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Puzzles (3 cohencoins award for each match):

Puzzle 51BsB: 329

IM🧁 Sasha (1529) −9
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/F8r9Cs3L"] [Date "2025.10.05"] [White "Francis"] [Black "Sasha"] [Result "1-0"] [UTCDate "2025.10.05"] [UTCTime "17:12:21"] [WhiteElo "1506"] [BlackElo "1529"] [WhiteRatingDiff "+12"] [BlackRatingDiff "-9"] [WhiteTitle "θ"] [BlackTitle "IM🧁"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A05"] [Opening "King's Indian Attack"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. Nf3 d5 2. g3 Nf6 { A05 King's Indian Attack } 3. Bg2 Bg4 4. h3 Bxf3 5. Bxf3 c6 6. O-O e6 7. d4 Nbd7 8. Bg5 Be7 9. Nc3 O-O 10. Bf4 Nb6?! { (-0.36 → 0.43) Inaccuracy. b5 was best. } (10... b5) 11. e4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Bd6 14. Be5 Bxe5 15. dxe5 Qxd1 16. Rfxd1 Rfd8 17. Kh2?? { (0.00 → -1.93) Blunder. f4 was best. } (17. f4 Na4 18. Rab1 g6 19. Kf2 Kf8 20. g4 Ke7 21. Rxd8 Rxd8 22. Ke3 h6 23. h4 Nc5) 17... g6?? { (-1.93 → -0.28) Blunder. Nc4 was best. } (17... Nc4) 18. b3 Nd5 19. c4?? { (-0.19 → -3.34) Blunder. Kg2 was best. } (19. Kg2) 19... Nc3 20. Rxd8+ Rxd8 21. Bf3 Rd3? { (-3.01 → -1.69) Mistake. Rd2 was best. } (21... Rd2 22. Kg2 Rb2 23. Re1 Nxa2 24. Re2 Rxe2 25. Bxe2 Kg7 26. f4 f6 27. exf6+ Kxf6 28. Kf2) 22. Kg2 Kg7 23. h4 h6 24. c5?! { (-1.27 → -2.23) Inaccuracy. a3 was best. } (24. a3 h5 25. b4 a6 26. Re1 Kf8 27. Rc1 Na2 28. Rd1 Rxa3 29. b5 axb5 30. cxb5 cxb5) 24... f6?! { (-2.23 → -1.29) Inaccuracy. a5 was best. } (24... a5 25. a3) 25. Bg4? { (-1.29 → -2.63) Mistake. exf6+ was best. } (25. exf6+) 25... f5 26. Bf3 Ne4?? { (-2.75 → -0.28) Blunder. a5 was best. } (26... a5) 27. Be2?? { (-0.28 → -2.67) Blunder. Bxe4 was best. } (27. Bxe4 fxe4 28. Re1 Rd4 29. Re3 a5 30. Kf1 h5 31. Ke2 Kf7 32. a3 g5 33. hxg5 Kg6) 27... Rd2 28. Re1?? { (-2.58 → -5.69) Blunder. Kf3 was best. } (28. Kf3 Nxc5 29. Ke3 Rc2 30. Rd1 Rxa2 31. Rd6 Ra3 32. Kd4 Nxb3+ 33. Kc3 Nc1+ 34. Kb2 Ra2+) 28... Rxa2 29. b4 b6?? { (-5.75 → -0.46) Blunder. Rb2 was best. } (29... Rb2 30. Kf1) 30. f3?? { (-0.46 → -4.56) Blunder. b5 was best. } (30. b5 cxb5 31. c6 Rc2 32. Bxb5 a6 33. Re2 Rc5 34. Bxa6 Nc3 35. Rb2 Rxc6 36. Bb7 Rc5) 30... Nc3 31. Kf2?! { (-4.55 → -6.00) Inaccuracy. cxb6 was best. } (31. cxb6 axb6) 31... Nxe2?? { (-6.00 → -0.61) Blunder. b5 was best. } (31... b5) 32. Rxe2 Rxe2+ 33. Kxe2 bxc5? { (-1.16 → -0.04) Mistake. Kf8 was best. } (33... Kf8) 34. bxc5 a5 35. Kd3 a4?? { (0.00 → 6.61) Blunder. Kf7 was best. } (35... Kf7 36. Kc4 Ke7 37. Kb3 Kd8 38. Ka4 Kc8 39. Kxa5 Kb7 40. h5 gxh5 41. f4 Ka7 42. Ka4) 36. Kc3 a3 37. Kb3 a2 38. Kxa2 g5 39. hxg5 hxg5 40. Ka3 Kf7 41. Ka4 Ke7 42. Ka5 Kd7 43. Kb6 f4 44. gxf4 gxf4 45. Kb7 Ke7 46. Kxc6 Kf7 47. Kd6 Kg6 48. c6 Kf7 49. c7 Ke8 50. c8=Q+ Kf7 51. Qxe6+ Kg7 52. Qf6+ Kh7 53. e6 Kg8 54. e7 Kh7 55. Qxf4 Kg6 56. e8=Q+ Kg7 57. Qh5 Kg8 58. Qhg5+ Kh7 59. Qfh4# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting