A very bad move or mistake. A typical excuse for a game one has lost is “He didn’t outplay. I simply blundered”. Such excuses are not considered good form. Mason said: the root of brilliancy is blunder.
In the following game R. Fisher played 29..Bh2??
ECHESSPEDIA
Quotes of the Day
Petrosian would never have beaten me if he had played like that in 1963.
Mikhail Botvinnik 1966
I may be an old lion, but I can still bite someone’s hand off if he puts it in my mouth
Wilhelm Steinitz
I understood that through chess I could express myself and chess became my natural language.
Boris Spassky 1995
It is not possible to become a great player without having learned how to analyse deeply and accurately.
Mark Dvoretsky
“Chess is the struggle against the error.”
Johannes Zukertort