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Puzzles (3 cohencoins award for each match):

Puzzle SNtKd: 537

GM Nathan4 (1444?) +27
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/AqTe9v0T"] [Date "2025.07.25"] [White "LEO2"] [Black "Nathan4"] [Result "0-1"] [UTCDate "2025.07.25"] [UTCTime "23:15:58"] [WhiteElo "1327"] [BlackElo "1444"] [WhiteRatingDiff "-49"] [BlackRatingDiff "+27"] [WhiteTitle "GM"] [BlackTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B01"] [Opening "Scandinavian Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 d5?! { (0.33 → 0.96) Inaccuracy. c5 was best. } { B01 Scandinavian Defense } (1... c5 2. Nf3 d6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nc6 6. O-O h6 7. Nd5 Nf6 8. Nxf6+) 2. Nc3? { (0.96 → -0.50) Mistake. exd5 was best. } (2. exd5 Nf6 3. d4 Bf5 4. Nf3 Nxd5 5. Bd3 Bxd3 6. Qxd3 e6 7. O-O c5 8. Qe2 cxd4) 2... dxe4?! { (-0.50 → 0.08) Inaccuracy. d4 was best. } (2... d4 3. Nb1 Nf6 4. e5 Nd5 5. Nf3 c5 6. Bc4 Nc6 7. O-O h6 8. d3 g5 9. Re1) 3. Nxe4 Nf6 4. d3 Nxe4 5. dxe4 Qxd1+ 6. Kxd1 Bg4+ 7. f3 Bh5 8. g4 Bg6 9. Bg2?! { (0.11 → -0.46) Inaccuracy. Nh3 was best. } (9. Nh3 h5 10. g5 e5 11. Be3 f5 12. gxf6 gxf6 13. Rg1 Bf7 14. Nf2 Nc6 15. c3 Bh6) 9... e5 10. f4? { (-0.34 → -1.72) Mistake. Be3 was best. } (10. Be3 h5 11. g5 Nc6 12. c3 f5 13. gxf6 gxf6 14. Bh3 Rd8+ 15. Ke1 Ne7 16. Be6 f5) 10... exf4 11. Bxf4 Bd6?? { (-1.80 → 4.71) Blunder. Na6 was best. } (11... Na6 12. Ne2 h5 13. gxh5 Bxh5 14. Ke1 Nb4 15. Rc1 O-O-O 16. a3 Nc6 17. Ng3 Bg4 18. h3) 12. e5 Bc5?! { (4.44 → 6.05) Inaccuracy. Bxe5 was best. } (12... Bxe5 13. Bxe5) 13. Nf3?? { (6.05 → -2.14) Blunder. Bxb7 was best. } (13. Bxb7) 13... Nc6 14. Ng5?? { (-2.12 → -5.78) Blunder. c3 was best. } (14. c3 O-O-O+) 14... O-O-O+ 15. Ke1 Bxc2?? { (-5.37 → -0.72) Blunder. h6 was best. } (15... h6 16. Ne4) 16. Bxc6?! { (-0.72 → -1.25) Inaccuracy. Nxf7 was best. } (16. Nxf7 Bb4+) 16... bxc6 17. e6?? { (-1.13 → -3.68) Blunder. Nxf7 was best. } (17. Nxf7 Rdf8) 17... fxe6?! { (-3.68 → -2.55) Inaccuracy. Rd4 was best. } (17... Rd4 18. Be3 Rxg4 19. Bxc5 Rxg5 20. b4 fxe6 21. Rg1 Re5+ 22. Kf2 Rd8 23. Rxg7 Rd2+ 24. Kg3) 18. Nf7?? { (-2.55 → -5.39) Blunder. Rc1 was best. } (18. Rc1) 18... Bb4+? { (-5.39 → -3.28) Mistake. Rdf8 was best. } (18... Rdf8) 19. Kf1?? { (-3.28 → -7.71) Blunder. Ke2 was best. } (19. Ke2 Rdf8) 19... Bd3+?? { (-7.71 → -2.80) Blunder. Rhf8 was best. } (19... Rhf8 20. Nxd8 Rxf4+ 21. Ke2 Kxd8 22. Rac1 Bg6 23. Rhd1+ Bd6 24. Rxc6 Ra4 25. b3 Rxa2+ 26. Rd2) 20. Kg1?? { (-2.80 → -7.76) Blunder. Kf2 was best. } (20. Kf2 Rdf8 21. Nxh8 Be4 22. Ke3 Bxh1 23. Rxh1 Bd6 24. Bg3 Rxh8 25. Rf1 Rd8 26. b3 Bxg3) 20... Bc5+ 21. Kg2 Be4+ 22. Kf1 Bxh1 23. Nxh8 Rxh8 24. Ke2 Bg2 25. Rc1 Bd4 26. Rxc6 Bxc6 27. g5 Bxb2 28. g6 Bb5+ 29. Ke3 Bc1+ 30. Kf3 Bxf4 31. Kxf4 Rf8+ 32. Kg5 Kd7 33. gxh7 Rh8 34. Kg6 Ke7 35. Kxg7 Rxh7+ 36. Kxh7 Bd3+ 37. Kh6 Bc4 38. h4 Bxa2 39. h5 e5 40. Kg6 e4 41. h6 e3 42. h7 Bb1+ 43. Kg7 Bxh7 44. Kxh7 e2 { White resigns. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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