The board is rather small, and all lucky candies spawned will turn into blockers, making the creation of other special candies rather difficult, even when only three candy colours are present on the screen.
Chocolate can spread rather too quickly if matches are not always made adjacent to the chocolate, forcing the player to quit due to no available moves.
The player needs to collect around 10 chocolate squares per move, meaning that each move is quite valuable in order to complete the level.
Your main priority should be attempting to keep the chocolate squares at bay while opening up lucky candies and getting lucky with cascades. If chocolate squares are left alone for more than one move, it can suffocate your board and force you to quite early with no more available matches. The top of the board (especially the center two squares), must be kept clear at all costs.
Wrapped candies will help you the most of this level, since when detonated they will open lucky candies and then destroy the chocolate on their second explosions. In addition, wrapped candies + striped candy (or colour bomb) combinations could be made (if you're lucky) to clear out the entire board and take out some of the necessary orders.
A lot of luck is needed to get 200 squares in time, so do not worry if it takes multiple tries.