Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/cGIXqAc5"]
[Date "2026.03.07"]
[White "Mark2"]
[Black "Matthew11"]
[Result "1-0"]
[UTCDate "2026.03.07"]
[UTCTime "00:17:09"]
[WhiteElo "1200"]
[BlackElo "1285"]
[WhiteRatingDiff "+15"]
[BlackRatingDiff "-14"]
[WhiteTitle "࿄"]
[BlackTitle "GM🤪"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "C46"]
[Opening "Four Knights Game"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 { C46 Four Knights Game } 4. g3 Bc5 5. Bg2 Ng4? { (-0.25 → 0.77) Mistake. d6 was best. } (5... d6 6. d3 a5 7. Na4 Ba7 8. Nc3 a4 9. O-O Bc5 10. h3 h6 11. Nb5 Bd7 12. c3) 6. O-O Nf6?? { (0.47 → 2.56) Blunder. d6 was best. } (6... d6 7. Nd5 f5 8. exf5 Bxf5 9. d4 Nxd4 10. Nh4 Be6 11. b4 Bb6 12. c3 Nc6 13. h3) 7. Nd5?? { (2.56 → 0.41) Blunder. Nxe5 was best. } (7. Nxe5 Nxe5) 7... Nxe4?? { (0.41 → 4.00) Blunder. d6 was best. } (7... d6 8. c3 Nxd5 9. exd5 Ne7 10. d4 exd4 11. b4 Bb6 12. Nxd4 O-O 13. a4 a5 14. Nb3) 8. b3?? { (4.00 → 0.39) Blunder. d4 was best. } (8. d4 Nxd4 9. Nxd4 Bxd4 10. Qg4 Kf8 11. Qxe4 c6 12. Ne3 d5 13. Qd3 h5 14. c4 dxc4) 8... O-O 9. Bb2 Nf6 10. d4?? { (0.64 → -1.61) Blunder. Nxe5 was best. } (10. Nxe5 Nxd5) 10... Nxd5?? { (-1.61 → 2.64) Blunder. exd4 was best. } (10... exd4) 11. dxc5 Nf6 12. Ng5?? { (2.74 → -0.44) Blunder. Nxe5 was best. } (12. Nxe5 Nxe5 13. Bxe5 a5 14. Re1 Ra6 15. Qd2 a4 16. Rad1 axb3 17. cxb3 Re6 18. Bh3 Rc6) 12... Ng4?? { (-0.44 → 6.03) Blunder. Qe7 was best. } (12... Qe7 13. Ba3) 13. Qd3?? { (6.03 → -5.85) Blunder. Qxg4 was best. } (13. Qxg4) 13... Qxg5 14. Bxe5?! { (-5.83 → -9.76) Inaccuracy. Rae1 was best. } (14. Rae1 d6) 14... Ncxe5 15. Qd5 c6 16. Qd6 Re8 17. Rae1 Re6 18. Qd3 Nxd3 19. Rxe6 dxe6 20. Rd1 Ndxf2 21. h4 Qe3?? { (-20.71 → Mate in 1) Checkmate is now unavoidable. Qf6 was best. } (21... Qf6 22. Rd2 g6 23. h5 Qa1+ 24. Bf1 Nh3+ 25. Kg2 Ne3+ 26. Kh2 Qxf1 27. g4 Nxg4+ 28. Kg3) 22. Rd8# { White wins by checkmate. } 1-0