Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/67OttMC6"]
[Date "2026.08.21"]
[White "RoWaN"]
[Black "Trekker"]
[Result "1-0"]
[UTCDate "2026.08.21"]
[UTCTime "20:03:49"]
[WhiteElo "1654"]
[BlackElo "1725"]
[WhiteRatingDiff "+17"]
[BlackRatingDiff "-13"]
[WhiteTitle "🎼"]
[BlackTitle "NM🎅"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "B02"]
[Opening "Alekhine Defense: Normal Variation"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 Nf6 2. e5 Nd5 { B02 Alekhine Defense: Normal Variation } 3. Bc4 Nb6 4. Bb3 g6?! { (0.28 → 1.02) Inaccuracy. c5 was best. } (4... c5 5. d3) 5. Nf3 Bg7 6. d4 d6 7. O-O O-O 8. Re1 Bg4?! { (0.45 → 1.13) Inaccuracy. dxe5 was best. } (8... dxe5 9. Nxe5 Bxe5 10. dxe5 Qxd1 11. Rxd1 Nc6 12. Nc3 Be6 13. Bxe6 fxe6 14. Bg5 Kg7 15. Ne4) 9. Nc3?? { (1.13 → -1.20) Blunder. e6 was best. } (9. e6 f5 10. c3 c5 11. a4 c4 12. Bc2 Nc6 13. h3 Bh5 14. d5 Ne5 15. a5 Nc8) 9... dxe5 10. d5 Bxf3 11. Qxf3 e6?? { (-0.86 → 4.74) Blunder. N8d7 was best. } (11... N8d7) 12. dxe6 c5?! { (4.00 → 6.24) Inaccuracy. Nc6 was best. } (12... Nc6 13. exf7+) 13. exf7+ Kh8 14. a3? { (6.00 → 3.08) Mistake. Qxb7 was best. } (14. Qxb7 N8d7 15. Rd1 Rb8 16. Qxa7 c4 17. Bxc4 Nxc4 18. Rxd7 Qf6 19. Rc7 Nd6 20. Be3 Rxb2) 14... Nc6 15. Be3? { (2.99 → 1.43) Mistake. Ba2 was best. } (15. Ba2 c4 16. Ne4 Nd4 17. Qd1 Qd5 18. c3 Nb3 19. Qxd5 Nxd5 20. Bxb3 cxb3 21. Nc5 Rxf7) 15... Qe7?? { (1.43 → 4.08) Blunder. c4 was best. } (15... c4 16. Bxb6) 16. Nd5 Qxf7?? { (3.36 → 8.10) Blunder. Nxd5 was best. } (16... Nxd5 17. Bxd5) 17. Qxf7 Rxf7 18. Nxb6 Rff8 19. Nxa8 Rxa8 20. Bxc5 b6 21. Bd5 Rc8 22. Bxc6 bxc5 23. Be4 Rb8 24. b3 Rd8 25. Red1 Rd4 26. f3 Kg8 27. Rxd4 exd4 28. Rd1 Kf7 29. Bd5+ Ke7 30. Bc4 Kd6 31. a4 a5 32. Kf2 Ke5 33. Re1+ Kf5 34. g3 Bf6 35. h3 h5 36. Re4 Kg5 37. h4+ Kh6 38. Rf4 Be5 39. Re4 Bd6 40. f4 Bc7 41. Kf3 Kg7 42. Re7+ Kf6?! { (64.23 → Mate in 1) Checkmate is now unavoidable. Kf8 was best. } (42... Kf8 43. Rxc7 Ke8 44. Rxc5 Ke7 45. Ke4 Ke8 46. Kxd4 Kf8 47. Rxa5 Kg7 48. Ra6 Kh7 49. Bf7) 43. Rxc7 Kf5 44. Rxc5+ Kf6 45. Rxa5 Kg7 46. Rd5?! { (Mate in 8 → 75.93) Lost forced checkmate sequence. Ra7+ was best. } (46. Ra7+ Kf8 47. Rf7+ Ke8 48. a5 d3 49. cxd3 Kd8 50. a6 g5 51. fxg5 Kc8 52. a7 Kd8) 46... Kh6?! { (75.93 → Mate in 3) Checkmate is now unavoidable. Kf8 was best. } (46... Kf8 47. Rxd4 Ke7 48. Rd3 Ke8 49. Rd6 Ke7 50. Rxg6 Kd8 51. g4 Kc8 52. gxh5 Kb8 53. h6) 47. Rxd4 Kg7 48. a5 Kf6 49. a6 Ke7 50. a7 Kf6 51. a8=R Kg7 52. Ra5 Kf6 53. Rd6+ Ke7 54. Rb6 Kd7 55. Ra7+ Kc8 56. Rxg6 Kb8 57. Rh7 Kc8 58. Rg8# { White wins by checkmate. } 1-0