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Puzzles (3 cohencoins award for each match):

Puzzle f4zWN: 487

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/PYJIaWZh"] [Date "2026.01.31"] [White "TC"] [Black "Eitan1"] [Result "0-1"] [UTCDate "2026.01.31"] [UTCTime "00:42:22"] [WhiteElo "818"] [BlackElo "1229"] [WhiteRatingDiff "-3"] [BlackRatingDiff "+1"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A00"] [Opening "Hungarian Opening"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. g3 { A00 Hungarian Opening } e5 2. Nh3? { (0.21 → -0.94) Mistake. c4 was best. } (2. c4 Nf6 3. Bg2 c6 4. d4 exd4 5. Qxd4 Na6 6. Nf3 d5 7. O-O Bc5 8. Qe5+ Be6) 2... d5 3. Bg2 c6? { (-1.25 → -0.22) Mistake. Nc6 was best. } (3... Nc6 4. Ng1) 4. O-O?! { (-0.22 → -0.75) Inaccuracy. d4 was best. } (4. d4 Nd7) 4... Bxh3? { (-0.75 → 0.34) Mistake. h5 was best. } (4... h5 5. f3) 5. Bxh3 g6? { (0.53 → 1.64) Mistake. Nf6 was best. } (5... Nf6 6. d4) 6. Kg2? { (1.64 → 0.36) Mistake. d4 was best. } (6. d4 exd4 7. Qxd4 Nf6 8. c4 dxc4 9. Qxd8+ Kxd8 10. Nd2 Bh6 11. Nxc4 Bxc1 12. Raxc1 Kc7) 6... f5 7. f4? { (0.69 → -0.73) Mistake. d3 was best. } (7. d3 Nf6) 7... exf4 8. gxf4 Bd6 9. Rf3?! { (-0.68 → -1.37) Inaccuracy. d3 was best. } (9. d3 Nf6 10. Nd2 Qe7 11. e4 dxe4 12. dxe4 fxe4 13. Nc4 Bc7 14. b3 O-O 15. Ba3 c5) 9... Nh6 10. Rb3?? { (-1.29 → -3.19) Blunder. d4 was best. } (10. d4 b5) 10... Na6?! { (-3.19 → -1.99) Inaccuracy. Bxf4 was best. } (10... Bxf4 11. d4 Qg5+ 12. Rg3 Qh4 13. Bxf4 Qxf4 14. c4 dxc4 15. Qd2 Qxd2 16. Nxd2 Nd7 17. Re3+) 11. Rg3?? { (-1.99 → -6.01) Blunder. d4 was best. } (11. d4 Nc7) 11... Nc5?? { (-6.01 → -2.51) Blunder. Bxf4 was best. } (11... Bxf4 12. Rf3) 12. Ra3?? { (-2.51 → -6.71) Blunder. d3 was best. } (12. d3) 12... Ne4?! { (-6.71 → -5.03) Inaccuracy. Bxf4 was best. } (12... Bxf4) 13. b4?! { (-5.03 → -8.17) Inaccuracy. d3 was best. } (13. d3 Bxa3) 13... a5?? { (-8.17 → -2.87) Blunder. Bxf4 was best. } (13... Bxf4 14. Qg1) 14. d4?? { (-2.87 → -6.25) Blunder. d3 was best. } (14. d3 Nf6) 14... axb4 15. Ra7?! { (-5.42 → -10.60) Inaccuracy. Rxa8 was best. } (15. Rxa8) 15... Qh4?? { (-10.60 → 3.47) Blunder. Rxa7 was best. } (15... Rxa7 16. Nd2) 16. Rxb7?? { (3.47 → -10.35) Blunder. Rxa8+ was best. } (16. Rxa8+ Kf7) 16... Ra3? { (-10.35 → -4.76) Mistake. Ng4 was best. } (16... Ng4 17. Bxg4) 17. Nxa3 Bxf4?? { (-5.97 → 0.36) Blunder. g5 was best. } (17... g5) 18. Kf3?? { (0.36 → Mate in 1) Checkmate is now unavoidable. Bxf4 was best. } (18. Bxf4 Qxf4) 18... Bxh2 19. Ke3 Qxh3# { Black wins by checkmate. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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