Picking 101

I went through the level by trial and error. And after that, when I won, I saw that -

Spoiler

There is a hint

.
Usually the hidden things are a little annoying BUT the gameplay is very enjoyable at your level. Fast and easy, but I enjoyed it) Thanks for the level

Good one.
What I did is

Spoiler

I guessed random combinations and if R would come back out of the stone building, it would be wrong.

I recommend

Spoiler: Hint

Turning your sound up because when you get one right you will hear a star being collected.

Even though one can get this level after few trial and errors..
Level has just got 4 drags and one hint, most part was hidden.

Liked the simplicity in presentation.

Although I am not good with this levels & won by trial & error I think that I have to give an extra star cause after I noticed that there were hints... Thanks for sharing @j03cr

Trial and error