Only high-IQ puzzlers can spot the hidden rider in a seemingly simplistic drawing of a horse within a tiny time limit, its makers have determined. A scribbled sketch shows an idyllic scene with a horse in the foreground grazing on a potted plant.
The animal is clearly fitted for a rider, with a pair of reins slotted around its head and a saddle on its back.
But it is riderless, with only one other figure visibly standing in the dark doorway of the nearby windmill in the background.
That dark figure is not the rider ... Read even more
