It's a logic game. You are told how many correct, but in the wrong place, guesses you have, how many correct and in the right place, and how many are outright wrong. You change the details to deduce which ones are correct, and which ones are not. You have to correctly guess the entire sequence. It's like the face building game in Purble Place in Windows 7, except you may not get feedback on specific parts. The 7-year old in my house understands how to do this sort of logic game, and learned it in about half an hour. Take notes on your attempts and it is easy.