Chapter 3: Debugging · Level 15 of 30

Level 15: Too Many Times

Goal: The loop goes round too many times and bumps the rock. Fix the number. ★★★ = 5 blocks or fewer.

▶ Watch how it works

Many bugs are a wrong number. Watch this loop.

Got it? Now solve your puzzle ↓ (a different board — work it out yourself!)

Speed

💡 Need a hint?

Count the squares the robot must walk before it turns. Use − on the repeat block.

Many bugs are a wrong number. Counting carefully is part of coding.

Chapter 3 — Debugging: Each level starts with a program that has a mistake. Run it, watch where it goes wrong, and fix it.

move forwardThe robot moves one square the way it is facing.
turn rightThe robot turns to its right on the same square.
repeatRuns the blocks inside it again and again — tap − and + to choose how many times.