What does 'mate in one' mean in chess? Apparently, I've done it

WHITE to move and MATE IN 3 : r/chess

Heres an exercise from a book I've been reading. The text said that Alekhine announced mate in 10 from this position in a simultaneous display. White to move, find the longest variation. : r/chess

Checkmates - Basics, Rules and Types of Popular Checkmates

In first grade my bestfriend Andrew tried teaching me the rules of chess and he pulled this move as his first move saying the knight can move anywhere as long as it's

M6 Puzzle for Mating Pattern Recognition : r/chess

What's a 'quiet move' in chess? - Quora

Funny tactic I got out of the opening. Black to move and win material : r/ chess

A cool tactic I found today - white to play and win! : r/chess

How easy is mate in 1?

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?

What is the difference between a stalemate and a draw in Chess? - Quora

Check, Checkmate, & Stalemate Differences Explained (with GIFs)

Decision making in critical positions - Chess Forums

What does 'mate in one' mean in chess? Apparently, I've done it many times since my buddy keeps telling me it's my favorite checkmate move? - Quora

I'm slaughtering the chess opponent near the end, and they call it a 'stalemate' and 1/2 1/2. What's going on? - Quora