CohenChessClub.com

[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/okUm1sO7"] [Date "2024.02.29"] [White "Sasha"] [Black "WO1000"] [Result "0-1"] [UTCDate "2024.02.29"] [UTCTime "00:04:54"] [WhiteElo "1592"] [BlackElo "1621"] [WhiteRatingDiff "-6"] [BlackRatingDiff "+17"] [WhiteTitle "IM🧁"] [BlackTitle "GM👑"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A40"] [Opening "Horwitz Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. d4 e6 { A40 Horwitz Defense } 2. Nf3 d5 3. Bf4 c5 4. e3 c4?! { (0.18 → 0.86) Inaccuracy. Nf6 was best. } (4... Nf6 5. Nbd2 Nc6 6. c3 Nh5 7. Bg5 Qb6 8. Bh4 Qxb2 9. Rb1 Qxc3 10. Bb5 Bd7 11. Bxc6) 5. c3 Nc6 6. b3 cxb3 7. Qxb3 Bd6 8. Bxd6 Qxd6 9. Be2 Nf6 10. O-O O-O 11. Re1 a5 12. Nbd2 a4 13. Qc2 Ng4? { (0.72 → 2.09) Mistake. e5 was best. } (13... e5) 14. h3 Nf6 15. Bd3?! { (1.87 → 1.07) Inaccuracy. e4 was best. } (15. e4 Nxe4 16. Nxe4 dxe4 17. Qxe4 Ra5 18. Rab1 Qc7 19. Bd3 g6 20. Qe3 b6 21. c4 Rd8) 15... Ne4?? { (1.07 → 4.27) Blunder. h6 was best. } (15... h6) 16. Bxe4 dxe4 17. Nxe4 Qe7 18. Nc5 b5?! { (3.88 → 5.29) Inaccuracy. b6 was best. } (18... b6 19. Nxa4) 19. c4?! { (5.29 → 3.74) Inaccuracy. Rab1 was best. } (19. Rab1 Ra5) 19... bxc4 20. Qxc4?! { (3.53 → 2.77) Inaccuracy. Rab1 was best. } (20. Rab1 Bd7 21. Ng5 Qxg5 22. Nxd7 Rfd8 23. Nb6 Ra7 24. Qxc4 Ne7 25. Rb5 Nf5 26. Rc5 h5) 20... Bb7?! { (2.77 → 3.96) Inaccuracy. Bd7 was best. } (20... Bd7) 21. Nxa4? { (3.96 → 2.35) Mistake. Rec1 was best. } (21. Rec1) 21... Nb4?! { (2.35 → 3.47) Inaccuracy. Qb4 was best. } (21... Qb4 22. Qxb4 Nxb4 23. Nb6 Bxf3 24. Nxa8 Bxa8 25. Rec1 Bd5 26. a4 Ra8 27. a5 Na6 28. f3) 22. Qb5?? { (3.47 → -1.37) Blunder. Nc5 was best. } (22. Nc5) 22... Bc6 23. Qc5 Qxc5?! { (-1.04 → -0.32) Inaccuracy. Qb7 was best. } (23... Qb7 24. Ne5 Rxa4 25. a3 f6 26. axb4 fxe5 27. Rxa4 Bxa4 28. Qxe5 Qd5 29. Qxd5 exd5 30. Ra1) 24. Nxc5 Nc2 25. Rec1?! { (-0.34 → -0.90) Inaccuracy. a4 was best. } (25. a4) 25... Nxa1 26. Rxa1 f5?? { (-0.56 → 1.39) Blunder. Ra3 was best. } (26... Ra3 27. Rc1) 27. a4?! { (1.39 → 0.81) Inaccuracy. Ne5 was best. } (27. Ne5) 27... h6?? { (0.81 → 3.22) Blunder. Bxf3 was best. } (27... Bxf3 28. gxf3 Kf7 29. a5 Rfb8 30. a6 Rb5 31. f4 Rb6 32. h4 Kg6 33. Kg2 Ra7 34. Kf3) 28. Nxe6 Rf7?! { (3.16 → 4.15) Inaccuracy. Rf6 was best. } (28... Rf6 29. Nc5 Bxf3 30. gxf3 f4 31. e4 Rg6+ 32. Kf1 Rb6 33. a5 Rb4 34. Ne6 Ra6 35. d5) 29. Nc5? { (4.15 → 2.07) Mistake. Ne5 was best. } (29. Ne5 Re7 30. Nxc6 Rxe6 31. d5 Rd6 32. a5 Kf7 33. Rd1 h5 34. Kf1 Ke8 35. Ke2 Kd7) 29... g5?? { (2.07 → 5.12) Blunder. Rfa7 was best. } (29... Rfa7 30. Rb1) 30. Ne5 Rc7 31. Ne6?! { (5.48 → 4.15) Inaccuracy. a5 was best. } (31. a5 Bb5 32. a6 Rca7 33. Ra5 Be8 34. g4 fxg4 35. hxg4 Rb8 36. Ra1 Kg7 37. Kg2 Rb6) 31... Re7 32. Nxc6 Rxe6 33. Ne5?? { (4.19 → 0.52) Blunder. d5 was best. } (33. d5 Rd6 34. a5 Kf7 35. Rd1 h5 36. Kf1 Ke8 37. Ke2 Kd7 38. Rd4 Rf6 39. Rb4 Kd6) 33... Ra5?? { (0.52 → 2.88) Blunder. Rea6 was best. } (33... Rea6) 34. Nc4 Raa6 35. a5 f4 36. exf4?? { (3.46 → 1.17) Blunder. Kf1 was best. } (36. Kf1 fxe3 37. fxe3 g4 38. Ke2 gxh3 39. gxh3 Rg6 40. Rb1 Ra8 41. Rb6 Rg1 42. Rxh6 Rc8) 36... gxf4 37. Nd2 Re2?! { (0.81 → 1.65) Inaccuracy. Reb6 was best. } (37... Reb6 38. Ra3) 38. Nb3 f3 39. gxf3 Rg6+ 40. Kf1 Rb2?? { (2.12 → 5.55) Blunder. Re8 was best. } (40... Re8 41. Ra4 Rf6 42. Nc5 Rxf3 43. Kg2 Ref8 44. Ra2 R3f6 45. a6 Rg6+ 46. Kf1 Rd6 47. Ra4) 41. Nc5?? { (5.55 → 2.23) Blunder. a6 was best. } (41. a6 Kf7 42. a7 Rg8 43. a8=Q Rxa8 44. Rxa8 Rxb3 45. Ke2 Rb4 46. Ke3 Rb1 47. Ra6 Kg7) 41... Rb8? { (2.23 → 4.13) Mistake. Rd6 was best. } (41... Rd6 42. Ra4) 42. Nd7?? { (4.13 → 1.64) Blunder. Ra4 was best. } (42. Ra4) 42... Re8? { (1.64 → 3.37) Mistake. Rd8 was best. } (42... Rd8 43. a6 Rd6 44. a7 Ra8 45. Ne5 Rxd4 46. Ra6 Kh7 47. Ke2 Rb4 48. Ke3 Rb7 49. Nc6) 43. a6? { (3.37 → 1.78) Mistake. Nb6 was best. } (43. Nb6) 43... Ra8?! { (1.78 → 2.84) Inaccuracy. Rd6 was best. } (43... Rd6 44. a7) 44. a7?? { (2.84 → 0.20) Blunder. Nc5 was best. } (44. Nc5 Rd6) 44... Rg7 45. Nb6 Rgxa7 46. Ra2?? { (0.00 → -5.60) Blunder. Rxa7 was best. } (46. Rxa7 Rxa7 47. Kg2 Kf7 48. Kg3 Ra1 49. Nc4 Ra4 50. Ne3 Kf6 51. d5 h5 52. f4 Rd4) 46... Rxa2 47. Nxa8 Rxa8 48. Kg2 Rd8 49. Kg3 Rxd4 50. f4 Kg7 51. f3 Rd3 52. Kg4 Kg6 53. h4?! { (-55.56 → Mate in 17) Checkmate is now unavoidable. f5+ was best. } (53. f5+ Kf6) 53... Rd1?! { (Mate in 17 → -55.67) Lost forced checkmate sequence. h5+ was best. } (53... h5+ 54. Kg3 Kf5 55. Kf2 Kxf4 56. Ke2 Re3+ 57. Kd2 Rxf3 58. Kd1 Kg4 59. Ke2 Rg3 60. Kd1) 54. f5+ Kg7 55. f4 Rg1+ 56. Kh5?! { (-66.20 → Mate in 6) Checkmate is now unavoidable. Kf3 was best. } (56. Kf3 Kf6) 56... Rf1 57. Kg4 Kf6 58. h5 Rg1+ 59. Kf3 Kxf5 60. Kf2 Rg4 61. Kf3 Rxf4+ 62. Kg3 Rg4+ 63. Kh3 Rg5 64. Kh4 Kf4 65. Kh3 Rxh5+ 66. Kg2 Ke3 67. Kg3 Rf5 68. Kg4 Rf3 69. Kh5 Rf4 70. Kxh6 Rf5 71. Kg6 Rc5 72. Kf6 Ke4 73. Ke6 Re5+ 74. Kf6 Kf4 75. Kg6 Rf5 76. Kh6 Kg4 77. Kg6 Kf4 78. Kh6 Rg5 79. Kh7 Kf5 80. Kh6 Kf6 81. Kh7 Rg6 82. Kh8 Rg5 83. Kh7 Rg6 84. Kh8 Kf7 85. Kh7 Rg5 86. Kh6 Kf6?? { (Mate in 2 → 0.00) Lost forced checkmate sequence. Rf5 was best. } (86... Rf5 87. Kh7 Rh5#) 87. Kh7 Rh5+ 88. Kg8 Rh6 89. Kf8 Rh8# { Black wins by checkmate. } 0-1