Good King Wenceslas has become Good King Wences-LOST in the latest mind-bending puzzle to baffle the internet.
In the popular carol, the kind-hearted ruler and his page head out into the snow to deliver winter fuel to a poor villager.
But in this brain-teaser by Optical Express he has lost his way amid a forest of pine trees.
His loyal page – at the bottom of the picture, by the village – is about to set out on his quest to find his master. Can you help him?
The national eye care provider created the challenge to mark its latest laser eye surgery offer – a full refund if patients do not achieve 20/20 vision or better.
A spokesman for Optical Express, which is celebrating its 25th anniversary, said: “Having good vision won’t necessarily help you solve our mind-melting puzzle, but it will give you a head start.”