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Puzzles (3 cohencoins award for each match):

Puzzle 6Xtv3: 439

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/rieDulcj"] [Date "2026.01.30"] [White "Trekker"] [Black "BENJAMIN4"] [Result "0-1"] [UTCDate "2026.01.30"] [UTCTime "21:29:03"] [WhiteElo "1848"] [BlackElo "1610"] [WhiteRatingDiff "-14"] [BlackRatingDiff "+13"] [WhiteTitle "GM🎅"] [BlackTitle "🌊"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A01"] [Opening "Nimzo-Larsen Attack: Classical Variation"] [Termination "Time forfeit"] [Annotator "cohenchessclub.com"] 1. b3 d5 { A01 Nimzo-Larsen Attack: Classical Variation } 2. Bb2 Bf5 3. Nf3 Nf6 4. e3 Nbd7 5. c4 c6 6. Nc3 e6 7. d4 Be7 8. Bd3 Bxd3 9. Qxd3 O-O 10. h3 Bb4 11. O-O-O?? { (0.23 → -1.51) Blunder. O-O was best. } (11. O-O Re8 12. a3 Ba5 13. Rad1 Bxc3 14. Bxc3 Ne4 15. a4 Nf8 16. Qc2 Ng6 17. Bb4 h6) 11... b5 12. cxb5 Bxc3?! { (-1.75 → -1.07) Inaccuracy. cxb5 was best. } (12... cxb5) 13. Bxc3 c5 14. Kb2?! { (-0.67 → -1.33) Inaccuracy. dxc5 was best. } (14. dxc5 Nxc5 15. Qd4 Nce4 16. Be1 Qb8 17. Kb1 Rc8 18. Ne5 Qxb5 19. f3 Nc5 20. Qb4 Qe8) 14... Ne4 15. Rhf1 Nxc3?! { (-0.95 → -0.34) Inaccuracy. Qb6 was best. } (15... Qb6 16. Rc1) 16. Qxc3 Qb6? { (-0.40 → 0.80) Mistake. c4 was best. } (16... c4 17. Rb1 a6 18. bxc4 dxc4 19. b6 Nxb6 20. Ka1 Rc8 21. Qa5 Nd5 22. Qxd8 Rfxd8 23. Rb7) 17. a4?? { (0.80 → -1.28) Blunder. dxc5 was best. } (17. dxc5) 17... Rfc8?! { (-1.28 → -0.62) Inaccuracy. a6 was best. } (17... a6 18. Ra1) 18. Rc1?! { (-0.62 → -1.43) Inaccuracy. dxc5 was best. } (18. dxc5 Nxc5) 18... h6?? { (-1.43 → 1.99) Blunder. a6 was best. } (18... a6) 19. Rc2?? { (1.99 → -0.26) Blunder. dxc5 was best. } (19. dxc5 Nxc5) 19... a6 20. bxa6? { (-0.54 → -1.74) Mistake. dxc5 was best. } (20. dxc5 Rxc5 21. Qd4 Rxc2+ 22. Kxc2 Rc8+ 23. Kb2 Qc7 24. Qd2 axb5 25. axb5 Qb6 26. Nd4 Ra8) 20... Rxa6?! { (-1.74 → -0.78) Inaccuracy. Qxa6 was best. } (20... Qxa6) 21. Rfc1?? { (-0.78 → -4.12) Blunder. Ra1 was best. } (21. Ra1 Qb7 22. dxc5 Nxc5 23. Qxc5 Rxc5 24. Rxc5 Rb6 25. Rc3 f6 26. a5 Ra6 27. Nd4 e5) 21... Ra5?? { (-4.12 → -0.32) Blunder. Rxa4 was best. } (21... Rxa4 22. Ra1 Rxa1 23. Kxa1 Qa6+ 24. Kb1 Qf1+ 25. Ne1 c4 26. bxc4 Rb8+ 27. Kc1 Nf6 28. f3) 22. Ka3?? { (-0.32 → -4.32) Blunder. Ra1 was best. } (22. Ra1 c4) 22... Rca8?? { (-4.32 → 0.00) Blunder. c4 was best. } (22... c4 23. Nd2) 23. Nd2?? { (0.00 → -3.81) Blunder. dxc5 was best. } (23. dxc5 Nxc5 24. Qxc5 Rxc5 25. Rxc5 Rb8 26. Rc8+ Rxc8 27. Rxc8+ Kh7 28. b4 Qa6 29. Rc3 e5) 23... c4 24. Rb2?? { (-3.24 → -7.59) Blunder. Nxc4 was best. } (24. Nxc4) 24... cxb3 25. Rxb3 Rxa4+ 26. Kb2 Ra2+ 27. Kb1 Qa6 28. Rd1 Ra1+ 29. Kc2 Qa2+?! { (-8.05 → -5.14) Inaccuracy. Ra2+ was best. } (29... Ra2+ 30. Rb2) 30. Kd3?! { (-5.14 → -11.89) Inaccuracy. Rb2 was best. } (30. Rb2 Qa4+ 31. Nb3 Ra3 32. Kd2 Nb6 33. Rbb1 Rc8 34. Qd3 Nc4+ 35. Ke1 Rb8 36. Nc5 Qa5+) 30... Rxd1 31. Rb2 Qa6+ 32. Kc2 Qa4+ 33. Rb3 Ra1 34. Kd3 Ra2 35. Rb2 Rxb2 36. Qxb2 Qa6+ 37. Kc2 Rc8+ 38. Kd1 Qf1+?? { (-10.05 → 5.53) Blunder. e5 was best. } (38... e5 39. g4) 39. Nxf1 Kh7 { Black wins on time. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting