Basically, you'll be testing the speed of the puzzle: Is it challenging without being frustrating? Is it fun? Was there that "ah-hah" moment when you realized what it was? What was your play time on it?
When you start, you'll find two torches in the room ahead of you, and you'll find a healing crystal if and when you need it.
There is no combat. When you succeed, you'll see a message about another path opening up. Sorry, but access to all other areas have been sealed off for the purposes of this test - including the new path.

Please post any comments/criticisms in this thread.
Thanks again for your time and (hopefully) help!
You can download it here (37 megs)
[EDIT TO ADD: I should probably mention that this is the latest patch of the game.]