That would be the one written by Harry McCracken, correct?
The author of the game claimed that the original was unwinnable due to a bug. I typed it in from The Captain 80 book of BASIC adventures many, many years ago and I don’t remember it being unwinnable. Mind you, I didn’t have a TRS-80, so I probably ported it to the Atari 8-bit or something similar and may have fixed the bug in the process.
It’s a nice little game and one that I’ve always remembered. In fact, I have extensive notes on enhancements to the game with lots of extra puzzles. I must get around to implementing those one of these days. The author has done his own enhancements in the meantime, so I’ll have to check those out first.