CohenChessClub.com

[Event "MrCohenOS Arena"] [Site "https://cohenchessclub.com/pztwyDHx"] [Date "2026.09.30"] [White "Jacob6"] [Black "Ellis"] [Result "1-0"] [UTCDate "2026.09.30"] [UTCTime "13:44:34"] [WhiteElo "1473"] [BlackElo "1176"] [WhiteRatingDiff "+15"] [BlackRatingDiff "-14"] [WhiteTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A00"] [Opening "Polish Opening"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. b4 { A00 Polish Opening } b6?! { (-0.49 → 0.03) Inaccuracy. e5 was best. } (1... e5 2. a3) 2. Ba3 a6 3. Nc3?! { (-0.24 → -1.25) Inaccuracy. c4 was best. } (3. c4 Bb7 4. Bb2 Nf6 5. e3 e6 6. a3 c5 7. bxc5 bxc5 8. Nf3 Bd6 9. Be2 Nc6) 3... d5 4. d4 c5? { (-1.64 → -0.13) Mistake. e6 was best. } (4... e6 5. Nb1 Bd6 6. c3 Nf6 7. e3 O-O 8. Be2 Nbd7 9. Nf3 Qe7 10. Bb2 e5 11. dxe5) 5. Bc1?? { (-0.13 → -2.88) Blunder. bxc5 was best. } (5. bxc5 e6 6. e4 Nf6 7. Bd3 bxc5 8. Bxc5 Bxc5 9. dxc5 Nbd7 10. c6 Ne5 11. exd5 Nxd5) 5... a5?? { (-2.88 → 0.41) Blunder. cxb4 was best. } (5... cxb4 6. Nb1 e6 7. e3 Nf6 8. a3 Bb7 9. Bd3 b5 10. Nf3 bxa3 11. Bxa3 Bxa3 12. Rxa3) 6. Rb1?? { (0.41 → -3.56) Blunder. bxc5 was best. } (6. bxc5 bxc5 7. dxc5 Nf6 8. e4 e5 9. Ba3 Nbd7 10. Bb5 d4 11. Nd5 Ba6 12. Nxf6+ gxf6) 6... cxb4? { (-3.56 → -2.03) Mistake. axb4 was best. } (6... axb4 7. Nb5) 7. Bf4?? { (-2.03 → -6.53) Blunder. Nb5 was best. } (7. Nb5 Bd7) 7... Be6?? { (-6.53 → -0.16) Blunder. bxc3 was best. } (7... bxc3 8. e4) 8. Nb5 Bc8?? { (-0.33 → 7.68) Blunder. Na6 was best. } (8... Na6 9. e3 Nf6 10. h4 Bg4 11. f3 Bd7 12. g4 e6 13. Qd2 Bc6 14. Qh2 Be7 15. Kd2) 9. Qd3?? { (7.68 → 0.65) Blunder. Nc7+ was best. } (9. Nc7+ Qxc7) 9... f6?? { (0.65 → 6.30) Blunder. Na6 was best. } (9... Na6 10. e4) 10. a4?? { (6.30 → 0.92) Blunder. Nc7+ was best. } (10. Nc7+ Kf7 11. Nxa8 Na6 12. Qb5 e5 13. Qxb6 Qd7 14. dxe5 Bc5 15. e6+ Qxe6 16. Qxe6+ Bxe6) 10... Nd7?? { (0.92 → 8.91) Blunder. Na6 was best. } (10... Na6 11. Nf3) 11. c3?? { (8.91 → 0.20) Blunder. Bc7 was best. } (11. Bc7) 11... Ra7?? { (0.20 → 8.31) Blunder. Ba6 was best. } (11... Ba6 12. Bd2 bxc3 13. Bxc3 e5 14. e3 Be7 15. dxe5 Nxe5 16. Qxd5 Qxd5 17. Nc7+ Kf7 18. Nxd5) 12. cxb4?? { (8.31 → 2.46) Blunder. Nxa7 was best. } (12. Nxa7) 12... Rb7?! { (2.46 → 3.37) Inaccuracy. Ba6 was best. } (12... Ba6 13. Bd2) 13. bxa5 Ra7?? { (2.78 → 10.15) Blunder. bxa5 was best. } (13... bxa5) 14. Rc1?! { (10.15 → 5.25) Inaccuracy. Nxa7 was best. } (14. Nxa7) 14... Rxa5?! { (5.25 → 9.54) Inaccuracy. Ba6 was best. } (14... Ba6 15. Bd2) 15. Rc6?? { (9.54 → 0.35) Blunder. Bc7 was best. } (15. Bc7 Rxb5 16. Bxd8 Kxd8 17. axb5 e5 18. dxe5 fxe5 19. Qxd5 Nf6 20. Qc4 Bc5 21. f3 Bb7) 15... Rxb5?? { (0.35 → 6.30) Blunder. e5 was best. } (15... e5 16. Bd2) 16. Qxb5?! { (6.30 → 4.36) Inaccuracy. Bc7 was best. } (16. Bc7 Rc5 17. dxc5 Nxc5 18. Rxc5 Qd7 19. Bxb6 e5 20. Qxd5 Bxc5 21. Qxd7+ Bxd7 22. Bxc5 Bxa4) 16... Bb7?! { (4.36 → 6.85) Inaccuracy. e5 was best. } (16... e5) 17. Qa5?? { (6.85 → -10.96) Blunder. Rc7 was best. } (17. Rc7 e5 18. Rxb7 exf4 19. e3 Ne7 20. Bd3 Qc8 21. Rxb6 Qc1+ 22. Ke2 fxe3 23. Nf3 Qxh1) 17... Bxc6 18. e3 Bxa4?? { (-15.60 → 1.95) Blunder. bxa5 was best. } (18... bxa5 19. Bd3 Bxa4 20. Nf3 e6 21. O-O g5 22. Bg3 g4 23. Ra1 Bc6 24. Nh4 Kf7 25. f3) 19. Qxa4 b5?? { (1.61 → 6.46) Blunder. e5 was best. } (19... e5) 20. Qb4?? { (6.46 → -3.76) Blunder. Bxb5 was best. } (20. Bxb5 g5 21. Bg3 h5 22. h4 gxh4 23. Bf4 Bh6 24. Ne2 Bxf4 25. Nxf4 f5 26. Ng6 Rh6) 20... Nb8?? { (-3.76 → 3.36) Blunder. e5 was best. } (20... e5) 21. Qxb5+ Kf7? { (4.01 → 8.15) Mistake. Nd7 was best. } (21... Nd7 22. Bd3) 22. g3?? { (8.15 → 3.00) Blunder. Bxb8 was best. } (22. Bxb8 Qc8 23. Kd2 Nh6 24. Bd3 e5 25. Ne2 Bb4+ 26. Qxb4 Qxb8 27. Qa4 Rd8 28. Rb1 Qxb1) 22... Qc7?? { (3.00 → 14.61) Blunder. Qc8 was best. } (22... Qc8 23. Bd3) 23. Bxc7 Nd7 24. Bd6 exd6 25. Qxd7+ Kg6?! { (13.21 → Mate in 4) Checkmate is now unavoidable. Ne7 was best. } (25... Ne7 26. Bg2 g6 27. Bxd5+ Kg7 28. Bb3 h5 29. Nf3 g5 30. Kf1 Rh7 31. Qxd6 Ng6 32. Qd7+) 26. Qxd6?? { (Mate in 4 → 3.66) Lost forced checkmate sequence. Bd3+ was best. } (26. Bd3+ f5 27. Qxf5+ Kh6 28. Qh3+ Kg5 29. Qh4#) 26... Bxd6 27. Bd3+ Kf7 28. h4 Ke7?! { (3.12 → 4.09) Inaccuracy. Ne7 was best. } (28... Ne7 29. Ke2) 29. Nf3 Kd7?! { (3.82 → 4.83) Inaccuracy. h5 was best. } (29... h5 30. Ke2 Ke6 31. Ra1 Ne7 32. Ra6 Rb8 33. Bc2 Kd7 34. Ne1 Rb2 35. Kd1 Kc7 36. Nd3) 30. Ke2 g6?! { (4.69 → 6.29) Inaccuracy. Ne7 was best. } (30... Ne7 31. h5 Ke6 32. g4 Kf7 33. Kf1 Ra8 34. Bxh7 Ra1+ 35. Kg2 Rxh1 36. Kxh1 g5 37. Bd3) 31. Bb5+? { (6.29 → 3.71) Mistake. h5 was best. } (31. h5 gxh5 32. Bf5+ Ke7 33. Ra1 Bb8 34. Ra5 Nh6 35. Rxd5 Bd6 36. Nh4 Rb8 37. Bxh7 Rb2+) 31... Ke6 32. e4?? { (4.00 → 0.39) Blunder. Ra1 was best. } (32. Ra1 Ne7) 32... Kf7?? { (0.39 → 5.00) Blunder. dxe4 was best. } (32... dxe4 33. Bc4+ Kd7 34. Nd2 f5 35. h5 Nh6 36. g4 Ke7 37. g5 Nf7 38. f3 Rd8 39. hxg6) 33. exd5?! { (5.00 → 3.50) Inaccuracy. e5 was best. } (33. e5 Be7 34. Bc6 Ke6 35. Ra1 Nh6 36. Ra6 fxe5 37. Nxe5 Bd6 38. Bd7+ Ke7 39. Ra7 Bxe5) 33... Be7? { (3.50 → 6.23) Mistake. Ne7 was best. } (33... Ne7) 34. d6?? { (6.23 → 1.98) Blunder. Ra1 was best. } (34. Ra1 Nh6 35. d6 Bxd6 36. Bc4+ Kg7 37. Ra7+ Kf8 38. Be6 Bb4 39. h5 gxh5 40. Nh4 Be7) 34... Bxd6 35. d5?! { (2.00 → 1.18) Inaccuracy. Bc4+ was best. } (35. Bc4+ Kg7) 35... Be7?? { (1.18 → 5.63) Blunder. Ne7 was best. } (35... Ne7 36. Nd4) 36. Bc4? { (5.63 → 3.18) Mistake. Ra1 was best. } (36. Ra1 Bc5 37. Rc1 Bb4 38. Rc4 Bd6 39. Rc8 f5 40. Rd8 Be7 41. Ra8 Bd6 42. Nd4 f4) 36... Kg7 37. h5? { (3.81 → 1.84) Mistake. Ra1 was best. } (37. Ra1) 37... gxh5? { (1.84 → 3.61) Mistake. Nh6 was best. } (37... Nh6 38. Nd4) 38. Rxh5? { (3.61 → 2.11) Mistake. Ra1 was best. } (38. Ra1 Bc5 39. Ra5 Bb4 40. Ra6 Ne7 41. d6 Nf5 42. Ra7+ Kh6 43. d7 Rd8 44. Ra6 Kg7) 38... Kf7?? { (2.11 → 6.09) Blunder. Bc5 was best. } (38... Bc5 39. Rh4) 39. Rf5?? { (6.09 → 1.87) Blunder. d6+ was best. } (39. d6+ Kg7) 39... Ke8?? { (1.87 → 4.65) Blunder. Bd6 was best. } (39... Bd6 40. Nd4 Ne7 41. Rh5 h6 42. Bd3 Be5 43. Nc6 Nxd5 44. Nxe5+ fxe5 45. Bc4 Kg6 46. Rxe5) 40. Re5?? { (4.65 → -4.43) Blunder. d6 was best. } (40. d6) 40... Kf8?? { (-4.43 → 6.52) Blunder. fxe5 was best. } (40... fxe5 41. d6 Bxd6 42. Ng5 Nh6 43. f3 Be7 44. Nxh7 Nf5 45. f4 exf4 46. gxf4 Rxh7 47. Kf3) 41. Bb5?? { (6.52 → -4.46) Blunder. Re6 was best. } (41. Re6 Kg7 42. d6 Bxd6 43. Rxd6 Ne7 44. Kd2 Ra8 45. Rd7 Re8 46. Nh4 Kh8 47. Bf7 Rf8) 41... h5?? { (-4.46 → 5.58) Blunder. fxe5 was best. } (41... fxe5 42. d6 Bxd6 43. Bd3 Ne7 44. Ng5 Kg7 45. Be4 Ng6 46. Ne6+ Kf7 47. Ng5+ Kf6 48. Bxg6) 42. Rg5?? { (5.58 → -4.56) Blunder. Re6 was best. } (42. Re6 h4 43. Nxh4 Rh5 44. Bc4 Re5+ 45. Rxe5 fxe5 46. Ng6+ Ke8 47. Nxe5 Bc5 48. Ng4 Ne7) 42... Kf7?? { (-4.56 → 0.80) Blunder. fxg5 was best. } (42... fxg5 43. d6 Bf6 44. d7 Ke7 45. Nd2 Nh6 46. Ne4 Rb8 47. Bd3 Ng4 48. f4 Bd4 49. Nxg5) 43. Rg4?? { (0.80 → -5.00) Blunder. Rf5 was best. } (43. Rf5 Bd6 44. Nh4 Ne7 45. Rf3 Rb8 46. Bc4 Rb2+ 47. Kd1 Rb4 48. Rc3 f5 49. f4 Kf6) 43... Rh7?? { (-5.00 → 4.94) Blunder. hxg4 was best. } (43... hxg4 44. Nd4 Bc5 45. Nf5 Rh2 46. Kd3 Rxf2 47. Bd7 Rxf5 48. Bxf5 Nh6 49. Bxg4 Nxg4 50. d6) 44. Rc4 Rg7 45. Rc7 Kg6 46. Bd3+ Kf7 47. Rc8?! { (6.32 → 4.67) Inaccuracy. Nd4 was best. } (47. Nd4 Rg5 48. Nf5 Ke8 49. d6 Rxf5 50. d7+ Kd8 51. Rc8+ Kxd7 52. Bxf5+ Kd6 53. Ra8 Ke5) 47... Bf8?! { (4.67 → 6.71) Inaccuracy. Bb4 was best. } (47... Bb4 48. Rb8) 48. Ne5+?? { (6.71 → 0.00) Blunder. Bf5 was best. } (48. Bf5 Nh6 49. Be6+ Ke7 50. Nd4 Rg5 51. Nc6+ Kd6 52. Rxf8 Rxd5 53. Rxf6 Rc5 54. Bh3+ Kc7) 48... fxe5 49. g4?? { (0.02 → -3.12) Blunder. d6 was best. } (49. d6) 49... Rxg4 50. f3?! { (-3.14 → -4.38) Inaccuracy. Rc7+ was best. } (50. Rc7+ Kf6) 50... Rg7?? { (-4.38 → -0.31) Blunder. Rd4 was best. } (50... Rd4 51. Rc7+) 51. Bf5?? { (-0.31 → -4.06) Blunder. d6 was best. } (51. d6) 51... Ke7?? { (-4.06 → -0.16) Blunder. Rg2+ was best. } (51... Rg2+) 52. Rc6?? { (-0.16 → -2.58) Blunder. d6+ was best. } (52. d6+) 52... Ke8?? { (-2.58 → -0.28) Blunder. Rg2+ was best. } (52... Rg2+ 53. Ke1) 53. Be6?? { (-0.28 → -3.53) Blunder. Rc8+ was best. } (53. Rc8+ Ke7) 53... Kd8?? { (-3.53 → 0.00) Blunder. Nh6 was best. } (53... Nh6 54. Rc8+ Ke7 55. f4 exf4 56. Kf3 Rg6 57. Kxf4 h4 58. Rc6 Rg3 59. Rc8 Bg7 60. Rc7+) 54. Rc8+ Ke7 55. d6+?? { (0.00 → -6.06) Blunder. Rc7+ was best. } (55. Rc7+ Kf6 56. Rc8 Rf7 57. Bxf7 Kxf7 58. Rc7+ Kf6 59. Rc8 Kg7 60. Rc7+ Kh8 61. Rc8) 55... Kxe6 56. Rd8 Kf5 57. d7 Rxd7?! { (-6.31 → -4.19) Inaccuracy. Be7 was best. } (57... Be7) 58. Rc8? { (-4.19 → -7.55) Mistake. Rxd7 was best. } (58. Rxd7 Be7 59. Kf2 Bf6 60. Kg2 Ne7 61. Rd8 Ng6 62. Rg8 Bg5 63. Rg7 Ne7 64. Rf7+ Bf6) 58... Rd4 59. Rxf8+ Kg5?? { (-6.36 → -0.13) Blunder. Nf6 was best. } (59... Nf6 60. Kf2) 60. Rxg8+ Kf5 61. Rf8+ Kg5 62. f4+?? { (-0.10 → -5.42) Blunder. Re8 was best. } (62. Re8 Kf6 63. Rf8+ Kg6 64. Rg8+ Kf7 65. Rg5 Rd5 66. Rxh5 Rb5 67. Rh8 Kg7 68. Rh4 Rb2+) 62... Kh4?? { (-5.42 → 0.00) Blunder. Rxf4 was best. } (62... Rxf4) 63. f5 Kh3 64. f6 Re4+ 65. Kd3 Re1 66. f7 Rd1+ 67. Kc2 Rd4?? { (0.00 → 7.51) Blunder. Rd7 was best. } (67... Rd7 68. Rh8 Rxf7 69. Rxh5+ Kg4 70. Rxe5 Ra7 71. Kd3 Ra1 72. Ke4 Ra8 73. Ke3 Ra3+ 74. Kd4) 68. Re8 e4?? { (6.85 → Mate in 9) Checkmate is now unavoidable. Rf4 was best. } (68... Rf4 69. f8=Q) 69. f8=Q e3 70. Rxe3+ Kh2 71. Qc5 Rd7 72. Re1 Rc7 73. Qxc7+ Kh3 74. Rh1+ Kg2 75. Qc4 Kxh1 76. Qh4+ Kg1 77. Qe1+ Kg2 78. Kd1 h4 79. Ke2 Kh3 80. Ke3 Kg2 81. Qf2+ Kh1 82. Kf3 h3 83. Kg3 h2 84. Qxh2# { White wins by checkmate. } 1-0