Your objective is to get 30,000 points in 45 moves while fulfilling the order of 99 red, 99 orange and 99 yellow. The key to beating this level is to take advantage of the lack of blockers and make as many colour bombs + striped candy combinations possible. Avoid the temptation of just working anywhere because there are no obstacles and try keeping your moves lower on the board so you bring more candies down and create a cascading effect that scores the needed points to complete the level.