CohenChessClub.com

[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/0QwcpHVQ"] [Date "2025.11.22"] [White "Nathan4"] [Black "LEO2"] [Result "0-1"] [UTCDate "2025.11.22"] [UTCTime "00:07:50"] [WhiteElo "1332"] [BlackElo "1375"] [WhiteRatingDiff "-10"] [BlackRatingDiff "+10"] [WhiteTitle "GM"] [BlackTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B30"] [Opening "Sicilian Defense: Old Sicilian"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 c5 2. Nf3 Nc6 { B30 Sicilian Defense: Old Sicilian } 3. Bc4?! { (0.45 → -0.08) Inaccuracy. Bb5 was best. } (3. Bb5) 3... e5? { (-0.08 → 0.97) Mistake. e6 was best. } (3... e6 4. O-O d5 5. exd5 exd5 6. Re1+ Be6 7. d4 Nf6 8. Bf1 Bd6 9. dxc5 Bxc5 10. Be3) 4. Nc3?! { (0.97 → 0.32) Inaccuracy. O-O was best. } (4. O-O) 4... Nf6?? { (0.32 → 1.94) Blunder. Be7 was best. } (4... Be7) 5. Nd5? { (1.94 → 0.53) Mistake. Ng5 was best. } (5. Ng5) 5... Nxd5 6. Bxd5 Nd4?? { (0.41 → 3.05) Blunder. Be7 was best. } (6... Be7 7. c3 O-O 8. O-O d6 9. d4 exd4 10. cxd4 Bg4 11. Bxc6 bxc6 12. dxc5 dxc5 13. Be3) 7. Nxe5 d6?? { (2.97 → 6.53) Blunder. Qg5 was best. } (7... Qg5 8. Ng4 Nxc2+ 9. Qxc2 Qxg4 10. O-O Be7 11. b3 O-O 12. f4 Qh4 13. Bb2 d6 14. f5) 8. Nxf7 Bg4 9. f3?! { (10.38 → 6.31) Inaccuracy. Qxg4 was best. } (9. Qxg4 Qd7 10. Qxd7+ Kxd7 11. Kd1 Be7 12. Nxh8 Rxh8 13. Bxb7 h5 14. Ba6 g5 15. c3 Ne6) 9... Qh4+ 10. g3?! { (6.38 → 3.93) Inaccuracy. Kf1 was best. } (10. Kf1 Bxf3) 10... Nxf3+? { (3.93 → 7.23) Mistake. Qh3 was best. } (10... Qh3 11. fxg4) 11. Kf2?? { (7.23 → -1.94) Blunder. Qxf3 was best. } (11. Qxf3 Bxf3 12. gxh4 Bxh1 13. Nxh8 Bf3 14. Bxb7 Rb8 15. Bc6+ Kd8 16. Nf7+ Kc7 17. Bd5 Be7) 11... Qh3?? { (-1.94 → 6.12) Blunder. Qf6 was best. } (11... Qf6 12. Kg2) 12. Nxh8 Be7 13. Bf7+?? { (6.03 → 2.60) Blunder. Qf1 was best. } (13. Qf1) 13... Kd8? { (2.60 → 4.13) Mistake. Kd7 was best. } (13... Kd7 14. Qf1) 14. d3? { (4.13 → 2.42) Mistake. Qf1 was best. } (14. Qf1 Ne5 15. Qxh3 Bxh3 16. Bh5 Kc7 17. d3 Rxh8 18. Be2 Rf8+ 19. Ke1 c4 20. Rg1 g5) 14... Ne1?? { (2.42 → 8.27) Blunder. Nd4 was best. } (14... Nd4) 15. Kxe1?? { (8.27 → -4.71) Blunder. Qxe1 was best. } (15. Qxe1 Kd7 16. Qf1 Rxh8 17. Qxh3 Bxh3 18. Bd5 Bf6 19. c3 Rf8 20. Ke2 Bg4+ 21. Ke1 b5) 15... Bxd1 16. Kxd1 Qg2 17. Re1 h6?? { (-4.46 → 0.00) Blunder. Kc7 was best. } (17... Kc7 18. Bd5 Rxh8 19. c4 Rf8 20. e5 Qxh2 21. Bf4 Qxb2 22. Rc1 g5 23. exd6+ Bxd6 24. Re7+) 18. h4?? { (0.00 → -3.12) Blunder. Bd5 was best. } (18. Bd5 Qf3+ 19. Kd2 Qf2+ 20. Re2 Bg5+ 21. Kd1 Qf1+ 22. Re1 Qf3+ 23. Re2 Qf1+) 18... Qf3+ 19. Re2 Qxg3?? { (-2.67 → 1.45) Blunder. Kd7 was best. } (19... Kd7 20. e5) 20. Bd5?? { (1.45 → -1.09) Blunder. Ng6 was best. } (20. Ng6) 20... Bxh4 21. Nf7+ Ke7 22. Bxb7?? { (-0.85 → -6.57) Blunder. e5 was best. } (22. e5 Qg1+ 23. Kd2 dxe5 24. b3 Bg3 25. c4 Qf1 26. Rg2 e4 27. Bxe4 Qf6 28. Kc2 Qxa1) 22... Rf8 23. Bd5 Rxf7 24. Bxf7? { (-7.69 → Mate in 8) Checkmate is now unavoidable. Kd2 was best. } (24. Kd2 Rf2 25. Rxf2 Qxf2+ 26. Kc3 Qd4+ 27. Kd2 Bg3 28. c3 Qf2+ 29. Kd1 g5 30. Bd2 Bf4) 24... Kxf7?? { (Mate in 8 → -2.92) Lost forced checkmate sequence. Qg1+ was best. } (24... Qg1+ 25. Kd2 Bg5+ 26. Re3 Qxe3+ 27. Kd1 Qg1+ 28. Ke2 Qg2+ 29. Ke1 Bh4+ 30. Kd1 Qf1+ 31. Kd2) 25. Bd2? { (-2.92 → -5.20) Mistake. Be3 was best. } (25. Be3 Qf3) 25... Qg1+ 26. Be1 Bxe1?? { (-5.25 → -2.39) Blunder. h5 was best. } (26... h5) 27. Rxe1 Qf2 28. Re2 Qg1+ 29. Re1 Qg2 30. Re2 Qg4 31. Kd2 h5 32. Rf1+ Kg6 33. Ke3 h4 34. d4?? { (-1.65 → -4.88) Blunder. Ref2 was best. } (34. Ref2 Kh5 35. Rf8 g6 36. Rh8+ Kg5 37. Rh7 c4 38. Kf2 Qg3+ 39. Ke2 Qg2+ 40. Rf2 Qg4+) 34... cxd4+ 35. Kxd4? { (-4.60 → -8.59) Mistake. Kd2 was best. } (35. Kd2 Kh5) 35... h3?? { (-8.59 → -0.23) Blunder. Qxe2 was best. } (35... Qxe2 36. Rh1 Qd2+ 37. Kc4 Qxc2+ 38. Kd4 Qd2+ 39. Kc4 Qe2+ 40. Kd4 Qxb2+ 41. Ke3 Qa3+ 42. Ke2) 36. Rf8?? { (-0.23 → -7.94) Blunder. Rh2 was best. } (36. Rh2) 36... Qg3?? { (-7.94 → -0.58) Blunder. Qxe2 was best. } (36... Qxe2 37. Rh8) 37. e5?? { (-0.58 → -5.95) Blunder. Rh8 was best. } (37. Rh8) 37... h2 38. Rh8 Qg1+?! { (-6.07 → -4.16) Inaccuracy. dxe5+ was best. } (38... dxe5+ 39. Rxe5 Qg1+ 40. Kc4 h1=R 41. Rxh1 Qxh1 42. b4 Qf1+ 43. Kb3 Qf3+ 44. c3 Qd1+ 45. Ka3) 39. Re3?! { (-4.16 → -6.70) Inaccuracy. Kc3 was best. } (39. Kc3) 39... h1=Q 40. Rxh1 Qxh1?! { (-6.14 → -4.44) Inaccuracy. dxe5+ was best. } (40... dxe5+ 41. Ke4 Qxh1+ 42. Kxe5 Kf7 43. c4 g5 44. c5 Qh2+ 45. Kd4 Qd2+ 46. Rd3 Qf4+ 47. Kc3) 41. Rh3? { (-4.44 → -8.45) Mistake. e6 was best. } (41. e6 Qh4+) 41... Qxh3 42. exd6 Qg4+ 43. Ke5 Qf5+ 44. Kd4 Kf6 45. Kc4 Ke6 46. b4 Kxd6 47. b5?! { (-62.24 → Mate in 17) Checkmate is now unavoidable. Kb3 was best. } (47. Kb3 a5) 47... Qd5+?! { (Mate in 17 → -73.86) Lost forced checkmate sequence. Qxc2+ was best. } (47... Qxc2+ 48. Kd4 Qxa2 49. b6 Qf2+ 50. Kc3 axb6 51. Kc4 g5 52. Kd3 g4 53. Kc4 g3 54. Kb4) 48. Kb4 Qc5+ 49. Ka5 Kc7 50. c4 Qb6+ 51. Kb4 a5+ 52. Ka4?! { (-73.07 → Mate in 5) Checkmate is now unavoidable. Kc3 was best. } (52. Kc3 Qe3+ 53. Kc2 Kb6 54. Kd1 Qd3+ 55. Ke1 Qxc4 56. a3 Qc1+ 57. Ke2 Qxa3 58. Kf2 Qa2+) 52... g6 53. Kb3 g5 54. Kc2 g4 55. Kd2 g3 56. Ke2 g2 { White resigns. } 0-1