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Stockfish 9+wasm
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1e4e52d4exd43Qxd4Nc64Qe3Qe75Bb5Nf66Bc4Qxe47Qxe4+Nxe48f3Nf29Kxf2Q@d4+10Q@e3+Qxe3+11Bxe3@d412Bxd4Nxd413c3Q@c2+14Ke3Nf5+15Kf4B@d6+16Kg4h5+17Kh3@g4+18fxg4hxg4+19Kxg4@h5+20Kg5f6+21Kg6Nh4#
0-1
Checkmate, Black is victorious
FEN
PGN
[Event "Ariadna Arena"] [Site "http://chess-academy.net/1prHN73B"] [Date "2025.03.12"] [Round "-"] [White "Matei2018"] [Black "Alex_Alex"] [Result "0-1"] [UTCDate "2025.03.12"] [UTCTime "16:41:34"] [WhiteElo "1255"] [BlackElo "1729"] [WhiteRatingDiff "-4"] [BlackRatingDiff "+2"] [Variant "Crazyhouse"] [TimeControl "600+0"] [ECO "?"] [Opening "?"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Qe7 5. Bb5 Nf6 6. Bc4 Qxe4 7. Qxe4+ Nxe4 8. f3 Nf2 9. Kxf2 Q@d4+ 10. Q@e3+ Qxe3+ 11. Bxe3 P@d4 12. Bxd4 Nxd4 13. c3 Q@c2+ 14. Ke3 Nf5+ 15. Kf4 B@d6+ 16. Kg4 h5+ 17. Kh3 P@g4+ 18. fxg4 hxg4+ 19. Kxg4 P@h5+ 20. Kg5 f6+ 21. Kg6 Nh4# { Black wins by checkmate. } 0-1
   00000000000100000Matei20181
   11111111111011111Alex_Alex16
Computer analysis Move times Crosstable FEN & PGN