Puzzles and brainteasers are flooding the internet of late as users challenge themselves to conquer even the trickiest of puzzles.
However, this question might just be the one to conquer even the savviest of puzzle masters.
Playbuzz have released what is known to be a notoriously difficult brainteaser where users must identify the question master's relationship to a woman called Teresa.
It reads: "If Teresa's daughter is my daughter's mother, what am I to Teresa?"