The influx of vintage puzzles doing the rounds online shows no signs of stopping.
The latest, posted by Playbuzz, asks players to find three ailing patients stricken by yellow fever, which took a toll on the population in the 1800s.
According to the site only one per cent of the population will be able to find the patients hidden in the picture of a 19th Century hospital.
Scroll down for reveal
The three sick patients suffering from Yellow Fever are somewhere in this picture but can you spot them?
If you are struggling to solve the mystery, pay close attention to the doctor’s hair, and you might just spot the profile of a bearded man.
Did you manage to find all three without cheating?
There they are! Two are hidden in either person’s hair and the other is in the sheets
