Hint 1 — Think about it
A list is a row of boxes that grows. Every time the car makes a decision, drop a letter in the next box. When it finishes, read the boxes back. What would a mirrored maze give you?
Hint 2 — Which blocks to use
| delete all of ( route ) | Start with an empty list. |
| add ( R ) to ( route ) | One letter per turn. |
| write ( route ) on the light matrix | Scrolls the list across the hub. |
| repeat until < color sensor sees green > | Your S-Curve loop, unchanged. |
Hint 3 — Plan in plain words
- Copy your Mission 3 program.
- Empty the list at the start.
- In each branch (right, left) add the matching letter.
- After the loop, write the list on the hub.
Watch out: Add the letter inside the branch that made the turn, or the list will be wrong. A dead end adds a U — there should be none here.
Playbook: Stop and look · The right-hand rule · Remember your route