Find two ways to checkmate black in one move, Puzzle!! - Chess

In this position, (black to move) Qe1 is apparently checkmate, but I am confused because the rook is pinned and therefore cannot defend the queen. Can someone explain this to me?

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Do you see it? White to move, mate in 2. (via @Ruhichess) : r/chess

Find two ways to checkmate black in one move, Puzzle!! - Chess Forums

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I have been trying to solve this puzzle for so long,is this hard or am I just bad?(white plays,checkmate in 3) : r/chess