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
This one hour allows me to put the problem into the background and then, when I come back, I am much more rational and less emotional about the particular problem and I can think better about it.
G. Borg 2016
We will note the openings used by the participants of a nine-round match. The age of openings is considerably higher than the age of both rivals. Some opening positions could be analyzed by Steinitz when he was preparing to his match with Zukertort.
Mikhail Tal 1966 (Petrosian-Spassky match)
I don’t believe that Garry likes making decisions by democratic procedures. When there is a decision that he doesn’t like, he just turns against this organization.
Georgios Makropoulos 2013
Do you realize, Fischer almost never has any bad pieces? He exchanges them, and the bad pieces remain with his opponents.
Yury Balashov
A good sacrifice is one that is not necessarily sound but leaves your opponent dazed and confused.
Rudolf Spielmann