Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/lqEjOoLj"]
[Date "2026.05.15"]
[White "Mark2"]
[Black "Eli4"]
[Result "1-0"]
[UTCDate "2026.05.15"]
[UTCTime "23:04:21"]
[WhiteElo "1287"]
[BlackElo "788"]
[WhiteRatingDiff "+1"]
[BlackRatingDiff "-2"]
[WhiteTitle "࿄"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "C50"]
[Opening "Four Knights Game: Italian Variation"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 e5 2. Nf3 Nf6 3. Nc3?! { (0.75 → 0.07) Inaccuracy. Nxe5 was best. } (3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4 Nf6 9. Nc3 O-O) 3... Nc6 4. Bc4 Bc5 { C50 Four Knights Game: Italian Variation } 5. d4?! { (0.16 → -0.65) Inaccuracy. d3 was best. } (5. d3 d6 6. a4 h6 7. O-O O-O 8. a5 Bg4 9. h3 Bxf3 10. Qxf3 Nd4 11. Qd1 c6) 5... d5?? { (-0.65 → 2.09) Blunder. exd4 was best. } (5... exd4 6. Na4) 6. dxc5 dxc4 7. Nd5?? { (1.63 → -3.44) Blunder. Qxd8+ was best. } (7. Qxd8+ Kxd8) 7... Nd4?? { (-3.44 → 3.69) Blunder. Nxe4 was best. } (7... Nxe4) 8. Nxe5 Nxd5?! { (3.43 → 4.46) Inaccuracy. Ne6 was best. } (8... Ne6) 9. Qh5?? { (4.46 → -7.73) Blunder. Qxd4 was best. } (9. Qxd4 Nb4) 9... g6 10. Qh6 Rg8?? { (-7.54 → -0.19) Blunder. Nxc2+ was best. } (10... Nxc2+) 11. Qxh7?? { (-0.19 → -4.82) Blunder. Bg5 was best. } (11. Bg5) 11... Nf6?? { (-4.82 → Mate in 1) Checkmate is now unavoidable. Nxc2+ was best. } (11... Nxc2+ 12. Kf1 Rf8 13. Qg7 Nxa1 14. Bh6 Qe7 15. exd5 Bf5 16. g4 Bd3+ 17. Kg2 Nc2 18. d6) 12. Qxf7# { White wins by checkmate. } 1-0