How To Solve A Maze With Photoshop
The picture above is a tiny portion of huge maze that was solved by photoshop in two minutes. Believe it or not? Click here to get the huge maze and solve it yourself. 
1. Increase contrast.
2. Select the right wall of the maze using the magic wand.
3. Select > Modify > Expand 4 pixels
4. Create new layer.
5. Fill with Red.
6. Select > Modify > Contract 2 pixels.
7. Delete. Now you’ve got a line tracing the solution.
8. Manually clean up the outer edge, and connect the dots.
9. Cake
Source: Taint via J-Walkblog