In chess, a tactic is a sequence of moves that each makes one or more immediate threats – a check, a threat, a checkmating sequence threat, or the threat of another tactic – that culminates in the opponent's being unable to respond to all of the threats without making some kind of concession.
Stabbing attacks, which have been used as a tactic for thousands of years, became an increasingly common form of terrorism targeting random civilians in the 21st century, in particular during the 2010s and 2020s.