A child covers the left eye and studies a card with a center cross and equal blue dots.
your mission

Hunt the hole hiding in your vision

hunt started — keep your RIGHT eye on the cross

Cover your LEFT eye. Somewhere beside that cross, a dot can slip into a place your RIGHT eye cannot report. Which side is it hiding on?

clue 1

An eye is a light catcher

Six gold sensor tiles send teal wires into one thick cable through a rounded doorway.

Tiny sensors catch light and send messages along wires. All those wires gather into one thick cable that needs a doorway out.

clue 2

Light crosses on the way in

one side outside → the opposite side inside
clue 3

The doorway has no sensor

Gold sensor tiles stop around a plum wire doorway where one light speck has no tile beneath it.

Light can land at the cable exit, but no light sensor is there to send the message. That is the missing patch.

map the right eye

Find its cable exit

landing spotworking sensor
nose-side sensorcable exittemple-side sensor
put the clues together

Inside patch. Outside path.

Light crosses. The missing patch sits on the nose side inside your RIGHT eye. Which outside path reaches it?

Commit before the real dot moves.

Keep only your RIGHT eye open. Which side of the cross should the dot travel to find the missing patch?