Lichess analysis computer considers my f4 move as inaccuracy. Why

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I played Qg3# but it was marked wrong. Lichess wanted g3# but I still lost rating for a checkmate in 1. : r/chess

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How inflated are the online chess ratings offered by lichess.org? - Quora

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Can someone explain to me why is Nd6 considered a miss? It gives white the same advantage and, as far as I can tell, doesn't result in any missed material. : r/chess

Waterville Chess Club Archives

Why is Lichess.org so popular with online chess players? - Quora