Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/Z8tTTPRV"]
[Date "2025.09.20"]
[White "Ivan"]
[Black "Rajaie"]
[Result "0-1"]
[UTCDate "2025.09.20"]
[UTCTime "17:26:53"]
[WhiteElo "1385"]
[BlackElo "1510"]
[WhiteRatingDiff "-123"]
[BlackRatingDiff "+5"]
[WhiteTitle "NM"]
[BlackTitle "NM🏒"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "D01"]
[Opening "Richter-Veresov Attack"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. d4 d5 2. Nc3?! { (0.38 → -0.21) Inaccuracy. c4 was best. } (2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Nf3 h6 6. Bf4 c6 7. Qc2 Bd6 8. Bxd6 Qxd6) 2... Nf6 3. Bg5 { D01 Richter-Veresov Attack } Nc6 4. Nf3 Bf5 5. e3 e6 6. Bd3 Bxd3 7. Qxd3 Bb4 8. O-O h6 9. Bxf6 Qxf6 10. Qb5 a6?? { (0.31 → 4.89) Blunder. O-O-O was best. } (10... O-O-O) 11. Qxb7 Kd7 12. e4?? { (5.29 → -2.80) Blunder. Ne5+ was best. } (12. Ne5+) 12... Rhb8?! { (-2.80 → -1.82) Inaccuracy. Bxc3 was best. } (12... Bxc3) 13. e5?? { (-1.82 → -6.52) Blunder. exd5 was best. } (13. exd5 Rxb7 14. dxc6+ Kxc6 15. Ne5+ Qxe5 16. dxe5 Bxc3 17. bxc3 Rb2 18. Rfe1 Rxc2 19. Re4 Rxc3) 13... Qg6 14. Nh4 Qxc2 15. Rfc1 Qxb2 16. Rab1 Qa3 17. Rb3? { (-8.39 → Mate in 2) Checkmate is now unavoidable. Qxa8 was best. } (17. Qxa8 Rxa8 18. Ne2 Qxa2 19. Kf1 Qxb1 20. Rxb1 a5 21. Nf3 a4 22. Ne1 a3 23. Ra1 Bxe1) 17... Qxc1+ 18. Nd1 Qxd1# { Black wins by checkmate. } 0-1