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Puzzles (3 cohencoins award for each match):

Puzzle ZIemn: 730

NM Archer1 (1167) −4
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/3ul81kfW"] [Date "2025.11.11"] [White "Ezra1"] [Black "Archer1"] [Result "1-0"] [UTCDate "2025.11.11"] [UTCTime "21:03:45"] [WhiteElo "1510"] [BlackElo "1167"] [WhiteRatingDiff "+3"] [BlackRatingDiff "-4"] [WhiteTitle "😼"] [BlackTitle "NM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C25"] [Opening "Vienna Game: Anderssen Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nc3 Bc5 { C25 Vienna Game: Anderssen Defense } 3. Bc4?! { (0.50 → -0.05) Inaccuracy. Nf3 was best. } (3. Nf3 d6 4. Na4 Nd7 5. g3 Ngf6 6. d3 Bb6 7. Nxb6 axb6 8. Bg2 O-O 9. O-O Re8) 3... Qh4? { (-0.05 → 0.98) Mistake. Nf6 was best. } (3... Nf6 4. Nf3 d6 5. d3 c6 6. a3 O-O 7. Ba2 Bb6 8. h3 Nbd7 9. Ne2 Re8 10. g4) 4. Qf3 Nf6 5. Nd5?! { (0.45 → -0.29) Inaccuracy. h3 was best. } (5. h3) 5... Nxd5 6. Bxd5 O-O 7. d3 d6 8. Bd2 Bg4? { (-0.63 → 0.38) Mistake. c6 was best. } (8... c6 9. Bb3 a5 10. a4 Be6 11. Nh3 Bb4 12. Bxb4 axb4 13. Bxe6 fxe6 14. Qg3 Qe7 15. O-O) 9. Qg3 Qxg3 10. hxg3 Nc6 11. Nf3? { (0.02 → -1.23) Mistake. c3 was best. } (11. c3 a5) 11... Bxf3 12. gxf3 Nd4 13. Bxb7?? { (-1.19 → -6.10) Blunder. Kf1 was best. } (13. Kf1 Nxf3 14. Bc3 c6 15. Bb3 a5 16. a4 Nd4 17. Bxd4 Bxd4 18. c3 Bc5 19. Rd1 g6) 13... Rab8 14. Bd5 Nxc2+ 15. Kd1 Nxa1 16. Ba5 Bxf2 17. Bxc7 Rbc8 18. Bxd6 Rfe8 19. Rh2 Bxg3 20. Rg2 Bh4 21. Bb7 Rcd8 22. Bc7 Rxd3+ 23. Ke2 Rd4 24. Bc6 Rc8?! { (-8.23 → -5.50) Inaccuracy. Re7 was best. } (24... Re7 25. Ba5 Rc4 26. Bd5 Rc2+ 27. Kf1 Re8 28. Rxc2 Nxc2 29. Ke2 Nd4+ 30. Kd3 Ne6 31. Bxe6) 25. Bxe5 Rxc6 26. Bxd4 a5?? { (-6.55 → -0.75) Blunder. Rc2+ was best. } (26... Rc2+) 27. Rxg7+ Kf8 28. Rxh7 Rc7?? { (-0.77 → 7.35) Blunder. Nc2 was best. } (28... Nc2 29. Bc3) 29. Rxh4 a4 30. Kd2 Rd7 31. Kc3 Rc7+ 32. Kd3 f5 33. Rh8+ Ke7 34. Rh7+ Kd8 35. Bb6 Kc8?! { (60.83 → Mate in 11) Checkmate is now unavoidable. Ke8 was best. } (35... Ke8 36. Rxc7 fxe4+ 37. fxe4 Kf8 38. Rc1 Nb3 39. axb3 axb3 40. Bc7 Ke8 41. Kc4 Kd7 42. Kxb3) 36. Rxc7+ Kb8 37. Rh7?! { (Mate in 6 → 70.14) Lost forced checkmate sequence. exf5 was best. } (37. exf5 a3 38. bxa3 Ka8 39. f6 Nb3 40. axb3 Kb8 41. f7 Ka8 42. f8=Q#) 37... fxe4+?! { (70.14 → Mate in 8) Checkmate is now unavoidable. Kc8 was best. } (37... Kc8 38. Rc7+ Kd8 39. exf5 a3 40. Rc1+ Ke7 41. bxa3 Kf6 42. Ke4 Kf7 43. a4 Ke8 44. a5) 38. fxe4 a3 39. bxa3 Kc8 40. Kc4?! { (Mate in 8 → 77.49) Lost forced checkmate sequence. Bd4 was best. } (40. Bd4 Nb3 41. axb3 Kb8 42. Bf6 Ka8 43. e5 Kb8 44. e6 Kc8 45. Rd7 Kb8 46. e7 Ka8) 40... Nc2?! { (77.49 → Mate in 5) Checkmate is now unavoidable. Nc2 was best. } (40... Nc2 41. Rc7+ Kb8 42. a4 Ne3+ 43. Bxe3 Kxc7 44. e5 Kd7 45. Kd5 Kc7 46. a5 Kb7 47. e6) 41. Kc5 Ne3 42. Kc6 Nf5 43. Rh8# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting