Tuesday, March 12, 2019

Darklands Puzzle #18

The path is blocked by a heavy door. Carved above it are the words:
ONE HEAD ALWAYS LIES.
ONE HEAD SPEAKS TRUTH.
KRUSAD'S HEAD CAN TELL TRUTH OR LIES.
MULTIPLE ANSWERS ARE POSSIBLE.
PRESS THE HEAD THAT CANNOT BE KRUSAD'S TO OPEN THE DOOR.
Embossed on the door are three metal heads. They speak:
Gold: "I am Aubyn."
Silver: "That is true. Gold is indeed Aubyn."
Copper: "Not so, I am Aubyn."
You press...
...the gold head.
...the silver head.
...the copper head.
(Darklands cluebook by MicroProse Software)

As suggested by the cluebook, if Copper is Aubyn, then gold and silver are either both telling the truth or both lying. But there have to be one "knight" and one "knave" in addition to the more flexible Krusad. Therefore Copper cannot be Krusad.

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