00]} Qh4+ {[%emt 0:00:22]} 47. Qh2 {[%emt 0:00:00]} Qe1+ {[%emt 0:00:17]} 48. Qg1 {[%emt 0:00:00]} Qh4+ {[%emt 0:00:14]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.15"]
[White "Malovanyi, Yulian"]
[Black "Saglam, Buelent"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2360"]
[BlackElo "2118"]
[Annotator "ChessBase"]
[PlyCount "75"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bd3 Bd6 6. O-O O-O 7. Bg5 Be6 8. Nbd2 Nbd7 9. c4 c6 10. c5 Bc7 11. Qc2 Qb8 12. Rfe1 h6 13. Bh4 Nh5 14. Bg3 Nf4 15. Bxf4 Bxf4 16. b4 a6 17. a4 Qd8 18. Rab1 Qf6 19. b5 axb5 20. axb5 Bxd2 21. Qxd2 Bf5 22. bxc6 bxc6 23. Rb7 Rfb8 24. Rc7 Rc8 25. Rxc8+ Rxc8 26. Qc2 Bg4 27. Ne5 Re8 28. Qa4 g5 29. Re3 Nxe5 30. dxe5 Qe6 31. h4 Bh5 32. f4 Qe7 33. Qxc6 gxf4 34. Qxh6 f5 35. Qxf4 Qxc5 36. Kh2 Bg4 37. Bxf5 Bxf5 38. Rg3+ 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.11"]
[Round "3.16"]
[White "Priehoda, Vitezslav"]
[Black "Laverton, Christian"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2341"]
[BlackElo "2109"]
[Annotator "ChessBase"]
[PlyCount "33"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. Nc3 a6 5. h3 b5 6. b3 g6 7. Bb2 Bg7 8. d4 O-O 9. Bd3 Nbd7 10. O-O bxc4 11. bxc4 Rb8 12. Rb1 Qa5 13. Qe2 dxc4 14. Bxc4 c5 15. Rfd1 Bb7 16. Ne5 e6 17. f4 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.1"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Peng, Hongchi"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "2491"]
[BlackElo "2362"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,69,33,113,0,0,0,0,-169,-7,1,37,31,47,49,41,41,45,27,41,39,29,38,39,39,41,43,18,18,41,40,45,43,302,311,312,305,287,309,302,295,308,301,300,291,295,293,281,301,279,266,390,391,473,462,469,458,598,591,789,539,1066,1066]} 1. d4 d5 2. c4 c5 3. cxd5 Qxd5 4. Nf3 cxd4 5. Nc3 Qd8 (5... Qa5 $14 6. Qxd4 Nc6) 6. Nxd4 {D06: Queen's Gambit: Symmetrical and Baltic Defences} (6. Qxd4 $16 Bd7 7. e4) (6. Qxd4 Qxd4 7. Nxd4 Nf6 8. Ndb5 Na6 9. Bf4 g6 10. g3 Bg7 11. Bg2 O-O 12. O-O Ng4 13. Rad1 Nb4 {1-0 (30) Soysal,S (2431)-Jijo,J (2053) Paracin 2019}) 6... e5 $11 7. Ndb5 a6 $1 8. Qxd8+ {The position is equal.} Kxd8 9. Na3 $1 ({Wrong is} 9. Bg5+ $2 f6 $19) 9... b5 10. Nc2 Bb7 11. f3 f5 $146 ({Predecessor:} 11... Nd7 12. e4 Rc8 13. Ne3 Bb4 {1-0 (50) Eriksson,J (2207)-Sofiev,A (2162) Helsinki 2008}) 12. g3 Nd7 13. Bh3 g6 14. e4 b4 15. Bg5+ Ke8 16. Na4 Bc6 17. b3 fxe4 18. fxe4 h6 19. Bd2 Bxe4 20. O-O {Black must now prevent Bxd7+.} Rb8 $2 {[%mdl 8192] [#]} ({Better is} 20... Bxc2 $14 21. Bxd7+ Kxd7) 21. Bxd7+ $1 $18 Kxd7 {[#]} 22. Rxf8 $1 {[%mdl 576] Remove Defender} Rxf8 23. Nc5+ {[%mdl 64] Double Attack} Kc6 24. Nxe4 a5 25. Ne3 Nf6 26. Rc1+ Kd7 27. Nc5+ Ke7 28. Nc4 Rc8 29. Nxe5 Rhg8 (29... Rhd8 $142) 30. Re1 Kd6 31. Nb7+ {White is clearly winning.} Kd5 32. Nc4 Kd4 33. Rd1 {Threatening mate with Bg5+.} Kd3 34. Be3+ Ke2 35. Rd2+ {Accuracy: White = 85%, Black = 59%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.2"]
[White "Cernousek, Lukas"]
[Black "Sharma Isha"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2447"]
[BlackElo "2169"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,88,39,16,27,20,28,27,18,24,18,24,15,30,50,48,60,50,56,-12,-15,-9,0,-33,-30,-21,-29,-73,-65,-62,-38,-47,0,0,0,-46,-43,-125,-8,-28,-15,-106,-120,-95,-73,-183,-183,-171,-66,-66,-66,-66,-66,-66,-66,-58,2,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Nc6 7. Nc3 e5 8. dxe5 Nxe5 9. Nxe5 dxe5 10. Qxd8 Rxd8 11. Bg5 Rd4 12. Nd5 Nxd5 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6} 13. cxd5 e4 14. Rfd1 Bf5 {White has an edge.} 15. Rxd4 Bxd4 16. Rc1 f6 (16... Be5 17. b3 f6 18. Bf4 Bxf4 19. gxf4 Rd8 20. e3 Rxd5 {1-0 (41) Svidler,P (2723)-Yuffa,D (2566) Moscow 2019}) 17. Bf4 Rd8 18. Rxc7 $146 ({Predecessor:} 18. h3 g5 19. Bxc7 Rxd5 20. g4 Bg6 21. b4 Bb2 22. Rc2 Ba3 {½-½ (22) Krogius,N-Roos,M Le Havre 1966}) 18... g5 19. Be3 Rxd5 20. g4 (20. Rxb7 $14 Bb6 21. Bf1 (21. Bxb6 {gets mated.} Rd1+ 22. Bf1 Bh3 23. Rb8+ Kg7 24. Rb7+ Kg6 25. Rg7+ Kxg7 26. Bxa7 Rxf1#)) 20... Be5 $11 21. Rc1 $132 {[%mdl 2048] White is fighting back} Bg6 22. b4 a5 23. a3 a4 24. f3 Rd8 25. fxe4 Bf7 (25... Bb2 $5 {[%cal Rb2c1]} 26. Rf1 Bxa3 $15) 26. b5 Bb2 {[%mdl 1024] Black has compensation.} 27. Rb1 $1 {[%cal Rb1b2]} Be5 28. Rc1 Bb3 29. b6 {[#]} (29. Bb6 $15 Rd2 30. Bf3) 29... Kf7 ({Black should try} 29... Bb2 $1 $17 {[%cal Rb2c1]} 30. Rc7 Bxa3) 30. Kf2 Ke6 31. Bc5 (31. Rc5 $11) 31... Rc8 $17 {Strongly threatening ...Rxc5!} 32. Be3 Bc2 33. Rh1 (33. h4 $17) 33... Rc3 $19 34. h4 h6 ({Black should play} 34... Rxa3 $19 {And now ...gxh4 would win.} 35. hxg5 {[#]} Rxe3 $1 {[%mdl 512]} 36. Kxe3 a3) 35. hxg5 $15 hxg5 36. Rh7 $1 Rxa3 37. Rxb7 Rb3 38. Ra7 a3 (38... Rb5 $1 $15) 39. Bc5 {[%csl Gc5][%cal Ra7e7] The position is equal.} Bg3+ 40. Kg1 {[%csl Gc5][%cal Ra7e7]} Rb1+ $1 41. Bf1 {[%csl Gc5][%cal Ra7e7]} Bxe4 42. Rxa3 Bf4 43. Kf2 Bd6 44. Bxd6 Kxd6 {Accuracy: White = 46%, Black = 56%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.3"]
[White "Domogaev, Sergey"]
[Black "Stankovic, Milos"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2334"]
[BlackElo "2466"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,102,-2,-10,-8,-10,-16,-18,-6,-37,-38,-69,-24,-33,-31,-50,-18,-27,-11,-16,-6,-44,-4,-9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-42,-34,-50,-18,-18,-6,-6,0,-36,0,-5,-19,-18,-4,-7,-10,-81,-57,-64,-54,-54,-43,-37,-34,-50,-44,-68,-66,-72,-37,-48,0,0,-8,-106,-106,-101,-98,-95,-101,-101,-92,-97,-34,-59,0,-102,-102,-103,-98,-339,-329]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. Qa4+ Bd7 5. Qb3 dxc4 6. Qxc4 Bg7 7. d4 O-O 8. e4 b5 {D90: Grünfeld: 4 Nf3 Bg7 sidelines} 9. Nxb5 Nxe4 10. Qxc7 Nc6 {White should prevent ...Nxd4!The position is equal.} 11. Qxd8 (11. Bd3 Nb4 12. Bxe4 Bxb5 13. Qxd8 Raxd8 14. Bd2 Nd3+ 15. Bxd3 Bxd3 16. Bc3 {½-½ (61) Kozul,Z (2632)-Ruck,R (2577) Slovenia 2014}) 11... Rfxd8 12. Be2 $146 ({Predecessor:} 12. Bd3 Nc5 13. Bc4 Na5 14. Be2 Ncb3 15. axb3 Nxb3 16. Rb1 {½-½ (31) Machelett,H (2376)-Zezulkin,J (2529) Germany 2001}) 12... Nb4 {[%mdl 1024] Black has compensation.} (12... a6 $5 {[%cal Ra6b5]} 13. Nc3 Nb4 $15) 13. Na3 Be6 14. Be3 Nd5 15. Bd3 Bf5 16. Bc4 Rab8 17. Bb3 Nxe3 18. fxe3 Bh6 19. Ke2 Be6 20. Bxe6 Rxb2+ ({Much worse is} 20... fxe6 $6 21. Nc4 $16) 21. Kd3 Nc5+ $1 {[%mdl 64] Double Attack} 22. Kc3 Na4+ 23. Kd3 {aiming for Bb3.} Nc5+ 24. Kc3 Na4+ 25. Kd3 {Hoping for Bb3.} fxe6 26. Nc4 Rxg2 {Threatens to win with ...Nc5+.} 27. Rhg1 $1 {[%cal Rg1g2]} Nc5+ 28. Kc3 Ne4+ 29. Kd3 Nc5+ 30. Kc3 Ne4+ (30... Rf2 {with more complications.} 31. Nfe5 Ne4+ 32. Kd3 Nf6 33. h4 Rf5) 31. Kd3 $132 {[%mdl 2048] White is not holding back} Rxg1 32. Rxg1 Nd6 33. Nce5 Rb8 34. Rg2 (34. Rc1 $11 {keeps the balance.}) 34... Rb4 35. Kc3 Rb6 36. Re2 Nb5+ 37. Kc4 Nc7 38. e4 Ne8 39. Nd7 Nd6+ 40. Kc3 Rb1 41. Nc5 Rf1 42. Ne5 Bg7 43. Nxe6 {[#]} (43. Nc6 $1 $11) 43... Nb5+ $1 $17 44. Kc4 Nxd4 $1 {[%mdl 64] Remove Defender} 45. Nxd4 Bxe5 {[%mdl 4096] Endgame KRB-KRN} 46. Nc6 {[#]} Rc1+ $1 47. Kb5 Rb1+ (47... Bd6 $17 {Strongly threatening ...Rc5+.} 48. Nxa7 Rc5+ 49. Ka6 Rh5) 48. Kc4 $1 $15 Rc1+ (48... Bd6 $15 49. Nxa7 Rc1+ 50. Kb3 Kf7) 49. Kd5 (49. Kb5 $1 $11 {remains equal.} Rb1+ 50. Kc4 Rc1+) 49... Bd6 $17 {...Rc5+ is the strong threat.} 50. Nxa7 Rc5+ 51. Ke6 $2 (51. Kd4 $17 {was forced.} e5+ 52. Ke3) 51... Bb8 {Accuracy: White = 48%, Black = 52%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.4"]
[White "Budnikov, Oleg"]
[Black "Pushkov, Nikolai"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2432"]
[BlackElo "2239"]
[Annotator "ChessBase"]
[PlyCount "86"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:10:15]} e6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:15]} d5 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:04]} dxe4 {[%emt 0:00:47]} 4. Nxe4 {[%emt 0:00:07]} Nd7 {[%emt 0:00:10]} 5. Bd3 {[%emt 0:00:17]} Ngf6 {[%emt 0:00:11]} 6. Qe2 {[%emt 0:00:08]} c5 {[%emt 0:00:52]} 7. Nxf6+ {[%emt 0:00:13]} Nxf6 {[%emt 0:00:14]} 8. dxc5 {[%emt 0:00:23]} Bxc5 {[%emt 0:01:25]} 9. Nf3 {[%emt 0:00:10]} Qc7 {[%emt 0:03:57]} 10. Bd2 {[%emt 0:01:18]} O-O {[%emt 0:04:49]} 11. O-O-O {[%emt 0:00:11]} b6 {[%emt 0:00:13]} 12. Bc3 {[%emt 0:01:58]} Bb7 {[%emt 0:00:23]} 13. Be5 {[%emt 0:03:02]} Qe7 {[%emt 0:01:09]} 14. h4 {[%emt 0:00:29]} Rfd8 {[%emt 0:02:02]} 15. Rh3 {[%emt 0:01:12]} Bd6 {[%emt 0:02:31]} 16. Rg3 {[%emt 0:07:31]} Bxf3 {[%emt 0:03:45]} 17. gxf3 {[%emt 0:00:48]} Bxe5 {[%emt 0:00:09]} 18. Qxe5 {[%emt 0:00:05]} Rd5 {[%emt 0:00:47]} 19. Bxh7+ {[%emt 0:00:20]} Kf8 {[%emt 0:02:45]} 20. Rxd5 {[%emt 0:02:16]} exd5 {[%emt 0:00:04]} 21. Qxe7+ {[%emt 0:00:13]} Kxe7 {[%emt 0:00:07]} 22. Bd3 {[%emt 0:00:39]} g6 {[%emt 0:02:05]} 23. f4 {[%emt 0:00:33]} Rh8 {[%emt 0:00:15]} 24. f5 {[%emt 0:05:15]} gxf5 {[%emt 0:00:25]} 25. Bxf5 {[%emt 0:01:40]} Rxh4 {[%emt 0:00:10]} 26. Ra3 {[%emt 0:00:14]} a5 {[%emt 0:00:12]} 27. Rb3 {[%emt 0:00:04]} Rf4 {[%emt 0:00:42]} 28. Bd3 {[%emt 0:00:10]} Nd7 {[%emt 0:01:15]} 29. Bb5 {[%emt 0:00:21]} Nc5 {[%emt 0:00:30]} 30. Re3+ {[%emt 0:00:07]} Kd6 {[%emt 0:00:05]} 31. f3 {[%emt 0:00:30]} d4 {[%emt 0:01:26]} 32. Re8 {[%emt 0:00:10]} Rxf3 {[%emt 0:00:22]} 33. Rd8+ {[%emt 0:00:06]} Ke5 {[%emt 0:00:38]} 34. Bc4 {[%emt 0:00:11]} f5 {[%emt 0:03:44]} 35. Rd5+ {[%emt 0:00:22]} Ke4 {[%emt 0:00:04]} 36. Rd6 {[%emt 0:00:10]} Rg3 {[%emt 0:01:51]} 37. b3 {[%emt 0:00:19]} d3 {[%emt 0:01:29]} 38. cxd3+ {[%emt 0:01:42]} Nxd3+ {[%emt 0:00:02]} 39. Kd2 {[%emt 0:01:03]} Rg2+ {[%emt 0:03:23]} 40. Kc3 {[%emt 0:00:28]} Nb4 {[%emt 0:00:28]} 41. Re6+ {[%emt 0:30:19]} Kf4 {[%emt 0:30:07]} 42. a3 {[%emt 0:00:41]} Rc2+ {[%emt 0:09:21]} 43. Kd4 {[%emt 0:03:20]} Rd2+ {[%emt 0:00:10] Ke4+ Ke5+} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.5"]
[White "Czerw, Dawid"]
[Black "Low, Zhen Yu Cyrus"]
[Result "1/2-1/2"]
[ECO "D83"]
[WhiteElo "2262"]
[BlackElo "2415"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,147,31,12,22,6,6,8,8,6,22,10,31,9,24,0,11,11,0,-10,11,0,33,30,29,31,26,0,0,0,0,0,20,0,10,0,0,0,2,0,1,0,12,0,4,0,20,16,10,5,5,5,7,7,8,0,9,0,12,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-5,-6,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 O-O 6. Rc1 Be6 {D83: Grünfeld: 4 Bf4 Bg7 5 e3 0-0} 7. cxd5 Nxd5 8. Nxd5 Qxd5 (8... Bxd5 9. Bxc7 Qd7 10. Nf3 Nc6 11. Bg3 Rac8 12. Bb5 a6 13. Bxc6 Rxc6 14. b3 Rxc1 15. Qxc1 {½-½ (28) So,W (2780)-Wei,Y (2729) chess.com INT 2018}) 9. b3 c6 10. Nf3 Nd7 11. Bc4 Qf5 $146 ({Predecessor:} 11... Qa5+ 12. Qd2 Qxd2+ 13. Nxd2 Bxc4 14. Nxc4 {½-½ (28) Landaw,M (2106)-Chakraborty,D (2174) Las Vegas 2014}) 12. Bd3 Qa5+ 13. Qd2 Qxd2+ 14. Nxd2 Rac8 15. Ke2 Nf6 16. Be5 Rfd8 17. Rhd1 Bf8 18. Bxf6 exf6 {The position is equal.} 19. Ne4 f5 20. Nc5 Bxc5 (20... Rc7 {is more complex.} 21. g3 Bc8 22. Kf1 Be6 23. Ke2) 21. dxc5 Kf8 22. Bc4 Rxd1 23. Kxd1 $11 {[%mdl 4096] Endgame KRB-KRB} Ke7 24. Ke2 Rd8 25. Bxe6 Kxe6 {KR-KR} 26. h4 Ke5 27. g3 f6 28. Rc4 Rd5 29. b4 Rd8 30. Rc1 h6 31. Rb1 Rd7 32. Rc1 g5 33. Rc4 Rd8 34. f4+ Ke6 35. h5 Rg8 36. Kf2 a5 37. a3 axb4 38. Rxb4 Rg7 39. Rd4 Rg8 40. Rb4 Rb8 41. Rd4 Ra8 42. fxg5 hxg5 43. Rb4 Ra7 44. e4 Rxa3 45. exf5+ Kxf5 46. g4+ Ke5 47. Rxb7 Rc3 48. h6 Rh3 49. h7 Kd5 50. Rf7 (50. Rd7+ {seems wilder.} Ke6 51. Ra7 Kd5 52. Rd7+) 50... Rh6 51. Kg3 Kxc5 52. Rxf6 (52. Rd7 {looks sharper.} Kb4 53. Kf3 c5 54. Rb7+ Kc3 55. Ke3) 52... Rxh7 53. Rf5+ Kd4 {Hoping for ...Rg7.} 54. Rxg5 c5 55. Rg8 Rc7 56. Rd8+ Ke4 57. Re8+ Kd3 58. Rd8+ Ke3 59. Re8+ Kd2 60. Rd8+ Kc1 61. g5 c4 62. Kg4 c3 63. Rh8 c2 64. Rh2 Kb1 {[#]} (64... Kd1 {with more complications.} 65. Rh1+ Ke2 66. g6 Rc8 67. Kf5 c1=Q) 65. Rxc2 $1 {[%mdl 512]} Kxc2 {KR-KP} 66. Kf5 Rc5+ 67. Kf6 Rc6+ 68. Kf7 Kd3 69. g6 Ke4 70. g7 Kf5 71. g8=Q Rc7+ 72. Kf8 {[#] White wants to mate with Qd5+.} Rc8+ 73. Kf7 Rxg8 74. Kxg8 {Accuracy: White = 61%, Black = 66%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.6"]
[White "Lalic, Bogdan"]
[Black "Vignesh B"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2402"]
[BlackElo "1912"]
[Annotator "ChessBase"]
[PlyCount "39"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:01:33]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:20]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:07]} Bb4+ 4. Nbd2 O-O {[%emt 0:00:05]} 5. a3 {[%emt 0:00:15]} Be7 {[%emt 0:00:06]} 6. e4 {[%emt 0:00:10]} d5 {[%emt 0:00:06]} 7. e5 {[%emt 0:00:11]} Nfd7 {[%emt 0:00:06]} 8. Bd3 {[%emt 0:00:10]} c5 {[%emt 0:00:52]} 9. O-O {[%emt 0:00:08]} Nc6 {[%emt 0:01:06]} 10. Re1 {[%emt 0:00:11]} dxc4 {[%emt 0:02:59]} 11. Nxc4 {[%emt 0:00:49]} cxd4 {[%emt 0:04:05]} 12. b4 {[%emt 0:02:12]} b5 {[%emt 0:20:39]} 13. Be4 {[%emt 0:02:43]} Bb7 {[%emt 0:03:02]} 14. Nxd4 {[%emt 0:02:07]} Nxd4 {[%emt 0:02:14]} 15. Bxb7 {[%emt 0:00:07]} Rb8 {[%emt 0:05:18]} 16. Na5 {[%emt 0:17:23]} Nc5 {[%emt 0:11:06]} 17. Bf3 {[%emt 0:02:27]} Rc8 {[%emt 0:07:26]} 18. Be3 {[%emt 0:08:50]} Nd3 {[%emt 0:00:10]} 19. Bxd4 {[%emt 0:11:31]} Nxe1 {[%emt 0:00:53]} 20. Be4 {[%emt 0:00:08]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.7"]
[White "Svanda, Ondrej"]
[Black "Quesada Vera, Liordis"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2257"]
[BlackElo "2386"]
[Annotator "ChessBase"]
[PlyCount "58"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} Nbd7 {[%emt 0:00:00]} 4. Nf3 {[%emt 0:00:49]} e5 {[%emt 0:00:01]} 5. Bc4 {[%emt 0:00:37]} Be7 {[%emt 0:00:09]} 6. O-O {[%emt 0:00:18]} O-O {[%emt 0:00:05]} 7. a4 {[%emt 0:00:07]} c6 {[%emt 0:00:09]} 8. Re1 {[%emt 0:03:11]} Qc7 {[%emt 0:01:08]} 9. h3 {[%emt 0:05:50]} h6 {[%emt 0:04:57]} 10. Be3 {[%emt 0:02:42]} Rd8 {[%emt 0:04:27]} 11. Qb1 {[%emt 0:03:08]} exd4 {[%emt 0:09:28]} 12. Bxd4 {[%emt 0:08:05]} Ne5 {[%emt 0:00:25]} 13. Nxe5 {[%emt 0:01:58]} dxe5 {[%emt 0:00:14]} 14. Be3 {[%emt 0:00:03]} Bb4 {[%emt 0:00:35]} 15. f3 {[%emt 0:01:02]} Qe7 {[%emt 0:19:17]} 16. Qa2 {[%emt 0:04:45]} Rf8 {[%emt 0:13:05]} 17. Qb3 {[%emt 0:03:24]} Nh5 {[%emt 0:01:14]} 18. Red1 {[%emt 0:04:19]} Nf4 {[%emt 0:16:34]} 19. Ne2 {[%emt 0:05:44]} b5 {[%emt 0:18:58]} 20. axb5 {[%emt 0:01:22]} cxb5 {[%emt 0:00:02]} 21. Bxb5 {[%emt 0:01:23]} Rb8 {[%emt 0:00:50]} 22. Bxf4 {[%emt 0:23:59]} exf4 {[%emt 0:01:33]} 23. Qd3 {[%emt 0:00:05]} Qg5 {[%emt 0:01:53]} 24. Nd4 {[%emt 0:07:38]} Bc5 {[%emt 0:01:01]} 25. Bc4 {[%emt 0:02:24]} Bxh3 {[%emt 0:01:31]} 26. Rd2 {[%emt 0:00:13]} Rxb2 {[%emt 0:00:52]} 27. c3 {[%emt 0:04:47]} Rfb8 {[%emt 0:01:10]} 28. Qe2 {[%emt 0:01:51]} Bxg2 {[%emt 0:00:42]} 29. Rxb2 {[%emt 0:00:38]} Bxf3+ {[%emt 0:00:07]} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.8"]
[White "Riha, Vojtech"]
[Black "Malovanyi, Yulian"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "2247"]
[BlackElo "2360"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,73,11,18,20,20,10,23,20,36,18,65,13,20,-23,-20,-47,0,-11,0,-46,-49,-38,-18,-24,-21,-61,-59,-87,-93,-160,-155,-139,-163,-191,-70,-93,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,752,759,768,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. b4 b6 3. bxc5 bxc5 4. Nc3 d6 (4... Nc6 5. Nf3 g6 6. Bc4 Bg7 7. O-O e6 8. Rb1 Nge7 9. d4 O-O 10. Ne2 d5 11. exd5 exd5 12. Bb5 Nxd4 13. Nexd4 cxd4 14. Nxd4 {½-½ (20) Senders,M (2289)-Martinovic,S (2543) Split 2019}) 5. Bb5+ $146 ({Predecessor:} 5. Nf3 Nf6 6. Bc4 g6 7. O-O Bg7 8. Rb1 O-O 9. d3 Nc6 10. Bg5 Bg4 11. Bd5 Bxf3 12. Qxf3 {0-1 (33) Burrows,N (1868)-Vijayakumar,A (1630) London 2015}) 5... Bd7 6. Nf3 {B20: Sicilian: Unusual White 2nd moves} g6 7. O-O Bg7 {Strongly threatening ...Bxb5.} 8. Rb1 {[%cal Ba1b1,Bb1b5,Bb5b6,Bb6d6][%mdl 32] White has an edge.} Nc6 9. Re1 e6 10. Bxc6 (10. d4 $14) 10... Bxc6 $11 11. e5 Ne7 12. Nb5 Bxb5 13. Rxb5 O-O 14. Bb2 Qd7 15. c4 a6 16. Rb6 d5 17. cxd5 Nxd5 18. Rd6 Qb5 19. Qc2 ({White should play} 19. Ba1) 19... Nb4 $1 $17 {[%cal Rb4c2]} 20. Qe4 Nxa2 21. Bc3 Nb4 (21... a5 $19 {...a4 is the strong threat.} 22. Rb1 Nb4) 22. h4 $1 $15 {[#]} Rad8 {[#]} (22... h6 $1 $17 23. Rb1 a5) 23. h5 $1 $11 {[%mdl 512] Black must now prevent hxg6.} Nd5 $1 (23... gxh5 24. Ng5) 24. Rb1 Nxc3 25. dxc3 Rxd6 26. exd6 Qd7 27. Rb6 Bxc3 28. Rxa6 Bg7 29. Ne5 Qb5 30. Ra8 $1 f5 $2 {[%mdl 8192]} (30... Bxe5 $11 31. Rxf8+ Kxf8 32. Qxe5 Ke8) 31. Rxf8+ $18 Bxf8 {[#]} 32. Qa8 $2 (32. Qh4 $1 $18 Qb1+ 33. Kh2) 32... Qe2 $11 {The position is equal.} 33. d7 Qd1+ $1 ({Don't go for} 33... Qe1+ $2 34. Kh2 $18) 34. Kh2 {Intending g3 and mate.} Qxh5+ 35. Kg1 Qd1+ 36. Kh2 Qh5+ 37. Kg1 {Accuracy: White = 55%, Black = 58%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.9"]
[White "Wiley, Tom E"]
[Black "Vokac, Marek"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "2170"]
[BlackElo "2334"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,98,13,17,17,47,20,28,37,58,32,63,47,68,40,66,49,57,49,48,53,68,14,24,27,94,65,118,101,83,-24,-6,-79,-66,-70,-62,-54,0,-22,-26,-25,0,0,0,0,0,0,0,-9,0,0,0,0,0,-12,-6,-114,-114,-114,-114,-114,-114,-114,-114,-114,-114,-114,-114,-114,-107,-107,-107,-107,-107,-108,-107,-107,-107,-1159,-1000,-5539,-5114,-5106,-5069]} 1. d4 g6 2. c4 Nf6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. d5 a5 8. Bg5 h6 9. Bh4 Qe8 10. Nd2 {E92: King's Indian: Classical: 6 Be2 e5: 7 dxe5, 7 Be3 and Petrosian System without 7...Nbd7} h5 11. Bg5 Nh7 12. Be3 {White has an edge.} Qe7 $146 ({Predecessor:} 12... f5 13. f3 h4 14. c5 h3 15. g3 f4 16. Bf2 fxg3 17. hxg3 dxc5 18. Bxc5 {1-0 (34) Indjic,A (2430)-Markovic,M (2480) Vrnjacka Banja 2012}) 13. O-O (13. c5 $5) 13... Nd7 14. a3 b6 15. Rc1 Bf6 16. b4 axb4 17. axb4 Bg5 18. Bxg5 Nxg5 19. Nb3 (19. Qc2 $14) 19... h4 20. Qd2 Kg7 (20... f5 $11) 21. f3 f5 (21... Bb7 $14) 22. exf5 $16 Rxf5 23. f4 (23. Rce1 $16) 23... Rxf4 $1 $11 24. Rxf4 (24. h3 $1 $11 {remains equal.}) 24... exf4 $17 25. Qxf4 Ne5 26. Nd4 Bd7 (26... h3 $1 $15) 27. Ne4 Nxe4 28. Qxe4 Rf8 29. Rf1 Rxf1+ 30. Bxf1 Qf6 31. Be2 Qg5 32. Nf3 Qc1+ 33. Bf1 Nxf3+ 34. Qxf3 Qe1 35. Qf4 Bf5 36. c5 (36. b5 $11) 36... Qe4 37. Qxe4 Bxe4 38. cxb6 cxb6 {[%mdl 4096] Endgame KB-KB} 39. Kf2 Kf6 $1 40. Ke3 {[#]} Ke5 $1 41. g3 hxg3 ({Of course not} 41... Kxd5 $6 42. gxh4 Bf5 43. Be2 $11) 42. hxg3 Bxd5 43. Bd3 g5 44. Bg6 Be6 45. Bh7 d5 46. Bg6 Bf5 47. Bh5 $2 {[%mdl 8192]} (47. Be8 $17) 47... d4+ $19 {Black is clearly winning.} 48. Ke2 {[#]} Kd5 $1 {[%cal Rd5c4]} 49. Bf7+ Be6 {Accuracy: White = 33%, Black = 52%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.10"]
[White "Liu, Zhaoqi"]
[Black "Toman, Jan"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2328"]
[BlackElo "2101"]
[Annotator "ChessBase"]
[PlyCount "94"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:03:42]} Nf6 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:12]} g6 {[%emt 0:00:23]} 3. g3 {[%emt 0:00:06]} Bg7 {[%emt 0:00:39]} 4. Bg2 {[%emt 0:00:11]} c6 {[%emt 0:00:35]} 5. e4 {[%emt 0:01:48]} d6 {[%emt 0:01:09]} 6. Nge2 {[%emt 0:00:17]} e5 {[%emt 0:03:18]} 7. d4 {[%emt 0:00:15]} exd4 {[%emt 0:01:23]} 8. Nxd4 {[%emt 0:00:09]} O-O {[%emt 0:02:18]} 9. O-O {[%emt 0:00:08]} Nbd7 {[%emt 0:06:46]} 10. h3 {[%emt 0:06:16]} Re8 {[%emt 0:01:41]} 11. Re1 {[%emt 0:03:44]} Nc5 {[%emt 0:14:31]} 12. b4 {[%emt 0:05:56]} Ne6 {[%emt 0:00:58]} 13. Nb3 {[%emt 0:06:21]} Nh5 {[%emt 0:14:46]} 14. Qd3 {[%emt 0:04:18]} Qf6 {[%emt 0:24:57]} 15. Bd2 {[%emt 0:01:21]} Ng5 {[%emt 0:02:00]} 16. Kh2 {[%emt 0:11:25]} Nxh3 {[%emt 0:01:09]} 17. Bxh3 {[%emt 0:00:07]} Qxf2+ {[%emt 0:00:14]} 18. Bg2 {[%emt 0:00:07]} Nxg3 {[%emt 0:00:16]} 19. Qf3 {[%emt 0:04:18]} Qxf3 {[%emt 0:08:05]} 20. Bxf3 {[%emt 0:00:02]} Be5 {[%emt 0:00:48]} 21. Kg2 {[%emt 0:00:01]} h5 {[%emt 0:01:09]} 22. Rac1 {[%emt 0:00:04]} f6 {[%emt 0:05:09]} 23. Ne2 {[%emt 0:00:26]} Nxe2 {[%emt 0:01:00]} 24. Rxe2 {[%emt 0:00:01]} Be6 {[%emt 0:01:31]} 25. Na5 {[%emt 0:02:37]} Re7 {[%emt 0:00:34]} 26. Bc3 {[%emt 0:00:01]} Rh7 {[%emt 0:02:11]} 27. Bxe5 {[%emt 0:00:08]} dxe5 {[%emt 0:00:07]} 28. Rd2 {[%emt 0:00:19]} g5 {[%emt 0:02:01]} 29. Nb3 {[%emt 0:01:31]} Rf8 {[%emt 0:01:13]} 30. Nc5 {[%emt 0:01:02]} Bc8 {[%emt 0:00:01]} 31. Rcd1 {[%emt 0:00:02]} g4 {[%emt 0:02:00]} 32. Be2 {[%emt 0:00:01]} f5 {[%emt 0:00:39]} 33. exf5 {[%emt 0:00:12]} Bxf5 {[%emt 0:00:16]} 34. Nd7 {[%emt 0:00:51]} Be4+ {[%emt 0:00:53]} 35. Kg1 {[%emt 0:00:01]} Rf5 {[%emt 0:00:04]} 36. Nc5 {[%emt 0:00:02]} Bf3 {[%emt 0:00:44]} 37. Rd8+ {[%emt 0:00:43]} Kg7 {[%emt 0:00:51]} 38. R1d7+ {[%emt 0:00:21]} Kh6 {[%emt 0:00:41]} 39. Rxh7+ {[%emt 0:00:37]} Kxh7 {[%emt 0:00:02]} 40. Bd3 {[%emt 0:00:36]} e4 {[%emt 0:00:28]} 41. Nxe4 {[%emt 0:30:24]} Kh6 {[%emt 0:31:21]} 42. Ng3 {[%emt 0:06:56]} Rf7 {[%emt 0:00:00]} 43. Rh8+ {[%emt 0:00:00]} Kg5 {[%emt 0:00:00]} 44. Rxh5+ {[%emt 0:00:00]} Kf4 {[%emt 0:00:00]} 45. Kf2 {[%emt 0:00:00]} b6 {[%emt 0:00:00]} 46. a3 {[%emt 0:00:00]} Rf6 {[%emt 0:00:00]} 47. Rh7 {[%emt 0:00:00]} a5 {[%emt 0:00:00]} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.11"]
[White "Strebkovs, Andrejs"]
[Black "Jordanov Mihail"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2278"]
[BlackElo "2012"]
[Annotator "ChessBase"]
[PlyCount "111"]
[EventDate "2020.01.10"]
[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. Nf3 {[%emt 0:00:04]} b6 {[%emt 0:00:00]} 4. g3 {[%emt 0:00:20]} Ba6 {[%emt 0:00:21]} 5. b3 {[%emt 0:00:22]} Bb4+ {[%emt 0:00:39]} 6. Bd2 {[%emt 0:00:35]} Be7 {[%emt 0:01:39]} 7. Bg2 {[%emt 0:01:41]} O-O {[%emt 0:01:20]} 8. O-O {[%emt 0:00:31]} c6 {[%emt 0:01:17]} 9. Bc3 {[%emt 0:01:49]} d5 {[%emt 0:00:59]} 10. Ne5 {[%emt 0:00:46]} Nfd7 {[%emt 0:01:20]} 11. Nxd7 {[%emt 0:01:04]} Nxd7 {[%emt 0:00:12]} 12. Nd2 {[%emt 0:00:47]} f5 {[%emt 0:09:04]} 13. Re1 {[%emt 0:04:42]} Nf6 {[%emt 0:21:04]} 14. a4 {[%emt 0:07:06]} Qc7 {[%emt 0:13:55]} 15. Rc1 {[%emt 0:03:11]} Rad8 {[%emt 0:08:31]} 16. Qc2 {[%emt 0:04:28]} Ne4 {[%emt 0:11:57]} 17. Nxe4 {[%emt 0:05:46]} dxe4 {[%emt 0:00:26]} 18. f3 {[%emt 0:06:04]} Bg5 {[%emt 0:00:28]} 19. e3 {[%emt 0:03:14]} exf3 {[%emt 0:01:26]} 20. Bxf3 {[%emt 0:00:11]} Bb7 {[%emt 0:00:29]} 21. Rcd1 {[%emt 0:02:11]} c5 {[%emt 0:01:23]} 22. d5 {[%emt 0:01:58]} exd5 {[%emt 0:03:14]} 23. cxd5 {[%emt 0:01:00]} Qf7 {[%emt 0:03:20]} 24. Qg2 {[%emt 0:02:56]} Rd7 {[%emt 0:03:29]} 25. e4 {[%emt 0:05:35]} Rfd8 {[%emt 0:04:50]} 26. e5 {[%emt 0:05:09]} Bxd5 {[%emt 0:01:33]} 27. Rxd5 {[%emt 0:00:20]} Rxd5 {[%emt 0:00:30]} 28. e6 {[%emt 0:00:15]} Qb7 {[%emt 0:01:00]} 29. e7 {[%emt 0:04:12]} Bxe7 {[%emt 0:00:16]} 30. Bxd5+ {[%emt 0:00:15]} Rxd5 {[%emt 0:00:47]} 31. Rxe7 {[%emt 0:00:37]} Rd1+ {[%emt 0:01:14]} 32. Re1 {[%emt 0:00:16]} Qxg2+ {[%emt 0:00:20]} 33. Kxg2 {[%emt 0:00:03]} Rd3 {[%emt 0:00:07]} 34. Rc1 {[%emt 0:02:07]} a6 {[%emt 0:01:26]} 35. Kf2 {[%emt 0:00:39]} b5 {[%emt 0:00:34]} 36. Ke2 {[%emt 0:00:58]} Rd7 {[%emt 0:01:12]} 37. Bd2 {[%emt 0:01:17]} bxa4 {[%emt 0:01:49]} 38. bxa4 {[%emt 0:00:08]} Rd4 {[%emt 0:00:32]} 39. a5 {[%emt 0:00:25]} c4 {[%emt 0:04:40]} 40. Rb1 {[%emt 0:03:02]} Re4+ {[%emt 0:00:10]} 41. Kd1 {[%emt 0:32:34]} Re7 {[%emt 0:05:20]} 42. Rb6 {[%emt 0:00:00]} Ra7 {[%emt 0:00:06]} 43. Rc6 {[%emt 0:00:00]} Kf7 {[%emt 0:00:13]} 44. Kc2 {[%emt 0:00:00]} Ke7 {[%emt 0:03:35]} 45. Kc3 {[%emt 0:00:00]} Kd7 {[%emt 0:00:17]} 46. Rxc4 {[%emt 0:00:00]} Kd6 {[%emt 0:00:44]} 47. Be3 {[%emt 0:00:00]} Rb7 {[%emt 0:00:23]} 48. Rb4 {[%emt 0:00:00]} Rxb4 {[%emt 0:01:27]} 49. Kxb4 {[%emt 0:00:00]} Kd5 {[%emt 0:00:14]} 50. Bc5 {[%emt 0:00:00]} g5 {[%emt 0:00:20]} 51. Be7 {[%emt 0:00:00]} h6 {[%emt 0:01:09]} 52. Bf8 {[%emt 0:00:00]} h5 {[%emt 0:01:42]} 53. Bh6 {[%emt 0:00:00]} h4 {[%emt 0:00:36]} 54. gxh4 {[%emt 0:00:00]} gxh4 {[%emt 0:00:13]} 55. h3 {[%emt 0:00:00]} Ke4 {[%emt 0:00:14]} 56. Bg5 {[%emt 0:00:00]} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.12"]
[White "Wang, Yukun"]
[Black "Neuman, Petr"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "1990"]
[BlackElo "2371"]
[Annotator "ChessBase"]
[PlyCount "67"]
[EventDate "2020.01.10"]
[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 0:00:01]} 5. Nc3 {[%emt 0:00:00]} a6 {[%emt 0:00:03]} 6. Be3 {[%emt 0:01:27]} e6 {[%emt 0:00:34]} 7. f3 {[%emt 0:02:12]} b5 {[%emt 0:00:15]} 8. g4 {[%emt 0:00:05]} Bb7 {[%emt 0:00:37]} 9. Qd2 {[%emt 0:00:14]} Nfd7 {[%emt 0:01:15]} 10. g5 {[%emt 0:04:45]} Nb6 {[%emt 0:00:22]} 11. Bd3 {[%emt 0:14:16]} N8d7 {[%emt 0:01:11]} 12. a4 {[%emt 0:04:11]} bxa4 {[%emt 0:17:47]} 13. Nxa4 {[%emt 0:02:49]} Nxa4 {[%emt 0:01:21]} 14. Rxa4 {[%emt 0:00:03]} d5 {[%emt 0:01:40]} 15. Nb3 {[%emt 0:07:05]} Bc6 {[%emt 0:17:41]} 16. Rxa6 {[%emt 0:01:14]} Rxa6 {[%emt 0:00:38]} 17. Bxa6 {[%emt 0:00:04]} dxe4 {[%emt 0:02:15]} 18. Nd4 {[%emt 0:20:43]} Ba8 {[%emt 0:06:37]} 19. O-O {[%emt 0:03:45]} Bc5 {[%emt 0:04:38]} 20. b4 {[%emt 0:00:28]} Bb6 {[%emt 0:00:06]} 21. c4 {[%emt 0:01:03]} O-O {[%emt 0:00:19]} 22. c5 {[%emt 0:03:01]} Bxc5 {[%emt 0:00:11]} 23. bxc5 {[%emt 0:00:21]} Nxc5 {[%emt 0:00:06]} 24. Be2 {[%emt 0:00:26]} exf3 {[%emt 0:01:41]} 25. Nxf3 {[%emt 0:00:51]} Qxd2 {[%emt 0:01:32]} 26. Nxd2 {[%emt 0:00:04]} Ne4 {[%emt 0:00:20]} 27. Bf3 {[%emt 0:03:39]} Nc3 {[%emt 0:01:03]} 28. Bxa8 {[%emt 0:02:00]} Rxa8 {[%emt 0:00:04]} 29. Nc4 {[%emt 0:00:34]} Nd5 30. Bd2 {[%emt 0:04:40]} Ra2 {[%emt 0:17:50]} 31. Rb1 {[%emt 0:01:04]} f6 {[%emt 0:00:09]} 32. Rb7 {[%emt 0:01:15]} fxg5 {[%emt 0:00:54]} 33. Bxg5 {[%emt 0:01:31]} h6 {[%emt 0:00:05]} 34. Bd8 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.13"]
[White "Laverton, Christian"]
[Black "Laxman, R.R."]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "2109"]
[BlackElo "2441"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,97,10,17,0,0,0,0,0,0,0,0,-37,-24,-47,-40,-36,-28,-38,-39,-67,-44,-45,-26,-26,-19,-28,38,6,14,12,22,5,23,6,49,44,43,20,28,8,48,23,50,56,310,302,306,299,303,298,286,122,393,395,384,378,462,443,527,526,659,647,769,777,739,747,29992,727,635,101,94,58,58,52,46,4,58,0,85,71,77,47,61,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Ba6 5. Qc2 c5 6. d5 {E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations} exd5 7. cxd5 Bb7 $1 8. Bg2 Nxd5 9. O-O {Black must now prevent Ng5.} Be7 10. e4 (10. Rd1 Nc6 11. a3 Nf6 12. e4 O-O 13. e5 Ne8 14. Nc3 Nc7 {1-0 (32) Aronian,L (2775)-Bartel,M (2634) Moscow 2019}) 10... Nc7 11. Rd1 O-O 12. Nc3 Nc6 13. Bf4 $146 ({Predecessor:} 13. Be3 Bf6 14. Qd2 Ne6 15. Qxd7 {½-½ (37) Tregubov,P (2594)-Sargissian,G (2667) Mainz 2006}) 13... Ne6 14. Nd5 Nxf4 15. Nxf4 Rc8 16. e5 Qe8 17. Qf5 Nb8 ({Black should play} 17... Rd8 $11) 18. Nd5 Bxd5 (18... g6 {is more complex.} 19. Qe4 Kh8 20. Qd3 Bxd5 21. Qxd5 f6) 19. Rxd5 g6 20. Qg4 f5 21. Qa4 Nc6 22. Rad1 $36 {[%mdl 3072] White has compensation. White has the initiative.} Rc7 23. Qc4 {aiming for Rxd7+.} Kh8 24. a3 Nd8 25. Qd3 {[%cal Rd5d7]} Ne6 26. Rxd7 Qb8 $2 {[%mdl 8192]} (26... c4 $14 27. Qd5 Rxd7 28. Qxd7 Qxd7 29. Rxd7 Bc5) 27. Qc4 $18 Ng7 28. e6 b5 29. Qd5 ({Resist} 29. Qc3 $6 Bf6 $18) 29... Bf6 30. b3 (30. h4 $18 {and White stays clearly on top.}) 30... Qb6 $2 {[%mdl 8192]} (30... Re8 $16 {is a better defense.}) 31. e7 {[%mdl 64] Deflection} Bxe7 {[#] ...Rxd7 is the strong threat.} 32. Ne5 $1 {[%cal Re5f7] Strongly threatening Nf7+.} ({Not} 32. Qe5 Rxd7 33. Rxd7 Bf6 $16) 32... Ne6 {If Black can now play ...c4 this consolidates a bit.} 33. Rxc7 Nxc7 34. Qd7 Re8 35. Nc6 Bf8 36. Qf7 {Threatening mate with Rd7!} Bg7 {[#]} 37. Rd7 $1 {[%csl Gd7][%cal Rf7g7][%mdl 512]} Re1+ 38. Bf1 {[%csl Gd7][%cal Rf7g7]} Ne6 39. Qe8+ $2 (39. Rb7 $18 {is the precise move to win.} Qxb7 40. Qxb7) 39... Nf8 $16 40. Qxe1 (40. Qc8 {keeps more tension.} c4 41. Rf7 Qc5 42. b4 Qd6 43. Ne7) 40... Nxd7 41. Qe8+ Nf8 42. Bg2 Qc7 ({Better is} 42... h5 $11) 43. Ne7 (43. Bd5 $14 Qd7 44. Qxd7 Nxd7 45. Nxa7) 43... Qd6 {[#]} (43... Qd7 $11 44. Qf7 Qe6) 44. Bd5 $1 Qf6 45. Nc6 (45. Ng8 $5 {[%cal Rg8f6]} Qb2 46. Kg2 $14) 45... a6 46. f4 (46. Nb8 $1 $14 Qd6 47. Qf7) 46... Qa1+ {The position is equal.} 47. Kg2 {White wants to mate with Qf7.} Qd1 ({Stronger than} 47... Qxa3 48. Qf7 Qb2+ 49. Kh3 Ne6 50. Qxe6 Qg2+ 51. Kxg2 h6 52. Qg8#) 48. Qf7 {[%csl Gd5][%cal Rf7g8]} Qe2+ 49. Kg1 {Accuracy: White = 48%, Black = 38%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.14"]
[White "Kozak, Antoni"]
[Black "Hrbek, Stepan"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2380"]
[BlackElo "2126"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,92,6,12,16,20,22,29,10,7,13,27,-1,0,-19,0,13,26,29,29,18,23,18,12,18,12,24,65,32,66,77,44,47,75,36,116,30,33,64,22,25,37,26,32,8,8,8,8,0,0,-7,-6,-10,-10,-16,-11,-12,-16,-66,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 Nbd7 {[%cal Bb8d7,Bd7b6,Bb6c8,Bc8d6][%mdl 32]} 8. Nge2 h6 9. Bh4 {D35: Queen's Gambit Declined: Exchange Variation} Nh5 10. Bxe7 Qxe7 11. g4 {White has an edge.} (11. Qd2 Nb6 12. f3 Bd7 13. O-O O-O 14. g4 Nf6 15. Ng3 Ne8 16. Rae1 {1-0 (43) Mamedyarov,S (2766)-Adams,M (2751) Sharjah 2017}) 11... Nhf6 12. Ng3 Nb6 13. Nf5 $146 ({Predecessor:} 13. h3 Bd7 14. Qf3 O-O-O 15. O-O-O Ne8 16. Rhe1 Qf6 {½-½ (65) Gareyev,T (2615)-Stremavicius,T (2422) Dallas 2017}) 13... Bxf5 14. gxf5 Nc8 15. Rg1 Nd6 16. Rxg7 O-O-O 17. Qc2 Rhg8 18. Rg3 $1 h5 19. O-O-O h4 $1 {[%cal Rh4g3]} 20. Rgg1 Kb8 21. Kb1 Ng4 22. Qe2 Nh6 23. Qf3 Qf6 24. Qf4 Ka8 (24... Nhxf5 $14 25. Rc1 Qh6) 25. f3 (25. Rxg8 $16 Rxg8 26. e4 Nxe4 27. Nxe4 dxe4 28. Bxe4 (28. Qxe4 Rd8 $14)) 25... Nhxf5 $11 26. Rxg8 Rxg8 27. e4 Qh6 $1 {[%cal Rh6f4]} ({Avoid the trap} 27... Qxd4 $2 28. Ne2 $18) 28. Qxh6 Nxh6 29. exd5 Rg2 30. dxc6 bxc6 {[%cal Bb7c6,Bc6d5][%mdl 32]} 31. Ne4 Nhf5 32. h3 Rh2 33. d5 cxd5 34. Nxd6 Nxd6 {[%mdl 4096] Endgame KRB-KRN} 35. Ba6 Kb8 36. Rc1 Nc4 (36... Rxh3 $15 37. Rc6 Rh1+ 38. Kc2 Nb7) 37. Bxc4 {The position is equal.} dxc4 38. Rxc4 Rxh3 {Strongly threatening ...Rh1+. KR-KR} 39. Rf4 Rh1+ 40. Kc2 h3 41. Rxf7 Rf1 {[#] Threatens to win with ...h2.} 42. Rh7 Rxf3 43. Kd2 Rg3 44. a4 Rg2+ 45. Kc3 h2 46. b4 Rg3+ {Accuracy: White = 53%, Black = 65%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.15"]
[White "Mis, Mieszko"]
[Black "Sindler, Michal"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2349"]
[BlackElo "2119"]
[Annotator "ChessBase"]
[PlyCount "65"]
[EventDate "2020.01.10"]
[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 0:02:02]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:00:16]} 3. g3 {[%emt 0:00:00]} Bg7 {[%emt 0:00:07]} 4. Bg2 {[%emt 0:00:00]} O-O {[%emt 0:00:30]} 5. Nc3 {[%emt 0:00:00]} d6 {[%emt 0:00:26]} 6. Nf3 {[%emt 0:00:00]} c6 {[%emt 0:00:08]} 7. O-O {[%emt 0:00:07]} Qa5 {[%emt 0:00:03]} 8. e4 {[%emt 0:00:04]} e5 {[%emt 0:00:25]} 9. h3 {[%emt 0:00:06]} Nbd7 {[%emt 0:00:39]} 10. Re1 {[%emt 0:01:17]} exd4 {[%emt 0:00:30]} 11. Nxd4 {[%emt 0:00:08]} Ne5 {[%emt 0:00:08]} 12. Bf1 {[%emt 0:00:55]} Re8 {[%emt 0:01:41]} 13. Be3 {[%emt 0:05:41]} c5 {[%emt 0:02:19]} 14. Nb3 {[%emt 0:11:48]} Qb4 {[%emt 0:08:30]} 15. Bd2 {[%emt 0:17:18]} Qb6 {[%emt 0:21:15]} 16. Nb5 {[%emt 0:08:47]} Be6 {[%emt 0:30:14]} 17. Ba5 {[%emt 0:00:55]} Qc6 {[%emt 0:00:43]} 18. Nc7 {[%emt 0:02:08]} Nxc4 {[%emt 0:03:21]} 19. Nxa8 {[%emt 0:08:37]} Rxa8 {[%emt 0:02:28]} 20. Bc3 {[%emt 0:01:28]} Qc7 {[%emt 0:12:23]} 21. Qc2 {[%emt 0:01:26]} Nb6 {[%emt 0:03:58]} 22. e5 {[%emt 0:01:31]} dxe5 {[%emt 0:04:09]} 23. Bxe5 {[%emt 0:00:11]} Qc8 {[%emt 0:00:12]} 24. Qxc5 {[%emt 0:00:58]} Bxh3 {[%emt 0:00:56]} 25. Qxc8+ {[%emt 0:01:34]} Bxc8 {[%emt 0:00:19]} 26. Bg2 {[%emt 0:00:33]} Nc4 {[%emt 0:00:32]} 27. Bd4 {[%emt 0:01:58]} Be6 {[%emt 0:00:18]} 28. Rac1 {[%emt 0:00:09]} Nb6 {[%emt 0:01:13]} 29. Nc5 {[%emt 0:01:14]} Bxa2 {[%emt 0:00:20]} 30. b3 {[%emt 0:00:26]} Rd8 {[%emt 0:00:52]} 31. Bxf6 {[%emt 0:00:31]} Bxf6 {[%emt 0:00:29]} 32. Re2 {[%emt 0:00:05]} Bg5 {[%emt 0:01:59]} 33. f4 {[%emt 0:00:05]} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.12"]
[Round "4.16"]
[White "Tsotsonava, Elene"]
[Black "Priehoda, Vitezslav"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "2078"]
[BlackElo "2341"]
[Annotator "ChessBase"]
[PlyCount "38"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 3. Nd2 {[%emt 0:00:06]} h6 {[%emt 0:00:00]} 4. exd5 {[%emt 0:03:20]} exd5 {[%emt 0:00:16]} 5. Ngf3 {[%emt 0:00:20]} Bd6 {[%emt 0:06:29]} 6. Bd3 {[%emt 0:06:06]} Nc6 {[%emt 0:03:44]} 7. O-O {[%emt 0:02:32]} Nb4 {[%emt 0:03:36]} 8. Qe2+ {[%emt 0:11:12]} Ne7 {[%emt 0:06:02]} 9. c4 {[%emt 0:00:40]} Nxd3 10. Qxd3 dxc4 11. Nxc4 O-O 12. Nxd6 Qxd6 13. Re1 Be6 14. Ne5 Rad8 15. Be3 Qxe5 16. Qa3 Qd6 17. Qxa7 Bd5 18. Qa4 Qg6 19. g3 Qe4 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.1"]
[White "Quesada Vera, Liordis"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "0-1"]
[ECO "B95"]
[WhiteElo "2386"]
[BlackElo "2491"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,94,0,8,0,0,-1,0,0,4,0,5,-8,0,-8,-10,-27,0,0,0,0,0,-25,-31,-27,-39,-35,-35,-22,-8,-27,-25,-27,-26,-25,-26,-26,-28,-28,-24,-27,-27,-30,-29,-33,-16,-22,-21,-23,-12,-44,-37,-68,-39,-40,-40,-171,-171,-171,-171,-174,-174,-223,-181,-223,-223,-223,-223,-216,-216,-216,-216,-216,-216,-216,-216,-856,-854,-5110,-5106]} 1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Bg5 e6 7. Qd2 h6 8. Bxf6 Qxf6 9. O-O-O Nc6 10. Qe3 {B66: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 h6} Qd8 11. f4 Be7 12. Kb1 {The position is equal.} Bd7 13. Nf3 Qa5 14. g4 {[#]} g5 $146 ({Predecessor:} 14... O-O-O 15. h4 Kb8 16. Bh3 g5 17. fxg5 hxg5 18. h5 Ne5 19. Nxe5 Qxe5 20. Rhf1 Be8 21. Qd4 Qxd4 22. Rxd4 Rh6 {0-1 (22) Aryan,C (2242)-Smirnov,A (2463) Golden Sands 2014}) 15. h4 {[%cal Rh4g5]} gxf4 16. Qxf4 Ne5 17. Be2 O-O-O 18. Nxe5 Qxe5 19. Qxf7 Bf6 20. Rxd6 Rhf8 21. Rxd7 $1 Rxf7 22. Rxf7 Rd2 {White should prevent ...Rxe2!} 23. Bd3 Rg2 24. Rf1 Bxh4 25. Rh7 Rf2 26. Rxf2 Bxf2 27. Rxh6 Qg5 28. Rh1 Qxg4 29. Rh8+ Kc7 30. Rh7+ Kc6 {[%mdl 1024] [#] ( -> ...Qg1+). Black has compensation.} (30... Kb8 {keeps more tension.} 31. Ne2 Qg6 32. Rh1 Ka7 33. a3 b5) 31. a4 Bd4 32. Ne2 Be5 33. Ka2 Qg5 34. Nc3 Qd2 35. Kb3 Qe3 {aiming for ...Qb6+.} 36. Re7 (36. Bc4 $15) 36... Qb6+ $19 37. Ka2 Kd6 38. Rh7 Qb4 39. Nd1 Qxa4+ 40. Kb1 Qd4 41. Rf7 b5 42. Rf3 {[#]} b4 {Played: Qd4-g1} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.2"]
[White "Stankovic, Milos"]
[Black "Strebkovs, Andrejs"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "2466"]
[BlackElo "2278"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,91,21,17,23,20,28,27,47,30,25,0,27,23,22,11,20,11,31,0,17,0,34,-61,-17,-34,-17,-28,-28,-27,0,-28,0,-32,20,-23,14,20,27,18,31,0,35,0,100,92,73,79,81,89,104,117,100,107,179,125,114,86,166,181,176,133,130,132,131,126,160,139,146,122,352,347,274,210,216,137,1823,1618]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nc3 Nxe5 7. dxe5 Nxc3 8. bxc3 Be7 9. O-O O-O {C43: Petroff Defence: 3 d4} 10. f4 f5 11. Be3 Be6 {White has an edge.} (11... c5 12. Be2 Be6 13. Bf3 Qd7 14. a4 Rad8 15. Qe2 Qc7 16. Rfb1 b6 17. Rd1 {1-0 (43) Carlsen,M (2876)-Shirov,A (2664) Douglas 2019}) 12. Rb1 $146 ({Predecessor:} 12. a4 Qd7 13. Qf3 Rfd8 14. Rfd1 c5 15. Kh1 g6 16. h3 Qc7 17. Qf2 {1-0 (60) Vitiugov,N (2732)-So,W (2767) Khanty-Mansiysk 2019}) 12... b6 13. Qf3 c5 14. Rfd1 Qc7 15. Bf2 Rad8 16. h4 d4 (16... c4 $5 {[%cal Rc4d3]} 17. Bf1 Qc6 $11) 17. c4 Qd7 18. Rb5 Qc8 19. h5 (19. a4 $14) 19... Bd7 20. Rb3 Bc6 21. Qh3 Qe6 22. Re1 Rb8 23. Rbb1 Bd7 24. Rbd1 a6 (24... Qh6 $15) 25. Bf1 (25. c3 $5) 25... b5 26. c3 dxc3 27. Qxc3 b4 28. Qf3 Ba4 29. Qd5 (29. Rd5 {with more complications.} Rbc8 30. g3 Bc6 31. Red1 a5 32. Bg2) 29... Rb6 (29... Kf7 $1 $11) 30. Qxe6+ Rxe6 31. Rd5 $36 {[%mdl 2048] White is really pushing.} Bc6 32. g3 Rh6 33. Bxc5 Bxd5 34. Bxe7 Bf3 {[#]} (34... Bf7 $16 {was worth a try.}) 35. Bxf8 ({Inferior is} 35. Bxb4 Rb8 $11) ({White should play} 35. c5 $1 $18 {aiming for Bc4+.} Re8 36. Bc4+ Kh8 37. Bd6) 35... Kxf8 $18 {[%mdl 4096] Endgame KRB-KRB} 36. c5 {[%cal Bc4c5,Bc5c6][%mdl 32]} Bxh5 {[#]} (36... Rxh5 $16 {was necessary.} 37. Bxa6 Bd5) 37. Bg2 $1 {Strongly threatening c6.} Be8 38. e6 {Black must now prevent e7+.} Ke7 39. c6 {c7 is the strong threat.} Kd6 40. e7 Kc7 41. Re5 Rd6 42. Bd5 a5 $2 (42... g6 $16) 43. Rxf5 Rf6 44. Re5 a4 45. Bf3 Kb6 $2 {[%mdl 8192] [#]} (45... Rf7 $16 46. Bd5 Rf6) 46. Rb5+ $1 {[%mdl 576] Promotion. Accuracy: White = 57%, Black = 24%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.3"]
[White "Vokac, Marek"]
[Black "Cernousek, Lukas"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "2334"]
[BlackElo "2447"]
[Annotator "TA"]
[PlyCount "30"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,30,0,0,0,0,0,0,15,11,17,12,31,0,4,13,56]} 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. e4 e6 6. Nge2 Nge7 7. d3 O-O 8. O-O d6 9. a3 b6 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} (9... Nd4 10. Rb1 b6 11. e5 Nxe2+ 12. Qxe2 Rb8 13. exd6 Nf5 14. Be3 Nxe3 15. fxe3 Qxd6 16. Ne4 Qe7 17. b4 Bb7 18. b5 {½-½ (56) Maghsoodloo,P (2656)-Santos Latasa,J (2594) Leon 2019}) 10. b4 Bb7 11. b5 $146 ({Predecessor:} 11. Rb1 Rb8 12. Bf4 Nd4 13. Nxd4 cxd4 14. Ne2 Qd7 15. b5 f5 16. f3 Ra8 17. Qb3 Kh8 18. Bc1 fxe4 19. fxe4 Rxf1+ 20. Bxf1 {1-0 (49) Musalov,R (2371)-Golubov,S (2227) Taganrog 2013}) 11... Nd4 12. Nxd4 Bxd4 13. Qb3 Bg7 14. Ra2 Qd7 15. a4 Rad8 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.4"]
[White "Sharma Isha"]
[Black "Liu, Zhaoqi"]
[Result "1/2-1/2"]
[ECO "C03"]
[WhiteElo "2169"]
[BlackElo "2328"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,88,12,5,-33,-19,-19,-21,-122,-127,-128,-116,-125,-120,-104,-77,-66,-58,-56,-68,-68,-30,-44,-40,-46,-45,-54,-32,-41,-12,-34,-23,-34,-28,-65,-66,-109,-98,-68,-40,-63,-33,-163,-174,-164,-160,-159,-162,-181,-177,-177,-162,-156,-68,-62,-13,-23,-15,-23,-8,-8,-5,-5,-2,-107,0,0,0,-21,0,8,16]} 1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Ngf3 Nf6 5. Bd3 c5 6. e5 Nfd7 7. c3 a5 8. O-O Nc6 9. Re1 cxd4 10. cxd4 Qb6 11. Qa4 {C06: French Tarrasch: 3...Nf6 4 e5 Nfd7 5 Bd3 main lines} (11. a4 Nxd4 12. Nxd4 Qxd4 13. Nf3 Qb6 14. Be3 Nc5 15. Bb5+ Bd7 16. Nd4 Bxb5 17. Nxb5 O-O 18. Qg4 Rfc8 {0-1 (33) Naroditsky,D (2631)-So,W (2779) ICC INT 2015}) 11... g5 12. h3 h5 13. Nb3 (13. g4 $1 $11 {remains equal.}) 13... g4 $17 14. hxg4 $146 ({Predecessor:} 14. Ng5 Qc7 15. Nc5 Bxc5 16. dxc5 Nxc5 17. Qd1 Nxd3 18. Qxd3 Nb4 {0-1 (39) Pielmeier,T (2181)-Kraemer,E (2121) Germany 2012}) 14... hxg4 15. Nh2 g3 16. Nf3 Nb4 17. Bb1 Qa6 {[#] Strongly threatening ...gxf2+.} 18. Nbd2 gxf2+ 19. Kxf2 Nd3+ 20. Bxd3 $1 Qxd3 21. Nf1 b5 22. Qd1 Qxd1 23. Rxd1 Nb6 24. Bf4 Ba6 25. Rac1 Kd7 26. Rc2 Rac8 $36 {[%mdl 2048] Black has good play.} 27. Rdc1 Rxc2+ 28. Rxc2 Rg8 29. Ne3 b4 30. Nd2 (30. Nf5 $1 $15 Bd8 31. Nh6) 30... Bd3 31. Rc1 a4 32. Kf3 Bg6 33. g4 Nc8 34. Ng2 {[#]} Na7 $1 35. Be3 Nc6 (35... Rc8 $17 36. Rxc8 Kxc8) 36. Nf4 $15 Bd8 37. Nxg6 Rxg6 38. Kg3 f5 39. exf6 $1 Bxf6 40. Nf3 e5 {[%cal Rc6d4]} 41. Rd1 (41. g5 $11) 41... exd4 (41... e4 $17 42. Nh4 Bxh4+ 43. Kxh4 Rf6) 42. Bf4 $11 {The position is equal.} Rg8 43. g5 Ne7 44. Kg4 Bg7 {Accuracy: White = 50%, Black = 45%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.5"]
[White "Kakushadze, Ilia"]
[Black "Budnikov, Oleg"]
[Result "0-1"]
[ECO "C05"]
[WhiteElo "2149"]
[BlackElo "2432"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,92,53,54,39,46,27,83,72,120,47,104,5,4,4,6,25,12,9,0,-86,39,36,58,49,90,42,37,-54,-54,-88,-95,-129,-130,-126,-107,-146,-121,-191,-192,-191,-196,-178,-180,-168,-120,-130,-60,-59,-62,-763,-763,-754,-728,-707,-688,-854,-507,-807,-813,-818,-837,-806,-803,-748,-680,-809,-176,-940,-921,-29976,-29977,-29977,-29978,-6705,-3083,-29990,-1508,-29988,-29989]} 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ngf3 f6 8. exf6 Qxf6 {[%cal Rc5d4]} 9. O-O {C06: French Tarrasch: 3...Nf6 4 e5 Nfd7 5 Bd3 main lines} Bd6 10. Re1 h6 (10... cxd4 $11 11. cxd4 O-O) 11. Qe2 $16 {White is better.} Kf7 $146 ({Predecessor:} 11... Nb6 12. dxc5 Bxc5 13. a4 a5 14. Nb3 Bd6 15. Qe3 Bc7 16. Nbd4 Nxd4 17. Nxd4 {1-0 (49) Anurag,M (2490)-Girinath,P (2330) Majitar 2019}) 12. Nh4 (12. Nf1 $16) 12... Nf8 (12... cxd4 $14 13. Bg6+ Ke7) 13. Ndf3 (13. dxc5 $16 Bxc5 14. Nhf3) 13... cxd4 $11 14. cxd4 Kg8 15. g3 $1 Bd7 16. Ng2 Be8 17. Bf4 {[#]} (17. Qe3 $11 {remains equal.}) 17... Bb4 (17... Bxf4 $1 $17 18. gxf4 (18. Nxf4 $2 g5 $19) 18... Bh5) 18. Be5 $1 $14 {[%cal Re5f6]} Qe7 19. Rec1 Ng6 20. a3 {aiming for Bxg6.} Ngxe5 21. Nxe5 (21. dxe5 $14 Bc5 22. Bb5) 21... Nxd4 $15 22. Qg4 Bc5 23. Nf4 h5 24. Qd1 {Hoping for Neg6.} Rh6 25. Rc3 Bb6 {Threatens to win with ...g5.} 26. Rac1 (26. Qd2 $17) 26... Nc6 $19 27. Nxc6 bxc6 28. Rxc6 Bxc6 29. Rxc6 Rf8 {...Bxf2+! is the strong threat.} 30. Ng6 Rxg6 ({Don't do} 30... Bxf2+ 31. Kg2 $15) ({Better is} 30... Qf6 $17 31. Nxf8 Qxf2+ 32. Kh1 Kxf8) 31. Bxg6 $15 Qf6 {[%mdl 64] Double Attack} ({Much weaker is} 31... Bxf2+ $6 32. Kg2 $14) 32. Qc2 $2 {[%mdl 8192]} (32. Bxh5 $15 Qxf2+ 33. Kh1) 32... Bxf2+ $19 33. Kg2 Qf3+ 34. Kh3 Bd4 35. Qd3 Qg4+ 36. Kg2 e5 37. Rc2 h4 38. h3 Qg5 {And now ...e4 would win.} 39. g4 Qf4 {( -> ...e4)} 40. Bf5 {[#]} Kh8 $2 (40... g6 $1 {[%mdl 512]} 41. Qf3 (41. Bxg6 e4) 41... Qxf3+ 42. Kxf3 gxf5 43. gxf5 Rxf5+ 44. Kg4 Rf4+ 45. Kg5 Kf7) 41. a4 $2 {[#]} (41. Qf3) 41... g6 $1 {[%mdl 512]} 42. Bxg6 Be3 43. Bf5 Qg3+ 44. Kf1 e4 45. Qa6 Qg1+ 46. Ke2 d4 {Accuracy: White = 32%, Black = 52%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.6"]
[White "Low, Zhen Yu Cyrus"]
[Black "Riha, Vojtech"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2415"]
[BlackElo "2247"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,129,18,45,16,22,18,22,21,39,12,14,14,10,19,81,30,77,61,70,50,83,72,91,93,95,86,83,80,98,104,109,96,98,100,186,116,144,83,80,84,128,96,148,143,131,118,156,178,250,258,271,273,277,275,405,325,411,390,465,364,340,350,333,245,353,324,322,322,368,350,374,359,408,417,481,479,542,536,529,459,548,516,582,571,576,579,614,593,612,599,642,622,602,601,718,739,702,712,756,754,756,731,804,805,782,762,662,639,692,682,1231,1202,29982,29982,29984,29985,29985,29986,29986,29987,29989,29990]} 1. e4 c5 2. Nc3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 e5 6. Be3 {B23: Closed Sicilian: Lines without g3} Qe7 7. Qd2 Nf6 8. h3 {The position is equal.} Be6 9. b3 $146 ({Predecessor:} 9. Nge2 c4 10. f4 cxd3 11. cxd3 exf4 12. Nxf4 Bg7 13. O-O O-O-O 14. Rad1 c5 15. Rf3 b6 {½-½ (15) Tissir,M (2439)-Mecking,H (2554) Lodi 2006}) 9... h6 10. Nge2 Bg7 11. O-O g5 (11... Nh5 $11) 12. a3 (12. Ng3 $16) 12... O-O 13. Ng3 Rfd8 14. Qe2 b6 15. Bd2 Qd7 16. Nd1 Ne8 17. Bc3 Nd6 18. a4 a5 19. Ne3 f6 20. Kh2 Ra7 21. Nh5 Qf7 (21... Rf8 $16) 22. Qf3 (22. g3 $1 $18) 22... Qg6 23. Ng3 (23. Rh1 $142) 23... Rf7 $16 24. Rab1 Kh7 25. Nc4 g4 {[#]} (25... Rb7 $142) 26. Qe2 $1 h5 27. h4 ({Don't take} 27. Nxb6 $6 h4 $11) 27... Nc8 {[#]} 28. f4 $1 {[%cal Rf4f5] Strongly threatening f5.} exf4 (28... gxf3 $142 29. Qxf3 Rh8) 29. Rxf4 $18 Bh6 30. Rf2 Rdf8 31. Rbf1 Bg7 (31... Kh8 {was worth a try.} 32. Ne3 Ne7) 32. Ne3 Bh6 33. Nef5 Bg7 34. Qe3 Bh8 35. Ne2 Bxf5 36. exf5 Qh6 (36... Qg8 {keeps fighting.} 37. Qe6 Rc7) 37. Qxh6+ Kxh6 38. Ng3 Re8 39. Bd2+ Kh7 40. Nxh5 Nd6 41. Kg3 Bg7 42. Kxg4 Bh6 {and the idea ...Bxd2 leaves Black hopeful.} 43. Bc3 Bg7 44. g3 Re3 45. Bd2 Re5 46. Kh3 b5 47. g4 c4 48. bxc4 bxc4 49. Bc3 Re3+ 50. Rf3 Re2 51. R1f2 cxd3 52. cxd3 Rxf2 53. Rxf2 Re7 54. Bxf6 Re3+ 55. Kg2 Bxf6 56. Nxf6+ {[%mdl 4096] Endgame KRN-KRN} Kg7 57. Nh5+ Kf7 58. Rf3 Re2+ 59. Kg3 Ra2 60. g5 Rxa4 61. g6+ {White mates.} Kf8 62. f6 Ra1 63. Kh2 Ra4 64. Kh3 Rd4 65. f7 {Accuracy: White = 72%, Black = 28%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.7"]
[White "Kristiansen, Willy M"]
[Black "Lalic, Bogdan"]
[Result "0-1"]
[ECO "A62"]
[WhiteElo "2137"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,54,18,0,41,0,30,18,18,18,22,17,50,16,10,-8,-10,-19,-19,-22,-29,-116,-126,-131,-139,-128,-128,-244,-247,-523,-520,-608,-599,-975,-851,-1012,-924,-1310,-1232]} 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Bf4 h6 {A62: Modern Benoni: Fianchetto Variation without early ...Nbd7} 11. a4 $146 ({Predecessor:} 11. Qc1 g5 12. Bd2 Bf5 13. h4 g4 14. Ne1 Kh7 15. Nc2 Nbd7 16. Ne3 Bg6 17. h5 Nxh5 18. Nxg4 {0-1 (29) Gleizerov,E (2498)-Navara,D (2734) Riga 2019}) 11... g5 12. Bd2 Bf5 {The position is equal.} 13. h4 g4 14. Nh2 Nbd7 15. Re1 (15. e4 $5 Bxe4 16. Nxe4 Nxe4 17. Nxg4 $14) 15... Ne5 16. e4 Bg6 17. Bf4 h5 18. Bxe5 Rxe5 19. f4 {[#]} (19. Nf1 $11 {keeps the balance.}) 19... gxf3 $1 $17 20. Nxf3 Rxe4 21. Nxe4 Nxe4 {[%mdl 64] Discovered Attack} 22. Ne5 (22. Rxe4 $17 Bxe4 23. Nd2) 22... Nxg3 $19 ({Weaker is} 22... Bxe5 23. Bxe4 Bxg3 24. Bxg6 $17) 23. Nxg6 $2 (23. Nf3) 23... fxg6 {Black is clearly winning.} 24. Ra3 Qxh4 25. Bf3 Rf8 {...Bd4+ is the strong threat.} 26. Kg2 Qg5 {[#] Threatens to win with ...Ne4+.} 27. Kh3 Rf4 {Accuracy: White =  7%, Black = 70%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.8"]
[White "Peng, Hongchi"]
[Black "Balinski, Damian"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "2362"]
[BlackElo "2139"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,57,22,42,37,37,29,33,27,45,60,62,40,54,50,65,60,70,61,163,153,148,140,179,123,220,219,217,219,375,229,272,223,401,233,2325,2250,29992,29993]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Bd3 O-O 6. Nf3 Nc6 7. e5 dxe5 8. dxe5 Nd5 9. Nxd5 Qxd5 10. Qe2 Bg4 11. Be4 Qa5+ 12. Bd2 {B09: Pirc Defence: Austrian Attack} Qb6 13. O-O-O (13. Bc3 Rad8 14. h3 Bxf3 15. Qxf3 Nd4 16. Qg3 f6 17. Bd3 fxe5 18. O-O-O exf4 19. Qg4 Qc5 {0-1 (31) Firouzja,A (2723)-Duda,J (2758) Moscow 2019}) 13... Nd4 14. Qe1 {[#] White is slightly better.} a5 $146 ({Predecessor:} 14... Nxf3 15. gxf3 Be6 16. h4 f5 17. exf6 Bxf6 18. Bc3 Rad8 19. Rxd8 Rxd8 20. Bxf6 exf6 {½-½ (33) Peng,H (2347)-Karthik,V (2505) Qinhuangdao 2019}) 15. Be3 c5 16. Qf2 {[%cal Re3d4]} Rad8 17. c3 $36 {[%mdl 2048] White is pushing.} Nxf3 18. gxf3 Be6 19. Bxc5 Qb5 (19... Rxd1+ $14 20. Rxd1 Qc7) 20. Bxe7 $18 Rxd1+ 21. Rxd1 Rc8 22. Bb1 (22. a3 $18) 22... Qe8 (22... Bh6 $16) 23. Bf6 Bxf6 24. exf6 Qb5 $2 {[#]} (24... a4 25. f5 Bc4) 25. Qd4 h5 26. Re1 Qc4 $2 (26... Qd7 27. Qxd7 Bxd7) 27. Qe3 (27. Qd2 $142 {Threatens to win with f5!} Qd5 28. Qg2) 27... Rc5 $2 {[#]} (27... Qc5 28. Qe5 Qxe5 29. Rxe5 b6) 28. f5 $1 Bxf5 29. Qh6 {Accuracy: White = 63%, Black = 16%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.9"]
[White "Malovanyi, Yulian"]
[Black "Kvaloy, Aksel Bu"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2360"]
[BlackElo "2132"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,104,7,19,-6,21,-16,-19,-7,-15,-17,0,-11,2,10,23,17,28,31,31,31,28,0,0,-18,-10,-24,-23,-42,-31,-32,-31,-46,-55,-45,-53,-71,-60,-62,-74,-88,-73,-59,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-59,0,-89,-89,-125,-125,-125,-125,-150,-150,-150,-150,-150,-150,-150,-149,-143,-141,-139,-125,-125,-125,-125,-89,-125,-125,-141,-51,-106,-106,-106,-106,-98,-98,-98,0]} 1. e4 c5 2. Nc3 d6 3. Nge2 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O Rb8 7. a4 {B24: Closed Sicilian: 3 g3 sidelines} a6 (7... e5 8. f4 Nge7 9. d3 O-O 10. Be3 Be6 11. fxe5 Nxe5 12. h3 Qd7 13. Nf4 N5c6 14. Kh2 {0-1 (39) Kowalczyk,P (2387)-Heberla,B (2555) Bialystok 2017}) 8. f4 e6 9. d3 {The position is equal.} Nge7 10. Be3 Nd4 11. Bf2 Nec6 12. Nxd4 Nxd4 13. Nb1 $146 {[%cal Bc3b1,Bb1d2,Bd2c4][%mdl 32]} ({Predecessor:} 13. Qd2 O-O 14. Nd1 f5 15. Ne3 b6 16. Ra3 {0-1 (47) Valenta,V (2040)-Bukojemski,A (2235) Olomouc 2016}) 13... O-O 14. c3 Nc6 15. Nd2 b6 16. e5 Bb7 17. exd6 Qxd6 18. Nc4 Qc7 19. Qc2 Ne7 20. Bxb7 Rxb7 21. a5 b5 22. Nd2 Qc8 23. Ne4 {[#] And now Nd6 would win.} Rc7 24. Rfd1 Rd8 25. Rd2 Nf5 26. Rad1 Nd6 (26... h5 $15) 27. Nxd6 $1 $11 Rxd6 28. d4 cxd4 29. Bxd4 Bxd4+ 30. Rxd4 Rxd4 31. Rxd4 {[%mdl 4096] Endgame KQR-KQR} Rd7 32. Qf2 Qd8 33. Rxd7 Qxd7 {KQ-KQ} 34. h4 Qd1+ 35. Kh2 (35. Qf1 $1 $11 Qb3 36. Qb1) 35... h5 (35... Qa1 $15) 36. Kg2 (36. b4 $11) 36... Qa1 $17 37. Qd2 Qxa5 38. b4 Qc7 39. Kh2 a5 40. bxa5 Qxa5 41. Kg1 Qa7+ 42. Kh2 Qc5 43. Qd8+ Kg7 44. Qd2 Qb6 45. Qb2 Kh7 46. Qd2 Qc5 47. Qe1 Kg8 48. Qd2 e5 (48... Kg7 $17 49. Qe1 Kf6) 49. fxe5 (49. f5 $1 $15) 49... Qxe5 {Black is better.} 50. Qd8+ Kh7 51. Qd2 Kg7 52. Kg2 Kh7 {Accuracy: White = 38%, Black = 54%.} ({Black should try} 52... Qe4+ $17 53. Kf2 Qf5+ 54. Ke3 Qc5+ 55. Kf3 Qc4) 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.10"]
[White "Vignesh B"]
[Black "Mis, Mieszko"]
[Result "1-0"]
[ECO "B49"]
[WhiteElo "1912"]
[BlackElo "2349"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,107,27,36,31,54,38,50,51,55,56,38,37,141,156,149,143,143,136,143,141,127,103,152,144,147,147,144,128,149,140,122,123,144,151,152,151,150,127,188,219,211,181,208,212,230,209,224,220,197,198,421,424,348,199,222,138,1353,1498,1550,1565,1523,1369,5169,4421,1786,1562,29960,29962,29960,29960,29958,29958,6111,6111,6101,6087,29966,29966,29968,29968,29968,29968,29980,29979,29973,5708]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. Be3 Nf6 8. O-O Be7 9. f4 d6 10. a4 O-O 11. Kh1 Bd7 12. Nb3 Nb4 13. a5 {B85: Sicilian Scheveningen: 6 Be2 a6, lines with early Be3} d5 (13... Rac8 14. Bf3 Bc6 15. Nd4 d5 16. Nxc6 Qxc6 17. exd5 exd5 18. Bb6 Bd8 19. Bd4 Ne4 20. Ra3 f5 21. g4 Qh6 22. Kg2 fxg4 23. Bxg4 {1-0 (38) Darini,P (2492)-Mousavi,S (2480) Ahvaz 2018}) 14. Bb6 Qc8 15. e5 {White is slightly better.} Ne4 16. Nxe4 dxe4 17. c4 Qe8 $146 (17... f6 $14) ({Predecessor:} 17... Re8 18. Qd2 Bc6 19. Rfd1 g6 {1-0 (51) Somborski,N (2352)-Kostic,B (2306) Banja Junakovic 2007}) 18. Nc5 $1 $16 {[%cal Rc5d7]} Bc6 19. Qb3 Nd3 20. Nxd3 exd3 21. Qxd3 Bd8 22. Bg1 Bc7 23. Bf3 Rd8 24. Qa3 {aiming for Bc5.} f6 25. Bc5 Rf7 26. Bd6 Bxf3 27. Rxf3 fxe5 28. fxe5 Rdd7 29. Raf1 Rxf3 30. Qxf3 {White wants to mate with Qf8+.} Bxd6 (30... g6 $16 {was called for.}) 31. exd6 $18 Rxd6 32. Qxb7 $16 {[%mdl 4096] Endgame KQR-KQR} e5 33. c5 Rc6 34. Qb3+ $40 {[%mdl 128] White has strong attack.} Qe6 35. Qxe6+ Rxe6 $18 {KR-KR} 36. Kg1 Re8 $2 (36... Re7 37. Rf5 h6) 37. Rd1 Rb8 38. c6 (38. Rd7 $142 {Black must now prevent c6.} h5 39. c6) 38... Rc8 39. Rc1 {b4 is the strong threat.} Rc7 $2 {[%mdl 8192]} (39... Kf7 $16) 40. b4 $1 {[%cal Bb2b4,Bb4b5][%mdl 32]} Kf7 {[#]} 41. b5 $1 {[%mdl 512]} axb5 {[#]} 42. a6 $1 {[%cal Ra6a7]} Ke6 {[#]} 43. a7 $1 {[%cal Ra7a8][%mdl 512]} Rc8 (43... Rxa7 44. c7) 44. c7 b4 {[#]} 45. Rb1 {Played: a7-a8Q} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.11"]
[White "Priehoda, Vitezslav"]
[Black "Hajiyev, Kanan"]
[Result "1/2-1/2"]
[ECO "D96"]
[WhiteElo "2341"]
[BlackElo "1996"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,59,25,59,57,68,14,14,17,18,14,22,16,29,0,0,0,0,0,0,-5,-5,-18,-25,-17,-17,-17,-17,-21,-18,-57,-41,-32,3,0,0,-26,0,-487,8,0,0,7,28,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 g6 5. cxd5 cxd5 6. Bf4 Bg7 7. e3 O-O 8. Bd3 Nc6 9. h3 Qb6 10. a3 {D90: Grünfeld: 4 Nf3 Bg7 sidelines} Bf5 11. O-O (11. Bxf5 $14 gxf5 12. Qe2) 11... Bxd3 $11 12. Qxd3 {The position is equal.} Rfc8 13. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} e6 $146 ({Predecessor:} 13... Qd8 14. Rac1 e6 15. Nd2 Ne8 16. Qb5 b6 17. Qa6 e5 18. dxe5 {1-0 (54) Nabaty,T (2636)-Mammadov,Z (2422) Ordu 2017}) 14. Rfc1 Qd8 15. Nd2 Nd7 16. Nb3 Nb6 17. b5 Ne7 {[%cal Bc6e7,Be7f5,Bf5d4,Bd4e2][%mdl 32]} 18. Nc5 e5 $1 {[%cal Re5f4]} 19. Bh2 exd4 20. exd4 Nf5 21. Nxb7 Qe7 $36 {[%mdl 2048] Black is pushing.} 22. Na5 Nxd4 {Hoping for ...Rxc3!} 23. Kh1 Rxc3 {[%mdl 64] [#] Decoy} 24. Qxc3 Ne2 {[%mdl 64] Pin} 25. Qe1 Re8 26. Nc6 Qd7 (26... Qe6 $5 {[%cal Rg7a1]} 27. Qa5 Bxa1 28. Rxa1 Nc4 29. Qxa7 Qf6 $11) 27. Rc2 $2 {[%mdl 8192] [#]} (27. Qb4 $11 {and White has nothing to worry.}) 27... Bxa1 $2 ({Black should try} 27... Nd4 $19 28. Nxd4 Rxe1+ 29. Rxe1 Bxd4) 28. Rxe2 Rxe2 29. Qxe2 Bf6 30. Qd3 {Accuracy: White = 41%, Black = 59%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.12"]
[White "Pushkov, Nikolai"]
[Black "Domogaev, Sergey"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2239"]
[BlackElo "2334"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,22,5,35]} 1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. Nc3 Be7 5. Bg5 Nbd7 6. e3 h6 7. Bh4 O-O 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Bd3 c5 {Predecessor:} 12. dxc5 $146 Nxc5 13. O-O Bg4 14. Be2 Rfd8 15. Nd4 Bxe2 16. Qxe2 Rac8 17. Rfd1 Ne6 18. Nxe6 fxe6 19. Rac1 a6 {0-1 (62) Assaubayeva,B (2372)-Murashova,E (2259) St Petersburg 2018} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.13"]
[White "Ludvik, Tomas"]
[Black "Wang, Yukun"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2272"]
[BlackElo "1990"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,146,-14,-21,0,0,0,0,11,0,0,0,0,0,0,0,8,0,6,4,8,3,3,8,4,3,15,7,24,11,23,0,26,22,25,19,22,21,61,30,60,16,18,0,0,-8,-11,-12,-13,-14,63,0,75,-16,-20,-204,-196,-205,-209,-201,-91,-348,-332,-343,-339,-364,-280,-301,-317,-347,-234,-245,-221,-220,-170,-219,-235,-233,-230,-293,-294,-429,-429,-424,-291,-698,-698,-770,-765,-29961,-29969,-29971,-29972,-29961,-1100,-804,-646,-581,-104,-104,-105,-12813,-5972,-5097,-2417,-29981,-29982,-29982,-29983,-29983,-29983,-29979,-29980,-29990,-29991,-29992,-29992,-29993,-29992,-29992,-29993,-29996,-29997]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 dxc4 8. Bxc4 O-O 9. O-O Qe7 10. Rd1 e5 11. h3 e4 12. Ng5 Nb6 13. Bb3 Bf5 14. f3 $1 {[%cal Rg5e4]} Rae8 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} (14... Nbd5 {is interesting.} 15. Ncxe4 Nxe4 16. Nxe4 Rae8 17. Rf1 Bxe4 18. fxe4 Qxe4 19. Qxe4 Rxe4 20. Rf3 f5) 15. Ngxe4 Nxe4 16. fxe4 Bxe4 {The position is equal.} 17. Nxe4 Qxe4 18. Qxe4 Rxe4 19. Bc2 {[#]} Re6 $146 ({Predecessor:} 19... Re7 20. e4 Rfe8 21. a4 Rxe4 22. Bxe4 Rxe4 {1-0 (66) Onischuk,A (2670)-Adly,A (2591) Bursa 2010}) 20. e4 Rd8 21. e5 Be7 22. Be3 g6 23. Bb3 Nd5 24. Bf2 f6 25. Re1 Bb4 26. Re4 Rd7 27. Rd1 Ba5 28. Bh4 {With the idea Bxf6.} f5 29. Re2 Bb6 30. Kh1 Kg7 31. Bf6+ Kf7 32. Bg5 Bd8 33. Bxd8 (33. Bc1 {is more complex.} Bb6 34. g4 a6 35. Kg2 Kg7 36. Rf2) 33... Rxd8 34. Rf1 Kg7 35. Ref2 Re7 36. g4 fxg4 37. hxg4 Rdd7 (37... g5 $11) 38. Rf3 (38. g5 $14) 38... g5 {[#]} (38... a5 $11) 39. Rf5 (39. Rf8 $1 $16) 39... h6 $11 40. R1f3 $2 (40. R1f2 $11 {and White is okay.}) 40... Nf4 $19 41. Re3 {intending Re4.} Rxd4 42. e6 Ng6 (42... Rd3 $19 43. Rxd3 Nxd3) 43. Rf7+ $2 {[%mdl 8192]} (43. Ref3 $17 {was the only defense.} Nf4 44. Re3) 43... Rxf7 44. exf7 Rxg4 {[%mdl 4096] Endgame KRB-KRN} 45. a3 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 46. Re8 {Hoping for Rg8+.} Nf8 47. Rb8 b5 48. Rb6 Re4 49. Rxc6 Re2 50. Rb6 {[#]} a4 $1 {[%cal Ra4b3]} 51. Bd5 Rxb2 52. Bc4 Rc2 ({Stronger than} 52... bxc4 53. Rxb2 Ng6 54. Rb7 $16) 53. Bxb5 (53. Bd5 {is a better defense.}) 53... Rb2 54. Rb7 {[#]} Ne6 {Played: Nf8-d7} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.14"]
[White "Koubova, Anna Marie"]
[Black "Czerw, Dawid"]
[Result "1/2-1/2"]
[ECO "D43"]
[WhiteElo "1930"]
[BlackElo "2262"]
[Annotator "RC"]
[PlyCount "60"]
[EventDate "2020.01.10"]
[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 0:00:07]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:03]} 3. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:07]} 4. Nc3 {[%emt 0:00:24]} c6 {[%emt 0:00:05]} 5. cxd5 {[%emt 0:00:09]} exd5 {[%emt 0:00:05]} 6. Bg5 {[%emt 0:00:09]} Nbd7 {[%emt 0:00:04]} 7. e3 {[%emt 0:00:16]} Qa5 {[%emt 0:00:16]} 8. Nd2 {[%emt 0:08:49]} Bb4 {[%emt 0:01:41]} 9. Qc2 {[%emt 0:01:07]} O-O {[%emt 0:01:34]} 10. Bd3 {[%emt 0:01:03]} Ne4 {[%emt 0:10:47]} 11. Bxe4 {[%emt 0:14:55]} dxe4 {[%emt 0:03:08]} 12. Bf4 {[%emt 0:00:11]} Nf6 {[%emt 0:21:32]} 13. O-O {[%emt 0:05:07]} Bxc3 {[%emt 0:11:39]} 14. bxc3 {[%emt 0:05:09]} Nd5 {[%emt 0:06:28]} 15. Nxe4 {[%emt 0:24:38]} f5 {[%emt 0:06:12]} 16. Nd6 {[%emt 0:01:35]} Qxc3 {[%emt 0:01:34]} 17. Qxc3 {[%emt 0:02:11]} Nxc3 {[%emt 0:00:03]} 18. Be5 {[%emt 0:01:14]} b6 {[%emt 0:02:11]} 19. f3 {[%emt 0:04:05]} Be6 {[%emt 0:02:44]} 20. Rf2 {[%emt 0:00:16]} Nd5 {[%emt 0:02:21]} 21. Re2 {[%emt 0:03:33]} Ne7 {[%emt 0:02:20]} 22. Rc1 {[%emt 0:01:24]} Rfd8 {[%emt 0:01:55]} 23. e4 {[%emt 0:01:59]} fxe4 {[%emt 0:01:32]} 24. fxe4 {[%emt 0:00:10]} Rd7 {[%emt 0:00:47]} 25. Rf2 {[%emt 0:11:25]} Rad8 {[%emt 0:04:52]} 26. Nf5 {[%emt 0:01:45]} Bxf5 {[%emt 0:04:45]} 27. exf5 {[%emt 0:00:07]} c5 {[%emt 0:02:00]} 28. dxc5 {[%emt 0:03:32]} Rd1+ {[%emt 0:04:17]} 29. Rf1 {[%emt 0:00:11]} Rxc1 {[%emt 0:02:42]} 30. Rxc1 {[%emt 0:00:06]} Rd5 {[%emt 0:00:05]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.15"]
[White "Smolik, Jachym"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "2025"]
[BlackElo "2380"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,66,-17,-31,-15,-10,-29,-29,-61,-68,-40,-41,-68,-57,-67,-51,-54,-62,-143,-73,-82,-26,-88,-85,-112,-90,-125,-110,-136,-98,-143,-146,-202,-200,-235,-250,-229,-240,-241,-244,-226,-230,-267,-259,-313,-285,-360,-314,-431,-295,-516,-532,-572,-567,-607,-392,-783,-782,-1444,-1434]} 1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. Bg5 Qb6 5. Nbd2 (5. Bxf6 Qxf6 6. c3 Qb6 7. e4 g6 8. a4 b4 9. Nbd2 Bg7 10. a5 Qb7 11. Qc2 O-O 12. Bc4 d6 13. O-O Nd7 14. Rfe1 {0-1 (99) Gelfand,B (2695)-Svidler,P (2760) Moscow 2018}) 5... Nxd5 6. e4 {A43: Schmid Benoni} Nc7 7. Be2 g6 $146 ({Predecessor:} 7... Bb7 8. O-O g6 9. c4 b4 10. a3 Nc6 11. Qc2 Bg7 12. Rab1 Ne6 {0-1 (56) Arias Castanedo,J (2044)-Anguix Garrido,J (2404) Valencia 1999}) 8. O-O {Black has an edge.} Bg7 9. c3 Nc6 10. h4 Ne6 11. Be3 a6 12. Nh2 d6 13. Qc2 {[#]} (13. a4 $15) 13... Bb7 (13... Ncd4 $142 $1 {[%cal Rd4c2][%mdl 512]} 14. Qd1 (14. cxd4 $2 cxd4 15. Bg5 h6 $17) 14... Nxe2+ 15. Qxe2 b4) 14. Bg4 Nf8 (14... Ne5 $17 15. Be2 h5) 15. f4 (15. h5 $11 {remains equal.}) 15... Qc7 $17 16. Bh3 Nd7 17. Rac1 Nf6 18. Rf2 e6 19. Nhf3 Ne7 20. g4 (20. Re1 $17) 20... h5 $19 21. g5 Ng4 22. Re2 d5 {And now ...dxe4 would win.} 23. e5 Nf5 24. Bf2 Bf8 25. b3 Be7 26. Qb1 Kf8 27. Be1 Kg7 28. Nh2 Rad8 29. Bxg4 $2 (29. Nxg4 {might work better.} hxg4 30. Bxg4) 29... hxg4 30. Nxg4 d4 31. Rh2 Qc6 {Threatens to win with ...dxc3.} 32. c4 $2 {[#]} (32. Nf6) 32... Nxh4 $1 {[%mdl 512] aiming for ...Nf3+.} 33. Bxh4 {[#]} Rxh4 $1 {[%mdl 512] Accuracy: White = 10%, Black = 57%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.13"]
[Round "5.16"]
[White "Laxman, R.R."]
[Black "Nahornyi, Ihor"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2441"]
[BlackElo "2074"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,89,8,9,0,17,19,15,16,25,21,35,25,36,33,43,44,50,45,59,35,85,90,146,52,40,52,49,0,0,5,56,56,75,70,30,35,50,20,30,17,10,19,729,728,729,729,708,708,686,650,677,670,654,631,574,356,562,558,1085,590,1141,463,1131,1046,779,732,786,777,802,753,1716,1652,1570,1408,1041,1030]} 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 exd5 7. Bf4 Bd6 8. Bxd6 Qxd6 9. Rc1 {E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7} c6 (9... Qe7 10. g3 O-O 11. Bg2 Nbd7 12. O-O c5 13. e3 a6 14. Nd2 Rfd8 15. Re1 Rac8 16. e4 dxe4 17. Ncxe4 Nxe4 18. Nxe4 Bxe4 19. Bxe4 {1-0 (58) Fedoseev,V (2707)-Bu,X (2712) Danzhou 2018}) 10. e3 O-O 11. Bd3 {The position is equal.} Ba6 $146 ({Predecessor:} 11... Nbd7 12. O-O Rfe8 13. Re1 Re7 14. Ne2 {0-1 (44) Moraes,R (1865)-Fabbri,O (2095) Sao Paulo 2006}) 12. O-O Bxd3 13. Qxd3 Nbd7 14. Rc2 Rfe8 15. Rfc1 a5 16. Na4 {[%cal Bc3a4,Ba4c5,Bc5e4,Be4d6][%mdl 32]} Rec8 17. h3 h6 18. Ne5 {[%cal Re5c6]} b5 ({Black should play} 18... c5) 19. Nxd7 (19. Nxc6 $16 {aiming for Ne7+!} bxa4 20. Ne7+ $1 {[%mdl 576] Discovered Attack} Qxe7 21. Rxc8+ Rxc8 22. Rxc8+ Nf8 23. Qb5) 19... Nxd7 $14 20. Nc5 Nb6 21. e4 dxe4 $1 22. Nxe4 Qd7 ({Black should try} 22... Qg6 $11) 23. Qg3 Qxd4 24. Nd6 Rd8 25. Rxc6 {Hoping for Nf5.} Nc4 $1 {[%cal Rc4d6]} 26. Nxb5 Qxb2 {[%mdl 64] Double Attack} 27. R6xc4 {Black must now prevent Nd6.} Qxb5 28. Rg4 g6 $2 {[%mdl 8192] [#]} (28... Rd3 $11 29. Rxg7+ Kh8) 29. Rxg6+ $1 $18 {[%mdl 576] Demolition} fxg6 30. Qxg6+ {[%mdl 64] Double Attack} Kf8 31. Qf6+ Kg8 32. Rc7 {[%csl Gc7][%cal Rf6g7]} Qb1+ 33. Kh2 {[%csl Gc7][%cal Rf6g7]} Qh7 34. Rxh7 Kxh7 {[%mdl 4096] Endgame KQ-KRR} 35. Qf7+ Kh8 36. Qg6 {White is clearly winning.} Rf8 37. Qxh6+ Kg8 38. Qg6+ Kh8 {[#]} 39. f4 $1 Rae8 (39... Rxf4 40. Qh6+) 40. Qh5+ Kg8 41. Qxa5 Rf7 42. f5 Ref8 43. Qd5 Kg7 44. Qe5+ Kh7 45. g4 {Accuracy: White = 71%, Black = 47%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.1"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Stankovic, Milos"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2491"]
[BlackElo "2466"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,65,8,26,-6,23,8,29,29,36,49,43,40,50,41,52,49,71,64,97,98,92,96,106,94,107,93,97,97,100,104,100,97,97,72,114,112,235,231,302,308,303,290,949,451,1346,868,29973,5911,29973,29974,29997,29998]} 1. c4 g6 2. Nc3 Bg7 3. g3 Nc6 4. Bg2 d6 5. d3 e5 6. e4 Nge7 7. Nge2 O-O 8. O-O a6 9. b3 {A26: English Opening vs King's Indian with ...Nc6 and d3} (9. Nd5 h6 10. Bd2 f5 11. exf5 Bxf5 12. Be3 Qd7 13. Qd2 Kh7 14. Nxe7 Qxe7 15. Nc3 Rae8 16. Rab1 Qd7 {½-½ (111) Kokarev,D (2604)-Sengupta,D (2557) St Petersburg 2018}) 9... Rb8 10. Nd5 $146 ({Predecessor:} 10. Be3 Nd4 11. f3 c6 12. Qd2 b5 13. Rae1 b4 14. Nb1 Nxe2+ 15. Qxe2 c5 16. Rf2 Nc6 {½-½ (49) Kuech,H (2211)-Degenhardt,H (2335) Germany 2001}) 10... Nxd5 11. cxd5 {White has an edge.} Ne7 12. Be3 f5 13. Rc1 c6 14. dxc6 Nxc6 15. Qd2 Be6 16. d4 {Hoping for d5.} f4 17. gxf4 {Threatens to win with d5.} exd4 18. Nxd4 Nxd4 19. Bxd4 Bxd4 20. Qxd4 Rxf4 21. Rfd1 Qg5 {Strongly threatening ...Bh3.} 22. Qxd6 Re8 {aiming for ...Rg4.} 23. Qc5 Qh4 24. f3 Ref8 25. Qe5 Bh3 {[#]} (25... Re8 $16 26. Rd6 (26. Rc7 Rf7 $16) 26... Bf7) 26. Rc7 $1 $40 {[%csl Gc7][%cal Re5g7][%mdl 128] White attacks with force.} (26. Bxh3 Qxh3 27. Qd5+ (27. Rc7 Rg4+ 28. Qg3 Rxg3+ 29. hxg3 Qxg3+ {[%mdl 64] Double Attack} 30. Kh1 Qxf3+ {[%mdl 64] Double Attack} 31. Kh2 Qxd1 32. Rc3 Qd2+ 33. Kh3 Qxc3+ 34. Kg4 Qf3+ {[%mdl 64] Double Attack} 35. Kh4 h6 36. e5 g5#) 27... R8f7 $15) 26... R4f6 27. Bxh3 ({Resist} 27. Rxb7 Qh6 $18) 27... Qxh3 28. Rdd7 {Intending Rg7+ and mate.} ({Not} 28. Qe7 R6f7 $15) 28... Qh6 $2 (28... R6f7 29. Rxf7 {[%mdl 64] Overworked Piece} Rxf7 30. Qe8+ {[%mdl 64] Double Attack} Rf8) 29. Kg2 (29. Qd5+ $142 Kh8 30. Qd2 (30. Rxh7+ Qxh7 31. Rxh7+ Kxh7 $16)) 29... b5 (29... R6f7 $142 30. Rxb7 Qh4 31. Rxf7 Rxf7) 30. Qd5+ {Played: h2-h4} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.2"]
[White "Cernousek, Lukas"]
[Black "Liu, Zhaoqi"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2447"]
[BlackElo "2328"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,146,51,58,31,52,45,39,45,46,48,58,57,56,61,71,62,64,46,62,68,107,87,77,79,89,76,75,76,84,85,109,84,98,83,72,68,132,54,54,54,77,54,61,61,54,54,54,54,54,54,54,54,64,54,77,77,77,54,54,54,54,54,55,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1627,-1525,-1265,-877,-6560,-6713,-807,-808,-6195,-4813,-29948,-29950,-29946,-4134,-29963,-29956,-29956,-29956,-29959,-4353,-29956,0,-29959,-29957,-29961,-29949,-6083,-1377,-29958,-29960,-29942,-575,-570,-555,-29976,-29966,-29966,-29967,-29960,-29959,-12380,-12380]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 g6 4. e4 Bg7 5. d4 cxd4 6. Nxd4 O-O 7. Be3 Nc6 8. Be2 d6 9. O-O Nxd4 10. Bxd4 Bd7 11. Qd3 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0} a5 12. b3 Bc6 13. a3 {White is slightly better.} Nd7 14. Bxg7 Kxg7 15. b4 axb4 16. axb4 b6 {[#]} 17. Qd4+ $146 ({Predecessor:} 17. Nd5 Bxd5 18. cxd5 Rxa1 19. Rxa1 Qc7 20. Qd4+ Nf6 21. Bb5 e5 22. dxe6 fxe6 23. f3 {1-0 (32) Pelletier,Y (2621)-Wirthensohn,H (2404) Switzerland 2005}) 17... Kg8 18. f4 Qc7 19. Rad1 Rad8 20. Nd5 Bxd5 21. cxd5 Rc8 22. Ba6 Ra8 23. Rc1 Qa7 24. Bb5 Rfc8 25. Bc6 (25. Rc6 {with more complications.} Nf6 26. e5 Ne8 27. Qf2 Qd7 28. Qf3) 25... b5 26. Qxa7 Rxa7 27. Ra1 Rcc7 (27... Rxa1 $14 28. Rxa1 Nf6) 28. Ra5 (28. Bxb5 $16 {Bc6 is the strong threat.} Rab7 29. Bxd7 Rxd7 30. Rfb1) 28... Rxa5 $14 29. bxa5 {[%mdl 4096] Endgame KRB-KRN} Nc5 30. Rb1 Ra7 31. Rxb5 Kg7 $1 32. e5 Nd3 33. exd6 exd6 34. g3 Nc5 $1 35. Kf2 Kf6 36. Ke3 Re7+ 37. Kd2 Ra7 38. Kc3 h5 39. Kb4 Na6+ 40. Kc4 {Threatens to win with Rb7.} Nc5 41. h4 (41. Kc3 $14) 41... Ke7 $11 42. Rxc5 dxc5 {KR-KB} 43. Kb5 c4 {Hoping for ...c3.} 44. Kb6 c3 45. Ba4 {[#]} (45. Kxa7 $2 {perishes.} c2 $19) 45... Rd7 $1 {[%mdl 512] And now ...Rd8 would win.} 46. a6 (46. Bxd7 c2) 46... Rxd5 47. a7 Rd8 48. Kc7 Rh8 49. Bc2 Ke6 {aiming for ...Kd5.} 50. Kb7 Kd5 {Strongly threatening ...f5.} 51. f5 gxf5 52. Bxf5 Ke5 53. Bc8 $2 {[%mdl 8192]} (53. Bb1 $11) 53... c2 $19 54. a8=Q c1=Q {( -> ...Qh1+). KQR-KQB} 55. Qb8+ Kf6 56. Qd6+ Kg7 57. Qd4+ f6 58. Be6 Qb1+ 59. Kc6 Qc2+ (59... Rb8 $142 60. Qa7+ Kh6 61. Qe3+ Kg6 62. Bd7 Qb4 63. Qc5 Qb3 64. Bf5+ Kh6 65. Bd7 Qd3 66. Qc1+ Kg7 67. Qc5 Qf3+ 68. Kd6 Qxg3+ 69. Kd5 Qd3+ 70. Ke6 Qh3+ 71. Kd6 Qxh4 72. Qg1+ Qg5 73. Qd4 Rd8 $1 {[%mdl 512]} 74. Kc6 Qc1+ 75. Kb7 Qa3 76. Qg1+ Kf8 77. Kc6 Qa4+ 78. Kb6 Rxd7 79. Qc5+ Kg7 80. Qg1+ Kf8 81. Qc5+ Kg7 82. Qg1+ Kf8) 60. Kd6 Rd8+ 61. Bd7 Qe2 62. Kc7 Rf8 (62... Qe5+ $142 63. Qd6 Qa5+ 64. Kc6 Qa8+ 65. Kc5 Qa3+ 66. Kd5 Qd3+ 67. Kc6 Qa6+ 68. Kc5 Qa7+ 69. Kc6 Qa6+ 70. Kc7 Qa5+ 71. Kc6 Qa8+ 72. Kc5 Qa7+ 73. Kc6 Qa8+) 63. Kd6 Ra8 {Played: Rf8-d8} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.3"]
[White "Budnikov, Oleg"]
[Black "Vokac, Marek"]
[Result "1/2-1/2"]
[ECO "E81"]
[WhiteElo "2432"]
[BlackElo "2334"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,76,49,38,0,0,0,15,3,15,-21,-20,-22,-19,-24,-22,-33,-33,-199,-39,-33,0,0,0,-4,0,-83,0,-16,-10,0,0,-7,-4,-4,0,0,20,20,45,49,33,34,27,31,50,0,0,-51,-52,-52,-58,-52,-45,-60,-26,-56,-39,-39,-39,-85,-52,-108,-96]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 a6 7. Qd2 Nbd7 8. Nh3 c6 9. c5 {E81: King's Indian: Sämisch: 6th move deviations (including 6 Be3 c6)} dxc5 $146 ({Predecessor:} 9... b6 10. cxd6 exd6 11. Be2 b5 12. O-O Nb6 13. Nf2 Re8 14. Bh6 Bh8 15. Bg5 b4 16. Ncd1 a5 {1-0 (41) Atalik,S (2599)-Brankovic,D (2349) Paracin 2012}) 10. dxc5 Ne5 {...Bxh3 is the strong threat.} 11. Nf2 {The position is equal.} Be6 12. Qxd8 Raxd8 13. Rc1 Nh5 14. b3 f5 $36 {[%mdl 2048] Black has some pressure.} 15. f4 Bh6 16. exf5 $2 (16. g3 $15) 16... gxf5 $2 ({Don't take} 16... Bxf5 17. g3 $15) (16... Nxf4 $19 17. fxe6 Nxg2+ {[%mdl 64] Discovered Attack} 18. Bxg2 Bxe3) 17. g3 $1 $15 Nf3+ 18. Ke2 Nd4+ 19. Bxd4 $1 Rxd4 20. Bh3 {[#]} (20. Bg2 $11 {remains equal.}) 20... Rfd8 (20... Bf7 $1 $17) 21. Rcd1 Bg7 22. Rxd4 Bxd4 23. Rd1 Kf7 24. Na4 Ke8 25. Nd3 Nf6 26. Ne1 {Hoping for Nf3.} Ne4 27. Nf3 Bf6 {aiming for ...Rxd1.} 28. Rxd8+ Kxd8 29. Ke3 Bd7 30. Nd4 {[#]} Nf2 $1 {[%cal Rf2h3][%mdl 512]} 31. Kxf2 (31. Nxc6+ $1 $11 Bxc6 32. Kxf2) 31... Bxd4+ $11 {[%mdl 4096] Endgame KBB-KBN} 32. Ke2 Be6 33. Bg2 Bf7 34. Bf3 Kc7 35. Kf1 e5 36. fxe5 Bxe5 37. Kg2 h6 38. Kf2 {[#]} ({Better is} 38. Kf1 $15) 38... Bd4+ $1 {Accuracy: White = 45%, Black = 45%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.4"]
[White "Wang, Yukun"]
[Black "Low, Zhen Yu Cyrus"]
[Result "1/2-1/2"]
[ECO "B62"]
[WhiteElo "1990"]
[BlackElo "2415"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,97,17,21,0,0,0,0,0,0,-22,0,-1,-3,0,-3,0,0,0,0,-63,-20,-35,-38,-48,-37,-35,-23,-71,-70,-73,-71,-64,-72,-59,-56,-68,-68,-61,-54,-54,-54,-90,-74,-79,-95,-91,-14,-18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Be2 Be7 8. O-O O-O 9. a4 {B62: Sicilian: Richter-Rauzer: 6...e6: Unusual White 7th moves} h6 10. Be3 e5 11. Nb3 Nb4 $146 ({Predecessor:} 11... Be6 12. Bf3 Nb4 13. Qe2 Qc8 14. Rfd1 Rd8 15. Rac1 Bc4 16. Qd2 d5 17. exd5 Nfxd5 18. Nxd5 Nxd5 19. Bxd5 Bxd5 {0-1 (33) Predke,A (2530)-Kovalevskaya,E (2438) Moscow 2015}) 12. f4 exf4 13. Bxf4 d5 14. e5 Ne4 15. Nxe4 dxe4 16. c3 Nd5 {[%cal Bb4d5,Bd5b6,Bb6c4][%mdl 32]} 17. Qd4 (17. Bc1 $11) 17... Be6 18. Bd2 Nb6 $36 {[%mdl 2048] White is under pressure.} 19. Qxd8 Rfxd8 (19... Raxd8 {keeps more tension.} 20. Nd4 Bc5 21. Be3 Bc4 22. Kf2 a5) 20. Nd4 Bc5 21. a5 Nc4 22. Bxc4 $1 Bxc4 23. Rfe1 Bd3 24. Be3 Rd5 25. b4 Bf8 26. e6 f5 27. Rac1 Bc4 28. g4 fxg4 29. Bf2 Bd3 30. c4 {[#]} Rxd4 $1 {[%mdl 512]} 31. Bxd4 $11 {The position is equal.} Bxb4 {[%mdl 64] Double Attack} 32. Rb1 $1 {[%cal Rb1b4]} Bxe1 33. Rxb7 e3 {Threatens to win with ...Bf2+.} 34. Rxg7+ Kf8 35. Rf7+ $1 Kg8 36. Rg7+ Kf8 37. Rf7+ $1 Ke8 38. Bc5 $1 {[%csl Gc5][%cal Rf7f8] [#]} Bf2+ 39. Kg2 {[%csl Gc5][%cal Rf7f8]} Be4+ 40. Kf1 {[%csl Gc5][%cal Rf7f8]} Bd3+ 41. Kg2 {[%csl Gc5][%cal Rf7f8]} Be4+ 42. Kf1 {[%csl Gc5][%cal Rf7f8]} Kd8 43. Bd6 {[%cal Rf7f8]} Bc6 44. Bc7+ Kc8 {Strongly threatening ...Kb7.} 45. Bd6 {Rc7+ is the strong threat.} Ba4 46. a6 {Threatening mate with Rf8+.} Kd8 {Black wants to play ...Rc8.} 47. Bc7+ Ke8 {White must now prevent ...Bb3.} 48. Bd6 {[%csl Gd6][%cal Rf7f8]} Kd8 {White should prevent ...Rc8.} 49. Bc7+ {Accuracy: White = 77%, Black = 78%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.5"]
[White "Lalic, Bogdan"]
[Black "Sharma Isha"]
[Result "1/2-1/2"]
[ECO "E94"]
[WhiteElo "2402"]
[BlackElo "2169"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,25,63,48,59,61,75,67,105,97]} 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. e4 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Qe7 9. Qc2 c6 10. Rfe1 Ng4 {E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves} 11. Bg5 f6 {[#]} 12. Bh4 $1 h5 13. h3 {Predecessor:} Nh6 $146 14. Rad1 Nf7 15. Bg3 Kh7 16. Nh4 Bh6 17. f4 exf4 18. e5 {1-0 (27) Shulman,Y (2568)-Ginsburg,M (2400) Las Vegas 2001} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.6"]
[White "Peng, Hongchi"]
[Black "Vignesh B"]
[Result "1/2-1/2"]
[ECO "E20"]
[WhiteElo "2362"]
[BlackElo "1912"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,84,35,42,0,115,101,109,105,131,131,145,140,122,136,147,125,131,124,236,225,210,114,114,114,114,115,115,115,115,115,115,112,117,95,98,87,98,98,98,98,98,91,91,91,90,86,87,91,125,125,114,84,85,83,88,8,8,8,8,8,12,8,59,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 b5 6. e4 bxc4 7. Bxc4 Nxd5 8. Bxd5 exd5 9. Qxd5 Nc6 10. Be3 {E20: Nimzo-Indian: 4 g3 and 4 f3} (10. Nge2 Ba6 11. a3 Bxc3+ 12. Nxc3 Qb6 13. Rb1 O-O 14. Kf2 Nd4 15. Na4 Qb5 16. Nc3 Qb6 17. Na4 Qb5 18. Nxc5 Rac8 19. Qxd4 Rxc5 {1-0 (33) Nigalidze,G (2508)-Shagbazyan,T (2412) Tbilisi 2019}) 10... Qa5 (10... Ba6 $11 {remains equal.}) 11. Nge2 $16 Ba6 12. Kf2 {White is better.} Rb8 {next ...Bxc3 is good for Black.} 13. Rab1 O-O 14. a3 ({Worse is} 14. Qxd7 Ne5 $15) 14... Bxc3 15. Nxc3 Rfe8 16. Rhd1 ({Much worse is} 16. Qxd7 $6 Ne5 $11) 16... Ne5 {[#] White should prevent ...Bc4.} 17. b4 $1 {[%mdl 512]} Qc7 $146 (17... Qd8 $16) (17... cxb4 18. Qxa5) ({Predecessor:} 17... Qd8 18. Bxc5 Qf6 19. Bd4 {0-1 (37) Cameron,A (2102)-Lee,Q (2297) Adelaide 2018}) 18. Bxc5 Nc4 19. b5 (19. Bd4 $18) 19... Nxa3 20. bxa6 Nxb1 21. Rxb1 ({Don't go for} 21. Nxb1 $2 Re5 $19) 21... Rxb1 22. Nxb1 Rc8 23. Be3 Qxh2 24. Qxd7 {[%cal Rd7c8] [#]} Qc7 25. Qxc7 (25. Qd5 {is more complex.} Qc6 26. Qa5 Qc7 27. Qb4 Qc6 28. Qa3) 25... Rxc7 26. Nd2 Rc2 27. Ke2 Ra2 28. Bxa7 Rxa6 29. Be3 f6 30. f4 Kf7 31. Nb3 Ra3 32. Nc5 g5 33. fxg5 fxg5 34. g4 Kg6 35. Ne6 h6 36. Nf8+ (36. e5 $16) 36... Kf7 $1 $11 {White must now prevent ...Ra2+.} 37. Nd7 Ke6 38. Nb6 Ra2+ 39. Kf3 Rh2 (39... Ra7 $1 $11) 40. Nc4 (40. Bf2 $14) 40... Rh3+ $1 {The position is equal.} 41. Kg2 Rh4 42. Kf3 Rh3+ {Accuracy: White = 65%, Black = 56%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.7"]
[White "Svanda, Ondrej"]
[Black "Laxman, R.R."]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2257"]
[BlackElo "2441"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,44,45,45,41,52,17,43,33,60,22,75,75,85,81,79,20,110,19,36,36,25,33,67,61,43]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 d6 7. c3 O-O 8. Re1 b5 9. Bc2 d5 10. Nbd2 Bg4 11. h3 Bh5 12. a4 {C87: Closed Ruy Lopez: Steinitz-type lines after 6 Re1 d6} (12. Qe2 Re8 13. Nf1 d4 14. g4 Bg6 15. Ng3 Bc5 16. Kh2 Qb8 17. Bg5 Nd7 18. h4 h6 19. h5 Bh7 {1-0 (43) Wei,Y (2727)-Xu,Z (2373) China 2017}) 12... b4 13. Bb3 $146 ({Predecessor:} 13. g4 Bg6 14. a5 bxc3 15. bxc3 Bd6 {0-1 (55) Havasi,G (2367)-Banusz,T (2621) Zalakaros 2016}) 13... dxe4 14. dxe4 Rb8 15. Bc4 Nd7 (15... Na5 $11) 16. Bxa6 $16 {Black must now prevent Bb5.} bxc3 17. bxc3 Na5 18. Qe2 (18. Bf1 $16) 18... Nc5 (18... f6 $11 {remains equal.}) 19. Ba3 (19. g4 $16 Qd6 20. Ba3 (20. gxh5 Nxa6 21. Nc4 Nxc4 $16)) 19... Ne6 20. Bxe7 Qxe7 21. Qe3 Nc5 22. Bf1 Bxf3 {Accuracy: White = 45%, Black = 30%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.8"]
[White "Pushkov, Nikolai"]
[Black "Quesada Vera, Liordis"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "2239"]
[BlackElo "2386"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,90,19,35,11,29,16,18,22,32,16,18,14,21,17,22,14,31,15,35,0,20,19,37,0,80,79,71,62,74,0,79,86,71,81,76,79,84,77,82,80,213,165,181,160,148,166,163,160,196,72,168,149,164,157,239,243,232,224,202,118,100,0,210,165,145,13,25,0,95,109,137,137,145,154,174,41,66,0,186,0,102,0,182]} 1. d4 Nf6 2. Nf3 a6 3. g3 (3. c3 e6 4. Bg5 c5 5. e4 h6 6. Bxf6 Qxf6 7. Bd3 d5 8. O-O dxe4 9. Bxe4 Nd7 10. d5 exd5 11. Bxd5 {½-½ (41) David,A (2553)-Odendahl,R (2352) Dieren 2019}) 3... c5 4. c3 $146 ({Predecessor:} 4. Bg2 g6 5. O-O Bg7 6. c3 O-O 7. dxc5 Qc7 8. b4 Nc6 9. Bb2 b6 10. cxb6 Qxb6 {½-½ (61) Cervino Rossel,C (2109)-Bustos Bernardo,S (1826) Madrid 2014}) 4... b6 5. Bg2 Bb7 6. O-O {A46: 1 d4 Nf6 2 Nf3 e6: Torre, London and Colle Systems} d6 7. Bg5 Nbd7 8. Nbd2 Qc7 9. Re1 h6 10. Bxf6 $1 Nxf6 11. e4 e6 12. d5 $36 {[%mdl 2048] White has some pressure.} e5 13. Nh4 g6 14. f4 Nd7 15. Bh3 b5 16. a4 c4 (16... exf4 $11 {keeps the balance.} 17. gxf4 Be7) 17. axb5 $16 axb5 18. Rxa8+ Bxa8 19. b3 ({White should try} 19. Bxd7+ $1 $16 Qxd7 20. fxe5 dxe5 21. Kh1) 19... Bg7 (19... exf4 $11 20. gxf4 cxb3) 20. Bxd7+ Qxd7 21. f5 $1 {[%cal Rf5g6]} ({Don't play} 21. bxc4 exf4 22. gxf4 Bxc3 $11) 21... g5 22. Ng2 cxb3 23. Qxb3 O-O 24. Ne3 Rc8 (24... Bb7 $16 {keeps fighting.}) 25. Rb1 Qa7 26. Kf2 Kh7 27. Qxb5 Rxc3 28. Qb6 $1 {[%cal Rb6a7]} Qa3 29. Rb3 (29. Rb5 $18 {has better winning chances. aiming for Nb1.} Qa2 30. Ke2) 29... Qa2 (29... Rxb3 $16 30. Qxb3 Qxb3 31. Nxb3 Bb7) 30. Rb2 $18 Qa1 31. Qb4 $1 {[%cal Rb4c3]} Rc8 (31... Rd3 $16 {was called for.}) 32. Rb1 Qa7 33. Qb6 Qa3 34. Qb2 (34. Ke2 $1 $18) 34... Qd3 $16 35. Rc1 (35. Rd1 $16 {Black must now prevent Ndc4.} Bf8 36. Ra1) 35... Rb8 $2 (35... Rxc1 $11 {and Black stays safe.} 36. Qxc1 Bb7) 36. Qc2 Qd4 {And now ...Rb2 would win.} 37. Nf3 (37. Qc3 $16) 37... Qa7 $1 $11 38. Rb1 Bb7 (38... Rxb1 $11 {remains equal.} 39. Qxb1 g4) 39. Qb2 $1 $16 g4 40. Nd2 h5 {intending ...Bh6.} 41. Qb6 $1 {[%cal Rb6a7]} Qa2 42. Rb2 (42. Nec4 $1 $18) 42... Qa1 $1 $14 {...Bh6 is the strong threat.} 43. Rb1 (43. Ndf1 $1 $14) 43... Qa2 $18 {[#]} 44. Rb2 ({White must play} 44. Nec4 $1 $18) 44... Qa1 $1 $16 {[#] Threatens to win with ...Bh6.} 45. Rb1 (45. Ndf1 $1 $16) 45... Qa2 $1 {Accuracy: White = 45%, Black = 47%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.9"]
[White "Kozak, Antoni"]
[Black "Foo, William J"]
[Result "0-1"]
[ECO "D12"]
[WhiteElo "2380"]
[BlackElo "2186"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,69,26,15,17,-3,0,1,2,0,19,19,31,9,39,44,39,34,45,42,53,45,50,41,47,35,35,28,35,0,0,0,27,0,0,-32,-18,-69,-32,-128,-124,-429,-422,-401,-379,-508,-513,-478,-490,-752,-719,-1077,-714,-5393,-2476,-29995,-29996,-29999]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Bg6 7. Nxg6 hxg6 8. Bd3 Nbd7 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5} 9. b3 (9. h3 Bd6 10. O-O dxc4 11. Bxc4 O-O 12. Qc2 c5 13. dxc5 Nxc5 14. Rd1 Qe7 15. Bd2 a6 16. Be2 {½-½ (32) Cheparinov,I (2687)-Artemiev,V (2731) Moscow 2019}) 9... Bb4 $146 ({Predecessor:} 9... Be7 10. O-O O-O 11. Qc2 dxc4 12. Bxc4 c5 13. dxc5 Nxc5 14. Rd1 Qc7 15. Bd2 Rac8 {½-½ (45) Pogonina,N (2457)-Shen,Y (2468) Qinhuangdao 2018}) 10. Bb2 Qa5 {The position is equal.} 11. Qc2 Ne4 12. Bxe4 dxe4 13. O-O-O Bxc3 14. Bxc3 Qf5 15. Bb4 Nf6 16. Bd6 Rd8 17. Be5 Ng4 18. Bg3 Nf6 19. Kb1 O-O 20. h3 b5 21. Be5 bxc4 22. bxc4 Nd7 (22... c5 $5) 23. g4 Qf3 24. Bc7 Rc8 25. Bf4 (25. Bd6 $11) 25... c5 {[#] Strongly threatening ...cxd4.} (25... e5 $5 26. dxe5 (26. Bxe5 Nxe5 27. dxe5 Rfe8 $17) 26... Nc5 $15) 26. Rhg1 ({White should play} 26. d5 $1 $15) 26... cxd4 $17 27. Rd2 $2 {[%mdl 8192]} (27. Rxd4 $17 e5 28. Rg3 exd4 29. Rxf3) 27... d3 $19 28. Qc1 Qxh3 29. f3 {With the idea Rh2.} e5 30. Rh2 Qxf3 31. Rg3 {[#]} (31. Bg5 $142 Rc6 32. Qe1 Rb6+ 33. Ka1) 31... Rxc4 $1 {[%mdl 512]} 32. Qxc4 Qd1+ 33. Kb2 d2 (33... Rb8+ $142 34. Qb3 Rxb3+ 35. axb3 exf4) 34. Rgh3 Rb8+ 35. Kc3 Qc1# {Accuracy: White = 24%, Black = 54%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.10"]
[White "Wiley, Tom E"]
[Black "Neuman, Petr"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "2170"]
[BlackElo "2371"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,40,27,47,26,33,25,91,86,80,9,6,8,12,13,20,20,27,21,38,37,38,28,17]} 1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 e5 5. Be3 Nc6 6. d5 Nce7 7. g4 f5 8. gxf5 gxf5 9. Qh5+ Kf8 10. Bh3 Nf6 11. Qf3 {[%cal Re4f5] A42: Modern Defence: Averbakh Variation} f4 (11... Ng6 12. Bg5 h6 13. Bxf6 Qxf6 14. exf5 Nh4 15. Qd3 Nxf5 16. Ne4 Qh4 17. Ne2 Qh5 18. Rg1 Rg8 {1-0 (112) Sjugirov,S (2641)-Onischuk,V (2591) Khanty-Mansiysk 2013}) 12. Bd2 Ng6 (12... c6 $11) 13. Bxc8 $16 {White is better.} Qxc8 14. Qh3 (14. h4 $16) 14... Qxh3 $146 ({Predecessor:} 14... h5 15. Qxc8+ Rxc8 16. Nh3 Nh4 17. Ke2 f3+ 18. Kd3 Bh6 {½-½ (49) Kostadinovski,Z (1846)-Veleski,R (2211) Skopje 2018}) 15. Nxh3 h6 16. f3 Kf7 17. Ke2 a6 18. Nf2 Bf8 19. Nd3 Be7 20. Be1 Nd7 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.11"]
[White "Ochedzan, Tymon"]
[Black "Malovanyi, Yulian"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2140"]
[BlackElo "2360"]
[Annotator "TA"]
[PlyCount "143"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,143,0,-21,-12,-17,0,-7,0,0,28,55,285,280,255,267,267,244,249,267,253,244,257,254,258,254,252,247,249,191,227,218,220,212,221,231,234,208,262,95,203,208,196,160,160,160,160,160,160,160,160,160,160,160,228,193,234,160,160,154,237,162,345,345,345,345,345,345,345,345,345,345,389,381,375,376,362,361,547,547,547,539,541,534,502,482,540,540,540,536,501,501,494,458,520,467,578,576,937,0,0,0,0,0,0,0,200,214,210,210,552,1554,29977,29977,29977,29979,29978,29979,29991,29992,29992,29993,29993,29994,29994,29994,29997,29997]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 O-O 8. Be2 d6 9. Nc2 Nd7 10. O-O Bxc3 {B37: Sicilian: Maroczy Bind with 5...Bg7, sidelines} 11. bxc3 Nc5 12. f3 Qa5 {The position is equal.} 13. Qd2 Na4 14. Nb4 Nxc3 $2 (14... Qd8 $14) 15. Nxc6 $1 $18 (15. Qxc3 Qxb4 16. Qc2 Qa3 $11) 15... Nxe2+ 16. Kf2 Qc7 17. Nxa7 Rxa7 18. Bxa7 b6 19. Qxe2 (19. Kxe2 $6 Be6 $16) 19... Qxa7 20. Qe3 Be6 21. Rfb1 Rb8 22. a4 Rb7 23. Qd4 f6 24. g3 Kf7 25. Kg2 Qa6 26. Rb4 Qa5 27. Rb5 Qa6 28. f4 $2 (28. g4 $18 {and White stays clearly on top.}) 28... Bd7 (28... Qa8 $16 29. Rb4 Rc7) 29. Rb4 Bc6 30. Kf2 Qa5 31. Rab1 Qh5 32. h4 f5 {[#]} 33. Qd1 $1 {[%cal Rd1h5]} ({Don't do} 33. Rxb6 $6 Bxe4 34. R6b3 (34. Rxb7 Qf3+ 35. Ke1 Qh1+ 36. Kf2 Qh2+ 37. Kf1 Qg2+ 38. Ke1 Qh1+ 39. Kf2 Qh2+ 40. Kf1 Qg2+ 41. Ke1 Qh1+ $11) 34... Rb4 $14) 33... Qxd1 34. Rxd1 Bxe4 $16 {[%mdl 4096] Endgame KRR-KRB} 35. Ra1 Rc7 (35... Ke6 $16 36. a5 bxa5 37. Rxb7 Bxb7 38. Rxa5 Kd7) 36. Ke3 d5 37. Rc1 ({Inferior is} 37. Rxb6 Rxc4 38. Kd2 d4 $11) 37... Rc6 38. Rc3 Ke8 (38... Kg7 $16 39. Kd4 dxc4) 39. Kd2 Rd6 $2 (39... Kd7 {was necessary.} 40. cxd5 Rd6) 40. c5 $18 bxc5 41. Rxc5 d4 42. a5 d3 43. Ra4 Ra6 44. Rb5 Kd7 45. Rb6 Ra7 46. a6 Kc7 47. Rb2 e6 (47... Kc8 $142 48. Ke3 Kc7) 48. Rc4+ Bc6 49. Ra2 Kb6 50. Rb4+ Kc5 51. Rb3 Be4 52. Rxd3 Bxd3 53. Kxd3 {KR-KR} Rd7+ 54. Kc3 {Threatens to win with a7.} Ra7 55. Ra3 h6 56. Ra1 Kd5 57. Kb4 Ke4 58. Re1+ $2 ({Better is} 58. Ka5 $18 e5 59. fxe5 Kxe5 60. Kb6) 58... Kf3 $1 $11 59. Rxe6 Rg7 $1 60. Kb5 {And now Kb6 would win.} Kxg3 61. Kb6 {aiming for a7.} Kxf4 $2 (61... Kxh4 $11 62. a7 Rxa7 63. Kxa7 Kg4) 62. a7 $18 Rg8 63. Kb7 {Rxg6! is the strong threat.} Rg7+ $2 {[#]} (63... Kg3 {is a better chance.} 64. Rxg6+ {[%mdl 64] Promotion} Rxg6) 64. Ka6 $1 Rxa7+ 65. Kxa7 {White mates.} Kg4 66. Rxg6+ Kxh4 {KR-KPP} 67. Kb6 h5 68. Kc5 Kh3 69. Kd4 h4 70. Ke3 Kh2 71. Kf2 h3 {[#]} 72. Rg3 {Played: Rg6-h6} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.12"]
[White "Kvaloy, Aksel Bu"]
[Black "Priehoda, Vitezslav"]
[Result "1/2-1/2"]
[ECO "C46"]
[WhiteElo "2132"]
[BlackElo "2341"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,95,43,50,56,44,39,50,40,73,79,72,81,83,93,100,29,16,22,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-17,-15,-15,-15,-15,0,0,-2,-35,-43,-43,-37,-97,-39,-29,0,-22,-36,-55,0,0,0,0,0,0,0,0,0,-8,0,-8,0,-8,0,0,0,-8,0,-9,0,0,0,-9,0,-36,0,0]} 1. e4 Nc6 2. Nc3 e5 3. Nf3 d6 4. d4 Bd7 (4... Bg4 5. d5 Nce7 6. Bb5+ c6 7. dxc6 bxc6 8. Ba4 Nf6 9. h3 Be6 10. Ng5 Bc4 11. f4 Qc7 12. Bb3 Bxb3 13. axb3 {½-½ (13) Kasimdzhanov,R (2652)-Kazhgaleyev,M (2578) Tashkent 2019}) 5. Bc4 h6 6. Be3 {C46: 3 Nc3: Unusual Black 3rd moves} Nf6 7. h3 a6 8. a4 {White is slightly better.} g5 $146 ({Predecessor:} 8... Qc8 9. a5 Be7 10. Qd2 Bd8 11. Rg1 b5 12. axb6 cxb6 13. Bd5 exd4 14. Nxd4 Nxd5 15. Nxd5 {1-0 (31) Hillenbrand,A (2167)-Mueller,E (2032) Eppelborn 2008}) 9. Qd2 Bg7 10. dxe5 dxe5 11. Bc5 Be6 12. Bxe6 (12. Bd5 $1 $16) 12... Qxd2+ $11 13. Nxd2 {[#] Hoping for Ba2.} fxe6 14. a5 O-O-O 15. Nb3 Nd4 16. O-O-O {[%cal Rb3d4]} Nxb3+ 17. cxb3 Rxd1+ 18. Rxd1 Bf8 19. b4 Nd7 20. Na4 Bxc5 21. Nxc5 Nxc5 22. bxc5 {[%mdl 4096] Endgame KR-KR} Rf8 23. Rd2 h5 24. Kd1 Rf4 25. Re2 Kd7 26. Kc2 Kc6 27. b4 g4 {Strongly threatening ...gxh3.} 28. hxg4 Rxg4 29. g3 (29. f3 $5 {[%cal Rf3g4]} Rg3 30. Kb3 $11) 29... h4 30. gxh4 Rxh4 31. Re3 {[#]} (31. f3 $15) 31... Rf4 ({Black should play} 31... Kb5 $1 $17 32. f3 Rh2+ 33. Kb3 Rd2) 32. f3 $15 Rh4 33. Kb3 Kb5 34. Rc3 Kc6 (34... c6 $1 $15 35. Rd3 Rh3) 35. Kc4 Rh1 36. Rd3 Rc1+ 37. Rc3 Rd1 38. Kb3 Rd2 39. Rc1 Rd4 {And now ...Kb5 would win.} 40. Rc4 {Threatens to win with Rxd4.} Rd1 {With the idea ...Kb5.} 41. Rc3 Rb1+ 42. Kc4 Rd1 {aiming for ...Rd4+.} 43. Kb3 Rd8 44. Ka3 Rd4 (44... Kb5 $5 45. c6 $8 b6 $11) 45. Ka4 Rd1 46. Kb3 Rb1+ 47. Ka3 Kd7 48. c6+ {Accuracy: White = 55%, Black = 53%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.13"]
[White "Domogaev, Sergey"]
[Black "Ptacnikova, Lenka"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2334"]
[BlackElo "2076"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,55,10,14,30,33,31,0,11,3,8,0,30,-1,66,74,90,98,114,124,109,40,39,39,57,51,81,21,37,17,145,30,45,45,50,54,87,85,185,178,167,173,172,172,1186,1149,29993,29992]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 O-O 5. a3 Be7 6. e4 d6 {E11: Bogo-Indian} 7. Be2 Nfd7 (7... Nbd7 8. Qc2 e5 9. Nb1 exd4 10. Nxd4 Re8 11. Nc3 Bf8 12. O-O g6 13. Bg5 c6 14. Rad1 {1-0 (52) Giri,A (2769)-Iturrizaga Bonelli,E (2597) Moscow 2019}) 8. b3 {[%cal Bb2b3,Bb3b4][%mdl 32]} e5 {The position is equal.} 9. d5 a5 10. Bb2 $146 ({Predecessor:} 10. O-O Nc5 11. Ne1 Bg5 12. Bd3 c6 13. Bc2 Bd7 14. Nef3 {1-0 (70) Postny,E (2601)-Horvath,A (2495) Mali Losinj 2019}) 10... Na6 11. O-O g6 ({Black should play} 11... Nb6 $11) 12. b4 $14 f5 13. c5 Nf6 14. exf5 Bxf5 {[#]} 15. Nc4 (15. Qb3 $1 $16) 15... axb4 16. cxd6 cxd6 17. Nfxe5 bxa3 18. Bxa3 (18. Rxa3 $16 Nc7 19. Rxa8 Nxa8 20. Qb3) 18... Ne4 $11 {[#] Threatens to win with ...Nc3.} (18... dxe5 $6 19. d6 $16) 19. Ng4 Nc3 (19... Bxg4 $1 $11 {keeps the balance.} 20. Bxg4 Nac5) 20. Bb2 (20. Nh6+ $16 Kh8 21. Qe1 (21. Bb2 Bf6 $16)) 20... Nxe2+ 21. Qxe2 {[%cal Rg4h6]} Bxg4 $1 22. Qxg4 $40 {[%mdl 128] White mounts an attack.} b5 23. Na5 {[%cal Bc4a5,Ba5c6,Bc6d4][%mdl 32]} ({Don't blunder} 23. Qd4 $2 Bf6 $19) 23... Bf6 (23... Qc8 $16 {keeps fighting.} 24. Qe2 (24. Qd4 Bf6 $11) 24... Bf6) 24. Qe6+ $18 Kg7 25. Nc6 Qc7 26. Nd4 Nc5 $2 (26... Kh8) 27. Rxa8 Qb6 28. Rxf8 {Accuracy: White = 50%, Black = 29%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.14"]
[White "Hajiyev, Kanan"]
[Black "Nasshan, Dennis"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "1996"]
[BlackElo "2307"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,120,0,-13,39,38,55,60,56,56,61,62,67,67,67,65,57,57,66,50,50,50,53,25,66,20,21,31,24,0,11,0,20,0,0,0,0,0,6,0,4,10,4,4,5,0,2,-26,0,-9,25,14,16,19,29,30,28,0,43,-26,-26,-26,-8,-8,-8,-8,0,-7,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,0,-8,-8,-8,-8,-8,0,-8,-8,-8,-8,-8,0,-8,0,-8,-8,-8,-8,-8,-8,-8,0]} 1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. Nc3 cxd4 5. Nxd4 a6 6. g3 Qc7 7. Qd3 d6 {A32: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6} (7... Nc6 $11) (7... b6 8. Bg2 Bb7 9. Bf4 d6 10. Bxb7 Qxb7 11. Nf3 Nc6 12. O-O Be7 13. Rfd1 O-O 14. Ne4 d5 15. Nxf6+ Bxf6 16. cxd5 {1-0 (41) Atalik,S (2509)-Yilmazyerli,M (2491) Paracin 2018}) 8. Bg2 $14 Nbd7 9. b3 Be7 {White is slightly better.} 10. O-O O-O 11. Bb2 Re8 12. Rac1 Bf8 13. Rfd1 Ne5 14. Qd2 $146 ({Predecessor:} 14. Qb1 Bd7 15. Ba1 Rac8 16. Nf3 Nxf3+ 17. Bxf3 Qb8 18. Ne4 Nxe4 19. Bxe4 {1-0 (65) Molchanov,A (2161)-Dolgopolov,A (2274) Alushta 2008}) 14... Bd7 15. Ne4 Nxe4 16. Bxe4 Nc6 17. Ba3 Red8 18. h4 Nxd4 19. Qxd4 {[%cal Ra3d6]} Bc6 20. Bb2 Qa5 21. a3 Rac8 22. Qd3 Bxe4 23. Qxe4 b5 24. Qd3 Qb6 25. e4 bxc4 26. Rxc4 Rxc4 27. Qxc4 Qb7 28. Rc1 d5 29. Qd3 Qa8 30. Rd1 Qc8 31. exd5 Rxd5 32. Qe2 Qd7 33. Rxd5 Qxd5 34. Qc2 (34. b4 {feels hotter.} Qb3 35. Bc1 Qc3 36. Qb2 Qc4 37. Be3) 34... e5 (34... a5 {is interesting.} 35. b4 axb4 36. axb4 f6 37. Bc3 Qc4) 35. Qc4 (35. b4 $14) 35... Qxc4 $11 36. bxc4 {[%mdl 4096] Endgame KB-KB} f6 37. h5 {The position is equal.} Kf7 38. f3 Ke6 39. g4 g6 40. hxg6 hxg6 41. Kf2 f5 42. Ke3 Bc5+ 43. Kd3 Kd6 44. a4 Ke6 45. Bc3 Bd6 46. Ba5 Kd7 47. Bb6 Kc6 48. Be3 Bc5 {[#] aiming for ...Bxe3.} 49. Bg5 Bd6 50. Be3 Bc7 51. Bf2 Bb6 52. Bh4 Bc5 53. Bg3 Bd6 {[#] Hoping for ...e4+!} 54. Bf2 Bc7 55. Be3 Bd6 56. Bf2 Bc5 57. Bg3 Kd6 58. Be1 Bb6 59. Bh4 Bc7 60. Bf2 Kc6 {Accuracy: White = 49%, Black = 55%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.15"]
[White "Siddharth, Jagadeesh"]
[Black "Jordanov Mihail"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2301"]
[BlackElo "2012"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,89,27,24,14,26,11,29,14,29,0,0,-21,-26,-18,-20,-26,0,-36,-27,-29,-16,-43,-38,-65,-19,-19,-19,-20,-20,-27,-31,-50,-27,-60,-20,-36,-22,-18,0,-44,-23,-72,-56,-66,-55,-75,-51,-56,-56,-124,-124,-130,-134,-135,-104,-106,-100,-100,-100,-94,-60,-83,-29,-24,-31,-54,-49,-57,0,-11,-6,-6,0,0,0,-11]} 1. d4 Nf6 2. Nf3 e6 3. g3 d5 4. c4 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. a4 Bd7 9. Bg5 {E05: Open Catalan: 5 Nf3 Be7} (9. Qxc4 Bc6 10. Bg5 Nbd7 11. Nc3 h6 12. Bxf6 Nxf6 13. Rfd1 Qd6 14. Qd3 Rfd8 15. e4 Qb4 16. Qc2 Rac8 17. Rd2 Qb6 18. Rad1 Bb4 19. Ne5 Be8 {0-1 (60) Le,Q (2713)-Aronian,L (2775) Moscow 2019}) 9... Bc6 10. Nbd2 h6 11. Bxf6 $1 {White has an edge.} Bxf6 12. Qxc4 $146 ({Predecessor:} 12. Rfd1 b5 13. b3 cxb3 14. Nxb3 Qd5 15. Na5 bxa4 16. Nxc6 Nxc6 17. Rxa4 {1-0 (56) Gozzoli,Y (2630)-Ke,I (2251) chess.com INT 2019}) 12... a5 13. e4 Na6 14. Rfd1 Nb4 15. b3 Qd7 16. e5 Be7 17. Ne1 Bxg2 18. Nxg2 Rfd8 19. Nf3 Qc6 (19... c5 {is interesting.} 20. Qe2 Nd5 21. Rac1 Rac8 22. Rc2 b6) 20. Qxc6 Nxc6 21. Ne3 Nb4 22. Rdc1 Rd7 23. Rc4 Rad8 24. Kg2 Na6 25. Rac1 Ba3 26. R1c2 Be7 27. Nf1 Bb4 28. g4 b6 29. Ng3 c5 {[%cal Rc5d4]} 30. Ne2 cxd4 31. Nexd4 Bc5 {[%cal Rc5d4]} 32. Nb5 ({Better is} 32. Nc6 $15 Rc8 33. b4) 32... Nb4 $17 33. Re2 Rd3 34. Nc3 Nd5 35. Rc2 Nxc3 36. R4xc3 Rxc3 37. Rxc3 {[%mdl 4096] Endgame KRB-KRN} Rd5 38. Kf1 Kf8 (38... Rd1+ $17 39. Kg2 g5) 39. Ke2 $11 Ke7 40. Rc4 Kd7 41. h4 {[#]} Bb4 ({Black should play} 41... b5 $1 $15 {[%mdl 512]} 42. Rc3 (42. axb5 Bb6) 42... Bb6) 42. Rf4 {The position is equal.} Ke7 43. Rc4 Kd7 44. Rf4 Ke7 45. Rc4 {Accuracy: White = 34%, Black = 37%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.14"]
[Round "6.16"]
[White "Strebkovs, Andrejs"]
[Black "Koubova, Anna Marie"]
[Result "1-0"]
[ECO "D70"]
[WhiteElo "2278"]
[BlackElo "1930"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,65,0,0,88,90,143,78,89,78,97,37,39,31,45,35,98,20,31,25,34,27,62,75,77,63,63,63,65,65,86,64,176,181,246,262,241,241,258,287,287,281,262,248,272,277,376,441,441,439,549,486]} 1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. Nc3 Bg7 7. Be3 O-O 8. Qd2 e5 9. d5 Qe7 $146 {D70: Grünfeld: Unusual White 3rd moves (met by ...d5)} (9... c6 $11 {remains equal.}) ({Predecessor:} 9... c6 10. Rd1 cxd5 11. exd5 N8d7 12. Nh3 e4 13. fxe4 Ne5 14. Nf2 f5 15. Bc5 Rf7 16. Be2 f4 17. Bf3 {½-½ (25) Aronian,L (2805)-Vachier Lagrave,M (2789) London 2017}) 10. h4 $16 Qb4 (10... f5 $142) 11. Nb5 ({Better is} 11. h5) 11... Qxd2+ {White is better.} 12. Kxd2 Na6 13. Rc1 (13. h5 $16) 13... c6 $1 $14 {[%cal Rc6b5]} 14. Nxa7 $1 Rxa7 15. Bxb6 Ra8 (15... Bh6+ $14 16. Be3 Bxe3+ 17. Kxe3 cxd5) 16. a3 (16. Ne2 $16) 16... cxd5 $11 17. exd5 Bh6+ 18. Be3 Bxe3+ 19. Kxe3 Rd8 20. Bxa6 bxa6 21. Rc5 $36 {[%mdl 2048] White has some pressure.} Bb7 22. Ne2 Rxd5 23. Rhc1 Rad8 (23... Rb8 $14) 24. Rxd5 $18 Bxd5 {[%mdl 4096] Endgame KRB-KRN} (24... Rxd5 {is a better defense.} 25. Rc7 Rb5) 25. Rd1 Rd7 26. Nc3 $1 Bc6 27. Rxd7 Bxd7 {KB-KN} 28. Ke4 $1 f6 29. Kd5 $1 Kf7 30. Kd6 Bf5 {[#]} 31. b4 $1 {[%cal Bb2b4,Bb4b5][%mdl 32]} Bd3 {[#] intending ...Bf1.} 32. a4 $1 Bf1 33. b5 {Accuracy: White = 63%, Black = 49%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.1"]
[White "Liu, Zhaoqi"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "2328"]
[BlackElo "2491"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,120,0,40,0,0,0,0,-87,-81,-92,-87,-82,-39,-59,-17,-17,-16,-23,-15,-14,-12,-12,-12,-12,-12,-12,-11,-17,-11,-10,-10,-12,-7,-12,-8,-14,-15,-97,-102,-98,-110,-161,-101,-97,-70,-65,-70,-162,-162,-162,-160,-162,-168,-166,-156,-173,-147,-165,-163,-245,-190,-222,-220,-493,-659,-866,-845,-800,-713,-764,-733,-1504,-1434,-1480,-1390,-1332,-1204,-7053,-6043,-29972,-29944,-29943,-5539,-29968,-29969,-29969,-29970,-29968,-29971,-29971,-29972,-29972,-29973,-29973,-29974,-29974,-29975,-29975,-29976,-29976,-29977,-29978,-29979,-29980,-29981,-29981,-29982]} 1. c4 f5 2. Nc3 Nf6 3. g3 g6 4. Bg2 Bg7 5. e3 O-O 6. Nge2 e5 7. O-O d6 8. d4 Nc6 {[%cal Bb8c6,Bc6d4,Bd4e2][%mdl 32]} 9. dxe5 {A25: English Opening vs King's Indian with ...Nc6 but without early d3} (9. Rb1 a5 10. a3 Kh8 11. b4 axb4 12. axb4 Ne7 13. Qb3 c6 14. Rd1 e4 15. f3 d5 16. cxd5 Nexd5 17. Nxd5 Nxd5 {0-1 (41) Reinderman,D (2573)-L'Ami,E (2615) Delft 2013}) 9... dxe5 10. e4 Nd4 $146 ({Predecessor:} 10... fxe4 11. Nxe4 Nxe4 12. Bxe4 Qf6 13. Bg2 Be6 14. Qc2 Rad8 15. Be3 Nd4 16. Nxd4 exd4 17. Bf4 c6 18. Rab1 Bf5 19. Be4 {0-1 (19) Luetzen,P-Walgenbach,M Passau 1997}) 11. f4 (11. exf5 $11 Bxf5 12. Nxd4 exd4 13. Nb5) 11... Nxe4 $17 12. fxe5 Nxe2+ 13. Qxe2 Qd4+ (13... Bxe5 $6 14. Nxe4 fxe4 15. Rxf8+ Qxf8 16. Bxe4 $11) 14. Kh1 {[%cal Rc3e4]} Be6 (14... Bxe5 15. Nxe4 fxe4 16. Rxf8+ Kxf8 17. Bh6+ Kf7 18. Rf1+ (18. Qxe4 Qxe4 19. Bxe4 Bh3 $11) (18. Bxe4 Be6 $16) 18... Bf6 19. Bg5 $18 (19. Bxe4 Be6 $16) (19. Qxe4 Qxe4 20. Bxe4 Bh3 $11)) (14... Nxc3 {feels hotter.} 15. bxc3 Qc5 16. Bf4 c6 17. Rab1 h6) 15. Nxe4 fxe4 16. Rxf8+ Rxf8 (16... Bxf8 {with more complications.} 17. Bf4 Bxc4 18. Qxe4 Qxe4 19. Bxe4 Be6) 17. Bf4 Bxc4 18. Qxe4 Qxe4 19. Bxe4 c6 20. Rd1 Re8 21. Bf3 Kf7 (21... Bxe5 $2 22. Re1 $18) 22. b3 $1 {[%cal Rb3c4]} Be6 23. Kg2 a5 24. h4 Ra8 25. Rb1 Rd8 26. b4 (26. h5 $11) 26... a4 $1 ({Much worse is} 26... Bxa2 $6 27. Rb2 $11) 27. b5 Bxa2 28. Rb4 {[#]} (28. Ra1 $17 {was necessary.} Bb3 29. bxc6 bxc6 30. Bxc6) 28... cxb5 ({Black should try} 28... a3 $1 $19 29. bxc6 bxc6) 29. Rxb5 Rd7 {aiming for ...a3.} 30. Ra5 Bb3 $1 31. e6+ (31. Ra7 $15) 31... Kxe6 $19 32. Bg4+ Ke7 33. Bg5+ Kd6 {Hoping for ...Rf7.} 34. Bxd7 Kxd7 {[%mdl 4096] Endgame KRB-KB} 35. Ra7 Kc6 36. Kf3 Bf8 37. Bc1 (37. Ra8 $142 Bb4 38. Ke4) 37... h5 38. Ra8 Bd6 39. Bf4 $2 (39. Bg5) 39... Bxf4 40. Kxf4 {KR-KB} Kb5 41. Ra7 b6 42. Ke3 Kb4 43. Ra6 b5 {[%cal Bb6b5,Bb5b4,Bb4b3,Bb3b2][%mdl 32]} 44. Kd2 a3 45. Kc1 Bd5 46. Kb1 Kb3 47. Ka1 b4 48. g4 Kc3 {( -> ...b3)} 49. gxh5 gxh5 {Black mates.} 50. Ra5 Bc4 51. Ra7 b3 52. Rxa3 Bf1 ({Weaker is} 52... Kc2 53. Ra2+ bxa2 $11) 53. Kb1 Bb5 54. Kc1 Bd3 55. Kd1 Kb4 56. Ra7 b2 57. Rb7+ Kc3 58. Rc7+ {[#]} Kd4 $1 ({Worse is} 58... Bc4 59. Rxc4+ Kb3 60. Rc1 $11) 59. Rd7+ Ke3 {[%cal Rb2b1]} 60. Re7+ Kf4 {Accuracy: White = 47%, Black = 90%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.2"]
[White "Stankovic, Milos"]
[Black "Czerw, Dawid"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2466"]
[BlackElo "2262"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,78,-4,4,8,33,32,19,15,12,16,10,9,45,11,14,16,11,12,12,-39,-40,-39,2,3,5,16,30,4,18,0,0,-7,26,0,15,0,0,0,0,0,0,0,0,-38,0,0,0,0,0,0,0,0,1502,0,0,0,0,0,0,-280,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. b3 b6 4. Bd3 (4. Bb2 Bb7 5. Qe2 Nc6 6. g3 Nf6 7. Bg2 d6 8. O-O e5 9. Nc3 g6 10. Nd5 Bg7 11. c4 O-O 12. d3 Bc8 13. h3 {½-½ (63) Akopian,V (2650)-Inarkiev,E (2693) St Petersburg 2018}) 4... Bb7 5. O-O d6 6. Bb2 $146 {B40: Sicilian: 2...e6, Unusual lines} ({Predecessor:} 6. Re1 Nd7 {½-½ (40) Pridorozhni,A (2589)-Makarian,R (2343) Voronezh 2018}) 6... Nd7 7. Re1 Ngf6 8. c3 Be7 9. Bc2 O-O 10. d4 cxd4 11. cxd4 d5 {[%cal Rf6e4]} 12. e5 $1 {[%cal Re5f6]} Ne4 13. Nfd2 {[%cal Rd2e4]} f5 14. exf6 (14. f3 $11) 14... Ndxf6 $15 15. f3 Nxd2 16. Nxd2 Bd6 17. Nf1 Qd7 18. Qd3 Rae8 19. Ng3 g6 20. Rac1 Qd8 21. Re2 Qb8 22. Rce1 Bxg3 23. hxg3 Qxg3 24. Ba3 Nh5 {[%cal Bf6h5,Bh5f4,Bf4e2][%mdl 32]} 25. Bxf8 Nf4 26. Qd2 {Strongly threatening Bh6.} Nxe2+ 27. Rxe2 Kxf8 28. Qh6+ Kg8 29. Re5 {And now Rg5! would win.} Re7 $1 30. Rg5 $1 {[%cal Rg5g3]} Qe1+ 31. Kh2 Rg7 $1 32. Re5 $40 {[%mdl 128] White is up to no good.} Qc3 {[%mdl 64] [#] Double Attack} 33. Rxe6 Qxc2 34. Re8+ Kf7 {aiming for ...Qc7+.} 35. Re7+ $1 {[%mdl 64] Decoy. The position is equal.} Kxe7 36. Qxg7+ Kd8 {...Qc7+ is the strong threat.} 37. Qxb7 {[%mdl 64] [#] Double Attack} Qc7+ 38. Qxc7+ Kxc7 39. Kg3 {Threatens to win with Kf4.} Kd6 {Accuracy: White = 65%, Black = 62%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.3"]
[White "Strebkovs, Andrejs"]
[Black "Budnikov, Oleg"]
[Result "0-1"]
[ECO "E95"]
[WhiteElo "2278"]
[BlackElo "2432"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,76,35,48,19,38,-17,0,-21,-25,-24,-20,-20,0,0,0,0,0,0,8,0,8,31,87,89,90,0,0,-108,-105,-99,0,0,0,0,0,0,0,0,0,0,0,-26,-41,-539,-542,-516,-511,-516,-531,-496,-462,-468,-474,-5393,-5349]} 1. d4 g6 2. e4 d6 3. c4 Bg7 4. Nc3 Nf6 5. Be2 O-O 6. Nf3 Nbd7 7. O-O e5 8. Re1 c6 9. Rb1 exd4 10. Nxd4 Nc5 11. Bf1 Re8 12. f3 a5 13. b3 {E96: King's Indian: Classical: 7...Nbd7 8 Re1 c6 9 Bf1 a5} (13. Be3 a4 14. Qd2 Nh5 15. Rbd1 Be5 16. g4 Ng7 17. Nxc6 bxc6 18. Bxc5 Bxg4 19. Bxd6 Bxf3 20. Bxe5 Qxd2 21. Rxd2 Rxe5 {½-½ (45) Ivkov,B (2420)-Sargissian,G (2693) Valjevo 2012}) 13... Nh5 14. g4 ({Better is} 14. Be3 $14) 14... Nf6 15. Be3 {The position is equal.} h5 {[%cal Rh5g4]} 16. h3 $146 ({Predecessor:} 16. g5 Nfd7 17. Rb2 Ne5 18. h3 Ne6 19. Nxe6 Bxe6 20. Rc2 f6 21. f4 Nf7 22. f5 gxf5 23. g6 Ng5 24. Qxh5 fxe4 25. Bxg5 Bf5 26. Qh7+ Kf8 27. Bh6 {1-0 (27) Ubiennykh,E (2308)-Kineva,E (2130) Barnaul 2011}) 16... hxg4 17. hxg4 Nfxe4 18. Nxe4 Nxe4 19. fxe4 Rxe4 20. Qd2 Rxg4+ 21. Bg2 Qh4 {[%cal Rg4d4]} 22. Nf3 Qh5 (22... Qh8 $1 $14) 23. Nh2 $1 $16 {[%cal Rh2g4]} Rh4 24. Bf4 (24. Qxd6 $16 Bf5 25. Bf2) 24... Bh3 25. Qxd6 (25. Bxh3 $11 {keeps the balance.} Rxh3 26. Re3 (26. Qxd6 g5 $16) (26. Bxd6 Bc3 $17)) 25... Bxg2 $17 26. Kxg2 Qf5 (26... a4 $1 $17 {[%cal Ra4b3] Strongly threatening ...axb3.} 27. Kg1 Bf8) 27. Bg3 $11 Qh3+ 28. Kh1 $1 Rd4 ({Much weaker is} 28... Rg4 $6 29. Rg1 $16) 29. Qc7 $1 {[%cal Rc7b7]} Rd2 {[%csl Gd2][%cal Rh3g2]} 30. Rg1 Re8 {Hoping for ...Rxh2+!} 31. Rbf1 (31. Qxa5 {gets mated.} Rxh2+ $1 {[%mdl 512]} 32. Bxh2 Re2 33. Qd8+ Bf8 34. Rxg6+ fxg6 35. Qxf8+ Kxf8 36. Rf1+ Qxf1+ 37. Bg1 Qg2#) 31... f5 $1 {aiming for ...Rxh2+!} 32. Qf4 (32. Qxa5 $2 Ree2 $1 $17 {[%mdl 512]}) 32... Ree2 $40 {[%mdl 128] Threatens to win with ...g5. White needs to defend precisely.} 33. Bf2 $2 {[%mdl 8192] [#]} ({White has to play} 33. Rf2 $1 $15) 33... Be5 $1 $19 {[%mdl 512] Black is clearly winning.} 34. Rxg6+ {[#]} Kf7 $1 {[%mdl 512]} 35. Qh6 Qxh6 ({Stronger than} 35... Rxf2 {[#]} 36. Rf6+ $1 {[%mdl 512]} Bxf6 37. Qxh3 $18) 36. Rxh6 {Black must now prevent Nf3.} Rxf2 37. Rxf2 Rxf2 38. Rh3 (38. c5 $142 Bd4 39. a4) 38... Rxh2+ {Accuracy: White = 28%, Black = 63%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.4"]
[White "Low, Zhen Yu Cyrus"]
[Black "Ochedzan, Tymon"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2415"]
[BlackElo "2140"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,58,11,8,14,17,49,31,45,19,25,18,14,25,16,14,25,25,34,17,22,29,18,12,73,68,78,69,82,78,225,227,756,744,796,630,871,858,933,866,920,753,29992,29993,29993,29994,29996,29997,29998,29999,29999]} 1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 Nxb5 5. Nxb5 d6 6. d4 ({Predecessor:} 6. O-O a6 7. Nc3 Nf6 8. d4 cxd4 9. Qxd4 e5 10. Qd3 h6 11. Nd2 {0-1 (47) Wyder,B (2045)-Korabliov,A ICCF email 2009}) 6... cxd4 $146 {B23: Closed Sicilian: Lines without g3} (6... Nf6 7. Qd3 a6 8. Nc3 cxd4 9. Nxd4 e6 10. Bg5 Be7 11. O-O-O Qc7 12. f4 b5 13. a3 O-O 14. h4 {½-½ (31) Safarli,E (2681)-Tabatabaei,M (2590) Bandar e Anzali 2019}) 7. Qxd4 {aiming for Qc3.} a6 8. Nc3 e5 {White is slightly better.} 9. Qd3 (9. Qb4 {is interesting.} Ne7 10. O-O Nc6 11. Qb3 Na5 12. Qd5) 9... Be7 10. O-O h6 11. Nd2 Nf6 12. Nc4 b5 13. Ne3 $36 {[%mdl 2048] White has the initiative.} O-O 14. a4 b4 15. Ncd5 a5 16. Rd1 Bb7 (16... Nxd5 $11 17. Nxd5 Bg4) 17. Nxe7+ $16 {[%mdl 64] Discovered Attack} Qxe7 18. Nf5 Qe6 $1 {[#]} 19. Qg3 $1 {[%csl Gf5][%cal Rg3g7][%mdl 512]} Nh5 (19... g6 $16) 20. Qg4 $18 g6 $2 (20... Rfd8 21. Nxh6+ (21. Qxh5 Bxe4 22. Ne3 d5 $16) 21... Kh7) 21. Rxd6 Nf6 22. Qe2 (22. Rxe6 Nxg4 23. Nxh6+ Nxh6 $14) 22... Ba6 23. Qf3 ({Less strong is} 23. Rxe6 Bxe2 24. Rxf6 (24. Nxh6+ Kg7 $18) 24... gxf5 $18) 23... Qc4 24. Bxh6 {Ne7+ would kill now.} Nxe4 {[#]} 25. Rc6 $1 {[%mdl 512]} Nd2 (25... Qxc6 26. Ne7+) 26. Ne7+ {White mates.} Kh7 {[#]} 27. Qf6 $1 {[%csl Gh6][%cal Rf6g7]} Kxh6 28. Rxc4 Bxc4 29. Nf5+ Kh5 30. Qh4# {Accuracy: White = 90%, Black = 28%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.5"]
[White "Foo, William J"]
[Black "Lalic, Bogdan"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2186"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,74,-25,20,5,4,12,10,-13,-7,-36,-37,-10,-4,-51,-47,-63,-67,-112,-48,-49,-43,-49,-39,-51,-41,-84,-83,-83,-88,-88,-90,-100,-76,-134,-134,-137,-135,-132,-128,-158,-159,-161,-162,-158,-158,-159,-164,-203,-197,-202,-193,-200,-178,-291,-278,-432,-416,-568,-515,-520,-302,-304,-293,-388,-343,-382,-381]} 1. d4 Nf6 2. g3 c5 3. Nf3 cxd4 4. Nxd4 Nc6 5. Bg2 g6 6. e4 {A04: Unusual lines after 1 Nf3 and King's Indian Attack} Nxd4 7. Qxd4 d6 $1 8. h3 {The position is equal.} Bg7 9. Be3 O-O 10. Qd2 {[#]} d5 $1 {[%mdl 512]} 11. exd5 Nxd5 12. Bd4 {[#] aiming for Bxg7.} Nf4 $1 {[%mdl 512]} 13. Qxf4 {[#] And now Bxg7 would win.} Bxd4 ({Much less strong is} 13... Qxd4 14. Qxd4 Bxd4 15. c3 $15) ({Black should play} 13... e5 $1 $17 {[%cal Re5f4]} 14. Qc1 (14. Bxe5 $2 Bxe5 15. Qc1 Bxb2 $19) 14... exd4) 14. c3 $1 $15 {[%cal Rc3d4]} Bg7 15. Nd2 Be6 16. O-O Qb6 17. Nc4 Qb5 18. b3 Rac8 19. Qe3 b6 20. Rac1 Qa6 21. Rc2 ({Better is} 21. Ne5) 21... Bxc4 $17 22. bxc4 e6 ({Resist} 22... Qxc4 23. Qxe7 Rc7 24. Qd6 $15) 23. Rd1 Qxc4 {Played: Qa6-a4} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.6"]
[White "Sharma Isha"]
[Black "Peng, Hongchi"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2169"]
[BlackElo "2362"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,88,-7,0,-18,0,9,25,14,45,48,53,42,57,31,44,31,26,31,52,52,51,64,85,75,68,41,100,34,88,91,87,64,104,15,36,-11,-8,-22,-12,-26,0,-12,0,-8,0,-41,5,0,0,0,0,0,56,67,71,63,104,67,75,72,70,41,31,39,32,40,72,67,91,61,189,14,18,20,52,-29987,-29988,-29988,-29989,-29989,-29990]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. Bxc6+ bxc6 5. e5 dxe5 6. Nxe5 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} Qd5 (6... f6 7. Qh5+ g6 8. Nxg6 hxg6 9. Qxh8 Qd5 10. O-O Kf7 11. Nc3 Qd4 12. d3 Bg7 {1-0 (21) Caruana,F (2787)-Nakamura,H (2793) Saint Louis 2015}) 7. Nf3 $1 Qe4+ 8. Kf1 {White has an edge.} Ba6+ $146 ({Predecessor:} 8... Nf6 9. d3 Qf5 10. Nbd2 g6 11. b3 Bg7 12. Bb2 O-O {1-0 (39) Hou,Y (2658)-Zwirs,N (2413) Germany 2018}) 9. d3 Qf5 10. Qe2 Rd8 {[%cal Rd8d3]} 11. Ne5 Nf6 12. Nd2 ({Worse is} 12. Nxc6 c4 $17) 12... Nd5 {Black wants to play ...Nb4.} 13. Ndc4 Bxc4 14. Nxc4 g6 15. h4 Bg7 16. h5 O-O 17. Bd2 Rfe8 (17... Nb6 $14) 18. a3 (18. Re1 $16) 18... e5 ({Better is} 18... Nb6 $1 $14) 19. Re1 $16 Nf6 20. h6 Bh8 21. Ne3 (21. Rh4 $16) 21... Qd7 22. Bc3 Nd5 23. Ba5 Rb8 24. Nc4 Re7 25. Qf3 f5 26. Bd2 Rbe8 27. Bg5 Rf7 28. Qg3 f4 29. Qh3 Rf5 30. Nd2 Bf6 ({Black should try} 30... Nc7 $11) 31. Bxf6 $14 Nxf6 32. Ne4 $36 {[%mdl 2048] Strongly threatening Nxf6+. White has good play.} Qd4 33. Nxf6+ Rxf6 34. Re4 $1 {[%cal Re4d4]} Qd5 ({Not} 34... Qxb2 $2 35. Qd7 $1 $18 {[%mdl 512]}) 35. b3 {[%cal Bb2b3,Bb3c4][%mdl 32]} c4 $1 {[%cal Rc4b3]} 36. bxc4 ({Of course not} 36. Rxc4 e4 $17) 36... Qd6 37. Ke2 Rb8 38. Rd1 Rb2 39. Rd2 Rf5 (39... c5 $1 $14) 40. a4 $2 ({Only move:} 40. d4 $18) 40... Qa3 41. Qh4 {Threatens to win with Qd8+.} Rb8 42. d4 $2 {[%mdl 8192] [#]} (42. f3 $14) 42... f3+ $1 {Black mates.} 43. gxf3 Qxf3+ 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.7"]
[White "Vignesh B"]
[Black "Domogaev, Sergey"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1912"]
[BlackElo "2334"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,119,20,43,33,19,33,24,48,37,35,30,31,35,41,47,37,35,73,57,59,53,74,62,57,38,51,47,77,82,101,81,81,83,83,83,90,83,91,91,91,91,91,91,98,93,92,92,107,107,109,69,69,0,108,96,101,98,123,128,128,115,120,120,134,129,158,163,239,176,310,309,294,280,415,413,368,391,439,426,410,402,647,670,643,590,666,642,608,568,1441,1260,2321,1424,1417,1412,1110,950,29961,29960,29971,29972,29972,29972,29972,29975]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 h6 5. c3 d6 6. Bb3 g6 7. O-O Bg7 8. Re1 O-O 9. Nbd2 Nh5 {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack} (9... Re8 10. Nf1 Be6 11. h3 d5 12. Ng3 Qd7 13. Ba4 Nh7 14. d4 exd4 15. Nxd4 Rad8 16. Be3 dxe4 17. Nxc6 bxc6 18. Nxe4 {½-½ (33) Anand,V (2782)-Ponkratov,P (2613) Riadh 2017}) 10. Nf1 a6 11. h3 Be6 $146 {White has an edge.} ({Predecessor:} 11... Kh7 12. g4 Nf4 13. d4 Nxh3+ {1-0 (45) Coman,A (1081)-Botea,D (1675) Calimanesti 2018}) 12. d4 Bxb3 13. Qxb3 exd4 14. cxd4 Nxd4 15. Nxd4 Bxd4 16. Bxh6 Qh4 {[#]} 17. Be3 $1 {[%cal Re3d4]} Bxe3 18. Nxe3 Rab8 19. Rac1 c6 20. Nc4 Rfd8 21. Rcd1 d5 22. exd5 cxd5 23. Ne3 Nf6 24. Nxd5 Nxd5 25. Rxd5 Rxd5 26. Qxd5 $16 {[%mdl 4096] Endgame KQR-KQR} Qf6 27. Qe5 Qxe5 28. Rxe5 {KR-KR} Rc8 29. Re2 Kf8 30. Kh2 Rc5 31. Kg3 Rg5+ 32. Kf3 Rc5 33. Re3 Rc2 34. Re2 Rc5 $1 35. a3 Kg7 36. Ke4 Rg5 37. g3 Rc5 38. Kd4 Rc1 39. h4 Kf6 40. Kd5 Rc7 41. a4 Rc1 (41... Rd7+ $142 42. Kc5 Rc7+ 43. Kb6 Rc4) 42. Re4 a5 (42... Rc2 {keeps fighting.}) 43. Rc4 $18 Rb1 44. Rc2 Re1 (44... Ra1 $142 45. Rc7 Rxa4) 45. Kc5 Re4 46. Kb5 Rb4+ 47. Kxa5 Rb3 48. Rc4 b6+ (48... Rxb2 $142 49. Rb4 Ra2) 49. Ka6 Rxb2 50. Rc6+ Kf5 {and the idea ...Rb4 leaves Black hopeful.} 51. Rxb6 Rxf2 52. Rb3 Kg4 53. a5 f5 54. Kb7 f4 55. gxf4 Rxf4 56. Rb6 Kf5 57. Rb5+ {White mates.} Kf6 58. h5 gxh5 59. Rxh5 Ke6 60. a6 {Accuracy: White = 85%, Black = 35%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.8"]
[White "Vokac, Marek"]
[Black "Wang, Yukun"]
[Result "1/2-1/2"]
[ECO "A12"]
[WhiteElo "2334"]
[BlackElo "1990"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,85,20,41,35,38,33,45,30,48,38,33,33,37,37,29,0,8,0,4,0,33,33,33,26,33,33,33,33,33,33,33,33,33,33,33,33,33,33,33,0,33,33,33,33,33,33,33,33,35,24,27,20,29,20,20,14,21,0,6,3,14,5,10,10,10,0,0,0,10,10,14,0]} 1. Nf3 Nf6 2. c4 c6 3. b3 d5 4. Bb2 g6 5. g3 Bg7 6. Bg2 O-O 7. O-O a5 8. d3 Na6 9. a3 {A11: English Opening: 1...c6} Bg4 10. Nbd2 Bxf3 11. Bxf3 {White is slightly better.} (11. Nxf3 e6 12. Qc2 Qb6 13. Rab1 Rfd8 14. Bc3 Nd7 15. d4 Nc7 16. Rfd1 Ne8 {½-½ (71) Rozum,I (2586)-Kamsky,G (2676) Sochi 2017}) 11... e6 12. Qc2 Nd7 13. Bxg7 Kxg7 14. Qb2+ $146 ({Predecessor:} 14. d4) 14... Qf6 15. Qxf6+ Nxf6 16. d4 Rfd8 17. cxd5 Nxd5 18. Nc4 Nac7 19. Rfc1 h5 20. h4 Ra6 21. e3 Nb5 22. Rc2 Kf8 23. Nb2 Raa8 24. Na4 Ndc7 25. Nc5 Ra7 26. Nd3 Nd6 27. Nc5 Ndb5 28. Be2 Ke7 29. Nd3 Raa8 30. Ne5 Nd6 31. Bd3 Nd5 32. Rac1 Nf6 33. Kg2 Nd7 34. Nxd7 (34. Nc4 {is more complex.} Nxc4 35. bxc4 c5 36. Rb2 cxd4 37. exd4 b6 38. c5) 34... Rxd7 {The position is equal.} 35. Kf3 Ne8 36. Ke2 Nf6 37. Rc5 Nd5 38. f3 Nf6 39. R1c2 Rdd8 40. Rb2 Nd7 41. Rc1 Kd6 42. Rd2 Ke7 43. f4 {Accuracy: White = 50%, Black = 68%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.9"]
[White "Douriet Duany, Alexis"]
[Black "Cernousek, Lukas"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "2212"]
[BlackElo "2447"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,110,10,12,0,12,10,16,12,14,9,18,21,40,43,52,42,45,38,42,50,68,37,93,90,95,107,121,32,43,39,27,2,38,-98,-98,-107,-112,-112,-125,-204,-102,-95,-100,-92,-100,-92,-91,-106,-82,-206,-199,-328,-304,-313,-318,-417,-275,-264,-243,-253,-245,-220,-184,-259,-255,-258,-258,-258,-257,-252,-247,-249,-249,-248,-248,-251,-251,-250,-203,-466,-379,-369,-206,-559,-539,-462,-456,-641,-545,-569,-400,-529,-518,-516,-534,-507,-488,-29991,-29992,-29992,-29993,-29993,-29993]} 1. d4 c5 2. e3 Nf6 3. Nf3 g6 4. dxc5 Qa5+ 5. Nbd2 Bg7 6. Be2 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} O-O 7. a3 Qxc5 8. b4 {The position is equal.} Qb6 9. Bb2 d6 10. O-O Bd7 11. c4 $36 {[%mdl 2048] White has the initiative.} Rc8 12. Qb3 a5 13. Ng5 {aiming for c5.} Qd8 14. c5 d5 15. e4 h6 (15... e6 $14) 16. Nxf7 $1 $16 Kxf7 17. exd5 Kf8 18. Bc4 (18. Rae1 $16) 18... axb4 $14 19. axb4 Rxa1 20. Rxa1 Be8 21. Nf3 (21. Bd4 $14 {keeps the upper hand.}) 21... b5 $17 22. cxb6 Qxb6 23. Bd4 Qc7 $1 {[%cal Rc7c4]} 24. Bc5 (24. Bd3 $17 {was necessary.}) 24... Nfd7 ({Better is} 24... Nbd7 $1 $19 {[%cal Rd7c5]} 25. d6 Nxc5 26. bxc5 exd6) 25. Ra7 Qf4 26. g3 Qc1+ 27. Kg2 {And now d6 would win.} Nxc5 28. bxc5 Rxc5 29. Qxb8 (29. Bd3 $17 Nd7 30. d6 $1 {[%mdl 512]}) 29... Qxc4 $19 ({Don't go for} 29... Rxc4 $2 {[#]} 30. Qd8 $1 $18 {[%mdl 512]}) 30. Ra8 (30. d6 $142 exd6 31. Rxg7 (31. Qxd6+ $2 Kg8 $19) 31... Kxg7 32. Qxe8) 30... Qb5 31. Qf4+ Kg8 32. Qe4 Qd7 33. Qxg6 Rc8 34. Rxc8 Qxc8 35. Qe4 Qd7 {Strongly threatening ...Bf7.} 36. Ne5 (36. Nh4 $142) 36... Bxe5 37. Qxe5 Bf7 38. Qb8+ Kh7 39. Qb1+ Bg6 40. Qd1 Be4+ 41. f3 Bxd5 ({But not} 41... Qxd5 42. Qe2 $17) 42. Qd3+ Kg7 43. Qc3+ Kg8 44. h4 $2 (44. Qe5 {was called for.}) 44... Qe6 {Hoping for ...Qe2+.} 45. Kf2 Qh3 (45... Qf5 $142 46. Qe3 h5) 46. Qe5 $2 (46. Qd3 Qe6 47. g4) 46... Qh2+ 47. Ke3 Qg1+ 48. Kf4 (48. Kd2 $142 Qf2+ 49. Kd3 Qxf3+ 50. Kd2) 48... Qc1+ 49. Kg4 Qc5 50. Qb8+ Kh7 {( -> ...Be6+)} 51. Qb1+ Kg7 52. Qb2+ Kf7 {White must now prevent ...Qe3.} 53. Qh8 (53. Qd2 $19 Be6+ 54. Kf4) 53... Qc4+ {Black mates.} 54. Kh3 Qf1+ 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.10"]
[White "Laxman, R.R."]
[Black "Riha, Vojtech"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2441"]
[BlackElo "2247"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,89,25,32,22,25,17,30,0,0,6,7,7,39,21,10,18,27,22,22,-33,0,0,11,22,18,26,24,24,28,20,19,0,3,12,56,56,93,93,96,106,150,148,135,76,76,76,76,76,76,76,76,76,76,76,76,76,76,76,76,76,76,76,90,83,90,65,65,65,65,35,39,0,0,0,29979,29980,29976,29979,29984,29985,29990,29991]} 1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. e3 Bg7 5. b4 a5 (5... c6 6. Bb2 a5 7. b5 O-O 8. a4 Bf5 9. c4 Ne4 10. Qb3 Nxd2 11. Nxd2 Nd7 12. cxd5 cxd5 13. Qxd5 {1-0 (32) Aronian,L (2775)-Gareyev,T (2598) Moscow 2019}) 6. b5 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} c5 7. bxc6 Nxc6 8. Bb5 {White has an edge.} O-O 9. O-O Ne8 $146 ({Predecessor:} 9... Bf5 10. Bxc6 bxc6 11. Ba3 Rb8 12. Ne5 Qc7 13. h3 {1-0 (110) Grachev,B (2626)-Zakhartsov,V (2486) St Petersburg 2018}) 10. Ba3 Bd7 11. Rb1 Nc7 12. Bd3 Rb8 13. Nb3 b5 14. Nc5 (14. h3 $11) 14... Bc8 15. c3 Re8 16. Qe2 {[%cal Rd3b5]} b4 17. cxb4 axb4 18. Bb2 Qd6 {Threatening ...e5.} 19. Rfc1 $36 {[%mdl 2048] White is more active.} Bg4 20. Qc2 {Black should prevent Nb3.} Bxf3 21. gxf3 e5 {[%cal Re5d4]} 22. Na4 {Played: Nc5-d7} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.11"]
[White "Quesada Vera, Liordis"]
[Black "Wiley, Tom E"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2386"]
[BlackElo "2170"]
[Annotator "TA"]
[PlyCount "240"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,240,-27,0,-11,0,-13,0,-8,0,-17,-5,-16,0,0,0,-31,-25,-28,-25,-39,-20,-40,-30,-36,-34,-39,-29,-37,-22,-25,-27,-40,-38,-72,-67,-71,-58,-65,-64,-65,-64,-71,-44,-53,-42,-65,-45,-57,-42,-45,-41,-54,-44,-70,-25,-22,-25,-24,-24,-29,-22,-28,-22,-28,-25,-42,-33,-47,-27,-60,0,-54,0,-51,-28,-29,-2,-44,0,-52,-2,-14,0,0,0,0,0,0,0,0,23,0,0,0,0,0,0,-17,0,0,0,0,31,0,0,0,0,0,4,-57,-17,-54,0,-17,0,0,41,0,0,0,0,0,0,-74,-77,-156,-170,-152,-60,-68,0,0,25,0,0,0,28,0,0,0,57,57,57,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,57,0,0,0,57,57,68,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-418,0,0,0,-83,-47,-77,0,0,0,0,0,0,0,0,0,-43,-43,-60,0,0,0,0,0,0,0,0,0,0,0,-29976,-29976,-29996,-29996,-29996,-254,-29997,0]} 1. e4 e6 2. c4 d5 3. cxd5 exd5 4. Qa4+ c6 5. exd5 Qxd5 6. Nc3 {C00: French: Unusual White 2nd moves} Qd6 $146 (6... Qd8 {seems wilder.} 7. d4 Nf6 8. Bd3 Bd6 9. Nf3 h6) ({Predecessor:} 6... Qd8 7. Nf3 Nf6 8. d4 Be7 9. Bd3 O-O {1-0 (23) Gorbatov,A (2375)-Aliane Diez,A (2099) San Sebastian 2016}) 7. Nf3 Nf6 8. d4 {The position is equal.} Nbd7 {[%cal Bb8d7,Bd7b6,Bb6d5,Bd5b4][%mdl 32]} 9. Be2 Be7 10. O-O O-O 11. Qc2 Nb6 12. Rd1 Bg4 13. Ne5 Bxe2 14. Nxe2 Nbd5 15. Ng3 Rfe8 16. Bg5 Bf8 17. Nf5 Qe6 18. Re1 Nb4 19. Qb1 Nfd5 20. a3 {aiming for Nf3.} Na6 21. b4 f6 22. Nf3 Qd7 23. Bd2 Rxe1+ 24. Nxe1 Nac7 25. Ng3 Ne6 26. Nf3 Ndc7 27. Be3 Nb5 28. Qb2 Rd8 {[%cal Rb5d4]} 29. Ne2 Nbc7 30. h3 Nd5 31. Ng3 a6 32. Ne4 Qf7 33. Nc5 Bxc5 34. bxc5 Rd7 35. Re1 Qg6 36. Qb3 Kf8 37. Kh2 Re7 38. Bd2 Qf7 (38... Qf5 {feels hotter.} 39. Qb1 Qxb1 40. Rxb1 g5 41. g4 Nef4) 39. Qc2 Qg6 40. Qb3 Qf7 (40... Nef4 $15 41. Bxf4 Nxf4) 41. a4 (41. Qc2 $11) 41... Qe8 42. Qd3 Qg6 43. Qc4 Qe8 (43... Qf5 {keeps more tension.} 44. Kg1 h6 45. Qb3 g5 46. Qc4 Qh7) 44. Rb1 (44. Qd3 $11) 44... Nd8 45. Rb3 Nf7 46. Qd3 g6 47. Qb1 Qd7 48. Kg1 Kg7 49. Be3 f5 50. Bd2 f4 51. Kf1 g5 52. Qd3 Qe6 53. Kg1 h6 54. Qb1 Qd7 55. Ba5 Nf6 56. Bc3 {Threatens to win with Ne5.} (56. Ne5 $5 Nxe5 57. dxe5 $11) 56... Nd5 57. Bb2 Kf6 58. Ba1 Qf5 59. Qd1 ({White should play} 59. Rxb7 $11 Qxb1+ 60. Rxb1) 59... Rd7 60. Qe2 Re7 (60... h5 $15) 61. Ne5 Nxe5 62. dxe5+ Ke6 63. Bd4 Rh7 64. Qb2 Qf7 65. Qb1 Rg7 66. Kh2 (66. g4 $11) 66... h5 $17 67. Qd1 (67. f3 $142) 67... g4 68. h4 {[#]} Qe7 (68... g3+ $1 $17 {[%mdl 512]} 69. Kh1 (69. fxg3 fxg3+) 69... Qf5) 69. g3 $15 f3 (69... Qf8 $15) 70. Qd2 Rg6 71. Qc2 Rg7 $1 72. Qc1 Rg6 73. Rb2 (73. Be3 $5) 73... Qf7 74. Kg1 Qe7 ({Better is} 74... Qh7 $11) 75. Qc4 Qf7 76. Be3 (76. Rb1 $14) 76... Rg7 $1 $11 77. Bh6 Rh7 $1 {[%cal Rh7h6]} 78. Bg5 Qf5 79. Bf6 Rd7 80. Kh2 Qg6 81. Rb4 Rf7 82. Qb3 Qh7 83. Kg1 Kf5 (83... Qg6 $11) 84. Qb1+ Ke6 85. Qb3 Kf5 86. Rd4 Ke6 87. Qa2 (87. Rd1 $14) 87... Rd7 88. Kh2 Qg6 89. Qb3 Qh7 90. Bg5 Qg6 91. Rf4 {Strongly threatening Rf6+.} Rf7 $1 92. Rb4 Qh7 93. Be3 Rd7 94. Bc1 Rf7 95. Qc4 Qg6 96. a5 Rd7 97. Qb3 Qh7 98. Bg5 Rf7 99. Rd4 Rd7 100. Bf6 Qg6 101. Qa2 Qh7 102. Rf4 $2 {[%mdl 8192]} (102. Qb3 $11 {and White is okay.}) 102... Rf7 $2 (102... Qd3 $1 $19 {[%cal Rd3f1] ( -> ...Qf1)} 103. Bg5 Rf7 104. Rxf7 Kxf7 105. e6+ Kxe6) 103. Qb3 Qg6 104. Bg5 (104. Kg1 $11 {keeps the balance.}) 104... Rxf4 $1 $17 105. gxf4 {[#]} Qf7 ({Black should try} 105... Qe4 $1 $17 {[%cal Re4e2]} 106. Qxb7 {[%mdl 64] Double Attack} Nxf4 107. Qe7+ Kd5 108. Qf7+ Ne6 109. Qd7+ Kxe5) 106. Kg3 $11 Kf5 107. Bf6 {Threatening mate with Qb1+.} Ke6 $1 108. Bg5 Kf5 109. Kh2 Ke6 110. Kg1 Qh7 {...Qe4 is the strong threat.} 111. Kh2 Qf7 (111... Qe4 $1 $15 112. Qxb7 {[%mdl 64] Double Attack} Nxf4 113. Qe7+ Kd5 114. Qf7+ Ne6 115. Qd7+ Kxe5) 112. Kg3 Qh7 113. Qb2 Qf7 114. Qb1 Nc3 115. Qb3+ Nd5 116. Kh2 Qh7 117. Bf6 $2 {[%mdl 8192]} (117. Kg3 $11) 117... Qe4 118. Qxb7 Qxf4+ 119. Kh1 Qc1+ {[%mdl 64] Double Attack} 120. Kh2 {[#] And now Qc8+ would win.} Qf4+ $2 {Accuracy: White = 50%, Black = 62%.} (120... g3+ $1 {[%mdl 512] mates} 121. fxg3 Qd2+ {[%mdl 64] Double Attack} 122. Kh3 Qg2#) 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.12"]
[White "Neuman, Petr"]
[Black "Svanda, Ondrej"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "2371"]
[BlackElo "2257"]
[Annotator "ChessBase"]
[PlyCount "89"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:53]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:05]} e6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:05]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:04]} Nc6 {[%emt 0:00:00]} 5. Nb5 {[%emt 0:01:21]} d6 {[%emt 0:02:09]} 6. c4 {[%emt 0:00:56]} a6 {[%emt 0:01:41]} 7. N5c3 {[%emt 0:02:35]} Nf6 {[%emt 0:00:57]} 8. Be2 {[%emt 0:00:18]} Be7 {[%emt 0:00:08]} 9. O-O {[%emt 0:00:18]} O-O {[%emt 0:01:19]} 10. Be3 {[%emt 0:00:32]} b6 {[%emt 0:01:40]} 11. Nd2 {[%emt 0:17:56]} Nd7 {[%emt 0:05:41]} 12. Rc1 {[%emt 0:01:37]} Bb7 {[%emt 0:01:28]} 13. a3 {[%emt 0:00:13]} Bf6 {[%emt 0:07:35]} 14. Re1 {[%emt 0:05:34]} Rc8 {[%emt 0:04:24]} 15. Bf1 {[%emt 0:02:35]} Qc7 {[%emt 0:19:02]} 16. f4 {[%emt 0:06:49]} Bd4 {[%emt 0:07:02]} 17. Qe2 {[%emt 0:03:44]} Bxe3+ {[%emt 0:03:11]} 18. Qxe3 {[%emt 0:00:13]} Qb8 {[%emt 0:00:27]} 19. b4 {[%emt 0:01:08]} Ba8 {[%emt 0:03:56]} 20. Red1 {[%emt 0:02:03]} Nf6 {[%emt 0:01:37]} 21. Be2 {[%emt 0:08:18]} Rcd8 {[%emt 0:04:03]} 22. Nb3 {[%emt 0:02:51]} Rfe8 {[%emt 0:02:21]} 23. Bf3 {[%emt 0:02:39]} Re7 {[%emt 0:06:56]} 24. g4 {[%emt 0:07:23]} h6 {[%emt 0:03:28]} 25. h4 {[%emt 0:00:37]} d5 {[%emt 0:08:35]} 26. cxd5 {[%emt 0:15:50]} exd5 {[%emt 0:00:02]} 27. e5 {[%emt 0:00:05]} d4 {[%emt 0:00:06]} 28. Nxd4 {[%emt 0:01:10]} Nxd4 {[%emt 0:00:06]} 29. Rxd4 {[%emt 0:00:14]} Rxd4 {[%emt 0:02:41]} 30. Qxd4 {[%emt 0:00:15]} Bxf3 {[%emt 0:01:54]} 31. exf6 {[%emt 0:00:06]} gxf6 {[%emt 0:00:07]} 32. Kf2 {[%emt 0:03:12]} Bb7 {[%emt 0:02:21]} 33. Rd1 {[%emt 0:03:46]} Re6 {[%emt 0:03:11]} 34. Qd8+ {[%emt 0:03:10]} Qxd8 {[%emt 0:00:02]} 35. Rxd8+ {[%emt 0:00:06]} Kg7 {[%emt 0:00:23]} 36. Ne2 {[%emt 0:00:06]} Re4 {[%emt 0:05:26]} 37. Rd4 {[%emt 0:01:48]} f5 {[%emt 0:01:38]} 38. g5 {[%emt 0:03:18]} hxg5 {[%emt 0:01:41]} 39. fxg5 {[%emt 0:00:42]} a5 {[%emt 0:01:36]} 40. h5 {[%emt 0:04:30]} axb4 {[%emt 0:00:26]} 41. axb4 {[%emt 0:30:14]} Re7 {[%emt 0:14:20]} 42. Rd6 {[%emt 0:00:00]} Re4 {[%emt 0:05:11]} 43. Rd4 {[%emt 0:00:00]} Re7 {[%emt 0:00:13]} 44. Ng3 {[%emt 0:00:00]} Be4 {[%emt 0:02:23]} 45. Rxe4 {[%emt 0:00:00]} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.13"]
[White "Priehoda, Vitezslav"]
[Black "Pushkov, Nikolai"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2341"]
[BlackElo "2239"]
[Annotator "TA"]
[PlyCount "153"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,153,14,25,18,23,18,29,22,33,14,25,16,19,26,16,0,10,9,71,13,37,8,25,15,15,0,12,0,3,0,24,23,33,22,26,18,14,15,20,0,12,0,15,0,10,8,44,43,87,89,126,126,118,118,118,118,108,78,106,83,93,56,77,48,72,62,66,51,62,0,0,0,20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,113,104,117,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bf4 O-O 6. e3 b6 7. Rc1 c5 8. dxc5 {D37: Queen's Gambit Declined: 5 Bf4} (8. cxd5 Nxd5 9. Nxd5 exd5 10. Be2 c4 11. O-O Nc6 12. e4 b5 13. exd5 Nb4 14. d6 Bxd6 15. Bxd6 Qxd6 16. a3 Nd5 {½-½ (40) Miton,K (2624)-Arizmendi Martinez,J (2571) Legnica 2013}) 8... bxc5 9. Be2 Bb7 10. O-O {White has an edge.} Nbd7 11. h3 Qb6 $146 ({Predecessor:} 11... Nb6 12. cxd5 exd5 13. Qb3 h6 14. Rfd1 Qe8 15. a4 c4 {1-0 (44) Prasetyo,S (2044)-Pu,H (1616) Sanya 2017}) 12. cxd5 Nxd5 13. Nxd5 exd5 14. Qc2 h6 15. Rfd1 Qe6 (15... Nf6 $11) 16. Bd3 (16. b4 $16) 16... Nf6 $11 17. Bf5 Qb6 18. Ne5 Rfd8 19. b3 Bc8 20. Bxc8 Raxc8 21. Qf5 Qe6 22. Ng6 {[#] And now Qxe6 would win.} Bf8 $1 23. Qxe6 fxe6 24. g4 Kf7 25. Nxf8 Kxf8 26. f3 Kf7 27. Be5 Nd7 28. Bb2 Nb6 29. Kf2 c4 30. Bd4 cxb3 31. axb3 Rxc1 32. Rxc1 $14 {[%mdl 4096] Endgame KRB-KRN} Rd7 33. Ke2 Rb7 34. Kd2 g6 35. Ra1 Nc8 36. Kc2 Ke7 37. Bg7 h5 38. gxh5 gxh5 39. Bd4 Kd6 40. f4 Kc6 41. Rg1 (41. Ra6+ $14 Nb6 42. Ra5) 41... Nd6 $11 42. Rg6 Re7 43. Rh6 Nf5 44. Rxh5 Nxd4+ 45. exd4 {KR-KR} Rg7 46. Rg5 Rh7 47. Rg3 Rh4 48. Rf3 Kb5 49. Kd2 Kb4 50. Ke2 a5 51. Kf2 Rh6 52. Kg3 Rg6+ 53. Kh4 Rg1 54. Re3 Rd1 55. Rxe6 {Hoping for Re3.} Rxd4 56. Kg5 {Strongly threatening f5.} Kxb3 (56... Rd1 $11) 57. f5 $16 {Black must now prevent f6.} Rd1 {[#]} 58. f6 (58. Re3+ $1 $16 Kc4 59. Rf3 Rg1+ 60. Kh6) 58... Rf1 $11 {The position is equal.} 59. Re5 {Threatens to win with Rf5.} d4 60. Rxa5 d3 61. Rd5 Kc2 62. h4 {h5 is the strong threat.} d2 63. h5 Rg1+ 64. Kh6 Rf1 65. Kg6 Rg1+ 66. Kh7 Rf1 67. Kg7 Rg1+ 68. Kf8 Rh1 69. f7 Rxh5 $1 70. Rxh5 {White wants to mate with Rc5+.} d1=Q {KQ-KR} 71. Rc5+ Kb3 72. Ke7 Qe1+ 73. Kf6 Qh4+ 74. Rg5 Qh6+ 75. Rg6 Qf8 76. Rg8 Qd6+ 77. Kg7 {Accuracy: White = 60%, Black = 65%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.14"]
[White "Nasshan, Dennis"]
[Black "Pniaczek, Marek"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2307"]
[BlackElo "2145"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,119,21,0,12,22,19,0,47,49,58,45,56,54,50,48,78,20,16,19,36,24,35,-23,-29,-32,-26,-24,44,52,41,51,41,41,41,44,44,52,52,49,35,43,79,79,79,79,79,79,79,79,79,80,275,80,88,0,279,0,83,66,80,88,147,0,67,0,127,145,165,165,165,165,165,165,165,165,171,171,171,171,171,8,8,0,169,180,563,563,522,449,890,890,1895,1884,1889,1878,1860,1840,1795,1655,1371,1147,1085,1041,29984,29985]} 1. d4 Nf6 2. Nf3 g6 3. Bf4 d6 4. h3 Bg7 5. e3 O-O 6. Be2 c5 7. c3 cxd4 8. exd4 Nc6 9. O-O Nd5 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} 10. Bh2 e5 11. Nbd2 {[#]} Qe7 $146 {The position is equal.} ({Predecessor:} 11... Re8 12. Nc4 Nf4 13. dxe5 dxe5 14. Bxf4 exf4 15. Re1 Qf6 16. Qb3 Rb8 17. Rad1 Be6 {½-½ (41) Inarkiev,E (2693)-Christiansen,J (2558) Douglas 2019}) 12. Re1 Rd8 13. Bb5 f6 14. Qb3 Qf7 $1 15. Rad1 a6 16. Bf1 (16. Bxc6 $1 $16 bxc6 17. c4) 16... b5 $11 17. a4 Na5 18. Qa3 Be6 19. c4 (19. Ne4 $14) 19... Nxc4 20. Nxc4 bxc4 21. Bxc4 a5 ({Black should try} 21... Rdc8 $11 22. Qa2 Nc7) 22. dxe5 $14 dxe5 23. Bxe5 fxe5 24. Ng5 Qf4 $1 {[%cal Rf4g5]} 25. Nxe6 Qxc4 26. Nxd8 Rxd8 27. Qf3 Rd7 28. Rd2 Nb6 29. Rxd7 Nxd7 30. Qa8+ Bf8 31. Qxa5 Nc5 32. Rxe5 Nxa4 33. Qd2 Qb3 $2 (33... Nc5 $16 {keeps fighting.}) 34. Re2 $2 (34. Re3 $1 $18 {[%cal Re3b3]} Qb7 35. Rf3) 34... Nc5 $16 35. Re5 $2 (35. Re8 $16) 35... Na4 $1 $18 36. Re2 $2 (36. Re3 $1 $18 {[%cal Re3b3] is the precise move to win.} Qb7 37. Rf3) 36... Nc5 $1 $16 37. Qc2 Qd5 38. Rd2 Qe6 (38... Qb7 $142) 39. Re2 (39. b4 $1 $16 {[%cal Rb4c5]} Nd7 40. b5) 39... Qd5 $14 40. Rd2 (40. Re3 $14) 40... Qe6 $1 $16 41. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Na6 42. b5 $1 $36 {[%mdl 2048] Black is under strong pressure.} Qe1+ 43. Kh2 Qe5+ 44. g3 $1 Qxb5 45. Qa2+ Kg7 46. Qe6 $1 {[%mdl 1024] Black must now prevent Rd7+. White has strong compensation.} (46. Rd8 Qf5 $11) 46... Nc5 47. Qe5+ Kg8 48. Qd5+ $2 (48. Rd8 $1 $18 Qb6 49. Rc8 (49. Qd4 Qc7 $11)) 48... Kg7 $1 $11 49. Qe5+ $2 (49. Ra2 $11 Qb6 50. Qd4+ Kh6 51. h4) 49... Kg8 $18 {[#]} 50. Rd8 $1 Qc6 $2 {[#]} (50... Qb6 {is more resistant.} 51. Rc8 (51. Qd4 Qc7 $14) 51... h6) 51. Qe7 $1 {[%csl Ge7][%cal Rd8f8]} Ne6 52. Re8 Qxe8 (52... h5 $142 53. Qxe6+ Qxe6 54. Rxe6 Kf7) 53. Qxe8 Nc5 54. h4 Kg7 55. h5 gxh5 56. Qxh5 Be7 57. Qe5+ Kf7 58. Qh8 Kg6 59. Qg8+ Kh6 60. Kh3 {Accuracy: White = 83%, Black = 65%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.15"]
[White "Pavlidou, Ekaterini"]
[Black "Siddharth, Jagadeesh"]
[Result "1-0"]
[ECO "E46"]
[WhiteElo "2160"]
[BlackElo "2301"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,47,8,5,-8,18,13,0,0,46,41,50,31,48,40,37,39,162,63,134,60,208,52,83,64,650,642,629,619,627,563,29996,29997,29997,29998]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 b6 6. Nf3 Bb7 7. Bd3 d5 8. cxd5 exd5 9. Rc1 {E52: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5 6 Bd3 b6} (9. Ne5 Bd6 10. O-O c5 11. Rc1 Nc6 12. Ng4 Nd7 13. Nh6+ gxh6 14. Qg4+ Kh8 15. Qf5 Nf6 16. Nxd5 Nxd4 17. Qxf6+ Qxf6 18. Nxf6 {½-½ (40) Wei,Y (2725)-Karjakin,S (2754) Jerusalem 2019}) 9... a6 10. O-O Nbd7 11. Ne5 {The position is equal.} Bd6 12. f4 Ne4 13. Be1 Qe7 14. Qf3 $146 {[%cal Rc3e4]} ({Predecessor:} 14. Qc2 f5 15. Qb3 Ndf6 16. Bxe4 fxe4 17. Bh4 Kh8 18. Ne2 {1-0 (41) Janzelj,T (2446)-Neff,G (2118) Deutschlandsberg 2019}) 14... Ndf6 15. Bh4 h6 (15... Qe6 $14) 16. Rc2 (16. Qh3 $18) 16... c5 (16... Qe8 $14) 17. g4 ({White should try} 17. Bxe4 $16 dxe4 18. Qh3 cxd4 19. Ng4) 17... Qc7 {[#]} (17... cxd4 $14 18. exd4 Rac8) 18. g5 $2 ({White should play} 18. Bxf6 $1 $18 {Hoping for g5.} gxf6 {[#]} 19. Nc4 $1 {[%mdl 512]}) 18... hxg5 $14 19. fxg5 (19. Bxg5 {looks sharper.} Bxe5 20. dxe5 Nxg5 21. fxg5 Ne4 22. Qh5) 19... Bxe5 $4 {[%mdl 8192]} (19... Nh7 $14) 20. gxf6 $18 Bxf6 21. Bxf6 Nxf6 {[#]} 22. Qxf6 $3 {[%mdl 512] Threatening mate with Rg2!} gxf6 23. Rg2+ Kh8 24. Rf5 {Accuracy: White = 43%, Black = 13%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.15"]
[Round "7.16"]
[White "Chyzy, Jakub"]
[Black "Balinski, Damian"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2291"]
[BlackElo "2139"]
[Annotator "RC"]
[PlyCount "71"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 c6 5. Be3 b5 6. Qd2 Nbd7 7. g4 Nb6 8. h4 h5 9. g5 Nfd7 10. d5 c5 11. Bxb5 a6 12. Be2 Ne5 13. b3 Bg7 14. Nh3 a5 15. a4 O-O 16. Rd1 Ba6 17. O-O Ng4 18. fxg4 Bxc3 19. Qxc3 Bxe2 20. gxh5 Bxd1 21. Rxd1 Qc8 22. Nf2 Nd7 23. Bf4 Rb8 24. Ng4 Rb4 25. Qf3 Rb7 26. Rf1 c4 27. Nh6+ Kh7 28. Bg3 f6 29. hxg6+ Kxg6 30. Nf5 Ne5 31. Bxe5 dxe5 32. h5+ Kf7 33. g6+ Kg8 34. g7 Rf7 35. Qg4 Qxf5 36. Qxf5 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.1"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Vignesh B"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2491"]
[BlackElo "1912"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,77,7,7,18,0,0,0,16,0,1,-1,0,0,0,0,12,30,17,0,34,17,112,109,111,103,108,109,112,107,116,106,121,111,110,111,160,169,157,119,219,222,216,164,238,193,299,274,540,503,1102,1115,1079,999,29976,29977,29976,29958,29991,29992]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. O-O O-O 6. b3 c5 7. Bb2 Nc6 8. e3 b6 9. Nc3 dxc4 10. bxc4 Bb7 11. Qe2 Qc8 {A14: English Opening: 1...e6 with b3 by White} (11... Qc7 12. Rac1 a6 13. Rfd1 Na5 14. d3 Rfd8 15. h3 Rab8 16. g4 Ne8 17. a4 Bc6 18. Ne1 Bf6 19. Ra1 Rd7 {½-½ (43) McShane,L (2682)-Kovalev,V (2661) Douglas 2019}) 12. Ne1 Rd8 13. f4 Na5 {The position is equal.} 14. Rd1 Bxg2 15. Nxg2 a6 $146 ({Predecessor:} 15... Qd7 16. d3 a6 17. a4 Rac8 18. g4 Rc6 19. g5 {½-½ (30) Harika,D (2515)-Khademalsharieh,S (2450) Abu Dhabi 2016}) 16. a4 Nc6 {[%cal Ba5c6,Bc6b4,Bb4d3][%mdl 32]} 17. g4 Nb4 18. g5 Ne8 19. h4 Nd3 20. Ba1 b5 (20... Ra7 $11) 21. axb5 $16 axb5 22. Nxb5 Qc6 23. Ne1 Qe4 24. Nxd3 Rxd3 25. Qf3 Qxf3 26. Rxf3 Ra4 27. Bc3 Nd6 28. Nxd6 Rxd6 29. Kf1 g6 {[#]} (29... Rda6 $16 {was necessary.}) 30. h5 $1 $18 {[%mdl 512]} gxh5 31. Rh3 Bf8 (31... Rxc4 $142 32. Ke2 Rxc3 33. dxc3 Rxd1 34. Kxd1 h6 35. gxh6 (35. Rxh5 hxg5 36. fxg5 Kg7 $16) 35... h4) 32. Rb1 ({Less strong is} 32. Rxh5 Bg7 $16) 32... Rd8 (32... e5 $142) 33. Ke2 (33. Rxh5 Bg7 $16) 33... Bg7 $2 {[#]} (33... e5 {was worth a try.} 34. Bxe5 Rxc4) 34. Bf6 $1 {[%cal Rf6d8]} Rd7 (34... Rda8 $142 35. Rxh5 Bxf6) 35. Rxh5 Ra2 36. Kf3 {Hoping for Rb8+.} Rdxd2 37. Rb8+ {White mates.} Bf8 38. Be7 f5 39. gxf6 {Accuracy: White = 77%, Black = 26%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.2"]
[White "Budnikov, Oleg"]
[Black "Lalic, Bogdan"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2432"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,50,19,27,8,2,0,27,-25,-18,-22,-29,-31,-10,-20,-12,-8,0,-36,-38,-52,-36,-44,-39,-45,-43,-64,-59,-59,-46,-52,-29,-58,-34,-81,-82,-109,0,-50,-47,-74,-73,-100,0]} 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 g6 5. O-O Bg7 6. Nc3 {A15: English Opening: 1...Nf6} O-O 7. Re1 (7. d4 e6 8. Bf4 d6 9. Qd2 Re8 10. Rad1 Nbd7 11. Bh6 Bh8 12. Bg5 Qe7 13. Rfe1 Qf8 14. e4 e5 15. dxe5 dxe5 {0-1 (48) Ruck,R (2530)-Mamedyarov,S (2772) Moscow 2019}) 7... Ne4 8. Qc2 (8. Nxe4 $142 Bxe4 9. d3) 8... Nxc3 $11 9. dxc3 $146 ({Predecessor:} 9. bxc3 c5 10. h4 Nc6 11. e4 d6 12. h5 Qd7 13. d3 Ne5 {0-1 (43) Li,D (2479)-Liang,A (2558) Tarvisio 2017}) 9... d6 10. h4 Nd7 {[%cal Bb8d7,Bd7f6,Bf6h7,Bh7g5,Bg5e6,Be6c5][%mdl 32]} 11. h5 Nf6 12. hxg6 hxg6 13. e4 e5 14. Nh4 Nh7 15. Be3 Ng5 16. Rad1 Qe7 17. Bc1 Rfe8 18. Qd2 Ne6 19. Nf3 a5 20. Qc2 Nc5 21. Bg5 Bf6 22. Bc1 Bg7 (22... Kg7 $17) 23. b3 Rf8 24. Nh4 Bf6 25. Nf3 Bg7 {Accuracy: White = 36%, Black = 59%.} (25... Kg7 $17) 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.3"]
[White "Peng, Hongchi"]
[Black "Low, Zhen Yu Cyrus"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2362"]
[BlackElo "2415"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,112,0,28,-68,-56,-56,-79,-69,-54,-47,-43,-37,-49,-64,-68,-85,-63,-81,-76,-69,-70,-77,-51,-111,-90,-94,-87,-106,-86,-93,-72,-60,-79,-83,-86,-120,-120,-142,-137,-161,-74,-133,-131,-132,-124,-147,-157,-312,-304,-423,-419,-391,-418,-457,-451,-448,-438,-411,-238,-226,-239,-229,-226,-226,-203,-227,-218,-289,-284,-274,-281,-265,-268,-270,-267,-278,-249,-250,-250,-249,-242,-246,-241,-260,-215,-440,-396,-529,-529,-492,-455,-675,-560,-669,-606,-5393,-5181,-1584,-1506,-29978,-29979,-29979,-29980,-29974,-29975]} 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. a3 Nc6 (5... Bxc5 6. Qg4 Ne7 7. Bd3 O-O 8. Nf3 f5 9. exf6 Rxf6 10. Qh4 h6 11. O-O Nbc6 12. c4 Qf8 {1-0 (32) Karjakin,S (2754)-Wei,Y (2725) Jerusalem 2019}) 6. b4 {B12: Caro-Kann: Advance Variation} (6. Nf3 $11) 6... a5 $15 7. b5 {[%cal Bb4b5,Bb5c6][%mdl 32]} Nxe5 8. Bb2 {Black is better.} Nd7 9. c6 bxc6 10. bxc6 Ndf6 $146 ({Predecessor:} 10... Nb8 11. Bb5 Qb6 12. a4 Nxc6 {½-½ (33) Tadic,S (2267)-Popovic,M (2326) Belgrade 2019}) 11. Bb5 {Strongly threatening c7+.} Qb6 12. Qe2 Bc5 13. a4 Ne7 14. Nf3 Nxc6 15. O-O O-O 16. Bxf6 (16. Nbd2 $15) 16... gxf6 $17 17. c4 dxc4 18. Nbd2 Bb7 19. Rac1 Ne7 20. Nxc4 Qc7 21. Ne3 Rac8 22. Rc4 Ng6 23. Ng4 Qe7 24. Qb2 {[#]} e5 (24... Kg7 $1 $19 {and Black stays clearly on top.} 25. Rd1 Rfd8 26. Rxd8 Rxd8) 25. Rd1 (25. Nh4 $142) 25... Rfd8 26. Rxd8+ Rxd8 27. Qc2 Bb6 28. Bc6 $2 {[#]} (28. Rc3 $17) 28... Bc8 $1 $19 {[%cal Rc8g4] Hoping for ...Bxg4.} 29. Nh6+ Kg7 30. Be4 Qd6 {( -> ...Qd1+)} 31. h3 Qd1+ ({Less strong is} 31... Kxh6 32. Rxc8 Rxc8 33. Qxc8 $17) 32. Qxd1 Rxd1+ 33. Kh2 Bd7 (33... Kxh6 $2 34. Rxc8 Ra1 35. Rc4 $19) (33... Ne7 $142 34. Ng4 Be6) 34. Nf5+ Bxf5 35. Bxf5 Bxf2 36. g3 Ne7 37. Bc2 Rc1 {aiming for ...e4!} 38. Kg2 Be3 39. Bd3 Rxc4 40. Bxc4 {[%mdl 4096] Endgame KBN-KBN} e4 41. Ne1 f5 42. Nc2 Bc5 43. Na1 Kf6 44. Nb3 Bb6 45. Nd2 Nc6 46. g4 Be3 47. Nf1 $2 (47. Nb3) 47... Bf4 48. gxf5 {White hopes to continue with Bd5.} Ne5 49. Bd5 Kxf5 50. h4 (50. Kf2 $142 Nd3+ 51. Ke2) 50... f6 51. Bg8 Kg6 52. Ng3 Bxg3 53. Kxg3 e3 54. Bb3 e2 {Black mates.} 55. Bc2+ Kh5 56. Kf2 {[#]} Nf3 $1 {[%mdl 512] Accuracy: White = 44%, Black = 85%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.4"]
[White "Wang, Yukun"]
[Black "Stankovic, Milos"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1990"]
[BlackElo "2466"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,104,0,-13,0,0,0,0,0,0,0,0,0,0,0,-2,-18,-10,-35,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-5,0,0,0,-15,0,0,0,-29,-43,-96,-64,-174,-173,-157,-162,-157,-128,-190,-190,-189,-185,-247,-247,-246,-245,-243,-241,-241,-240,-240,-222,-212,-165,-149,-134,-172,-129,-142,-144,-199,-197,-172,0,-301,-301,-281,-277,-268,-268,-5703,-5703,-5703,-1536]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 g6 6. h3 Nf6 7. Nf3 Bf5 8. Bxf5 gxf5 9. Bf4 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} e6 10. Qb3 (10. Ne5 Rg8 11. O-O Bd6 12. Nd2 Qc7 13. Re1 O-O-O 14. Rc1 Bxe5 15. Rxe5 Qd7 16. Re1 Rg6 {0-1 (46) Malakhov,V (2686)-Esipenko,A (2564) Riadh 2017}) 10... Qd7 11. Ne5 {The position is equal.} Nxe5 12. Bxe5 Be7 13. g4 {g5 is the strong threat.} Rg8 14. f3 Qc6 $146 ({Predecessor:} 14... h5 15. gxf5 Rg2 16. Na3 Rc8 {½-½ (53) Rabl,J (2220)-Messner,H Wuerttemberg 1996}) 15. Na3 {[%cal Bb1a3,Ba3b5,Bb5d4][%mdl 32]} Nd7 16. Nb5 {Black must now prevent Nc7+.} Nxe5 17. dxe5 a6 18. Nd4 {[%mdl 64] [#] Double Attack} Bh4+ 19. Kd2 Qc7 20. f4 O-O-O 21. Rag1 Bf2 22. Rg2 Bxd4 $1 23. cxd4 {Hoping for Rc1.} Kb8 24. Rc1 Qa5+ 25. Kd1 fxg4 26. hxg4 Rc8 27. Rxc8+ Rxc8 28. Rc2 Rxc2 (28... Rg8 {seems wilder.} 29. g5 h6 30. Rc6 Ka7 31. Rd6 hxg5 32. Rd7 Qb6) 29. Kxc2 $11 {[%mdl 4096] Endgame KQ-KQ} Qe1 30. Qf3 Qg1 31. Qd1 (31. Qa3 $15) 31... Qg3 32. f5 ({Better is} 32. g5 $15) 32... exf5 $19 33. gxf5 Qf2+ {[%mdl 64] Double Attack} 34. Kc3 Qxf5 35. Qh1 (35. b3 $17 {was worth a try.}) 35... Qc8+ 36. Kd2 Qc4 $1 {[%csl LRa2,LRd4][%mdl 64] Double Attack} 37. Qxh7 (37. Qg1 $142) 37... Qxd4+ {[%mdl 64] Double Attack} 38. Kc2 Qf2+ (38... Qxe5 39. Qg8+ Ka7 40. Qxf7 $17) 39. Kc3 Qe3+ 40. Kc2 Qe2+ ({Don't take} 40... Qxe5 41. Qg8+ Ka7 42. Qxf7 $17) 41. Kc1 Qc4+ ({Much less strong is} 41... Qxe5 42. Qg8+ Ka7 43. Qxf7 $17) 42. Kb1 Qg4 {[%cal Rg4d1]} 43. Qh8+ Kc7 {[%cal Rg4d1]} 44. a3 Qe4+ 45. Kc1 d4 {Threatens to win with ...d3.} 46. Qh5 (46. Qf8 $17) 46... Qe1+ 47. Kc2 Qe4+ (47... Qf1 $142 48. Qg5 Kc6) 48. Kc1 $1 Qe3+ 49. Kd1 Qd3+ 50. Kc1 Qc4+ 51. Kd1 $2 (51. Kd2) 51... d3 52. Qh2 {[#]} Qc2+ $1 {[%mdl 512] Accuracy: White = 55%, Black = 88%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.5"]
[White "Cernousek, Lukas"]
[Black "Nasshan, Dennis"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2447"]
[BlackElo "2307"]
[Annotator "RC"]
[PlyCount "102"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:03]} Nf6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:39]} d5 {[%emt 0:00:00]} 4. d4 {[%emt 0:00:32]} dxc4 {[%emt 0:02:37]} 5. Bg2 {[%emt 0:00:05]} a6 {[%emt 0:00:55]} 6. O-O {[%emt 0:00:35]} Nc6 {[%emt 0:01:26]} 7. Bg5 {[%emt 0:02:24]} Be7 {[%emt 0:02:33]} 8. e3 {[%emt 0:00:06]} O-O {[%emt 0:02:29]} 9. Nfd2 {[%emt 0:26:00]} Na5 {[%emt 0:15:26]} 10. Qc2 {[%emt 0:06:11]} c5 {[%emt 0:02:57]} 11. dxc5 {[%emt 0:03:10]} Qc7 {[%emt 0:00:39]} 12. b4 {[%emt 0:11:09]} cxb3 {[%emt 0:02:48]} 13. axb3 {[%emt 0:00:06]} Nc6 {[%emt 0:00:25]} 14. Ne4 {[%emt 0:08:25]} Nb4 {[%emt 0:05:43]} 15. Qc4 {[%emt 0:01:33]} Nbd5 {[%emt 0:01:09]} 16. Nbc3 {[%emt 0:08:56]} h6 {[%emt 0:15:39]} 17. Bxf6 {[%emt 0:10:58]} Nxf6 {[%emt 0:00:55]} 18. Rfd1 {[%emt 0:00:02]} Nxe4 {[%emt 0:03:55]} 19. Nxe4 {[%emt 0:00:06]} Bd7 {[%emt 0:02:29]} 20. Nd6 {[%emt 0:00:03]} Bc6 {[%emt 0:01:08]} 21. e4 {[%emt 0:01:30]} Rfd8 {[%emt 0:12:45]} 22. e5 {[%emt 0:02:21]} Bxg2 {[%emt 0:01:03]} 23. Kxg2 {[%emt 0:00:01]} b6 {[%emt 0:02:55]} 24. c6 {[%emt 0:11:21]} Bxd6 {[%emt 0:03:30]} 25. exd6 {[%emt 0:00:04]} Rxd6 {[%emt 0:00:21]} 26. Rxd6 {[%emt 0:00:10]} Qxd6 {[%emt 0:00:04]} 27. c7 {[%emt 0:00:12]} Rc8 {[%emt 0:00:34]} 28. Rc1 {[%emt 0:01:23]} Qd5+ {[%emt 0:03:31]} 29. Qxd5 {[%emt 0:02:25]} exd5 {[%emt 0:00:01]} 30. Rc6 {[%emt 0:00:17]} Kf8 {[%emt 0:01:35]} 31. Kf3 {[%emt 0:00:15]} Ke7 {[%emt 0:00:13]} 32. Kf4 {[%emt 0:03:36]} Kd7 {[%emt 0:06:24]} 33. Rxb6 {[%emt 0:00:01]} Rxc7 {[%emt 0:00:09]} 34. Rxa6 {[%emt 0:00:02]} Rb7 {[%emt 0:00:46]} 35. Ke5 {[%emt 0:01:15]} Rxb3 {[%emt 0:00:57]} 36. Ra7+ {[%emt 0:00:11]} Ke8 {[%emt 0:00:31]} 37. Ra8+ {[%emt 0:00:06]} Ke7 {[%emt 0:00:17]} 38. Ra7+ {[%emt 0:00:06]} Ke8 {[%emt 0:00:01]} 39. f4 {[%emt 0:02:04]} Re3+ {[%emt 0:04:00]} 40. Kxd5 {[%emt 0:00:56]} Kf8 {[%emt 0:00:52]} 41. f5 {[%emt 0:02:27]} f6 {[%emt 0:02:34]} 42. Kd6 {[%emt 0:01:17]} Re5 {[%emt 0:06:11]} 43. g4 {[%emt 0:01:12]} Re4 {[%emt 0:00:25]} 44. h3 {[%emt 0:00:49]} Re3 {[%emt 0:01:11]} 45. h4 {[%emt 0:06:04]} Re4 {[%emt 0:00:17]} 46. Ra8+ {[%emt 0:00:26]} Kf7 {[%emt 0:00:17]} 47. Ra7+ {[%emt 0:00:03]} Kg8 {[%emt 0:01:09]} 48. g5 {[%emt 0:00:37]} hxg5 {[%emt 0:00:11]} 49. hxg5 {[%emt 0:00:04]} fxg5 {[%emt 0:00:05]} 50. Kd5 {[%emt 0:00:03]} Re1 {[%emt 0:00:51]} 51. Ra6 {[%emt 0:00:52]} Kf7 {[%emt 0:00:11] Ke4} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.6"]
[White "Chyzy, Jakub"]
[Black "Laxman, R.R."]
[Result "0-1"]
[ECO "C91"]
[WhiteElo "2291"]
[BlackElo "2441"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,106,0,8,0,0,0,0,-45,0,-10,-13,-33,0,0,15,0,0,-14,0,-55,-43,-160,-171,-175,-164,-215,-213,-194,-189,-209,-202,-179,-195,-225,-197,-209,-195,-308,-326,-328,-271,-678,-686,-735,-731,-715,-706,-781,-415,-410,-403,-403,-408,-406,-366,-436,-435,-496,-494,-502,-510,-502,-502,-466,-425,-402,-386,-442,-445,-762,-528,-926,-628,-916,-632,-904,-899,-935,-918]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d4 d6 9. c3 Bg4 10. d5 Na5 11. Bc2 Qc8 12. h3 Bd7 13. Nbd2 c6 14. dxc6 Qxc6 15. Nf1 Nc4 16. Ng3 {C91: Closed Ruy Lopez: 7...d6 8 c3 0-0 9 d4} Rfe8 17. Nh4 (17. b3 Nb6 18. Be3 Rab8 19. Rc1 Qxc3 20. Bd3 Qa5 21. Bd2 Qa3 22. Rc2 Rec8 23. Bc1 Qa5 {½-½ (60) Gashimov,V (2740)-Svidler,P (2750) Nice 2010}) 17... g6 18. Qf3 $146 {The position is equal.} ({Predecessor:} 18. Nf3 Bf8 19. Nd2 Nb6 20. Bb3 a5 21. a3 b4 22. cxb4 axb4 23. Qf3 Bg7 {0-1 (68) Ngnegevo,F (2016)-Zavgorodniaya,A (1894) St Petersburg 2013}) 18... Kg7 19. b3 Nb6 {...Ng8 is the strong threat.} 20. Qe3 Ng8 21. Nf3 Rac8 22. Bd2 f6 23. Rac1 Be6 24. Nh2 (24. h4 $11) 24... d5 $15 25. Ng4 {[#]} (25. Bb1 $15) 25... Ba3 $1 $17 26. Rcd1 {[#]} d4 $1 {[%cal Rd4e3][%mdl 512]} 27. cxd4 (27. Qf3 {was necessary.}) 27... Bxg4 ({But not} 27... Qxc2 28. dxe5 Bxg4 29. hxg4) 28. hxg4 {[#]} exd4 $1 29. Qxd4 Red8 30. Qe3 Qxc2 31. g5 Bc5 32. gxf6+ Nxf6 33. Qh6+ (33. Qg5 {is a better defense.}) 33... Kg8 $19 {Hoping for ...Bxf2+!} 34. Qg5 Rf8 35. Nf5 $2 {[#]} (35. Be3 Nbd7 36. f3) 35... Bxf2+ $1 {[%mdl 576] Double Attack} 36. Kh1 {and the idea Ne7+ leaves White hopeful.} (36. Kxf2 Nxe4+) 36... Bxe1 37. Rxe1 Kh8 38. Ne7 Qc5 39. Nxc8 Qxg5 ({Don't take} 39... Qxc8 40. Bb4 $19) 40. Bxg5 Nxc8 41. e5 Nd5 42. e6 Kg7 43. Rc1 Nce7 44. Bxe7 Nxe7 {[%mdl 4096] Endgame KRN-KR} 45. Rc7 Kf6 46. Ra7 Kxe6 47. Rxa6+ Kd5 48. Ra7 Kd6 {Black is clearly winning.} 49. a4 (49. Kh2 $142) 49... b4 50. Rb7 Nc6 51. Rxh7 Rf1+ 52. Kh2 Rb1 53. Rh6 Ne5 {Accuracy: White = 31%, Black = 75%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.7"]
[White "Czerw, Dawid"]
[Black "Neuman, Petr"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2262"]
[BlackElo "2371"]
[Annotator "TA"]
[PlyCount "22"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,22,21,42,7,7,-6,4,1,10,14,15,12,11,-10,7]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 a6 6. Nh4 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} (6. Bd2 e6 7. Nh4 Be4 8. f3 Bg6 9. Nxg6 hxg6 10. Qb3 b5 11. cxd5 cxd5 12. Rc1 Bd6 13. a4 b4 {½-½ (47) Ding,L (2811)-Shankland,S (2705) chess.com INT 2019}) 6... Bg4 {The position is equal.} 7. f3 Bc8 {[#] And now ...g5 would win.} 8. g3 dxc4 $146 ({Predecessor:} 8... e6 9. Ng2 Be7 10. Be2 Nbd7 11. e4 dxe4 12. fxe4 Bb4 13. Bf3 e5 {1-0 (78) Cylwik,Z (1979)-Przybyl,J (1916) Bialystok 2010}) 9. Bxc4 e6 10. e4 c5 11. Be3 cxd4 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.8"]
[White "Kvaloy, Aksel Bu"]
[Black "Vokac, Marek"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "2132"]
[BlackElo "2334"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,96,22,56,39,63,64,60,57,64,51,65,80,131,114,231,225,191,204,219,118,116,107,112,50,30,-14,0,-17,-15,-90,-65,-90,-41,-238,-118,-252,-56,-104,-98,-143,-87,-317,-277,-318,-250,-807,-770,-1491,-1379,-3162,-3146,-2905,-2355,-1372,-914,-782,-719,-739,-729,-5810,-5912,-5912,-5912,-5867,-5864,-5756,-5481,-1966,-1918,-1252,-625,-2029,-1777,-12839,-12839,-12835,-5314,-29993,-29994]} 1. e4 Nf6 2. e5 Ng8 3. d4 d6 4. exd6 cxd6 5. c4 g6 6. Nc3 Bg7 7. g3 Nf6 8. Bg2 O-O 9. Nge2 Nc6 10. O-O Bd7 11. b3 {E61: King's Indian: Early deviations for White, including Smyslov System} Qc8 (11... a6 12. Bb2 Rb8 13. d5 Na5 14. Qd2 b5 15. cxb5 axb5 16. Ne4 Nxe4 17. Bxe4 Bxb2 18. Qxb2 b4 {½-½ (30) Ofitserian,B (2409)-Gharagyozyan,A (2298) Sochi 2019}) 12. d5 Ne5 13. Be3 {White is slightly better.} Bh3 14. Rc1 $146 ({Predecessor:} 14. f3 a6 15. Qd2 Qd7 16. Bxh3 Qxh3 17. Rae1 Rab8 18. a4 {½-½ (65) Marko,M (2131)-Mego,P (2109) Slovakia 2003}) 14... Bxg2 15. Kxg2 h5 (15... Nfg4 $142) 16. h3 $16 h4 ({Don't go for} 16... Qf5 $2 17. f4 $18) (16... a6 $16) 17. f4 $18 ({Much less strong is} 17. gxh4 Ned7) 17... Ned7 18. g4 Nc5 19. b4 (19. f5 $18) 19... Na6 $16 {[#]} 20. Qb3 $1 e6 21. g5 (21. f5 $16) 21... Nh5 $14 22. Ne4 exd5 23. cxd5 Qd7 {And now ...Rfe8 would win.} 24. N2c3 (24. b5 $11 Nc7 25. Qd3) 24... Rfe8 $17 25. Rce1 Re7 {White must now prevent ...Rae8.} 26. b5 $2 (26. Bd2 $15) 26... Nc7 (26... Bxc3 $1 $19 {is more deadly.} 27. Nxc3 Rae8) 27. Qb4 (27. Bd2 $17) 27... Ne8 $2 (27... Qf5 $19 28. Rf3 (28. Qxd6 $2 Rae8 $19) 28... Bxc3 29. Nxc3 Nxd5 30. Nxd5 Qxd5) 28. Bd2 Rc8 29. Rf2 a5 ({Black should play} 29... Bxc3 30. Nxc3 Rxe1 31. Bxe1 Neg7) 30. Qxa5 $2 (30. bxa6 $17 bxa6 31. Rf3) 30... Rc4 $19 {aiming for ...Bxc3.} 31. Rfe2 Rd4 {Threatens to win with ...Rxd2!} 32. Qa7 $2 {[#]} (32. Nf2 Rxe2 33. Nxe2 Rxd5 34. a4) 32... Rxd2 $1 {[%mdl 576] Remove Defender} 33. Rxd2 Nxf4+ {[%mdl 64] Double Attack} 34. Kg1 Bxc3 {[%mdl 64] Pin} 35. Qe3 Nxh3+ 36. Kh2 Be5+ 37. Kh1 Nf4 38. Rg1 Nh5 {Hoping for ...Bf4.} 39. Rf2 Ng3+ 40. Nxg3 Bxg3 41. Rxg3 hxg3 42. Qxg3 Qxb5 43. Qf3 Qb1+ 44. Kh2 Qe4 45. Qh3 Qe5+ 46. Kg1 Qxg5+ 47. Kf1 Qxd5 48. Rh2 Qd1+ {Accuracy: White = 28%, Black = 55%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.9"]
[White "Liu, Zhaoqi"]
[Black "Ludvik, Tomas"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2328"]
[BlackElo "2272"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,95,47,30,47,29,41,3,0,0,13,7,15,9,133,135,123,66,94,78,87,100,96,25,35,14,93,92,105,122,137,63,68,-9,8,9,51,15,131,131,205,87,91,83,82,81,87,72,98,0,68,0,0,-46,0,-56,-26,-78,-77,-36,0,0,0,-225,-101,-66,-79,-79,-33,-56,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 c5 4. O-O Nc6 5. d4 cxd4 6. Nxd4 e5 7. Nxc6 bxc6 {[#]} 8. c4 $1 {[%mdl 512]} Rb8 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} (8... dxc4 9. Bxc6+) (8... Be6 9. Qa4 Qd7 10. Nc3 Rc8 11. Bg5 d4 12. Rad1 Be7 13. Bxf6 Bxf6 14. c5 O-O 15. e3 Bf5 16. exd4 exd4 {1-0 (46) Duda,J (2738)-Tregubov,P (2592) chess.com INT 2019}) 9. Nc3 {[%cal Rc4d5]} d4 $1 {[%cal Rd4c3]} 10. Ne4 Nxe4 11. Bxe4 Qd7 12. e3 {Threatening Qf3.} f5 13. Bg2 {White wants to play exd4.} Be7 $146 (13... Bc5 $1 $11) ({Predecessor:} 13... Bc5 14. Qa4 e4 15. Qa5 Qe7 16. exd4 Bxd4 {½-½ (49) Bennborn,J (2431)-Spasov,S (2256) ICCF email 2010}) 14. exd4 $1 $16 exd4 15. Qh5+ (15. Re1 $16 O-O 16. Qa4) 15... g6 $14 16. Qe2 O-O 17. Bh6 Rf7 18. Bf4 (18. Rad1 $16) 18... Rb6 19. Rfd1 Bb7 {[#]} (19... Ba6 $11 {keeps the balance.}) 20. c5 $1 $16 {[%cal Rc5b6][%mdl 512]} Ba6 (20... Bxc5 21. Qc4) 21. Qc2 $36 {[%mdl 2048] Keeping Black busy.} Rb4 22. a3 ({White should play} 22. Qd2 $1 $16 {[%cal Rd2b4]} Rb7 23. Qxd4 Qxd4 24. Rxd4) 22... Rc4 $14 23. Qe2 (23. Qd3 $14 Bb5 24. Qb3 Rxc5 25. Rdc1) 23... Bb5 24. Qd2 Bxc5 (24... d3 $5) 25. b4 Be7 (25... Bf8 $1 $11) 26. Bf1 $16 Bf6 {[#]} (26... d3 $16) 27. Bxc4 (27. a4 $1 $18 {[%cal Ra4b5]} Ba6 28. Bd3) 27... Bxc4 28. Rac1 Bd5 29. Re1 Be4 30. h4 Qd5 31. Kh2 ({White should try} 31. Bh6 $16 Be7 32. Kh2) 31... Qb3 (31... h5 $11) 32. a4 (32. Bh6 $1 $14) 32... Qf3 $11 {[%csl Ge4][%cal Rf3g2]} 33. Rg1 (33. Rxe4 $5 fxe4 34. Rxc6 $11) 33... Rb7 {[%mdl 1024] Black has compensation.} 34. Rcf1 (34. b5 $11) 34... Qb3 35. Bd6 {[#]} (35. Bg5 $11 {remains equal.} Bg7 36. Qe2) 35... Rd7 $1 $17 {[%cal Rd7d6]} ({But not} 35... Qxa4 36. Bc5 $11) 36. Bc5 a6 37. Qf4 Qf3 38. Bd6 $2 (38. Qb8+ $1 $11 Rd8 39. Qc7) 38... g5 (38... d3 $19 {and Black stays clearly on top.} 39. Be5 Qxf4 40. gxf4 Bxe5 41. fxe5 d2) 39. hxg5 Rxd6 $1 40. gxf6 Rxf6 {aiming for ...d3.} 41. Qg5+ Rg6 ({Better is} 41... Kf7 $15 42. Qh4 Rg6) 42. Qd8+ $11 {The position is equal.} Kf7 {Threatens to win with ...Rh6+.} 43. Qd7+ Kg8 {[%cal Rg6h6]} 44. Qe8+ Kg7 {[%cal Rf3h5]} 45. Qe7+ Kg8 {Strongly threatening ...Rh6+.} 46. Qd8+ Kf7 47. Qd7+ Kg8 {[%cal Rg6h6]} 48. Qe8+ {Accuracy: White = 46%, Black = 35%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.10"]
[White "Quesada Vera, Liordis"]
[Black "Pavlidou, Ekaterini"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2386"]
[BlackElo "2160"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,77,16,29,39,36,21,56,54,55,24,24,25,22,18,39,8,50,52,80,77,53,39,51,40,65,57,60,52,53,64,81,98,96,68,75,75,94,86,103,90,132,71,188,188,202,185,201,186,186,108,531,524,541,352,1076,1074,1005,484,1011,867,824,805,5414,5406,2867,2987,29994,29995,29995,29996]} 1. c4 c5 2. Nf3 Nc6 3. Nc3 e5 4. e3 f5 (4... Nf6 5. d4 e4 6. d5 exf3 7. dxc6 bxc6 8. e4 Qc7 9. Qxf3 Bd6 10. Bd3 Be5 11. h3 O-O 12. Bd2 d5 13. cxd5 cxd5 14. exd5 {½-½ (52) Vidit,S (2722)-Grandelius,N (2681) Budva 2019}) 5. a3 $146 ({Predecessor:} 5. d4 e4 6. d5 exf3 7. dxc6 dxc6 8. Qxd8+ Kxd8 9. gxf3 Nf6 10. b3 g6 11. Bb2 Bg7 12. O-O-O+ Ke7 13. h4 {½-½ (38) Petrov,N (2595)-Istratescu,A (2561) Abu Dhabi 2019}) 5... e4 6. Ng1 {A35: Symmetrical English: 2 Nc3 Nc6 3 Nf3} Nf6 7. d3 d6 8. Qc2 {White is slightly better.} Qe7 9. Nge2 exd3 10. Qxd3 Ne5 11. Qc2 Qf7 12. Nf4 Be7 13. b3 O-O 14. Bb2 Bd7 15. h4 a6 16. Be2 Rab8 17. a4 $1 Rbe8 18. h5 Nfg4 19. Bf3 {[#] And now Bd5 would win.} Nxf3+ 20. gxf3 Ne5 21. Rh3 Bc6 22. Ncd5 Bg5 23. O-O-O Bh6 24. a5 {[%cal Ba4a5,Ba5b6][%mdl 32]} Rb8 25. Rg1 b5 (25... Rbd8 $16 {was necessary.}) 26. axb6 $18 Rb7 27. Qc3 Rfb8 28. Rhg3 Kh8 29. Kc2 (29. Qd2 $18) 29... Rxb6 $2 {[%mdl 8192]} (29... Bxd5 $16 30. Nxd5 f4 31. exf4 (31. Nxf4 Rxb6 32. Nd5 R6b7 $19) 31... Qf5+ 32. Kd1 Bxf4) 30. Nxb6 Rxb6 31. Qa5 Qb7 $2 (31... Rb8 32. Qxa6 Qe8) 32. Bxe5 dxe5 33. Qxc5 (33. Rd1 $142 {Intending Rd8+ and mate.} Kg8 34. Qxc5) 33... Kg8 (33... Qb8 $142) 34. Ne6 {[%csl Ge6][%cal Rc5f8]} Be4+ 35. fxe4 Qxe4+ {[#]} 36. Kc3 $1 {[%csl Ge6][%cal Rc5f8]} Rxe6 37. Qc7 {[%cal Rg3g7]} Kf8 38. Rxg7 Bxg7 39. Rxg7 {Accuracy: White = 63%, Black = 38%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.11"]
[White "Kozak, Antoni"]
[Black "Kakushadze, Ilia"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2380"]
[BlackElo "2149"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,67,24,21,39,43,35,40,28,27,39,41,28,24,46,-5,6,-60,-59,-58,-50,-97,-93,-95,-109,-116,-52,-61,0,-33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,185,174,193,178,271,258,257,263,398,370,591,584]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 O-O 6. Nd5 a5 7. a3 Bc5 {A28: English Opening: Four Knights Variation} 8. Ng5 {White threatens Nxf6+ and mate.} g6 9. Nxf6+ Qxf6 {White is slightly better.} 10. Ne4 Qe7 11. b3 d6 12. Bb2 Nd8 $146 ({Predecessor:} 12... Ba7 13. h4 Nd8 14. O-O-O {½-½ (31) Demuth,A (2548)-Sengupta,D (2594) Teplice 2017}) 13. O-O-O (13. h4 $14) 13... Bf5 $11 14. Bd3 (14. d3 $11) 14... Bxe4 $1 $15 15. Bxe4 d5 $1 {[%cal Rd5e4]} 16. Bxd5 Bxa3 17. Bxa3 Qxa3+ 18. Qb2 Qb4 (18... Qd6 $17 19. d4 exd4 20. Qxd4 Qe7) 19. Qc3 Qa3+ ({Black should play} 19... Qd6 $15) 20. Kc2 c6 21. c5 $36 {[%mdl 2048] Ra1 is the strong threat. White is more active.} cxd5 22. Ra1 {[#]} d4 $1 {[%cal Rd4c3]} 23. Qc4 {[#]} (23. exd4 exd4) 23... b5 $1 24. Qxb5 Rb8 $1 (24... d3+ $2 25. Kb1 $18) 25. Qxb8 (25. Rxa3 $2 {too greedy.} Rxb5 26. Rc1 Rxc5+ 27. Kd1 Rxc1+ 28. Kxc1 Nc6 $19) 25... Qxc5+ 26. Kb2 $1 {Black must now prevent Rac1.} Nc6 27. Qc7 Rb8 {Strongly threatening ...Qb4!} 28. Rhc1 Qb5 $2 (28... Rxb3+ $1 $11 29. Kxb3 Qb4+ 30. Ka2 Qa4+ 31. Kb2 Qb4+ 32. Kc2 Qc4+ 33. Kd1 (33. Kb2 Qb4+ 34. Kc2 Qc4+ 35. Kd1 Qf1+ {[%mdl 64] Double Attack} 36. Kc2 Qc4+ $11) 33... Qf1+ {[%mdl 64] Double Attack} 34. Kc2 Qc4+ 35. Kb2 Qb4+ 36. Kc2 Qc4+) 29. Ra3 $18 Nb4 {[#]} 30. Rc4 $1 a4 (30... dxe3 {was necessary.} 31. fxe3 Rb6) 31. Kb1 dxe3 32. fxe3 ({Don't blunder} 32. bxa4 $2 Qe8 $19) 32... Nd3 (32... Nd5 {keeps fighting.} 33. Qc6 Qxc6 34. Rxc6 axb3) 33. Rcxa4 Nc5 {[#]} (33... Rb7 $142 34. Qc3 Rb6) 34. Qxb8+ $1 {[%mdl 512] Accuracy: White = 74%, Black = 64%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.12"]
[White "Malovanyi, Yulian"]
[Black "Foo, William J"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2360"]
[BlackElo "2186"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,53,13,7,-4,35,24,54,50,69,67,64,55,116,103,127,94,81,87,147,136,195,190,195,198,181,198,191,191,198,195,207,214,216,209,273,279,270,276,271,266,310,312,781,786,781,758]} 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. a3 Bxc5 6. Nf3 {B12: Caro-Kann: Advance Variation} (6. Qg4 Ne7 7. Bd3 O-O 8. Nf3 f5 9. exf6 Rxf6 10. Qh4 h6 11. O-O Nbc6 12. c4 Qf8 {1-0 (32) Karjakin,S (2754)-Wei,Y (2725) Jerusalem 2019}) 6... Qb6 (6... Ne7 {is more complex.} 7. b4 Bb6 8. Bb2 a5 9. Nbd2 axb4 10. axb4 Rxa1 11. Qxa1 O-O) 7. Qd2 a5 8. Nc3 {White is slightly better.} Bd7 9. Bd3 Ne7 10. O-O Bc6 $146 (10... Qd8 $14) ({Predecessor:} 10... Ng6 11. b3 Bc6 12. Bb2 O-O {0-1 (27) Kacakovski,D (2133)-Jovic,S (2310) Ohrid 2016}) 11. Qg5 $16 Nd7 12. Bd2 {Black must now prevent b4.} Ng6 13. h4 Bd4 {[#]} (13... Be7 $142 14. Qg3 d4) 14. Rae1 $1 O-O {[#]} (14... Nc5 $16) 15. Qg3 $1 $18 Rae8 16. h5 Ngxe5 17. Nxe5 Nxe5 18. Rxe5 $40 {[%mdl 128] Black is in trouble.} Bxe5 19. Qxe5 f6 20. Qd6 Rf7 21. h6 g6 22. Na4 Qd4 23. Nc5 Qxb2 24. Nxe6 ({Resist} 24. Bxa5 $6 Qe5 $16) 24... Rd7 25. Qg3 {Threatens to win with Bxg6!} Rxe6 $2 (25... Qe5) 26. Qb8+ Kf7 27. Qh8 {[%mdl 64] Decoy. Accuracy: White = 91%, Black = 35%.} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.13"]
[White "Mis, Mieszko"]
[Black "Sharma Isha"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "2349"]
[BlackElo "2169"]
[Annotator "TA"]
[PlyCount "140"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,140,0,0,6,20,12,0,63,64,63,35,96,95,97,29,46,0,93,12,37,37,39,8,26,3,0,0,16,0,29,29,29,31,27,30,27,53,55,39,65,11,12,16,14,18,41,31,37,33,46,33,58,50,46,47,47,23,41,31,48,1,122,128,290,291,294,280,228,118,115,123,123,0,0,0,150,158,152,154,162,174,164,169,169,165,172,169,175,170,170,168,176,-12837,-12839,-12839,-12840,-12841,-12841,-12841,-12839,-12840,-12840,-12841,-12841,-12841,-12842,-12842,-12843,-12843,-12843,-12844,-12844,-12845,-12845,-12845,-12846,-12846,-12847,-12847,-12847,-12849,-12847,-12848,-12848,-12849,-12849,-12850,-12850]} 1. d4 d6 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. b3 e5 7. dxe5 dxe5 8. Ba3 Qxd1 {A49: 1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems} 9. Rxd1 Re8 10. Nc3 c6 (10... e4 $11 11. Nd4 a6) 11. Nd2 $14 Be6 $146 ({Predecessor:} 11... Bf8 12. Bb2 Nbd7 13. Nc4 Nc5 14. a3 Be6 15. Nxe5 Bxb3 16. cxb3 Rxe5 {1-0 (46) Meier,G (2654)-Adhiban,B (2674) Berlin 2015}) 12. Nde4 {And now Nd6 would win.} Na6 (12... Nbd7 $14) 13. Nd6 $1 $16 Re7 14. Nc4 (14. Nxb7 $16 Rxb7 15. Bxc6) 14... Ree8 15. Nd6 ({Much weaker is} 15. Nxe5 Ng4 $15) 15... Reb8 (15... Re7 $1 $11) 16. Rd3 (16. Nxb7 $16 Rxb7 17. Bxc6) 16... Bf8 17. Rad1 Rd8 18. b4 Bxd6 19. Rxd6 Rxd6 20. Rxd6 Nc7 21. Bb2 Nfd5 (21... a5 {with more complications.} 22. b5 cxb5 23. a3 Rb8 24. Nd1 Nd7) 22. Nxd5 {[%mdl 64] Discovered Attack} cxd5 23. Bxe5 Ne8 24. Rxd5 Bxd5 25. Bxd5 $11 {[%mdl 4096] Endgame KRN-KB} Rc8 26. c4 b6 27. Kg2 (27. e4 $14) 27... Kf8 $1 28. Kf3 Ke7 29. Ke3 f6 30. Bb2 (30. Bc3 {looks sharper.} Nc7 31. Bc6 Ne6 32. b5 f5 33. Bd5) 30... Nc7 31. Be4 Ke6 32. Bd4 Rb8 33. Kd3 Ke7 34. Kc3 Ne6 35. e3 Rc8 36. a4 Rb8 37. Bd5 Nc7 (37... Nxd4 $11 38. exd4 Kd7) 38. e4 $1 $16 a5 $2 (38... g5 $16 {is a better defense.} 39. c5 b5) 39. b5 $1 $18 Ne6 40. Bxe6 $1 Kxe6 {KR-KB} 41. c5 (41. f4 $18) 41... bxc5 $16 42. Bxc5 f5 {[#]} 43. Kc4 (43. f3 $1 $16) 43... fxe4 $11 44. b6 {aiming for Be3.} Kd7 (44... Rc8 $1 $11) 45. Kb5 $16 Re8 46. Be3 ({And not} 46. Kxa5 Kc6 $11) 46... Kc8 47. Kxa5 {Threatens to win with Ka6.} Kb7 {[#]} 48. Kb5 $1 Ra8 49. a5 Ra6 50. Bf4 Ra8 51. Be5 Ra6 52. Bb8 Ra8 53. Ba7 $4 {[%mdl 8192]} (53. Bd6 $18) 53... Rf8 $19 {Black is clearly winning.} 54. a6+ Ka8 55. Kc4 Rxf2 56. Kd4 Re2 57. h3 e3 58. g4 g5 59. Kd3 Re1 60. Ke4 e2 61. Ke3 Rh1 62. Kxe2 Rxh3 63. Kf2 Ra3 64. Kg2 Rxa6 65. Kf3 Ra4 66. Kg3 Ra3+ 67. Kf2 Kb7 68. Kg2 {[#]} h5 $1 69. gxh5 g4 {( -> ...Rh3)} 70. h6 Rh3 {Accuracy: White = 54%, Black = 54%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.14"]
[White "Wiley, Tom E"]
[Black "Priehoda, Vitezslav"]
[Result "0-1"]
[ECO "E42"]
[WhiteElo "2170"]
[BlackElo "2341"]
[Annotator "TA"]
[PlyCount "188"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,188,39,12,31,49,31,0,0,0,0,0,0,0,0,0,0,0,8,8,13,-21,-16,0,0,0,-16,0,0,-2,-5,-29,-19,-20,-11,-37,-41,-42,-34,-50,0,-56,0,-69,-33,-80,0,-124,0,-35,-35,-40,-46,-43,-48,-158,-171,-164,-97,-88,0,-156,-162,-184,-182,-173,-161,-219,-216,-211,-83,-78,-45,-37,-28,-87,-72,-124,0,-8,-22,-20,-26,-41,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-650,-605,-1132,-1000,-1437,-1348,-1006,-592,-6617,-3709,-7258,-6235,-1922,-1400,-29966,-12851,-29972,-29973,-29972,-7376,-29967,-29966,-29976,-29977,-29978,-29979,-5120,-584,-5097,-5106,-29968,-29974,-29972,-29975,-29975,-29976,-29983,-29981,-29978,-29969,-29994,-29983,-29983,-29983,-29983,-29984,-29983,-29986,-29986,-29987,-29987,-29978,-29988,-29989,-29988,-29987,-29987,0,-29988,-29989,-29989,-29986,-29988,-29989,-29989,-29989,-29989,-29990]} 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 c5 5. Nge2 b6 6. a3 Ba5 7. Rb1 Na6 8. g3 Bb7 {E42: Nimzo-Indian: Rubinstein: 4...c5 5 Ne2.} 9. d5 $1 b5 10. Bg2 bxc4 {The position is equal.} 11. O-O O-O 12. e4 exd5 13. Nxd5 Nc7 14. Nxf6+ Qxf6 15. Qxd7 Rad8 16. Qa4 Qa6 {[#]} 17. Be3 $146 ({Predecessor:} 17. Nf4 Rfe8 18. Be3 Bc6 19. Qc2 Bb6 20. Rfc1 Ba4 21. Qe2 Ba5 22. b4 cxb3 23. Qxa6 Nxa6 {½-½ (57) Raffaele,E (2157)-Oliveira,D (2161) LSS email 2013}) 17... Bc6 18. Qc2 Ne6 {White should prevent ...Nd4.} 19. Rfd1 Rd3 20. Nf4 $1 {[%cal Rf4d3]} Nxf4 21. Bxf4 Bb6 {With the idea ...Ba4.} 22. Re1 Ba4 23. Qe2 Rfd8 24. e5 {Black must now prevent e6.} Ba5 25. Rec1 Qe6 26. h4 Bb5 27. Qh5 (27. Qe4 $11) 27... g6 (27... R8d4 $15) 28. Qh6 (28. Qg5 $1 $11) 28... R8d4 $15 29. Rc2 Qf5 (29... Bc6 $17 30. Bxc6 Rd1+ 31. Rxd1 Rxd1+ 32. Kg2 Qxc6+ 33. f3 Qd5) 30. Rcc1 (30. Kh2 $11 {keeps the balance.}) 30... Qe6 ({Better is} 30... Bd2 $17 31. Bxd2 Rxd2) 31. h5 Bd2 32. Bxd2 Rxd2 33. hxg6 hxg6 $40 {[%mdl 128] Black mounts an attack.} 34. Re1 (34. Qg5 $1 $15) 34... Qf5 $17 35. Qe3 R2d3 (35... Bd7 $19 36. a4 a5) 36. Qe2 Rd2 (36... Bd7 $142) 37. Qe3 Bd7 38. Bf1 Be6 $1 39. Bg2 R2d3 40. Qe2 (40. Qh6 {was worth a try.}) 40... Qg5 $19 41. Qf1 Qd8 (41... Qh5 $19 {and Black stays clearly on top.} 42. Re2 Kg7) 42. Bh3 $17 Qd7 (42... Rf4 $5 43. Bxe6 (43. gxf4 $2 {too greedy.} Bxh3 44. Qe2 Qh4 $19) 43... Rxg3+ 44. fxg3 Qd4+ 45. Kh2 Rxf1 46. Rxf1 fxe6 $17) 43. Bxe6 Qxe6 44. Qg2 (44. Rbc1 $11 {remains equal.}) 44... Kg7 45. Qb7 (45. Qf1 $142) 45... Qb6 (45... Rb3 $17 46. Qxa7 Qg4 $1 {[%mdl 512]}) 46. Qxb6 axb6 $11 {[%mdl 4096] Endgame KRR-KRR} 47. e6 fxe6 48. Rxe6 Rd1+ (48... Rb3 {seems wilder.} 49. Re7+ Kf6 50. Rbe1 Rd6 51. R7e4 Rxb2 52. Rf4+ Kg7) 49. Rxd1 Rxd1+ {KR-KR} 50. Kg2 Rb1 51. Re2 (51. Rxb6 $2 {[#]} c3 $1 $19 {[%mdl 512]}) 51... Kf6 52. f4 Rc1 53. g4 Rd1 54. Rc2 Ke6 55. Rxc4 Rd2+ 56. Kg3 Rxb2 57. Kh4 Kd5 58. Rc1 c4 59. Kg5 Rg2 60. a4 $1 Rg3 61. f5 $2 {[%mdl 8192]} (61. a5 $11 bxa5 62. Ra1) 61... gxf5 $19 62. Kxf5 Rf3+ 63. Kg6 Ra3 64. g5 Rxa4 65. Kf7 b5 66. g6 b4 67. Rd1+ Kc5 68. Re1 Ra2 69. g7 Rf2+ 70. Ke6 Rg2 71. Kf6 {[#]} Rxg7 $1 {[%mdl 512]} 72. Kxg7 {KR-KPP} b3 73. Kf6 c3 74. Re8 b2 (74... c2 $142 {Threatens to win with ...Kc4.} 75. Ke5 Kc4 76. Rc8+ Kd3 77. Rd8+ Kc3 78. Rc8+ Kb2) 75. Rb8 c2 76. Rxb2 c1=Q {KQ-KR} 77. Rf2 Qh6+ 78. Kf7 Qh5+ 79. Kf8 Kd6 80. Rf6+ Ke5 81. Rf7 Qh6+ 82. Ke7 Qd6+ 83. Ke8 Qb8+ ({Inferior is} 83... Ke6 84. Rf6+ Kxf6 $11) 84. Ke7 Qc8 85. Rg7 Qc7+ 86. Kf8 Qd8+ 87. Kf7 Kf5 88. Rh7 Qf6+ 89. Kg8 Qd8+ ({Not} 89... Kg6 90. Rh6+ Kxh6 $11) 90. Kf7 $1 Qd7+ {Black mates.} 91. Kg8 Qe8+ 92. Kg7 Kg5 93. Rh1 Qd7+ 94. Kf8 Qc8+ {Accuracy: White = 51%, Black = 82%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.15"]
[White "Domogaev, Sergey"]
[Black "Ochedzan, Tymon"]
[Result "1/2-1/2"]
[ECO "E71"]
[WhiteElo "2334"]
[BlackElo "2140"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,129,25,17,31,54,34,0,0,0,35,39,86,58,75,61,155,159,151,60,67,69,166,170,172,93,84,47,50,8,10,9,12,9,20,10,13,21,12,0,0,0,0,0,0,0,0,-4,10,-68,-72,-64,-73,-178,-167,-205,-200,-190,-85,-100,-63,-60,-20,-35,-8,-8,0,0,0,0,14,-58,-48,-77,-8,-14,-8,-13,0,-8,-8,-8,-8,-8,0,-55,-56,-57,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Be3 Na6 7. Nf3 e5 8. d5 Nc5 9. Qc2 a5 {E90: King's Indian: Classical: Early deviations and 6 h3} 10. g4 (10. O-O-O Nh5 11. g3 f5 12. Bxc5 dxc5 13. Be2 Nf6 14. Nd2 Ne8 15. exf5 gxf5 16. g4 Nd6 17. Rhg1 Kh8 18. gxf5 Bxf5 {0-1 (34) Paravyan,D (2634)-Grischuk,A (2771) St Petersburg 2018}) 10... c6 11. Bxc5 (11. O-O-O {is more complex.} cxd5 12. cxd5 a4 13. Kb1 Qa5 14. Nd2) 11... dxc5 12. Be2 $146 ({Predecessor:} 12. g5 Nh5 13. O-O-O a4 14. dxc6 Qa5 15. cxb7 Bxb7 {½-½ (82) Sidenko,A (2256)-Matic,D (2243) Chessfriend.com 2005}) 12... Ne8 13. O-O-O Qe7 14. Qd2 Bd7 15. Rhg1 f5 (15... Nf6 $14) 16. gxf5 gxf5 17. dxc6 ({Better is} 17. Ng5 $16) 17... Bxc6 $14 18. Ng5 fxe4 (18... Kh8 $1 $14) 19. Nd5 $18 ({Much less strong is} 19. Ngxe4 $6 Kh8 $14) 19... Bxd5 20. Qxd5+ (20. cxd5 $18 Rf6 21. Nxe4) 20... Kh8 $16 21. Qxe4 {[%csl Gg5][%cal Re4h7]} Bh6 22. Qe3 Nd6 23. Rd5 $1 {[%cal Rd5e5]} Rae8 24. h4 {White wants to play Bh5.} Nf5 25. Qxc5 Nxh4 26. Qxe7 $1 Rxe7 27. Kd1 (27. Kb1 {keeps more tension.} Rg7 28. Rxe5 Ng6 29. Re3 b6 30. Rh3) 27... Rxf2 28. Rxa5 Ng6 29. Ke1 Rf8 30. Rb5 Nf4 31. Ne4 Rd8 32. Rb6 ({White should play} 32. c5 $11) 32... Nd3+ $1 $15 33. Bxd3 Be3 {[%mdl 64] Double Attack} 34. Rh1 (34. c5 $17 Bxg1 35. Rd6) 34... Bxb6 $19 35. Ke2 {[#]} Bd4 $1 36. Ng5 Rdd7 (36... Rg8 $19 {is more deadly.} 37. Rh5 e4 38. Nxe4 Bxb2) 37. Bf5 Rc7 ({Much weaker is} 37... Bxb2 38. Bxd7 Rxd7 39. Ke3 $11) 38. b3 b6 39. Kf3 Ra7 40. a4 Rg7 41. Rh5 $1 Bb2 42. Ke4 Rae7 43. Ne6 (43. b4 $11) 43... Rg3 44. Ng5 {[#]} Rxb3 (44... Bc1 $1 $17 {[%cal Rc1g5]} 45. Nf3 Bf4) 45. Nxh7 $11 Rb4 46. Kd5 e4 47. Ng5+ Kg8 48. Be6+ Kf8 49. Nxe4 Rxa4 {...Ra5+ is the strong threat.} 50. Rh2 (50. Rf5+ $11 Kg7 51. Rf2) 50... Ra5+ $15 51. c5 Ba3 ({Black should try} 51... Bd4 $15 52. Kxd4 Rxe6 53. cxb6 Rxb6) 52. Rf2+ $11 {The position is equal.} Kg7 {[%cal Ra3c5] Strongly threatening ...Bxc5.} 53. Rg2+ Kh8 {[%cal Ra3c5]} 54. Rg8+ Kh7 {And now ...Rxe6! would win.} 55. Nf6+ Kh6 56. Ng4+ Kh5 (56... Kh7 $5 57. Nf6+ $8 Kh6 58. Ng4+ Kh7 59. Nf6+ $11) 57. Nf6+ Kh4 (57... Kh6 $5 58. Ng4+ $8 Kh5 59. Nf6+ Kh6 $11) 58. Rg4+ Kh3 59. Rg7+ {[#]} Rxe6 $1 {[%mdl 512]} 60. Kxe6 {Threatens to win with c6.} Bxc5 {KRB-KRN} 61. Nd5 Ra8 62. Rb7 Rh8 63. Kd7 Rh6 {Hoping for ...Rd6+.} 64. Kc7 Kg4 65. Nxb6 {Accuracy: White = 52%, Black = 46%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.16"]
[Round "8.16"]
[White "Shehzad, Shazil"]
[Black "Strebkovs, Andrejs"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "2162"]
[BlackElo "2278"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,108,58,42,55,52,56,54,56,56,56,39,54,54,66,59,67,64,67,68,67,67,72,67,69,64,83,79,90,81,64,33,28,29,41,39,42,0,120,127,115,117,112,111,238,245,243,242,206,52,60,53,58,59,52,58,58,65,77,66,61,40,43,0,0,-95,-75,-200,-191,-198,-193,-262,-268,-365,-356,-412,-427,-400,-345,-333,0,-418,-365,-445,-450,-472,-480,-483,-432,-456,-426,-629,-649,-1053,-797,-1083,-784,-762,-747,-695,-681]} 1. e4 d6 2. d4 g6 3. Nc3 c6 4. f4 d5 5. e5 h5 6. Nf3 Nh6 {B06: Modern Defence} 7. Be3 Bg4 8. h3 Nf5 {White is slightly better.} 9. Bf2 Bxf3 $1 10. Qxf3 h4 11. Bd3 e6 12. O-O Nd7 13. Ne2 {[#]} Be7 $146 ({Predecessor:} 13... a5 14. b3 Ba3 15. c4 {0-1 (51) Lopez,B (2407)-Ehlvest,J (2603) ICC INT 2008}) 14. b3 Kf8 15. c4 a5 16. Rab1 Kg7 17. Rfc1 Qb8 18. Kh2 Nb6 19. Bxf5 gxf5 20. g4 {[#] aiming for Rg1.} hxg3+ $1 21. Qxg3+ Kf8 22. Rg1 $36 {[%mdl 2048] White has the initiative.} Ke8 23. Nc3 Kd7 (23... Qd8 $11) 24. c5 $16 Nc8 25. Qg7 Rf8 26. Na4 Ra6 (26... Qc7 $16) 27. Bh4 $18 Ke8 28. Bxe7 Nxe7 29. Nb6 $2 ({White should play} 29. h4 $18) 29... Qd8 30. Rbd1 Rxb6 31. cxb6 Qxb6 32. Qg3 Ng6 33. Qf2 Rh8 34. Rd3 Qd8 35. Rg5 Kd7 36. Qg3 Qf8 37. Kg1 (37. Rf3 $11 {remains equal.}) 37... Qa3 $17 {...Qc1+ is the strong threat.} 38. Rd1 (38. Rf3 $17) 38... Qxa2 $19 39. Qe3 {[#]} Qc2 $1 {[%cal Rc2d1]} 40. Re1 (40. Rf1 {was called for.}) 40... Qe4 41. Qxe4 dxe4 {[%mdl 4096] Endgame KRR-KRN} 42. Rg3 Nxf4 43. Kh2 Nd5 44. Reg1 Nf4 45. Re1 $1 Ng6 46. Rg2 Kc7 {Black is clearly winning.} ({Don't do} 46... Nh4 47. Rf2 $19) 47. Ra2 Rd8 48. Ra4 b6 49. Kg3 Rg8 50. Kh2 (50. Kf2 $142 Nf4 51. Re3) 50... Nh4 {White must now prevent ...Nf3+.} 51. Rd1 Rg2+ 52. Kh1 Rb2 {( -> ...Nf3)} 53. Rda1 Rxb3 54. R4a3 Rb4 {Accuracy: White = 48%, Black = 64%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.1"]
[White "Low, Zhen Yu Cyrus"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2415"]
[BlackElo "2491"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,46,-4,0,15,15,10,8,7,7,15,5,10,0,0,9,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. Be2 Qb6 10. Nd1 {The position is equal.} cxd4 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4} 11. Nxd4 Nxd4 12. Bxd4 Bc5 13. c3 b4 14. O-O a5 15. Kh1 O-O 16. Ne3 f6 17. exf6 Nxf6 {[#]} 18. Ng4 $146 ({Predecessor:} 18. Bf3 Ba6 19. Rfe1 Ne4 20. Bxe4 dxe4 21. Ng4 Bxd4 22. cxd4 Bd3 23. Nf2 Rad8 24. Nxe4 Rxd4 {½-½ (60) Ahmadinia,E (2195)-Mohajerin Esfahani,P (2334) Teheran 2005}) 18... Ne4 19. Qe3 $1 Ba6 20. Bxa6 Bxd4 21. cxd4 Qxa6 22. Nf2 Nxf2+ 23. Rxf2 Rac8 {Accuracy: White = 100%, Black = 100%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.2"]
[White "Stankovic, Milos"]
[Black "Budnikov, Oleg"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2466"]
[BlackElo "2432"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,102,27,26,33,10,16,22,11,21,14,10,129,-6,-5,-14,-24,-17,-22,-21,-22,-37,0,0,0,0,0,-36,-7,-74,-62,-60,-49,-96,-96,-98,-90,-193,-187,-169,-82,-81,-89,-89,-77,-77,-87,-148,-104,-95,-27,-109,-92,-199,-105,-117,-114,-109,-115,-111,-59,-61,-65,-95,-97,-104,-100,-97,-97,-102,-102,-593,-593,-777,-772,-733,-742,-4133,-1229,-29984,-29985,-29985,-29986,-29986,-29987,-29990,-29988,-29988,-29989,-29989,-29990,-29990,-29991]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. Nf3 c6 6. Bd3 O-O 7. Qd2 b5 {[%cal Bb7b5,Bb5b4][%mdl 32] B08: Pirc Defence: Classical System} 8. a4 b4 9. Ne2 a5 {The position is equal.} 10. Bh6 Bg4 11. Ng3 Qb6 $146 (11... Nbd7 $11) ({Predecessor:} 11... Nbd7 12. h4 e5 13. dxe5 dxe5 14. h5 Bxf3 15. gxf3 Bxh6 16. Qxh6 Kh8 17. hxg6 fxg6 18. Qxg6 {1-0 (24) Ni,H (2611)-Rahman,Z (2535) Kolkata 2004}) 12. Bxg7 (12. Nf5 $1 $16 Bxf5 13. exf5) 12... Kxg7 $11 13. Qg5 {Hoping for e5.} h6 14. Qe3 Nbd7 15. h3 Bxf3 $1 16. gxf3 e5 17. Rg1 {White threatens Nf5+! and mate.} Kh7 18. dxe5 dxe5 19. Bc4 Rad8 20. O-O-O (20. h4 $11 {remains equal.}) 20... Qc7 $1 $17 21. h4 {Black should prevent h5!} Nb6 22. Qb3 {Strongly threatening Rxd8.} Rd4 $1 {[%cal Rd4c4]} ({But not} 22... Nxc4 23. Qxc4 Qa7 24. Qe2 $11) 23. Rxd4 exd4 24. h5 (24. Ne2 $17 {is a better defense.}) 24... Nxh5 25. Nxh5 {And now Ng3 would win.} gxh5 (25... Qh2 $1 $19 {[%cal Rh2g1] is more deadly.} 26. Rd1 (26. Nf6+ Kg7 $17) 26... Qxh5) 26. Kb1 Qh2 27. Rd1 Kg7 ({Don't play} 27... Qxf2 $6 28. Bxf7 h4 29. Qe6 $1 $11 {[%mdl 512]}) 28. Rxd4 Qxf2 29. Qd3 ({Better is} 29. Rd1) 29... Nxa4 30. Qd1 Qg3 (30... Nb6 $17 31. Rd2 Qc5 32. Rg2+ Kf6) 31. f4 (31. Qd2 $11 {keeps the balance.} Nb6 32. Ba6) 31... Nb6 32. Bd3 (32. Ba6 $17 {keeps fighting.}) 32... Qxf4 (32... Re8 $19 33. Be2 Qxf4 34. Bxh5 Re5) 33. Qxh5 Qg5 34. Qh2 {[#]} Re8 $1 35. Rd6 a4 (35... Na4 $17 36. Rxc6 Nc5) 36. Qf2 $15 Qe5 37. Qg1+ {[#]} Kf8 $1 38. Rxc6 a3 {[%csl Ga3][%cal Re5b2]} 39. Qc1 Na4 $40 {[%cal Ra4b2][%mdl 128] Black is out for blood.} 40. Qxh6+ Ke7 {[%csl Ga3,Ga4][%cal Re5b2]} 41. c3 $2 {[%mdl 8192]} (41. Qh4+ $17 {was the crucial defense.} Kd7 42. Qf6 Nxb2 43. Bb5 Qxf6 44. Rxf6+ Ke7 45. Rf5) 41... Rh8 $19 42. Qe3 {Black must now prevent Qa7+.} Rh1+ 43. Ka2 axb2 44. Kb3 Nxc3 (44... bxc3 $142 45. Qa7+ Kf8) 45. Rc5 b1=Q+ {Black mates.} 46. Bxb1 Rxb1+ 47. Kc2 Qh2+ 48. Kd3 Rd1+ 49. Kc4 Qa2+ 50. Kxb4 Qa4+ 51. Kxc3 Qa3+ {Accuracy: White = 28%, Black = 49%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.3"]
[White "Lalic, Bogdan"]
[Black "Laxman, R.R."]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2402"]
[BlackElo "2441"]
[Annotator "ChessBase"]
[PlyCount "14"]
[EventDate "2020.01.10"]
[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. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:13]} 4. Bg5 {[%emt 0:00:06]} Be7 {[%emt 0:00:18]} 5. Nc3 {[%emt 0:00:10]} h6 {[%emt 0:00:20]} 6. Bxf6 {[%emt 0:00:07]} Bxf6 {[%emt 0:00:04]} 7. e3 {[%emt 0:00:09]} O-O {[%emt 0:00:19]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.4"]
[White "Vokac, Marek"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "A61"]
[WhiteElo "2334"]
[BlackElo "2380"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,84,44,49,80,60,66,66,65,77,76,68,96,18,24,9,6,0,3,0,0,0,2,0,0,0,0,-22,-25,-26,0,0,0,-2,-2,-2,-2,-3,0,0,0,0,0,-68,-74,-75,-69,-68,-61,-68,-44,-58,-58,-59,-59,-146,-137,-169,-168,-29980,-29981,-29981,-29982,-29981,-29982]} 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Nd2 Nbd7 8. e4 Bg7 9. Be2 O-O 10. O-O Re8 11. h3 a6 12. a4 $1 g5 {A77: Modern Benoni: Classical: 9...Re8 10 Nd2: 10...a6 and 10...Nbd7} (12... Rb8 13. a5 b5 14. axb6 Nxb6 15. Bd3 g5 16. f4 gxf4 17. Rxf4 Nbd7 18. Nc4 Ne5 19. Nxe5 Rxe5 20. Rf3 Nd7 {1-0 (43) Hammer,J (2701)-Hou,Y (2667) Fagernes 2016}) 13. Nc4 Nxe4 14. Nxe4 Rxe4 {White is slightly better.} 15. Nxd6 Rd4 16. Qc2 $1 Ne5 {[#]} 17. Nxc8 $146 (17. Qxc5 $16 b6 18. Qa3 (18. Qxd4 Nf3+ 19. Bxf3 Bxd4 $11) (18. Bxg5 $2 Qxg5 19. Qc1 Qd8 $19)) ({Predecessor:} 17. Nf5 Bxf5 18. Qxf5 Rxd5 19. Bxg5 Qxg5 20. Qxg5 {1-0 (55) Damljanovic,B (2583)-Ilic,S (2030) Belgrade 2015}) 17... Rxc8 $11 18. Be3 Rxd5 19. Rad1 h6 20. Qe4 Rxd1 21. Rxd1 Qe7 22. Rd5 c4 23. Bg4 Rd8 24. Bf5 Rxd5 25. Qxd5 Nc6 26. Qxc4 Bxb2 27. Be4 {[#]} Bd4 $1 {[%mdl 512]} 28. Bxc6 (28. Bxd4 Qxe4) 28... Bxe3 29. Bd5 Bc5 {White must now prevent ...Qe1+.} 30. Bxf7+ Kg7 {( -> ...Qe1+)} 31. Be6 Kf6 {And now ...Ba7 would win.} 32. Kf1 (32. Qd5 $1 $11) 32... Bxf2 $1 $15 33. Kxf2 {Bg4 is the strong threat.} Qxe6 {[%mdl 4096] Endgame KQ-KQ} 34. Qd4+ Kg6 35. Kg1 b5 36. Qd3+ Kg7 37. Qd4+ Kf7 38. axb5 ({Better is} 38. a5 $15) 38... axb5 $17 39. Qa7+ Kg6 40. Qb8 $2 {[#]} (40. Qd4 $19) 40... Qe3+ $1 {Black mates.} 41. Kf1 {[#]} Qf4+ $1 42. Qxf4 gxf4 {Accuracy: White = 44%, Black = 70%.} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.5"]
[White "Strebkovs, Andrejs"]
[Black "Cernousek, Lukas"]
[Result "1/2-1/2"]
[ECO "B18"]
[WhiteElo "2278"]
[BlackElo "2447"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,100,11,22,9,6,4,0,4,18,14,14,1,2,1,2,4,4,0,18,19,40,12,14,0,0,0,5,7,10,10,19,8,29,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-4,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nh3 Nd7 7. Nf4 {B18: Classical Caro-Kann: 4...Bf5 sidelines} (7. Bc4 e6 8. Nf4 Bd6 9. Nxg6 hxg6 10. Ne4 Be7 11. c3 Ngf6 12. Ng5 Nh7 13. Nf3 Ng5 14. Bf4 Nxf3+ 15. Qxf3 Nb6 16. Bb3 Nd5 17. Be5 Bf6 18. Bg3 Bh4 19. Be5 Bf6 20. Bg3 Bh4 21. Be5 Bf6 {½-½ (21) Popov,I (2599)-Dreev,A (2657) Yaroslavl 2019}) 7... e5 8. Nxg6 hxg6 9. dxe5 Nxe5 10. Qxd8+ Rxd8 11. Be2 Bb4+ $146 ({Predecessor:} 11... Nf6 12. Bg5 Be7 13. Bxf6 gxf6 14. f4 Nd7 {0-1 (38) Bocina,D (2155)-Nikolac,J (2460) Pula 1993}) 12. c3 Ba5 13. Bf4 Bc7 14. Rd1 Rxd1+ (14... Nf6 {feels hotter.} 15. O-O Rxd1 16. Rxd1 Nf3+ 17. Bxf3 Bxf4 18. Nf1 Bc7) 15. Kxd1 Rh4 16. Bxe5 (16. Bg5 $5 {[%cal Rg5h4]} Ra4 17. Kc2 $11) 16... Bxe5 17. Bf3 Bxg3 18. Re1+ Ne7 19. hxg3 $11 {[%mdl 4096] Endgame KRB-KRN} Rh2 20. b4 a6 21. a4 f5 22. b5 axb5 {The position is equal.} 23. axb5 Kd7 24. Kc2 g5 25. bxc6+ bxc6 26. g4 g6 27. Re2 Kd6 28. Rd2+ Ke5 29. gxf5 gxf5 30. g3 Ke6 31. Kb3 g4 32. Bd1 Ng6 33. Kc4 Ne5+ 34. Kd4 Kf6 35. Ra2 Rh8 {[#] Threatens to win with ...Rd8+.} 36. Be2 Rd8+ 37. Ke3 c5 38. Ra5 Re8 39. Kd2 Rd8+ 40. Ke3 Re8 41. Kd2 Rc8 42. Ra6+ Kg5 43. Re6 Nd7 44. f4+ gxf3 $1 45. Bxf3 c4 46. Ke3 Nc5 47. Re5 Nd3 (47... Kf6 $5 48. Rd5 $8 Re8+ 49. Kd4 Ne6+ 50. Kxc4 Rc8+ 51. Kb4 Rg8 $11) 48. Rb5 Nc5 49. Kd4 Nb3+ 50. Ke3 Nc5 {Accuracy: White = 63%, Black = 71%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.6"]
[White "Vignesh B"]
[Black "Quesada Vera, Liordis"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "1912"]
[BlackElo "2386"]
[Annotator "ChessBase"]
[PlyCount "82"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. Bc4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 4. d3 {[%emt 0:00:00]} h6 {[%emt 0:01:17]} 5. O-O {[%emt 0:00:21]} d6 {[%emt 0:00:06]} 6. c3 {[%emt 0:00:05]} g5 {[%emt 0:00:08]} 7. Bb3 {[%emt 0:00:23]} Bg7 {[%emt 0:00:12]} 8. Nbd2 {[%emt 0:00:12]} O-O {[%emt 0:01:16]} 9. Nc4 {[%emt 0:00:24]} Ne7 {[%emt 0:11:09]} 10. Re1 {[%emt 0:05:44]} b5 {[%emt 0:18:25]} 11. Ne3 {[%emt 0:00:11]} Rb8 {[%emt 0:00:15]} 12. h4 {[%emt 0:03:36]} g4 {[%emt 0:07:23]} 13. Nh2 {[%emt 0:00:02]} Kh7 {[%emt 0:00:21]} 14. d4 {[%emt 0:10:45]} Qd7 {[%emt 0:14:47]} 15. dxe5 {[%emt 0:18:49]} dxe5 {[%emt 0:00:09]} 16. Qxd7 {[%emt 0:01:47]} Bxd7 {[%emt 0:00:08]} 17. Nf5 {[%emt 0:00:08]} Nc8 {[%emt 0:19:01]} 18. Bd1 {[%emt 0:09:47]} h5 {[%emt 0:03:22]} 19. f3 {[%emt 0:00:19]} gxf3 {[%emt 0:00:39]} 20. Nxf3 {[%emt 0:00:53]} Ng4 {[%emt 0:00:57]} 21. Nh2 {[%emt 0:00:59]} Nxh2 {[%emt 0:06:56]} 22. Kxh2 {[%emt 0:00:02]} Bxf5 {[%emt 0:11:46]} 23. exf5 {[%emt 0:00:02]} Nd6 {[%emt 0:00:22]} 24. Rf1 {[%emt 0:02:16]} Bf6 {[%emt 0:00:09]} 25. Bxh5 {[%emt 0:08:25]} Bxh4 {[%emt 0:01:40]} 26. Rf3 {[%emt 0:00:13]} Rh8 {[%emt 0:00:57]} 27. Rh3 {[%emt 0:00:24]} Nxf5 {[%emt 0:00:28]} 28. g3 {[%emt 0:13:25]} Kg7 {[%emt 0:01:14]} 29. Bg4 {[%emt 0:00:01]} Nxg3 {[%emt 0:00:36]} 30. Rxg3 {[%emt 0:00:01]} Bxg3+ {[%emt 0:00:10]} 31. Kxg3 {[%emt 0:00:02]} Kg6 {[%emt 0:00:13]} 32. Bf3 {[%emt 0:08:37]} f5 {[%emt 0:00:01]} 33. Bd2 {[%emt 0:01:53]} Rbd8 {[%emt 0:00:13]} 34. Rd1 {[%emt 0:01:51]} Rd3 {[%emt 0:01:04]} 35. Be1 {[%emt 0:01:00]} Rxd1 {[%emt 0:01:15]} 36. Bxd1 {[%emt 0:00:02]} Rh1 {[%emt 0:00:08]} 37. Kf2 {[%emt 0:00:01]} e4 {[%emt 0:00:37]} 38. a4 {[%emt 0:01:46]} a6 {[%emt 0:00:35]} 39. axb5 {[%emt 0:01:28]} axb5 {[%emt 0:00:01]} 40. Bb3 {[%emt 0:00:08]} f4 {[%emt 0:00:32]} 41. c4 {[%emt 0:30:06]} Rh2+ {[%emt 0:30:22]} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.7"]
[White "Neuman, Petr"]
[Black "Malovanyi, Yulian"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2371"]
[BlackElo "2360"]
[Annotator "ChessBase"]
[PlyCount "85"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:06:41]} c5 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:19]} g6 {[%emt 0:02:08]} 3. d4 {[%emt 0:00:08]} cxd4 {[%emt 0:00:54]} 4. Qxd4 {[%emt 0:00:08]} Nf6 {[%emt 0:00:23]} 5. Nf3 {[%emt 0:02:57]} Nc6 {[%emt 0:00:16]} 6. Qa4 {[%emt 0:00:09]} d6 {[%emt 0:05:46]} 7. e5 {[%emt 0:01:36]} dxe5 {[%emt 0:01:01]} 8. Nxe5 {[%emt 0:00:06]} Bg7 {[%emt 0:02:11]} 9. Bb5 {[%emt 0:03:24]} O-O {[%emt 0:02:06]} 10. Nxc6 {[%emt 0:00:21]} bxc6 {[%emt 0:00:08]} 11. Bxc6 {[%emt 0:00:04]} Bd7 {[%emt 0:10:23]} 12. O-O {[%emt 0:05:50]} Bxc6 {[%emt 0:10:20]} 13. Qxc6 {[%emt 0:02:00]} Rc8 {[%emt 0:00:41]} 14. Qa6 {[%emt 0:01:26]} Qc7 {[%emt 0:03:50]} 15. h3 {[%emt 0:01:40]} Rfd8 {[%emt 0:02:10]} 16. Be3 {[%emt 0:00:52]} Nd5 {[%emt 0:01:32]} 17. Nxd5 {[%emt 0:06:10]} Rxd5 {[%emt 0:00:03]} 18. c3 {[%emt 0:03:34]} Ra5 {[%emt 0:00:14]} 19. Qe2 {[%emt 0:00:37]} Rb8 {[%emt 0:00:09]} 20. Rfd1 {[%emt 0:03:25]} h5 {[%emt 0:02:48]} 21. Rd2 {[%emt 0:06:50]} Rab5 {[%emt 0:04:25]} 22. Rad1 {[%emt 0:08:02]} Qb7 {[%emt 0:01:12]} 23. Rd7 {[%emt 0:07:40]} Qe4 {[%emt 0:01:15]} 24. b3 {[%emt 0:04:11]} a5 {[%emt 0:04:08]} 25. c4 {[%emt 0:04:17]} Rb4 {[%emt 0:00:40]} 26. Qd3 {[%emt 0:02:27]} Qxd3 {[%emt 0:00:38]} 27. R1xd3 {[%emt 0:00:06]} a4 {[%emt 0:00:47]} 28. Rd8+ {[%emt 0:03:56]} Rxd8 {[%emt 0:00:09]} 29. Rxd8+ {[%emt 0:00:09]} Kh7 {[%emt 0:00:04]} 30. Rd3 {[%emt 0:02:26]} e5 {[%emt 0:00:18]} 31. Bc5 {[%emt 0:02:19]} Rb7 {[%emt 0:00:48]} 32. b4 {[%emt 0:01:14]} e4 {[%emt 0:00:10]} 33. Rd5 {[%emt 0:00:19]} f5 {[%emt 0:01:29]} 34. g3 {[%emt 0:02:29]} h4 {[%emt 0:00:27]} 35. gxh4 {[%emt 0:00:30]} f4 {[%emt 0:00:10]} 36. b5 {[%emt 0:00:31]} Bf6 {[%emt 0:00:53]} 37. Bd4 {[%emt 0:02:17]} Bxh4 {[%emt 0:00:37]} 38. b6 {[%emt 0:00:39]} e3 {[%emt 0:00:45]} 39. fxe3 {[%emt 0:00:28]} f3 {[%emt 0:00:08]} 40. Ra5 {[%emt 0:03:09]} f2+ {[%emt 0:00:27]} 41. Kf1 {[%emt 0:30:08]} Kh6 {[%emt 0:30:23]} 42. Ra7 {[%emt 0:00:45]} Rb8 {[%emt 0:00:05]} 43. Rf7 {[%emt 0:00:24]} 1-0

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.8"]
[White "Ludvik, Tomas"]
[Black "Peng, Hongchi"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "2272"]
[BlackElo "2362"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,130,12,7,0,16,16,17,12,12,14,39,33,51,44,45,48,62,10,33,24,30,35,97,89,147,105,158,102,98,88,98,95,87,92,105,29,37,10,14,0,18,21,21,24,21,2,49,0,8,0,0,0,12,11,15,16,37,2,4,4,22,0,56,0,2,-17,19,26,19,8,20,-54,-47,-51,-54,-57,0,0,0,-91,-85,-84,-52,-92,-56,-52,-32,-122,-116,-126,-149,-221,-213,-457,-474,-508,-518,-526,-512,-708,-730,-695,-670,-705,-662,-1476,-1275,-3095,-1695,-2666,-2231,-3406,-2250,-29965,-29965,-29985,-29986,-29983,-29984,-29990,-29991,-29991,-29987]} 1. d4 f5 2. Bg5 Nf6 3. e3 b6 4. Nd2 e6 5. Ngf3 Bb7 6. Bd3 {A80: Dutch Defence: Unusual White second moves} Be7 7. Bxf6 Bxf6 8. e4 {The position is equal.} g6 (8... fxe4 9. Bxe4 d5 10. Bd3 O-O 11. O-O Nc6 12. c3 Qd6 13. Re1 {0-1 (36) Andreikin,D (2705)-Kamsky,G (2676) Sochi 2017}) 9. Qe2 Qe7 10. c3 fxe4 $146 ({Predecessor:} 10... Nc6 11. Ba6 Bxa6 12. Qxa6 O-O 13. O-O {½-½ (65) Nikolaidis,I (2531)-Grivas,E (2489) Glyfada 2001}) 11. Nxe4 Bg7 12. h4 Nc6 13. a4 (13. h5 $14) 13... a5 14. h5 O-O-O 15. h6 Bf6 (15... Bf8 $1 $14) 16. Ba6 $16 ({But not} 16. Nxf6 $6 Qxf6 17. Ba6 Rhf8 $11) 16... Nb8 (16... Rhf8 $142) 17. Bxb7+ Kxb7 {[#]} 18. O-O (18. b4 $142 $1) 18... Nc6 19. Rfb1 Ra8 20. Qb5 Na7 21. Qd3 d5 22. Ned2 ({White should play} 22. b4 $16 Nc6 23. b5) 22... Nc6 $11 23. Re1 Qd6 24. Nb3 e5 25. dxe5 Nxe5 26. Nxe5 Bxe5 27. Rad1 Rhd8 28. Qf3 Qf6 (28... c6 {is more complex.} 29. c4 Rf8 30. Qg4 Rae8 31. g3 d4) 29. Qxf6 (29. Nd2 {is interesting.} Rd7 30. g3 Rad8 31. Kg2 Re7 32. Qxf6 Bxf6 33. Rxe7 Bxe7 34. Nf3) 29... Bxf6 30. f4 Rd6 31. Nd4 Rf8 32. g3 Rf7 33. Nb5 Rdd7 34. Re6 Be7 35. Kg2 g5 (35... Bf8 $11) 36. Rf1 ({White should try} 36. Nd4 $14) 36... gxf4 37. gxf4 c6 38. Nd4 c5 39. Nb5 d4 40. cxd4 (40. Kf3 $11) 40... cxd4 $15 41. Kf3 d3 42. Rd1 Rf8 (42... d2 $15) 43. Ke4 $11 d2 {[#]} 44. f5 (44. Rxd2 $1 $11 {[%mdl 512]} Rxd2 45. Rxe7+ {[%mdl 64] Double Attack} Kb8 46. Rxh7) 44... Bb4 $17 45. f6 Rfd8 46. Re5 Bf8 47. Nc3 Kc6 48. Re6+ (48. Kf3 $15) 48... Kc5 49. Kf5 Bxh6 50. Re7 (50. Kg4 $17) 50... Kc4 $19 51. Rxd7 $2 (51. Ke6 {might work better.} Rd6+ 52. Kf5) 51... Rxd7 {[%mdl 4096] Endgame KRB-KRN} 52. Ke6 Rd3 53. Rh1 Bf8 54. Kf7 Bb4 55. Nd1 Rf3 56. Kg7 Kd3 57. f7 Ke2 58. Kg8 {[#]} h5 $1 {[%mdl 512]} 59. Kg7 {[#]} (59. Rxh5 Kxd1) 59... h4 $1 {[%mdl 512]} 60. Kg8 (60. Rxh4 Kxd1) 60... h3 61. b3 Bd6 {Played: Rf3-f1} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.9"]
[White "Priehoda, Vitezslav"]
[Black "Czerw, Dawid"]
[Result "1/2-1/2"]
[ECO "E53"]
[WhiteElo "2341"]
[BlackElo "2262"]
[Annotator "ChessBase"]
[PlyCount "42"]
[EventDate "2020.01.10"]
[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. Nc3 {[%emt 0:00:00]} Bb4 {[%emt 0:00:00]} 4. e3 {[%emt 0:00:00]} O-O {[%emt 0:00:10]} 5. Bd3 {[%emt 0:01:51]} d5 {[%emt 0:01:40]} 6. Nf3 {[%emt 0:01:28]} c5 {[%emt 0:00:54]} 7. O-O {[%emt 0:00:24]} cxd4 {[%emt 0:01:53]} 8. exd4 {[%emt 0:00:12]} dxc4 {[%emt 0:01:51]} 9. Bxc4 {[%emt 0:00:06]} Nc6 {[%emt 0:06:23]} 10. a3 {[%emt 0:10:58]} Be7 {[%emt 0:01:09]} 11. Be3 {[%emt 0:00:16]} b6 {[%emt 0:05:06]} 12. Rc1 {[%emt 0:09:06]} Bb7 {[%emt 0:02:10]} 13. Ba2 {[%emt 0:01:14]} Rc8 {[%emt 0:03:35]} 14. Qe2 {[%emt 0:04:26]} Qd6 {[%emt 0:11:56]} 15. Rfd1 {[%emt 0:03:27]} Qb8 {[%emt 0:03:56]} 16. Bg5 {[%emt 0:14:53]} Rfe8 {[%emt 0:09:23]} 17. Ne5 {[%emt 0:34:24]} Nxe5 {[%emt 0:07:38]} 18. dxe5 {[%emt 0:00:04]} Nd5 {[%emt 0:00:48]} 19. Bxd5 {[%emt 0:02:18]} Bxg5 {[%emt 0:03:55]} 20. Bxb7 {[%emt 0:00:07]} Qxb7 {[%emt 0:01:54]} 21. Rb1 {[%emt 0:00:05]} Be7 {[%emt 0:04:48]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.10"]
[White "Sharma Isha"]
[Black "Domogaev, Sergey"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2169"]
[BlackElo "2334"]
[Annotator "ChessBase"]
[PlyCount "41"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:01:15]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:17]} Nc6 {[%emt 0:00:00]} 3. Bc4 {[%emt 0:00:09]} Bc5 {[%emt 0:00:00]} 4. c3 {[%emt 0:00:09]} Nf6 {[%emt 0:00:00]} 5. d3 {[%emt 0:00:03]} d6 {[%emt 0:00:00]} 6. Nbd2 {[%emt 0:00:06]} a6 {[%emt 0:00:08]} 7. Bb3 {[%emt 0:00:04]} O-O {[%emt 0:01:24]} 8. Nf1 {[%emt 0:01:03]} d5 {[%emt 0:04:44]} 9. Qe2 {[%emt 0:02:43]} Ng4 {[%emt 0:11:01]} 10. exd5 {[%emt 0:06:08]} Na5 {[%emt 0:00:39]} 11. Ne3 {[%emt 0:05:42]} Nxb3 {[%emt 0:00:29]} 12. axb3 {[%emt 0:00:08]} Nxe3 {[%emt 0:00:09]} 13. Bxe3 {[%emt 0:00:06]} Bxe3 {[%emt 0:00:22]} 14. Qxe3 {[%emt 0:01:34]} Qxd5 {[%emt 0:00:09]} 15. O-O {[%emt 0:00:11]} Re8 {[%emt 0:10:01]} 16. b4 {[%emt 0:01:02]} b6 {[%emt 0:17:33]} 17. d4 {[%emt 0:02:00]} e4 {[%emt 0:01:03]} 18. Rfe1 {[%emt 0:00:10]} Bb7 {[%emt 0:00:42]} 19. Nd2 {[%emt 0:00:19]} f5 {[%emt 0:01:34]} 20. f3 {[%emt 0:07:24]} Rad8 {[%emt 0:05:44]} 21. fxe4 {[%emt 0:03:32]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.11"]
[White "Otruba, Marek"]
[Black "Chyzy, Jakub"]
[Result "0-1"]
[ECO "A53"]
[WhiteElo "2091"]
[BlackElo "2291"]
[Annotator "ChessBase"]
[PlyCount "66"]
[EventDate "2020.01.10"]
[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]} d6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} Nbd7 {[%emt 0:00:00]} 4. e4 {[%emt 0:00:25]} e5 {[%emt 0:00:00]} 5. Nf3 {[%emt 0:00:47]} g6 {[%emt 0:00:13]} 6. Be2 {[%emt 0:00:22]} Bg7 {[%emt 0:00:08]} 7. Bg5 {[%emt 0:03:41]} h6 {[%emt 0:03:30]} 8. Be3 {[%emt 0:00:23]} O-O {[%emt 0:01:01]} 9. d5 {[%emt 0:02:47]} Ng4 {[%emt 0:06:49]} 10. Bd2 {[%emt 0:00:24]} f5 {[%emt 0:01:34]} 11. exf5 {[%emt 0:01:03]} gxf5 {[%emt 0:00:25]} 12. h3 {[%emt 0:00:43]} Ngf6 {[%emt 0:07:41]} 13. Qc1 {[%emt 0:00:34]} f4 {[%emt 0:11:32]} 14. g3 {[%emt 0:02:40]} Nh5 {[%emt 0:11:13]} 15. g4 {[%emt 0:10:37]} Nhf6 {[%emt 0:02:13]} 16. g5 {[%emt 0:00:46]} Nh7 {[%emt 0:03:00]} 17. gxh6 {[%emt 0:03:55]} Bxh6 {[%emt 0:00:16]} 18. Bd3 {[%emt 0:10:50]} Nc5 {[%emt 0:01:47]} 19. Bc2 {[%emt 0:05:37]} e4 {[%emt 0:06:40]} 20. Qb1 {[%emt 0:03:15]} Qe7 {[%emt 0:06:17]} 21. Nd4 {[%emt 0:05:47]} e3 {[%emt 0:05:20]} 22. Rg1+ {[%emt 0:10:20]} Kh8 {[%emt 0:01:07]} 23. Rg6 {[%emt 0:00:32]} exd2+ {[%emt 0:01:59]} 24. Kxd2 {[%emt 0:00:16]} f3+ {[%emt 0:02:27]} 25. Kd1 {[%emt 0:00:50]} Bg7 {[%emt 0:07:18]} 26. Ne6 {[%emt 0:01:43]} Nxe6 {[%emt 0:02:23]} 27. dxe6 {[%emt 0:00:09]} Bxe6 {[%emt 0:01:09]} 28. Rxe6 {[%emt 0:01:27]} Qxe6 {[%emt 0:00:07]} 29. Bxh7 {[%emt 0:00:05]} Bxc3 {[%emt 0:00:44]} 30. bxc3 {[%emt 0:00:09]} Qe2+ {[%emt 0:02:17]} 31. Kc1 {[%emt 0:00:05]} Qxf2 {[%emt 0:00:35]} 32. Qg6 {[%emt 0:00:29]} Rae8 {[%emt 0:00:57]} 33. Qh6 {[%emt 0:00:23]} Re1# {[%emt 0:00:07]} 0-1

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.12"]
[White "Sindler, Michal"]
[Black "Svanda, Ondrej"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2119"]
[BlackElo "2257"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,83,8,22,14,14,0,8,0,18,11,14,21,20,23,27,22,15,-60,-47,-41,-11,-66,-50,-62,-57,-117,-113,-133,-128,-200,-190,-181,-104,-111,-63,-70,-70,-71,-65,-78,-48,-48,-48,-48,-57,-57,-59,-70,-70,-70,-70,-70,-70,-70,-71,-72,-56,-77,-15,-10,-10,-12,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 Nf6 5. Bg2 Be7 6. O-O O-O 7. Re1 d6 8. c3 Bd7 9. Nbd2 Qc7 10. a3 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6} (10. Nf1 Ne5 11. Nh4 Ng6 12. Nxg6 hxg6 13. d4 cxd4 14. cxd4 e5 15. Ne3 Rac8 16. a4 Qb6 17. d5 Qd4 {0-1 (44) Ter Sahakyan,S (2601)-Vitiugov,N (2725) Baku 2015}) 10... Ne5 11. Nxe5 dxe5 12. a4 Bc6 13. Nc4 Nd7 14. f4 exf4 15. Bxf4 e5 16. Bd2 Rfd8 $146 ({Predecessor:} 16... Rad8 17. Ne3 Nf6 18. Qe2 g6 19. c4 Nh5 20. Nd5 {½-½ (20) Zuckerman,B-Burger,K New York 1969}) 17. Qf3 (17. Ne3 $11) 17... Nb6 $1 $15 {[%cal Rb6c4] [#] Threatens to win with ...Nxc4.} 18. Ne3 Bxa4 19. Nd5 (19. c4 $11) 19... Nxd5 20. exd5 Bd7 21. d6 (21. Qe2 $15) 21... Qxd6 $17 22. Qxb7 Rab8 23. Qe4 (23. Qd5 $17) 23... Rxb2 $19 24. Bc1 Rb6 ({Don't do} 24... Rxg2+ 25. Qxg2 Qxd3 26. Rxa7 $15) (24... Rc2 $19 25. Bf3 Be6) 25. d4 Bc6 26. Qxe5 Qxe5 27. Rxe5 Bd6 28. Re2 Bxg2 29. Kxg2 cxd4 30. cxd4 Ra8 31. Rea2 a6 32. Ba3 g6 33. Bc5 Rc6 34. Bxd6 Rxd6 $15 {[%mdl 4096] Endgame KRR-KRR} 35. Kf3 Kg7 36. Ke4 f5+ 37. Kd3 g5 ({Black should play} 37... Rad8 $17 38. Ra4 R8d7) 38. Ra5 $11 {The position is equal.} Kg6 39. d5 Kh5 40. Kd4 Rad8 41. R1a2 h6 42. Ke5 {Accuracy: White = 46%, Black = 55%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.13"]
[White "Llopis de Aysa, Manuel"]
[Black "Riha, Vojtech"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2066"]
[BlackElo "2247"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,92,16,39,31,16,32,50,44,52,30,57,47,46,46,58,42,71,84,125,125,184,172,170,187,181,183,195,155,178,182,191,137,137,75,77,75,75,63,64,66,178,235,238,223,191,245,249,56,96,0,166,152,145,104,115,119,130,45,66,0,0,0,0,0,0,0,0,0,616,249,214,0,15,0,0]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. d5 a5 8. Bg5 h6 9. Be3 Ng4 10. Bc1 f5 11. exf5 {E92: King's Indian: Classical: 6 Be2 e5: 7 dxe5, 7 Be3 and Petrosian System without 7...Nbd7} gxf5 12. g3 Na6 13. Nh4 {White is slightly better.} Nc5 14. O-O (14. f3 $5 {[%cal Rf3g4]} Nf6 15. Be3 $11) 14... Nf6 (14... e4 15. Bxg4 fxg4 16. Be3 Bd7 17. Bxc5 dxc5 18. Nxe4 Bd4 19. Qc2 {½-½ (19) Khenkin,I (2551)-Amin,B (2698) Germany 2017}) 15. f4 e4 16. Be3 Kh7 17. h3 {[#]} Qe7 $146 ({Predecessor:} 17... Bd7 18. Rf2 Qe7 {1-0 (26) Zvjaginsev,V (2590)-Cvitan,O (2535) Vienna 1996}) 18. Nb5 Bd7 19. Nd4 $1 Ne8 (19... Qd8 $16) 20. Bh5 $18 Bxd4 21. Bg6+ $1 (21. Qxd4 $6 Rg8 $11) 21... Kg8 22. Bxd4 Ng7 23. Re1 b6 24. b3 c6 25. Bb2 (25. dxc6 $18 Be6 26. Re3) 25... cxd5 $16 26. Qxd5+ (26. cxd5 $142 b5 27. Bd4) 26... Be6 27. Qd4 $36 {[%mdl 2048] Keeping Black busy.} Nd3 28. Re2 Nxb2 29. Rxb2 Rf6 ({Black should play} 29... d5 $14) 30. Rd1 $18 (30. Qxb6 Rxg6 31. Nxg6 Qf6 $11) 30... Rd8 31. Rbd2 Bc8 32. Qxb6 Bb7 33. Re2 $2 ({White should try} 33. Qxa5 $18 Ra8 34. Qc3) 33... d5 $14 34. Qe3 (34. Qxa5 $16 Rdd6 35. cxd5) 34... dxc4 $2 (34... Qd6 $11 35. Red2 Rxg6 36. Rxd5 Bxd5 37. Rxd5 {[%mdl 64] Double Attack} Re6 38. Rxd6 Rexd6) 35. Rxd8+ $18 Qxd8 36. Rd2 Rd6 37. Rxd6 Qxd6 {[#]} 38. bxc4 ({Much weaker is} 38. Nxf5 $6 Nxf5 39. Bxf5 Qd1+ 40. Kg2 Qc2+ 41. Kf1 c3 $11) (38. Qa7 $1 $16 {[%cal Ra7b7]} Qd1+ 39. Kh2) 38... Qd1+ $14 39. Kg2 (39. Kh2 $1 $14) 39... Qc2+ $11 40. Kg1 {Black must now prevent Qa7!} Qb1+ ({Not} 40... Qxa2 $2 41. Qb6 $18) 41. Kh2 {Threatens to win with Qa7.} Qxa2+ {[%mdl 64] Double Attack} 42. Ng2 {aiming for Qb6.} Qxc4 43. Qb6 {[%mdl 64] Double Attack} Qb4 $2 {[%mdl 8192]} (43... Qd5 $11 44. Qc7 Kf8 45. Qb8+ Ke7) 44. Qd8+ (44. Qc7 $142) 44... Qf8 $18 {[#]} 45. Qxa5 $2 (45. Bh7+ $1 $18 {[%mdl 512]} Kf7 (45... Kxh7 46. Qxf8) 46. Qb6 (46. Qxa5 Qd6 $16)) 45... Qf6 46. Qc7 {Qb8+ is the strong threat.} Qxg6 {Accuracy: White = 51%, Black = 43%.} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.14"]
[White "Nemec, Jachym"]
[Black "Pushkov, Nikolai"]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "1988"]
[BlackElo "2239"]
[Annotator "ChessBase"]
[PlyCount "69"]
[EventDate "2020.01.10"]
[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 0:00:14]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:10]} b6 {[%emt 0:01:11]} 4. g3 {[%emt 0:00:06]} Ba6 {[%emt 0:00:20]} 5. Nbd2 {[%emt 0:00:14]} d5 {[%emt 0:00:47]} 6. Bg2 {[%emt 0:01:56]} Be7 {[%emt 0:00:18]} 7. Qa4+ {[%emt 0:09:34]} c6 {[%emt 0:01:00]} 8. Ne5 {[%emt 0:01:13]} Bb7 {[%emt 0:07:10]} 9. Ndf3 {[%emt 0:10:17]} O-O {[%emt 0:00:44]} 10. O-O {[%emt 0:01:01]} Ne4 {[%emt 0:01:53]} 11. Rd1 {[%emt 0:00:57]} a5 {[%emt 0:03:12]} 12. Bf4 {[%emt 0:03:53]} Nd6 {[%emt 0:07:21]} 13. cxd5 {[%emt 0:01:01]} cxd5 {[%emt 0:02:18]} 14. Rdc1 {[%emt 0:03:54]} Ba6 {[%emt 0:08:27]} 15. Qd1 {[%emt 0:02:06]} f6 {[%emt 0:03:08]} 16. Nd3 {[%emt 0:00:15]} Qd7 {[%emt 0:00:20]} 17. Bh3 {[%emt 0:03:22]} Bb7 {[%emt 0:10:36]} 18. Rc2 {[%emt 0:24:47]} Nc6 {[%emt 0:01:16]} 19. Rac1 {[%emt 0:00:06]} Rac8 {[%emt 0:00:13]} 20. b3 {[%emt 0:02:20]} Nf5 {[%emt 0:04:38]} 21. Bxf5 {[%emt 0:03:53]} exf5 {[%emt 0:00:03]} 22. h4 {[%emt 0:00:23]} Ba3 {[%emt 0:01:07]} 23. Rb1 {[%emt 0:00:08]} Ba6 {[%emt 0:02:34]} 24. Bd2 {[%emt 0:06:12]} Rfe8 {[%emt 0:00:53]} 25. Nf4 {[%emt 0:01:09]} Re4 {[%emt 0:00:50]} 26. e3 {[%emt 0:01:05]} Ree8 {[%emt 0:08:53]} 27. Ne1 {[%emt 0:04:09]} g5 {[%emt 0:05:14]} 28. hxg5 {[%emt 0:00:11]} fxg5 {[%emt 0:00:07]} 29. Nfd3 {[%emt 0:00:47]} Qe6 {[%emt 0:05:33]} 30. Bc1 {[%emt 0:03:16]} Bd6 {[%emt 0:00:45]} 31. Qh5 {[%emt 0:01:44]} Qg6 {[%emt 0:01:33]} 32. Qh1 {[%emt 0:01:21]} Qe6 {[%emt 0:01:35]} 33. Qh5 {[%emt 0:00:36]} Qg6 {[%emt 0:02:04]} 34. Qh1 {[%emt 0:00:04]} Qe6 {[%emt 0:02:06]} 35. Qh5 {[%emt 0:00:06]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.15"]
[White "Pavlidou, Ekaterini"]
[Black "Laverton, Christian"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2160"]
[BlackElo "2109"]
[Annotator "ChessBase"]
[PlyCount "60"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:01:39]} d5 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:59]} Nf6 {[%emt 0:00:43]} 3. Bg2 {[%emt 0:00:15]} Bf5 {[%emt 0:00:57]} 4. c4 {[%emt 0:00:29]} c6 {[%emt 0:00:37]} 5. b3 {[%emt 0:03:14]} e6 {[%emt 0:01:56]} 6. O-O {[%emt 0:00:40]} h6 {[%emt 0:02:17]} 7. Bb2 {[%emt 0:01:38]} Nbd7 {[%emt 0:01:15]} 8. d3 {[%emt 0:00:26]} Be7 {[%emt 0:01:31]} 9. Nbd2 {[%emt 0:01:04]} O-O {[%emt 0:01:01]} 10. Qc2 {[%emt 0:05:06]} Bh7 {[%emt 0:05:44]} 11. Rfe1 {[%emt 0:07:07]} a5 {[%emt 0:03:26]} 12. a3 {[%emt 0:01:17]} Nc5 {[%emt 0:03:53]} 13. Bd4 {[%emt 0:09:29]} Nfd7 {[%emt 0:04:32]} 14. Rab1 {[%emt 0:13:04]} b5 {[%emt 0:11:14]} 15. b4 {[%emt 0:06:55]} axb4 {[%emt 0:03:18]} 16. axb4 {[%emt 0:00:06]} Na6 {[%emt 0:02:14]} 17. c5 {[%emt 0:00:34]} Qc7 {[%emt 0:04:18]} 18. e4 {[%emt 0:05:09]} Bf6 {[%emt 0:05:03]} 19. e5 {[%emt 0:06:26]} Be7 {[%emt 0:01:23]} 20. Qc3 {[%emt 0:04:15]} Ra7 {[%emt 0:01:44]} 21. h4 {[%emt 0:05:03]} Rfa8 {[%emt 0:02:11]} 22. Bh3 {[%emt 0:05:11]} Nab8 {[%emt 0:04:36]} 23. Rb3 {[%emt 0:02:58]} Ra2 {[%emt 0:02:58]} 24. Nf1 {[%emt 0:01:26]} R8a4 {[%emt 0:01:50]} 25. Ne3 {[%emt 0:02:28]} Qa7 {[%emt 0:03:27]} 26. Nc2 {[%emt 0:00:17]} Nf8 {[%emt 0:03:02]} 27. Re3 {[%emt 0:02:41]} Na6 {[%emt 0:04:56]} 28. Nfe1 {[%emt 0:00:33]} Bd8 {[%emt 0:02:07]} 29. Rb1 {[%emt 0:04:07]} Ng6 {[%emt 0:02:12]} 30. h5 {[%emt 0:01:57]} Ne7 {[%emt 0:00:54]} 1/2-1/2

[Event "19th Prague Open-A 2020"]
[Site "Prague"]
[Date "2020.01.17"]
[Round "9.16"]
[White "Ochedzan, Tymon"]
[Black "Martynyuk, Elizaveta"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "2140"]
[BlackElo "2053"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2020.01.10"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,81,43,35,58,56,77,31,60,51,57,52,81,95,98,29,31,43,18,39,91,22,38,2,11,23,8,3,54,0,0,-29,-45,-46,-39,-29,21,-28,-28,-28,-29,-115,-102,-137,-152,-158,-152,-222,-227,-208,-184,-229,-233,-358,-395,-486,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 Nxd4 7. Qxd4 d6 8. Be2 Bg7 9. Bg5 O-O 10. O-O a5 {B36: Sicilian: Maroczy Bind: Gurgenidze System} (10... Be6 11. Qe3 Qa5 12. a3 Qb6 13. Qxb6 axb6 14. Rfd1 Rfc8 15. Nd5 Bxd5 16. exd5 Ne4 17. Bc1 f5 18. Rb1 Kf7 19. Bf1 h5 {½-½ (54) Belous,V (2556)-Gdanski,J (2488) Brownsville 2016}) 11. Qe3 a4 12. Rac1 (12. Rad1 $5 {[%cal Re4e5]} Ng4 13. Qg3 $16) 12... Be6 $146 {White is slightly better.} ({Predecessor:} 12... Re8 13. h3 Be6 14. f4 Qa5 15. Nb5 Bd7 16. Nc3 Be6 17. Nb5 Bd7 18. Nc3 Be6 19. Nb5 Bd7 20. Nc3 Be6 21. Nb5 Bd7 22. Nc3 Be6 23. Nb5 Bd7 24. Nc3 Be6 {½-½ (24) Ni,S (2325)-Gong,Q (2327) China 2014}) 13. f4 Qa5 14. f5 gxf5 15. exf5 Bxf5 16. Qxe7 (16. c5 $1 $16 e6 17. cxd6) 16... Qb6+ $11 17. Qe3 Qxe3+ 18. Bxe3 Bg4 ({Better is} 18... Ng4 $14 19. Bg5 (19. Rxf5 Nxe3 20. Rb5 Bd4 $11) 19... Be6) 19. Bd3 ({White should play} 19. Bd1 $16) 19... Nd7 $1 20. Bf4 Nc5 21. Bb1 Ra6 22. Rfe1 Rb6 (22... Ne6 $11 23. Bg3 Bh5) 23. Nb5 (23. Nd5 $1 $14 Ra6 24. h3) 23... Bxb2 24. Bxd6 (24. Rc2 $5 {[%cal Rc2b2]} Nd3 {[%mdl 64] Double Attack} 25. Rxb2 $1 {[%mdl 512]} Nxb2 26. Nxd6 $11) 24... Rc8 25. Rc2 $1 {[%cal Rc2b2]} Nd3 $36 {[%mdl 2048] Black is more active.} 26. Rf1 Bd7 27. Rf3 (27. Rd1 $5 {[%cal Rd1d3]} Bxb5 28. cxb5 Rxc2 29. Bxc2 Rxd6 30. Rxd3 Rxd3 31. Bxd3 $11) 27... Bxb5 28. Rxd3 Bxc4 {[#] ...Rcc6 is the strong threat.} 29. Be7 (29. Rxb2 $1 $11 {[%mdl 512]} Bxd3 (29... Rxb2 30. Rg3+) 30. Rxb6 Rc1+ {[%mdl 64] Double Attack} 31. Kf2 Rxb1 32. Rxb1 Bxb1 33. a3) 29... f6 30. Rd1 Kf7 31. Bd6 Rcc6 32. Bf4 {[#]} (32. Kf2 $17 {might work better.}) 32... Be6 $1 $19 {White must now prevent ...Bd4+!} 33. Be3 Rxc2 34. Bxc2 {[#]} Rb4 $1 35. Rd6 (35. Bb1 $142) 35... Bxa2 36. Bf5 Be5 $2 ({Black should try} 36... a3 $19 37. Rd7+ Ke8) 37. Rd7+ $11 {The position is equal.} Ke8 {aiming for ...Bb1.} 38. Bc5 Rb5 (38... Rc4 $5 39. Re7+ $8 Kd8 40. Rd7+ Ke8 41. Re7+ Kd8 42. Rd7+ Ke8 $11) 39. Re7+ Kd8 40. Rd7+ Ke8 $1 ({Stronger than} 40... Kc8 41. Rxh7+ Kd8 42. Rh8+ Bg8 43. Rxg8+ Kc7 44. Rc8#) 41. Re7+ {Accuracy: White = 43%, Black = 67%.} 1/2-1/2

