Solve Maze:
Layer 1
 _ _ X _ X
 X X X _ X
 _ _ _ _ X
 _ X X X X
 _ X X X X
Layer 2
 X _ X _ X
 X X X X X
 X X X X X
 X X X X X
 _ X X X X
Layer 3
 X _ X _ X
 X _ X X X
 X _ _ _ X
 X X X X X
 _ X X X X
Layer 4
 X X X _ X
 X X X X X
 X X X _ X
 X X X X X
 _ X X X X
Layer 5
 X X X _ X
 X X X _ X
 X X X _ X
 X X X X X
 _ _ _ _ _

Solution:
Layer 1
 R I X D X
 X X X D X
 D L L L X
 D X X X X
 I X X X X
Layer 2
 X I X O X
 X X X X X
 X X X X X
 X X X X X
 I X X X X
Layer 3
 X D X O X
 X D X X X
 X R R I X
 X X X X X
 I X X X X
Layer 4
 X X X O X
 X X X X X
 X X X I X
 X X X X X
 I X X X X
Layer 5
 X X X O X
 X X X U X
 X X X U X
 X X X X X
 R R R R E