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)

End Games and Blunders - Chess Forums

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Numerot's Blog • Numerot's Sessions #2: Blundering less •

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why is this draw because of insufficient materials - Chess Forums - Chess .com

When checkmate is an oopsie 😳 #chess