[Event "DSB-Frauenkader-Challenge 2021"] [White "Muetsch,Annmarie"] [Black "Sieber,Fiona"] [Site "Magdeburg"] [Round "5.1"] [Annotator "TA"] [Result "0-1"] [Date "2021.04.09"] [WhiteElo "2266"] [BlackElo "2275"] [PlyCount "180"] 1. e4 {} c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 Nxb5 5. Nxb5 d6 6. d4 Nf6 {B23: Closed Sicilian: Lines without g3.} 7. Nc3 cxd4 8. Qxd4 e5 {The position is equal.} 9. Qd3 h6 10. 0-0 Be6 11. Rd1 a6 12. a4 Be7 13. b3 Rc8 14. Bb2 0-0 {[#]} 15. Nd2 $146 ({Predecessor:} 15. Qe3 Qa5 16. Rd3 Rc6 17. Rad1 Rb8 18. Ne1 b5 19. Nd5 Bxd5 20. exd5 {1-0 (19) Schmidt,J (2172)-Ganiev,I (2331) ICCF email 2013} )Nh5 16. Nd5 (16. g3 $11 {keeps the balance.} )Bxd5 $17 17. Qxd5 Nf4 ({Black should try} 17... Rxc2 $17 18. Nc4 Nf4 19. Qxb7 Bh4 20. Bxe5 { Double Attack} Nh3+ 21. gxh3 Bxf2+ 22. Kh1 Qh4 )18. Qxb7 $15 {Black must now prevent Nc4.} Rxc2 19. Nc4 {} (19. Ba3 $1 $11 )Bh4 $19 20. Bxe5 {[#]} Qg5 ({But not} 20... Bxf2+ 21. Kh1 $17 )({Better is} 20... Nh3+ $1 $19 {} 21. gxh3 Bxf2+ 22. Kh1 Qh4 )21. Bxf4 $15 Qxf4 22. Rf1 { Strongly threatening g3.} Bxf2+ 23. Kh1 Qg5 $40 { Hoping for ...Bd4! Black is up to no good.} (23... Rc3 $5 {} 24. Qd7 Qh4 $15 )24. Na3 (24. Qd5 $1 $11 Qxd5 25. exd5 )Re2 $1 $17 {...Bd4! is the strong threat.} 25. Qd5 ({Not} 25. Qxa6 $2 Qg4 )Qg4 (25... Bc5 $17 {} 26. Qxg5 hxg5 )26. Qf5 (26. h3 $1 $15 Qg3 27. Qc4 )Qxf5 27. exf5 Rb8 28. Rab1 d5 29. b4 (29. Rfc1 $17 )Ra2 $19 30. Rb3 {[#]} Bc5 $1 { } 31. Rfb1 Rxb4 { Deflection} 32. Rxb4 Bxb4 33. Rxb4 Rxa3 { Endgame KR-KR} 34. h3 Kf8 35. Rd4 Ke7 36. Rxd5 Rxa4 37. Kh2 Rc4 (37... a5 $19 {aiming for ...Ra1.} 38. Rd1 Ra2 )38. Kg3 $17 Rc6 39. Kf4 Rd6 40. Ra5 Kd7 41. g4 Kc7 42. Ra1 Kb7 (42... f6 $17 43. Ke4 Kb7 )43. Ke5 $15 Rb6 (43... Rd8 {looks sharper.} 44. h4 Kb6 45. Rb1+ Kc6 46. Rc1+ Kd7 )44. Ra3 Kc7 45. Kd5 Rb5+ 46. Kc4 Kb6 47. Re3 Rc5+ 48. Kd4 a5 49. Re8 (49. Rb3+ $17 { is a better defense.} Rb5 50. Rd3 )Rc7 (49... a4 $1 $19 {is more deadly.} 50. Rb8+ Ka7 )50. Rb8+ (50. f6 $17 {was the only defense.} g5 51. Rb8+ Rb7 52. Re8 )Rb7 $19 51. Ra8 {[#]} (51. Re8 $17 )Ra7 $1 {} 52. Rb8+ Kc6 53. Rc8+ Kd6 54. Rc3 a4 55. Ra3 Ra5 56. Kc4 Ke5 57. Kb4 Ra7 58. Kc5 Ra8 59. Kb6 $2 (59. Kc6 )Rb8+ 60. Kc5 $2 (60. Kc7 Rb4 61. Kc6 )Rc8+ $2 (60... Rb3 61. Rxa4 Rxh3 )61. Kb5 Rb8+ $2 {} (61... h5 $17 62. Rxa4 Rc3 )62. Kc5 $1 {Black converts the advantage convincingly.} Rb3 63. Rxa4 Rc3+ 64. Kb6 Rxh3 65. Kc6 Rd3 66. Ra7 Kf6 67. Kc5 Rg3 68. Ra6+ Ke5 69. Ra4 Rc3+ 70. Kb6 Kf6 71. Kb5 Rc7 72. Kb6 Re7 73. Kc6 h5 74. gxh5 Kxf5 75. Kd6 Re6+ 76. Kd7 (76. Kd5 $142 Kg5 77. Ra7 )Kg5 77. Ra5+ Kg4 78. Rb5 Re1 79. Kd6 f5 80. Rb7 Kxh5 81. Rxg7 f4 82. Kd5 f3 83. Rf7 Kg4 84. Kd4 Kg3 85. Rg7+ {[#]} Kh3 $2 (85... Kf2 $1 {mates} 86. Rg8 Ke2 87. Re8+ Kf1 88. Rg8 f2 89. Kd3 Re5 90. Kd4 Re2 91. Ra8 Re6 92. Kd3 Re5 93. Kd4 Rg5 94. Rc8 Kg1 95. Rf8 f1=Q 96. Rxf1+ Kxf1 97. Ke4 Ke2 98. Kf4 Rd5 99. Ke4 Rh5 100. Kf4 Kd3 101. Kg4 Rb5 102. Kf4 Ra5 103. Kg3 Ke3 104. Kg4 Re5 105. Kg3 Re4 106. Kg2 Rg4+ 107. Kh3 Kf3 108. Kh2 Rh4+ 109. Kg1 Rh7 110. Kf1 Rh1# )86. Rh7+ $2 {} (86. Rf7 $11 )Kg2 { Black mates.} 87. Rg7+ Kf1 88. Kd3 f2 89. Kd2 Re2+ 90. Kd1 Re5 {Weighted Error Value: White=0.42/Black=0.26} 0-1