This castle proved fiendishly difficult to figure out, and Nell spent a 
few weeks working on it. Part of the problem
was that this was the first castle Princess Nell had visited that was actually 
functioning as intended; the dark knight had not been able to foul the place 
up, probably because everything was done in ciphers here, and everything was 
decentralized. Nell discovered that a smoothly functioning system was much 
harder to puzzle out than one that was broken.