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Puzzles (3 cohencoins award for each match):

Puzzle oaTA9: 495

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/zkjyX0Xi"] [Date "2025.12.20"] [White "Eli4"] [Black "Abigail1"] [Result "0-1"] [UTCDate "2025.12.20"] [UTCTime "00:04:50"] [WhiteElo "758"] [BlackElo "1016"] [WhiteRatingDiff "-6"] [BlackRatingDiff "+5"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A40"] [Opening "Horwitz Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. d4 e6 { A40 Horwitz Defense } 2. e3 c5 3. Nc3?! { (0.39 → -0.34) Inaccuracy. d5 was best. } (3. d5 exd5 4. Ne2 Nf6 5. g3 Nc6 6. Nbc3 g6 7. Bg2 d6 8. O-O Bg7 9. Nxd5 Nxd5) 3... cxd4?! { (-0.34 → 0.38) Inaccuracy. d5 was best. } (3... d5) 4. exd4 e5?? { (0.40 → 3.50) Blunder. d5 was best. } (4... d5 5. Nf3 Nc6 6. Bf4 a6 7. Bd3 Nf6 8. O-O Nh5 9. Bd2 Nb4 10. Be2 Nc6 11. Re1) 5. Nf3 exd4 6. Nxd4 Bc5?! { (3.59 → 4.50) Inaccuracy. Bb4 was best. } (6... Bb4 7. Nb5) 7. Ndb5 Qf6?! { (4.60 → 7.98) Inaccuracy. Nc6 was best. } (7... Nc6 8. Bf4) 8. Ne4 Qh4 9. g3?? { (9.84 → -4.86) Blunder. Qd5 was best. } (9. Qd5 Bxf2+ 10. Nxf2 Qe7+ 11. Qe4 d5 12. Qxe7+ Nxe7 13. Nc7+ Kd8 14. Nxa8 Nbc6 15. Bf4 Nb4) 9... Qg4?? { (-4.86 → 17.70) Blunder. Qxe4+ was best. } (9... Qxe4+ 10. Be3) 10. Nxc5 Qe6+ 11. Qe2 Nc6 12. Bd2 Nd4 13. O-O-O?? { (15.78 → 2.60) Blunder. Nxe6 was best. } (13. Nxe6 Nxe2 14. Nec7+ Ke7 15. Nxa8 Nxg3 16. hxg3 d5 17. Bb4+ Kd8 18. O-O-O Nf6 19. Nxa7 Bg4) 13... Qxe2?? { (2.60 → 7.92) Blunder. Nxe2+ was best. } (13... Nxe2+ 14. Bxe2 Qc6 15. Bb4 Kd8 16. Nd6 Kc7 17. Bb5 Qf3 18. Rhe1 Nf6 19. Nce4 a5 20. Ba3) 14. Bxe2 Nxe2+ 15. Kb1 Nd4 16. f4?? { (10.14 → -1.47) Blunder. Nxd4 was best. } (16. Nxd4 Ne7) 16... Nxb5 17. Nxb7?? { (-1.41 → -6.67) Blunder. a4 was best. } (17. a4 d6 18. Rhe1+ Ne7 19. Ne4 Bg4 20. axb5 Bxd1 21. Rxd1 O-O-O 22. Ng5 Rd7 23. Nxf7 Rg8) 17... Bxb7 18. f5 g6?! { (-9.76 → -5.84) Inaccuracy. Bxh1 was best. } (18... Bxh1 19. Rxh1 Ne7 20. Re1 f6 21. g4 Nd4 22. Bc3 Nc6 23. h3 Kf7 24. Rd1 Rad8 25. Kc1) 19. f6?! { (-5.84 → -9.92) Inaccuracy. Rhe1+ was best. } (19. Rhe1+) 19... Nxf6 20. g4 Nxg4 21. h3 Nf2 22. Rdf1 Nxh1 23. Rxh1 f5 24. Rf1 g5 25. Rxf5 h6 26. Re5+ Kf7 27. Rf5+ Kg6 28. Rxb5 Rhe8 29. Rxb7 Rf8 30. Rxd7?! { (-4.71 → -6.85) Inaccuracy. a4 was best. } (30. a4) 30... Rf1+ 31. Bc1 Re8 32. Rd6+ Kf5 33. Rd5+ Kg6 34. h4 Ree1 35. Rd1 Rxd1 36. c4?! { (-15.76 → Mate in 1) Checkmate is now unavoidable. b3 was best. } (36. b3 Rxc1+) 36... Rxc1# { Black wins by checkmate. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting