Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/kBBf1uuP"]
[Date "2026.05.15"]
[White "Nathan4"]
[Black "Mark2"]
[Result "0-1"]
[UTCDate "2026.05.15"]
[UTCTime "23:38:38"]
[WhiteElo "1331"]
[BlackElo "1275"]
[WhiteRatingDiff "-13"]
[BlackRatingDiff "+12"]
[WhiteTitle "GM"]
[BlackTitle "࿄"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "C55"]
[Opening "Italian Game: Two Knights Defense, Modern Bishop's Opening"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 { C55 Italian Game: Two Knights Defense, Modern Bishop's Opening } g6? { (0.37 → 1.87) Mistake. Bc5 was best. } (4... Bc5 5. c3 a6 6. O-O d6 7. a4 h6 8. a5 Ba7 9. Be3 Bxe3 10. fxe3 Be6 11. Bxe6) 5. O-O? { (1.87 → 0.46) Mistake. Ng5 was best. } (5. Ng5 d5) 5... Bg7 6. Be3?! { (0.35 → -0.24) Inaccuracy. a4 was best. } (6. a4 d5 7. exd5 Nxd5 8. a5 h6 9. Nc3 Nxc3 10. bxc3 O-O 11. Nd2 Rb8 12. Re1 Re8) 6... O-O?! { (-0.24 → 0.43) Inaccuracy. d5 was best. } (6... d5 7. exd5 Nxd5 8. Bc5 b6 9. Ba3 Bb7 10. Re1 Qd7 11. Nc3 Nxc3 12. bxc3 f6 13. d4) 7. Nc3 Ng4 8. h3?? { (0.88 → -0.75) Blunder. Bg5 was best. } (8. Bg5 Bf6) 8... Nxe3 9. fxe3 Nb4?? { (-0.96 → 0.72) Blunder. Na5 was best. } (9... Na5) 10. a3 Qg5?? { (0.44 → 13.37) Blunder. Nc6 was best. } (10... Nc6 11. h4) 11. axb4 Qxe3+ 12. Rf2 d6 13. Nd5 Qh6 14. Nxc7 Rb8 15. c3 Qe3 16. Nd5 Qh6 17. d4 exd4 18. cxd4 b5 19. Bb3 Bb7 20. Ne7+ Kh8 21. e5 dxe5 22. Nxe5 Rbe8 23. Nxf7+ Rxf7 24. Bxf7?! { (5.62 → 4.23) Inaccuracy. Nxg6+ was best. } (24. Nxg6+ hxg6 25. Rxf7 Be4 26. Qg4 Bxd4+ 27. Kh1 Qh5 28. Rd1 Qxg4 29. hxg4 Bxb2 30. Rxa7 g5) 24... Rxe7 25. Bb3?? { (4.10 → -0.43) Blunder. d5 was best. } (25. d5) 25... Qg5?? { (-0.43 → 4.61) Blunder. Qe3 was best. } (25... Qe3) 26. Rxa7?? { (4.61 → 0.00) Blunder. d5 was best. } (26. d5 Qh4 27. Qf3 Qxb4 28. Kh1 a5 29. Re2 Rxe2 30. Qxe2 Bf6 31. Rf1 Kg7 32. Qe6 Qe7) 26... Rf7?? { (0.00 → 10.96) Blunder. Qe3 was best. } (26... Qe3 27. Rxb7 Rxb7 28. Qf3 Re7 29. Qxe3 Rxe3 30. Rf3 Re2 31. Kf1 Rxb2 32. g4 Bxd4 33. g5) 27. Rxf7?? { (10.96 → Mate in 1) Checkmate is now unavoidable. Bxf7 was best. } (27. Bxf7) 27... Qxg2# { Black wins by checkmate. } 0-1