Checkmate with one queen

Learn how to checkmate with the queen.

How To Checkmate With Only A Rook And A Knight - Chess Game Strategies

Checkmate Queen Stock Illustration 359751161

How is this checkmate? - Chess Stack Exchange

Checkmate with Queen and Knight against King

How to Achieve Checkmate with Only the King & Queen - Howcast

How to checkmate with a king and a bishop, how does the strategy works - Quora

How to Checkmate With a King and Queen

Checkmate with Queen and Knight against King

17/10/20 Puzzle: Solution – Mike Basman's Chess Shop

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?