Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/FlNz4mRD"]
[Date "2025.12.13"]
[White "Nathan4"]
[Black "Robbie3"]
[Result "1-0"]
[UTCDate "2025.12.13"]
[UTCTime "00:20:28"]
[WhiteElo "1312"]
[BlackElo "1218"]
[WhiteRatingDiff "+8"]
[BlackRatingDiff "-9"]
[WhiteTitle "GM"]
[BlackTitle "NM"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "C49"]
[Opening "Four Knights Game: Double Spanish"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 { C49 Four Knights Game: Double Spanish } 5. O-O Bxc3?! { (0.25 → 0.82) Inaccuracy. O-O was best. } (5... O-O 6. d3 d6 7. Ne2 Ne7 8. c3 Ba5 9. Ba4 Ng6 10. Ng3 c6 11. Bc2 Re8 12. d4) 6. dxc3?! { (0.82 → 0.09) Inaccuracy. bxc3 was best. } (6. bxc3 d6 7. d4 O-O 8. Re1 Bd7 9. Bg5 a6 10. Bd3 h6 11. Bh4 Bg4 12. h3 Bxf3) 6... O-O 7. Bg5 d6 8. Bxc6 bxc6 9. b4 Bg4?! { (-0.86 → -0.35) Inaccuracy. h6 was best. } (9... h6 10. Bh4 Qe7 11. Re1 a5 12. Nd2 g5 13. Bg3 h5 14. h4 Ng4 15. hxg5 Qxg5 16. Nf3) 10. h3 Bxf3? { (-0.61 → 0.45) Mistake. Be6 was best. } (10... Be6 11. Nd2 h6 12. Be3 Nd7 13. f4 exf4 14. Bxf4 a5 15. Nb3 a4 16. Nd4 Bc4 17. Re1) 11. Qxf3 d5?! { (0.55 → 1.18) Inaccuracy. h6 was best. } (11... h6 12. Bxf6) 12. exd5?! { (1.18 → 0.62) Inaccuracy. Rad1 was best. } (12. Rad1 dxe4 13. Qe2 Qe7 14. Bxf6 Qxf6 15. Rd7 Rfd8 16. Rfd1 Rxd7 17. Rxd7 Qf4 18. a4 h6) 12... cxd5?? { (0.62 → 2.74) Blunder. Qxd5 was best. } (12... Qxd5 13. Qe3 Nd7 14. Rad1 Qe6 15. f4 f6 16. Bh4 Rfe8 17. Qd3 Nb6 18. fxe5 Qxe5 19. Rfe1) 13. Bxf6 e4?? { (2.58 → 7.30) Blunder. Qxf6 was best. } (13... Qxf6 14. Qxd5 Rfe8 15. Rfe1 h6 16. a4 e4 17. Qd4 Qe7 18. Rad1 a5 19. b5 Rad8 20. Qe3) 14. Bxd8 exf3 15. gxf3?? { (7.69 → 0.67) Blunder. Bxc7 was best. } (15. Bxc7 Rfc8 16. Bd6 Rxc3 17. Rfd1 f5 18. Rxd5 Rd8 19. Rad1 Rc4 20. Bc5 Rxd5 21. Rxd5) 15... Raxd8?! { (0.67 → 1.40) Inaccuracy. Rfxd8 was best. } (15... Rfxd8 16. a4) 16. Rad1 c6 17. c4?! { (1.16 → 0.29) Inaccuracy. Rd4 was best. } (17. Rd4 a5) 17... dxc4 18. Rxd8 Rxd8 19. c3 Rc8 20. a4 c5?! { (0.25 → 1.03) Inaccuracy. a5 was best. } (20... a5 21. bxa5 Ra8 22. Re1 f6 23. Re6 Ra6 24. f4 Kf7 25. Re4 Rxa5 26. Rxc4 f5 27. Rxc6) 21. bxc5? { (1.03 → -0.15) Mistake. b5 was best. } (21. b5) 21... Rxc5 22. Rb1 Rg5+ 23. Kf1 h6 24. Rb8+ Kh7 25. Rb7 a6 26. Rxf7 Rh5 27. Kg2 Ra5 28. Rc7 Rxa4 29. Rc6 g5 30. Kg3 a5 31. Rc7+ Kg6 32. Rc6+ Kf7 33. Rc7+ Ke6 34. Rc6+ Kd7 35. Rc5 Ra3 36. f4?? { (0.14 → -1.94) Blunder. Rxc4 was best. } (36. Rxc4 Ra1 37. f4 a4 38. Rd4+ Ke6 39. Kf3 a3 40. Ra4 a2 41. Ra5 Kf6 42. c4 Ke6) 36... gxf4+?? { (-1.94 → -0.27) Blunder. Rxc3+ was best. } (36... Rxc3+ 37. Kg4 a4 38. Ra5 Ra3 39. f5 c3 40. f6 Ra2 41. f3 c2 42. Rc5 Rb2 43. Kh5) 37. Kxf4 a4 38. Rd5+? { (0.17 → -1.30) Mistake. Rxc4 was best. } (38. Rxc4 Rb3) 38... Kc6 39. Rd3?? { (-0.86 → -16.74) Blunder. Ra5 was best. } (39. Ra5 Kb6) 39... Ra2?? { (-16.74 → -2.79) Blunder. cxd3 was best. } (39... cxd3) 40. Rf3?? { (-2.79 → -5.80) Blunder. Rd4 was best. } (40. Rd4) 40... a3 41. h4 Rc2 42. Kg3 a2 43. Rf6+ Kb5 44. Rf5+ Ka4 45. Rf6 a1=Q?? { (-8.36 → -0.51) Blunder. Rxc3+ was best. } (45... Rxc3+) 46. Ra6+ Kb3 47. Rxa1 Kxc3 48. Ra3+ Kb4 49. Ra6 c3 50. Rxh6 Ra2 51. Rb6+ Ka3 52. Rc6 c2 53. Rc3+?? { (0.00 → -6.19) Blunder. h5 was best. } (53. h5 Kb3 54. Rb6+ Kc3 55. Rc6+ Kd2 56. Rd6+ Kc1 57. h6 Ra3+ 58. Kg4 Rc3 59. h7 Rc8) 53... Kb2?? { (-6.19 → 0.00) Blunder. Kb4 was best. } (53... Kb4 54. Rxc2 Rxc2 55. Kf4 Kc5 56. Kg3 Kd6 57. Kf3 Ke6 58. Kg4 Rxf2 59. Kg3 Rf7 60. Kh2) 54. Rxc2+ Kxc2 55. f4?? { (0.00 → -6.50) Blunder. Kg4 was best. } (55. Kg4 Kd3 56. h5 Ke4 57. h6 Ra1 58. Kg5 Ke5 59. h7 Rh1 60. Kg6 Ke6 61. Kg7 Rg1+) 55... Ra8 56. Kg4 Rg8+?? { (-5.62 → 0.00) Blunder. Kd3 was best. } (56... Kd3 57. Kg5 Ke4 58. h5 Kd5 59. Kg6 Ra6+ 60. Kg7 Ke6 61. h6 Ra7+ 62. Kg6 Ra1 63. f5+) 57. Kf5 Kd3 58. h5 Ke3 59. h6 Rh8 60. Kg5 Ke4 61. f5 Ke5 62. f6?? { (0.00 → -9.40) Blunder. Kg6 was best. } (62. Kg6 Rg8+ 63. Kf7 Ra8 64. f6 Ra7+ 65. Kg6 Ke6 66. h7 Ra8 67. Kg7 Rh8 68. Kxh8 Kf7) 62... Ke6?! { (-9.40 → -6.25) Inaccuracy. Rg8+ was best. } (62... Rg8+ 63. Kh4 Kxf6 64. h7 Rf8 65. Kg3 Kg5 66. Kh3 Kg6 67. Kh4 Kxh7 68. Kg5 Kg7 69. Kh5) 63. Kg6?? { (-6.25 → Mate in 24) Checkmate is now unavoidable. Kf4 was best. } (63. Kf4 Rxh6 64. Ke4 Rh4+ 65. Ke3 Kxf6 66. Kd3 Ke5 67. Ke2 Rf4 68. Kd3 Rf7 69. Kc4 Rc7+) 63... Rg8+?! { (Mate in 24 → -53.04) Lost forced checkmate sequence. Rg8+ was best. } (63... Rg8+ 64. Kh5 Kxf6 65. h7 Rf8 66. Kh4 Kg7 67. h8=Q+ Rxh8+ 68. Kg5 Rf8 69. Kh5 Rf5+ 70. Kg4) 64. Kh7?! { (-53.04 → Mate in 6) Checkmate is now unavoidable. Kh5 was best. } (64. Kh5 Rg1 65. h7 Kf7 66. h8=Q Rh1+ 67. Kg4 Rxh8 68. Kf3 Re8 69. Kg3 Kxf6 70. Kf2 Re5) 64... Kxf6?? { (Mate in 6 → 55.19) Lost forced checkmate sequence. Rg2 was best. } (64... Rg2 65. Kh8 Kxf6 66. Kh7 Kf7 67. Kh8 Rg8+ 68. Kh7 Rg6 69. Kh8 Rxh6#) 65. Kxg8 Kg6 66. h7 Kh6 67. h8=Q+ Kg6 68. Qg7+ Kh5 69. Kf7 Kh4 70. Qg6 Kh3 71. Qg5 Kh2 72. Qg4 Kh1 73. Kf6 Kh2 74. Kf5 Kh1 75. Kf4 Kh2 76. Kf3 Kh1 77. Qg2# { White wins by checkmate. } 1-0