Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/7uCwuyIq"]
[Date "2026.03.23"]
[White "Cohen"]
[Black "Sadie"]
[Result "0-1"]
[UTCDate "2026.03.23"]
[UTCTime "23:06:08"]
[WhiteElo "1203"]
[BlackElo "1374"]
[WhiteRatingDiff "-16"]
[BlackRatingDiff "+11"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "C46"]
[Opening "Three Knights Opening"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4?! { (0.18 → 0.88) Inaccuracy. Nf6 was best. } { C46 Three Knights Opening } (3... Nf6 4. Bb5 Nd4 5. Nxd4 exd4 6. e5 dxc3 7. exf6 Qxf6 8. dxc3 Qe5+ 9. Qe2 Qxe2+ 10. Kxe2) 4. d4?! { (0.88 → 0.12) Inaccuracy. Nd5 was best. } (4. Nd5 Nf6 5. c3 Be7 6. Bd3 d6 7. O-O Bg4 8. Bc2 Bh5 9. Re1 O-O 10. h3 Re8) 4... exd4 5. Nxd4 Nxd4?? { (0.05 → 2.22) Blunder. Nf6 was best. } (5... Nf6) 6. Qxd4 Bxc3+ 7. Qxc3 Ne7?? { (2.33 → 5.10) Blunder. Nf6 was best. } (7... Nf6 8. e5) 8. Bg5?? { (5.10 → 2.02) Blunder. Bh6 was best. } (8. Bh6 Rg8 9. Bxg7 d6 10. O-O-O Qd7 11. Bf6 Qc6 12. Qxc6+ Nxc6 13. h3 Rg6 14. Bc3 Bd7) 8... O-O 9. Qb4?! { (1.73 → 1.08) Inaccuracy. O-O-O was best. } (9. O-O-O d6) 9... d6 10. e5?? { (1.09 → -1.07) Blunder. O-O-O was best. } (10. O-O-O a5 11. Qc3 Be6 12. Bb5 c6 13. Be2 d5 14. Qg3 f6 15. Bf4 Qc8 16. f3 Re8) 10... Nd5?? { (-1.07 → 1.69) Blunder. h6 was best. } (10... h6 11. Bh4) 11. exd6?? { (1.69 → -11.19) Blunder. Qd2 was best. } (11. Qd2 Ne7) 11... Nxb4 12. Bxd8 Rxd8 13. a3 cxd6?? { (-11.31 → 0.86) Blunder. Nxc2+ was best. } (13... Nxc2+) 14. axb4 Re8+ 15. Be2?! { (1.08 → 0.08) Inaccuracy. Kd2 was best. } (15. Kd2 Bf5) 15... b5?? { (0.08 → 2.77) Blunder. Bf5 was best. } (15... Bf5 16. Kd2) 16. O-O?? { (2.77 → -6.70) Blunder. Kd2 was best. } (16. Kd2 Re5) 16... a6?? { (-6.70 → 4.64) Blunder. Rxe2 was best. } (16... Rxe2) 17. Rfe1?? { (4.64 → 0.86) Blunder. Bxb5 was best. } (17. Bxb5) 17... Bg4?? { (0.86 → 7.71) Blunder. Bb7 was best. } (17... Bb7 18. f3 Re6 19. Kf2 Rae8 20. Bd3 g6 21. c3 Kg7 22. Bc2 Kf6 23. Bb3 d5 24. Kf1) 18. Kf1?? { (7.71 → 0.53) Blunder. Bxg4 was best. } (18. Bxg4 Rxe1+) 18... Bxe2+ 19. Rxe2 Rxe2?! { (0.62 → 1.35) Inaccuracy. Re6 was best. } (19... Re6) 20. Kxe2 Re8+? { (1.81 → 3.77) Mistake. Kf8 was best. } (20... Kf8 21. Kd3) 21. Kd1? { (3.77 → 1.83) Mistake. Kd2 was best. } (21. Kd2 Kf8) 21... f5?? { (1.83 → 5.94) Blunder. Ra8 was best. } (21... Ra8 22. c4) 22. Rxa6 d5 23. Kd2 g5 24. Ra5 Rd8 25. Rxb5 d4 26. Rxf5 g4 27. Rg5+ Kf7 28. Rxg4 h5 29. Rh4 Kg6 30. g4 Kg5 31. Rh3 hxg4 32. Rg3 Kf4 33. h3 Rh8 34. hxg4 Rh2 35. Rd3 Rxf2+ 36. Kc1 Ke4 37. g5 Rf1+ 38. Kd2? { (7.98 → 4.33) Mistake. Rd1 was best. } (38. Rd1 Rf5 39. Rg1 Ke3 40. g6 Kf2 41. Rg4 Ke3 42. b3 d3 43. Rg3+ Kf4 44. Rxd3 Rg5) 38... Rf2+?! { (4.33 → 5.70) Inaccuracy. Rg1 was best. } (38... Rg1 39. b3) 39. Ke1?? { (5.70 → 0.07) Blunder. Kc1 was best. } (39. Kc1 Rg2 40. Kb1 Kd5 41. g6 Ke4 42. g7 Rxg7 43. Ka2 Rc7 44. Kb3 Rh7 45. b5 Kd5) 39... Rxc2 40. g6?? { (0.27 → -60.32) Blunder. Rg3 was best. } (40. Rg3 Kf4 41. Kd1 d3 42. Rxd3 Rxb2 43. Rd4+ Kxg5 44. Kc1 Rg2 45. Rd2 Rg4 46. Rb2 Kf6) 40... Rxb2?? { (-60.32 → 7.12) Blunder. Kxd3 was best. } (40... Kxd3 41. Kf1 Rc6 42. g7 Rg6 43. g8=Q Rxg8 44. Ke1 Rg1+ 45. Kf2 Rg6 46. Kf1 Rb6 47. Kf2) 41. Rg3 Rxb4 42. g7 Rb8 43. Kf2?? { (53.08 → 0.00) Blunder. g8=Q was best. } (43. g8=Q Rxg8 44. Rxg8 Kd5 45. Rg6 Kc4 46. Rc6+ Kb5 47. Rh6 Kc4 48. Kd2 Kc5 49. Ke2 Kc4) 43... Rb2+?? { (0.00 → 53.29) Blunder. Rg8 was best. } (43... Rg8 44. Ke2 Ke5 45. Kd3 Kf6 46. Kxd4 Rxg7 47. Rf3+ Ke6 48. Ra3 Kf5 49. Ra8 Re7 50. Rh8) 44. Kg1 Rb8 45. Rg6?? { (53.21 → 0.00) Blunder. g8=Q was best. } (45. g8=Q Rxg8 46. Rxg8 Ke3 47. Kf1 Kd2 48. Rc8 d3 49. Rd8 Kc2 50. Ke1 d2+ 51. Rxd2+ Kc3) 45... Rg8 46. Kf1 d3 47. Re6+ Kd4 48. Rd6+ Ke4 49. Rd7 Ke3 50. Ke1 d2+ 51. Kd1 Rc8 52. Re7+ Kd3 53. Rd7+ Ke3 54. Rd5?? { (0.00 → Mate in 1) Checkmate is now unavoidable. Rxd2 was best. } (54. Rxd2 Kf3 55. Rd7 Rg8 56. Kd2 Kf4 57. Rc7 Kg4 58. Kd3 Kh5 59. Kd4 Kg6 60. Rc1 Rxg7) 54... Rc1# { Black wins by checkmate. } 0-1