CohenChessClub.com

[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/SgaDIkfC"] [Date "2026.05.03"] [White "Sydney"] [Black "Nathaniel1"] [Result "0-1"] [UTCDate "2026.05.03"] [UTCTime "17:28:17"] [WhiteElo "1038"] [BlackElo "1112"] [WhiteRatingDiff "-19"] [BlackRatingDiff "+36"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A06"] [Opening "Zukertort Opening: Old Indian Attack"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. Nf3 d5 2. d3?! { (0.28 → -0.25) Inaccuracy. d4 was best. } { A06 Zukertort Opening: Old Indian Attack } (2. d4 Nf6) 2... Nc6 3. Bf4?! { (0.02 → -0.59) Inaccuracy. d4 was best. } (3. d4 Bf5) 3... e5?! { (-0.59 → 0.22) Inaccuracy. f6 was best. } (3... f6 4. d4 g5 5. Bg3 g4 6. Nh4 f5 7. c4 e5 8. cxd5 Qxd5 9. Nc3 Bb4 10. Bxe5) 4. Bxe5?! { (0.22 → -0.36) Inaccuracy. Nxe5 was best. } (4. Nxe5 Qf6 5. Nxc6 Qxf4 6. e3 Qf6 7. Nd4 c5 8. Ne2 Qxb2 9. Nd2 Nf6 10. g3 Bd6) 4... Nxe5 5. Nxe5 f6? { (0.00 → 1.26) Mistake. Qe7 was best. } (5... Qe7 6. Nf3 Qb4+ 7. Nbd2 Qxb2 8. e4 Bb4 9. exd5 Bc3 10. Rb1 Qxa2 11. Rb3 Bxd2+ 12. Nxd2) 6. Nf3 Bb4+ 7. Nfd2? { (1.91 → 0.56) Mistake. Nbd2 was best. } (7. Nbd2 Ne7) 7... Qd6?? { (0.56 → 2.27) Blunder. c6 was best. } (7... c6 8. a3 Ba5 9. e3 f5 10. Be2 Nf6 11. O-O Bc7 12. Nf3 Qe7 13. Nbd2 Bd7 14. c4) 8. e3 Bf5? { (1.80 → 3.08) Mistake. Qb6 was best. } (8... Qb6 9. Qh5+) 9. f4?? { (3.08 → -1.18) Blunder. c3 was best. } (9. c3 Bc5 10. d4 Bb6 11. c4 c5 12. cxd5 cxd4 13. e4 Bd7 14. Nc4 Qe7 15. Be2 Bc5) 9... h5? { (-1.18 → 0.23) Mistake. Qe6 was best. } (9... Qe6 10. Qf3) 10. g3?? { (0.23 → -1.73) Blunder. c3 was best. } (10. c3 Bc5 11. d4 Bb6 12. c4 Qe6 13. c5 Qxe3+ 14. Be2 Nh6 15. cxb6 Ng4 16. Rf1 Qxd4) 10... Bg4? { (-1.73 → -0.34) Mistake. Qb6 was best. } (10... Qb6 11. a3 Ba5 12. b4 Qxe3+ 13. Qe2 Bb6 14. Nc3 O-O-O 15. Qxe3 Bxe3 16. O-O-O d4 17. Ne4) 11. h3?? { (-0.34 → -8.99) Blunder. Be2 was best. } (11. Be2) 11... Bxd1 12. Kxd1 Bxd2 13. Kxd2 g5 14. e4 dxe4 15. d4 gxf4 16. gxf4 Qxf4+ 17. Kd1 O-O-O 18. Nc3 Kb8 19. Rg1 b6 20. Ne2 c5?? { (-10.10 → 4.78) Blunder. Qf2 was best. } (20... Qf2) 21. Nxf4 cxd4 22. Ne2? { (4.46 → 2.52) Mistake. Kd2 was best. } (22. Kd2 Ne7) 22... Rd5? { (2.52 → 4.06) Mistake. Ne7 was best. } (22... Ne7 23. Kd2 h4 24. Nf4 Nf5 25. Rg6 d3 26. cxd3 Rd4 27. Ng2 Ng3 28. Ke3 Rhd8 29. Nxh4) 23. c3?? { (4.06 → 1.64) Blunder. Rg7 was best. } (23. Rg7 Nh6 24. Re7 e3 25. Re4 Nf5 26. Rf4 Ra5 27. Ke1 Rc8 28. Rc1 h4 29. Nxd4 Nxd4) 23... dxc3+ 24. Kc2 cxb2 25. Kxb2 Rb5+ 26. Kc1 Rc5+ 27. Nc3?? { (1.62 → -4.44) Blunder. Kb2 was best. } (27. Kb2 Rb5+ 28. Kc2 Rc5+ 29. Nc3 Ne7 30. Kb2 f5 31. Rg7 Nd5 32. Nxd5 Rxd5 33. Rf7 Rhd8) 27... Rxc3+ 28. Kd1? { (-4.28 → -7.52) Mistake. Kb2 was best. } (28. Kb2 Rc7 29. Rg6 Ne7 30. Rxf6 Rhc8 31. Rd1 Rc2+ 32. Kb1 e3 33. Rf8 Rxf8 34. Kxc2 Nd5) 28... Rd3+?? { (-7.52 → 3.00) Blunder. Ne7 was best. } (28... Ne7) 29. Kc1?? { (3.00 → -6.00) Blunder. Bxd3 was best. } (29. Bxd3) 29... Ne7?? { (-6.00 → 1.60) Blunder. Rd7 was best. } (29... Rd7 30. Kb2 Ne7 31. Rg7 Rhd8 32. Re1 f5 33. Rf7 a5 34. Bb5 Rc7 35. Rc1 Rd2+ 36. Kb1) 30. Bxd3 exd3 31. Re1?? { (1.41 → -0.17) Blunder. Kd2 was best. } (31. Kd2) 31... Rc8+?! { (-0.17 → 0.47) Inaccuracy. Ng6 was best. } (31... Ng6 32. Re6) 32. Kd2 Rd8?? { (0.53 → 6.99) Blunder. Ng6 was best. } (32... Ng6 33. Kxd3 Nf4+ 34. Kd4 Nxh3 35. Re6 Ng5 36. Rxf6 Rd8+ 37. Kc4 Rc8+ 38. Kb4 Ne4 39. Rf7) 33. Rxe7 f5 34. Re5 Ka8 35. Rxf5 h4 36. Rh5 Rb8 37. Rxh4 Rd8 38. Rc4 b5 39. Rc5 b4 40. Rg1 a6 41. Rgg5 Rd4 42. Rcd5 Re4 43. Rde5 Rd4 44. Rd5 Re4 45. Rxd3 Rf4 46. Rb3 a5 47. Rd3 a4 48. Rd6 a3 49. Rg7 Rf8 50. Rc7 b3 51. Rb6 bxa2 52. Rc1 Rd8+?! { (4.62 → 7.08) Inaccuracy. Rf3 was best. } (52... Rf3 53. Rh6) 53. Kc2?? { (7.08 → 0.00) Blunder. Ke2 was best. } (53. Ke2) 53... Rc8+ 54. Kb3 Rxc1 55. Kxa3?? { (0.00 → Mate in 4) Checkmate is now unavoidable. Kxa2 was best. } (55. Kxa2 Ka7 56. Rb3 Rc6 57. Kxa3 Ka6 58. Kb2 Rc4 59. Rb8 Rh4 60. Kc3 Rxh3+ 61. Kc4 Rh2) 55... a1=Q+ 56. Kb4 Rb1+ 57. Kc5 Rc1+ 58. Kd6 Qa5 59. Rb3 Qa4 60. Rg3 Qf4+ 61. Ke6 Qxg3 62. h4 Qxh4 63. Kf5 Qh5+ 64. Kf6 Rc6+ 65. Ke7 Qh7+ 66. Ke8 Rc8# { Black wins by checkmate. } 0-1