Removing the liquorice locks too early will result in a flood of chocolate that you will not be able to stem until it is too late. Remember, you only have 20 moves. Make each one count by destroying as much jelly that is out in the open first, then concentrating on the liquorice squares.
Special candy combinations can destroy tons of jelly at once, but may also destroy the liquorice prematurely. On the plus side, if the chocolate is already out, you can keep it at bay this way too. Keep in mind that huge combinations can unbalance Odus, so be very careful.
If Odus’s colours match one of the colours of candy trapped by the liquorice, triggering a moon struck will break the cage and expose the jelly. Once Odus is gone, make cascades from the bottom quickly to prevent chocolate from taking over and remove the last of the jelly.