Here you can configure application settings:
A single dot (circle) will appear briefly on the screen.
Your task is to find a dot that will NOT be within the same imagined (vizualized) line (direction) and enter the order of appearance (ordinal number) of this dot on the screen.
There are two possible cases:
At the end you will be informed about your results.
Which dot was not on the same imagined line?
(0 = all dots were on the same line)