Answered: About SG9

[modelairplane]

Is the robot hoarding more than one cone at a time and is it legal?
If the robot moves in the process of the top three cones in the shaking， is it legal？
Thanks!

[VEX_GDC]

This scenario is covered by SG9 Note 2, quoted here for reference:

Note 2: Stacked Cones do not count towards the Possession limit. (i.e. A Robot is allowed to control the movement of a Mobile Goal with Stacked Cones). Robots can interact with Cones that are fully nested on upright Goals without those Cones counting towards the possession limit, provided that those Cones would otherwise be considered Stacked if they were not being contacted by a Robot.

Please also see the following Q&A posts for further clarification:

https://vexforum.com/t/answered-supporting-stacked-cones/41976/1
https://vexforum.com/t/answered-is-touching-a-stack-on-a-mobile-goal-possession/41451/1
https://vexforum.com/t/answered-sg9-and-incidental-or-more-contact/42062/1

And the following VRC In the Zone Referee Training video, especially the portion starting at time 4:27: VRC In the Zone Referee Training Chapter 9: Hoarding and Possession - YouTube

If this does not answer your question, please feel free to rephrase and resubmit.