100 Locked Doors Level 47 Walkthrough:
Pick up the knife and use it on the red gem on the knight. It will become loose. Shake your phone to make it drop. Pick it up and place it in the spot on the right. Take the key and use it on the door.
Proceed to the next 100 Locked Doors level!
Hit like if the 100 Locked Doors Level 47 walkthrough helped you! Thanks :)