Star Wars Pit Droid: Easy Mos Espa Market
This level has a fun video of a pit droid having trouble with a wrench.
A) First, there's a rather easy 3:1 ratio arrow that you just send every fourth droid somewhere else. They line up nicely for that.
B) Another puzzle with keys, you have to figure out how to get the right droids to hit each key, while distracting the others until the keys are all unlocked. Luckily, they just sit and wait for the doors to open.
Star Wars Pit Droid Walkthroughs
Star Wars Pit Droid Puzzles