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Puzzles (3 cohencoins award for each match):

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/5ZDTcpDV"] [Date "2025.09.15"] [White "Christian1"] [Black "Drew"] [Result "1-0"] [UTCDate "2025.09.15"] [UTCTime "23:03:54"] [WhiteElo "1615"] [BlackElo "1539"] [WhiteRatingDiff "+6"] [BlackRatingDiff "-12"] [WhiteTitle "NM🐍"] [BlackTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C25"] [Opening "Vienna Game: Anderssen Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nc3 Bc5 { C25 Vienna Game: Anderssen Defense } 3. Bc4?! { (0.50 → -0.05) Inaccuracy. Nf3 was best. } (3. Nf3 d6 4. Na4 Nd7 5. g3 Ngf6 6. d3 Bb6 7. Nxb6 axb6 8. Bg2 O-O 9. O-O Re8) 3... Nf6 4. h3 O-O 5. Nf3 Nc6 6. Qe2?? { (0.12 → -1.52) Blunder. d3 was best. } (6. d3) 6... Nb4?? { (-1.52 → 0.40) Blunder. Nd4 was best. } (6... Nd4 7. Qd1) 7. Qd1? { (0.40 → -1.11) Mistake. d3 was best. } (7. d3 Nc6 8. Bg5 h6 9. Bxf6 Qxf6 10. Nd5 Qd8 11. c3 d6 12. b4 Bb6 13. a4 a5) 7... c6?? { (-1.11 → 1.12) Blunder. d5 was best. } (7... d5 8. exd5) 8. a3 Qa5?? { (0.97 → 4.08) Blunder. Na6 was best. } (8... Na6 9. Nxe5 Bd4 10. Bxa6 bxa6 11. Nf3 Bxc3 12. dxc3 Nxe4 13. O-O Re8 14. Re1 Bb7 15. Be3) 9. d3?? { (4.08 → 1.24) Blunder. axb4 was best. } (9. axb4) 9... b5? { (1.24 → 2.62) Mistake. d5 was best. } (9... d5 10. Bd2) 10. Ba2?? { (2.62 → -0.50) Blunder. Bb3 was best. } (10. Bb3) 10... Nxa2 11. Rxa2 b4? { (-0.57 → 0.93) Mistake. Qc7 was best. } (11... Qc7 12. Bg5) 12. axb4 Qxb4 13. Bd2?! { (1.25 → 0.47) Inaccuracy. Nxe5 was best. } (13. Nxe5) 13... Qb6? { (0.47 → 1.88) Mistake. Qb8 was best. } (13... Qb8) 14. Qe2? { (1.88 → 0.67) Mistake. Na4 was best. } (14. Na4 Qa6) 14... d6?! { (0.67 → 1.54) Inaccuracy. d5 was best. } (14... d5 15. O-O Re8 16. Na4 Qa6 17. Rfa1 Bd6 18. Qe1 h6 19. b4 dxe4 20. Nc5 Qb6 21. Nxe4) 15. O-O Be6 16. Raa1 Qxb2?? { (0.79 → 5.18) Blunder. Qc7 was best. } (16... Qc7 17. Na4 Bb6 18. Ra3 Qe7 19. Rfa1 Bc7 20. Nc3 Bb6 21. b4 Rfb8 22. Nd1 h6 23. Ne3) 17. Rfb1 Qxc2 18. Ne1 Qxb1 19. Rxb1 d5 20. exd5 Bxd5 21. Nxd5 Nxd5 22. Qxe5 Rae8 23. Qg3 Re2 24. Bh6?? { (5.53 → -1.00) Blunder. Nf3 was best. } (24. Nf3 Bxf2+ 25. Qxf2 Rxf2 26. Kxf2 Ra8 27. Ra1 a5 28. Rxa5 Rxa5 29. Bxa5 Nf4 30. Ne1 f6) 24... Bxf2+ 25. Qxf2 Rxf2 26. Kxf2 gxh6 27. Rb7?? { (-1.08 → -4.17) Blunder. Ra1 was best. } (27. Ra1 Ra8 28. Ra5 Nb4 29. Ke3 Re8+ 30. Kd2 Re7 31. g3 Rd7 32. Kc3 Nd5+ 33. Kd2 f6) 27... a5?? { (-4.17 → -0.23) Blunder. Ra8 was best. } (27... Ra8) 28. Ra7 Rb8 29. Rxa5 Rb2+ 30. Kf3 Rb1 31. Nc2 Rf1+ 32. Ke2 Rf6 33. Ra6? { (-0.11 → -1.23) Mistake. g3 was best. } (33. g3) 33... Nf4+ 34. Kd2 Nxg2 35. Ra8+?! { (-1.18 → -1.88) Inaccuracy. d4 was best. } (35. d4 Nf4 36. Nb4 Nxh3 37. Rxc6 Rxc6 38. Nxc6 Nf4 39. Ke3 Ng6 40. d5 Kf8 41. Nd4 h5) 35... Kg7 36. Nd4 Rd6?? { (-1.73 → 7.00) Blunder. Nf4 was best. } (36... Nf4 37. Ra5) 37. Nf5+ Kf6 38. Nxd6 Ke5 39. Nc4+ Kd5 40. Rf8 Ke6 41. Rh8 Nf4 42. Rxh7 Nxh3 43. Rxh6+ f6 44. Rxh3 f5 45. Rh6+ Kd5 46. Rh5 Ke6 47. Ke3 c5 48. Kf4?! { (Mate in 16 → 62.91) Lost forced checkmate sequence. Rh6+ was best. } (48. Rh6+ Kd7 49. Ne5+ Kc8 50. Kf4 Kc7 51. Rc6+ Kd8 52. Rxc5 Ke7 53. d4 Kd6 54. Kxf5 Ke7) 48... Kd5 49. Rxf5+ Kd4 50. Nb2 Kc3 51. Rxc5+ Kxb2 52. d4 { Black resigns. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
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