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Puzzles (3 cohencoins award for each match):

Puzzle 3o64a: 584

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/6IZhtqkt"] [Date "2026.06.24"] [White "PJ"] [Black "Alexander9"] [Result "1-0"] [UTCDate "2026.06.24"] [UTCTime "20:14:12"] [WhiteElo "1940"] [BlackElo "949"] [WhiteRatingDiff "+0"] [BlackRatingDiff "-1"] [WhiteTitle "GM🥈"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C50"] [Opening "Italian Game: Giuoco Pianissimo, Italian Four Knights Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 Nf6 2. Nc3?! { (0.91 → 0.18) Inaccuracy. e5 was best. } (2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nf3 Be7 7. Nc3 O-O 8. Be3 Bf6) 2... e5 3. Nf3 Nc6 4. Bc4?! { (0.28 → -0.50) Inaccuracy. Bb5 was best. } (4. Bb5 Nd4 5. Nxd4 exd4 6. e5 dxc3 7. exf6 Qxf6 8. dxc3 Qe5+ 9. Qe2 Qxe2+ 10. Kxe2 c6) 4... Bc5?! { (-0.50 → 0.29) Inaccuracy. Nxe4 was best. } (4... Nxe4 5. Nxe4 d5 6. Bd3 dxe4 7. Bxe4 Nb4 8. a3 f5 9. Bxf5 Bxf5 10. axb4 e4 11. Qe2) 5. d3 { C50 Italian Game: Giuoco Pianissimo, Italian Four Knights Variation } O-O 6. Be3 Bxe3 7. fxe3 Qe7 8. Nd5 Qc5?? { (0.00 → 2.35) Blunder. Nxd5 was best. } (8... Nxd5 9. Bxd5 Nb4 10. Bb3 a5 11. a3 Na6 12. O-O d6 13. Ba2 Nc5 14. Qe1 Be6 15. Bxe6) 9. Nxc7?? { (2.35 → -5.93) Blunder. Nxf6+ was best. } (9. Nxf6+ gxf6 10. Qe2 Na5 11. Bb3 Nxb3 12. axb3 d5 13. exd5 Qxd5 14. O-O e4 15. dxe4 Qxe4) 9... Rb8?? { (-5.93 → 0.55) Blunder. Qa5+ was best. } (9... Qa5+) 10. Nd5 Nxd5 11. Bxd5 Qxe3+ 12. Qe2 Qb6 13. Bxc6?? { (0.93 → -1.47) Blunder. O-O-O was best. } (13. O-O-O Qc7 14. d4 d6 15. Rd2 Bg4 16. dxe5 Nxe5 17. Rhd1 b5 18. h3 Bxf3 19. gxf3 Nc4) 13... dxc6?! { (-1.47 → -0.74) Inaccuracy. Qxb2 was best. } (13... Qxb2 14. O-O bxc6 15. Qf2 Qc3 16. Qxa7 Rb2 17. Rab1 Rxb1 18. Rxb1 Qxc2 19. Rb8 Qd1+ 20. Kf2) 14. c3?! { (-0.74 → -1.37) Inaccuracy. O-O-O was best. } (14. O-O-O Re8) 14... Bg4 15. h3 Be6? { (-1.25 → 0.00) Mistake. Bxf3 was best. } (15... Bxf3 16. gxf3 Qa5 17. h4 Rbd8 18. a3 Rd6 19. O-O-O Qb5 20. Rd2 c5 21. Rhd1 Rfd8 22. Qe3) 16. Nxe5 f6? { (0.00 → 1.24) Mistake. f5 was best. } (16... f5 17. exf5 Rxf5 18. d4 Re8 19. Rf1 Rxf1+ 20. Kxf1 c5 21. Qd2 cxd4 22. cxd4 Rd8 23. Nf3) 17. Nf3 Rbd8 18. Nd4 Rxd4 19. cxd4 Qxd4 20. O-O-O?? { (1.93 → 0.14) Blunder. Rf1 was best. } (20. Rf1 Bf7 21. Rf3 Bh5 22. g4 Bf7 23. Kf1 c5 24. Qf2 Qd6 25. Re1 b6 26. b3 h6) 20... Qc5+?? { (0.14 → 2.63) Blunder. Bxa2 was best. } (20... Bxa2) 21. Qc2 Qe3+ 22. Rd2 Rd8 23. Rf1 Rd4?! { (1.55 → 2.15) Inaccuracy. c5 was best. } (23... c5 24. b3) 24. Kb1?! { (2.15 → 1.54) Inaccuracy. Rf3 was best. } (24. Rf3) 24... Rd6?! { (1.54 → 2.56) Inaccuracy. c5 was best. } (24... c5 25. Rdd1) 25. Rf3?! { (2.56 → 1.41) Inaccuracy. Rfd1 was best. } (25. Rfd1 Bf7) 25... Qg1+?! { (1.41 → 2.53) Inaccuracy. Qb6 was best. } (25... Qb6) 26. Qd1 Qb6 27. Qf1?? { (2.99 → 0.00) Blunder. d4 was best. } (27. d4 h6) 27... Qa6?? { (0.00 → 3.03) Blunder. Bxa2+ was best. } (27... Bxa2+ 28. Kc1) 28. a3 Qb6? { (2.75 → 5.44) Mistake. Qa5 was best. } (28... Qa5 29. Qf2 Bf7 30. Kc1 h6 31. d4 Re6 32. Re3 Qc7 33. Qe2 Qd6 34. Kd1 Re7 35. Qf3) 29. e5 Rd5 30. exf6 gxf6 31. Rxf6 Rd7? { (9.67 → Mate in 2) Checkmate is now unavoidable. Qd4 was best. } (31... Qd4 32. Rxe6) 32. Rf8+ Kg7 33. Qf6# { White wins by checkmate. } 1-0
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