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Puzzles (3 cohencoins award for each match):

Puzzle MslHo: 923

GM🎅 Trekker (1770) +1
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/0Xwg9QFu"] [Date "2025.07.18"] [White "Kyle7"] [Black "Trekker"] [Result "0-1"] [UTCDate "2025.07.18"] [UTCTime "23:49:39"] [WhiteElo "1271"] [BlackElo "1770"] [WhiteRatingDiff "-4"] [BlackRatingDiff "+1"] [WhiteTitle "IM"] [BlackTitle "GM🎅"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B02"] [Opening "Alekhine Defense: Scandinavian Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 Nf6 2. Nc3?! { (0.91 → 0.18) Inaccuracy. e5 was best. } (2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nf3 Be7 7. Nc3 O-O 8. Be3 Bf6) 2... d5 { B02 Alekhine Defense: Scandinavian Variation } 3. e5 Nfd7 4. d4 c5 5. dxc5 e6 6. Bb5 Nc6 7. a4? { (-0.22 → -1.66) Mistake. Nf3 was best. } (7. Nf3 Bxc5) 7... Bxc5?! { (-1.66 → -0.95) Inaccuracy. Ncxe5 was best. } (7... Ncxe5 8. Be3) 8. Nf3?! { (-0.95 → -1.94) Inaccuracy. Qg4 was best. } (8. Qg4 Ndxe5) 8... a6?! { (-1.94 → -1.15) Inaccuracy. O-O was best. } (8... O-O 9. Qe2) 9. Be3?? { (-1.15 → -7.01) Blunder. Bxc6 was best. } (9. Bxc6 bxc6) 9... Bxe3? { (-7.01 → -3.99) Mistake. axb5 was best. } (9... axb5 10. axb5) 10. fxe3? { (-3.99 → -7.91) Mistake. Bxc6 was best. } (10. Bxc6) 10... axb5 11. axb5 Rxa1 12. Qxa1 Ncxe5 13. Nxe5 Nxe5 14. g4 Qh4+ 15. Ke2 Qxg4+ 16. Kf2 Qf3+ 17. Ke1 Qxh1+ 18. Kf2 Qxa1 19. b4?! { (-21.01 → Mate in 6) Checkmate is now unavoidable. b6 was best. } (19. b6 Qxb2) 19... Qxc3 20. Ke2 Qxe3+?! { (Mate in 4 → -21.38) Lost forced checkmate sequence. Qxc2+ was best. } (20... Qxc2+ 21. Kf1 Nd3 22. Kg1 Qf2+ 23. Kh1 Qf1#) 21. Kxe3 Nc4+ { White resigns. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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