It may not be the easiest way to produce the solution to a magazine maze test, but you can do it with Photoshop, using the magic wand.
- Increase contrast.
- Select the right wall of the maze using the magic wand.
- Menu
Select > Modify > Expand 4 pixels
. - Create new layer.
- Fill with Red.
- Menu
Select > Modify > Contract 2 pixels
. - Delete. Here’s the solution.
- Manually clean up the outer edge, and connect the dots.
seen at Taint.org