As you progress through the levels of Sugar Crush Saga, you'll be challenged with different types of obstacles.
Meringue - Found in level 21 and on, requires one adjacent match to clear it.
Whipped Cream Puff - Just like the Meringue, this requires several adjacent matches to clear it.
Locked Candies - Found in level 36 and on, it will prevent any candy from falling. You can free a locked candy by making a match that involves the locked candy or clearing it with a special candy.
Chocolate - Found in level 51 and up, it will prevent any candy from falling. It can be cleared by making adjacent matches, but if you don't clear at least one chocolate per turn, it will transform a candy next to it into another chocolate.
Licorice - You'll find this in level 81 and on and is unmatchable. It will also block your blasts from striped candy.
Candy Bomb - Appears in level 96 and on, a Candy Bomb will decrease its countdown every turn. If you don't complete the level by that time, you'll lose the level.
Chocolate Fountain - This first appears in level 156. A chocolate fountain will continue to produce chocolate all around it if you don't clear chocolate in two rounds.
Marmalade - You'll first encounter Marmalade in level 186. This will hold a special candy and will need to be cleared with a candy match.