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Puzzles (3 cohencoins award for each match):

Puzzle x0DOc: 707

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/CViPh4xj"] [Date "2026.03.15"] [White "Dan"] [Black "Allen"] [Result "0-1"] [UTCDate "2026.03.15"] [UTCTime "17:16:11"] [WhiteElo "1278"] [BlackElo "1553"] [WhiteRatingDiff "-59"] [BlackRatingDiff "+6"] [BlackTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "D02"] [Opening "Queen's Pawn Game: Symmetrical Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. d4 Nf6 2. Nf3 d5 { D02 Queen's Pawn Game: Symmetrical Variation } 3. c3 Bf5 4. b4?! { (0.00 → -0.52) Inaccuracy. Qb3 was best. } (4. Qb3 Qc8 5. c4 dxc4 6. Qxc4 Be6 7. Qa4+ Bd7 8. Qc2 Bf5) 4... e6 5. Nh4?? { (-0.58 → -6.37) Blunder. Nbd2 was best. } (5. Nbd2 Bd6 6. Nh4 Be4 7. f3 Bg6 8. Nb3 c6 9. g3 Nbd7 10. Nxg6 hxg6 11. Bg2 e5) 5... Bd6?? { (-6.37 → -0.22) Blunder. Bxb1 was best. } (5... Bxb1 6. Rxb1) 6. Nxf5 exf5 7. h3?! { (-0.22 → -1.22) Inaccuracy. g3 was best. } (7. g3) 7... a5 8. bxa5 Nc6?! { (-0.95 → -0.09) Inaccuracy. Ne4 was best. } (8... Ne4 9. Nd2 c5 10. dxc5 Be5 11. Nxe4 fxe4 12. e3 Qxa5 13. Bd2 O-O 14. a4 Bxc3 15. Qc2) 9. a4?! { (-0.09 → -0.90) Inaccuracy. a6 was best. } (9. a6 bxa6) 9... Rxa5?! { (-0.90 → -0.10) Inaccuracy. Ne4 was best. } (9... Ne4 10. e3 Qh4 11. Ra2 O-O 12. Bd3 Nxa5 13. O-O Rfe8 14. Ba3 Bxa3 15. Bxe4 fxe4 16. Nxa3) 10. e3 O-O 11. Ba6?? { (-0.28 → -9.60) Blunder. Nd2 was best. } (11. Nd2 Qd7) 11... Rxa6 12. Qh5 Nxh5 13. g4 fxg4 14. hxg4 Nf6 15. g5 Ne4 16. f3 Bg3+ 17. Ke2 Qxg5 18. fxe4 Re8 19. Rg1 Rxe4 20. Rxg3 Qxg3 21. Kd3 f5 22. Bd2 Ra8 23. Na3 Rae8 24. Nb5 Rxe3+ 25. Kc2 Qf2 26. Nxc7?! { (-15.31 → Mate in 7) Checkmate is now unavoidable. Rd1 was best. } (26. Rd1 Re2) 26... R8e7?! { (Mate in 7 → -16.52) Lost forced checkmate sequence. Nxd4+ was best. } (26... Nxd4+ 27. cxd4 Rc8 28. Rd1 Qe2 29. Kb1 Qxd1+ 30. Bc1 Rb3+ 31. Ka2 Qc2+ 32. Bb2 Qxb2#) 27. Nxd5 Re2 28. Kb3 Rxd2 29. Rh1?! { (-19.26 → Mate in 7) Checkmate is now unavoidable. Ka3 was best. } (29. Ka3 Rd7) 29... Rb2+ 30. Kc4 Qc2?! { (Mate in 6 → -20.70) Lost forced checkmate sequence. Re6 was best. } (30... Re6 31. Kc5 b6+ 32. Nxb6 Ne7 33. Rh6 Rxh6 34. Kc4 Rc6+ 35. Kd3 Rd2#) 31. Nb4?! { (-20.70 → Mate in 4) Checkmate is now unavoidable. Kc5 was best. } (31. Kc5 Re4) 31... Rxb4+ 32. Kc5 Rxa4 33. Rh5 Rxd4 34. Rg5 Qxc3+ 35. Kb6 Rb4# { Black wins by checkmate. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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