One of Britain's most famous living astronauts Tim Peake has been confusing people with a really challenging puzzle.
Over on his Facebook page, Major Peake asked his followers a question plucked from his new book Ask an Astronaut.
The conundrum presented users with an illustration of a box with a dot on the bottom.
The box can only be moved by rolling it left, right forward (towards you) or backwards (away from you).
Mentally you are then asked to move the box in the following pattern: forward, left, left, forward, right, backwards, right.
Once you've done that, answer where the dot ends up after its short journey.
Take a look below and see if you can figure it out.
This was reportedly an actual question that Tim and all other astronauts had to answer before being selected to go into space.
It has been completely bamboozling many people on Facebook - let us know how you got on.
Can't see the quiz? Click here.
HT The Sun