Try to find all the Draculas in the castle.
You can open one door for each Dracula in the castle.
If there was a Dracula in that room, you kill it.
If there was no Dracula in that room, you wake up another Dracula!
After each turn, all the Draculas move to an adjacent room.
When two Draculas meet, the scarier Dracula puts the other to sleep.