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Puzzles (3 cohencoins award for each match):

Puzzle sHb21: 609

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/uo9QIJPt"] [Date "2025.12.04"] [White "Sasha"] [Black "Junhee"] [Result "0-1"] [UTCDate "2025.12.04"] [UTCTime "00:20:10"] [WhiteElo "1504"] [BlackElo "1713"] [WhiteRatingDiff "-4"] [BlackRatingDiff "+4"] [WhiteTitle "IM🧁"] [BlackTitle "GM⏳"] [Variant "Standard"] [TimeControl "420+2"] [ECO "D02"] [Opening "Queen's Pawn Game: London System"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. d4 d5 2. Nf3 Nf6 3. Bf4 { D02 Queen's Pawn Game: London System } Bf5 4. e3 e6 5. Bd3 Bd6 6. Bxd6 Qxd6 7. Nbd2 Ne4 8. Nxe4?? { (0.39 → -6.53) Blunder. Bxe4 was best. } (8. Bxe4 dxe4) 8... Bxe4?? { (-6.53 → 0.42) Blunder. dxe4 was best. } (8... dxe4 9. Bb5+ c6 10. Be2 exf3 11. Bxf3 Qb4+ 12. c3 Qe7 13. g4 Bg6 14. h4 h6 15. Qb3) 9. Bxe4 dxe4 10. Nd2 f5 11. O-O Qb4 12. Nb3 Nc6? { (0.52 → 1.71) Mistake. Nd7 was best. } (12... Nd7 13. c3 Qb6 14. a4 O-O 15. a5 Qd6 16. Nd2 b5 17. axb6 axb6 18. Rxa8 Rxa8 19. Qb3) 13. c3?! { (1.71 → 0.81) Inaccuracy. Nc5 was best. } (13. Nc5 Nd8 14. Qh5+ g6 15. Qh6 Nf7 16. Qh4 g5 17. Qh5 Ke7 18. c3 Qb5 19. c4 Qe8) 13... Qe7?! { (0.81 → 1.34) Inaccuracy. Qd6 was best. } (13... Qd6 14. Qh5+ g6 15. Qe2 O-O 16. Rfd1 Kg7 17. Nd2 Ne7 18. Qb5 b6 19. c4 a6 20. Qb3) 14. Nc5?! { (1.34 → 0.55) Inaccuracy. f3 was best. } (14. f3 exf3) 14... b6 15. Na4?! { (0.53 → -0.07) Inaccuracy. Qa4 was best. } (15. Qa4 Qd6 16. Nb3 O-O 17. Nd2 Rad8 18. b4 Qd7 19. Qb3 Ne7 20. Nc4 Ng6 21. a4 Rf6) 15... O-O 16. b3 Na5?! { (-0.43 → 0.24) Inaccuracy. e5 was best. } (16... e5) 17. b4 Nb7 18. a3?! { (0.12 → -0.45) Inaccuracy. Nb2 was best. } (18. Nb2 a5) 18... Rac8?! { (-0.45 → 0.31) Inaccuracy. Nd6 was best. } (18... Nd6 19. Nb2 Rf6 20. c4 Rh6 21. c5 Qh4 22. h3 Nf7 23. f4 Qg3 24. Qe1 Rxh3 25. Qxg3) 19. Nb2 c5 20. dxc5 bxc5 21. bxc5?? { (0.58 → -2.26) Blunder. Qa4 was best. } (21. Qa4 Nd8 22. b5 Nf7 23. Nc4 h5 24. Rad1 h4 25. h3 Rc7 26. Na5 g5 27. Nc6 Qf6) 21... Rxc5 22. Na4 Rc4 23. g3?! { (-1.62 → -2.65) Inaccuracy. Rb1 was best. } (23. Rb1 Rfc8 24. Rb4 R4c7 25. Qb1 h6 26. Rd1 Kh7 27. h3 Nd6 28. Qb3 Nc4 29. Rb8 Ne5) 23... Nc5?? { (-2.65 → -0.34) Blunder. Nd6 was best. } (23... Nd6 24. Qb3) 24. Nxc5 Qxc5?! { (-0.37 → 0.62) Inaccuracy. Rxc5 was best. } (24... Rxc5 25. Qa4 Rfc8 26. Rfd1 R8c7 27. Rac1 h6 28. Rd2 Kh7 29. Qb3 Rc4 30. Kg2 e5 31. Qb8) 25. Qd2?! { (0.62 → -0.19) Inaccuracy. Qd7 was best. } (25. Qd7) 25... Rxc3 26. Rac1 Rxc1 27. Rxc1 Qxa3 28. Kg2 Qe7 29. Qd4 Rb8 30. Qe5 Rb6?? { (-0.57 → 4.98) Blunder. Rb7 was best. } (30... Rb7) 31. Rc7?? { (4.98 → 0.00) Blunder. Rc8+ was best. } (31. Rc8+ Kf7) 31... Qf6 32. Qxf6 gxf6 33. Rxa7 Rb8 34. Kh3 Rf8 35. Kh4 Rf7 36. Rxf7?? { (-0.07 → -4.18) Blunder. Ra2 was best. } (36. Ra2 Kg7 37. Kh5 Rc7 38. Rb2 Ra7 39. Rc2 Rb7 40. h4 e5 41. Rd2 f4 42. gxf4 exf4) 36... Kxf7 37. Kh5 Kg7 38. h4?? { (-3.87 → -9.70) Blunder. Kh4 was best. } (38. Kh4) 38... h6 39. g4 fxg4 40. Kxg4 Kg6 41. h5+ Kg7?? { (-8.42 → -0.23) Blunder. Kf7 was best. } (41... Kf7 42. Kf4 f5 43. Kg3 Kf6 44. Kh4 e5 45. Kh3 Kg5 46. Kh2 Kh4 47. Kg2 Kg4 48. Kf1) 42. Kf4 f5 43. f3?? { (-0.11 → -10.57) Blunder. Ke5 was best. } (43. Ke5 Kf7 44. Kd6 Kf6 45. Kd7 e5 46. Kd6 f4 47. Kd5 Kf5 48. Kd6 f3 49. Kd5 Kg5) 43... exf3 44. Kxf3 Kf6 45. Kf4 e5+ 46. Kf3 Kg5 47. e4 fxe4+ 48. Kxe4 Kxh5 49. Kxe5 Kg4 50. Ke4 h5 51. Ke3 Kg3 52. Ke2 Kg2 53. Ke3 h4 54. Ke4 h3 55. Ke3?! { (-11.48 → Mate in 14) Checkmate is now unavoidable. Kd4 was best. } (55. Kd4 h2) 55... h2 { White resigns. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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