Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/m8yfWFNs"]
[Date "2026.04.28"]
[White "Scarlett"]
[Black "David3"]
[Result "0-1"]
[UTCDate "2026.04.28"]
[UTCTime "20:09:17"]
[WhiteElo "1298"]
[BlackElo "1482"]
[WhiteRatingDiff "-5"]
[BlackRatingDiff "+5"]
[WhiteTitle "WIM"]
[BlackTitle "IM🔱"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "B10"]
[Opening "Caro-Kann Defense"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 c6 { B10 Caro-Kann Defense } 2. Nf3 d5 3. exd5 cxd5 4. Nc3 Bf5 5. d4 e6 6. Bf4?! { (0.27 → -0.38) Inaccuracy. Bb5+ was best. } (6. Bb5+) 6... Nf6? { (-0.38 → 0.77) Mistake. Nc6 was best. } (6... Nc6 7. Bd3 Bg4 8. O-O Nf6 9. Be2 Bd6 10. Bxd6 Qxd6 11. Nb5 Qd8 12. Re1 Bf5 13. c3) 7. Ne5?! { (0.77 → 0.15) Inaccuracy. Nb5 was best. } (7. Nb5 Na6 8. c3 Be7 9. Ne5 h5 10. Bd3 Bxd3 11. Nxd3 Kf8 12. O-O Ne8 13. a4 Nb8) 7... Bd6?! { (0.15 → 0.99) Inaccuracy. h5 was best. } (7... h5 8. Bd3) 8. Bb5+?! { (0.99 → 0.23) Inaccuracy. Nb5 was best. } (8. Nb5 O-O) 8... Nbd7?? { (0.23 → 7.50) Blunder. Kf8 was best. } (8... Kf8 9. O-O) 9. Nxd7 Nxd7 10. Bxd6 a6 11. Bd3 Bxd3 12. Qxd3 Nf6 13. Be5 O-O 14. O-O-O g6 15. Qf3 Nh5 16. g4 Qg5+ 17. Rd2 Ng7 18. Bf6 Qh6 19. Bxg7 Qxg7 20. Qf4 Rac8 21. Qd6 Rfd8 22. Qb6 Rb8 23. Re1 Qh6 24. f4 Qxf4 25. h3 Kg7 26. b4?? { (7.46 → -3.30) Blunder. Nd1 was best. } (26. Nd1 Rd7 27. Qb3 Qxd2+ 28. Kxd2 Rc8 29. Qg3 b5 30. Qe5+ Kg8 31. Ne3 b4 32. g5 Rdc7) 26... Rdc8?? { (-3.30 → 3.23) Blunder. Qg3 was best. } (26... Qg3 27. Rf1 Qxc3 28. Rdf2 Rdc8 29. Rxf7+ Kh8 30. R7f2 Rc6 31. Qa7 Rbc8 32. Rf8+ Rxf8 33. Rxf8+) 27. Kb2?? { (3.23 → -11.53) Blunder. Nd1 was best. } (27. Nd1 Rc6 28. Qa5 Rbc8 29. Re3 Rc4 30. Qa3 b6 31. Qb2 a5 32. a3 axb4 33. axb4 Ra8) 27... Rc6 28. Qa5 Qxd2 29. Re2 Qxc3+ 30. Kc1 Qxh3 31. b5 axb5 32. Qxb5 Qh1+ 33. Kb2 Qh4 34. Qd3 Qxg4 35. Kb3 Rb6+ 36. Kc3 Rc8+ 37. Kd2 Qf4+ 38. Re3 Qh2+ 39. Re2 Qf4+ 40. Re3 Rb2 41. Qc3?! { (-75.73 → Mate in 7) Checkmate is now unavoidable. a3 was best. } (41. a3 Rcxc2+) 41... Qf2+ 42. Re2 Qf4+ 43. Re3 Rxc3?! { (Mate in 7 → -77.86) Lost forced checkmate sequence. Qh2+ was best. } (43... Qh2+ 44. Re2 Qxe2+ 45. Kxe2 Rxc3 46. Kd1 Rbxc2 47. a4 Ra2 48. a5 Rg3 49. a6 Rg1#) 44. Kxc3?! { (-77.86 → Mate in 8) Checkmate is now unavoidable. Kxc3 was best. } (44. Kxc3 Rxa2 45. Kb3 Qxe3+ 46. Kxa2 Qc3 47. Kb1 Qa3 48. c3 Qxc3 49. Ka2 h5 50. Kb1 h4) 44... Qxe3+ 45. Kxb2 Qxd4+ 46. Kc1 g5 47. a3 g4 48. Kb1 g3 49. Kc1 g2 50. c3 g1=Q+ 51. Kc2 Qdf2+ 52. Kd3 Qgg3# { Black wins by checkmate. } 0-1