Noun
brainteaser (plural brainteasers)
(informal) A difficult problem or puzzle.
A brainteaser challenges players to spot the names of 18 brands in the mind-muddling image below. Source: Internet
As explorers are forced to halt their travel plans because of the ongoing global health pandemic, a tricky new brainteaser is sparking nostalgia for sunny beach days. Source: Internet
Elsewhere, another brainteaser taking the internet by storm in recent weeks is this tricky created by 247 Blinds. Source: Internet
It has outlived entire civilizations and still remains a favourite brainteaser for many. Source: Internet
Intelligence agency GCHQ has been forced to delete an online brainteaser after accidentally spelling out the c-word. Source: Internet
A tricky new brainteaser has challenged the nation to see how well they really know the Nineties. Source: Internet