Clear the landing zone of rocks Pro Preview

The rocks

You can use any objects you have at hand, such as large caps, small balls, or LEGO parts from the sets.

The arrangement

Arrange the rocks in a square. This will help prepare you for a future task - moving in a square.
Of course, the teacher may arrange the rocks differently at the start of the class.

One program, one launch

Your task is to clear as many rocks as possible with only one program. You cannot run the program four times to collect each rock separately.

Step by step

Even though you need to create a longer program, you do not have to write it all at once. Add and test the commands one by one.