The goal of the Daily Challenge is to complete it in a way that gets as many Stars as possible.
To get Stars, you must identify Required Words in a random order. You can tell which word is the next one you must find by the Sun or Moon icon on one of the empty letters. This icon will move to the right each time you identify a different Required Word, and if that would move it off the word, it will go to a random different word.
If you identify the word with the Sun/Moon, it will go and fill the bar at the bottom of the screen. If it fills past a Star, you will have that Star when the level is over.
You will also get Coins for completing the Challenge and will always get the same amount of Coins regardless of how many Stars you got.
To get Stars, you must identify Required Words in a random order. You can tell which word is the next one you must find by the Sun or Moon icon on one of the empty letters. This icon will move to the right each time you identify a different Required Word, and if that would move it off the word, it will go to a random different word.
If you identify the word with the Sun/Moon, it will go and fill the bar at the bottom of the screen. If it fills past a Star, you will have that Star when the level is over.
You will also get Coins for completing the Challenge and will always get the same amount of Coins regardless of how many Stars you got.