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Hello @primb and welcome to this community! There are two possible ways to remove the frosting underneath the dragon: A striped candy hitting it from the top will destroy the blocker. Also the wrapped candy on the bottom row will remove it if it explodes. So the downwards striped candy in the second column will also win you the level because that would hit the wrapped.
The game decides if it will drop you the candies you need at this point, so yes, make the move Palash suggested above, but be aware that is not up to chance what will drop but decided by how the level was written by King. If you make this best possible move the game will either allow you to pass, cause you to fail or remain one move short.
If you need any more tips on the game, check out my thread here: