[Event "Hasselbacken Open 2021"] [Site "Stockholm"] [Date "2021.11.05"] [Round "4.3"] [White "Trost, Edvin"] [Black "Lindberg, Bengt"] [Result "1-0"] [ECO "E15"] [WhiteElo "2274"] [BlackElo "2378"] [Annotator "TA"] [PlyCount "214"] [EventDate "2021.11.05"] [EventType "swiss"] [EventCountry "SWE"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,214,9,45,36,47,49,37,49,40,40,52,41,54,36,43,37,34,30,37,18,31,13,21, 0,0,-2,14,0,0,-34,-35,-45,-33,-129,-91,-120,-121,-182,-139,-125,-39,-108,-114, -93,-93,-180,-180,-192,0,-119,-129,-128,-141,-114,0,0,0,0,0,-60,42,46,62,18,57, 54,53,81,125,118,213,206,679,125,193,45,319,276,288,29,22,14,14,14,14,14,14,14, 14,14,15,15,15,14,14,14,14,14,15,15,15,15,406,15,29,29,97,99,133,110,137,15, 289,29,288,281,206,40,273,173,219,90,82,18,320,132,132,132,692,687,694,683,649, 613,603,521,493,501,465,132,132,132,456,123,132,124,124,123,132,108,132,108, 108,108,108,108,6506,29961,29967,29968,29968,29969,29969,29970,29970,29971, 29970,29971,29976,29977,29977,29969,29969,29970,29972,29973,29973,29970,29974, 29967,29975,29974,29974,29971,29971,29972,29972,29973,29975,29976,29976,29977, 29977,29978,29978,29977,29976,29975,29977,29973,29972,29972,29974,29975,29975, 29975,29966]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qc2 Bb4+ 6. Bd2 { E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations.} Be7 7. e4 d5 8. cxd5 {White is slightly better.} Bxf1 $1 9. Kxf1 exd5 10. e5 Ne4 11. Kg2 Qd7 12. Nc3 {[%cal Bb1c3,Bc3e2,Be2f4][%mdl 32]} Nxd2 13. Qxd2 Nc6 { [%cal Bb8c6,Bc6d8,Bd8e6][%mdl 32]} 14. Rac1 Nd8 15. Ne2 Ne6 16. Nf4 O-O 17. h4 {[#]} h6 $146 ({Predecessor:} 17... c5 18. dxc5 Nxf4+ 19. Qxf4 bxc5 20. b4 cxb4 21. Nd4 Rfc8 22. Nf5 Bf8 23. Rxc8 Rxc8 {0-1 (62) Perdomo,L (2428)-Delgado Ramirez,N (2605) Brasilia 2015}) 18. Nh2 c5 19. dxc5 Nxf4+ 20. Qxf4 bxc5 21. Ng4 (21. Rhd1 $15) 21... d4 22. Qf3 Qe6 23. h5 (23. b3 $17 {was worth a try.}) 23... Rab8 (23... Qxa2 24. Nf6+ gxf6 25. exf6 $17) 24. b3 Rfd8 (24... Rb4 $17 25. Nh2 a5) 25. Rhd1 (25. Rc4 $1 $15) 25... a5 26. Rc4 Rb4 27. Rdc1 (27. Rxb4 $17 axb4 28. Rd3) 27... Bg5 $1 $19 {[%cal Rg5c1]} 28. Rxb4 cxb4 (28... Bxc1 29. Rb5 $11) ({Better is} 28... axb4 $19 29. Rxc5 d3) 29. Rd1 (29. Rc6 $11 Qe7 30. Qe4) 29... d3 $1 $17 30. Nh2 d2 (30... Qxe5 $6 31. Rxd3 Rxd3 32. Qxd3 $11) 31. Qe4 Qc8 (31... a4 $1 $17 {[%cal Ra4b3]} 32. bxa4 Qxa2 33. Qxb4 Qc2) 32. f4 Be7 33. Nf3 Qc3 34. Qe2 ({White should try} 34. e6 $11 f5 35. Qb7 (35. Qxf5 Qc1 $11 )) 34... a4 (34... Rd3 $15) 35. bxa4 $14 {[%cal Rd1d2]} Rd3 36. e6 f6 ({ Much worse is} 36... Re3 $6 37. exf7+ Kxf7 38. Qxd2 $16) 37. a5 $1 ({Avoid the trap} 37. Nxd2 $2 Rxg3+ 38. Kf1 Qd4 $19) 37... Re3 38. Qf2 Bc5 39. Rxd2 { Hoping for Rd8+.} Rxe6 (39... Qc4 $16 {was called for.}) 40. Qf1 $1 $18 Be3 $2 (40... Bf8 41. Qb5 Qc5 42. Qxc5 Bxc5) 41. Re2 $2 (41. Rd8+ $18 Kf7 42. Ne5+ $1 {[%mdl 512]} Rxe5 43. fxe5) 41... Rd6 (41... Qd3 $16) 42. a6 (42. Nh4 $18) 42... Kf7 $2 {[%mdl 8192]} (42... Rxa6 $14 43. Rxe3 Rxa2+ 44. Re2 b3) 43. Qb1 Qd3 44. Qxd3 (44. Qe1 $18 Rxa6 45. Rxe3 Rxa2+ 46. Kh3 Qd7+ 47. g4) 44... Rxd3 { [%mdl 4096] Endgame KRB-KRN} 45. Rb2 Ra3 46. Rxb4 {Rb7+ is the strong threat.} Rxa2+ 47. Kh3 {Threatens to win with Nh4.} Rxa6 48. Rb7+ Kg8 49. Nh4 Rb6 50. Rd7 {And now Nf5 would win.} Bc5 51. Nf5 Bf8 52. Rd8 Kf7 53. Kg4 Ra6 54. Rd7+ Kg8 55. Rb7 Rc6 $2 {[%mdl 8192] [#]} (55... Ra4 $11) 56. Nh4 $2 (56. Rxg7+ $1 $18 {[%mdl 512]} Bxg7 (56... Kh8 57. Rd7) 57. Ne7+ {[%mdl 64] Double Attack} Kf7 58. Nxc6) 56... Rc5 57. Ng6 {aiming for Rb8!} Bd6 (57... Rc8 $1 $11) 58. Rd7 $16 Rc6 59. Kf5 Ba3 60. g4 ({White should play} 60. Rd8+ $16 Kf7 61. Nh8+ Ke7 62. Rg8) 60... Bb4 $2 {[%mdl 8192]} (60... Rc5+ $11 {and Black stays safe.} 61. Ke6 Rc6+ 62. Kd5 Rc5+ 63. Kd4 Ra5) 61. Rb7 $2 (61. Rd8+ $1 $18 Kf7 62. Nh8+ Ke7 63. Rg8) 61... Ba3 $2 {[%mdl 8192]} (61... Bd6 $1 $11 {and Black has nothing to worry.}) 62. Rb8+ $1 $18 Kf7 63. Ra8 $2 ({Only move:} 63. Nh8+ $1 $18 Ke7 64. Rg8) 63... Bb4 $2 (63... Rc5+ $14 64. Ke4 Rc3) 64. Nh8+ $1 Ke7 65. Ra7+ (65. Rg8 $18 {is more deadly.}) 65... Kf8 $16 66. Kg6 (66. Ng6+ $16 Kg8 67. Ra8+ Kf7 68. Nh8+ Ke7 69. Kg6) 66... f5+ $2 {[%mdl 8192]} (66... Kg8 $1 $11 {and Black is okay.}) 67. Kxf5 (67. Kh7 $1 $18 {and the rest is easy. Black must now prevent Ng6+.} Ke8 68. Ng6) 67... Rf6+ 68. Ke4 Bd6 $2 {[%mdl 8192]} ( 68... Kg8 $16) 69. Ng6+ $18 Kg8 70. Ra8+ Kf7 71. Kd5 Bb4 72. Rb8 Ba3 73. Rb7+ Kg8 74. Ke4 $2 (74. Ra7 $18 Rd6+ 75. Ke5) 74... Re6+ $16 75. Kf3 Rf6 $2 { [%mdl 8192]} (75... Re8 $16 {is more resistant.} 76. g5 Ra8 77. gxh6 gxh6) 76. Nh4 $2 (76. Rb8+ $18 {and White stays clearly on top.} Kf7 77. Ne5+ Ke6 78. Ke4 ) 76... Bc5 77. Nf5 Bf8 78. Rd7 Ra6 79. Nh4 Rd6 80. Rxd6 Bxd6 {KB-KN} 81. Ke4 Kf7 82. Kf5 Ba3 $2 {[%mdl 8192]} (82... Bc5 $16 83. Nf3 Be3) 83. Ng6 $18 Bc1 { White mates.} 84. Ne5+ Kg8 85. Nd3 $1 {[%cal Rd3c1]} Bd2 {[#]} 86. Kg6 $1 Be3 { [#]} 87. f5 $1 Bd4 88. Nf4 Ba1 89. Nd5 Bb2 90. Ne7+ Kf8 91. Nc8 Be5 92. Nb6 Kg8 93. Nc4 Bf4 94. Na5 Be3 95. Nc6 Bg5 96. Nd4 Bf6 97. Ne6 Be5 98. Nc5 Bf4 99. Nd7 Bd2 100. f6 gxf6 101. Nxf6+ Kh8 102. Nd5 Bg5 103. Nb6 Kg8 104. Nc4 Bf4 105. Nb2 Kf8 106. Nd3 Be3 107. Ne5 Bd4 {A wild game.  Weighted Error Value: White=0.51/ Black=0.55} 1-0