Puzzle 19: Kiss a Frog
Can you turn a FROG into a PRINCE?
You won!
TRIVIA
In the Brothers Grimm story, "The Frog Prince", a prince has been cursed and turned into a frog. He befriends a princess after she loses her golden ball in his pond and he retrieves it for her. When she kisses the frog the spell is broken, and he turns back into a prince.
Wikipedia: The Frog Prince