How do you solve level 15 on doors?

Answer 1

Grab bomb on bottome left corner, place in front of the door lite bomb with match, then pull the light strings in order with the arrows on the door.

Answer 2

To solve level 15 on doors, you need to follow these steps:

1. Move the bottom-left circle to the top-right position.
2. Move the bottom-right circle to the bottom-left position.
3. Move the top-right circle to the bottom-right position.
4. Move the top-left circle to the top-right position.
5. Move the bottom-left circle to the bottom-right position.
6. Move the top-right circle to the bottom-left position.
7. Move the top-left circle to the top-right position.
8. Move the bottom-left circle to the top-left position.
9. Move the top-left circle to the top-right position.
10. Move the bottom-right circle to the top-right position. The door will open after completing these steps.