This cheater took my rook with his queen, which is illegal because

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? - Quora

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What is it called when you switch the rook and the king? - Quora

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How can this be a valid check if my second rook is pinned? : r/chessbeginners

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