[Event "Prague Festival Challengers 2020"] [Site "Prague"] [Date "2020.02.12"] [Round "1.2"] [White "Krejci, Jan"] [Black "Cernousek, Lukas"] [Result "1/2-1/2"] [ECO "C01"] [WhiteElo "2559"] [BlackElo "2442"] [Annotator "TA"] [PlyCount "91"] [EventDate "2020.02.12"] [EventType "tourn"] [EventCountry "CZE"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,91,22,26,23,35,3,9,12,22,-3,0,-6,0,-7,0,-11,0,0,0,0,0,-9,13,0,27,45,68,71,69,68,58,16,17,0,12,0,0,0,43,0,0,0,18,31,58,60,47,61,66,54,64,58,62,8,8,8,15,0,12,15,19,35,16,20,49,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bd3 Bd6 6. Qe2+ Qe7 7. Qxe7+ Kxe7 8. O-O {C01: French: Exchange Variation.} Re8 9. Bg5 h6 10. Bh4 Nbd7 {[#]} 11. Nbd2 $146 ({Predecessor:} 11. Na3 c6 12. c3 Kf8 13. Rae1 Ne4 14. Bxe4 dxe4 15. Nd2 f5 16. Nac4 Bf4 17. Bg3 {1-0 (42) Kaczmarczyk,D (2411)-Sadeghi,H (2118) Switzerland 2017}) 11... Kf8 12. c4 g5 13. Bg3 Bxg3 14. fxg3 dxc4 15. Nxc4 Kg7 16. Rac1 $36 {[%mdl 2048] White has the initiative.} Nd5 17. h4 f6 18. Nfd2 Nf8 19. Be4 Ne7 20. Rfe1 Rb8 21. d5 {And now Bf3 would win.} Rd8 22. Ne3 c6 $1 23. Bf3 {[%cal Rd5c6]} Nfg6 (23... Be6 {keeps more tension.} 24. dxc6 Rxd2 25. c7 Re8 26. Nc4 Rd4) 24. Nb3 {[%cal Rd5c6]} gxh4 25. dxc6 Nxc6 26. Bxc6 bxc6 27. gxh4 Nxh4 28. Rxc6 Rd7 29. Rc4 Ng6 30. Nf5+ Kh7 31. Rc6 {Hoping for Nc5.} Rf7 32. Nd6 Bb7 33. Rc5 (33. Rc2 $14 Rd7 34. Ne8) 33... Rd7 $11 34. Ne8 Rf7 $1 35. Rf5 Nh4 36. Rxf6 Rxf6 37. Nxf6+ Kg6 38. Nd7 Rg8 39. Re2 (39. Re6+ {is more complex.} Kg5 40. g3 Bc8 41. Nbc5 Bxd7 42. Nxd7 Nf5 43. Re5) 39... Bxg2 {The position is equal.} 40. Rxg2+ Nxg2 41. Kxg2 Kf5+ 42. Kf3 Ke6 43. Ndc5+ Kd5 44. Nd3 Rf8+ 45. Kg4 Ke4 46. Nbc5+ {Accuracy: White = 82%, Black = 88%.} 1/2-1/2 [Event "Prague Festival Challengers 2020"] [Site "Prague"] [Date "2020.02.14"] [Round "3.4"] [White "Krejci, Jan"] [Black "Abasov, Nijat"] [Result "1/2-1/2"] [ECO "E21"] [WhiteElo "2559"] [BlackElo "2670"] [Annotator "TA"] [PlyCount "67"] [EventDate "2020.02.12"] [EventType "tourn"] [EventCountry "CZE"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,67,11,0,0,7,15,9,0,10,0,0,0,-7,-4,0,0,15,9,16,17,25,14,16,28,42,27,46,37,47,35,64,17,14,13,22,22,0,4,19,15,27,8,27,18,19,26,29,41,40,40,41,0,41,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Bd2 Bb7 6. e3 O-O 7. Bd3 d5 8. cxd5 exd5 9. Rc1 {E52: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5 6 Bd3 b6.} Be7 $1 {[%mdl 4] is more profitable than 9...a6 at the moment.} 10. O-O c5 11. Ne5 {The position is equal.} Nc6 12. Nxc6 Bxc6 13. dxc5 bxc5 14. Ne2 {[#]} Rb8 $146 ({Predecessor:} 14... Qb6 15. Bc3 Bb7 16. Ng3 Rfd8 17. Nf5 Bf8 18. Qa4 Qe6 19. Qh4 Ne4 20. f3 Qxf5 21. fxe4 {1-0 (36) Sek,Z-Goebel,W ICCF corr 1986}) 15. Bc3 Qd6 16. b3 Rfe8 ({But not} 16... d4 17. exd4 Qd5 18. f3 $16) 17. Qc2 g6 18. Rfd1 Ng4 19. Ng3 $1 Ba8 20. Be2 Qe6 21. Ba1 Ne5 22. Bf1 Nd7 23. Qc3 {[%csl Ga1][%cal Rc3h8] [#]} Bf6 24. Qa5 Qb6 25. Qa4 Bxa1 26. Rxa1 Nf6 27. Rac1 a5 28. Be2 Rbc8 29. Qb5 Re6 30. Rc2 Qa7 31. Rdc1 {[%cal Rc2c5]} Rec6 32. Qa4 Qb6 33. Qb5 Qa7 34. Qa4 {Accuracy: White = 94%, Black = 95%.} 1/2-1/2 [Event "Prague Festival Challengers 2020"] [Site "Prague"] [Date "2020.02.15"] [Round "4.4"] [White "Krejci, Jan"] [Black "Bartel, Mateusz"] [Result "0-1"] [ECO "D37"] [WhiteElo "2559"] [BlackElo "2639"] [Annotator "TA"] [PlyCount "80"] [EventDate "2020.02.12"] [EventType "tourn"] [EventCountry "CZE"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,86,28,18,58,45,47,33,34,41,54,26,27,26,-8,9,30,-56,-12,-11,-12,-40,-21,-55,0,0,0,0,47,35,36,0,21,30,37,0,6,-100,-78,-75,-77,-66,-17,0,0,-75,0,0,0,0,0,-14,-14,-14,0,-329,-330,-435,-290,-297,-301,-411,-406,-393,-390,-383,-375,-381,-381,-381,-373,-341,-266,-422,-418,-502,-499]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Nbd7 5. Bg5 h6 6. Bh4 c6 7. e3 g5 $1 {[%mdl 4] is recently more successful than 7...Be7. D51: Queen's Gambit Declined: 4 Bg5 Nbd7 sidelines.} 8. Bg3 Nh5 9. Be5 Nxe5 {White is slightly better.} 10. Nxe5 Nf6 11. Bd3 (11. Be2 {seems wilder.} Bg7 12. O-O Nd7 13. f4 O-O 14. Qd3) 11... Nd7 {[#]} 12. O-O $146 (12. Nf3 {is interesting.} dxc4 13. Bxc4 Bg7 14. O-O O-O 15. h3) ({Predecessor:} 12. Nxd7 Bxd7 13. Qh5 Bg7 14. h4 c5 15. cxd5 cxd4 16. Ne4 Qa5+ 17. Ke2 Qxd5 18. hxg5 {½-½ (35) Postny,E (2616)-Artemiev,V (2658) Novi Sad 2016}) 12... Nxe5 13. dxe5 Bd7 14. Qh5 ({White should try} 14. Rc1 $11) 14... Qc7 15. f4 Bc5 16. Rae1 O-O-O {Black wants to play ...gxf4.} 17. Kh1 (17. Qxf7 $2 Rhf8 $17) 17... Kb8 (17... Bxe3 $15 18. cxd5 (18. Rxe3 d4 $11) 18... gxf4) 18. Qxf7 $11 h5 19. cxd5 cxd5 20. Bb5 Rhf8 21. Qg6 Rg8 22. Qd3 Bc8 23. Rc1 {Strongly threatening Na4.} (23. Na4 $5 {[%cal Re1c1]} gxf4 24. Nxc5 $14 (24. exf4 Bf8 $14)) 23... Qg7 {...gxf4 is the strong threat.} 24. Rc2 {[#]} (24. Qe2 $1 $11 {was the only way to keep the balance.}) 24... a6 $1 $17 {[%mdl 1024] Hoping for ...gxf4. Black has strong compensation.} 25. Ba4 Bb6 26. Bb3 Bd7 27. Ba4 $1 Bc8 (27... h4 $11) 28. Bb3 $1 gxf4 ({Black should play} 28... h4 $17) 29. exf4 $11 Bd7 30. Ba4 $1 d4 31. Bxd7 {And now Na4 would win.} dxc3 32. Rd1 Qg4 {Threatens to win with ...Rg7.} 33. h3 $2 {[%mdl 8192]} ({Not} 33. bxc3 $2 Rg7 $19) (33. f5 $1 $11 Rgf8 34. fxe6 Qxe6 35. Bxe6 Rxd3 36. Rb1) 33... Qxf4 $19 34. Rxc3 Rg7 35. Qd6+ Ka7 {( -> ...Rxg2!)} 36. Rc8 Rxc8 37. Bxc8 Qg3 {[%csl Gg7][%cal Rg3g2]} ({Less strong is} 37... Qf2 38. Qd2 $15) 38. Qd2 Bf2 {[%csl Gg7][%cal Rg3g2]} 39. Bxb7 Kxb7 {[%csl Gg7][%cal Rg3g2]} 40. Qb4+ {[#]} Bb6 {Played: Kb7-a7} 0-1 [Event "Prague Festival Challengers 2020"] [Site "Prague"] [Date "2020.02.18"] [Round "6.4"] [White "Krejci, Jan"] [Black "Piorun, Kacper"] [Result "1/2-1/2"] [ECO "D71"] [WhiteElo "2559"] [BlackElo "2611"] [Annotator "TA"] [PlyCount "49"] [EventDate "2020.02.12"] [EventType "tourn"] [EventCountry "CZE"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,49,27,21,37,0,4,0,19,8,8,5,6,0,0,0,18,0,0,0,0,-25,-30,-37,-29,-38,-21,-37,-12,-57,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 c5 5. Nf3 O-O 6. Nc3 cxd4 7. Nxd4 Qc7 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3.} 8. Nd5 Nxd5 9. cxd5 Qb6 10. Nb3 d6 11. O-O Qa6 12. Nd4 Qb6 13. Nb3 Qa6 14. Nd4 Qb6 $36 {[%mdl 2048] White is under pressure.} 15. Nc2 Na6 16. a4 Bd7 17. a5 Qb5 18. Nd4 Qc4 19. Be3 Rfc8 20. Ra3 Nb4 (20... Rc7 $15) 21. Rc3 $11 {The position is equal.} Qa2 22. Ra3 Qc4 23. Rc3 Qa2 24. Ra3 Qc4 25. Rc3 {Accuracy: White = 79%, Black = 87%.} 1/2-1/2 [Event "Prague Festival Challengers 2020"] [Site "Prague"] [Date "2020.02.20"] [Round "8.5"] [White "Krejci, Jan"] [Black "Kriebel, Tadeas"] [Result "0-1"] [ECO "D56"] [WhiteElo "2559"] [BlackElo "2524"] [Annotator "TA"] [PlyCount "124"] [EventDate "2020.02.12"] [EventType "tourn"] [EventCountry "CZE"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 20,124,20,12,23,17,26,0,30,18,17,0,23,26,9,17,25,24,35,35,35,31,39,31,39,31,39,29,43,24,27,24,39,25,29,28,27,1,0,0,15,5,8,5,7,8,22,0,0,-42,-45,-91,-84,-83,-79,-85,-81,-81,-60,-81,-77,-82,0,-75,0,-74,-80,-81,-81,-87,-83,-144,-158,-138,-158,-158,-151,-144,-144,-142,-123,-380,-365,-365,-350,-309,-279,-936,-957,-819,-199,-779,-588,-588,-588,-275,-275,-1135,-1054,-1977,-1854,-4706,-4714,-29985,-29986,-29988,-29989]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nc3 Ne4 8. Bxe7 Qxe7 9. Rc1 c6 10. Bd3 Nxc3 11. Rxc3 dxc4 {D56: Queen's Gambit Declined: Lasker Defence.} 12. Bxc4 Nd7 13. Qc2 b6 {The position is equal.} 14. Bd3 c5 15. Bh7+ Kh8 16. Be4 Rb8 17. O-O Nf6 18. dxc5 Nxe4 19. Qxe4 {Black must now prevent c6.} bxc5 20. b3 Bb7 21. Qf4 Bxf3 22. Qxf3 {[#]} Rbd8 $146 ({Predecessor:} 22... Rfd8 23. Rfc1 Rd2 24. R1c2 Rbd8 25. g3 Rxc2 26. Rxc2 Rd5 27. Kg2 Kg8 28. e4 Rd4 {0-1 (42) Loiseau,Q (2419)-Laurent,J (2221) Belgium 2015}) 23. Rc2 Rd5 24. Rfc1 Rfd8 25. h3 Qd6 26. Qe2 (26. g3 {keeps more tension.} f5 27. Kg2 Qb6 28. Re2 Rd3 29. Rc4) 26... f5 27. g3 a5 28. e4 Re5 29. Rc4 Qd2 30. Qxd2 Rxd2 $11 {[%mdl 4096] Endgame KRR-KRR} 31. a4 fxe4 32. Rxc5 Red5 $1 33. Rc8+ Kh7 34. Re1 Rf5 35. Rxe4 Rfxf2 36. Rc3 Rg2+ 37. Kh1 Rh2+ $1 38. Kg1 Rdg2+ $1 39. Kf1 Ra2 {[%cal Rh2h1]} 40. Kg1 Rag2+ 41. Kf1 Ra2 {[%cal Rh2h1]} 42. Kg1 Rhb2 43. Kf1 Rf2+ 44. Kg1 Rg2+ 45. Kh1 (45. Kf1 $142) 45... Rgb2 $17 46. Re1 Rh2+ 47. Kg1 Rxh3 48. Rxe6 Rhh2 49. Rf3 Rhb2 {...Rb1+ is the strong threat.} 50. Ree3 $2 {[%mdl 8192] This move loses the game for White.} (50. Rb6 $17 {was worth a try.}) 50... Kg6 $1 $19 {[%cal Rg6h5]} 51. Rf4 Kh5 52. Rh4+ {[#]} Kg5 $1 {( -> ...Rb1+)} 53. Rf4 $2 (53. Re5+ Kf6 54. Re1) 53... Ra1+ 54. Rf1 Rxf1+ 55. Kxf1 {KR-KR} Kg4 56. Rd3 g5 57. Rc3 Kh3 58. Rd3 $2 {[#]} (58. Rc6 Kxg3 59. Rxh6) 58... g4 $1 59. Re3 h5 60. Re5 h4 61. Rxa5 Kxg3 62. Rc5 h3 {Accuracy: White = 57%, Black = 98%.} 0-1