That was a nice puzzle.
I remember having enjoyed Betrayal at Krondor's classic puzzles that had a one-word solution you had to type in in order to open treasure chests.
Like these, from BaK:
1. A barrel of rainwater weighs twenty pounds. What must you add to make it weigh fifteen?
2. Buckets, barrels, baskets, cans; What must you fill with empty hands?
3. The one who made it, didn't want it. The one who bought it, didn't need it. The one who used it, never saw it.
Answers, written in l33t and backwards:
1:531oh 2:53vo1g 3: n10fFoc
When I played the game I still didn't have access to Internet, so it was much more fun to try to figure them out without the temptation to print out a walkthrough from the web.