Puzzles (3 cohencoins award for each match):
FEN
[Event " MrCohenOS Arena"]
[Site "https://cohenchessclub.com/6J0bBbDC"]
[Date "2025.11.22"]
[White "Eitan1"]
[Black "Nathan4"]
[Result "1-0"]
[UTCDate "2025.11.22"]
[UTCTime "00:25:33"]
[WhiteElo "1197"]
[BlackElo "1322"]
[WhiteRatingDiff "+13"]
[BlackRatingDiff "-15"]
[BlackTitle "GM"]
[Variant "Standard"]
[TimeControl "420+2"]
[ECO "A00"]
[Opening "Van Geet Opening: Napoleon Attack"]
[Termination "Normal"]
[Annotator "cohenchessclub.com"]
1. Nc3 e5 2. Nf3 Nc6 3. d4 { A00 Van Geet Opening: Napoleon Attack } exd4 4. Nxd4 Bb4?! { (0.23 → 1.08) Inaccuracy. Nf6 was best. } (4... Nf6) 5. Nxc6 bxc6?! { (1.06 → 1.83) Inaccuracy. Bxc3+ was best. } (5... Bxc3+ 6. bxc3) 6. a3?? { (1.83 → 0.11) Blunder. Qd4 was best. } (6. Qd4 Bxc3+) 6... Ba6?? { (0.11 → 10.20) Blunder. Bxc3+ was best. } (6... Bxc3+ 7. bxc3) 7. axb4 Qf6 8. e4 Bxf1 9. Kxf1 d6 10. Ne2 c5 11. bxc5 dxc5 12. Ng3 Ne7 13. Nh5 Qh4 14. Nxg7+ Kf8 15. g3? { (10.20 → 4.61) Mistake. Nh5 was best. } (15. Nh5 h6 16. Qf3 Nc6 17. Be3 Nd4 18. Bxd4 cxd4 19. Nf4 Kg7 20. g3 Qe7 21. e5 Qxe5) 15... Qxe4 16. Nh5?? { (5.04 → -0.55) Blunder. f3 was best. } (16. f3) 16... Qc4+?? { (-0.55 → 10.27) Blunder. Qxh1+ was best. } (16... Qxh1+ 17. Ke2) 17. Kg1 Ke8?! { (10.25 → Mate in 2) Checkmate is now unavoidable. Nd5 was best. } (17... Nd5 18. Bh6+ Ke7 19. Qf3 Rae8 20. Nf4 Nxf4 21. Bxf4 Qxc2 22. Rxa7 Kf6 23. Kg2 Qe4 24. Qxe4) 18. b3? { (Mate in 2 → 9.38) Lost forced checkmate sequence. Nf6+ was best. } (18. Nf6+ Kf8 19. Bh6#) 18... Rd8? { (9.38 → Mate in 2) Checkmate is now unavoidable. Qd4 was best. } (18... Qd4 19. Be3 Qxd1+ 20. Rxd1 f6 21. Bxc5 Nc6 22. Kg2 Rd8 23. Rxd8+ Kxd8 24. Ba3) 19. Qf3?! { (Mate in 2 → 13.86) Lost forced checkmate sequence. Nf6+ was best. } (19. Nf6+ Kf8 20. Bh6#) 19... Rd1+ 20. Qxd1 Qe6 21. Bb2 Rg8 22. Nf4 Qb6 23. Qd2 Nf5 24. Rd1 c6?! { (13.87 → Mate in 3) Checkmate is now unavoidable. Nd4 was best. } (24... Nd4) 25. Qd8+? { (Mate in 3 → 8.37) Lost forced checkmate sequence. Qd7+ was best. } (25. Qd7+ Kf8 26. Qc8+ Ke7 27. Rd7#) 25... Qxd8 26. Rxd8+ Kxd8 27. g4 Nh4?! { (6.34 → 9.46) Inaccuracy. Rxg4+ was best. } (27... Rxg4+ 28. Ng2 c4 29. f3 Rg6 30. Kf2 cxb3 31. cxb3 Rd6 32. Bc3 Rd3 33. Rc1 Nd4 34. Bxd4) 28. Kf1 Rxg4 29. Ne2 Re4 30. Nc3 Rd4 31. Nb5?? { (6.84 → -6.62) Blunder. Ke2 was best. } (31. Ke2 c4) 31... Rd1+ 32. Ke2 Rd2+?? { (-6.51 → 11.19) Blunder. Rxh1 was best. } (32... Rxh1) 33. Kxd2 Nf3+ 34. Ke3 Ng5 35. Nxa7 Kc7 36. Be5+ Kb6 37. Nc8+ Kb7 38. Ne7 f5 39. Nxf5 Nf7 40. b4 Nxe5 41. bxc5 Nd7 42. Rb1+ Ka6 43. Nd4 Nxc5 44. Nxc6 Ne4?! { (11.37 → Mate in 4) Checkmate is now unavoidable. Nb7 was best. } (44... Nb7 45. Kd4) 45. c4?! { (Mate in 4 → 60.66) Lost forced checkmate sequence. Kxe4 was best. } (45. Kxe4 h5 46. Kd4 h4 47. Kc5 h3 48. Rb6#) 45... h5?! { (60.66 → Mate in 3) Checkmate is now unavoidable. Nc5 was best. } (45... Nc5 46. Kd4) 46. Kxe4 h4 47. Ne7 h3 48. c5 Ka7 49. c6 { Black resigns. } 1-0