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Puzzles (3 cohencoins award for each match):

Puzzle IOJIp: 844

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/vc41PWum"] [Date "2025.07.08"] [White "Rishi"] [Black "Harry2"] [Result "0-1"] [UTCDate "2025.07.08"] [UTCTime "20:09:39"] [WhiteElo "1370"] [BlackElo "1636"] [WhiteRatingDiff "-8"] [BlackRatingDiff "+3"] [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?! { (0.44 → -0.20) Inaccuracy. d4 was best. } (3. d4 Nf6) 3... e5 4. O-O Be6 5. e3? { (0.01 → -1.22) Mistake. d4 was best. } (5. d4 exd4) 5... Qd7?! { (-1.22 → -0.39) Inaccuracy. h5 was best. } (5... h5 6. d4) 6. d4 exd4?! { (-0.56 → 0.02) Inaccuracy. e4 was best. } (6... e4) 7. exd4 Bh3?! { (0.05 → 0.75) Inaccuracy. O-O-O was best. } (7... O-O-O 8. c3 f6 9. h4 Bh3 10. Nbd2 Bxg2 11. Kxg2 Bd6 12. Re1 h5 13. b4 g5) 8. Nh4?? { (0.75 → -1.07) Blunder. Bxh3 was best. } (8. Bxh3 Qxh3 9. Re1+ Nge7 10. c3 O-O-O 11. b4 Ng6 12. b5 Na5 13. Nbd2 Qf5 14. Nf1 Nc4) 8... Bxg2?! { (-1.07 → -0.26) Inaccuracy. Be7 was best. } (8... Be7 9. Bxh3) 9. Nxg2 Nf6?! { (-0.23 → 0.34) Inaccuracy. O-O-O was best. } (9... O-O-O 10. c3 Re8 11. Re1 Rxe1+ 12. Nxe1 Nf6 13. Nd2 h6 14. Nd3 Bd6 15. Qf3 Qe6 16. Nf1) 10. Nc3?! { (0.34 → -0.64) Inaccuracy. Re1+ was best. } (10. Re1+ Be7 11. Bg5 O-O 12. Bxf6 Bxf6 13. c3 Rfe8 14. Nd2 Ne7 15. h4 Nf5 16. Qf3 c6) 10... Bb4?! { (-0.64 → 0.21) Inaccuracy. O-O-O was best. } (10... O-O-O) 11. a3?? { (0.21 → -1.47) Blunder. Bg5 was best. } (11. Bg5 Be7 12. Bxf6 Bxf6 13. Re1+ Ne7 14. Ne2 O-O 15. c3 c6 16. Nc1 Rae8 17. Nd3 Nc8) 11... Bxc3 12. bxc3 Ne4? { (-1.41 → -0.10) Mistake. O-O was best. } (12... O-O 13. Qd3) 13. Qe2? { (-0.10 → -1.42) Mistake. f3 was best. } (13. f3 Nd6) 13... Qe6?? { (-1.42 → 6.06) Blunder. O-O-O was best. } (13... O-O-O 14. Qd3) 14. Nf4 Qe7 15. Qg4?? { (7.26 → 0.75) Blunder. Nxd5 was best. } (15. Nxd5 Nxg3 16. Nxc7+ Kd7 17. Qxe7+ Nxe7 18. fxg3 Kxc7 19. Rxf7 Rae8 20. Bg5 Kd6 21. c4 Nc6) 15... g6?? { (0.75 → 7.46) Blunder. Qd7 was best. } (15... Qd7 16. Qxd7+ Kxd7 17. Nxd5 Na5 18. a4 Rhe8 19. Ne3 Nd6 20. Ba3 Rac8 21. Rad1 Nac4 22. Bxd6) 16. Nxd5 h5 17. Qf4 g5 18. Qf5 Nxg3 19. Nf6+ Kd8 20. Qxg5?? { (11.54 → 3.14) Blunder. fxg3 was best. } (20. fxg3 Qe6) 20... Ne4?? { (3.14 → 8.89) Blunder. Nxf1 was best. } (20... Nxf1 21. Kxf1) 21. Qg7?? { (8.89 → -7.22) Blunder. Nxe4 was best. } (21. Nxe4 f6 22. Qf5 Qg7+ 23. Kh1 Ne7 24. Qxf6 Qxf6 25. Nxf6 Rg8 26. Nxg8 Nxg8 27. Kg2 Kd7) 21... Qxf6 22. Qg2 Kd7?? { (-7.26 → -0.81) Blunder. Qf5 was best. } (22... Qf5 23. Re1 Nd6 24. Qg5+ Kd7 25. Qxf5+ Nxf5 26. Kf1 Rae8 27. Rxe8 Rxe8 28. Rb1 b6 29. Rb5) 23. Qxe4 Rhg8+ 24. Kh1 Rae8 25. Qd5+ Kc8 26. Qd7+?? { (-1.28 → Mate in 5) Checkmate is now unavoidable. Be3 was best. } (26. Be3 Ne7 27. Qxh5 Rh8 28. Qg4+ Kb8 29. Bg5 Qc6+ 30. f3 f5 31. Qf4 Nd5 32. Qd2 f4) 26... Kxd7 27. Bd2 Qf3# { Black wins by checkmate. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting