[Event "Hou Yifan Challenge 2021"] [Site "Chess24"] [Date "2021.09.16"] [Round "6.5"] [White "Praggnanandhaa R"] [Black "Liang, Awonder"] [Result "1-0"] [ECO "E73"] [WhiteElo "2617"] [BlackElo "2590"] [Annotator "ChessBase"] [PlyCount "75"] [EventDate "2021.09.18"] [EventCountry "NET"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:02]} g6 {[%emt 0: 00:04]} 3. Nc3 {[%emt 0:00:01]} Bg7 {[%emt 0:00:01]} 4. e4 {[%emt 0:00:00]} d6 {[%emt 0:00:01]} 5. Be2 {[%emt 0:00:01]} O-O {[%emt 0:00:02]} 6. Be3 {[%emt 0: 00:00]} e5 {[%emt 0:00:03]} 7. d5 {[%emt 0:00:02]} Na6 {[%emt 0:00:06]} 8. h4 { [%emt 0:00:03]} Nc5 {[%emt 0:00:09]} 9. Qc2 {[%emt 0:00:02]} h5 {[%emt 0:00:45] } 10. f3 {[%emt 0:00:05]} a5 {[%emt 0:00:19]} 11. Nh3 {[%emt 0:00:13]} c6 { [%emt 0:00:43]} 12. Ng5 {[%emt 0:01:01]} Bd7 {[%emt 0:00:19]} 13. O-O {[%emt 0: 00:44]} cxd5 {[%emt 0:00:14]} 14. cxd5 {[%emt 0:00:04]} Rc8 {[%emt 0:00:01]} 15. Qd2 {[%emt 0:01:09]} Ne8 {[%emt 0:02:35]} 16. Rac1 {[%emt 0:02:41]} Qe7 { [%emt 0:01:00]} 17. b3 {[%emt 0:01:01]} b6 {[%emt 0:00:17]} 18. Nb5 {[%emt 0: 00:38]} Nc7 {[%emt 0:00:19]} 19. Na7 {[%emt 0:01:20]} Ra8 {[%emt 0:00:02]} 20. Nc6 {[%emt 0:00:02]} Qe8 {[%emt 0:00:00]} 21. Bc4 {[%emt 0:00:27]} Kh8 { [%emt 0:00:17]} 22. b4 {[%emt 0:00:03]} axb4 {[%emt 0:00:02]} 23. Qxb4 { [%emt 0:00:01]} b5 {[%emt 0:01:10]} 24. Bxb5 {[%emt 0:00:55]} Nxb5 {[%emt 0:00: 01]} 25. Qxb5 {[%emt 0:00:01]} f6 {[%emt 0:00:06]} 26. Nh3 {[%emt 0:00:08]} Bxh3 {[%emt 0:00:21]} 27. gxh3 {[%emt 0:00:00]} Qd7 {[%emt 0:00:01]} 28. Bxc5 { [%emt 0:00:07]} dxc5 {[%emt 0:00:02]} 29. Qxc5 {[%emt 0:00:01]} Qxh3 {[%emt 0: 00:02]} 30. Qf2 {[%emt 0:00:35]} Bh6 {[%emt 0:00:17]} 31. Rc3 {[%emt 0:00:15]} f5 {[%emt 0:00:35]} 32. Nxe5 {[%emt 0:00:19]} fxe4 {[%emt 0:01:18]} 33. Nxg6+ { [%emt 0:00:10]} Kh7 {[%emt 0:00:01]} 34. Nxf8+ {[%emt 0:00:03]} Rxf8 {[%emt 0: 00:00]} 35. Rc7+ {[%emt 0:00:06]} Kh8 {[%emt 0:00:01]} 36. Qb2+ {[%emt 0:00:03] } Kg8 {[%emt 0:00:03]} 37. Qg2+ {[%emt 0:00:02]} Qxg2+ {[%emt 0:00:05]} 38. Kxg2 {[%emt 0:00:00]} 1-0 [Event "Hou Yifan Challenge 2021"] [Site "Chess24"] [Date "2021.09.16"] [Round "4.6"] [White "Praggnanandhaa R"] [Black "Sokolovsky, Yahli"] [Result "1-0"] [ECO "A11"] [WhiteElo "2617"] [BlackElo "2416"] [Annotator "TA"] [PlyCount "104"] [EventDate "2021.09.18"] [EventCountry "NET"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,104,0,0,0,0,0,0,0,-3,-8,-12,-29,0,0,0,-20,27,31,60,56,106,87,97,77, 105,96,104,92,91,76,91,87,91,83,171,172,166,159,322,323,326,332,321,319,337, 337,337,337,322,275,468,363,444,389,380,368,361,299,480,442,605,603,601,601, 579,581,662,640,726,719,791,714,681,661,712,656,783,785,898,846,952,952,1279, 1266,985,846,783,775,2248,931,29984,29985,29984,29984,29992]} 1. Nf3 d5 2. b3 Nf6 3. Bb2 e6 4. e3 Bd6 5. c4 O-O 6. Nc3 c6 7. Qc2 {A11: English Opening: 1... c6.} e5 8. cxd5 cxd5 9. Nb5 {The position is equal.} Nc6 10. Nxd6 Qxd6 11. Bb5 {With the idea Bxc6.} e4 (11... Nb4 $5 {[%CAl Rb4c2]} 12. Qc1 Re8 $15) 12. Nd4 {[%CAl Rb5c6]} Nb4 {[#]} 13. Qc3 $146 ({Predecessor:} 13. Qb1 a6 14. Bf1 Ng4 15. a3 Nc6 16. Nxc6 bxc6 17. h3 Ne5 18. Be2 Rb8 19. Qc2 {0-1 (75) Benitez Lozano,J (2367)-Kukhmazov,A (2451) Chess.com INT 2021}) 13... a6 {[#]} 14. a3 $1 axb5 (14... Bd7 15. Qxb4) 15. Nxb5 Nd3+ {[#]} 16. Qxd3 $1 {[%mdl 512]} Qb6 ( 16... Qd7 17. Qe2) 17. Qe2 Bg4 18. f3 Bh5 19. Bd4 Qd8 20. O-O Ra6 21. Qf2 exf3 22. gxf3 Ne4 23. fxe4 $18 dxe4 {[#] ...Rg6+ is the strong threat.} 24. Qf4 $1 { Black must now prevent Kf2.} Qd7 $2 {A mistake that costs the game.} (24... Rg6+ $16 25. Kh1 Rg4) 25. Qf5 ({Weaker is} 25. Qxe4 Qxb5 26. Rf2 Rg6+ 27. Rg2 Qxb3 $11) 25... Rg6+ 26. Kh1 Qxf5 27. Rxf5 Bf3+ 28. Rxf3 exf3 29. Rf1 Rc8 30. Nc3 b5 $2 (30... Rg2 31. Ne4 (31. Rxf3 Rxd2 32. b4 Rd3 $14) 31... Rg6) 31. Rxf3 Rb8 32. b4 Ra6 33. Rf5 Rxa3 34. Rxb5 {[%CAl Rb5b8]} Re8 (34... Ra1+ 35. Kg2 Rxb5) 35. Rg5 f6 36. Bxf6 Ra7 37. Bd4 Rb7 38. b5 {[%CAl Bb4b5,Bb5b6][%mdl 32]} h6 39. Rf5 Ra8 40. b6 Kh7 41. Kg2 Kg6 42. Rf4 h5 43. h4 Kh6 44. Kf2 Rg8 45. Ne4 Rd8 46. Ke2 Rd5 47. Ng5 Kg6 48. Nf3 Kh7 49. Re4 Rf5 50. Re6 g6 51. Re8 { [%csl Gd4][%CAl Re8h8]} g5 52. hxg5 Rc5 {Weighted Error Value: White=0.15/ Black=0.38} 1-0 [Event "Hou Yifan Challenge 2021"] [Site "Chess24"] [Date "2021.09.16"] [Round "2.7"] [White "Praggnanandhaa R"] [Black "Vaishali R"] [Result "1-0"] [ECO "D07"] [WhiteElo "2617"] [BlackElo "2414"] [Annotator "TA"] [PlyCount "109"] [EventDate "2021.09.18"] [EventCountry "NET"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,109,109,103,150,143,182,147,201,125,124,116,138,137,150,133,144,144, 152,151,154,152,153,146,166,161,165,134,167,119,120,106,146,103,124,76,232,195, 195,194,195,181,209,197,260,232,240,189,293,246,227,236,233,223,197,208,211, 173,181,182,223,196,227,234,224,232,342,324,328,230,230,230,230,232,343,331, 370,318,615,593,548,435,435,435,629,611,540,249,963,997,4775,4775,4775,4775, 12849,12507,4775,4775,29980,12507]} 1. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. Nc3 Nf6 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e6 {[#] D07: Queen's Gambit: Chigorin Defence.} 8. Rb1 $1 {Threatens to win with Qa4.} Be7 9. Rxb7 O-O (9... Bxf3 $16 10. Qxf3 Na5 ) 10. Be2 Na5 11. Rb1 c5 12. O-O Qc7 {[#]} 13. d5 $146 ({Predecessor:} 13. Ne5 Bxe2 14. Qxe2 cxd4 15. cxd4 f6 16. Nf3 Rfc8 17. Qa6 Kf7 18. d5 exd5 19. exd5 { 1-0 (47) Pedersen,G (2218)-Jensen,I (1985) Helsingor 2011}) 13... exd5 14. exd5 Bd6 15. h3 Bxf3 16. Bxf3 Nc4 17. Be2 Ne5 18. Qa4 Rab8 19. Be3 h6 20. Rb5 Rxb5 21. Bxb5 Ng6 22. Rb1 Rb8 23. Bd3 Ne7 $2 {This costs Black the game.} (23... Nf4 $16 {was worth a try.} 24. Bxf4 Bxf4) 24. c4 Rxb1+ 25. Bxb1 {[%CAl Ra4e8]} Kf8 26. Qb5 Nc8 27. Bf5 Ke7 (27... Ne7 {was called for.}) 28. a4 {[%CAl Ba2a4, Ba4a5][%mdl 32]} Nb6 29. a5 Nc8 (29... Nd7 {is a better defense.} 30. a6 Nb6) 30. Kf1 {Strongly threatening Qa6.} Kd8 31. g3 Ne7 32. Bd3 Qd7 33. Qxd7+ Kxd7 $18 {[%mdl 4096] Endgame KBB-KBN} 34. h4 h5 35. Kg2 g6 36. f3 Kc7 37. g4 Kb7 38. Bd2 Be5 (38... Ng8 $142 39. gxh5 gxh5) 39. Bc2 Kc7 40. gxh5 gxh5 41. f4 Bf6 42. f5 Bxh4 (42... Kd6 $142 43. Bf4+ Be5) 43. Bf4+ Kb7 44. Bd6 Nc8 $2 (44... Ka6 45. Bxc5 Kxa5) 45. Bxc5 Bd8 46. Be4 Kc7 47. a6 Nd6 (47... Nb6 $142 48. Bf3 f6) 48. Bd3 Nc8 49. Bd4 (49. Be2 $142) 49... Nb6 $2 (49... Kd6 50. Be2 Bb6) 50. Kh3 Be7 51. d6+ {[%mdl 64] [#] Decoy} Bxd6 52. c5 {[%mdl 64] Double Attack} Nc8 53. cxd6+ Kxd6 54. Bc4 Ke7 55. f6+ {Weighted Error Value: White=0.28/Black=0.49 } 1-0 [Event "Hou Yifan Challenge 2021"] [Site "Chess24"] [Date "2021.09.16"] [Round "8.4"] [White "Praggnanandhaa R"] [Black "Kiolbasa, Oliwia"] [Result "1-0"] [ECO "D05"] [WhiteElo "2617"] [BlackElo "2376"] [Annotator "ChessBase"] [PlyCount "75"] [EventDate "2021.09.18"] [EventCountry "NET"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] 1. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. b3 {[%emt 0:00:17]} Nf6 { [%emt 0:00:05]} 3. Bb2 {[%emt 0:00:02]} e6 {[%emt 0:00:01]} 4. e3 {[%emt 0:00: 10]} c5 {[%emt 0:00:06]} 5. d4 {[%emt 0:00:03]} Nc6 {[%emt 0:00:47]} 6. Nbd2 { [%emt 0:00:09]} Bd6 {[%emt 0:00:16]} 7. dxc5 {[%emt 0:00:04]} Bxc5 {[%emt 0:00: 02]} 8. a3 {[%emt 0:00:00]} a5 {[%emt 0:00:50]} 9. Bb5 {[%emt 0:01:16]} O-O { [%emt 0:00:08]} 10. O-O {[%emt 0:00:05]} Bd6 {[%emt 0:00:20]} 11. c4 {[%emt 0: 01:05]} Bc7 {[%emt 0:00:53]} 12. Rc1 {[%emt 0:02:13]} Na7 {[%emt 0:01:24]} 13. Ba4 {[%emt 0:00:03]} dxc4 {[%emt 0:00:01]} 14. bxc4 {[%emt 0:00:08]} Qe7 { [%emt 0:00:11]} 15. Qc2 {[%emt 0:02:48]} Rd8 {[%emt 0:00:45]} 16. c5 {[%emt 0: 00:19]} e5 {[%emt 0:01:38]} 17. h3 {[%emt 0:00:03]} Bd7 {[%emt 0:00:39]} 18. Bxd7 {[%emt 0:00:23]} Rxd7 {[%emt 0:00:01]} 19. Rb1 {[%emt 0:00:43]} Rc8 { [%emt 0:00:39]} 20. Ne4 {[%emt 0:00:24]} Nxe4 {[%emt 0:00:27]} 21. Qxe4 { [%emt 0:00:00]} Nc6 {[%emt 0:00:11]} 22. Ba1 {[%emt 0:00:08]} Bb8 {[%emt 0:00: 06]} 23. Rb5 {[%emt 0:00:21]} h6 {[%emt 0:00:38]} 24. g4 {[%emt 0:00:11]} Rcd8 {[%emt 0:00:20]} 25. Bc3 {[%emt 0:00:06]} Rd1 {[%emt 0:00:21]} 26. Bxa5 { [%emt 0:00:43]} Nxa5 {[%emt 0:00:03]} 27. Rxa5 {[%emt 0:00:01]} Qe6 {[%emt 0: 00:43]} 28. Ra8 {[%emt 0:00:12]} Qb3 {[%emt 0:00:25]} 29. Rxd1 {[%emt 0:00:04]} Qxd1+ {[%emt 0:00:06]} 30. Kg2 {[%emt 0:00:01]} Qd7 {[%emt 0:00:15]} 31. a4 { [%emt 0:00:13]} Qe7 {[%emt 0:00:04]} 32. a5 {[%emt 0:00:08]} Qxc5 {[%emt 0:00: 10]} 33. Qxb7 {[%emt 0:00:02]} Qd6 {[%emt 0:00:01]} 34. a6 {[%emt 0:00:05]} e4 {[%emt 0:00:03]} 35. Qxe4 {[%emt 0:00:02]} Qb6 {[%emt 0:00:03]} 36. Qb7 { [%emt 0:00:07]} Bc7 {[%emt 0:00:14]} 37. Qxb6 {[%emt 0:00:04]} Bxb6 {[%emt 0: 00:04]} 38. Rxd8+ {[%emt 0:00:00]} 1-0 [Event "Hou Yifan Challenge 2021"] [Site "Chess24"] [Date "2021.09.16"] [Round "7.4"] [White "Murzin, Volodar"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "B40"] [WhiteElo "2513"] [BlackElo "2617"] [Annotator "ChessBase"] [PlyCount "60"] [EventDate "2021.09.18"] [EventCountry "NET"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:02]} e6 {[%emt 0: 00:01]} 3. g3 {[%emt 0:00:01]} Nc6 {[%emt 0:00:01]} 4. Bg2 {[%emt 0:00:01]} Nf6 {[%emt 0:00:02]} 5. Qe2 {[%emt 0:00:02]} e5 {[%emt 0:00:01]} 6. O-O {[%emt 0: 00:02]} Be7 {[%emt 0:00:01]} 7. Nc3 {[%emt 0:00:01]} d6 {[%emt 0:00:01]} 8. Nd5 {[%emt 0:00:49]} Be6 {[%emt 0:00:05]} 9. Nxf6+ {[%emt 0:00:58]} Bxf6 {[%emt 0: 00:04]} 10. d3 {[%emt 0:00:11]} O-O {[%emt 0:00:14]} 11. c3 {[%emt 0:00:42]} d5 {[%emt 0:01:37]} 12. Ng5 {[%emt 0:03:06]} Bxg5 {[%emt 0:00:32]} 13. Bxg5 { [%emt 0:00:04]} f6 {[%emt 0:01:24]} 14. Be3 {[%emt 0:01:18]} d4 {[%emt 0:00:12] } 15. Bd2 {[%emt 0:00:52]} b5 {[%emt 0:00:40]} 16. Rfc1 {[%emt 0:00:34]} Qd6 { [%emt 0:01:14]} 17. Bf1 {[%emt 0:01:18]} Rac8 {[%emt 0:00:48]} 18. Qe1 { [%emt 0:00:08]} a5 {[%emt 0:00:38]} 19. a4 {[%emt 0:00:13]} dxc3 {[%emt 0:00: 06]} 20. bxc3 {[%emt 0:00:17]} b4 {[%emt 0:00:01]} 21. Be3 {[%emt 0:00:01]} Rfd8 {[%emt 0:00:54]} 22. Rc2 {[%emt 0:00:36]} f5 {[%emt 0:00:46]} 23. f3 { [%emt 0:00:09]} fxe4 {[%emt 0:01:23]} 24. dxe4 {[%emt 0:00:08]} c4 {[%emt 0:00: 01]} 25. cxb4 {[%emt 0:00:27]} Nd4 {[%emt 0:00:06]} 26. Rf2 {[%emt 0:00:08]} axb4 {[%emt 0:00:05]} 27. f4 {[%emt 0:00:03]} c3 {[%emt 0:00:18]} 28. Rc1 { [%emt 0:00:05]} Bg4 {[%emt 0:00:23]} 29. Kg2 {[%emt 0:00:06]} Qc6 {[%emt 0:00: 15]} 30. Bd3 {[%emt 0:00:07]} Nb3 {[%emt 0:00:02]} 0-1 [Event "Hou Yifan Challenge 2021"] [Site "Chess24"] [Date "2021.09.16"] [Round "5.3"] [White "Lei, Tingjie"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "B90"] [WhiteElo "2505"] [BlackElo "2617"] [Annotator "TA"] [PlyCount "82"] [EventDate "2021.09.18"] [EventCountry "NET"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,82,24,32,31,21,25,30,22,14,27,24,23,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,-18,-9,-10,-9,-28,-12,-95,-99,-90,-77,-109,-43,-51,-43,-94,-82,-83,-89,-85,0, -102,-101,-140,-125,-129,-111,-250,-224,-231,-220,-232,-147,-158,-145,-156, -123,-903,-850]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 h5 9. Qd2 Nbd7 10. Nd5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Bxd5 11. exd5 g6 12. O-O-O {White has an edge.} Nb6 13. Kb1 Nbxd5 14. Bg5 {[#] Black must now prevent Qxd5!} Be7 $1 15. c4 {15.Bd3 is the modern continuation.} Nb6 16. Bxf6 Bxf6 17. Qxd6 Qxd6 18. Rxd6 {[#]} Na4 $146 ({Predecessor:} 18... Bd8 19. c5 Nd7 20. Bc4 Nf6 21. Re1 O-O 22. Rxe5 Bc7 23. Rxf6 Bxe5 24. Rxg6+ Kh7 {1-0 (35) Mekhitarian,K (2554) -Hosseinzadeh,N (2217) Chess.com INT 2020}) 19. Be2 Rd8 20. Rhd1 Rxd6 21. Rxd6 Ke7 22. Rd5 Rc8 23. Nd2 Bg7 24. Ra5 Nc5 25. b4 Ne6 26. Ne4 (26. Nb3 $11) 26... f5 $17 27. Nc3 e4 $36 {[%mdl 2048] Black is on the roll.} 28. Nd5+ {[#]} Kf8 ( 28... Kf7 $1 $17 {And now ...Nd4 would win.} 29. fxe4 fxe4) 29. fxe4 $15 fxe4 30. c5 (30. Bf1 $15) 30... Nd4 $17 31. Bc4 Bh6 32. Ra3 Re8 (32... Kg7 $17 33. Ne3 Rd8) 33. Ne3 (33. Nf6 $1 $11 {was the only way to keep the balance.} Re7 34. Ng8) 33... Kg7 34. Bd5 Re7 35. Rc3 Kf6 36. a4 (36. Nc2 $17 {is a better defense.}) 36... Ke5 $19 37. Bc4 Bxe3 38. Rxe3 Nf5 39. Re1 Kd4 40. Be2 Kc3 { Threatens to win with ...Kd2.} 41. b5 $2 {[%mdl 8192]} (41. Rc1+ $17 Kxb4 42. c6) 41... Kd2 {Weighted Error Value: White=0.39/Black=0.08} 0-1 [Event "Hou Yifan Challenge 2021"] [Site "Chess24"] [Date "2021.09.16"] [Round "9.5"] [White "Mammadzada, Gunay"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "B42"] [WhiteElo "2459"] [BlackElo "2617"] [Annotator "ChessBase"] [PlyCount "100"] [EventDate "2021.09.18"] [EventCountry "NET"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:02]} e6 {[%emt 0: 00:01]} 3. d4 {[%emt 0:00:02]} cxd4 {[%emt 0:00:01]} 4. Nxd4 {[%emt 0:00:00]} a6 {[%emt 0:00:01]} 5. Bd3 {[%emt 0:00:03]} Bc5 {[%emt 0:00:02]} 6. Nb3 { [%emt 0:00:03]} Ba7 {[%emt 0:00:01]} 7. Qe2 {[%emt 0:00:02]} Nc6 {[%emt 0:00: 18]} 8. Be3 {[%emt 0:00:06]} d6 {[%emt 0:00:26]} 9. c4 {[%emt 0:00:10]} Nf6 { [%emt 0:00:16]} 10. Bxa7 {[%emt 0:00:16]} Rxa7 {[%emt 0:00:03]} 11. Nc3 { [%emt 0:00:02]} O-O {[%emt 0:00:17]} 12. Rd1 {[%emt 0:01:17]} e5 {[%emt 0:00: 21]} 13. O-O {[%emt 0:00:09]} Be6 {[%emt 0:00:03]} 14. Qe3 {[%emt 0:00:11]} Ra8 {[%emt 0:00:27]} 15. Be2 {[%emt 0:00:04]} Qc7 {[%emt 0:00:11]} 16. Rc1 { [%emt 0:00:25]} Ne7 {[%emt 0:00:36]} 17. Nd5 {[%emt 0:00:41]} Bxd5 {[%emt 0:00: 07]} 18. cxd5 {[%emt 0:00:03]} Qd7 {[%emt 0:02:25]} 19. Na5 {[%emt 0:00:20]} Rfc8 {[%emt 0:00:19]} 20. Nc4 {[%emt 0:00:14]} Qd8 {[%emt 0:00:50]} 21. Nb6 { [%emt 0:01:09]} Rxc1 {[%emt 0:00:03]} 22. Rxc1 {[%emt 0:00:02]} Rb8 {[%emt 0: 00:01]} 23. f3 {[%emt 0:00:13]} Nd7 {[%emt 0:01:47]} 24. Nc4 {[%emt 0:00:03]} Rc8 {[%emt 0:00:05]} 25. Rc3 {[%emt 0:00:21]} b5 {[%emt 0:00:58]} 26. Nxd6 { [%emt 0:01:54]} Rxc3 {[%emt 0:00:02]} 27. bxc3 {[%emt 0:00:00]} Qc7 {[%emt 0: 00:30]} 28. Nf5 {[%emt 0:01:11]} Nxf5 {[%emt 0:00:03]} 29. exf5 {[%emt 0:00:00] } Nf6 {[%emt 0:00:43]} 30. c4 {[%emt 0:00:44]} bxc4 {[%emt 0:00:09]} 31. d6 { [%emt 0:00:07]} Qxd6 {[%emt 0:00:37]} 32. Bxc4 {[%emt 0:00:02]} h6 {[%emt 0:00: 43]} 33. Bb3 {[%emt 0:01:00]} a5 {[%emt 0:00:04]} 34. h3 {[%emt 0:00:18]} Nd7 { [%emt 0:00:05]} 35. Kh1 {[%emt 0:01:01]} Nc5 {[%emt 0:00:02]} 36. Qc3 {[%emt 0: 00:15]} a4 {[%emt 0:00:08]} 37. Bc4 {[%emt 0:00:04]} Qd4 {[%emt 0:00:15]} 38. Qb4 {[%emt 0:00:27]} Kh7 {[%emt 0:00:02]} 39. f6 {[%emt 0:00:08]} gxf6 { [%emt 0:00:05]} 40. Qb1+ {[%emt 0:00:01]} Kg7 {[%emt 0:00:01]} 41. Be2 { [%emt 0:00:09]} a3 {[%emt 0:00:07]} 42. Qc1 {[%emt 0:00:05]} Qb4 {[%emt 0:00: 06]} 43. Qe3 {[%emt 0:00:05]} Ne6 {[%emt 0:00:03]} 44. Qf2 {[%emt 0:00:05]} Qf4 {[%emt 0:00:07]} 45. Bf1 {[%emt 0:00:08]} e4 {[%emt 0:00:06]} 46. Kg1 {[%emt 0: 00:06]} e3 {[%emt 0:00:02]} 47. Qc2 {[%emt 0:00:03]} Qd4 {[%emt 0:00:05]} 48. Be2 {[%emt 0:00:05]} Nf4 {[%emt 0:00:04]} 49. g3 {[%emt 0:00:03]} Qb2 {[%emt 0: 00:09]} 50. Bd1 {[%emt 0:00:16]} e2 {[%emt 0:00:01]} 0-1 [Event "Hou Yifan Challenge 2021"] [Site "Chess24"] [Date "2021.09.16"] [Round "3.2"] [White "Zhu, Jiner"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "A48"] [WhiteElo "2455"] [BlackElo "2617"] [Annotator "TA"] [PlyCount "68"] [EventDate "2021.09.18"] [EventCountry "NET"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,68,0,0,0,0,0,15,0,6,0,0,-4,0,0,0,-12,0,-13,0,-52,-46,-72,-66,-80,-64, -59,6,7,20,0,45,50,58,0,55,-118,-75,-103,-103,-98,-98,-98,-48,-56,-43,-54,-62, -86,-86,-177,-96,-2215,-2188]} 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6 6. Nbd2 Nbd7 7. Be2 b6 8. O-O Bb7 9. c3 Qe8 10. Bh2 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} e5 11. a4 a6 12. Qb3 {The position is equal. 12.dxe5 gains popularity.} Qe7 13. Rfd1 a5 14. Qc2 Rfe8 15. dxe5 dxe5 16. Nc4 Ne4 {[#]} 17. Nfd2 $146 ({Predecessor:} 17. Na3 h5 18. Nb5 Nf8 19. Na3 Nc5 20. Nd2 Red8 21. Bf3 e4 22. Be2 Nfe6 23. Nb5 Nd3 24. Nxe4 Bxe4 25. Rxd3 Bxd3 26. Bxd3 {0-1 (51) Sychev,V (2314)-Alikhanov,F (2392) Tambov 2008}) 17... Nxd2 18. Rxd2 (18. Nxd2 $11 Nc5 19. Bc4) 18... Nc5 $15 19. b3 h5 20. Rad1 Bc6 (20... Kh7 {is more complex.} 21. Qa2 Bc6 22. Qc2 f5 23. f3 Qg5) 21. f3 $1 h4 (21... e4 $15) 22. e4 $11 Qg5 23. Kh1 f5 24. exf5 gxf5 25. Bf1 (25. Na3 $14) 25... Kh8 ( 25... e4 $11) 26. Bg1 $2 (26. Na3 $14 {stays ahead.}) 26... e4 $17 27. f4 Qxf4 28. Be3 Qg3 $36 {[%mdl 2048] White must now prevent ...f4. Black is on the roll.} 29. Rf2 Qg6 30. Rf4 Nd3 $1 {[%CAl Rd3f4]} 31. Rxh4+ Kg8 {Hoping for ... Qg3.} 32. Bxd3 exd3 33. Qf2 {[#]} (33. Rxd3 $17 Be4 34. Rxe4 Rxe4 35. Rd7) 33... Rad8 ({Don't go for} 33... Bxc3 $2 34. Rh6 $18) (33... Re6 $1 $19 { And now ...Rae8 would win.} 34. Rf4 Qh5) 34. Nd2 $2 {[%mdl 8192] [#]} (34. Rd2 $17) 34... Rxe3 $1 {[%mdl 512] Weighted Error Value: White=0.40/Black=0.19} 0-1 [Event "Hou Yifan Challenge 2021"] [Site "Chess24"] [Date "2021.09.16"] [Round "1.1"] [White "Daggupati, Balaji"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "B87"] [WhiteElo "2442"] [BlackElo "2617"] [Annotator "TA"] [PlyCount "108"] [EventDate "2021.09.18"] [EventCountry "NET"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 22,108,62,11,22,6,36,31,40,-44,-48,-33,-27,-52,-61,-48,-29,-37,-30,-29, -31,-25,0,0,0,0,27,0,13,12,12,13,24,31,78,62,64,14,14,14,106,103,114,70,53,-11, -11,-77,-79,-133,-94,-296,-295,-386,-368,-370,-370,-465,-458,-1075,-1040,-968, -750,-6510,-5622,-29973,-29974,-29973,-29972,-29973,-29974,-29975,-29976, -29980,-29981,-29981,-29982,-29982,-29983,-29983,-29983,-29983,-29984,-29984, -29985,-29985,-29986,-29986,-29987]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. O-O Be7 9. Qf3 Qb6 10. Be3 Qb7 11. Qg3 Nbd7 12. Rfe1 (12. Rad1 $14) 12... b4 {B87: Sicilian Scheveningen/Najdorf: 6 Bc4, with early ...b5.} 13. Na4 ({Avoid the trap} 13. Qxg7 $2 Rg8 $19) 13... Qxe4 14. Rad1 ({Don't blunder} 14. Qxg7 $2 Rg8 $19) 14... Qg4 {[#] White is slightly better.} 15. Bf4 $146 (15. Qxg4 $1 $14 Nxg4 16. Bd2) ({Predecessor:} 15. Nc6 Qxg3 16. hxg3 a5 17. c3 bxc3 18. Nxc3 Bb7 19. Nxe7 Kxe7 20. Nb5 Ra6 21. Rc1 {0-1 (69) Gara,A (2235)-Bigaliev,R (2430) Budapest 1996}) 15... Qxg3 $15 16. Bxg3 d5 17. Nf5 exf5 18. Bd6 $1 {[%CAl Rd6e7]} Ne4 19. Bxe7 Kxe7 20. Bxd5 { [%mdl 64] [#] Double Attack} Rb8 {Hoping for ...Kf6.} 21. f3 {[%mdl 64] Pin} Ndf6 22. fxe4 f4 23. Nc5 Rd8 24. Nd3 g5 25. Ne5 {Nc6+ is the strong threat.} Bd7 26. Bxf7 Rb5 27. Bd5 Be8 28. Nf3 (28. c3 {looks sharper.} bxc3 29. bxc3 Rb2 30. c4 h6 31. Rc1) 28... Bh5 29. Rd3 {Black must now prevent Nd4.} Bxf3 30. gxf3 h5 (30... Nd7 $11 {keeps the balance.}) 31. Bc4 $16 Rc5 32. Rxd8 ({But not } 32. Bxa6 $6 Ra8 $11) (32. Red1 {keeps more tension.} Rd7 33. Bb3 a5 34. Kg2 g4 35. Ba4) 32... Kxd8 {[%mdl 4096] Endgame KRB-KRN} 33. b3 (33. Bxa6 $14 Rxc2 34. e5) 33... Nd7 $11 34. Rd1 (34. c3 $1 $11 bxc3 35. Rc1) 34... Ke7 $17 35. Rd5 ({White should try} 35. Rd2) 35... Rxd5 36. Bxd5 {KB-KN. This costs White the game.} (36. exd5 $17 a5 37. h3) 36... Ne5 $19 37. Kf2 Kd6 38. Bc4 {[#]} a5 39. Bf1 Kc5 40. h4 (40. Be2 $142 Kd4 41. h3) 40... gxh4 41. Kg2 Kd4 42. Kh3 Nxf3 43. Bg2 Kxe4 {Black mates.} 44. Bf1 Ke3 45. Ba6 Nd2 46. Kxh4 f3 47. Kxh5 f2 48. Kg5 f1=Q 49. Bxf1 Nxf1 {KN-K3P} 50. Kf5 Kd4 51. Ke6 Kc3 52. Kd5 Kxc2 53. Kc5 Kb2 54. Kb5 Kxa2 {Weighted Error Value: White=0.57/Black=0.09} 0-1