[Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.1"] [White "Abu Sufian, Shakil"] [Black "Ganguly, Surya Shekhar"] [Result "0-1"] [ECO "D00"] [WhiteElo "2244"] [BlackElo "2635"] [Annotator "Shahid"] [PlyCount "70"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,70,0,0,0,1,1,-2,-6,2,-2,48,48,45,46,43,27,31,-6,-2,-19,-16,-22,-25, -18,-9,1,8,-143,-13,-41,-68,-81,-21,-33,-32,-38,-42,-45,-29,-101,-47,-212,0,0, 0,0,0,0,0,-170,-175,-265,-258,-243,-247,-234,-156,-509,-500,-881,-835,-727, -723]} 1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. c3 Nc6 5. Nd2 Bf5 6. Qb3 {D00:1 d4 d5: Unusual lines.} Qd7 {6...Qd7 has lost popularity.} 7. Ngf3 c4 8. Qd1 {The position is equal.} e6 9. Nh4 Bg4 $5 {[%mdl 4] A promising side line.} 10. f3 Bh5 11. g4 Bg6 12. Nxg6 hxg6 {[#]} 13. b3 $146 ({Predecessor:} 13. Bg2 Bd6 14. Bg3 Bxg3+ 15. hxg3 Rxh1+ 16. Bxh1 e5 17. Qe2 O-O-O 18. O-O-O Qc7 19. Qf2 exd4 20. exd4 {1/2-1/2 (32) Birkic,J (1831)-Karlusic,L (1936) Vinkovci 2019}) 13... b5 14. a4 (14. bxc4 dxc4 (14... bxc4 15. e4 Ba3 16. Rb1 O-O) 15. a4 b4 16. Bxc4 bxc3 17. Ne4) 14... b4 15. cxb4 {Threatens to win with b5.} c3 16. Nb1 { [%CAl Bd2b1,Bb1a3,Ba3c2][%mdl 32]} Bxb4 {White must now prevent ...c2+.} 17. Kf2 $1 O-O 18. Qc2 $2 (18. Ra2 $11) 18... Ba5 ({Black should try} 18... Qe7 $1 $17 {And now .. .e5 would win.} 19. Bb5 (19. Nxc3 $2 Rac8 $19) 19... e5 $1 20. Bxc6 (20. dxe5 Nxe5 21. Rc1 g5 $17) 20... exf4 21. Bxa8 Nxg4+ $1 22. fxg4 Qxe3+ {[%mdl 64] Double Attack} 23. Kg2 f3+ 24. Kf1 Rxa8) 19. Na3 a6 20. Bd3 Qe7 ( 20... Rfe8 $17 21. Qe2 Qb7) 21. Qe2 $1 $11 e5 22. dxe5 Nxe5 23. Nc2 $1 Rfe8 24. Kg2 (24. Rhd1 $11) 24... Bc7 (24... Nxd3 $17 25. Qxd3 d4) 25. Bxa6 $2 {[#]} ( 25. Bg3 $15) 25... Rxa6 26. Bxe5 (26. Qxa6 Nxf3 $1 27. Qd3 (27. Bxc7 $2 Qe4 $19 {[%mdl 64] Double Attack}) 27... Nd2 $17) 26... Qxe5 27. Qxa6 {Qd3 is the strong threat.} Nxg4 {[%mdl 64] Hoping for ...Qf5. Double Attack} 28. Qd3 Nh6 ( {But not} 28... Nxe3+ $6 29. Nxe3 Qxe3 30. Qxe3 $16) (28... Nxh2 $2 29. f4 $18) 29. a5 $2 {[#]} (29. f4 $11 Qh5 30. Rhf1) 29... Qg5+ $1 $19 30. Kf1 (30. Kf2 { was worth a try.} Nf5 31. Rae1) 30... Nf5 {[%CAl Rf5e3]} 31. Re1 ({Don't blunder} 31. Qxc3 $2 Nxe3+ 32. Nxe3 Rxe3 $19) 31... Bxa5 32. Qb5 Ra8 $40 { [%mdl 128] aiming for ...Bc7. Black has strong attack.} ({Don't do} 32... Nxe3+ 33. Nxe3 Rxe3 34. Rxe3 $17) 33. Kf2 $2 (33. Rg1 $17 Qh5 34. Rg2) (33. Ra1 Nxe3+ 34. Nxe3 Qxe3 35. Rxa5 Qxf3+ 36. Kg1 Qe3+ 37. Kg2 Re8) 33... Bc7 {Black is clearly winning.} 34. Qxd5 (34. Qd3 $142 Ra2 35. Re2 Qh4+ 36. Kg2 Qg5+ 37. Kf2 Qh4+ 38. Kg2 Qg5+ 39. Kf2) 34... Qh4+ 35. Ke2 Rd8 {Weighted Error Value: White=0.53/Black=0.29} 0-1 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.2"] [White "Sadhwani, Raunak"] [Black "Mohammad Minhaz Uddin"] [Result "1-0"] [ECO "A17"] [WhiteElo "2545"] [BlackElo "2295"] [Annotator "TA"] [PlyCount "89"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,89,17,31,9,13,12,54,48,60,35,57,36,34,28,56,19,34,31,35,7,20,11,13,13, 9,-11,17,19,30,22,67,36,84,75,69,72,116,93,138,68,79,59,72,72,91,110,97,118,99, 118,75,106,80,0,0,0,0,0,37,1,74,74,277,185,172,179,139,179,230,226,316,311,310, 334,445,445,445,441,712,700,682,664]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. e4 Bb7 5. d3 d6 6. g3 {A17: English Opening: 1...Nf6 with ...Bb4.} c5 7. Bg2 e5 8. O-O {White is slightly better.} Nc6 9. a3 {[#]} g6 $146 ({Predecessor:} 9... Be7 10. Rb1 a5 11. Nh4 Nd4 12. Be3 Nd7 13. Bxd4 Bxh4 14. Be3 Be7 15. f4 Bc6 { 1/2-1/2 (47) Losos,J-Sokolik,B Poland 1990}) 10. Rb1 Bg7 11. b4 O-O 12. Ne1 Ne8 13. Nc2 Nc7 14. bxc5 dxc5 15. Ne3 Nd4 16. a4 Bc6 17. Ba3 Nde6 18. Ned5 Re8 19. Qd2 Rb8 20. f4 Bxd5 21. cxd5 Nd4 22. f5 Qd6 23. Qf2 a6 24. Nd1 ({White should play} 24. Ne2 $16) 24... gxf5 $14 25. Ne3 f4 $1 {[%CAl Rf4e3]} 26. Nc4 Qg6 27. gxf4 exf4 28. Kh1 (28. Nd2 Nxd5 $1) 28... Nxd5 29. exd5 Re2 30. Qg1 {[#] Strongly threatening Bxc5!} Qxd3 31. Rbc1 (31. Nxb6 $16 {Threatens to win with Nd7.} Ra2 32. Bxc5) 31... f3 32. Bh3 {Qg3 is the strong threat.} f2 33. Qg4 b5 $6 {[#] And now ...h5 would win.} (33... f5 $5 {[%CAl Rf5g4]} 34. Qf4 Rbe8 $11) 34. axb5 (34. Bxc5 {looks sharper.} Nb3 35. Rcd1 Qxc4 36. Bxf2 Nd2 37. Qxc4 bxc4 38. Bg4) 34... axb5 (34... f5 $11 35. Qh5 Re1) 35. Bxc5 $16 Re4 {A mistake that costs the game.} (35... Nb3 $16 {was necessary.} 36. Rcd1 Qxc4 37. Rxf2 Qxg4 38. Bxg4 Re4) 36. Nb2 Qxf1+ 37. Rxf1 Rxg4 38. Bxg4 Nb3 (38... Rd8 $142 39. d6 (39. Rxf2 Rxd5 40. Bxd4 Rxd4 $18) 39... Nb3) 39. Bxf2 $18 Bxb2 40. Rb1 Bd4 41. Bg3 ({Inferior is} 41. Rxb3 Bxf2 42. d6 Bd4 $15) 41... Nd2 42. Rd1 {White is clearly winning.} ({Less strong is} 42. Bxb8 Nxb1 43. d6 Na3 $11) 42... Rd8 43. Rxd2 Bc3 (43... Rxd5 $142 44. Bf2 Bxf2 45. Rxd5 b4) 44. Rd3 Ba5 45. d6 {Weighted Error Value: White=0.14/Black=0.35} 1-0 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.3"] [White "Ahmed, Sheikh Nasir"] [Black "Mollah Abdullah, Al Rakib"] [Result "0-1"] [ECO "B06"] [WhiteElo "2193"] [BlackElo "2463"] [Annotator "RC"] [PlyCount "116"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "5400+30"] {[%evp 0,116,19,38,83,67,81,86,73,76,82,47,69,31,36,5,30,6,12,11,19,5,61,45,48, 48,38,49,39,46,38,32,32,30,57,49,59,49,82,75,59,49,45,32,63,58,61,46,35,36,32, 10,24,24,34,21,33,28,17,10,1,0,0,0,0,12,0,0,-15,-4,-23,-47,-54,-80,-69,-101, -109,-101,-93,-100,-99,-109,-111,-117,-124,-113,-126,-120,-100,-120,-120,-138, -68,-100,-106,-138,-138,-149,-141,-159,-159,-163,-159,-163,-163,-156,-156,-235, -218,-196,-213,-259,-265,-254,-247,-251,-251,-251,-216]} 1. e4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 3. Nc3 { [%emt 0:00:16]} d6 {[%emt 1:31:30]} 4. Be3 {[%emt 0:06:20]} a6 {[%emt 0:00:00]} 5. Qd2 {[%emt 0:08:49]} b5 {[%emt 0:00:00]} 6. a3 {[%emt 0:01:27]} Nd7 { [%emt 0:00:00]} 7. f4 {[%emt 0:00:54]} e6 {[%emt 0:00:00]} 8. Nf3 {[%emt 0:00: 23]} Bb7 {[%emt 0:00:00]} 9. Bd3 {[%emt 0:10:46]} Ne7 {[%emt 0:00:00]} 10. O-O {[%emt 0:05:06]} d5 {[%emt 0:00:00]} 11. Bf2 {[%emt 0:10:07]} dxe4 {[%emt 0:00: 00]} 12. Bxe4 {[%emt 0:01:26]} Bxe4 {[%emt 0:00:00]} 13. Nxe4 {[%emt 0:00:03]} Nf6 {[%emt 0:00:00]} 14. Nc5 {[%emt 0:51:23]} O-O {[%emt 0:00:00]} 15. a4 { [%emt 0:00:00]} Qd5 {[%emt 0:00:00]} 16. Rfe1 {[%emt 0:01:00]} Ng4 {[%emt 0:00: 00]} 17. c3 {[%emt 0:00:00]} Nf5 {[%emt 0:00:00]} 18. Ne5 {[%emt 0:00:00]} Nxf2 {[%emt 0:00:00]} 19. Qxf2 {[%emt 0:00:00]} Rfd8 {[%emt 0:00:00]} 20. Qf3 { [%emt 0:00:00]} Qxf3 {[%emt 0:00:00]} 21. Nxf3 {[%emt 0:00:00]} Bf8 {[%emt 0: 00:00]} 22. Nd3 {[%emt 0:00:00]} Bd6 {[%emt 0:00:00]} 23. Nfe5 {[%emt 0:00:00]} Ne7 {[%emt 0:00:00]} 24. g3 {[%emt 0:00:00]} b4 {[%emt 0:00:00]} 25. Rec1 { [%emt 0:00:00]} bxc3 {[%emt 0:00:00]} 26. bxc3 {[%emt 0:00:00]} f6 {[%emt 0:01: 57]} 27. Nc4 {[%emt 0:00:00]} Rab8 {[%emt 0:00:52]} 28. Rab1 {[%emt 0:00:00]} Kf7 {[%emt 0:02:25]} 29. Kf2 {[%emt 0:00:13]} Nd5 {[%emt 0:01:17]} 30. Nxd6+ { [%emt 0:01:09]} cxd6 {[%emt 0:00:02]} 31. c4 {[%emt 0:00:38]} Ne7 {[%emt 0:07: 27]} 32. a5 {[%emt 0:03:17]} Nc6 {[%emt 0:00:00]} 33. d5 {[%emt 0:00:31]} Rxb1 {[%emt 0:00:00]} 34. Rxb1 {[%emt 0:00:03]} Nxa5 {[%emt 0:00:00]} 35. dxe6+ { [%emt 0:00:29]} Kxe6 {[%emt 0:00:00]} 36. c5 {[%emt 0:03:40]} Rc8 {[%emt 0:00: 00]} 37. Ra1 {[%emt 0:00:30]} Nb3 {[%emt 0:00:00]} 38. Rxa6 {[%emt 0:00:00]} Nxc5 {[%emt 0:00:04]} 39. Nxc5+ {[%emt 0:00:00]} Rxc5 {[%emt 0:03:56]} 40. Kf3 {[%emt 0:00:27]} Rc2 {[%emt 0:00:00]} 41. h3 {[%emt 0:00:16]} Rc3+ {[%emt 0:00: 00]} 42. Kf2 {[%emt 0:00:35]} h5 {[%emt 0:00:00]} 43. h4 {[%emt 0:00:22]} Kd5 { [%emt 0:00:00]} 44. Rb6 {[%emt 0:01:12]} Rd3 {[%emt 0:00:03]} 45. Rb4 {[%emt 0: 00:36]} Rd4 {[%emt 0:00:17]} 46. Rb8 {[%emt 0:00:12]} Ke4 {[%emt 0:00:12]} 47. Rg8 {[%emt 0:00:08]} Kf5 {[%emt 0:00:19]} 48. Kg2 {[%emt 0:00:12]} Rd2+ { [%emt 0:00:35]} 49. Kf3 {[%emt 0:00:17]} Rd3+ {[%emt 0:00:14]} 50. Kf2 { [%emt 0:00:12]} d5 {[%emt 0:00:10]} 51. Rg7 {[%emt 0:01:10]} d4 {[%emt 0:00:38] } 52. Rg8 {[%emt 0:00:02]} Ra3 {[%emt 0:00:51]} 53. Rd8 {[%emt 0:01:38]} d3 { [%emt 0:02:08]} 54. Rd6 {[%emt 0:00:10]} Rb3 {[%emt 0:00:24]} 55. Kf3 {[%emt 0: 00:50]} d2+ {[%emt 0:00:23]} 56. Kf2 {[%emt 0:00:01]} Kg4 {[%emt 0:00:15]} 57. Rxd2 {[%emt 0:00:02]} Rf3+ {[%emt 0:00:15]} 58. Ke2 {[%emt 0:00:05]} Rxg3 { [%emt 0:01:10]} 0-1 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.4"] [White "Rahman, Ziaur"] [Black "Islam, Khandaker Aminul"] [Result "1-0"] [ECO "A14"] [WhiteElo "2419"] [BlackElo "2174"] [Annotator "TA"] [PlyCount "70"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,70,7,43,30,22,21,31,29,67,22,22,-7,0,-2,-14,-16,-1,-5,13,-26,-22,-20, 0,0,0,-1,91,91,85,0,0,0,-3,-11,0,-27,-7,-82,-87,-95,-101,-101,-89,-83,185,170, 162,173,370,370,298]} 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 c5 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. e3 dxc4 10. bxc4 Nc6 11. Qe2 Nb4 12. d4 {A14: English Opening: 1...e6 with b3 by White.} Rc8 13. Rfd1 cxd4 14. exd4 {White is slightly better.} Re8 15. Rac1 (15. a3 $5 {[%CAl Ra3b4]} Na6 16. Nb5 $14) 15... Bf8 {[#]} 16. Bf1 $146 ({Predecessor:} 16. a3 Nc6 17. Ne5 Qc7 18. Nb5 Qb8 19. c5 Nd5 20. Nd7 Qa8 21. Qg4 Rcd8 22. Nxf8 Rxf8 {1-0 (56) Hickl,J (2530) -Johannessen,L (2519) Germany 2005 CBM 106 [Ribli,Z]}) 16... Ba8 17. Ne5 Qc7 18. Bg2 Bxg2 19. Kxg2 Nd7 20. a3 Nxe5 21. dxe5 Nc6 22. Nb5 Qb7 23. Qf3 a6 ( 23... Red8 $11 {remains equal.}) 24. Nd6 $16 Bxd6 25. Rxd6 (25. exd6 $16 { d7 is the strong threat.} Red8 26. c5) 25... h6 $11 26. Rcd1 {[#] Black must now prevent Rd7.} Rc7 27. Bc3 Qc8 28. Qe3 b5 29. c5 (29. cxb5 $1 $11 axb5 30. Qf3) 29... Ne7 $17 30. Ba5 Rxc5 {Hoping for ...Nf5.} 31. Rd8 Qc6+ 32. Kh3 {[#]} Rxd8 $4 {[%mdl 8192] A mistake that costs the game.} (32... Nf5 $1 $17 { [%CAl Rf5e3] keeps the pressure on.} 33. Rxe8+ Kh7 34. Rxe6 (34. Rd6 $2 Nxd6 35. Bb4 Rxe5 $19) 34... Qxe6) 33. Rxd8+ $18 Kh7 34. Bb4 Rc4 (34... Nd5 35. Qd3+ (35. Qxc5 Nf4+ 36. Kg4 Qe4 $11) 35... g6) 35. Bxe7 Rc3 {Weighted Error Value: White=0.20/Black=0.39} 1-0 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.5"] [White "Jabed Al Azad"] [Black "Adhiban, B...."] [Result "0-1"] [ECO "B72"] [WhiteElo "2002"] [BlackElo "2659"] [Annotator "Shahid"] [PlyCount "72"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,71,50,57,46,50,0,19,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,38,-37,0,-97, -89,-158,-155,-147,-154,-205,-222,-383,-363,-568,-566,-587,-580,-604,-591,-708, -665,-901,-909,-1081,-1099,-1204,-1203,-1176,-1154,-1022,-850,-847,-792,-1218, -1135,-1026,-987,-29999]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 a6 7. f3 {B72: Sicilian Dragon: 6 Be3, lines with h3+Bc4 and sidelines.} h5 8. h4 Bg7 9. Qd2 {The position is equal.} Nbd7 10. a4 b6 11. Bc4 Bb7 {[#]} 12. Nde2 $146 ({Predecessor:} 12. O-O Qc7 13. Bd3 O-O 14. Nce2 e5 15. Nb3 d5 16. exd5 Nxd5 17. Bh6 Nc5 18. Nxc5 Qxc5+ {0-1 (58) Putinceva,M (1457) -Bandurina,S (1863) Moscow 2020}) 12... O-O 13. Bh6 Rc8 {[#] Strongly threatening ...Bxh6.} 14. Bxg7 Kxg7 15. Bb3 Ne5 16. Nd4 Rc5 17. O-O-O Rh8 18. Qe3 (18. Rhe1 $14) 18... b5 19. g4 $2 (19. axb5 $11 axb5 20. Ndxb5) 19... hxg4 $17 {White is on the road to losing.} 20. f4 ({White should play} 20. h5 Nxh5 21. axb5) 20... Nc4 21. Bxc4 bxc4 (21... Rxc4 22. axb5 Qa5 23. Nb3 Rxc3 24. Qxc3 Qxc3 25. bxc3 Bxe4) 22. f5 (22. Rhf1 $17) 22... Re5 $19 {[%CAl Rb7e4]} 23. h5 $2 (23. fxg6 {was necessary.} fxg6 24. Rhf1) 23... gxh5 24. Rhg1 (24. Nde2 $142 Kf8 25. Qg5) (24. Qg5+ Kf8) 24... Bxe4 25. Qg5+ Kf8 26. Rge1 Qa8 27. Nce2 Bf3 28. Nf4 {Threatens to win with Rxe5.} Ne4 29. Nde6+ {[#]} Rxe6 $1 (29... fxe6 $4 30. Ng6+ Kg7 31. Qxe7+ Kh6 32. Nxe5 Qe8 (32... dxe5 33. Rd6) 33. Qh4) 30. Nxe6+ (30. Rxe4 Qxe4) 30... fxe6 31. Qg6 Qe8 32. Qxe6 Nc5 33. Qxc4 Bxd1 34. f6 Qxa4 35. fxe7+ Ke8 36. Qd5 Qxc2# {Weighted Error Value: White=0.56/Black=0. 05} 0-1 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.6"] [White "Kovalev, Vladislav"] [Black "Erigaisi Arjun"] [Result "1/2-1/2"] [ECO "C07"] [WhiteElo "2648"] [BlackElo "2559"] [Annotator "TA"] [PlyCount "60"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,60,18,31,22,34,11,13,15,22,18,16,0,7,7,7,9,6,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. Nxd4 Nc6 6. Bb5 Bd7 7. Nxc6 Bxc6 8. Bxc6+ bxc6 9. c4 Nf6 10. Qa4 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5.} Qc7 11. cxd5 exd5 {The position is equal.} 12. O-O Be7 13. exd5 Nxd5 14. Nc4 O-O 15. Bd2 Bf6 16. Rac1 Nb6 {[#]} 17. Nxb6 $146 ({Predecessor:} 17. Qa5 Qd7 18. b3 Rfe8 19. Be3 Nd5 20. Rfd1 Qg4 21. h3 Qg6 22. Qa6 Bh4 23. Rd4 {1/2-1/2 (54) Glavas,E (1960)-Chazalette,J (2126) ICCF email 2008}) 17... axb6 18. Qxc6 Qxc6 19. Rxc6 Rxa2 20. Rxb6 Rxb2 21. Rxb2 Bxb2 $11 {[%mdl 4096] Endgame KRB-KRB} 22. Be3 Bf6 23. Rd1 Rd8 24. Rxd8+ (24. Rb1 {looks sharper.} Kf8 25. g3 Bd4 26. Bxd4 Rxd4 27. Kg2) 24... Bxd8 {KB-KB} 25. g4 g6 26. Kg2 Bc7 27. h3 f5 28. gxf5 gxf5 29. Kf3 Kf7 30. Bd2 Bd6 {Not much happened in this game. Weighted Error Value: White=0.02/Black=0. 01} 1/2-1/2 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.7"] [White "Dhulipalla Bala Chandra Prasad"] [Black "Reefat, Bin-Sattar"] [Result "0-1"] [ECO "D02"] [WhiteElo "2441"] [BlackElo "2409"] [Annotator "Shahid"] [PlyCount "76"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,76,19,34,37,37,32,32,28,29,31,44,0,14,8,27,31,31,31,21,23,64,63,76, 59,58,40,77,85,70,31,31,37,42,44,75,14,66,52,111,112,246,235,231,2,3,8,2,10, 138,104,325,47,72,55,309,295,307,307,314,276,672,664,677,226,677,676,611]} 1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 4. Bg2 Nb4 5. Na3 e6 6. O-O Nf6 7. c3 {D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Nc6 8. Qb3 Rb8 9. Bg5 {White is slightly better.} Be7 10. Nd2 {[#]} O-O $146 ({Predecessor:} 10... Ng8 11. Bxe7 Ngxe7 12. e4 Bg6 13. Rae1 O-O 14. f4 dxe4 15. Nxe4 b5 16. Qd1 Nd5 {1-0 (117) Badea,B (2535)-Mateuta,G (2475) Bucharest 1997}) 11. Rfe1 ( 11. Bxf6 $5 Bxf6 12. e4 dxe4 13. Nxe4 $14) 11... Ne4 12. Bxe7 Qxe7 (12... Nxe7 {is interesting.} 13. Bxe4 dxe4 14. Qd1 Bg6 15. e3 f5) 13. Nxe4 Bxe4 14. Bxe4 dxe4 15. Rad1 h5 16. Nc2 h4 17. Ne3 Qf6 18. Qb5 Qg6 19. d5 Ne7 {[%CAl Bc6e7, Be7c8,Bc8b6,Bb6c4][%mdl 32]} 20. d6 cxd6 21. Rxd6 hxg3 22. hxg3 Nc8 23. Rdd1 ({ White should play} 23. Rd4 $16) 23... a6 (23... Nb6 $11) 24. Qc5 $14 f5 (24... b5 $1 $14) 25. Ng2 $36 {[%mdl 2048] Rd7 is the strong threat. White is in control.} (25. Qc7 Na7 26. Ng2) 25... Qh6 (25... Qf7 $16 {was called for.}) 26. Rd7 $18 b5 {[#]} 27. Red1 $2 (27. Nf4 $1 $18 Nb6 28. Re7) 27... Nb6 $11 28. R7d6 Nc4 29. Rxa6 Rfd8 (29... Nxb2 $11 30. Rb1 Na4) 30. Rb1 Rd2 $2 (30... g5 $16 {was worth a try.}) 31. Qe7 $2 (31. Nf4 $18 Rbd8 32. Kg2 (32. Nxe6 $2 Rd1+ 33. Rxd1 Rxd1+ 34. Kg2 Qh1#)) 31... Rbd8 $1 $14 {[#] Hoping for ...Rd1+.} 32. Nh4 ({But not} 32. Qxe6+ Qxe6 33. Rxe6 Rxe2 $11) 32... R2d6 {[%mdl 8192]} ( 32... Qf6 $14 33. Rxe6 Qf7) 33. Rxd6 $18 Rxd6 34. b3 Nd2 35. Re1 ({Not} 35. Qxd6 Nxb1 36. c4 bxc4 $16) 35... e3 $2 (35... Rd5 36. Ng2 Qf6 37. Qe8+ Kh7) 36. f3 (36. Qxd6 $2 {is the wrong capture.} exf2+ 37. Kxf2 Ne4+ 38. Kg2 Nxd6 $19) 36... Rd5 37. Qe8+ Kh7 {intending ...f4.} 38. Kg2 {Strongly threatening Rh1.} f4 {[%mdl 32768] Weighted Error Value: White=0.35/Black=0.67. Loss on time!?} 0-1 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.8"] [White "Mehdi Hasan Parag"] [Black "Masum, Hossain"] [Result "1-0"] [ECO "B84"] [WhiteElo "2204"] [BlackElo "2054"] [Annotator "TA"] [PlyCount "45"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,45,-17,-6,-33,-17,-29,37,43,116,88,54,54,479,480,473,480,844,838,827, 826,818,788,788,788,808,716,700,708,808,808]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. Be3 Nbd7 8. O-O {8.0-0 has become a bit dusty these days.} b5 9. a3 Bb7 10. Bd3 {B84: Sicilian Scheveningen: 6 Be2 a6, lines without early Be3.} Rc8 11. f4 Rxc3 12. bxc3 $14 {White is slightly better.} Nxe4 {[#]} ({Better is} 12... Be7 $14) 13. f5 $146 {Black must now prevent Bxe4.} ({Predecessor:} 13. Bxe4 Bxe4 14. Nf3 Qc7 15. Qd2 Be7 16. a4 Bf6 17. Bd4 bxa4 18. Bxf6 gxf6 19. Rxa4 {1-0 (32) Dantas,R (1646)-Pinto,R (2063) Natal 2014 }) 13... e5 {[#]} 14. Ne6 {[%CAl Re6d8][%mdl 64] Promotion} fxe6 {[%mdl 8192] A mistake that costs the game.} (14... Qb8 $1 $14) 15. Qh5+ $18 {White is clearly winning.} g6 16. fxg6 Ndf6 (16... Nef6 $142 17. g7+ {[%mdl 64] Discovered Attack} Nxh5 18. gxh8=Q Nf4 19. Bxf4 exf4 20. Rxf4 Qg5) 17. g7+ { [%mdl 64] Double Attack, Discovered Attack} Nxh5 18. gxh8=Q Qe7 19. Bxe4 Bxe4 20. Bh6 Nf4 21. Qxf8+ Qxf8 22. Bxf8 Kxf8 23. g3 {[%mdl 64] Pin. Weighted Error Value: White=0.10/Black=0.92} 1-0 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.9"] [White "Zia, Tahsin Tajwar"] [Black "Nayem, Haque"] [Result "0-1"] [ECO "A07"] [WhiteElo "2092"] [BlackElo "2040"] [Annotator "TA"] [PlyCount "80"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,80,-30,-38,-12,-9,-7,-21,19,0,23,23,33,17,68,10,36,0,37,2,40,-22,0, -13,42,-25,-10,-36,-26,-90,-84,-95,-97,-116,-106,-113,-105,-236,-247,-684,-691, -804,-772,-1006,-1058,-1006,-976,-1218,-1326,-1059,-836,-836,-836,-800,-800, -800,-792,-738,-604,-370,-348,-29990,-29991,-29991,-29989,-29989,-29990,-29991, -29985,-29997,-29998]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. Nc3 O-O 7. e4 dxe4 {A07: Réti Opening: New York and Capablanca Systems.} 8. Nxe4 Nbc6 9. Re1 {[#]} Nf5 $146 {The position is equal.} (9... f5 $5 {[%CAl Rf5e4]} 10. Nc3 Qd6 $11) ({Predecessor:} 9... a5 10. a4 b6 11. Bg5 f6 12. Bd2 Ba6 13. Nc3 Qd7 14. Nb5 Rad8 {0-1 (36) Krstic,U (2436)-Bayer,B (2451) Austria 2014}) 10. c3 Rb8 11. b4 b6 12. h4 Ba6 (12... Nd6 $11) 13. Qa4 (13. Bg5 $14 Qxd3 14. Nf6+ Kh8 15. Nd7) 13... Bb7 $11 14. Qb3 Kh8 15. h5 h6 $6 ({Don't blunder} 15... Qxd3 $2 16. h6 $18) (15... gxh5) 16. g4 (16. hxg6 $14 fxg6 17. b5 Na5 18. Qc2) 16... Nd6 $1 17. g5 {Black must now prevent hxg6.} Nxe4 (17... gxh5 $11 18. gxh6 Bf6) 18. dxe4 ({White should try} 18. gxh6 $14 Bf6 19. hxg6 (19. dxe4 gxh5 20. Kh2 Bc8 $11) 19... fxg6 20. dxe4 (20. Rxe4 Qxd3 21. Ne1 Qd7 $17)) 18... gxh5 19. Rd1 Qe8 20. gxh6 (20. Nh4 $11) 20... Bf6 $17 21. Be3 Rg8 22. Kh2 Bc8 23. Rg1 Bg4 24. Nd2 {This costs White the game.} (24. Qc4 $17 {was necessary.}) 24... Qe7 $19 {Hoping for ...Bg5.} 25. Qc4 $2 {[#]} (25. Nf3 Bh4 26. Qd5) 25... Bg5 $1 {( -> ...Bf4+)} 26. Qf1 (26. Bh3 Bxe3) 26... Rbd8 {Threatens to win with ... Bxe3.} 27. Nf3 Bf4+ 28. Bxf4 exf4 29. b5 Bxf3 30. Bxf3 Ne5 31. Qh3 Nxf3+ {[%mdl 64] [#] Discovered Attack, Overworked Piece} 32. Qxf3 Qh4+ 33. Qh3 Qxf2+ 34. Kh1 Rg4 35. Rxg4 hxg4 {KQR-KQR} 36. Qh5 (36. Qxg4 $19 Rg8 37. Qh3) 36... Qf3+ {[%mdl 64] Double Attack. Black mates.} 37. Kg1 Qe3+ 38. Kf1 Qxc3 39. Re1 Rd3 40. Re2 Rd1+ {Weighted Error Value: White=0.65/Black=0.19} 0-1 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.10"] [White "Sumit, Kumar"] [Black "Mitrabha, Guha"] [Result "0-1"] [ECO "C08"] [WhiteElo "2196"] [BlackElo "2445"] [Annotator "Shahid"] [PlyCount "52"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,52,0,4,15,15,0,16,0,-6,-13,-7,-16,0,0,0,-2,-8,-68,-72,-87,-91,-159, -104,-94,-86,-93,-79,-94,-82,-86,-67,-377,-383,-378,-377,-352,-334]} 1. e4 e6 2. d4 d5 3. Nd2 a6 4. Ngf3 c5 5. c3 Nc6 6. exd5 exd5 7. dxc5 Bxc5 8. Bd3 Nf6 9. O-O O-O 10. Nb3 {C08: French Tarrasch: 3...c5 4 exd5 exd5 sidelines.} Bb6 11. h3 h6 12. Bf4 {The position is equal.} Ne4 13. Nbd4 Re8 {[#]} 14. Re1 $146 ({ Predecessor:} 14. Qc2 Qf6 15. Be3 Bc7 16. Rae1 Nc5 17. Bh7+ Kh8 18. Nxc6 bxc6 19. Bxc5 Rxe1 20. Rxe1 g6 21. Bd4 {1-0 (21) Nadal Fajardo,R (2015)-Lozano Ruiz, D (1835) Barcelona 2017}) 14... Qf6 15. Be3 Bc7 16. Nxc6 bxc6 17. Bd4 $2 (17. c4 $11) 17... Qg6 $15 18. Kh1 (18. Re3 a5 (18... Bxh3 $2 19. Nh4)) 18... Bf5 19. Bf1 (19. Bxe4 $142 Bxe4 20. b4) 19... Qd6 (19... a5 $142 20. a3 a4) 20. b4 $17 Bg6 21. g3 Re6 {[#] aiming for ...Nxg3+!} 22. Kg1 Rae8 23. Bg2 Bh5 24. Qd3 $2 {[%mdl 8192]} (24. Rc1) (24. g4 $2 Bg6) 24... Bxf3 $19 {Black is winning.} 25. Bxf3 {[#]} (25. Qxf3 Ng5) 25... Nxg3 {[%mdl 64] Discovered Attack} 26. Rxe6 Rxe6 {Weighted Error Value: White=0.46/Black=0.06} 0-1 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.11"] [White "Koustav Chatterjee"] [Black "Kaustuv, Kundu"] [Result "1-0"] [ECO "B01"] [WhiteElo "2431"] [BlackElo "2301"] [Annotator "TA"] [PlyCount "61"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,61,61,58,57,66,91,79,85,71,137,120,158,162,158,141,285,273,256,205, 209,208,329,332,333,324,378,351,290,372,419,406,419,273,270,270,245,270,258, 279,251,149,147,142,139,147,130,122,1134,1129]} 1. e4 d5 2. exd5 Qxd5 3. Nf3 Nf6 4. Be2 g6 5. c4 Qd8 6. d4 Bg7 7. O-O O-O 8. Nc3 b6 {B01: Scandinavian Defence.} (8... Bg4) 9. Ne5 Bb7 10. Bf3 Qc8 {White is better.} 11. Re1 {[#]} Rd8 $146 (11... e6 $142) ({Predecessor:} 11... e6 12. Bg5 Nfd7 13. Qe2 Nxe5 14. dxe5 Nd7 15. Bf4 a5 16. h4 Nc5 17. h5 Bxf3 18. Qxf3 {1-0 (29) Horvath,A (2528) -Hauser,R (2094) Davos 2004}) 12. Bg5 $16 c6 13. Qd2 Nbd7 14. Qf4 Re8 (14... c5 $16) 15. Bg4 $18 {Bxd7 is the strong threat.} e6 16. Ne4 Nxe5 17. Bxf6 Nd3 ( 17... Nxg4 $142 18. Bxg7 (18. Qxg4 Qc7 $16) 18... f5) 18. Qg3 $1 Nxe1 19. Bxg7 $1 f5 ({Worse is} 19... Kxg7 20. Qe5+ Kf8 21. Rxe1 $16) 20. Rxe1 {Hoping for Be5.} fxe4 ({Reject} 20... Kxg7 21. Qe5+ Kg8 22. Bxf5) 21. Be5 Qd7 22. h4 c5 23. d5 {Threatens to win with Bc3.} Qf7 24. d6 ({Less strong is} 24. dxe6 Rxe6 25. Bxe6 Qxe6 $16) 24... Rad8 25. h5 $1 h6 26. hxg6 Qxg6 {[#]} 27. Re3 (27. Qh3 $1 $18 Kh7 28. Bh5) 27... Kh7 $16 28. Qh4 $40 {[%mdl 128] Strongly threatening Bh5! White wants a kill.} Qg5 29. Qxg5 hxg5 30. Bh5 {White wants to mate with Rh3.} Rf8 $2 {[%mdl 8192] [#]} (30... Rg8 $16 31. Bf7 $18) 31. Rh3 $1 {[%CAl Rh5f7] Weighted Error Value: White=0.11/Black=0.23} 1-0 [Event "BAN-chT SAIF POWERTEC 2020"] [Site "Dhaka"] [Date "2021.03.25"] [Round "7.12"] [White "Sultana, Sharmin Shirin"] [Black "Manon, Reja Neer"] [Result "1/2-1/2"] [ECO "D04"] [WhiteElo "2002"] [BlackElo "2143"] [Annotator "TA"] [PlyCount "54"] [EventDate "2021.03.19"] [EventType "team-tourn"] [EventCountry "BAN"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,54,17,0,3,0,0,0,0,0,14,0,0,-14,-15,-16,-15,-14,-20,-32,26,23,35,19, 27,25,26,36,37,12,0,-47,45,52,63,44,78,42,56,54,64,0,0]} 1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Be2 O-O 5. O-O d5 6. b3 c5 7. Bb2 Ne4 8. Nbd2 Nc6 {D04: Colle System. } 9. c3 Bf5 {[#]} 10. Nh4 $146 ({Predecessor:} 10. Nxe4 dxe4 11. Nd2 cxd4 12. cxd4 e5 13. d5 Qxd5 14. g4 Rfd8 15. Bc3 Be6 16. Qc2 {0-1 (37) Kovacic,P (2167) -Jankovic,A (2559) Gostovanja 2010}) 10... Be6 11. Nhf3 f5 12. Nxe4 fxe4 13. Ng5 Bf5 {Hoping for ...e5.} 14. Bg4 Qd7 15. Bxf5 Qxf5 16. Nh3 e5 (16... cxd4 $15 17. cxd4 Bh6) 17. dxc5 $11 Rad8 18. Qe2 d4 19. Qc4+ Kh8 20. cxd4 exd4 21. Nf4 {aiming for Ne6.} Rfe8 22. Qa4 Be5 (22... Qxc5 $15 23. Rac1 Qf5) 23. Ne2 $1 $14 {[%CAl Re2d4]} d3 24. Ng3 Qe6 25. Qa3 Bxb2 26. Qxb2+ Qe5 27. Qd2 ({White should try} 27. Qxe5+ $14 Rxe5 28. Rfc1) 27... Qxc5 {Weighted Error Value: White=0.11/Black=0.17} 1/2-1/2