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
When I am in the USSR, I have the feeling that every tram conductor plays chess better than I do.
Hans Ree
Of chess it has been said that life is not long enough for it, but that is the fault of life, not chess.
Irving Chernev
Man has no chance to win against the modern computer. And, by and large, a confrontation between two individuals is more interesting.
Vladimir Kramnik 2015
People knew about 110 years of chess history. Nowadays, nobody is able to tell you the name of the world champion of 2000.
Anatoly Karpov 2005
“Chess is the struggle against the error.”
Johannes Zukertort