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Puzzles (3 cohencoins award for each match):

Puzzle Bijdf: 470

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/fqIdmqXu"] [Date "2026.10.28"] [White "Jacob6"] [Black "Samuel"] [Result "1-0"] [UTCDate "2026.10.28"] [UTCTime "14:00:46"] [WhiteElo "1457"] [BlackElo "1463"] [WhiteRatingDiff "+16"] [BlackRatingDiff "-16"] [WhiteTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B00"] [Opening "Pirc Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 d6 { B00 Pirc Defense } 2. c4 c6? { (0.15 → 1.24) Mistake. c5 was best. } (2... c5 3. Ne2 e5 4. d3 g6 5. g3 Bg7 6. Bg2 Nc6 7. a3 Nge7 8. Nbc3 O-O 9. Rb1) 3. b4? { (1.24 → -0.02) Mistake. d4 was best. } (3. d4 e5 4. Nf3 Nf6 5. Nc3 Nbd7 6. Be2 Be7 7. h3 O-O 8. Qc2 exd4 9. Nxd4 Re8) 3... b6 4. a4 e6 5. Bd3?! { (0.00 → -0.61) Inaccuracy. Nc3 was best. } (5. Nc3 d5) 5... f6?? { (-0.61 → 1.65) Blunder. Na6 was best. } (5... Na6 6. b5 Nb4 7. Be2 d5 8. exd5 cxd5 9. Nf3 dxc4 10. O-O Bb7 11. a5 Nf6 12. axb6) 6. Ba3?! { (1.65 → 0.86) Inaccuracy. b5 was best. } (6. b5 Ne7) 6... Nd7 7. Qb3?! { (1.14 → 0.50) Inaccuracy. Nc3 was best. } (7. Nc3 Nh6) 7... g6 8. g4?? { (0.91 → -1.00) Blunder. Nf3 was best. } (8. Nf3) 8... h6? { (-1.00 → 0.18) Mistake. Bg7 was best. } (8... Bg7 9. Nc3) 9. h4 Ne7 10. Nf3 Rg8?! { (-0.28 → 0.45) Inaccuracy. Bg7 was best. } (10... Bg7 11. Nc3) 11. Nd4 a6?? { (0.00 → 3.87) Blunder. Kf7 was best. } (11... Kf7) 12. Nxe6 Nf5?? { (3.92 → 9.97) Blunder. Nc5 was best. } (12... Nc5 13. bxc5 Bxe6 14. cxb6 f5 15. gxf5 gxf5 16. Nc3 a5 17. O-O-O Rb8 18. exf5 Nxf5 19. Bxf5) 13. Nxd8 Kxd8 14. exf5 gxf5 15. gxf5 Ne5 16. Be4 Nd7 17. Bxc6 Ne5 18. Bxa8 Bxf5 19. Qf3 Bc8 20. Qxf6+ Kd7 21. Qxe5 dxe5 22. Rh3 Rg4 23. Re3 Rxc4 24. Rxe5 Rxh4 25. Ra2 Kc7 26. a5 bxa5 27. bxa5 Rh1+ 28. Ke2 Bxa3 29. Rxa3 Rxb1 30. Rc5+ Kd6 31. Rac3 Rb8 32. Bc6 Bh3 33. R5c4 Bg2 34. Bxg2 h5 35. Rd4+ Ke6 36. Bd5+ Ke5 37. Ke3 h4?! { (56.78 → Mate in 7) Checkmate is now unavoidable. Kd6 was best. } (37... Kd6 38. Rc6+) 38. Rc6 Rb1 39. Re6+?! { (Mate in 5 → 72.37) Lost forced checkmate sequence. f4+ was best. } (39. f4+ Kf5 40. Be6+ Kf6 41. Bh3+ Ke7 42. Rd7+ Ke8 43. Rc8#) 39... Kf5 40. Ree4 h3 41. f4 h2 42. Be6+ Kg6 43. Rd7?? { (9.42 → 0.00) Blunder. f5+ was best. } (43. f5+) 43... h1=Q 44. Rf7?? { (0.00 → -9.22) Blunder. Bf7+ was best. } (44. Bf7+ Kf6 45. Re6+ Kf5 46. Re5+ Kf6) 44... Qh8?? { (-9.22 → 0.00) Blunder. Re1+ was best. } (44... Re1+ 45. Kf2) 45. Re5 Qa8?? { (0.00 → Mate in 4) Checkmate is now unavoidable. Re1+ was best. } (45... Re1+ 46. Kd4 Rxe5 47. fxe5 Qh4+ 48. Kc5 Qd8 49. Kc6 Qxa5 50. Rf6+ Kg7 51. Rf7+) 46. Ref5?? { (Mate in 4 → -5.06) Lost forced checkmate sequence. Rg5+ was best. } (46. Rg5+ Kh6 47. Rf6+ Kh7 48. Bf5+ Kh8 49. Rh6#) 46... Ra1?? { (-5.06 → Mate in 2) Checkmate is now unavoidable. Re1+ was best. } (46... Re1+ 47. Kf2 Rxe6 48. Rf8 Qa7+ 49. Kf3 Qb7+ 50. Kg4 Rd6 51. Rg5+ Kh7 52. d4 Qe7 53. Rfg8) 47. R5f6+ Kh5 48. Rh7# { White wins by checkmate. } 1-0
RapidOverall
½½½½01½½01
1½3½
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