Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/sgibZY0i"]
[Date "2026.01.05"]
[White "KiRiLL"]
[Black "Garyd"]
[Result "0-1"]
[UTCDate "2026.01.05"]
[UTCTime "16:33:44"]
[WhiteElo "1387"]
[BlackElo "1610"]
[WhiteRatingDiff "-3"]
[BlackRatingDiff "+3"]
[WhiteTitle "GM"]
[BlackTitle "GM🙌"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "C45"]
[Opening "Scotch Game"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 { C45 Scotch Game } Nxd4?! { (0.09 → 0.99) Inaccuracy. Nf6 was best. } (4... Nf6) 5. Qxd4 Qf6 6. Qxf6 Nxf6 7. Nc3 Bb4 8. Bd2 Bxc3?! { (0.35 → 1.34) Inaccuracy. d6 was best. } (8... d6 9. a3 Bc5 10. f3 Be6 11. Na4 Bd4 12. c3 Be5 13. f4 Bb3 14. fxe5 Nxe4 15. exd6) 9. Bxc3 O-O 10. Bc4?? { (1.27 → -0.75) Blunder. f3 was best. } (10. f3 d6) 10... Nxe4 11. O-O-O?? { (-1.08 → -6.53) Blunder. Bd4 was best. } (11. Bd4 Nd6 12. Bd3 Re8+ 13. Kd1 a5 14. Re1 Rxe1+ 15. Kxe1 b6 16. Be5 Ne8 17. f3 d6) 11... Nxf2 12. Rdf1 Nxh1 13. Rxh1 Re8 14. Rf1 c6?? { (-6.63 → 8.71) Blunder. Re7 was best. } (14... Re7 15. Be1 Kf8 16. g4 d6 17. Bh4 f6 18. g5 Re4 19. Bg3 Rxc4 20. gxf6 g6 21. Rf4) 15. Bxf7+ Kf8 16. Bxe8+?? { (8.90 → 2.54) Blunder. Bh5+ was best. } (16. Bh5+ Kg8 17. Bxe8 d5 18. Bf7+ Kh8 19. Bxd5 Bg4 20. Rf7 cxd5 21. Rxg7 Rc8 22. Bd4 h5) 16... Kxe8 17. Bxg7 Ke7 18. Bf8+ Ke8?? { (1.67 → Mate in 2) Checkmate is now unavoidable. Ke6 was best. } (18... Ke6) 19. Bc5?? { (Mate in 2 → 2.46) Lost forced checkmate sequence. Bd6 was best. } (19. Bd6 c5 20. Rf8#) 19... Kd8?? { (2.46 → Mate in 2) Checkmate is now unavoidable. d5 was best. } (19... d5) 20. Rf8+?? { (Mate in 2 → 3.22) Lost forced checkmate sequence. Bd6 was best. } (20. Bd6 c5 21. Rf8#) 20... Kc7 21. Be3 b6 22. Bf4+ Kb7 23. Kd2 d5 24. Rf7+ Ka6 25. Rxh7 Bf5 26. Rf7 Bg6 27. Rf6 Be8?! { (3.85 → 5.79) Inaccuracy. Rg8 was best. } (27... Rg8 28. g4) 28. Re6? { (5.79 → 3.09) Mistake. g4 was best. } (28. g4 c5) 28... Bd7 29. Rd6 Rd8?! { (4.20 → 6.97) Inaccuracy. Bg4 was best. } (29... Bg4 30. Rxc6) 30. Bg5?! { (6.97 → 4.37) Inaccuracy. g3 was best. } (30. g3) 30... Rg8 31. Rxd7 Rxg5 32. g3 Rf5 33. Rd6?? { (5.39 → 1.44) Blunder. Ke2 was best. } (33. Ke2 b5) 33... c5?? { (1.44 → 4.53) Blunder. Rf2+ was best. } (33... Rf2+ 34. Ke3) 34. Re6 d4?! { (3.75 → 5.88) Inaccuracy. Kb5 was best. } (34... Kb5 35. Re2) 35. c3?! { (5.88 → 4.20) Inaccuracy. Re2 was best. } (35. Re2) 35... Rh5 36. cxd4 cxd4? { (3.75 → 6.50) Mistake. Rxh2+ was best. } (36... Rxh2+ 37. Re2) 37. Re2 Ra5 38. Kd3 Rxa2 39. Kxd4 Ra4+ 40. Kc3?! { (7.15 → 4.89) Inaccuracy. Ke5 was best. } (40. Ke5 Kb5 41. h4 a5 42. Kf5 Kc4 43. h5 Kd3 44. Rh2 Ke3 45. h6 Kf3 46. h7 Rc4) 40... Ra5?! { (4.89 → 6.79) Inaccuracy. Rg4 was best. } (40... Rg4 41. Kd3) 41. b4? { (6.79 → 3.66) Mistake. Kd3 was best. } (41. Kd3) 41... Ra3+?! { (3.66 → 5.50) Inaccuracy. Rg5 was best. } (41... Rg5 42. Re4) 42. Kc4 Ra1 43. h4? { (5.41 → 3.37) Mistake. Rg2 was best. } (43. Rg2) 43... Rg1? { (3.37 → 5.90) Mistake. Rc1+ was best. } (43... Rc1+ 44. Kd5) 44. Re3? { (5.90 → 3.54) Mistake. b5+ was best. } (44. b5+ Kb7) 44... b5+? { (3.54 → 5.86) Mistake. Rc1+ was best. } (44... Rc1+ 45. Rc3) 45. Kc5 Rc1+ 46. Kd4?! { (6.16 → 3.94) Inaccuracy. Kd5 was best. } (46. Kd5) 46... Rc4+ 47. Kd5?? { (3.84 → 0.45) Blunder. Ke5 was best. } (47. Ke5 Rxb4) 47... Rxb4 48. Ra3+ Kb6 49. h5 Rc4 50. Ra1? { (0.00 → -1.48) Mistake. g4 was best. } (50. g4 Rxg4 51. Rh3 Rg7 52. h6 Rh7 53. Kd4 Kc6 54. Rc3+ Kb6) 50... Rc5+ 51. Kd6?? { (-1.35 → -5.87) Blunder. Ke4 was best. } (51. Ke4 Rxh5 52. g4 Rg5 53. Kf4 Rg8 54. Rg1 a5 55. g5 b4 56. Ke3 Rd8 57. g6 a4) 51... Rxh5 52. Rg1 Rg5 53. Ke6 Ka5?? { (-5.76 → -0.91) Blunder. a5 was best. } (53... a5 54. Kf6 Rg8 55. g4 b4 56. g5 b3 57. Kf7 Rb8 58. Rb1 a4 59. g6 Kc5 60. g7) 54. Kf6?? { (-0.91 → -3.87) Blunder. g4 was best. } (54. g4 b4 55. Kf6 Rg8 56. g5 Kb6 57. g6 a5 58. Kf7 Ra8 59. g7 b3 60. Re1 a4) 54... Rg8?? { (-3.87 → -0.75) Blunder. Rg4 was best. } (54... Rg4 55. Kf5 Rg8 56. g4 b4 57. Ke4 b3 58. Ra1+ Kb4 59. Rxa7 Rxg4+ 60. Kd3 Rg1 61. Kd2) 55. g4 b4 56. g5 Rb8?! { (-0.88 → 0.00) Inaccuracy. Kb5 was best. } (56... Kb5 57. Kf7 Rb8 58. g6 b3 59. g7 Kb4 60. Rg4+ Ka3 61. Rg3 a5 62. Re3 a4 63. Re8) 57. Ra1+? { (0.00 → -1.22) Mistake. g6 was best. } (57. g6 b3 58. g7 Kb4 59. g8=Q Rxg8 60. Rxg8 a5 61. Ke5 b2 62. Kd4 Kb3 63. Rb8+ Kc2) 57... Kb6 58. Rb1?? { (-1.09 → -3.55) Blunder. g6 was best. } (58. g6 a5 59. g7 Rg8 60. Kf7 Rxg7+ 61. Kxg7 Kb5 62. Kf6 a4 63. Ke5 b3 64. Kd4 Kb4) 58... a5 59. g6 Rc8? { (-4.23 → -2.35) Mistake. Kb5 was best. } (59... Kb5) 60. g7 Rc6+ 61. Kf7 Rc7+ 62. Kg8?? { (-1.26 → -4.62) Blunder. Kg6 was best. } (62. Kg6 Rxg7+ 63. Kxg7 Kb5 64. Kf6 a4 65. Ke5 b3 66. Kd4 Kb4 67. Rh1 b2 68. Rh7 Kb3) 62... Rc8+?? { (-4.62 → -0.65) Blunder. Kb5 was best. } (62... Kb5) 63. Kh7?? { (-0.65 → -3.53) Blunder. Kf7 was best. } (63. Kf7 Kb5) 63... Rc7?? { (-3.53 → -0.12) Blunder. Kb5 was best. } (63... Kb5) 64. Rc1?? { (-0.12 → -78.32) Blunder. Kg6 was best. } (64. Kg6) 64... Rxc1 65. g8=Q Rh1+ 66. Kg7 Rg1+ { White resigns. } 0-1