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Puzzles (3 cohencoins award for each match):

Puzzle QN5jw: 999999999

GM🔥 Spencer2 (1803) +10
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/zTLXH9Cn"] [Date "2025.08.13"] [White "xavi"] [Black "Spencer2"] [Result "0-1"] [UTCDate "2025.08.13"] [UTCTime "23:03:47"] [WhiteElo "1742"] [BlackElo "1803"] [WhiteRatingDiff "-6"] [BlackRatingDiff "+10"] [WhiteTitle "GM🥉"] [BlackTitle "GM🔥"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A07"] [Opening "King's Indian Attack"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. Nf3 d5 2. g3 { A07 King's Indian Attack } Nc6 3. Bg2 Bf5?! { (-0.02 → 0.55) Inaccuracy. e5 was best. } (3... e5 4. d3) 4. O-O Nf6 5. d3 e5 6. Nc3 d4?! { (-0.03 → 0.62) Inaccuracy. Be7 was best. } (6... Be7 7. Bg5 O-O 8. Re1 d4 9. e4 dxe3 10. Bxe3 h6 11. a3 a5 12. d4 exd4 13. Nxd4) 7. Nb1?! { (0.62 → -0.37) Inaccuracy. e4 was best. } (7. e4) 7... Be7 8. Bg5?! { (0.09 → -0.58) Inaccuracy. c3 was best. } (8. c3 a5 9. Qa4 O-O 10. Qb5 Qd7 11. Nxe5 Nxe5 12. Qxe5 c5 13. Bf4 Rfe8 14. Qc7 Qe6) 8... h6 9. Bxf6 Bxf6 10. e4? { (-0.27 → -1.37) Mistake. c3 was best. } (10. c3 a5 11. Nbd2 a4 12. cxd4 exd4 13. Ne4 Be7 14. Rc1 Be6 15. Nc5 Bxc5 16. Rxc5 O-O) 10... Bg4 11. h3 Bxf3?! { (-1.73 → -0.70) Inaccuracy. Be6 was best. } (11... Be6) 12. Bxf3 Qd7?! { (-0.67 → 0.06) Inaccuracy. g6 was best. } (12... g6 13. h4) 13. Bg2? { (0.06 → -1.18) Mistake. Bg4 was best. } (13. Bg4 Qe7) 13... O-O-O?! { (-1.18 → -0.56) Inaccuracy. h5 was best. } (13... h5) 14. Nd2 h5 15. Kh2 h4 16. g4 Be7 17. f3? { (-1.04 → -2.72) Mistake. a3 was best. } (17. a3 Bg5 18. Nc4 Nb8 19. b4 Qe7 20. b5 Nd7 21. a4 Nb6 22. Kg1 Nxc4 23. dxc4 Qc5) 17... g6? { (-2.72 → -1.52) Mistake. Bg5 was best. } (17... Bg5 18. a3) 18. Nc4? { (-1.52 → -3.11) Mistake. f4 was best. } (18. f4 exf4) 18... f5?? { (-3.11 → -0.18) Blunder. Bg5 was best. } (18... Bg5 19. a3 a6 20. Kg1 Qe7 21. Nd2 Be3+ 22. Kh1 Qg5 23. Nb3 Rd6 24. Nc5 Nd8 25. b4) 19. a4?? { (-0.18 → -3.33) Blunder. exf5 was best. } (19. exf5 gxf5 20. f4 exf4 21. Kh1 fxg4 22. Qxg4 Qxg4 23. hxg4 Nb4 24. Rae1 Rde8 25. Re5 Nxc2) 19... Bg5 20. a5 Bf4+ 21. Kg1 Ne7? { (-3.73 → -2.20) Mistake. a6 was best. } (21... a6 22. Rb1) 22. a6 b6 23. Rf2?? { (-1.92 → -4.54) Blunder. b4 was best. } (23. b4) 23... Ng8?? { (-4.54 → -2.01) Blunder. b5 was best. } (23... b5) 24. b4? { (-2.01 → -3.51) Mistake. Qe2 was best. } (24. Qe2 Re8) 24... Nf6?? { (-3.51 → -0.37) Blunder. b5 was best. } (24... b5 25. Na5 fxg4 26. fxg4 Be3 27. Kf1 Bxf2 28. Kxf2 Ne7 29. Nb7 Rdf8+ 30. Kg1 Nc6 31. Qd2) 25. Rb1?? { (-0.37 → -4.47) Blunder. Nxe5 was best. } (25. Nxe5 Qe8 26. Nc4 Kb8 27. Re2 Qd7 28. exf5 gxf5 29. Ne5 Qe8 30. b5 Qxb5 31. Nf7 Nd5) 25... fxg4?? { (-4.47 → -0.18) Blunder. b5 was best. } (25... b5) 26. fxg4 Rdf8?! { (-0.18 → 0.67) Inaccuracy. Qe6 was best. } (26... Qe6 27. Rxf4 exf4 28. Qf3 g5 29. b5 Rhe8 30. Re1 Nd5 31. e5 Rf8 32. Kh1 c6 33. bxc6) 27. b5?? { (0.67 → -2.02) Blunder. Rxf4 was best. } (27. Rxf4) 27... Bg3 28. Rf1 Qh7? { (-2.04 → -0.62) Mistake. Nh7 was best. } (28... Nh7 29. Qd2 Rxf1+ 30. Rxf1 Rf8 31. Bf3 Qg7 32. g5 Kd8 33. Qd1 Qe7 34. Bg4 Rxf1+ 35. Qxf1) 29. Qd2 Nxg4?? { (-0.38 → 1.51) Blunder. Qd7 was best. } (29... Qd7 30. Rf3) 30. Rxf8+?? { (1.51 → -0.31) Blunder. hxg4 was best. } (30. hxg4 h3 31. Rxf8+ Rxf8 32. Rf1 Bf4 33. Qb4 Rd8 34. Bf3 Qh4 35. Qe1 Bg3 36. Qe2 c6) 30... Rxf8 31. hxg4 h3? { (-0.16 → 1.07) Mistake. Rf2 was best. } (31... Rf2 32. Qxf2 Bxf2+ 33. Kxf2 Qh6 34. Rf1 c6 35. Kg1 cxb5 36. Nxe5 h3 37. Bf3 Kc7 38. g5) 32. Rf1 Rxf1+ 33. Bxf1 h2+? { (1.09 → 2.38) Mistake. Qh4 was best. } (33... Qh4 34. Kh1) 34. Kh1 Qf7 35. Qg2?! { (2.57 → 1.92) Inaccuracy. Bg2 was best. } (35. Bg2 Bf4 36. Qb4 g5 37. c3 dxc3 38. Qxc3 Qd7 39. Qb4 Qxg4 40. Qf8+ Kd7 41. Qf5+ Qxf5) 35... Qf4 36. Qd2?? { (1.79 → Mate in 1) Checkmate is now unavoidable. Be2 was best. } (36. Be2) 36... Qxf1# { Black wins by checkmate. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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