I have a question

Does it count if the yellow cone is hanging form the stationary sideways?
Something like the picture.
Untitled drawing.png

NO! To count it must be FULLY nested. Please read the Game Manual.

The definition of stacked:

As stated by the definition, the cone must be fully nested. The cone in your picture is not and therefor would not be considered stacked.

Thats what I thought thanks!