[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.1"]
[White "Haring, Filip"]
[Black "Pijpers, Arthur"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "2398"]
[BlackElo "2485"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,116,25,30,39,33,34,39,24,23,38,34,47,25,29,29,30,0,0,0,0,0,0,0,0,-31,0,-111,-109,-111,0,-56,-62,-63,-59,-59,-59,-59,-64,-64,-63,-60,-66,-63,-66,-79,-51,-168,-161,-186,-121,-129,-156,-143,-135,-284,-293,-270,-269,-269,-268,-319,-283,-352,-337,-552,-542,-530,-470,-430,-417,-420,-418,-407,-423,-419,-423,-423,-421,-400,-398,-553,-538,-758,-749,-714,-715,-29985,-29986,-29986,-29986,-29986,-29987]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. O-O-O d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Bd4 Bxd4 13. Qxd4 Qb6 14. Na4 Qc7 {B76: Sicilian Dragon: Yugoslav Attack, 9 g4 and 9 0-0-0.} 15. Bc4 Rd8 16. Nc5 (16. Bxd5 cxd5 17. Nc3 Bb7 $11) 16... Bf5 {White is slightly better.} 17. Bb3 $1 Nb6 18. Qe3 Rxd1+ 19. Rxd1 Qxh2 20. g4 Nd5 $1 {[#]} 21. Qe1 $146 ({Predecessor:} 21. Qd2 Qxd2+ 22. Kxd2 Bc8 23. Ba4 Rb8 24. Bxc6 Nb4 25. Ba4 Rb6 26. a3 Rd6+ 27. Ke1 Rxd1+ 28. Kxd1 {½-½ (33) Keuter,K (2421)-Peuraniemi,P (2452) GER email 2016}) 21... Qd6 $36 {[%mdl 2048] Black is pushing.} 22. Bxd5 cxd5 23. Qe3 Bc8 24. c4 e6 {[%cal Be7e6,Be6e5][%mdl 32]} 25. g5 {[%cal Oc5e4]} Qh2 26. f4 (26. Ne4 $11) 26... e5 $1 $17 {Strongly threatening ...Bf5.} (26... Rb8 27. Qe5 Rb4 28. b3 Qxa2 29. Qc7 Qa3+ 30. Kc2 $16) 27. Qd2 ({Don't go for} 27. Qxe5 $2 Bf5 28. Qc3 Qxf4+ 29. Rd2 Qf1+ 30. Rd1 Qf4+ 31. Rd2 dxc4 $19) 27... Qg3 (27... Qxd2+ $17 28. Rxd2 exf4 29. Rxd5 Bf5) 28. Ne4 Qxf4 $15 (28... dxe4 $2 {leads to mate.} 29. Qd8+ Kg7 30. Qf6+ Kg8 31. Rd8#) 29. Qxf4 exf4 30. cxd5 {[%mdl 4096] Endgame KRB-KRN} Bf5 31. Nf6+ Kg7 32. Rh1 $1 Rc8+ 33. Kd1 h5 {aiming for ...Rc2.} 34. Ke2 Kf8 $1 35. Kf3 Ke7 $1 36. Rh4 (36. b3 $15) 36... Rc1 $19 37. Kxf4 {[#]} Kd6 (37... Rc4+ $1 $19 38. Kg3 Rxh4 39. Kxh4 Kd6) 38. Rh2 Rf1+ 39. Kg3 Bb1 {...Rf5 is the strong threat.} 40. a3 {[#] This move loses the game for White.} (40. Rd2 $17) 40... Rf5 $1 41. Kh4 Rf3 42. Rh1 Bf5 43. Rh2 Rb3 44. a4 a5 45. Rh1 $2 (45. Ng8 {is a better defense.}) 45... Rxb2 46. Kg3 Rb4 47. Rc1 Rxa4 48. Rc6+ Ke5 49. d6 Ra3+ 50. Kf2 Rd3 51. Rc5+ Kxd6 52. Rxa5 h4 {[%cal Bh5h4,Bh4h3,Bh3h2][%mdl 32] Threatens to win with ...h3.} 53. Kg2 Ke6 54. Kf2 h3 55. Rb5 Rd2+ 56. Kg3 h2 {Black mates.} 57. Rb6+ Ke5 58. Rb5+ Kd6 {Weighted Error Value: White=0.44/Black=0.06 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.2"]
[White "Mirzoev, Azer"]
[Black "Carlsson, Ludvig"]
[Result "1-0"]
[ECO "D56"]
[WhiteElo "2420"]
[BlackElo "2355"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,135,24,19,15,8,11,23,31,20,37,20,44,47,28,36,79,55,76,13,52,60,79,62,65,62,74,61,48,46,51,48,71,77,66,68,132,120,152,148,157,113,172,176,180,180,172,172,170,170,177,177,177,176,186,198,199,167,169,168,154,148,181,183,183,187,372,154,164,146,183,178,187,183,184,170,205,204,201,197,215,208,267,217,267,256,391,388,377,375,432,436,522,437,604,586,609,662,638,634,819,836,869,833,1075,1041,904,915,1459,1473,5739,4220,29959,29961,29957,29956,29979,29980,29976,29973,29972,29973,29939,4076]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 Nbd7 8. Rc1 c5 {D63: Queen's Gambit Declined: Classical: 7 Rc1.} 9. dxc5 dxc4 10. c6 $1 {10.c6 is better than 10.Bxc4.} bxc6 {White has an edge.} 11. Bxc4 Rb8 12. Qe2 {[#]} Qa5 $146 ({Predecessor:} 12... Nd5 13. Bxe7 Qxe7 14. O-O N7b6 15. Bd3 e5 16. Nd2 Nxc3 17. Rxc3 Na4 18. Rb3 Be6 {½-½ (34) Lintchevski,D (2524)-Elistratov,S (2407) Moscow 2017}) 13. O-O Bb7 14. Rfd1 {[%cal Od1d7] Hoping for Rxd7!} Rfe8 (14... Rfd8 $14) 15. Nd4 {[%cal Bf3d4,Bd4b3,Bb3a5][%mdl 32]} Nb6 16. Bg3 (16. Nb3 $1 $16 {[%cal Rb3a5]} Qh5 17. Qxh5 Nxh5 18. Bxe7 Nxc4 19. Bd6) 16... Rbc8 17. Nb3 Qh5 18. Bd3 Qxe2 19. Bxe2 (19. Nxe2 Red8 $11) 19... Red8 20. Na5 Ba8 21. Ba6 Rxd1+ 22. Rxd1 Rd8 23. Rxd8+ Bxd8 24. Bb7 {White is more active.} Nc4 25. Bxa8 Bxa5 26. Na4 (26. Bxc6 $6 Nxb2 27. Nb5 a6 $14) 26... c5 {[#]} 27. Bf3 ({But not} 27. Nxc5 $6 Nxb2 28. Ne4 Nxe4 29. Bxe4 Na4 $14) (27. Bc6 $142 $1) 27... Bb4 (27... Nd7 $16 {keeps fighting.}) 28. a3 $18 Ba5 29. Be2 ({Much less strong is} 29. Nxc5 $6 Nxb2 30. Be2 Bb6 $14) 29... Nd2 30. Nxc5 Nfe4 {[#]} 31. Nxe4 Nxe4 {[%mdl 4096] Endgame KBB-KBN} 32. Bb8 Bb6 33. Kf1 f6 34. Bd3 Nc5 35. Bg6 Nd7 36. Bg3 Ne5 37. Bb1 Nc4 38. Ba2 Nxb2 39. Bxe6+ Kh7 $2 (39... Kh8 40. Ke2 Na4) 40. Bd6 (40. Bb3 $18) 40... Na4 $16 41. Ke2 Nc5 42. Bf5+ {This bishop pair is nice.} g6 43. Bc2 Kg7 44. g4 g5 45. a4 {[%cal Oa4a5] a5! is the strong threat.} Nd7 46. h3 Ne5 47. Bb3 Kg6 48. Bb4 a5 49. Ba3 h5 (49... Bc7 $142 50. Be6 Kg7) 50. Bc2+ $18 Kg7 51. gxh5 Kh6 52. Be7 {To avoid Bd8} Nd7 53. Bg6 {Threatens to win with Be8.} ({Weaker is} 53. Bf5 Bc5 $16) 53... Bc5 54. Bd8 Nb6 55. Be8 f5 56. Kd3 {To avoid Nc4} f4 57. exf4 gxf4 58. f3 Be3 59. h4 Kg7 60. Bc7 Kh7 61. Ke4 Nc4 62. Bxf4 {Threatening mate with Bg6+.} Bxf4 63. Kxf4 {KB-KN. White mates.} Kh6 64. Bb5 Nb6 65. Ke5 Kxh5 66. Kd6 Kxh4 67. Kc5 Nc8 68. Bd7 {Weighted Error Value: White=0.14 (very precise) /Black=0.28 (precise)} (68. Ba6 $142 Ne7 69. Kb6 Kg5 70. Kxa5 Kf6 71. Bb7 Nf5 72. Kb6 Ke7 73. a5) 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.3"]
[White "Vojta, Jakub"]
[Black "Jurcik, Marian"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "2289"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,106,6,8,17,0,20,0,0,0,0,0,12,0,8,13,8,10,16,6,15,-19,-12,-80,-77,-72,-81,-146,-134,-160,-132,-135,-114,-89,-88,-127,-21,-19,-23,-46,-37,-62,-60,-52,-1,-81,-34,-42,-8,-4,-6,-31,-38,-37,-24,-24,-6,-17,-27,-52,-60,-54,-66,-102,-105,-107,-87,-54,0,-81,-28,-28,-28,-75,-29,-250,-266,-266,-267,-267,-267,-243,-256,-254,-239,-275,-257,-455,-455,-444,-444,-318,-249,-547,-544,-462,-462,-882,-701]} 1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. e3 {[%cal Be2e3,Be3d4,Bd4d5][%mdl 32]} Nc6 {A22: English Opening: 1...e5 2 Nc3 Nf6.} 7. Nge2 $1 Bg4 {7...h5 is becoming the main line.} 8. d4 exd4 {The position is equal.} 9. exd4 {[#]} Bd6 $146 ({Predecessor:} 9... Bb4 10. O-O O-O 11. h3 Bh5 12. g4 Bg6 13. d5 Ne7 14. Qb3 Bd6 15. Rd1 Re8 {½-½ (34) Herrmann,M-Hawkins,J (1927) ICCF email 2018}) 10. h3 Bf5 11. O-O O-O 12. d5 Ne5 13. Nd4 Bd3 14. Re1 Bg6 $1 15. Bf1 Qf6 16. Ne4 {To avoid Bc5} (16. Bf4 $11 {keeps the balance.}) 16... Bxe4 $17 17. Rxe4 Nxd5 18. Nb5 {[#]} (18. Bf4 $142) 18... Bc5 $1 19. Bf4 (19. Qc2 Bb6) 19... Nxf4 {Black is more active.} 20. Rxf4 Qg6 {Threatens to win with ...Qxg3+.} 21. Qb3 Bb6 22. Nd4 Bxd4 (22... Rad8 $17 23. Nf5 Qe6) 23. Rxd4 $11 b6 24. Bg2 Rad8 25. Rad1 {[%cal Ba1d1,Bd1d4,Bd4f4][%mdl 32]} Rxd4 26. Rxd4 Qf6 (26... Qf5 $15) 27. Qd5 (27. Qc3 $1 $11) 27... c6 (27... c5 $17 28. Rd1 g5) 28. Qd6 $15 Nf3+ 29. Bxf3 Qxf3 $40 {[%mdl 4224] Endgame KQR-KQR. Black is up to no good.} 30. Rf4 (30. Qe7 {is more complex.} h5 31. b3 c5 32. Rd7 Qf5 33. Rxa7 Qxh3 34. Rd7) 30... Qd5 31. Qxd5 cxd5 $15 {KR-KR} 32. Ra4 Ra8 33. Kf1 Kf8 34. Ke2 Ke7 35. Kd3 Kd6 36. Rh4 h6 37. Rf4 Ke6 38. Ra4 Kd6 (38... a5 $15) 39. h4 (39. Rf4 $11) 39... g5 ({Black should play} 39... a5 $17) 40. hxg5 $11 hxg5 41. Ra6 Kc5 (41... g4 $17) 42. a4 $2 {This costs White the game.} (42. g4 $11) 42... Kc6 $19 {White must now prevent ...Kb7.} 43. b4 Kb7 $1 44. b5 {[#]} Rc8 $1 {...Rc4 is the strong threat.} 45. a5 {[#]} Rc5 $1 46. axb6 axb6 47. Ra1 Rxb5 {Strongly threatening ...Rb3+.} 48. Re1 $2 (48. Kd4) 48... Rb3+ 49. Kd4 Rf3 50. Re2 Rf5 51. g4 $2 (51. Rd2) 51... Rf4+ {Black is clearly winning.} 52. Kxd5 f6 53. Ke6 (53. Kd6 $142 Rxg4 54. Ra2) 53... b5 {Weighted Error Value: White=0.49/Black=0.14 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.4"]
[White "Ondrus, Martin"]
[Black "Mikes, Jan"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "2267"]
[BlackElo "2329"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,74,15,29,-8,13,21,26,0,22,-28,-11,-58,-52,-57,-61,-67,-72,-71,-59,-61,-64,-191,-33,-27,-38,-45,-30,-21,-12,-14,41,38,26,-20,-19,-180,-163,-171,-40,-46,-76,-23,0,0,5,-214,-158,-232,-185,-459,-454,-389,-347,-397,-411,-422,-339]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f3 e5 7. Nb3 Be7 8. Be3 O-O 9. Qd2 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 10. Bb5 Be6 11. Nd5 {Black must now prevent Bb6. Recently 11.0-0-0 got a lot of attention. B56: Classical Sicilian: Unusual Lines.} Bxd5 (11... a4 {keeps more tension.} 12. Bb6 Qb8 13. Bxc6 bxc6 14. Nxe7+ Kh8) 12. exd5 Na7 {[%cal Bc6a7,Ba7c8,Bc8b6][%mdl 32]} 13. Be2 {White has an edge.} a4 14. Nc1 ({White should try} 14. Na5 $1) 14... Nc8 15. c4 (15. O-O $11) 15... b5 $15 16. cxb5 Nb6 17. O-O Nfxd5 18. Bf2 Bg5 19. Qd3 Rc8 {[#] Hoping for ...Bxc1. Black is more active.} 20. a3 $146 (20. Kh1 $1 $15) ({Predecessor:} 20. Qa3 Nf4 21. Bd3 d5 22. Bc5 Re8 23. Bf5 Nc4 24. Qb4 Rxc5 25. Qxc5 Nd3 26. Qb6 Nb4 27. Qb7 Nd6 28. Qa7 Nxf5 29. Qxa4 Be3+ 30. Kh1 Ng3+ 31. hxg3 Qd6 {0-1 (31) Deseatnicov,I (2251)-Navrotescu,C (2443) Eforie Nord 1999}) 20... f5 $2 (20... Bxc1 $19 21. Raxc1 (21. Rfxc1 $2 Rxc1+ 22. Rxc1 Nf4 $19) 21... Rxc1 22. Rxc1 Nf4) 21. Na2 Nf4 $36 {[%mdl 2048] White is under pressure. Pair of Knights!} 22. Qd1 d5 $1 23. Nb4 d4 24. Re1 Kh8 (24... Nfd5 $11) 25. Bf1 $14 Qf6 26. g3 (26. Nc6 $142) 26... Ne6 $11 {[%cal Oe5e4,Bf4e6,Be6g5,Bg5e4][%mdl 32]} 27. Nd3 $2 (27. f4 $11 exf4 28. g4) 27... Nc4 $19 {aiming for ...Be3.} 28. f4 {[#]} e4 29. fxg5 (29. Rc1 e3) 29... Nxg5 30. Bg2 exd3 (30... e3 $5 {[%cal Re3f2]} 31. Re2 (31. Qxa4 exf2+ 32. Nxf2 f4 $17) 31... exf2+ 32. Rxf2 Qe7 $11) 31. Qxd3 Ne5 {[#]} 32. Qe2 (32. Rxe5 $1 $11 {and White stays safe.} Qxe5 33. Bxd4) 32... Rce8 {[%cal Bc8e8,Be8e7,Be7a7][%mdl 32]} 33. Kh1 {[#]} ({Don't go for} 33. Bxd4 $2 Nef3+ $1 {[%mdl 512]} 34. Kh1 Rxe2 $19) (33. Qd1 $17 d3 34. Rf1) 33... d3 $1 34. Qd1 (34. Qf1 {was worth a try.} Ne4 35. Bg1) 34... Ne4 35. Ba7 Re7 36. Rf1 {[#] Bxe4 is the strong threat.} Nxg3+ {[%mdl 512]} 37. hxg3 {Strongly threatening Bc5.} Rxa7 {Weighted Error Value: White=0.56/Black=0.29 (precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.5"]
[White "Hrbek, Stepan"]
[Black "Lim, Zhuo Ren"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2179"]
[BlackElo "2311"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,102,28,24,38,31,26,31,48,0,5,-35,0,0,0,0,0,0,0,0,0,0,0,0,0,-21,-20,-78,-83,-85,-50,-80,0,-80,-76,-117,-133,-156,-155,-138,-135,-158,-154,-214,-187,-187,-144,-135,-158,-150,-140,-152,-145,-232,-232,-212,-215,-263,-237,-228,-250,-242,-249,-240,-247,-241,-241,-267,-236,-233,-206,-250,-220,-217,0,-254,-252,-268,-268,-299,-354,-353,-322,-467,-491,-470,-483,-467,-448]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Re1 Nf6 6. c3 a6 7. Bf1 Bg4 8. d4 cxd4 9. cxd4 g6 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} 10. Nc3 Bg7 11. Be3 {[#]} Nd7 $146 {White is slightly better.} ({Predecessor:} 11... d5 12. e5 Ne4 13. Ne2 f6 14. h3 Bxf3 15. gxf3 Ng5 16. Bg2 e6 17. f4 Nf7 {1-0 (31) Delchev,A (2643)-Meins,G (2448) Bad Wiessee 2013}) 12. d5 (12. Rc1 $14) 12... Nce5 $11 {[%cal Bc6e5,Be5c4,Bc4b2][%mdl 32]} 13. h3 Bxf3 14. gxf3 Rc8 $1 15. f4 Nc4 16. Bd4 Nxb2 17. Qd2 Bxd4 18. Qxd4 O-O 19. Rab1 Qc7 20. Rec1 Nc4 21. a4 {[#]} (21. Nd1 $1 $11 b5 22. Bxc4 bxc4 23. Ne3 (23. Rb4 Qc5 $15)) 21... Na5 $1 $17 22. Ne2 Qb8 23. Nc3 Qc7 24. Ne2 $1 Qd8 25. Qb4 (25. Rc3 $142) 25... Rxc1 26. Rxc1 {[#]} Qb6 $1 $36 {[%mdl 2048] Black is on the roll.} 27. Qe1 Nb3 28. Rb1 Qa5 {Black is more active.} 29. Qd1 (29. Qxa5 $17 Nxa5 30. Nd4) 29... Nbc5 30. Qd4 Qxa4 (30... Nxa4 $19 31. Rxb7 Nac5) 31. Qxa4 Nxa4 32. Rxb7 Nac5 {[%csl LRb7,LRe4] Pair of Knights!} 33. Ra7 Rb8 34. Nd4 (34. Ng3 $17) 34... Rb4 $19 35. Nc6 Rxe4 36. Bxa6 Nf6 ({Avoid the trap} 36... Rxf4 $2 37. Nxe7+ Kg7 38. Bf1 $17) 37. Bf1 Nxd5 {White must now prevent ...Re1.} 38. Bg2 Re1+ ({And not} 38... Nxf4 39. Bxe4 Nxe4 40. Nxe7+ Kg7 41. h4 $11) 39. Kh2 Nxf4 {And now ...Kf8 would win.} 40. Nxe7+ Kf8 41. Nc8 Nxg2 42. Kxg2 {[%mdl 4096] Endgame KRN-KRN} Re6 43. f3 Ke8 44. Nb6 Kf8 45. Nc8 $1 h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 46. Kg3 Nb3 {To avoid Ra1} 47. Ra4 d5 48. Rb4 Nc1 {[%cal Od5d4]} 49. Rb1 (49. Rb5 {is a better defense.}) 49... Ne2+ {Black is clearly winning.} 50. Kf2 h4 51. Rb4 g5 {Weighted Error Value: White=0.18 (very precise) /Black=0.14 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.6"]
[White "Nielsen, Andre"]
[Black "Mannion, Stephen R"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2232"]
[BlackElo "2267"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,57,0,0,-12,0,0,0,0,0,0,2,0,0,-5,0,0,0,0,32,27,36,-22,41,43,34,29,25,14,0,0,31,12,93,74,104,102,106,98,103,75,82,0,93,0,76,0,70,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 {[%cal Bc2c3,Bc3d4,Bd4d5][%mdl 32]} Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Nxe4 8. d5 $1 {The main line 8.d5 scores better than 8.0-0.} Nxd2 9. Bxd2 {The position is equal.} Bxd2+ 10. Qxd2 ({Don't play} 10. Nxd2 Qe7+ 11. Qe2 Qxe2+ 12. Kxe2 Ne5 $15) (10. Kxd2 Ne7 $15) 10... Ne7 11. O-O-O d6 12. h4 $1 {[#]} O-O $146 ({Predecessor:} 12... Bg4 13. Qd4 Qd7 14. h5 h6 15. Rde1 Kf8 16. Nh4 Bxh5 17. g4 Qxg4 18. f4 Qd7 {0-1 (34) Mamedyarov,S (2767)-Karjakin,S (2743) Baku 2021}) 13. h5 h6 14. Rdg1 $1 c6 15. g4 $1 {g5 is the strong threat.} cxd5 16. Bb3 {[#]} (16. Bd3 $1 $14) 16... f6 (16... Bxg4 $1 $11 17. Nd4 Rc8+ 18. Bc2 Qd7) 17. Bc2 $14 ({Reject} 17. Bxd5+ Nxd5 18. Qxd5+ Rf7 $15) 17... Bd7 18. Qd3 {aiming for Qh7+.} Rc8 19. Kb1 {Hoping for Qh7+.} Rxc2 20. Qxc2 Qc8 21. Nd4 Bxg4 (21... Qc5 $11 22. Re1 Qxd4 23. Rxe7 Qxg4) 22. Qxc8 $16 Bxc8 {[#]} 23. Rc1 $1 {Prevents Nc6.} Nf5 {[#]} 24. Rxc8 $1 {[%mdl 512] White is more active.} Nxd4 25. Rc7 Rf7 26. Rc8+ {[%mdl 1024] White has strong compensation.} Rf8 27. Rc7 {Strongly threatening Rd1.} Rf7 28. Rc8+ Rf8 29. Rc7 {Weighted Error Value: White=0.13 (very precise) /Black=0.14 (very precise)} ({White should try} 29. Rxf8+ $14 Kxf8 30. Rd1) 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.7"]
[White "Neuman, Petr"]
[Black "Novotny, Michal"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2402"]
[BlackElo "2236"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,77,0,3,0,2,-20,-14,-26,-17,-13,-9,-12,0,0,0,0,29,12,52,45,43,39,54,-35,-34,-22,0,-30,-13,-39,-33,-39,-27,-46,0,1,1,8,2,0,7,8,3,7,163,162,628,592,606,602,564,565,740,664,29968,29969,29966,6179,29989,29990,29990,29991,29993,29994]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. Nbd2 O-O 7. e4 Nbc6 8. c3 a5 9. a4 {A07: Réti Opening: New York and Capablanca Systems.} d4 10. Nb3 b6 11. cxd4 {The position is equal.} exd4 12. Nbd2 Nb4 13. Nc4 {[#]} Be6 $146 ({Predecessor:} 13... Nec6 14. Bf4 Na6 15. e5 Be6 16. Ng5 Bd5 17. e6 Bxg2 18. exf7+ Rxf7 19. Kxg2 Qd5+ {½-½ (36) Batal,J (1960)-Pepermans,T (2000) FICGS email 2012}) 14. b3 $1 h6 15. Ne1 Qd7 16. Nc2 Rab8 17. Nxb4 axb4 18. Qc2 f5 19. f3 ({Better is} 19. exf5 $14 Bxf5 20. a5) 19... g5 20. Bd2 c5 (20... fxe4 {keeps more tension.} 21. fxe4 Rxf1+ 22. Rxf1 Nc6 23. e5 Nxe5 24. Bxb4 Ng4) 21. a5 (21. f4 {is interesting.} fxe4 22. Bxe4 Nd5 23. fxg5 hxg5 24. Bxg5 Nc3 25. Rxf8+ Rxf8 26. Re1) 21... bxa5 22. Rxa5 fxe4 23. fxe4 Rxf1+ 24. Bxf1 Rb5 (24... Qc7 $1 $15) 25. Ra8+ $1 $11 Kh7 26. Bg2 Ng6 27. Qd1 {[%cal Od2g5]} Rb7 28. e5 {[%cal Be4e5,Be5e6][%mdl 32]} Bd5 $1 29. Qe2 {[%cal Oh2h4]} Bxc4 $2 {[#] This costs Black the game.} (29... Bxg2 $11 {and Black stays safe.} 30. Qxg2 (30. e6 Qc6 $15) 30... Rc7) 30. dxc4 $18 Ra7 $2 (30... d3 31. Qf2 (31. Qe4 Ra7 $16) 31... Rc7) 31. e6 Qe7 32. Rxa7 Qxa7 33. Be4 {[%cal Oe6e7] [#] Strongly threatening e7!} Bf6 34. h4 {Intending hxg5 and mate.} Kg7 35. hxg5 hxg5 36. Qh5 $1 {[%csl LRg5,LRg6]} Qa1+ 37. Kg2 {White mates.} Ne5 38. Bxg5 Qb2+ 39. Kh3 {Weighted Error Value: White=0.08 (flawless) /Black=0.74} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.8"]
[White "Czerw, Dawid"]
[Black "Michalczak, Thomas"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2396"]
[BlackElo "2218"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,75,10,18,-13,-15,-23,37,11,19,20,10,10,10,23,15,6,31,0,22,-4,0,-15,-6,-12,-9,-18,-11,-43,-47,-53,-48,-47,-34,-46,-43,-34,0,-12,0,0,40,37,121,128,128,131,194,138,154,0,0,-58,-60,-47,-50,-62,-42,-43,-30,-53]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Be7 7. d4 d6 8. c3 O-O 9. O-O $1 {9.0-0 is better than 9.Nbd2.} Bg4 10. d5 {C86: Closed Ruy Lopez: Worrall Attack.} Na5 11. Bc2 h6 (11... c6 $11) 12. h3 {White is slightly better.} Bd7 13. Rd1 Qc8 14. Nbd2 c6 15. dxc6 Qxc6 16. Nf1 Rfe8 17. Ne3 Bf8 {[#]} 18. Nd5 $146 ({Predecessor:} 18. Qd3 Qc7 19. Nh2 Nc4 20. Nhg4 Nxg4 21. Nxg4 d5 22. Ne3 d4 23. Nd5 Qc6 24. cxd4 {½-½ (95) Polgar,J (2685)-Kovalev,V (2554) Dubai 2014}) 18... Nxd5 19. exd5 Qc4 20. Qxc4 Nxc4 21. a4 Rec8 22. Ne1 (22. a5 $5 {[%cal Rb2b3]}) 22... bxa4 23. Bxa4 Bxa4 24. Rxa4 Rab8 25. b4 $1 Nb6 26. Ra3 Rb7 27. Kf1 Ra8 28. Nc2 Nc4 29. Ra2 a5 (29... h5 $14) 30. Ne3 $16 Nxe3+ 31. Bxe3 Rb5 (31... a4 $16 {keeps fighting.}) 32. Ke2 ({White should play} 32. Rda1 $18) 32... Be7 33. Rb1 $2 {[#] White is more active.} (33. Rda1 $16) 33... Rab8 $11 34. Rab2 (34. Ra4 $11) 34... Bg5 $1 $15 (34... Rxd5 $2 35. c4 $18) 35. Bxg5 hxg5 36. c4 Rxb4 37. Rxb4 axb4 ({Resist} 37... Rxb4 38. Rxb4 axb4 39. Kd3 $14) 38. Kd3 {Weighted Error Value: White=0.18 (very precise) /Black=0.15 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.9"]
[White "Fus, Jakub"]
[Black "Jordanov, Mihail"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2384"]
[BlackElo "2193"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,90,0,-14,25,0,15,8,27,22,55,16,14,25,30,25,25,27,42,28,32,22,42,17,29,29,52,15,13,23,24,0,97,98,106,119,106,116,113,111,157,154,145,146,153,148,172,168,160,123,150,105,125,87,89,97,96,116,85,109,97,24,29,0,10,11,8,0,0,-21,-22,-29,-30,-35,-30,-28,-27,-38,-24,-23,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bf4 Bb4+ 5. Nbd2 Bb7 6. e3 O-O 7. Bd3 d5 {E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7 .} 8. O-O Bd6 9. Bg5 Be7 {The position is equal.} 10. Rc1 h6 11. Bh4 Nbd7 12. cxd5 Nxd5 13. Bxe7 Nxe7 {[#]} 14. Ne4 $146 ({Predecessor:} 14. Bb5 c6 15. Ba4 Rc8 16. b4 a5 17. Ne4 Ba6 18. Re1 axb4 19. Qd2 c5 20. Red1 {1-0 (42) Lytchak,A (2375)-Auer,M (2330) Germany 1999}) 14... Nd5 15. Qa4 Qe7 16. Bb5 Nb8 {[%cal Od5e3]} 17. Nc3 Rc8 18. Nxd5 Bxd5 19. Bd3 c5 20. dxc5 bxc5 21. Be4 Qb7 {[#]} (21... Nd7 $11 {remains equal.}) 22. Rxc5 $1 $16 {Strongly threatening Bxd5.} Bxe4 (22... Nd7 23. Rxc8+) 23. Rxc8+ {[%mdl 64] Overworked Piece} Qxc8 24. Qxe4 Nd7 25. Nd4 Rb8 ({Better is} 25... Nb6) 26. Nc6 {Ne7+ is the strong threat.} Nf6 27. Qc2 {aiming for Ne7+. White is much more active.} Qc7 {Inhibits Ne7+.} 28. Rc1 Rb7 29. b4 Qb6 30. Qc5 Qa6 31. Qc4 (31. Ne5 $142) 31... Qa3 32. Rb1 Nd5 33. Qb3 Qxb3 34. Rxb3 {[%mdl 4096] Endgame KRN-KRN} Rb6 35. b5 ({Of course not} 35. Nxa7 Ra6 36. Nb5 Rxa2 $11) 35... a6 {[#]} 36. Nd4 (36. a4 $1 $16) 36... e5 $11 37. e4 Nc7 38. Nf3 Rxb5 39. Kf1 f6 40. Ke2 Ra5 41. Rb8+ Kh7 42. Rb2 Nb5 43. Kd3 Ra3+ 44. Kc4 Ra4+ 45. Kd3 Ra3+ {White really could win this.  Weighted Error Value: White=0.14 (very precise) /Black=0.11 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.10"]
[White "Bochnicka, Vladimir"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "2222"]
[BlackElo "2356"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,72,-10,-15,-22,-20,0,-19,4,0,25,0,23,26,26,20,130,0,20,16,11,12,16,8,61,56,56,53,55,63,360,-99,-94,-118,-127,-101,-122,-117,-105,-146,-102,-194,-192,-212,-223,-239,-177,-229,-151,-314,-287,-29976,-29976,-29993,-29994,-29995,-70]} 1. c4 d6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. d3 f5 6. e4 Nc6 7. Nge2 Nf6 8. O-O O-O 9. exf5 Bxf5 10. h3 Qd7 {A26: English Opening vs King's Indian with ...Nc6 and d3.} 11. Kh2 {[#]} Rad8 $146 ({Predecessor:} 11... Be6 12. Nd5 Nh5 13. Qa4 Rf7 14. Be3 a6 15. Rac1 Kh8 16. b4 Raf8 17. Rce1 h6 18. Ng1 {1-0 (52) Kokarev,D (2609)-Setyaki,A (2421) Yogyakarta 2019}) 12. Be3 Be6 {The position is equal.} 13. f4 h6 14. b3 Kh7 15. Qd2 Ne7 16. Rae1 Bf7 (16... b6 $11 {keeps the balance.}) 17. Bg1 (17. Bxa7 $6 b6 $11) (17. Bxb7 $6 c6 18. Ba6 (18. fxe5 dxe5 19. Ba6 Be6 $11) 18... Be6 $11) (17. fxe5 $1 $16 dxe5 18. Rxf6 $1 (18. Bxb7 c6 $11) (18. Bxa7 b6 $11) 18... Bxf6 19. Bxh6) 17... exf4 18. Nxf4 g5 19. Nfe2 {[%cal Bf4e2,Be2d4,Bd4f5][%mdl 32]} d5 20. Bc5 b6 (20... dxc4 $11 21. Bxb7 (21. Nd4 Nfg8 $11) 21... c6) 21. Bxe7 $14 Qxe7 22. Nd4 Qd7 23. Nf5 {Threatens to win with Re7.} dxc4 $2 {[%mdl 8192]} (23... Be6 $14 24. Nxg7 Kxg7) 24. Ne4 $2 {Pair of Knights!} (24. Nxg7 $18 Kxg7 25. Rxf6 Kxf6 26. Qb2) 24... Bg6 {[%cal Bf7g6,Bg6f5,Bf5d7][%mdl 32]} (24... Qxd3 25. Nxg5+ hxg5 26. Qxg5 $16) (24... Nxe4 {feels hotter.} 25. Bxe4 Bg6 26. Nxg7 Rxf1 27. Bxg6+ Kxg7 28. Rxf1 Kxg6 29. Qf2 cxd3 30. Qf6+ Kh7) 25. Nxg5+ hxg5 26. Re7 {[#]} Bxf5 $1 27. Rxd7 Bxd7 {The board is on fire.} (27... Nxd7 $2 28. Rxf5 $1 Rxf5 29. Be4 $18) 28. dxc4 (28. Qxg5 $142 cxd3 29. Qh4+ Kg8 30. Qc4+ Rf7 31. Be4) 28... g4 (28... Kh6 $142 {[%cal Od7h3] aiming for ...Bxh3!} 29. Qc1 c5) 29. h4 {[#]} (29. Qc2+ $17 Kh8 30. h4) 29... Bf5 $1 $19 {[%mdl 512]} 30. Qg5 (30. Qf4 Bg6) 30... Bg6 31. c5 bxc5 32. Qxc5 (32. Rf2 $142) 32... Rd2 33. Qxa7 $2 (33. h5 $17 Bxh5 34. Qxa7) 33... Re8 {( -> ...Ree2)} 34. Kh1 $2 (34. Rf2 $19 Rd3 35. Rf4) 34... Ree2 {[%csl LRa2,LRg2] Black mates.} 35. Qxc7 Rxg2 36. Rxf6 Rh2+ {Quite a comeback for Black.  Weighted Error Value: White=0.74/Black=0.42} ({Not} 36... Be4 37. Rh6+ Kxh6 38. Qf4+ Kg6 39. Qxe4+ Kh6 40. Qf4+ Kh7 41. Qe4+ Kh6 42. Qf4+ Kh7 43. Qe4+ Kh6 $11) 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.11"]
[White "Plischki, Sebastian"]
[Black "Grutter, Tim"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2375"]
[BlackElo "2194"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,93,-6,22,0,21,16,17,15,22,20,39,37,43,25,44,40,56,27,28,30,35,25,33,26,35,31,24,21,31,13,94,35,40,40,40,31,29,21,22,22,13,18,18,25,26,0,26,26,26,26,26,26,26,26,26,26,27,27,44,0,56,41,41,41,41,-67,-67,-77,-77,-77,-67,-77,-67,-67,-44,-66,-66,-66,-23,-23,0,0,0,-7,-2,0]} 1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 f5 5. g3 d6 6. Bg2 {A45: Trompowsky Attack.} Nd7 7. c4 c6 8. Nc3 Nf6 9. Nge2 {[#]} Be7 $146 ({Predecessor:} 9... Be6 10. Qd3 d5 11. cxd5 cxd5 12. Nf4 a6 13. O-O Rc8 14. Rac1 Rc6 15. Rc2 g5 16. Nxe6 fxe6 {0-1 (39) Olund,J (2350)-Savchenko,B (2564) Chess.com INT 2020}) 10. O-O O-O 11. b4 Re8 12. b5 Qc7 13. bxc6 bxc6 14. Rb1 Bd7 15. Qa4 Rab8 16. Rb3 Rb6 17. Rfb1 Reb8 18. Qa3 Bc8 {[%cal Od6d5]} 19. Nf4 Ne4 (19... d5 $11 20. c5 Rxb3 21. Rxb3 Ne4) 20. Qc1 (20. Rxb6 $16 Rxb6 21. Rxb6 (21. Bxe4 fxe4 22. Rxb6 Qxb6 $11) 21... Qxb6 22. Nxe4 (22. Bxe4 fxe4 23. Kg2 g5 $11) 22... Qb1+ 23. Bf1 fxe4 24. Qxa7) 20... Nxc3 21. Qxc3 Rxb3 22. axb3 a5 23. Nd3 Bf6 24. c5 {aiming for cxd6.} d5 25. Ra1 Ba6 26. Bf1 {[%cal Bg2f1,Bf1e2,Be2d1,Bd1c2][%mdl 32]} Bxd3 27. Qxd3 Bd8 28. Be2 Rb4 29. Ra4 Rb8 30. Bd1 Qb7 31. Bc2 Bc7 32. Kf1 h5 33. Ke2 Kf8 {[%cal Bg8f8,Bf8e7,Be7d6][%mdl 32]} 34. Kd2 (34. h4 $14 {was preferrable.}) 34... Qb5 (34... h4 $11) 35. Qxb5 (35. b4 {feels hotter.} h4 36. gxh4 axb4 37. Bb3 Ke7 38. Qxb5 Rxb5 39. h5) 35... Rxb5 $14 {[%mdl 4096] Endgame KRB-KRB} 36. Kc3 Ke7 37. Ra1 {[#]} (37. h4 $14) 37... Rxc5+ $1 $15 38. Kd2 (38. Kb2 Rb5) 38... Rb5 39. Bd1 Kd6 40. Rc1 Rb8 41. Ra1 h4 42. Ke2 Rh8 43. Rc1 {[%cal Ob3b4]} Rg8 (43... hxg3 $15 44. hxg3 Rh1) 44. b4 $11 Ra8 45. Ba4 {The position is equal.} Ra6 (45... axb4 $2 46. Rxc6+ Ke7 47. Rxc7+ $18) 46. b5 cxb5 47. Bxb5 {Weighted Error Value: White=0.11 (very precise) /Black=0.13 (very precise)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.12"]
[White "Melaa, Sondre"]
[Black "Van Osch, Mees"]
[Result "0-1"]
[ECO "E91"]
[WhiteElo "2169"]
[BlackElo "2364"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,64,17,0,20,-13,-16,-19,-9,-20,-32,-7,-15,-16,-19,-59,-37,-48,-32,-145,-134,-195,-187,-244,-244,-191,-82,-72,-85,-85,-70,-182,-171,-159,-170,-1027,-1017,-887,-1032,-953,-924,-1221,-844,-1161,-1160,-968,-1204,-1008,-1016]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Na6 7. O-O e5 8. d5 Nc5 9. Qc2 a5 10. b3 Ng4 {[#] E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves.} 11. Bg5 $146 ({Predecessor:} 11. h3 Nf6 12. a3 Nh5 13. Be3 f5 14. Nd2 f4 15. Bxc5 dxc5 16. Qd1 Nf6 17. Nf3 Ne8 18. Nh2 {1-0 (79) Sloniewska,A (1540)-Borys,M (1366) Warsaw 2019}) 11... f6 12. Bh4 g5 {The position is equal.} 13. Bg3 f5 14. exf5 Bxf5 15. Qd2 h6 {[%cal Bh7h6,Bh6h5,Bh5h4][%mdl 32]} 16. Rac1 Nf6 17. Qe3 Qe8 18. Ne1 {[#]} (18. h3 $15) 18... Qg6 $1 $17 19. Rd1 {[#]} (19. Nf3 $17) 19... h5 $1 $19 20. f3 (20. Bxe5 $2 Rae8 21. Nd3 (21. Nf3 $2 Ng4 $19) 21... Nxd3 22. Bxd3 Ng4 23. Bxf5 Rxf5 $19) (20. Nf3 $142 h4 21. Bxh4 (21. Bxe5 $2 Ng4 $19) 21... gxh4 22. Nxh4) 20... h4 21. Bf2 ({Of course not} 21. Bxe5 Rae8 22. Nd3 (22. f4 $2 gxf4 23. Qxf4 Rxe5 $19) 22... Nfd7 $19) 21... Bh6 (21... g4 $19 {and Black stays clearly on top.} 22. Qd2 (22. Bxh4 $2 Bh6 $19) 22... g3 23. Bxc5 gxh2+ 24. Kh1 dxc5) 22. Qd2 $17 e4 {Black is more active.} 23. Bxc5 dxc5 24. fxe4 (24. d6 $15 g4 25. f4) 24... Nxe4 $19 25. Nxe4 {[%cal Of1f5] aiming for Rxf5!} g4 26. Rxf5 $2 (26. Rf4 Bxe4 27. Rxg4 Bxd2 28. Rxg6+ Bxg6 29. Rxd2) 26... Bxd2 {Black is clearly winning.} 27. Rxf8+ Rxf8 28. Nxd2 Qe8 29. Bd3 Qe3+ 30. Kh1 h3 31. Nf1 Qf2 {[%cal Of2f1] ( -> ...Qxf1+!)} 32. Ng3 Re8 {Weighted Error Value: White=0.55/Black=0.06 (flawless)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.13"]
[White "Hrabusa, Matej"]
[Black "Stanojevic, Ilija"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2369"]
[BlackElo "2190"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,97,50,36,65,34,52,52,56,45,51,55,54,58,46,25,62,67,76,73,126,73,72,69,211,152,177,52,36,37,139,141,178,147,145,140,127,18,28,0,0,0,0,0,244,104,110,109,106,106,98,111,104,100,287,226,210,219,218,214,205,218,220,202,288,264,367,363,456,417,1154,1116,2878,1839,29977,29978,6203,6187,29983,29982,29981,29982,29982,29983,29983,29984,29984,29984,29983,29983]} 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. c4 d6 6. O-O Nbd7 {6...Nbd7 is better than 6...Be7. E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+.} 7. Re1 g6 8. Nc3 Bg7 {White is slightly better.} 9. e4 e5 10. b3 O-O 11. Bb2 Re8 12. Qc2 {[#]} a5 $146 ({Predecessor:} 12... c6 13. Rad1 Qc7 14. d5 cxd5 15. Nb5 Qb8 16. cxd5 Rc8 17. Qd2 a6 18. Na3 b5 {1-0 (43) Tica,S (2295)-Glavan,M (2006) Sv Filip i Jakov 2015}) 13. Rad1 exd4 14. Nxd4 Nc5 (14... c6 $142) 15. e5 (15. f4 $142) 15... Bxg2 $16 (15... Rxe5 16. Bxb7 Rxe1+ 17. Rxe1 $16) 16. Kxg2 Nh5 (16... Rxe5 $14 17. Nc6 Rxe1 18. Nxd8 Rxd1) 17. Nf3 Qc8 {[%cal Rd6e5]} 18. exd6 (18. Nd5 $18) 18... Nf4+ $1 $14 19. Kh1 {Active counter play!} Qh3 ({Black should try} 19... Qb7 $1 $14 20. Rxe8+ Rxe8) 20. Rg1 $1 $16 Qg4 {Prevents Ng5.} 21. Nh4 c6 {[%cal Oa8d8]} 22. f3 $1 (22. gxf4 $6 Qxh4 23. d7 Red8 $11) (22. d7 Red8 $16) 22... Qh5 {[%cal Oa8d8]} 23. d7 (23. gxf4 Qxh4 24. Rg4 (24. d7 Red8 $11) 24... Qh3 $14) (23. Ne4 $1 $16 Bxb2 24. Qxb2 Nxe4 25. fxe4 (25. gxf4 Qxh4 26. fxe4 Qxf4 $15)) 23... Red8 $11 {[%cal Oa8a7]} 24. Ne4 {Strongly threatening Bxg7.} Bxb2 25. Nxc5 ({Much weaker is} 25. gxf4 Nxe4 26. fxe4 (26. Qxb2 Qxh4 27. fxe4 Qxf4 $17) 26... Qxh4 $17) 25... Qxc5 26. Qxb2 Nh3 (26... Ne6 $11 {and Black stays safe.}) 27. Rg2 (27. Rgf1 $18) 27... Ra7 $16 28. Re2 {White wants to mate with Re8+.} ({Don't play} 28. Rgd2 $6 Raxd7 $1 29. Kg2 (29. Nxg6 $2 hxg6 30. Kg2 Rxd2+ 31. Rxd2 Rxd2+ 32. Qxd2 Ng5 $19) 29... Rxd2+ 30. Rxd2 Rxd2+ 31. Qxd2 Ng5 $11) 28... Raxd7 29. Rde1 {aiming for Re8+.} Qd4 {[#]} 30. Qxd4 $1 $40 {[%mdl 128] White is out for blood.} Rxd4 31. f4 {Inhibits Ng5.} h6 $2 (31... Nxf4 $16 32. gxf4 Rxf4) 32. Kg2 Nxf4+ 33. gxf4 Rxf4 34. Re8+ Rxe8 35. Rxe8+ $18 {[%mdl 4096] Endgame KRN-KR} Kg7 36. Nf3 b5 (36... c5 $142 37. Re7 g5) 37. c5 a4 38. Rd8 axb3 39. axb3 Rb4 (39... Re4 $142 40. Kf2 h5) 40. Nd4 Kf6 41. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} g5 42. Rd6+ Kg7 43. h5 {Kf3 would kill now.} Kh7 44. Kf3 {White mates.} f5 45. Ke3 f4+ 46. Kd3 f3 47. Rf6 g4 48. Rf7+ Kg8 49. Rf4 {Weighted Error Value: White=0.19 (very precise) /Black=0.65} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.14"]
[White "Kulhanek, Tomas"]
[Black "Bodicky, Michal"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2323"]
[BlackElo "2137"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,57,10,13,16,16,8,35,37,33,29,29,27,38,24,57,46,54,51,45,22,128,131,127,125,125,83,258,247,584,514,647,626,768,754,912,933,1802,593,552,0,1827,1794,1725,1716,29993,29994,29994,29995]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Bg4 6. Qb3 Qc7 7. Ne2 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} Bxe2 8. Bxe2 {[%cal Oc1f4]} Nbd7 9. O-O {White is slightly better.} e6 10. Nd2 Bd6 11. Nf3 {[#]} h6 $146 ({Predecessor:} 11... O-O 12. Bd3 h6 13. Re1 Rfe8 14. g3 a6 15. a4 Rab8 16. a5 Rbd8 17. Bd2 Nb8 {0-1 (42) Kamsky,G (2665)-Sadhwani,R (2545) Chess.com INT 2021}) 12. Bd3 g5 13. g3 O-O-O 14. Re1 Kb8 15. a4 {[%cal Ba2a4,Ba4a5,Ba5a6][%mdl 32]} Ng4 (15... g4 $11 {keeps the balance.} 16. Nh4 Ka8) 16. a5 $16 Rde8 17. a6 b6 18. Bd2 (18. Qb5 $142) 18... f5 $2 (18... h5 $16 {might work better.}) 19. c4 $18 e5 $2 (19... f4 {is more resistant.}) 20. Bxf5 dxc4 21. Qb5 Ndf6 22. Rac1 e4 {[#]} 23. Rxc4 $1 Qf7 {[#]} (23... Qe7 24. h3) 24. Qc6 $1 Qc7 {[#]} (24... Qd5 25. h3) 25. Qb5 Qf7 {[#]} 26. Rec1 $1 {[%cal Od2b4] White threatens Bb4! and mate.} exf3 (26... e3 27. fxe3) 27. Qc6 {[%csl LRd6,LRf3][%cal Oc6c8] Qc8+! would kill now.} Bc5 28. Rxc5 bxc5 29. Rxc5 {Weighted Error Value: White=0.49/Black=0.78} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.15"]
[White "Acor, Corey"]
[Black "Lacrosse, Marc"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2303"]
[BlackElo "2035"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,76,0,0,0,0,0,0,0,0,0,0,0,0,0,13,0,3,0,0,0,0,0,8,16,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,527,192,5222,5519,5393,5277,5308,5357,3241,2672,6172,5875,2546,2430,6427,12457,2558]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Nxe4 8. Bxb4 Nxb4 9. Bxf7+ Kxf7 {[%cal Be8f7,Bf7f8,Bf8e7][%mdl 32]} 10. Qb3+ {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Kf8 {now scores much better than the old 10...d5.} 11. Qxb4+ Qe7 $1 12. Qxe7+ {The position is equal.} Kxe7 13. O-O Kd8 14. Re1 Nf6 15. Nc3 Rf8 16. Rac1 d6 17. h3 Bd7 18. d5 {[#]} h6 $146 ({Predecessor:} 18... a5 19. Nd4 Ra6 20. g4 Rb6 21. b3 Re8 22. Rxe8+ Nxe8 23. Re1 c5 24. dxc6 bxc6 {0-1 (35) Markun,B (2251)-Gregoric,A (2029) Ljubljana 2021}) 19. Nd4 Re8 20. Rxe8+ Nxe8 21. Re1 Nf6 22. Re3 a6 23. f4 {[%cal Bf2f4,Bf4f5,Bf5e6][%mdl 32]} c5 24. Ne6+ Bxe6 25. Rxe6 $11 {[%mdl 4096] Endgame KRN-KRN} Kd7 26. g4 Rb8 {[%cal Of6d5]} (26... Nxd5 $2 {[#]} 27. Nxd5 $1 Kxe6 28. Nc7+ Kd7 29. Nxa8 $18) 27. f5 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 28. Kf2 b4 29. Ne4 Nxe4+ 30. Rxe4 {KR-KR} Re8 $2 {[%mdl 8192]} (30... b3 $11 31. a4 Re8) 31. Re6 $2 (31. Rxe8 {aiming for Rg8.} Kxe8 32. h4) 31... Rxe6 $2 (31... Rc8 32. Rg6 Ke7 33. Rxg7+ Kf6 34. Rg6+ Ke5 35. Rxh6 Kxd5) 32. fxe6+ $18 {KP-KP. White is clearly winning.} Ke7 33. h4 Kf6 34. Ke3 Ke7 35. Kd3 {[#] Strongly threatening Kc4.} Kf6 36. Kc4 Ke7 37. Kb3 Kd8 38. Ka4 {White threatens Ka5 and mate.} Ke7 {Weighted Error Value: White=0.18 (very precise) /Black=0.44} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.16"]
[White "Soucek, Petr"]
[Black "Dev, Shah"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2117"]
[BlackElo "2243"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,57,4,3,0,0,11,19,7,12,10,10,30,10,11,19,27,24,35,12,12,0,106,103,97,120,166,158,158,162,171,165,180,14,14,19,110,113,104,85,179,187,176,94,81,21]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 O-O {C47: Scotch Four Knights and Four Knights with 4 g3.} 9. O-O Bg4 10. Ne2 cxd5 {The position is equal.} 11. h3 Bh5 12. c4 Re8 13. Qc2 Bxe2 14. Bxe2 d4 {[%cal Oe8e2]} 15. a3 Bf8 {[#]} 16. Bf3 $146 ({Predecessor:} 16. Rd1 Qd7 17. Be3 c5 18. Bf3 Rab8 19. Bg5 Qe6 20. Bxf6 Qxf6 21. Re1 Bd6 22. Qa4 {0-1 (41) Thomas,T (1958)-Kusa,J (2280) Prague 2021}) 16... Rb8 17. Bf4 {[%cal Bc1f4,Bf4c7,Bc7b6,Bb6e3][%mdl 32]} a5 (17... d3 $11 18. Qc3 Bd6 19. Bxd6 Qxd6) 18. Rad1 $1 $16 {White is more active.} Bc5 19. Qf5 Bf8 (19... Qe7 $16 {might work better.}) 20. Qxa5 $18 Rxb2 21. Bxc7 Qd7 22. Bb6 $1 {This bishop pair is nice.} d3 23. c5 $2 ({White should play} 23. Be3 $18) 23... Qd4 $1 $11 24. Rb1 Rc2 (24... Rxb1 $1 $11 {remains equal.} 25. Rxb1 Nd5) 25. c6 $1 $16 Qc4 26. Rfd1 {To avoid d2. Strongly threatening Qb5.} Bd6 (26... Ne4 $16 {was called for.}) 27. Be3 $1 $18 Ne4 {[%cal Oe4f2] [#]} 28. Bxe4 ({White should try} 28. Qf5 $1 $18 {Hoping for Bxe4.} g6 29. Qd7 Qxc6 30. Qxc6 Rxc6 31. Rxd3) 28... Qxe4 $16 {[#]} 29. Qb5 {Weighted Error Value: White=0.17 (very precise) /Black=0.23 (precise)} (29. Rb3 $1 $16) 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.17"]
[White "Torngren, Gustav"]
[Black "Lorans, Sylvain"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "2228"]
[BlackElo "2110"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,5,22,17,53,50,45,46,56,39,50,43,112,113,126,119,172,160,160,166,167,157,158,154,232,217,232,213,233,206,231,219,322,306,360,112,114,0,363,354,345,368,335,330,625,628,850,815,727,394,907,906,2779,2667,1900,1746]} 1. c4 e5 2. Nc3 Nf6 3. e3 Bb4 4. Qb3 Bxc3 5. Qxc3 Nc6 6. b4 {[%cal Bb2b4,Bb4b5][%mdl 32] [#] A22: English Opening: 1...e5 2 Nc3 Nf6.} d5 $146 ({Predecessor:} 6... d6 7. Bb2 O-O 8. Nf3 Bg4 9. b5 Ne7 10. d4 e4 11. Nd2 Ng6 12. h3 Bd7 {1-0 (55) Korobov,A (2695)-Tari,A (2597) Dubai 2017}) 7. b5 $1 d4 8. Qa3 {White is slightly better.} Ne7 9. Nf3 dxe3 10. dxe3 Bg4 {[#]} (10... e4 $1 $14) 11. Bb2 $1 $16 Bxf3 12. gxf3 Ng6 (12... Qd6 $16) 13. Rd1 $18 Qe7 14. Qxe7+ Kxe7 15. Ba3+ Ke8 16. Bh3 Rd8 (16... h5 $16 17. Bb4 h4) 17. Ke2 Nf8 18. Rxd8+ Kxd8 19. Rg1 Ke8 20. Bb2 ({Don't do} 20. Rxg7 $6 Ng6) 20... Ng6 (20... Ke7 {might work better.} 21. Bxe5 (21. Rxg7 Ng6 $16) 21... Ne6) 21. Rd1 b6 22. Bf5 $2 (22. Rd3 $18 {has better winning chances.}) 22... Ne7 $16 23. Bh3 {White is much more active. Black has bad knights. A strong pair of Bishops.} (23. Bc2 $16 Nd7 24. Rg1) 23... Ng6 $18 24. Rd3 Ke7 25. Ba3+ Ke8 26. Bb4 {[#] Threatens to win with Ra3.} e4 $2 (26... Nf8 27. Ra3 Ne6 28. Rxa7 Kd7) 27. fxe4 Ne5 28. Ra3 c5 29. Rxa7 Rf8 $2 (29... cxb4 30. Ra8+ Ke7 31. Rxh8 Nxe4 32. Rxh7 g6) 30. Bc3 {White is clearly winning.} Neg4 31. Bxg4 Nxg4 32. Bxg7 {Weighted Error Value: White=0.32/Black=0.46} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.18"]
[White "Sorm, Daniel"]
[Black "Mizicka, Matus"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2348"]
[BlackElo "1818"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,117,52,27,35,17,18,14,29,8,33,-12,-3,-7,-6,-26,31,8,48,31,10,0,0,0,0,17,15,13,19,14,13,11,24,7,23,0,38,21,37,35,23,-25,-10,-24,10,-22,-16,-12,-7,-87,-19,-20,0,-77,-34,-41,0,0,100,91,110,57,65,55,95,109,82,62,98,49,53,50,242,175,307,292,654,379,372,143,108,98,342,372,439,373,925,929,885,913,912,857,1482,1047,29970,29970,4770,1832,1814,1722,1577,1590,29973,29974,29973,29972,12832,11272,29987,29988]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 Nbd7 6. Bg5 c6 {E71: King's Indian: 4 e4 d6 5 h3.} 7. Qd2 O-O 8. Bd3 e5 {The position is equal.} 9. d5 Qc7 {[#]} 10. g4 $146 (10. Nge2 $14 {is superior.}) ({Predecessor:} 10. Nge2 a6 11. a4 Nc5 12. Bc2 a5 13. g4 Ne8 14. Ng3 Na6 15. Rd1 Nb4 16. Bb1 {1-0 (30) Lehmann,H (2175)-Mecklenburg,R Germany 1997}) 10... Nc5 11. Bc2 cxd5 12. cxd5 a6 (12... a5 $1 $11) 13. Nge2 $14 b5 14. a3 Rb8 15. b4 Ncd7 16. f3 Nb6 17. Bd3 Bd7 18. Kf2 Nc4 19. Bxc4 bxc4 20. Rab1 Rb7 21. Rb2 Rfb8 22. Rhb1 Be8 23. Be3 Nd7 24. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} Bf6 25. g5 (25. Kg2 $142) 25... Bd8 $11 26. Kg2 Nb6 (26... f5 {is interesting.} 27. f4 exf4 28. Nxf4 Ne5 29. Ne6 Qd7) 27. a5 Na4 28. Nxa4 Bxa4 29. Rc1 (29. f4 $11) 29... Bb5 {This bishop pair is nice.} (29... Qc8 $17 {Strongly threatening ...Bd7.} 30. Rcb1 Bd7) 30. h4 Qc8 31. Qe1 (31. Rbc2 $11) 31... Ba4 ({Black should play} 31... Be8 $17) 32. Bd2 $15 Bb5 (32... f6 $15 {was preferrable.}) 33. Qg3 Be7 {[#]} (33... f5 $11 {keeps the balance.}) 34. Bc3 $1 $16 Bf8 35. h5 {White is more active.} (35. f4 $16) 35... Bg7 $14 36. Rh1 Re7 37. Qh4 {And now hxg6 would win.} Bh8 38. Rbb1 Qd7 39. Rh3 (39. Bd2 $16) 39... Qa7 40. f4 exf4 $2 ({Black should try} 40... Bd7 $14 41. Rf3 exf4 42. hxg6 fxg6) 41. Bxh8 $18 ({Inferior is} 41. Qxf4 Be5 42. Bxe5 Rxe5 $11) 41... Kxh8 (41... Rxe4 {might work better.} 42. Nxf4 Bd7) 42. Qxf4 {Qf6+ would kill now.} f5 $2 (42... Kg8 43. h6 f6) 43. gxf6 g5 44. Qe3 $40 {[%mdl 128] White has strong attack.} (44. Qxd6 $18 Rxe4 45. Nc3) 44... Qxe3 $16 45. Rxe3 Re5 (45... Rf7 $16 {was called for.}) 46. Nd4 $18 Bd7 47. Nf3 h6 $2 (47... Ree8 48. Nxg5 Rf8) 48. Nxe5 dxe5 {[%mdl 4096] Endgame KRR-KRB} 49. Rc3 Rc8 50. Rf1 Bg4 51. f7 Kg7 {[#]} 52. Rxc4 $1 {[%mdl 512]} Rf8 (52... Rd8 53. Rc6) 53. Rc6 Bxh5 54. Re6 Be2 55. Rf2 Bd3 56. Rxe5 Rxf7 57. Rxf7+ Kxf7 58. d6 {Intending d7 and mate.} Bb5 {[#]} 59. Rxb5 $1 {Weighted Error Value: White=0.29 (precise) /Black=0.66} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.19"]
[White "Urkedal, Frode Olav Olsen"]
[Black "Zysko, Jan"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2553"]
[BlackElo "2092"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,83,22,22,23,21,28,10,43,17,33,18,29,25,35,18,18,23,45,32,39,14,7,16,12,6,29,26,25,9,15,13,9,-1,21,28,36,42,41,21,20,7,12,16,15,13,19,9,40,13,14,13,33,34,45,28,129,0,37,54,63,50,54,47,89,48,317,284,266,272,263,270,398,398,2265,2034]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nbd2 Nbd7 6. b3 Be7 {D30: Queen's Gambit Declined: Systems without Nc3.} 7. Bb2 O-O 8. Bd3 dxc4 {The position is equal.} 9. Nxc4 c5 10. O-O b6 11. Qe2 Bb7 12. Rac1 Rc8 {[%cal Ba8c8,Bc8c7,Bc7d7][%mdl 32]} 13. Rfd1 {[#]} Rc7 $146 ({Predecessor:} 13... Bxf3 14. Qxf3 cxd4 15. exd4 Nd5 16. g3 a5 17. a3 Rc7 18. h4 N7f6 19. Ne5 Bd6 {½-½ (84) Tleptsok,R (2524)-Mannanov,R (2399) ICCF email 2018}) 14. dxc5 Bxc5 15. Nce5 Nxe5 16. Bxe5 {[%cal Od3h7] And now Bxh7+! would win.} Rd7 17. Ng5 {Bxf6 is the strong threat.} g6 $1 ({Much less strong is} 17... h6 18. Bxf6 gxf6 19. Nh7 $16) 18. Ba1 Be7 19. Bc4 {[%cal Og5e6] Black must now prevent Nxe6!} Rxd1+ 20. Rxd1 Qc8 21. Nf3 Qc6 22. Qb2 Rd8 23. Rxd8+ Bxd8 24. Bf1 Qd5 25. Be2 Be7 26. h3 h5 27. Ne1 Qa5 28. Kf1 Qd5 29. a4 Qd6 30. Kg1 Qb4 31. Nd3 Qe4 {[%csl Gb7][%cal Re4g2]} 32. Nf4 {Strongly threatening Bf3.} Qb4 {[#]} (32... Qf5 $11) 33. Nd3 (33. Qe5 $1 $16 {[%cal Re5b8] aiming for Qb8+.} Be4 34. Bf1 (34. Qb8+ Kg7 $16)) 33... Qe4 $14 {[%csl Gb7][%cal Re4g2]} 34. Bf1 Qd5 35. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} Kf8 36. f3 Bc6 (36... Qc6 $14 {is more appropriate.}) 37. Qc2 ({White should play} 37. e4 $16 Qd8 38. b5) 37... Nd7 $2 {[%mdl 8192] This move loses the game for Black.} (37... Bb7 $14) 38. e4 {[%cal Be3e4,Be4e5][%mdl 32]} Qd6 {[#]} 39. e5 $1 Qc7 40. b5 Bc5+ (40... Nc5 {keeps fighting.} 41. bxc6 Qxc6 42. Nxc5 Bxc5+ 43. Kh1 Qd5) 41. Nxc5 $18 Bd5 $2 {[#]} (41... Nxc5 42. bxc6 Qxc6) 42. Nxe6+ $1 {Weighted Error Value: White=0.11 (very precise) /Black=0.30} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.20"]
[White "Janous, Marek"]
[Black "Unneland, Mathias"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2078"]
[BlackElo "2262"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,72,11,-18,-27,-20,41,34,58,17,18,17,23,20,19,11,16,-81,-74,-79,-79,-81,-75,-95,-61,-62,-60,-56,-63,-74,-68,-79,-38,-116,-108,-91,-30,-89,-89,-133,-87,-93,-93,-375,-370,-351,-383,-411,-395,-469,-460,-445,-445,-12836,-8559,-4794,-1216]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 {[%cal Bg8f6,Bf6d5,Bd5b6][%mdl 32]} 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. Nd2 O-O-O 10. Qe4 Nb6 {C45: Scotch Game.} 11. b3 Re8 (11... d6 $11) 12. Bb2 $14 f6 {[%cal Rf6e5] White is slightly better.} 13. f4 (13. Be2 $14 {should be considered.}) 13... fxe5 $11 14. fxe5 g6 15. O-O-O Bg7 {[%cal Rg7e5] [#]} 16. Nf3 $146 ({Predecessor:} 16. Kb1 Bb7 17. Bd3 c5 18. Qe2 Qg5 19. Be4 Bxe4+ 20. Qxe4 Rhf8 21. Rhe1 Rf2 22. Re2 Rxe2 23. Qxe2 {½-½ (34) Zhang,J (2345)-Kovanova,B (2348) Novokuznetsk 2008}) 16... c5 17. Bd3 (17. Qg4 $11) 17... Bb7 $17 18. Qe1 Bxf3 19. gxf3 Bxe5 20. Be4 Qg5+ 21. Kb1 ({Don't blunder} 21. Qd2 $2 Bf4 22. Bxh8 Bxd2+ 23. Rxd2 Rxh8 $19) 21... Bxb2 22. Kxb2 c6 ({But not} 22... d5 23. cxd5 Rhf8 24. Qd2 Qxd2+ 25. Rxd2 $11) 23. Qa5 Kb8 24. Kb1 Re6 (24... Re5 $17 25. Rd6 Qe7) 25. Rc1 (25. h4 $15 Qe5 26. Bd3) 25... Qe7 26. Rhd1 Rf8 (26... Re5 $17 27. Rc2 Qe6) 27. a4 (27. Rd3 $1 $11 {remains equal.}) 27... Re5 28. Rc2 ({Better is} 28. Rd2) 28... g5 ({Black should try} 28... Rf6 29. Rcd2 d5) 29. h3 h5 {[%cal Og5g4,Bh7h5,Bh5g4,Bg4f3,Bf3f2][%mdl 32] ...g4! is the strong threat.} 30. Qc3 $2 {[%mdl 8192] Loses the game.} (30. Rcd2 $17) 30... g4 $19 31. hxg4 hxg4 32. a5 {[#]} gxf3 $1 33. axb6 {[%cal Od1d7] Threatens to win with Rxd7!} (33. Bd3 Nc8) 33... Rxe4 {Black is clearly winning.} 34. Qa5 d6 {Hoping for ...f2.} 35. Rxd6 (35. bxa7+ $142 Qxa7 36. Qxa7+ Kxa7 37. Kb2) 35... Re1+ 36. Ka2 f2 {Weighted Error Value: White=0.68/Black=0.13 (very precise)} 0-1

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.21"]
[White "Bomans, Arno"]
[Black "Yakimenko, Alexander A."]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2246"]
[BlackElo "2055"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,147,20,56,52,62,21,21,26,20,20,18,22,32,18,28,26,27,0,0,0,1,-1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-7,-7,-7,-7,-52,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,62,0,0,0,0,0,0,0,0,0,49,49,49,49,49,49,49,35,96,74,96,49,49,49,49,49,49,49,49,49,56,56,56,49,56,56,56,56,56,56,56,56,56,56,56,49,115,49,49,49,49,49,49,49,50,55,56,0,49,20,20,0,93,20,20,20,20,20,20,12,24,0]} 1. Nf3 e6 2. c4 f5 3. g3 Nf6 4. Bg2 b6 5. O-O Bb7 6. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Be7 7. d5 O-O 8. Nc3 Na6 9. Nd4 {[%cal Od5d6] [#] Black must now prevent d6! A84: Dutch Defence: 2 c4 Miscellaneous.} Qc8 10. Qc2 (10. Bf4 $14 {might be stronger.}) 10... Nb4 $11 {[%csl LRc2,LRd5] [#]} 11. Qb3 $146 {The position is equal.} ({Predecessor:} 11. Qd1 c5 12. Nc2 Nxc2 13. Qxc2 exd5 14. cxd5 d6 15. Bg5 Qd7 16. Rad1 Ng4 17. Bf4 {½-½ (29) Skatchkov,P (2491)-Galiev,A (2235) Uljanovsk 2009}) 11... c5 12. Nc2 exd5 13. Nxb4 cxb4 14. Nxd5 Nxd5 15. cxd5 {[#] Strongly threatening d6+.} Bc5 16. Bf4 d6 17. Bf3 Qd8 18. h4 Qd7 19. Qd1 Rae8 20. Qd2 a5 21. h5 h6 22. Kg2 Qf7 23. Rac1 Qf6 24. Rfd1 Ba6 25. e3 Re7 26. Rh1 Rfe8 27. Rh4 Kh8 28. Rch1 Bb5 29. Rg1 a4 30. Rhh1 (30. Be2 $11 Bxe2 31. Qxe2) 30... a3 (30... Bc4 $15) 31. b3 Ba6 32. Rc1 Bb5 33. Rhg1 Ba6 34. Kh1 Bb5 35. Rgd1 Ba6 36. Rc2 Bb5 37. Kg2 Ba6 38. Qc1 Bb5 (38... Kg8 $11) 39. Rdd2 (39. Qa1 $1 $14) 39... Ba6 40. Qh1 Bb5 41. Rd1 Ba6 42. Qh3 Bb5 43. Qh4 {And now Qxf6 would win.} Qxh4 (43... Qf7 $1 $11) 44. gxh4 $14 Rd8 45. Rcc1 Ba6 46. Rd2 Bb5 47. Bd1 Ba6 (47... Be8 $14) 48. Bc2 Rf7 49. Kf3 (49. Bd3 $16 Bc8 50. Bb5) 49... Bb5 50. Rg1 Rf6 51. Bd1 Rg8 52. Rg3 Be8 53. Kg2 Bb5 54. Bf3 Rgf8 55. Rd1 Kh7 56. Kh2 R6f7 57. Rg6 Rd8 58. Rd2 Kh8 59. Bd1 Kh7 60. Bc2 Kh8 61. Kg2 Ba6 (61... Be8 $14) 62. Kf3 (62. Bd3 $16 Bb7 63. Bc4) 62... Bb5 $1 63. Bd1 Be8 64. Rg3 Re7 65. Kg2 Bb5 66. Kh2 Rf7 67. Rg6 (67. Be2 $14 Be8 68. Rd1) 67... Re7 (67... Kh7 $1 $11) 68. Kg2 Rf7 69. Bc2 (69. Be2 $11 Be8 70. Kh1) 69... Ba6 $16 70. Rg3 ({White should play} 70. Bd3 $16 Bb7 71. Bc4) 70... Bb5 $11 71. Rf3 Rf6 72. Bd1 Be8 73. Rg3 Bb5 74. Bc2 {Weighted Error Value: White=0.05 (flawless) /Black=0.07 (flawless)} 1/2-1/2

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.22"]
[White "Cholleti Sahajasri"]
[Black "Gajdos, Daniel"]
[Result "1-0"]
[ECO "D41"]
[WhiteElo "2235"]
[BlackElo "2076"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,53,4,13,20,27,12,14,9,43,37,163,88,191,197,195,200,197,200,415,182,753,518,516,501,506,485,616,575,768,762,768,800,986,931]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bc4 Nd7 12. O-O {D41: Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5.} b6 13. Rad1 Bb7 14. Bd3 {[#] The position is equal.} e5 $146 ({Predecessor:} 14... Rc8 15. Rfe1 Qf6 16. e5 Qe7 17. Ng5 h6 18. Ne4 Bxe4 19. Bxe4 Rfd8 20. f4 g6 21. Kh1 Nf8 22. Rc1 Qa3 23. Rxc8 Rxc8 {½-½ (23) Hracek,Z (2606)-Macieja,B (2618) Novi Sad 2009}) 15. d5 f5 (15... Nc5 $14) 16. exf5 (16. Ng5 $18) 16... Nc5 (16... Bxd5 $16 17. Be2 Nf6) 17. Nxe5 $18 {[%cal Od5d6] Strongly threatening d6!} Qd6 18. Rfe1 Rae8 19. f4 b5 $2 (19... Nxd3 {might work better.} 20. Qxd3 Rc8) 20. Qe3 (20. Bxb5 $142 Re7 21. Qb4) 20... Qxd5 $2 {[#]} (20... Nxd3 21. Qxd3 a6) 21. Bc4 $1 {[%mdl 512] White is clearly winning.} Qxc4 22. Nxc4 Rxe3 23. Nxe3 a5 24. Nd5 b4 25. Re5 {[#] And now Ne7+ would win.} Bxd5 26. Rdxd5 Nb7 27. Rd7 {Black did not feel at home in the position after the opening.  Weighted Error Value: White=0.53/Black=0.70} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.23"]
[White "Matras, Ondrej"]
[Black "Llopis de Aysa, Manuel"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2223"]
[BlackElo "2035"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,51,47,52,43,33,28,3,4,2,62,53,63,42,55,52,63,0,20,15,50,-32,-25,-19,0,-62,-70,-50,-46,-50,-58,-54,66,85,240,235,236,225,302,261,258,265,327,324]} 1. d4 d6 2. e4 g6 3. c4 Bg7 4. Nc3 e5 5. d5 a5 6. Bd3 Na6 {A42: Modern Defence: Averbakh Variation.} 7. Be3 Bd7 8. Qd2 f5 {[#] The position is equal.} 9. f3 $146 ({Predecessor:} 9. exf5 gxf5 10. f3 Nc5 11. Nge2 Nxd3+ 12. Qxd3 Qh4+ 13. Bf2 Qh6 14. O-O Nf6 15. Nb5 {0-1 (41) Molina Mansilla,R (2319)-Vassallo Barroche,M (2391) Cala Galdana 1999}) 9... Nf6 ({Black should play} 9... Nb4 $11) 10. exf5 $14 gxf5 11. Nge2 O-O 12. O-O-O a4 {[%cal Oa4a3]} 13. Bh6 {White is more active.} (13. Bb1 $14) 13... Nc5 14. Bc2 Nh5 15. g4 (15. Bg5 $14 Qe8 16. Rhg1) 15... fxg4 $15 16. fxg4 Nf4 17. g5 ({White should try} 17. Bxg7 $11 Nxe2+ 18. Nxe2 Kxg7 19. Rhg1) 17... Bxh6 18. gxh6 {[#] Threatens to win with Nxf4.} Qh4 19. Rhg1+ {[%cal Bh1g1,Bg1g7,Bg7c7][%mdl 32]} Kh8 20. Nxf4 Qxf4 (20... Rxf4 $15 21. Rg7 Bf5 22. Bxf5 (22. Rxc7 Bxc2 23. Qxc2 Qxh6 $17) 22... Rxf5 23. Rxc7 Rf2) 21. Rg7 Qxd2+ $2 {Black cannot hold the game after this.} (21... Bf5 $16) 22. Rxd2 $18 {The board is on fire.} Bf5 (22... Rf1+ $2 23. Rd1 Raf8 24. Ne4 (24. Bxh7 Rxd1+ 25. Nxd1 Rf4 $11) (24. Rxh7+ Kg8 $16)) 23. Rxc7 Bxc2 24. Kxc2 {aiming for Nb5. White has a decisive advantage.} Rf6 25. Nb5 {[%cal Ob5d6] Strongly threatening Nxd6!} Rxh6 {[#]} 26. Nxd6 $1 {[%mdl 512] Weighted Error Value: White=0.17 (very precise) /Black=0.37} 1-0

[Event "20th Prague Open 2022"]
[Site "Prague"]
[Date "2022.01.10"]
[Round "5.24"]
[White "Kukucka, Matej"]
[Black "Babula, Vlastimil"]
[Result "1/2-1/2"]
[ECO "E76"]
[WhiteElo "2104"]
[BlackElo "2561"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventCountry "CZE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,61,0,-12,-18,-20,-12,-9,-29,0,0,37,0,0,2,50,70,323,110,445,312,259,144,158,97,123,129,115,-4,-6,-8,395,390,560,555,1278,1271,1652,1706,1654,1608,1504,1446,1476,0,0,0,1206,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Nfd7 8. Bd2 Nxc5 9. Bc2 {E76: King's Indian: Four Pawns Attack: Lines specific to 6 Nf3 move-order.} Nc6 10. Nd5 Qd8 11. b4 {The position is equal.} Ne6 12. Nf3 {[#]} Ned4 $146 ({Predecessor:} 12... O-O 13. Rb1 Ned4 14. Nxd4 Nxd4 15. Bc3 Bg4 16. Qd2 e5 17. Bxd4 exd4 18. f5 gxf5 {1-0 (28) Garcia Palermo,C (2465)-Yurtaev,L (2515) Manila 1992}) 13. Nxd4 (13. Bc3 {seems wilder.} Bg4 14. b5 Nb4 15. Bxb4 Nxc2+ 16. Qxc2 Bxa1 17. e5) 13... Bxd4 14. Rb1 e5 (14... O-O $11 {might be stronger.}) 15. f5 $36 {[%mdl 2048] White has the initiative.} f6 $2 {[%mdl 8192]} (15... a5 $1 $14) 16. b5 $2 (16. Rf1 $18 {has better winning chances.}) 16... Nb8 $2 {[%mdl 8192]} (16... Na5 $16 {is a better chance.}) 17. Qf3 {[#] fxg6 is the strong threat.} Nd7 18. h4 (18. Rf1 $18) 18... b6 19. Rf1 {White is much more active. Black has bad knights.} ({White should try} 19. fxg6 hxg6 20. Qg3) 19... Bb7 $16 20. fxg6 hxg6 21. Bg5 Bxd5 $11 22. exd5 O-O $2 {[%mdl 8192]} (22... e4 $1 $11 23. Qxe4+ Qe7 24. Qxe7+ Kxe7) 23. Bxg6 $18 ({Weaker is} 23. Bh6 f5 24. Qh3 e4 $18) 23... Kg7 {Inhibits Bh6+.} (23... fxg5 24. Bf7+ Kg7 25. Qh5) (23... Qe7 {was called for.}) 24. Bf5 {[#] Hoping for Qh5.} fxg5 25. Qh5 {White threatens Qg6+ and mate.} Rf7 26. Qg6+ Kf8 27. Qh6+ Ke7 28. Qe6+ ({But not} 28. Bxd7 $2 Rxf1+ 29. Kxf1 Kxd7 $19) 28... Kf8 29. Qh6+ $2 (29. Qxd6+ $18 Ke8 30. Bg6) 29... Ke7 $11 {Strongly threatening ...Qg8.} (29... Ke8 $2 30. Bg6 Nf6 31. Qg7 $18) 30. Qe6+ $2 {[%mdl 8192]} ({Avoid the trap} 30. Bxd7 $2 Rxf1+ 31. Kxf1 Kxd7 $19) (30. Qxg5+ $11 Nf6 31. Be6) 30... Kf8 $18 {[%cal Oe5e4]} 31. Qh6+ $2 {Weighted Error Value: White=0.51/Black=1.21} (31. Qxd6+ $18 Ke8 32. Bg6) 1/2-1/2

