Harry Potter and the locked chamber

One of the Harry’s ill-wishers has locked him in the secret Hogwarts Chamber so that he would miss the today’s Quidditch game. Help Harry to get out of this room, following the signs, guessing codes and solving a list of tasks. But hurry up – the decisive game, where Harry needs to be for the Gryffindors to win the Slytherin, starts in an hour.