This level requires lots of combinations. Use every move carefully because 18 moves may not be enough. This means you have to collect an average of 50 candies per move.
This level may look very hard due to the very low number of moves; however, it is generally quite easy as there are only 4 colours, meaning large cascades can occur regularly, especially after the blockers have been removed.
This level's difficulty is variable because success heavily depends on getting frequent cascades, which is usually down to luck (even when the blockers have been removed).