You need to complete the maze by entering from the entrance (near yellow circle - bottom left) and then leave from the exit point (near green circle - bottom middle).
You need to follow below rules:
1. You can go through one circle more than once.
2. You can move only by exchanging green and yellow circles.
![enter image description here](http://puzzle.queryhome.com/?qa=blob&qa_blobid=13812723507054211148)