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[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/3isuZY23"] [Date "2026.03.15"] [White "Sydney"] [Black "Aviah"] [Result "1-0"] [UTCDate "2026.03.15"] [UTCTime "17:47:10"] [WhiteElo "1113"] [BlackElo "962"] [WhiteRatingDiff "+54"] [BlackRatingDiff "-73"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A04"] [Opening "Zukertort Opening: Dutch Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. Nf3 f5 { A04 Zukertort Opening: Dutch Variation } 2. e3 f4?? { (0.59 → 3.27) Blunder. e6 was best. } (2... e6 3. Be2 d5 4. c4 c6 5. d4 Bd6 6. O-O Nf6 7. Ne5 Nbd7 8. f4 Ne4 9. Nc3) 3. exf4 d5 4. Be2 d4?! { (3.29 → 5.03) Inaccuracy. Bf5 was best. } (4... Bf5 5. O-O) 5. O-O Nf6 6. Bb5+ Bd7?! { (3.98 → 5.35) Inaccuracy. c6 was best. } (6... c6 7. Bc4 g6 8. d3 Bg7 9. c3 dxc3 10. Nxc3 Nd5 11. d4 O-O 12. Re1 Kh8 13. h3) 7. g3?? { (5.35 → -4.28) Blunder. Bc4 was best. } (7. Bc4 Nc6 8. Re1 Bg4 9. h3 Bh5 10. d3 Nd5 11. f5 Qd7 12. g4 Bf7 13. Bb5 O-O-O) 7... Bxb5 8. Nxd4? { (-4.41 → -8.61) Mistake. Re1 was best. } (8. Re1 Bd7) 8... Ng4?? { (-8.61 → 4.97) Blunder. Bxf1 was best. } (8... Bxf1 9. Qxf1 Qxd4 10. c3 Qd7 11. d4 Nc6 12. Nd2 O-O-O 13. a4 Qf5 14. Nc4 Nd5 15. a5) 9. Nxb5 Qd5? { (4.60 → 15.30) Mistake. h5 was best. } (9... h5 10. d4) 10. N5c3?? { (15.30 → 3.17) Blunder. Nxc7+ was best. } (10. Nxc7+ Kd7 11. Nxd5 Nf6 12. Ne3 Nc6 13. d4 e6 14. c3 Ne4 15. Qg4 Re8 16. Qf3 Nd6) 10... Qb5?? { (3.17 → 17.28) Blunder. Qh5 was best. } (10... Qh5 11. h4) 11. Nxb5 Nxf2 12. Rxf2 Nc6 13. Nxc7+ Kd8 14. Nxa8 Kc8 15. Nb6+ axb6 16. Qg4+ Kb8 17. a4 e5 18. d3 exf4 19. Qxf4+ Ka7 20. a5 bxa5?! { (23.17 → Mate in 6) Checkmate is now unavoidable. Bc5 was best. } (20... Bc5 21. Be3) 21. Rxa5+ Kb6 22. Ra4?! { (Mate in 5 → 19.99) Lost forced checkmate sequence. Be3+ was best. } (22. Be3+ Nd4 23. Qxd4+ Kc6 24. Rf7 Be7 25. Rxe7 Re8 26. Qb6#) 22... Na5?! { (19.99 → Mate in 6) Checkmate is now unavoidable. Bc5 was best. } (22... Bc5 23. Be3) 23. Qb4+?! { (Mate in 6 → 15.53) Lost forced checkmate sequence. Be3+ was best. } (23. Be3+ Kc6 24. Rxa5 Kd7 25. Rd5+ Kc8 26. Qf5+ Kc7 27. Qd7+ Kb8 28. Qd8#) 23... Ka7?! { (15.53 → Mate in 2) Checkmate is now unavoidable. Bxb4 was best. } (23... Bxb4 24. Rxb4+ Kc6 25. Rg4 Kd6 26. Rxg7 Re8 27. Bd2 Nc6 28. Rxb7 Re7 29. Rf6+ Ke5 30. Rxe7+) 24. Rf4?! { (Mate in 2 → 19.21) Lost forced checkmate sequence. Qxa5+ was best. } (24. Qxa5+ Kb8 25. Qd8#) 24... Bxb4 25. Rfxb4 Kb8 26. Bf4+ Ka8?! { (74.61 → Mate in 1) Checkmate is now unavoidable. Kc8 was best. } (26... Kc8 27. Rxa5 g5 28. Ra8+ Kd7 29. Rxh8 gxf4 30. Rxb7+ Kd6 31. gxf4 h5 32. Rxh5 Kc6 33. Rhh7) 27. Rxa5# { White wins by checkmate. } 1-0
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