Thursday, March 7, 2019

Darklands Puzzle #8

The path is blocked by an iron door. Carved about it are the words:
ONE HEAD INVARIABLY SPEAKS TRUTH.
THE OTHER HEADS ALWAYS LIE.
Embossed on the door are four metal heads. They speak:
Gold: "Yesterday, Hootvin said that the gold knob opened the door."
Silver: "The copper head speaks the truth."
Copper: "I am not Hootvin."
Lead: "Naturally not, for I am Hootvin."
The door has two knobs, gold and silver. One opens the door, the other is probably (is. ed.) a trap. You press...
...the gold knob.
...the silver knob.
(Source: Darklands cluebook by MicroProse Software)

Silver is obviously lying because only one head can speak the truth. This means that Copper is also lying and is therefore Hootvin. Lead is lying because he can't be Hootvin. (Presumably there is only one Hootvin.) This leaves Gold as the sole truth-teller but there is a caveat: Gold is relaying what Hootvin (an inveterate liar) said. This means that the silver knob opens the door.

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