CohenChessClub.com

[Event "MrCohenOS Arena"] [Site "https://cohenchessclub.com/tgcY6qdx"] [Date "2024.01.16"] [White "Bohdan"] [Black "Ephraim"] [Result "1-0"] [UTCDate "2024.01.16"] [UTCTime "21:04:25"] [WhiteElo "1573"] [BlackElo "1202"] [WhiteRatingDiff "+1"] [BlackRatingDiff "-3"] [WhiteTitle "🐍"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B00"] [Opening "Nimzowitsch Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 Nc6 { B00 Nimzowitsch Defense } 2. Bc4? { (0.70 → -0.35) Mistake. d4 was best. } (2. d4 d5 3. e5 Bf5 4. c3 e6 5. Nd2 f6 6. Ngf3 fxe5) 2... b6?? { (-0.35 → 1.27) Blunder. e6 was best. } (2... e6 3. d4 d5 4. exd5 exd5 5. Be2 Nf6 6. Nf3 Bd6 7. Bg5) 3. Qf3?? { (1.27 → -0.61) Blunder. d4 was best. } (3. d4) 3... f6? { (-0.61 → 0.75) Mistake. e6 was best. } (3... e6 4. Qd1) 4. Nh3? { (0.75 → -0.65) Mistake. d4 was best. } (4. d4 Nxd4 5. Qh5+ g6 6. Qd5 Nxc2+ 7. Kd1 e6 8. Qxa8 Nxa1 9. Nf3 Ne7 10. Nc3 Nc6) 4... Nd4?? { (-0.65 → 2.49) Blunder. Ne5 was best. } (4... Ne5) 5. Qd3?? { (2.49 → 0.78) Blunder. Qh5+ was best. } (5. Qh5+ g6 6. Qd5 Nxc2+ 7. Kd1 e6 8. Qxa8 Nxa1 9. Qxa7 Ne7 10. b3 Nc6 11. Qa4 Bb7) 5... Nc6 6. Qf3?? { (0.72 → -0.86) Blunder. Qe2 was best. } (6. Qe2 e6 7. c3 Ne5 8. Bb3 a5 9. d4 Ba6 10. c4 Bb4+ 11. Nc3 Nc6 12. Be3 e5) 6... Ne5 7. Qb3 Nxc4 8. Qxc4 Bb7 9. Qe2 Nh6 10. Qf3? { (-0.22 → -1.41) Mistake. d4 was best. } (10. d4) 10... e6 11. d3 Bb4+? { (-1.18 → 0.25) Mistake. Nf7 was best. } (11... Nf7 12. Nc3) 12. c3 Bc5? { (0.38 → 1.50) Mistake. Bf8 was best. } (12... Bf8 13. Bxh6 gxh6 14. Qh5+ Ke7 15. Nd2 Qe8 16. Qh4 Qg6 17. g3 Ke8 18. Nf4 Qg5 19. Qh3) 13. Bxh6 gxh6 14. Qh5+ Ke7? { (1.39 → 3.14) Mistake. Kf8 was best. } (14... Kf8) 15. Qxh6?? { (3.14 → 0.40) Blunder. d4 was best. } (15. d4 Bd6 16. e5 fxe5 17. dxe5 Bc5 18. b4 Rg8 19. Rg1 Bxf2+ 20. Nxf2 Rg5 21. Qxh6 Rxe5+) 15... Ba6?? { (0.40 → 6.82) Blunder. Qg8 was best. } (15... Qg8) 16. Qg7+ Kd6 17. e5+?? { (6.13 → 0.48) Blunder. b4 was best. } (17. b4) 17... Kxe5?? { (0.48 → 7.90) Blunder. Kc6 was best. } (17... Kc6 18. d4 Be7 19. Nd2 Kb7 20. g3 Bb5 21. O-O-O Rg8 22. Qh6 fxe5 23. dxe5 Qf8 24. Qxf8) 18. d4+ Bxd4 19. cxd4+ Kxd4 20. Qg4+ Ke5 21. Qg3+ Kf5 22. Qf4+ Kg6 23. Qg4+ Kf7 24. Qf4? { (4.92 → 2.89) Mistake. Nc3 was best. } (24. Nc3 h5) 24... Rg8?! { (2.89 → 4.29) Inaccuracy. d5 was best. } (24... d5 25. Nc3) 25. Nc3 Rxg2 26. Ne2?? { (4.98 → 2.19) Blunder. O-O-O was best. } (26. O-O-O) 26... Qg8?! { (2.19 → 2.96) Inaccuracy. Qe7 was best. } (26... Qe7 27. Rc1 c5 28. Qe4 Rgg8 29. Qxh7+ Kf8 30. Qh4 Qf7 31. Rg1 Ke7 32. Rd1 Rxg1+ 33. Nhxg1) 27. O-O-O Bxe2? { (2.62 → 4.40) Mistake. Rg4 was best. } (27... Rg4 28. Qf3 Bxe2 29. Qxe2 Ke7 30. f3 Rh4 31. Nf2 Qg5+ 32. Kb1 Rg8 33. Ng4 h5 34. Ne3) 28. Rxd7+ Ke8 29. Rd2?? { (4.67 → 0.87) Blunder. Qxc7 was best. } (29. Qxc7) 29... Rd8?? { (0.87 → 5.05) Blunder. Rg4 was best. } (29... Rg4) 30. Qa4+?? { (5.05 → -2.37) Blunder. Rxe2 was best. } (30. Rxe2 Rd6 31. Qxf6 Kd7 32. Qf3 Rg4 33. Rd1 Rc4+ 34. Rc2 Rxc2+ 35. Kxc2 Qg6+ 36. Kb3 Rxd1) 30... Kf7?? { (-2.37 → 2.70) Blunder. b5 was best. } (30... b5 31. Qe4) 31. Nf4?? { (2.70 → -7.92) Blunder. Rxe2 was best. } (31. Rxe2) 31... Rxd2?? { (-7.92 → 1.37) Blunder. Rg1+ was best. } (31... Rg1+) 32. Nxg2?? { (1.37 → -7.70) Blunder. Kxd2 was best. } (32. Kxd2) 32... Rd8 33. Nf4 Bf3 34. Rf1?! { (-5.30 → -7.61) Inaccuracy. Re1 was best. } (34. Re1 Qg4) 34... Qg4 35. h3 Qf5 36. Qxa7? { (-7.59 → Mate in 9) Checkmate is now unavoidable. Qc4 was best. } (36. Qc4 Qe5) 36... Qxf4+ 37. Kb1 Be4+?! { (Mate in 8 → -13.56) Lost forced checkmate sequence. Qc4 was best. } (37... Qc4 38. Qa6 Qxa6 39. Rc1 Qd3+ 40. Ka1 Qd1 41. a3 Qxc1+ 42. Ka2 Rd2 43. Kb3 Bd1+ 44. Ka2) 38. Ka1 Rd2 39. Qa4 Re2 40. Qd7+ Kg6 41. Rg1+ Kf5?? { (-8.83 → 6.49) Blunder. Kh6 was best. } (41... Kh6 42. f3) 42. Qb5+?? { (6.49 → 1.99) Blunder. Qxh7+ was best. } (42. Qxh7+ Ke5) 42... Bd5 43. Qxe2 Bf3? { (1.89 → 3.38) Mistake. e5 was best. } (43... e5 44. Qh5+) 44. Qb5+ Ke4?? { (3.14 → 10.60) Blunder. Bd5 was best. } (44... Bd5 45. Qd3+) 45. Qc4+?? { (10.60 → 3.10) Blunder. Re1+ was best. } (45. Re1+ Be2) 45... Kf5 46. Qd3+ Be4 47. Qe3?? { (3.31 → 1.12) Blunder. Qd1 was best. } (47. Qd1) 47... Qxe3 48. fxe3 b5?! { (1.12 → 1.81) Inaccuracy. Bd5 was best. } (48... Bd5 49. Rg4) 49. Rf1+ Ke5 50. h4? { (1.92 → 0.63) Mistake. Rf4 was best. } (50. Rf4 c5) 50... b4?? { (0.63 → 3.67) Blunder. f5 was best. } (50... f5 51. b3 b4 52. Kb2 Bd3 53. Rf4 c5 54. a4 bxa3+ 55. Kxa3 Be4 56. Kb2 Kf6 57. Kc3) 51. Rc1?! { (3.67 → 2.48) Inaccuracy. a4 was best. } (51. a4) 51... c6? { (2.48 → 4.48) Mistake. Bd3 was best. } (51... Bd3 52. a4) 52. Rc5+ Bd5 53. Rc2?? { (4.00 → -2.65) Blunder. a4 was best. } (53. a4 Kd6 54. Ra5 f5 55. Kb1 c5 56. Rb5 Bc6 57. Rb6 e5 58. a5 f4 59. exf4 exf4) 53... f5?? { (-2.65 → 0.00) Blunder. Ke4 was best. } (53... Ke4) 54. Rf2?? { (0.00 → -6.89) Blunder. a4 was best. } (54. a4 bxa3 55. bxa3 Ke4 56. Rc3 e5 57. Kb2 f4 58. exf4 exf4 59. Kc2 Kd4 60. Rd3+ Ke4) 54... Be4?? { (-6.89 → 2.18) Blunder. Ke4 was best. } (54... Ke4) 55. h5? { (2.18 → 0.87) Mistake. a4 was best. } (55. a4 bxa3 56. bxa3 Kd5 57. Rd2+ Kc4 58. a4 e5 59. a5 Kb5 60. Ra2 Ka6 61. Kb2 f4) 55... f4?? { (0.87 → 5.83) Blunder. Bd3 was best. } (55... Bd3) 56. exf4+ Kf5 57. Rf1 Bg2 58. Rf2 Bd5 59. a3 bxa3 60. bxa3 Bb3 61. Rb2 Ba4 62. Rb4 Bc2 63. a4 Bd3 64. a5 h6 65. Rb3 Bc4 66. Rc3 Bb5 67. Kb2 c5 68. Rxc5+ e5 69. Rxb5 Kxf4 70. Rxe5 Kxe5 71. a6 Ke4?! { (59.69 → Mate in 12) Checkmate is now unavoidable. Kf6 was best. } (71... Kf6 72. a7) 72. a7 Ke3 73. a8=Q Kf2 74. Qa3 Kg2 75. Kc2 Kf2 76. Kd2 Kg2 77. Ke2 Kh2 78. Qf8 Kg3 79. Qf3+ Kh4 80. Qf1 Kxh5 81. Qg1 Kh4 82. Kf3 Kh5 83. Kf4 Kh4 84. Qg4# { White wins by checkmate. } 1-0