A room high in the castle's middle
In the castle's central part, a room up on the right holds stars, and nothing seems to reach it.
Nudge 1Where to look
Look for a hook.
What you needOther problems to solve first
Solve these first (each opens its own page, no answers on the way):
Show the solutionThe whole answer, with a video
With the rope, stand on the floor under the hook in the middle of the central part and press B: Dizzy swings up and right, into the upper room.