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)

A checkmate blunder, really? - Chess Forums

Opponent made a blunder which cost them the game. Black to move and win. : r/chess

Ding wins Game 6 of World Championship rollercoaster

Can somebody please explain why this checkmate is a blunder? : r/AnarchyChess

Chess Daily News by Susan Polgar - Blunder of the century? Biggest blunder ever?

My opponent (white) with this truly incredible blunder : r/chessbeginners

Chess: Can you checkmate with three queens against a lone king?

I GOT A FOOLS MATE VS A 2300 BOT! - Chess Forums

Chess Chats - Off-Topic Discussion - The Interactive Fiction Community Forum

I've always wondered about this scenario. Is this checkmate? - Chess Forums