Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/JJJ90Xhl"]
[Date "2026.03.30"]
[White "colton1"]
[Black "KiRiLL"]
[Result "1-0"]
[UTCDate "2026.03.30"]
[UTCTime "15:17:38"]
[WhiteElo "1564"]
[BlackElo "1353"]
[WhiteRatingDiff "+5"]
[BlackRatingDiff "-5"]
[WhiteTitle "IMš¤"]
[BlackTitle "GM"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "D06"]
[Opening "Queen's Gambit Declined: Marshall Defense"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. d4 d5 2. c4 Nf6 { D06 Queen's Gambit Declined: Marshall Defense } 3. c5?? { (0.88 ā -0.89) Blunder. cxd5 was best. } (3. cxd5 g6 4. Nf3 Bg7 5. Qa4+ c6 6. dxc6 Nxc6 7. Nc3 Bf5 8. e3 a6 9. Ne5 O-O) 3... Nc6?! { (-0.89 ā -0.21) Inaccuracy. e5 was best. } (3... e5 4. dxe5 Ne4 5. e3 Bxc5 6. Nc3 Nc6 7. Qxd5 Nxc3 8. Qxd8+ Kxd8 9. bxc3 Nxe5 10. Nf3) 4. Nf3 e5 5. dxe5 Nxe5?? { (-0.50 ā 4.45) Blunder. Ne4 was best. } (5... Ne4 6. Be3 Bxc5 7. Bxc5 Nxc5 8. Nc3 O-O 9. e3 Bg4 10. Nxd5 Nxe5 11. Be2 Nxf3+ 12. gxf3) 6. Nxe5 Qe7?! { (4.34 ā 6.26) Inaccuracy. Bxc5 was best. } (6... Bxc5 7. e3 c6 8. Nf3 Qe7 9. Be2 Bg4 10. Nd4 h5 11. Nc3 O-O-O 12. h3 Bxe2 13. Ncxe2) 7. Bf4? { (6.26 ā 3.86) Mistake. Nf3 was best. } (7. Nf3 Qxc5) 7... Qxc5?! { (3.86 ā 5.82) Inaccuracy. g5 was best. } (7... g5) 8. e3?! { (5.82 ā 4.56) Inaccuracy. Nd2 was best. } (8. Nd2) 8... Bf5?! { (4.56 ā 7.22) Inaccuracy. g5 was best. } (8... g5) 9. Nc3 O-O-O 10. Nxf7 Re8 11. Nxh8 Be6 12. Be5 Ne4 13. Nxe4 dxe4 14. a3?! { (8.74 ā 6.06) Inaccuracy. Bc3 was best. } (14. Bc3 Bd6) 14... Qxe5 15. Qa4 Qxb2?? { (6.49 ā Mate in 1) Checkmate is now unavoidable. c6 was best. } (15... c6 16. Bc4) 16. Rd1?? { (Mate in 1 ā -6.48) Lost forced checkmate sequence. Qxe8# was best. } (16. Qxe8#) 16... Bxa3?? { (-6.48 ā Mate in 1) Checkmate is now unavoidable. Qc3+ was best. } (16... Qc3+) 17. Qxe8# { White wins by checkmate. } 1-0