List of secret exit courses in Puzzle & Dragons: Super Mario Bros. Edition
From the Super Mario Wiki
There are several courses in Puzzle & Dragons: Super Mario Bros. Edition that contain alternate exits to unlockable courses. Such courses involve using teammates - whose Skills can be used when charged by pressing (shown as in game) during the player's turn - to change Orbs to a color not present on the Orb field normally to match most orbs of that kind at branching paths.