checkmate = blunder - Chess Forums

a checkmate move is a blunder??? (how do you post image? no icon for image posting. i thought i can simply paste it here. it appears when i paste it, but it does not post)

Magnus Carlsen Blunders Checkmate in 1 Move

Just lost to martin, I'm f-ing quitting this game : r/chessbeginners

Engine says mate is a blunder? - Chess Forums

I took pawn checkmate a little too far

Chess: checkmate in four with just a single sequence needed for White — can you solve it?

Blundering Checkmate - Chess Forums

Why checkmate is a wrong move in this puzzle? - Chess Forums

Quick question about a blunder - Chess Forums

World champion Carlsen blundered into checkmate. How could he have won?