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Puzzles (3 cohencoins award for each match):

Puzzle cfgpz: 999999999

GM🎅 Trekker (1840) +4
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/pt8KNjUi"] [Date "2025.09.19"] [White "Trekker"] [Black "BENJAMIN4"] [Result "1-0"] [UTCDate "2025.09.19"] [UTCTime "20:18:46"] [WhiteElo "1840"] [BlackElo "1683"] [WhiteRatingDiff "+4"] [BlackRatingDiff "-4"] [WhiteTitle "GM🎅"] [BlackTitle "🌊"] [Variant "Standard"] [TimeControl "420+2"] [ECO "D06"] [Opening "Queen's Gambit Declined: Austrian Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. c4 d5?! { (0.43 → 1.04) Inaccuracy. e5 was best. } (1... e5 2. g3) 2. d4?! { (1.04 → 0.33) Inaccuracy. cxd5 was best. } (2. cxd5 Nf6 3. Nf3 c6 4. dxc6 Nxc6 5. d4 Bg4 6. Nc3 Bxf3 7. exf3 Qxd4 8. Qb3 Qb4) 2... c5 { D06 Queen's Gambit Declined: Austrian Defense } 3. dxc5 Nf6 4. cxd5 Nxd5? { (0.42 → 1.71) Mistake. Qxd5 was best. } (4... Qxd5 5. Qxd5 Nxd5 6. e4 Nb4 7. Na3 e5 8. Be3 N8a6 9. Bb5+ Bd7 10. Bxd7+ Kxd7 11. O-O-O+) 5. e4?! { (1.71 → 0.95) Inaccuracy. Nf3 was best. } (5. Nf3 Nc6) 5... Nf6 6. Qxd8+ Kxd8 7. Nc3 e6 8. b4?! { (1.03 → 0.13) Inaccuracy. Bg5 was best. } (8. Bg5 h6 9. Bh4 g5 10. Bg3 Bxc5 11. h4 g4 12. h5 Nc6 13. O-O-O+ Bd7 14. Nge2 Rc8) 8... Nc6?? { (0.13 → 1.98) Blunder. a5 was best. } (8... a5 9. bxa5 Rxa5 10. Bd2 Bxc5 11. Nf3 Ra8 12. Rc1 Ke7 13. Bb5 b6 14. e5 Nd5 15. Bg5+) 9. a3 Be7? { (1.80 → 3.63) Mistake. a5 was best. } (9... a5) 10. Nf3 e5 11. h3?! { (4.21 → 2.68) Inaccuracy. Be3 was best. } (11. Be3 Be6) 11... Be6?! { (2.68 → 3.80) Inaccuracy. a5 was best. } (11... a5) 12. Be3 Kc7 13. Be2 Rad8 14. O-O Nd4?? { (3.29 → 7.15) Blunder. h6 was best. } (14... h6 15. Bd1 Rd3 16. Rc1 Rxc3 17. Rxc3 Nxe4 18. Rc1 f5 19. Nd2 Nxd2 20. Bxd2 Bf6 21. Bc3) 15. Nxd4 exd4 16. Bf4+ Kc6 17. Bb5# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
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