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Puzzles (3 cohencoins award for each match):

Puzzle qOCxt: 999999999

GM🐧 Vladimir (1311) +31
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/2OlXd3LJ"] [Date "2025.10.18"] [White "Ivan"] [Black "Vladimir"] [Result "0-1"] [UTCDate "2025.10.18"] [UTCTime "17:03:19"] [WhiteElo "1432"] [BlackElo "1311"] [WhiteRatingDiff "-52"] [BlackRatingDiff "+31"] [WhiteTitle "NM"] [BlackTitle "GM🐧"] [Variant "Standard"] [TimeControl "420+2"] [ECO "D02"] [Opening "Queen's Pawn Game: Symmetrical Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. d4 d5 2. Nf3 Nf6 { D02 Queen's Pawn Game: Symmetrical Variation } 3. Nc3 Nc6 4. Bg5 Bg4 5. e3 h6?! { (-0.25 → 0.38) Inaccuracy. Ne4 was best. } (5... Ne4 6. Bh4) 6. Be2?? { (0.38 → -7.52) Blunder. Bxf6 was best. } (6. Bxf6) 6... hxg5 7. Nxg5 Bxe2 8. Qxe2 Nd7 9. O-O Rh7?? { (-7.20 → 6.98) Blunder. e6 was best. } (9... e6) 10. Qf3?? { (6.98 → 0.02) Blunder. Nxh7 was best. } (10. Nxh7) 10... Nf6 11. e4?? { (0.00 → -6.00) Blunder. Nxh7 was best. } (11. Nxh7 Nxh7 12. Qxd5 Qxd5 13. Nxd5 O-O-O 14. Nc3 Nf6 15. Rad1 Re8 16. h3 e5 17. dxe5 Nxe5) 11... Rh6?! { (-6.00 → -3.84) Inaccuracy. Rh5 was best. } (11... Rh5) 12. exd5 Qd6 13. dxc6?? { (-3.62 → Mate in 1) Checkmate is now unavoidable. g3 was best. } (13. g3) 13... Qxh2# { Black wins by checkmate. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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