Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/46CogWhQ"]
[Date "2025.11.30"]
[White "Gideon"]
[Black "Rajaie"]
[Result "0-1"]
[UTCDate "2025.11.30"]
[UTCTime "18:17:51"]
[WhiteElo "1252"]
[BlackElo "1527"]
[WhiteRatingDiff "-5"]
[BlackRatingDiff "+3"]
[BlackTitle "NM🏒"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "C47"]
[Opening "Four Knights Game: Scotch Variation Accepted"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 { C47 Four Knights Game: Scotch Variation Accepted } 5. Nxd4 Bc5?! { (0.11 → 0.99) Inaccuracy. Bb4 was best. } (5... Bb4 6. Nxc6) 6. Bc4?? { (0.99 → -7.12) Blunder. Be3 was best. } (6. Be3) 6... Nxd4? { (-7.12 → -3.58) Mistake. Bxd4 was best. } (6... Bxd4 7. Nd5 h6 8. a4 O-O 9. O-O d6 10. Ra3 Nxe4 11. b4 Bf5 12. a5 Re8 13. b5) 7. Bg5?! { (-3.58 → -5.58) Inaccuracy. Be3 was best. } (7. Be3 d5) 7... d6 8. O-O Bg4?? { (-6.24 → -2.65) Blunder. Ne6 was best. } (8... Ne6 9. e5 dxe5 10. Qxd8+ Kxd8 11. Ne4 Nxg5 12. Nxc5 Ke7 13. Rae1 Ne6 14. Bxe6 Bxe6 15. f4) 9. Qe1?? { (-2.65 → -7.76) Blunder. Bxf6 was best. } (9. Bxf6 Qd7) 9... Nxc2 10. Qc1 Nxa1 11. Qxa1 h6 12. Bh4 g5 13. Bg3 Qd7 14. Nb5 c6 15. Na3 Bxa3 16. bxa3 d5?? { (-6.61 → 1.31) Blunder. Qd8 was best. } (16... Qd8 17. f4 O-O 18. fxg5 Nxe4 19. gxh6 Qg5 20. Bd3 f5 21. Bf4 Qg6 22. Qg7+ Qxg7 23. hxg7) 17. exd5?? { (1.31 → -2.76) Blunder. Qxf6 was best. } (17. Qxf6 Rg8 18. exd5 cxd5 19. Re1+ Be6 20. Bd3 Rc8 21. Qxh6 d4 22. h3 a6 23. Bh7 d3) 17... cxd5?? { (-2.76 → 1.00) Blunder. O-O was best. } (17... O-O 18. Qxf6 Qf5 19. Qxh6 cxd5 20. Bb5 Qg6 21. Qxg6+ fxg6 22. Re1 Bf5 23. h3 Rf6 24. Ba4) 18. Bd3?? { (1.00 → -5.32) Blunder. Re1+ was best. } (18. Re1+ Be6) 18... d4 19. Be5?! { (-4.89 → -6.39) Inaccuracy. Re1+ was best. } (19. Re1+ Be6) 19... Rd8?? { (-6.39 → 0.00) Blunder. O-O was best. } (19... O-O 20. Bxf6 Qd6 21. Bxd4 Rad8 22. Bg7 Qxd3 23. Bxh6 f6 24. Bxf8 Rxf8 25. h4 gxh4 26. Re1) 20. Bxf6 Rf8?? { (0.00 → 3.58) Blunder. O-O was best. } (20... O-O 21. Qb1 Rfe8 22. f3 Bh5 23. g4 Bxg4 24. fxg4 Qxg4+ 25. Kh1 Rd6 26. Qxb7 Qe6 27. Qf3) 21. Re1+? { (3.58 → 1.81) Mistake. Rb1 was best. } (21. Rb1 a6) 21... Be6 22. Bxd8?? { (1.23 → -0.55) Blunder. Qb2 was best. } (22. Qb2 a6 23. Qb4 Rc8 24. h3 Rc6 25. Bh7 Rd6 26. Be5 Rd5 27. Bg7 Rd6 28. Rd1 f5) 22... Qxd8 23. Bf5?! { (-0.12 → -0.69) Inaccuracy. Qc1 was best. } (23. Qc1 Qa5) 23... Qf6?? { (-0.69 → 1.85) Blunder. Qa5 was best. } (23... Qa5 24. Qb1) 24. Bxe6?? { (1.85 → -1.62) Blunder. Qb1 was best. } (24. Qb1 Qe7 25. Qb5+ Kd8 26. Qe5 Qxa3 27. Qb8+ Ke7 28. Qc7+ Kf6 29. Qe5+ Ke7 30. Qg7 Kd8) 24... fxe6 25. Qb1?? { (-1.58 → -4.51) Blunder. f3 was best. } (25. f3 Kd8 26. Qb1 Rf7 27. Qb3 Re7 28. Qc4 Rc7 29. Qb3 Ke7 30. Qb4+ Kf7 31. Qd6 Re7) 25... Qxf2+ 26. Kh1 Qf6? { (-4.62 → -2.93) Mistake. Qf5 was best. } (26... Qf5 27. Qc1 Kd7 28. Rd1 e5 29. Qc4 Qe4 30. Qa4+ Qc6 31. Qxa7 Ke6 32. Rg1 Rf7 33. Qb8) 27. Qxb7?? { (-2.93 → Mate in 2) Checkmate is now unavoidable. h3 was best. } (27. h3) 27... Qf1+ 28. Rxf1 Rxf1# { Black wins by checkmate. } 0-1